Central pulp distributor for papermaking

Abstract

The utility model discloses a central pulp distributor for papermaking, which relates to the field of central pulp distributors and comprises a feed pipe, the output end of the feed pipe is fixedly connected with a connecting pipe, one end of the connecting pipe far away from the feed pipe is of a closed structure, the bottom end of the feed pipe is provided with a discharge pipe extending downwards, and the discharge pipe is provided with a discharge port. The lower half part of the discharge pipe is of a conical structure, and the output end of the discharge pipe is fixedly connected with a discharge nozzle; and a synchronous transmission mechanism is fixedly installed above the connecting pipe, an anti-blocking mechanism is installed in an inner cavity of the straight rod part of the discharging pipe, and the top of the anti-blocking mechanism penetrates to the position above the outer portion of the connecting pipe. The anti-blocking mechanism and the synchronous transmission mechanism are arranged, the synchronous transmission mechanism is used for driving the multiple anti-blocking mechanisms to rotate synchronously, the anti-blocking mechanisms rotating synchronously can prevent paper pulp from blocking the discharge pipe, and meanwhile the paper pulp can be prevented from remaining in the discharge pipe.

Description

Technical Field

[0001] The utility model relates to the field of central pulp distributors, in particular to a central pulp distributor for papermaking. Background Art

[0002] The central pulp distributor is used to discharge the pulp into the headbox. The headbox is a key part of a modern paper machine. Its structure and performance have a decisive effect on the formation of paper sheets and the quality of paper. The uniformity with which the pulp is sprayed into the headbox by the pulp distributor also has a great influence on the quality of paper forming.

[0003] In the prior art, when pulp flows in the central pulp distributor, flocs in the pulp are prone to blockage in the discharge pipe, causing uneven pulp distribution. At the same time, the residual pulp in the discharge pipe adheres to the inner wall of the discharge pipe after losing water, making it difficult to clean and discharge. Utility Model Content

[0004] The purpose of the present utility model is to provide a central pulp distributor for papermaking in order to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a central pulp distributor for papermaking, comprising a feed pipe, wherein the output end of the feed pipe is fixedly connected to a connecting pipe, the end of the connecting pipe away from the feed pipe is in a closed structure, the bottom end of the feed pipe is provided with a downwardly extending discharge pipe, the lower half of the discharge pipe is in a conical structure, and the output end of the discharge pipe is fixedly connected to a discharge nozzle; a synchronous transmission mechanism is fixedly installed above the connecting pipe, an anti-blocking mechanism is installed in the inner cavity of the straight rod portion of the discharge pipe, the top of the anti-blocking mechanism passes through to the outside of the connecting pipe, and the top of the anti-blocking mechanism is fixedly connected to the bottom end of the synchronous transmission mechanism.

[0006] As a further solution of the present invention: the anti-blocking mechanism includes a connecting shaft rotatably mounted on the inner wall of the connecting pipe and extending downward, the outer wall of the connecting shaft is located in the inner cavity of the straight rod portion of the discharge pipe and is fixedly connected to a feeder, the feeder has a spiral structure, and the top of the connecting shaft passes through the top of the connecting pipe.

[0007] As a further solution of the present invention: the synchronous transmission mechanism includes multiple groups of synchronous transmission wheels, and two adjacent groups of synchronous transmission wheels are connected by synchronous transmission belts. The number of the two groups of synchronous transmission wheels located at the head end and the end end is one, and the number of the other multiple groups of synchronous transmission wheels is two. The two synchronous transmission wheels in one group are coaxially connected in the up and down directions, and a drive motor is installed above one group of synchronous transmission wheels, and the output end of the drive motor is coaxially connected to the synchronous transmission wheel.

[0008] As a further solution of the present invention: the front end plate of the drive motor is installed and connected to the fixed frame, a fixed block is integrally formed above the outer periphery of the feed pipe, the top of the fixed block is flat, and the bottom end of the fixed frame is fixedly connected to the top of one of the fixed blocks.

[0009] As a further solution of the present invention: the discharge nozzle is connected to the headbox through a pipeline.

[0010] Compared with the prior art, the beneficial effects of the present invention are:

[0011] By setting up an anti-blocking mechanism and a synchronous transmission mechanism, the synchronous transmission mechanism is used to drive multiple anti-blocking mechanisms to rotate synchronously. The synchronously rotating anti-blocking mechanisms can prevent pulp from being blocked in the discharge pipe and can also prevent pulp from remaining in the discharge pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural diagram of the utility model;

[0013] Figure 2 This is a schematic diagram of the internal structure of the utility model;

[0014] Figure 3 For the utility model Figure 2 A partial enlarged view of the middle A;

[0015] Figure 4 For the utility model Figure 2 A partial enlarged view of point B in the middle.

[0016] In the figure: 1. Feed pipe; 2. Connecting pipe; 3. Discharge pipe; 4. Discharge nozzle; 5. Drive motor; 6. Synchronous transmission wheel; 7. Synchronous transmission belt; 8. Fixed block; 9. Connecting shaft; 10. Feeder. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0018] See also Figures 1 to 4In an embodiment of the utility model, a central pulp distributor for papermaking includes a feed pipe 1, the output end of the feed pipe 1 is fixedly connected to a connecting pipe 2, the end of the connecting pipe 2 away from the feed pipe 1 is a closed structure, the bottom end of the feed pipe 1 is provided with a discharge pipe 3 extending downward, the lower half of the discharge pipe 3 is a conical structure, and the output end of the discharge pipe 3 is fixedly connected to a discharge nozzle 4; a synchronous transmission mechanism is fixedly installed above the connecting pipe 2, and an anti-blocking mechanism is installed in the inner cavity of the straight rod portion of the discharge pipe 3, the top of the anti-blocking mechanism passes through to the outside of the connecting pipe 2, and the top of the anti-blocking mechanism is fixedly connected to the bottom end of the synchronous transmission mechanism.

[0019] In this embodiment: pulp enters the connecting pipe 2 through the feed pipe 1, and the pulp entering the connecting pipe 2 enters multiple discharge pipes 3 under pressure. Thereafter, the pulp is discharged from the discharge pipe 3 into the headbox through the discharge nozzle 4. During this process, the synchronous transmission mechanism is started, and the synchronous transmission mechanism drives the anti-blocking mechanism to rotate. The rotating anti-blocking mechanism pushes out the pulp in the discharge pipe 3 at a uniform speed to avoid blockage of flocs in the pulp. At the same time, it can apply moving power to the straight drop to achieve uniform discharge of the pulp.

[0020] Please refer to Figure 1 、 Figure 2 and Figure 3 The synchronous transmission mechanism includes multiple groups of synchronous transmission wheels 6. Two adjacent groups of synchronous transmission wheels 6 are connected by synchronous transmission belts 7. The number of the two groups of synchronous transmission wheels 6 located at the head end and the end end is one, and the number of the other multiple groups of synchronous transmission wheels 6 is two. The two synchronous transmission wheels 6 in one group are coaxially connected in the up and down directions. A driving motor 5 is installed above one group of synchronous transmission wheels 6, and the output end of the driving motor 5 is coaxially connected to the synchronous transmission wheel 6.

[0021] In this embodiment, by starting the drive motor 5, the output shaft of the drive motor 5 drives the synchronous transmission wheel 6 connected thereto to rotate, and the synchronous transmission wheel 6 drives another set of synchronous transmission wheels 6 to rotate through the synchronous transmission belt 7. Similarly, another set of synchronous transmission wheels 6 drives other adjacent synchronous transmission wheels 6 to rotate synchronously through another synchronous transmission belt 7, thereby realizing synchronous transmission of torque. Multiple sets of synchronous transmission wheels 6 rotate synchronously, in the same direction, and at the same speed.

[0022] Please refer to Figure 2 and Figure 4 The anti-blocking mechanism includes a connecting shaft 9 that is rotatably mounted on the inner wall of the connecting pipe 2 and extends downward. The outer wall of the connecting shaft 9 is located in the inner cavity of the straight rod part of the discharge pipe 3 and is fixedly connected to a feeder 10. The feeder 10 has a spiral structure, and the top of the connecting shaft 9 passes through the top of the connecting pipe 2.

[0023] In this embodiment: multiple groups of synchronously rotating synchronous transmission wheels 6 drive the connecting shafts 9 connected thereto to rotate when they rotate, and the connecting shafts 9 drive the feeders 10 connected thereto to rotate when they rotate. The rotating feeders 10 actively transport the pulp in the discharge pipe 3. The rotation speed of the feeders 10 can change the speed of pulp discharge and can effectively prevent flocs in the pulp from clogging the discharge pipe 3.

[0024] Please refer to Figure 1 and Figure 2 The front end plate of the drive motor 5 is installed and connected to the fixed frame, and a fixed block 8 is integrally formed above the outer periphery of the feed pipe 1. The top of the fixed block 8 is flat, and the bottom end of the fixed frame is fixedly connected to the top of a fixed block 8.

[0025] In this embodiment: the mounting frame is used to support the drive motor 5 to ensure normal operation of the drive motor 5 and avoid shaking and swaying during operation. The fixed block 8 can support the fixed frame. The setting of multiple fixed blocks 8 can realize the connection between the fixed frame and the drive motor 5 and any group of synchronous transmission wheels 6.

[0026] Please refer to Figure 1 The discharge nozzle 4 is connected to the headbox through a pipeline.

[0027] In this embodiment, the discharge nozzle 4 is used to discharge the pulp into the headbox.

[0028] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A central pulp distributor for papermaking, comprising a feed pipe (1), characterized in that: The output end of the feed pipe (1) is fixedly connected to a connecting pipe (2), the end of the connecting pipe (2) away from the feed pipe (1) is in a closed structure, the bottom end of the feed pipe (1) is provided with a discharge pipe (3) extending downward, the lower half of the discharge pipe (3) is in a conical structure, and the output end of the discharge pipe (3) is fixedly connected to a discharge nozzle (4); a synchronous transmission mechanism is fixedly installed above the connecting pipe (2), an anti-blocking mechanism is installed in the inner cavity of the straight rod portion of the discharge pipe (3), the top of the anti-blocking mechanism penetrates to the outside of the connecting pipe (2), and the top of the anti-blocking mechanism is fixedly connected to the bottom end of the synchronous transmission mechanism.

2. A central pulp distributor for papermaking according to claim 1, characterized in that: The anti-blocking mechanism comprises a connecting shaft (9) rotatably mounted on the inner wall of the connecting pipe (2) and extending downward, the outer wall of the connecting shaft (9) being located in the inner cavity of the straight rod portion of the discharge pipe (3) and fixedly connected to a feeder (10), the feeder (10) being a spiral structure, and the top of the connecting shaft (9) passing through the top of the connecting pipe (2).

3. A central pulp distributor for papermaking according to claim 2, characterized in that: The synchronous transmission mechanism comprises a plurality of groups of synchronous transmission wheels (6), wherein two adjacent groups of the synchronous transmission wheels (6) are connected by a synchronous transmission belt (7), the number of the two groups of the synchronous transmission wheels (6) located at the head end and the tail end is one, and the number of the other plurality of groups of the synchronous transmission wheels (6) is two, the two synchronous transmission wheels (6) in one group are coaxially connected in the vertical direction, a driving motor (5) is installed above one group of the synchronous transmission wheels (6), and the output end of the driving motor (5) is coaxially connected to the synchronous transmission wheel (6).

4. A central pulp distributor for papermaking according to claim 3, characterized in that: The front end plate of the driving motor (5) is mounted and connected to the fixing frame, and a fixing block (8) is integrally formed above the outer periphery of the feeding pipe (1), the top of the fixing block (8) is flat, and the bottom end of the fixing frame is fixedly connected to the top of one of the fixing blocks (8).

5. A central pulp distributor for papermaking according to claim 1, characterized in that: The discharge nozzle (4) is connected to the headbox via a pipeline.

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