Metal removal device for paper pulp roll

Abstract

The utility model discloses a metal removal device for paper pulp rolls, which comprises a rack, two paper pulp rolls and a pulverizer for pulverizing the paper pulp rolls are arranged on the rack, the two paper pulp rolls are conveyed to an inlet of the pulverizer through a plurality of different roll shafts and different routes, and the two paper pulp rolls are arranged on the rack. A metal detector used for detecting a paper pulp roll and a metal removal mechanism used for cutting the paper pulp roll are arranged on the rack, the metal removal mechanism comprises a cutting assembly capable of moving in the width direction of the paper pulp roll, and the metal detector comprises a plurality of detection areas in the width direction of the paper pulp roll. The paper pulp roll cutting device has the advantages that the part, with metal, of the paper pulp roll is cut off through the cutting assembly, conveying of the paper pulp roll is stopped in the cutting-off process, meanwhile, another paper pulp roll begins to be conveyed, and the efficiency of the whole device is improved.

Description

Technical Field

[0001] The utility model belongs to the field of pulp rolls, and particularly relates to a metal removing device for pulp rolls. Background Art

[0002] A pulp roll is a fibrous substance made from plant fibers through different processing methods, mainly used for manufacturing paper and cardboard. It can also be remanufactured from recycled fibers, but the recycled fibers may contain metals. Before crushing and processing the pulp roll, the metals in it need to be removed to avoid damage to the crusher and prevent the remanufactured products from containing metals and not meeting the standards. Content of the Utility Model

[0003] The purpose of the utility model is to provide a metal removing device for pulp rolls.

[0004] To achieve the above purpose, the utility model provides the following technical solutions:

[0005] A metal removing device for pulp rolls includes a frame. Two pulp rolls and a crusher for crushing the pulp rolls are arranged on the frame. The two pulp rolls are conveyed to the inlet of the crusher through a number of different rollers along different routes. A metal detector for detecting the pulp roll and a metal removing mechanism for cutting the pulp roll are arranged on the frame. The metal removing mechanism includes a cutting component that can move along the width direction of the pulp roll. The metal detector includes a number of detection areas in the width direction of the pulp roll.

[0006] Preferably, the metal removing mechanism includes a fixed box arranged on the frame. An opening for the pulp roll to pass through is formed in the fixed box. Two linear modules are arranged in the fixed box. A connecting plate is arranged between the movable parts of the two linear modules. The cutting component is arranged on the connecting plate. A waste box corresponding to the cutting component is arranged on the inner bottom surface of the fixed box.

[0007] Preferably, the cutting component includes a cylinder arranged on the connecting plate. A cutting knife located above the pulp roll is arranged at the bottom of the cylinder. The cutting edges of the cutting knife enclose a closed figure.

[0008] Preferably, an arc edge corresponding to the cutting edge is arranged at the top of the waste box. The top of the arc edge is in contact with the pulp roll.

[0009] Preferably, the number of the detection areas is at least three, and the three detection areas have overlapping areas in the width direction of the pulp roll.

[0010] Preferably, a guide rail is arranged on the frame along the conveying direction of the pulp roll. The metal detector is slidably arranged on the guide rail.

[0011] The beneficial effects of the present utility model are as follows: The present utility model detects the pulp roll through a metal detector, and then cuts off this part by a metal removal mechanism to prevent metal from entering the pulverizer. By setting two groups of pulp rolls, a metal detector and a metal removal mechanism, when one group cuts the pulp roll, the other group operates, so that the pulverizer is pulverizing the pulp roll throughout the process, improving the efficiency, and at the same time effectively preventing the damage caused by the empty operation of the pulverizer. Description of the Drawings

[0012] Figure 1 is a schematic structural view of the present utility model.

[0013] Figure 2 is a schematic structural view of the metal removal mechanism in the present utility model.

[0014] Wherein: frame 10, pulp roll 12, metal removal mechanism 14, fixed box 16, linear module 18, connecting plate 20, cylinder 22, cutting knife 24, waste box 26, arc edge 28, guide rail 30, metal detector 32. Specific Embodiments

[0015] The technical solutions of this patent will be further described in detail below in conjunction with specific embodiments.

[0016] As Figure 1 shown in the figure, a metal removal device for pulp rolls of the present utility model includes a frame 10. Two pulp rolls 12 and a pulverizer for pulverizing the pulp roll 12 are arranged on the frame 10. The two pulp rolls 12 are conveyed to the inlet of the pulverizer through a number of different rollers along different routes. A metal detector 32 for detecting the pulp roll 12 and a metal removal mechanism 14 for cutting the pulp roll 12 are arranged on the frame 10. The metal removal mechanism 14 includes a cutting assembly that can move along the width direction of the pulp roll 12. The metal detector 32 includes a number of detection areas in the width direction of the pulp roll 12;

[0017] By setting two pulp rolls 12, with either one as the main roll and the other as the auxiliary roll. When the main pulp roll 12 is being conveyed, the auxiliary pulp roll 12 remains stationary. The crusher crushes the main pulp roll 12. During this process, the metal detector 32 above the main pulp roll 12 detects the pulp roll 12. When it detects that the pulp roll 12 contains metal, the main pulp roll 12 stops running. The conveying speed of the pulp roll 12 is controlled by a program to maintain a uniform movement. So, the moving distance of the pulp roll 12 during the period from when the metal detector 32 detects the metal until the main pulp roll 12 completely stops is a fixed value. When the main pulp roll 12 completely stops, the part of the main pulp roll 12 containing metal just moves below the metal removal mechanism 14. At the same time, the cutting assembly also moves along the width direction of the pulp roll 12 so that the cutting assembly corresponds to the pulp roll 12 containing metal. The cutting assembly cuts off this part of the pulp roll 12. When the main pulp stops, the auxiliary pulp roll 12 starts to be conveyed, improving the crushing efficiency. By setting multiple detection areas, multiple detections are carried out simultaneously on the pulp roll 12 in the width direction, making the detection results more accurate.

[0018] The metal removal mechanism 14 includes a fixed box 16 arranged on the frame 10. An opening for the pulp roll 12 to pass through is provided on the fixed box. Two linear modules 18 are arranged inside the fixed box 16. A connecting plate 20 is arranged between the moving parts of the two linear modules 18. The cutting assembly is arranged on the connecting plate 20. The inner bottom surface of the fixed box 16 is provided with a waste box 26 corresponding to the cutting assembly.

[0019] When the metal detector 32 detects that a certain area contains metal, the linear module 18 runs to drive the connecting plate 20 and the cutting assembly to move to the corresponding position, and the cutting assembly cuts the pulp roll 12 containing metal. It is also possible to use a synchronous belt, a lead screw, a segmented cylinder 22, etc. to drive the cutting assembly to move. A waste box 26 for receiving waste is arranged in the fixed box 16, which is convenient for replacing and cleaning the waste.

[0020] The cutting assembly includes a cylinder 22 arranged on the connecting plate 20. The bottom of the cylinder 22 is provided with a cutting knife 24 located above the pulp roll 12. The cutting edges of the cutting knife 24 enclose a closed figure.

[0021] The cutting edges enclose a closed figure, so that during the cutting process, the pulp roll 12 containing metal can be cut off at one time, and the cut waste is not easily adhered to the pulp roll 12.

[0022] The top of the waste box 26 is provided with an arc edge 28 corresponding to the cutting edge. The top of the arc edge 28 is in contact with the pulp roll 12.

[0023] The arc edge 28 cooperates with the cutting blade to facilitate the cutting of the pulp roll 12. The top of the arc edge 28 can also support the pulp roll 12, facilitating cutting.

[0024] The several detection areas include at least three, and the three detection areas have overlapping areas in the width direction of the pulp roll 12;

[0025] During the detection process, there will be some metals at the junction of two detection areas, and the detection areas have overlapping areas, making the detection results more accurate.

[0026] A guide rail 30 is arranged on the frame 10 along the conveying direction of the pulp roll 12, and the metal detector 32 is slidably arranged on the guide rail;

[0027] The amount that the pulverizer can pulverize per unit time is limited. Therefore, for a relatively thin pulp roll 12, the conveying speed of the pulp roll 12 can be increased to make full use of the pulverizing efficiency of the pulverizer. For a relatively thick pulp roll 12, the conveying speed of the pulp roll 12 can be reduced so that the pulp roll 12 can be fully pulverized. For different conveying speeds of the pulp roll 12, during the time from when the metal in the pulp roll 12 is detected to when the pulp roll 12 completely stops, the moving distance of the pulp roll 12 is different. By adjusting the position of the metal detector 32, the pulp roll 12 containing metal will stop below the cutting assembly under different conveying speed conditions.

[0028] What the present utility model protects is the physical structure of the above device. In the above process, the conveying speed, operation and stop of the pulp roll 12, and the control system controls the suspension and operation of the metal removal mechanism 14 and the main pulp roll 12 and the secondary pulp roll 12 according to the feedback of the metal detector 32, which are all set by programs. The program and the control system are well-known to those skilled in the art and are not within the protection scope of the present utility model.

[0029] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present utility model. Any reference signs in the claims should not be regarded as limiting the claimed rights.

[0030] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A metal removal device for pulp rolls, characterized in that: The invention comprises a frame on which two pulp rolls and a crusher for crushing the pulp rolls are arranged. The two pulp rolls are conveyed to the entrance of the crusher via several different rollers through different routes. The frame is provided with a metal detector for detecting the pulp rolls and a metal removal mechanism for cutting the pulp rolls. The metal removal mechanism comprises a cutting assembly movable in the width direction of the pulp rolls. The metal detector comprises several detection areas in the width direction of the pulp rolls.

2. The metal removal device for pulp roll according to claim 1, characterized in that: The metal removal mechanism includes a fixed box arranged on a frame, the fixed box is provided with an opening for the pulp roll to pass through, two linear modules are arranged in the fixed box, a connecting plate is arranged between the movable parts of the two linear modules, the cutting component is arranged on the connecting plate, and a waste box corresponding to the cutting component is arranged on the inner bottom surface of the fixed box.

3. The metal removal device for pulp roll according to claim 2, characterized in that: The cutting assembly comprises a cylinder arranged on the connecting plate, a cutting knife located above the pulp roll is arranged at the bottom of the cylinder, and the cutting blades of the cutting knife are enclosed to form a closed figure.

4. The metal removal device for pulp roll according to claim 2, characterized in that: The top of the waste box is provided with an arc edge corresponding to the cutting edge, and the top of the arc edge is in contact with the pulp roll.

5. The metal removal device for pulp roll according to claim 1, characterized in that: The plurality of detection areas include at least three detection areas, and the three detection areas have overlapping areas in the width direction of the pulp roll.

6. The metal removal device for pulp roll according to claim 1, characterized in that: A guide rail is arranged on the frame along the conveying direction of the pulp roll, and the metal detector is slidably arranged on the guide rail.

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