JP2019093314A - Sieving machine having rotary drum - Google Patents

Abstract

To facilitate change to a boundary of selection grain diameter when selecting a processed product with a sieving machine having a rotary drum.SOLUTION: A sieving machine 1 comprises a first rotary drum 10 having a first through-hole group 11, a second rotary drum 20 having a second through-hole group 21 smaller in maximum diameter than the first through-hole group 11, an input unit 2 for inputting a processed product to the first rotary drum 10, a first discharge unit A which discharges a processed product that has been input from the input unit 2 and not pass through the first through-hole group 11, a second discharge unit B which discharges a processed product that has passed through the first through-hole group 11 and not passed through the second through-hole group 21, a third discharge unit C which discharges a processed product that has passed through the first through-hole group 11 and the second through-hole group 21, and switching means 30 having a function of selectively guiding the processed product discharged from the second discharge unit B at least to a first chute X on the first discharge unit A side or a second chute Y on the third discharge part C side.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a sieve having a rotary drum.

  A sieve (sieving) machine equipped with a rotating drum may be provided as an apparatus for sorting various treated materials such as crushed stone, ore, other lumps, and granular materials according to their particle sizes. This sieving machine is also called trommel, and is provided on the downstream side of a crusher such as a ball mill or rod mill, for example, and a crusher, and the processed material which has been crushed or crushed is further sorted according to its size (particle diameter). doing.

  The sieve has a configuration in which a cylindrical rotary drum provided with a large number of through holes on its side is used sideways, and the processed material is passed through the through holes while the rotary drum is rotated about the cylinder axis. It divides into the thing which does not pass through a through-hole (for example, refer patent documents 1-4).

JP 2004-154719 A (page 3 paragraph 0012, see FIG. 1 etc.) JP, 2012-130877, A (page 10 paragraph 0042, refer to FIG. 5 etc.) JP, 2015-134317, A (page 4 paragraph 0018, refer to FIG. 1 etc.) JP-A-2004-298835 (page 3 paragraph 0011, see FIG. 1 etc.)

  In the sieve machine equipped with the above-mentioned rotating drum, the processed products are sorted into those passing through the through holes of the rotating drum and those not passing through the through holes, that is, sorted into 2 stages (2 types) according to the particle size. be able to.

  However, in this device, in order to change the boundary of the particle size for sorting the processed matter into two stages, the net attached to the rotating drum must be changed to another net having different through hole sizes. There's a problem. It takes time and effort to replace the network, and it is not preferable in terms of operation to shut down the equipment each time it is replaced.

  Therefore, an object of the present invention is to make it possible to easily change the boundary of the particle size of the sorting when sorting the processed products with a sieve machine equipped with a rotating drum.

  In order to solve the above problems, the present invention comprises a first rotating drum provided with a first through hole group, and a second through hole group having a smaller maximum diameter than the first through hole group. A second rotating drum, a charging unit for charging the processing material to the first rotating drum, and a first discharging unit for discharging the processing material which is charged from the charging unit and does not pass through the first through hole group A second discharge part for discharging the processed material which does not pass through the first through hole group and does not pass through the second through hole group, and passes through the first through hole group and the second through hole group A third discharge unit for discharging the processed material, and at least a first chute on the first discharge unit side or a second chute on the third discharge unit side of the processed material discharged from the second discharge unit. And a switching means having a guiding function.

  At this time, another rotating drum is disposed between the outer peripheral surface of the first rotating drum and the inner peripheral surface of the second rotating drum, and the other rotating drum has the maximum diameter of the first through hole group and the other. The large diameter discharge which discharges the processing thing which does not pass through the through hole group of the above-mentioned another rotation drum provided with the through hole group which has the largest diameter between the maximum diameter of the above-mentioned 2nd through hole group, and the 2nd discharge part And the small diameter discharge portion for discharging the processed material passing through the through holes of the other rotary drum, and the switching means is configured to process the processed material discharged from the large diameter discharge portion and the small diameter discharge portion. The processed material discharged to the first chute or the second chute, or the discharged material from the large diameter discharge portion is guided to the first chute, and the processed material discharged from the small diameter discharge portion is guided to the second chute A configuration having a function can be adopted.

  In each of these aspects, the switching means may employ a configuration having a function of leading the processed material discharged from the second discharge part to a third chute different from the first chute and the second chute. .

  In each of these aspects, the second rotary drum is disposed on the outer periphery of the first rotary drum, the insertion portion is disposed at one axial end of the inner circumferential portion of the first rotary drum, and the first discharge portion is disposed. The axial direction between the outer peripheral surface of the first rotating drum and the inner peripheral surface of the second rotating drum is disposed at one end or the other end of the inner peripheral portion of the first rotating drum in the axial direction. The third discharge unit may be disposed at one end or the other end, and may be disposed at an outer peripheral portion of the second rotary drum.

  Further, the switching means can adopt a configuration in which the processed material discharged from the second discharge part is guided by a guide plate operated by an actuator.

  The present invention uses the first rotary drum and the second rotary drum having through holes of different diameters from each other, according to the particle size, the first discharge part, the second discharge part, and the third discharge part according to the particle size. Since the treatment products discharged from the second discharge unit are guided to the first discharge unit side and the third discharge unit side by the switching means among them, the particle size of the selection of the treatment products is discharged. You can easily change the boundaries of

Longitudinal section showing one embodiment of the present invention Main part enlarged view of Fig. 1 (A) is a main part enlarged view of another embodiment, (b) is a reference drawing The principal part enlarged view which shows other embodiment

  An embodiment of the present invention will be described based on the drawings. This embodiment, as shown in FIG. 1, is provided on the downstream side of a ball mill M that crushes the processed product using a large number of balls N, and the size of the processed product crushed by the ball mill M is It is a rotary drum type sieve machine 1 which sorts according to diameter).

  In the ball mill M, rotational force from a drive source D such as a motor is transmitted to the mill body through the roller R, and the mill body is rotated. Due to the rotation of the mill body, the ball N accommodated inside collides with the treated material, and the treated material is finely broken. The crushed material is fed to the sieving machine 1 from the mill discharge unit.

  The sieve machine 1 uses a plurality of cylindrical rotary drums 10 and 20 having a large number of through holes 11 and 21 on their side surfaces, with the cylinder axis direction being horizontal, and each rotary drum 10 and 20 is a cylinder axis While being rotated around, the processing objects are separated into those passing through the through holes 11 and 21 and those not passing through the through holes 11 and 21.

  In this embodiment, two rotating drums 10 and 20 are used. Specifically, the first rotary drum 10 provided with the first through hole group 11 and the second rotary drum 20 provided on the outer periphery of the first rotary drum 10 and provided with the second through hole group 21 Have.

  The maximum diameter of the through holes of the first through hole group 11 of the first rotating drum 10 is w1, and the maximum diameter of the through holes of the second through hole group 21 of the second rotating drum 20 is w2 (w2 <w1) It has become. The diameters of the through holes of the first through hole group 11 are all uniform at the maximum diameter w1, and the diameters of the through holes of the second through hole group 21 are all uniform at the maximum diameter w2.

  Further, in this embodiment, the two rotary drums 10 and 20 are coaxial, and the cylinder axis of the first rotary drum 10 and the cylinder axis of the second rotary drum 20 are positioned on a straight line. The positional relationship between the axes may be changed according to the specifications and application of the sieve.

  At one end in the cylinder axial direction of the first rotary drum 10, the charging unit 2 for charging the processing object to the inner peripheral portion of the first rotary drum 10 (the space inside the first rotary drum 10) is disposed. . The input part 2 is connected to the mill discharge part of the ball mill M.

  The processed material input from the input unit 2 is divided into a processed material that does not pass through the first through hole group 11 and a processed material that passes through the first through hole group 11. The processed material which does not pass through the first through hole group 11 is discharged from the first discharge portion A provided at the other end in the cylinder axial direction of the inner peripheral portion of the first rotating drum 10. The processed material that has passed through the first through hole group 11 moves to the inner peripheral portion of the second rotating drum 20 (the space between the outer peripheral surface of the first rotating drum 10 and the inner peripheral surface of the second rotating drum 20) Do.

  The first discharge portion A may be disposed on the same side as the input portion 2 in the inner circumferential portion of the first rotary drum 10, that is, at one end in the cylinder axial direction. In this case, at one end in the cylinder axial direction of the inner peripheral portion of the first rotary drum 10, the input portion 2 may be disposed upward and the first discharge portion A may be disposed downward.

  The processing object moved to the inner peripheral portion of the second rotary drum 20 is divided into a processing object not passing through the second through hole group 21 and a processing item passing through the second through hole group 21. The processed material that does not pass through the second through hole group 21 is discharged from the second discharge portion B provided at the other end in the cylinder axial direction of the inner peripheral portion of the second rotary drum 20.

  In this embodiment, one end in the cylinder axial direction of the inner peripheral portion of the second rotary drum 20 is closed by the end plate 3, but the second discharge portion B is a cylinder of the inner peripheral portion of the second rotary drum 20. It may be disposed at one axial end.

  The processed material that has passed through the second through hole group 21 is discharged to the outer peripheral portion of the second rotary drum 20 (outside the outer peripheral surface of the second rotary drum 20). The outer peripheral portion of the second rotary drum 20 is referred to as a third discharge portion C of the processing object. From the third discharge portion C, the processed material that has passed through both the first through hole group 11 and the second through hole group 21 is discharged. That is, the particle sizes of the processed material discharged from each discharge part are the first discharge part A (particle size w w1), the second discharge part B (w1> particle size w w2), and the third discharge part C (w2>) Particle size).

  In the second discharge part B, the processed material discharged from the second discharge part B is selectively transferred to at least the first chute X on the first discharge part A side or the second chute Y on the third discharge part C side. A switching means 30 having a guiding function is provided.

  In this embodiment, the switching means 30 controls the workpiece discharged from the second discharge part B by the guide plate 31 operated by the actuator 32 as the first chute X or the third discharge part C on the first discharge part A side. It can be selectively led to the side second shoot Y. The processed product guided to the first discharge unit A side by the switching unit 30 moves to the next process through the first chute X together with the processed product discharged from the first discharge unit A. Further, the processed product guided to the third discharge unit C by the switching unit 30 moves to the next process through the second chute Y together with the processed product discharged from the third discharge unit C.

  Thus, the sieve is selectively removed by selectively guiding the processed material discharged from the second discharge part B to the first chute X on the first discharge part A side or the second chute Y on the third discharge part C side. It is possible to easily switch the boundary between the particle sizes of the processed products sorted into two by 1 between w1 and w2. As a result, when changing the particle size of the sorting, it is not necessary to replace the net of the rotating drum.

  That is, when the switching means 30 is switched to the first discharge part A side, the boundary of the particle sizes of the processing objects sorted into two groups becomes the maximum diameter w1 of the through holes 11 of the first rotating drum 10. Is switched to the third discharge portion C side, the boundary of the particle sizes of the processed products sorted into the two groups becomes the maximum diameter w2 of the through holes 21 of the second rotating drum 20.

  As the actuator 32, various kinds of actuators such as a fluid type actuator in which the rod moves back and forth in accordance with the pressure of the fluid can be adopted in addition to an electric actuator in which the rod moves back and forth by energization. Moreover, as a drive source of the switching means 30, you may employ | adopt the driving force of a motor or an internal combustion engine besides the actuator which makes a rod advance / retract. Moreover, you may provide the operation part which operates the induction | guidance | derivation board 31 manually.

  In addition, the third maximum diameter of the insertion portion 2 is larger than the diameter of the first through holes 11 of the first through hole group 11, and the diameter (maximum diameter w0) at which the ball N does not pass (ball diameter 第三 w0) A ball catching means 5 having a through hole group 5a is provided. By providing the ball catching means 5, the ball N is prevented from entering the sieving machine 1. When the ball N wears and the particle diameter decreases, the ball N passes through the through holes of the third through hole group 5a. However, since the ball N is a magnetic material such as iron, it can be separated from the processed material thereafter by using the magnetic force of the magnet. For example, when the diameter of the ball N passing through the through holes of the third through hole group 5a is w0> ball diameter> w1, the ball N is discharged from the first discharge part A together with the processing object. The ball N is appropriately replenished in the ball mill M.

  In this embodiment, the first rotary drum 10 and the second rotary drum 20 are tapered such that the inner diameters gradually expand toward the discharge portions A and B provided at the end in the cylinder axial direction, respectively. Since the bottom surface is inclined downward toward the discharge sections A and B, the discharge of the processing material is promoted. In addition, by the water sprinkler 4 disposed on the inner peripheral portion of the first rotary drum 10, the processed material can easily pass through the through holes 11 and 21 and can be easily directed to the discharge portions A and B at the axial axial end. Is considered.

  Furthermore, in this embodiment, using the two rotary drums of the first rotary drum 10 and the second rotary drum 20, the three discharge parts of the first discharge part A, the second discharge part B and the third discharge part C are Although it is set and the processed material discharged from the second discharge part B having an intermediate particle diameter is switched to the first discharge part A side of the large diameter particle size or the third discharge part C side of the small particle diameter, for example The number of rotating drums used may be three or more. Thereby, the boundary of the particle diameter to be set can be widely set in multiple stages.

  For example, another rotary drum (third rotary drum) is disposed between the first rotary drum 10 and the second rotary drum 20 separately from the first rotary drum 10 and the second rotary drum 20, and a third rotary drum Is set to w3 between the maximum diameter w1 of the first through hole group and the maximum diameter w2 of the second through hole group (w1> w3> w2). Thereby, the particle diameter of the processing object discharged from each discharge part is the first discharge part A (particle diameter w w1) located at the innermost side and the third discharge part C (w2> located at the outermost side) According to the particle size of the object to be treated, the second discharge part B located in the middle thereof is set as the large particle diameter discharge part (w1> particle diameter 3w3) and the small particle diameter discharge part (w3> particle diameter) Divide into two of w w 2).

  Then, regarding the processed material discharged from the second discharge part B, both the large diameter discharge part (w1> particle size w w3) and the small diameter discharge part (w3> particle size w w2) are the first discharge parts A of large particle size Switch to the (particle size w w1) side or the third discharge part C (w 2> particle size) side of the small particle size, or only the processing object discharged from the large diameter discharge part (w 1> particle size w w 3) A configuration in which only the processing object discharged to the first discharge part A (particle diameter 粒径 w1) side and discharged from the small diameter discharge part (w3> particle diameter w w2) to the third discharge part C (w2> particle diameter) side of the small particle diameter By setting it as it is, the boundary of the particle size of the processed material sorted into two by the sieving machine 1 can be easily switched to three steps of w1, w3, and w2.

  Another embodiment is shown in FIG. 3 (a). In this embodiment, the switching means 30 has a function of leading the processed material discharged from the second discharge part B to the third chute Z different from the first chute X and the second chute Y. is there.

  That is, among the three discharge units of the first discharge unit A, the second discharge unit B, and the third discharge unit C, the switching unit 30 discharges the processed material discharged from the second discharge unit B having an intermediate particle diameter. Setting to switch to a first chute X on the side of the first discharge part A of large diameter particle size or a second chute Y on the side of the third discharge part C of small diameter particle size (hereinafter referred to as “selection setting”) As a further additional switching function, a setting to switch the processed material discharged from the second discharge part B so as to be led to the third chute Z different from the first chute X and the second chute Y (hereinafter referred to as “independent setting” Can be called). Thus, as in the case of the reference example shown in FIG. 3 (b), the processed material discharged from the second discharge unit B is sieved independently of the first discharge unit A and the third discharge unit C. Setting is also possible.

  As a specific configuration of the switching means 30, for example, in FIG. 3A, the processing object discharged from the second discharge part B can be a first chute X on the first discharge part A side of the large diameter particle size, or The first switching means 30a for switching to the second chute Y on the third discharge part C side of the small particle size, the second switching means 30b provided below (downstream side) the first switching means 30a, and the third It is set as the structure provided with the switching means 30c.

  Each of the first switching means 30a, the second switching means 30b, and the third switching means 30c is, for example, as in the previous embodiment, for example, the guiding plates 31a, 31b, 31c operated by the actuator 32 The configuration can be such that the direction to be turned is set.

  Partitions 41 and 42 are provided on both sides of the first switching means 30a. Further, a partition wall 43 is provided between the second switching means 30b and the third switching means 30c.

  First, in the selective setting, the leading end of the guiding plate 31b of the second switching means 30b is inclined toward the center partition 43 as indicated by a dashed line in the drawing. Further, similarly, the leading end of the guide plate 31c of the third switching means 30c is inclined to the partition wall 43 side.

  In this selection setting, when setting the processing object from the second discharge unit B to the first chute X, the first switching unit 30a is set to the first discharge unit A side, that is, the guiding plate 31a. The tip of the is inclined to the partition wall 42 side on the right side in the drawing. Thereby, the processed material from the second discharge part B is guided to the first chute X on the left side in the drawing than the partition wall 41 by the induction plate 31 b of the second switching means 30 b. At this time, the guide plate 31c of the third switching means 30c may be at a position away from the partition wall 43 as shown by the solid line in the figure.

  In addition, in the selection setting, when setting the processing object from the second discharge unit B to the second shoot Y, the first switching unit 30a is set to the third discharge unit C side, that is, the induction plate It is assumed that the tip end of 31a is inclined toward the partition wall 41 on the left side in the drawing. Thereby, the processed material from the second discharge part B is guided to the second chute Y on the right side in the drawing than the partition wall 42 by the induction plate 31 c of the third switching means 30 c. At this time, the induction plate 31b of the second switching means 30b may be at a position away from the partition wall 43 as shown by the solid line in the figure.

  Next, in the independent setting, as shown by a solid line in the figure, the leading end of the induction plate 31b of the second switching means 30b is in a position (upright state) away from the central partition 43 side. Further, the guide plate 31c of the third switching means 30c is also in a position (upright state) in which the tip is separated from the partition wall 43 side.

  Thereby, the processed material from the second discharge part B passes through the space sandwiched between the induction plate 31b of the second switching means 30b and the induction plate 31c of the third switching means 30c, and between the partition walls 41 and 42. It is led to the third shoot Z. At this time, the guide plate 31a of the first switching means 30a may be inclined to the side of the partition 42 shown by a solid line in the figure, or may be inclined to the side of the partition 41 shown by a chain line in the figure. Good. Alternatively, the guide plate 31a may be at an intermediate position (upright state) between the position shown by a solid line in the drawing and the position shown by a chain line in the drawing.

  Furthermore, another embodiment is shown in FIG. This embodiment is characterized in that the switching means 30 has a function of leading the processed material discharged from the second discharge part B to a third chute Z different from the first chute X and the second chute Y, as shown in FIG. Is the same as the embodiment of FIG.

  Of the three discharge units of the first discharge unit A, the second discharge unit B, and the third discharge unit C, the switching unit 30 makes large the processed material discharged from the second discharge unit B having an intermediate particle diameter. In addition to the selection setting to switch to the first chute X on the side of the first discharge part A of the particle size or the second chute Y on the side of the third discharge part C of the small particle size, the second discharge part as a further additional switching function It is possible to set an independent setting in which the processed material discharged from B is switched to be led to the third chute Z different from the first chute X and the second chute Y.

  As shown in FIG. 4, the switching means 30 is configured such that the processing object discharged from the second discharge part B is a first chute X on the side of the first discharge part A with a large diameter particle size, or a third discharge part with a small particle diameter A fourth switching means 30d for switching to the second chute Y on the C side and a fifth switching means 30e provided on the lower side (downstream side) of the fourth switching means 30d are provided.

  The fourth switching means 30d and the fifth switching means 30e are configured to set the guiding direction of the processing object, for example, by the induction plates 31d and 31e operated by the actuators, as in the above-described embodiment. it can. Further, partition walls 41 and 42 are provided on both sides of the fourth switching means 30d and the fifth switching means 30e.

  In the selection setting, when setting the processing object from the second discharge unit B to the first chute X, the fourth switching unit 30 d is set to the first discharge unit A side, that is, the guide plate 31 d The tip end is inclined to the partition wall 42 on the right side in the drawing. Thereby, the processed material from the second discharge part B is guided to the first chute X on the left side in the drawing than the partition wall 41 by the induction plate 31 d of the fourth switching means 30 d. At this time, the guide plate 31e of the fifth switching means 30e may be at any position.

  Further, in the selection setting, when setting the processing object from the second discharge unit B to the second chute Y, the fourth switching unit 30 d and the fifth switching unit 30 e are set to the third discharge unit C side. In other words, the leading end of the guiding plate 31d is in an upright state along the side of the dividing wall 41 in the left side of the drawing, and the leading end of the guiding plate 31e is inclined toward the side of the dividing wall 41 in the drawing. Thereby, the processed material from the second discharge part B is guided to the second chute Y on the right side in the figure than the partition wall 42 by the induction plate 31e of the fifth switching means 30e.

  Next, in the independent setting, the leading end of the guiding plate 31d of the fourth switching means 30d is in an upright state along the side of the dividing wall 41 in the figure, and the guiding plate 31e of the fifth switching means 30e is also the leading end Are erected along the side of the partition wall 42 on the right side in the drawing.

  Thereby, the processed material from the second discharge part B passes through the space sandwiched by the induction plate 31 d of the fourth switching means 30 d and the induction plate 31 e of the fifth switching means 30 e and the partitions 41 and 42. , And the lower third chute Z between the partition walls 41 and 42.

  In the above embodiment, the sieving machine 1 is provided on the downstream side of the ball mill M. However, the present invention is not limited to this embodiment, and the device disposed on the upstream side or downstream side of the sieving machine 1 Can be selected appropriately. For example, other types of pulverizers such as a rod mill and the discharge unit of the crusher may be connected to the input unit 2 of the sieve 1, and the processed material may be introduced into the sieve 1. In particular, the function of the sieving machine 1 for sorting into several types of particle sizes as in the present invention is suitable for the processed material from a rod mill used for rougher crushing than the ball mill M.

DESCRIPTION OF SYMBOLS 1 sieve machine 2 input part 3 end surface plate 10 1st rotating drum 11 1st through-hole group 20 2nd rotating drum 21 2nd through-hole group 30 switching means 31 induction | guidance | derivation board 32 actuator 41,42,43 Partition wall A 1st Discharge part B Second discharge part C Third discharge part X First chute Y Second chute Z Third chute

Claims (5)

A first rotating drum (10) provided with a first group of holes (11);
A second rotating drum (20) provided with a second through hole group (21) having a smaller maximum diameter than the first through hole group (11);
A charging unit (2) for charging the processing object to the first rotating drum (10);
A first discharge unit (A) that discharges the processing material that is input from the input unit (2) and does not pass through the first through hole group (11);
A second discharge unit (B) for discharging the processed material that does not pass through the first through hole group (11) and does not pass through the second through hole group (21);
A third discharge unit (C) for discharging the processed material that has passed through the first through hole group (11) and the second through hole group (21);
At least the first chute (X) on the first discharge part (A) side or the second chute (Y) on the third discharge part (C) side of the processed material discharged from the second discharge part (B) Switching means (30) having a function of selectively guiding;
Sieve machine equipped with. Another rotating drum is disposed between the outer peripheral surface of the first rotating drum (10) and the inner peripheral surface of the second rotating drum (20),
The further rotary drum comprises a group of holes having a maximum diameter between the maximum diameter of the first group of holes (11) and the maximum diameter of the second group of holes (21);
The second discharge part (B) discharges the large diameter discharge part which discharges the processed material which does not pass through the through holes of the other rotary drum, and the small diameter discharge which discharges the processed material which passes through the through holes of the other rotary drum. Divided into parts,
The switching means (30) discharges the processed material discharged from the large diameter discharge portion and the small diameter discharge portion to either the first chute (X) or the second chute (Y), or the large diameter discharge. The sieve machine according to claim 1, having a function of leading the treated material discharged from the part to the first chute (X) and the treated material discharged from the small diameter discharge part to the second chute (Y). The switching means (30) has a function of leading the processed material discharged from the second discharge part (B) to a third chute (Z) different from the first chute (X) and the second chute (Y) The sieve machine according to claim 1 or 2, comprising The second rotating drum (20) is disposed on the outer periphery of the first rotating drum (10),
The insertion portion (2) is disposed at one axial end of the inner peripheral portion of the first rotary drum (10),
The first discharge portion (A) is disposed at one end or the other end in the axial direction of the inner peripheral portion of the first rotary drum (10),
The second discharge part (B) is disposed at one end or the other end in the axial direction between the outer peripheral surface of the first rotary drum (10) and the inner peripheral surface of the second rotary drum (20),
The sieve machine according to any one of claims 1 to 3, wherein the third discharge part (C) is disposed at an outer peripheral part of the second rotary drum (20). The sieve according to any one of claims 1 to 4, wherein the switching means (30) guides the treated material discharged from the second discharge part (B) by a guide plate (31) operated by an actuator (32). Machine.

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