Screen cylinder capable of reducing thickening effect

Abstract

The utility model relates to the technical field of papermaking equipment, in particular to a screen cylinder capable of reducing the thickening effect, the screen cylinder is cylindrical, an upper flange and a lower flange are respectively arranged at two axial ends of the screen cylinder, a reinforcing ring and middle rings are arranged on the outer wall of the screen cylinder along the radial direction in a protruding manner, the reinforcing ring is arranged in the center of the outer wall of the screen cylinder, and a plurality of groups of middle rings are arranged at equal intervals along the axial direction of the screen cylinder; the lower flange is provided with a lower communicating channel, the reinforcing ring is provided with an upper communicating opening, and a communicating pipe is arranged between the lower communicating channel and the upper communicating opening in a communicating mode. Water is injected into the middle of the screen cylinder through the lower communicating channel, the communicating pipe and the upper communicating opening in sequence, and therefore the fiber content of paper pulp suspension liquid is guaranteed. According to the screen cylinder capable of reducing the thickening effect, the concentration of paper pulp suspension liquid in the screen cylinder is guaranteed, and holes of the screen cylinder are prevented from being blocked.

Description

TECHNICAL FIELD

[0001] The utility model relates to papermaking equipment technical field, concretely is a screen drum of reducing concentration effect. BACKGROUND

[0002] Screen drum, also known as screen basket, is a kind of equipment commonly used for material screening, is widely used in mining, metallurgy, construction, chemical industry, papermaking and other industries, is mainly used to separate materials with different particle sizes, physical states. At present, in the papermaking industry, paper pulp is a kind of suspension containing fibers;In the static state or slow flow speed, water is easy to precipitate, and the fibers are precipitated. Therefore, the paper pulp should be driven by rotor and screened by screen drum;However, due to the structural characteristics of vertical screen basket, the paper pulp in the middle of screen basket produces concentration effect, causing the opening of screen drum to be blocked, and the production capacity to be reduced. CONTENT

[0003] In order to solve the technical problems in the background art, the utility model provides a screen drum for reducing concentration effect, which can ensure the concentration of paper pulp suspension in the screen drum and prevent the opening of the screen drum from being blocked.

[0004] The utility model solves the technical scheme that adopts:

[0005] A screen drum for reducing concentration effect, the screen drum is set as a cylindrical shape, the two ends of the screen drum in the axial direction are respectively provided with upper flange and lower flange, the outer wall of the screen drum is provided with reinforcing ring and middle ring along the radial direction, the reinforcing ring is arranged at the center of the outer wall of the screen drum, and the middle ring is provided with multiple groups along the axial direction of the screen drum.

[0006] The lower flange is provided with lower communication channel, and the reinforcing ring is provided with upper communication port, and the lower communication channel and the upper communication port are communicated by communication pipe;

[0007] Water is injected into the middle part of the screen drum through the lower communication channel, the communication pipe and the upper communication port in sequence, so as to ensure the fiber content of the paper pulp suspension.

[0008] Further, the lower communication channel, the communication pipe and the upper communication port are circularly arrayed and arranged in multiple groups with the central axis of the screen drum as the center.

[0009] Further, the lower communication channel comprises:

[0010] The water inlet is arranged on the outer wall of the lower flange and is communicated with the external water supply pipeline.

[0011] The lower communication port is communicated with the communication pipe and is arranged upward.

[0012] Further, the upper communication port comprises:

[0013] A drain outlet is provided on the reinforcing ring, and the drain outlet extends into the screen drum;

[0014] An upper connecting port for connecting to a connecting pipe, wherein the upper connecting port is positioned downward.

[0015] Furthermore, the water supply port and the drain port are arranged parallel to the radial direction of the screen drum.

[0016] Furthermore, the lower connecting port and the upper connecting port are arranged parallel to the axial direction of the screen drum.

[0017] The beneficial effects of this utility model of a screen drum that reduces the concentration effect are as follows:

[0018] Water is supplied to the screen drum through the lower connecting channel, connecting pipe, and upper connecting port to ensure the concentration of pulp suspension inside the screen drum and prevent blockage of the screen drum openings. Attached Figure Description

[0019] Figure 1 This is a front view schematic diagram of a screen drum that reduces the concentration effect, as provided in this utility model embodiment.

[0020] In the picture:

[0021] 10. Screen drum; 11. Upper flange; 12. Lower flange; 13. Reinforcing ring; 14. Middle ring.

[0022] 21. Lower connecting channel; 22. Upper connecting port; 23. Connecting pipe. Detailed Implementation

[0023] To more clearly and explicitly illustrate the specific implementation objectives and methods of this utility model, the technical solution of this utility model will be fully described below. The described embodiments are only some embodiments of this utility model, not all embodiments. Without creative effort, all other embodiments based on the described embodiments of this utility model are within the protection scope of this utility model.

[0024] This utility model relates to a screen drum that reduces the concentration effect, such as... Figure 1 As shown, the screen drum 10 is cylindrical, and an upper flange 11 and a lower flange 12 are respectively provided at both ends of the screen drum 10 along its axial direction. A reinforcing ring 13 and a middle ring 14 are provided on the outer wall of the screen drum 10 along its radial direction. The reinforcing ring 13 is located in the center of the outer wall of the screen drum 10, and multiple sets of the middle ring 14 are provided at equal intervals along the axial direction of the screen drum 10.

[0025] The lower flange 12 is provided with a lower connecting channel 21, and the reinforcing ring 13 is provided with an upper connecting port 22. A connecting pipe 23 is provided between the lower connecting channel 21 and the upper connecting port 22.

[0026] Multiple sets of lower connecting channels 21, connecting pipes 23, and upper connecting ports 22 are arranged in a circular array with the central axis of the screen drum 10 as the center. Water is injected into the middle of the screen drum 10 through the lower connecting channels 21, connecting pipes 23, and upper connecting ports 22 in sequence, thereby ensuring the fiber content of the pulp suspension.

[0027] Downlink channel 21 includes:

[0028] A water supply port is located on the outer wall of the lower flange 12, and is arranged radially parallel to the screen drum 10. It is connected to an external water supply pipeline.

[0029] The lower connecting port is used to connect with the connecting pipe 23. The lower connecting port is arranged upward and parallel to the axial direction of the screen drum 10.

[0030] The upper connection port 22 includes:

[0031] The drain outlet is provided on the reinforcing ring 13, and the drain outlet is arranged parallel to the radial direction of the screen drum 10 and extends into the screen drum 10;

[0032] The upper connecting port is used to connect with the connecting pipe 23. The upper connecting port is arranged downward and parallel to the axial direction of the screen drum 10.

[0033] For ease of installation, the connecting pipe 23 is designed as a two-section sealed interlocking structure.

[0034] In summary, the above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of this utility model. Based on the above description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification. All equivalent variations and modifications of the shape, structure, features, and spirit described in the claims of this utility model should be included within the scope of the claims of this utility model.

Claims

1. A sieve drum for reducing concentration effect, wherein the sieve drum (10) is cylindrical, and an upper flange (11) and a lower flange (12) are respectively provided at both ends of the axial direction of the sieve drum (10). A reinforcing ring (13) and a middle ring (14) are provided radially protruding on the outer wall of the sieve drum (10), wherein the reinforcing ring (13) is located at the center of the outer wall of the sieve drum (10), and multiple sets of the middle ring (14) are provided at equal intervals along the axial direction of the sieve drum (10), characterized in that: A lower connecting channel (21) is provided on the lower flange (12), and an upper connecting port (22) is provided on the reinforcing ring (13). A connecting pipe (23) is provided between the lower connecting channel (21) and the upper connecting port (22). Water is injected into the middle of the screen drum (10) in sequence through the lower connecting channel (21), the connecting pipe (23), and the upper connecting port (22) to ensure the fiber content of the pulp suspension.

2. The screen drum for reducing concentration effect according to claim 1, characterized in that: The lower connecting channel (21), connecting pipe (23), and upper connecting port (22) are arranged in multiple sets in a circular array with the central axis of the screen drum (10) as the center.

3. A screen drum for reducing concentration effect according to claim 2, characterized in that: The downstream connection channel (21) includes: A water supply port is provided on the outer wall of the lower flange (12), and the water supply port is connected to an external water supply pipeline; A lower connecting port for connecting to the connecting pipe (23), the lower connecting port being arranged upwards.

4. A screen drum for reducing concentration effect according to claim 3, characterized in that: The upper connection port (22) includes: A drain outlet is provided on the reinforcing ring (13), and the drain outlet extends into the screen drum (10); An upper connecting port for connecting to the connecting pipe (23), the upper connecting port being disposed downward.

5. A screen drum for reducing concentration effect according to claim 4, characterized in that: The water supply and drainage outlets are arranged radially parallel to the screen drum (10).

6. A screen drum for reducing concentration effect according to claim 4, characterized in that: The lower and upper connecting ports are arranged parallel to the axial direction of the screen drum (10).

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