Paper pulp rotational flow high-concentration sand remover

Abstract

The utility model discloses a paper pulp rotational flow high concentration desander relates to papermaking equipment technical field, the paper pulp rotational flow high concentration desander includes feed tee joint, pulp outlet pipe, conical liner, shell and sediment tank, feed tee joint's pulp inlet channel is arranged along feed tee joint's side wall tangential direction, feed tee joint's barrel inner wall is fixed with the helical blade that is distributed along the axial direction, feed tee joint's barrel inner wall is fixed with feed tee joint's feed tee joint's barrel inner wall is fixed with feed tee joint's feed tee joint's feed tee joint's feed tee joint's feed tee joint's feed tee joint's feed tee joint's feed tee joint's barrel inner wall. The spiral blades surround the circumferential direction of the slurry outlet pipe arranged in the axial direction, the inner wall of the feeding three-way barrel, the spiral blades and the pipe wall of the slurry outlet pipe define a spiral downward flow guide channel, the rotating direction of the flow guide channel is consistent with the cut-in direction of the slurry inlet channel, and conical spiral edges distributed in the axial direction are fixed to the inner wall of the conical container. The spiral blades, the flow guide channel and the conical spiral edges are arranged, slurry flows down along the flow guide channel after entering the sand remover in the tangential direction, the stability of rotational flow is improved, the slurry with stable rotational flow enters the conical container and is guided by the conical spiral edges, the inertia of centrifugal force and the stability of the direction are kept, and stable separation of impurities and the slurry is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of papermaking equipment technology, specifically to a pulp cyclone high-consistency sand remover. Background Technology

[0002] A high-consistency desander is a device used for purifying waste paper pulp. Its main function is to remove heavy impurities, such as metals and sand, from the pulp at a high concentration to obtain high-quality pulp. Its working principle is based on the difference in specific gravity between fibers and impurities; centrifugal force separates the heavy impurities. The pulp enters the desander tangentially through the feed tee at a certain pressure, where high-speed rotation generates centrifugal force. Due to the greater centrifugal force, the heavy impurities are thrown against the wall of the desander and gradually move towards the bottom of the cone under gravity, entering the sedimentation tank. Fibers, due to the smaller centrifugal force, gradually move towards the central low-pressure zone, rise in a vortex at the bottom, and are finally discharged through the good pulp outlet.

[0003] During operation, the pulp enters the equipment tangentially through the inlet channel and swirls. In the initial stage, the pulp swirling is not stable and is easily disturbed by unstable mixing, consuming some kinetic energy. Therefore, the pulp's velocity tends to decrease during rotation after entering the desander, affecting the centrifugal separation effect. Therefore, we provide a pulp cyclone high-consistency desander to improve the stability of pulp entry and swirling, thereby enhancing the separation effect. Utility Model Content

[0004] The purpose of this invention is to provide a pulp cyclone high-consistency desander, which solves the problem that the cyclone flow of pulp entering the desander is not stable enough, easily mixed and consumes some kinetic energy, and the speed decreases during the rotation process, thus affecting the centrifugal separation effect.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a pulp cyclone high-consistency desander, comprising a feed tee, a discharge pipe, a conical liner, a shell, and a sediment tank. The feed channel of the feed tee is tangentially arranged along the side wall of the feed tee. Both the feed tee and the discharge pipe are connected to the conical liner. The bottom of the conical liner is connected to the sediment tank inlet via a valve. The feed tee, discharge pipe, conical liner, and shell are detachably installed and integrated on a support frame. The inner wall of the feed tee is fixed with an axially oriented... The spiral blades are distributed around the circumference of the slurry outlet pipe arranged along the axial direction. The inner wall of the feed tee cylinder, the spiral blades, and the wall of the slurry outlet pipe form a spiral downward guiding channel. The upper end of the guiding channel is connected to the slurry inlet of the feed tee through the spiral blades. The upper end of the guiding channel is connected to the slurry inlet channel, and the spiral direction of the guiding channel is consistent with the cutting direction of the slurry inlet channel. The inner wall of the conical cylinder is fixed with conical spiral ribs distributed along the axial direction, and the spiral direction of the conical spiral ribs is consistent with that of the spiral blades.

[0006] Preferably, the top end of the feed tee is detachably connected to the slurry outlet pipe by bolts, and the bottom end of the feed tee is detachably connected to the housing by bolts.

[0007] Preferably, the top of the conical bladder is clamped between the feed tee and the housing, the conical bladder is detachably installed with the valve at the sludge inlet by bolts, and the housing is detachably installed with the support frame by bolts.

[0008] Preferably, the housing includes a left housing and a right housing, which are detachably installed by bolts.

[0009] Preferably, a buffer pad layer is provided in the inner cavity of both the left and right shells, and the shells surround the surface of the conical bladder through the buffer pad layer.

[0010] This utility model has the following beneficial effects:

[0011] This invention, by setting up spiral blades, a guide channel, and a conical spiral rib, allows the slurry entering the desander tangentially to flow down along the guide channel, improving the stability of the swirling flow and reducing mixing interference. After the slurry with stable swirling flow enters the conical chamber, it is guided by the conical spiral rib and continues to swirl downwards in the same direction, thereby maintaining the stability of the inertia and direction of centrifugal force. Heavy impurities flow stably towards the chamber wall under the action of centrifugal force, ensuring the stable separation of impurities from the slurry. Attached Figure Description

[0012] Figure 1 This is a front view of the present utility model;

[0013] Figure 2 This is a top view of the present invention;

[0014] Figure 3 This is a schematic diagram of the internal structure of this utility model;

[0015] Figure 4 This is a schematic diagram of the unfolded shell structure of this utility model;

[0016] Figure 5 This is a schematic diagram of the conical spiral rib structure inside the conical bladder of this utility model.

[0017] In the diagram: 1. Feed tee; 101. Slurry inlet channel; 2. Slurry outlet pipe; 3. Conical liner; 4. Shell; 41. Left shell; 42. Right shell; 43. Buffer pad; 5. Sedimentation tank; 6. Support frame; 7. Spiral blades; 8. Guide channel; 9. Conical spiral ribs. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] like Figure 1-5 As shown, this utility model provides a technical solution: a pulp cyclone high-consistency sand remover, including a feed tee 1, a pulp outlet pipe 2, a conical bladder 3, a shell 4, and a sediment tank 5. The pulp inlet channel 101 of the feed tee 1 is tangentially arranged along the side wall of the feed tee 1. The feed tee 1 and the pulp outlet pipe 2 are both connected to the conical bladder 3. The bottom of the conical bladder 3 is connected to the inlet of the sediment tank 5 through a valve. The feed tee 1, the pulp outlet pipe 2, the conical bladder 3, and the shell 4 can be detachably installed and integrated on the support frame 6.

[0020] The feed tee 1 is detachably connected to the slurry outlet pipe 2 by bolts at its top end and to the housing 4 by bolts at its bottom end. The top of the conical tank 3 is clamped between the feed tee 1 and the housing 4. The conical tank 3 is detachably connected to the valve at the inlet of the sediment tank 5 by bolts. The housing 4 is detachably connected to the support frame 6 by bolts. The housing 4 includes a left housing 41 and a right housing 42, which are detachably connected by bolts. Parts that are easily damaged during use can be replaced locally, resulting in low maintenance costs.

[0021] Both the left shell 41 and the right shell 42 are provided with a buffer pad 43 in their inner cavities. The shell 4 surrounds the surface of the conical bladder 3 through the buffer pad 43, and the buffer pad 43 achieves the effect of noise reduction.

[0022] The inner wall of the feed tee 1 is fixed with spiral blades 7 distributed along the axial direction. The spiral blades 7 surround the slurry outlet pipe 2 arranged along the axial direction. The inner wall of the feed tee 1, the spiral blades 7 and the pipe wall of the slurry outlet pipe 2 form a spiral downward guiding channel 8. The upper end of the guiding channel 8 is connected to the slurry inlet of the feed tee 1 through the spiral blades 7. The upper end of the guiding channel 8 is connected to the slurry inlet 101. The spiral direction of the guiding channel 8 is consistent with the tangential direction of the slurry inlet 101, so that the slurry entering the desander tangentially can flow down along the guiding channel 8, improve the stability of the vortex and reduce the interference of the mixed flow.

[0023] The inner wall of the conical bladder 3 is fixed with conical spiral ribs 9 distributed along the axial direction, and the spiral direction of the conical spiral ribs 9 is consistent with that of the spiral blades 7. After the slurry with stable swirling flow enters the conical bladder 3, it is guided by the conical spiral ribs 9 and continues to swirl downward in the same direction, thereby maintaining the inertia and directional stability of the centrifugal force. Heavy impurities flow stably towards the bladder wall under the action of centrifugal force, ensuring the stable separation of impurities from slurry.

[0024] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0025] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A paper pulp cyclone high concentration sand remover, comprising a feed tee (1), a pulp outlet pipe (2), a conical container (3), a shell (4) and a sludge tank (5), a pulp inlet channel (101) of the feed tee (1) is arranged tangentially along a side wall of the feed tee (1), the feed tee (1) and the pulp outlet pipe (2) are both communicated with the conical container (3), and a bottom of the conical container (3) is connected with an inlet of the sludge tank (5) through a valve, characterized in that: The feed tee joint (1), the slurry outlet pipe (2), the conical container (3) and the shell (4) are detachably installed and integrally arranged on the support frame (6), the inner wall of the cylinder of the feed tee joint (1) is fixed with spiral blades (7) distributed in the axial direction, the spiral blades (7) are circumferentially arranged around the slurry outlet pipe (2) arranged in the axial direction, the inner wall of the cylinder of the feed tee joint (1), the spiral blades (7) and the pipe wall of the slurry outlet pipe (2) form a spiral downward flow guide channel (8), and the upper end of the flow guide channel (8) is connected to the slurry inlet opening of the feed tee joint (1) through the spiral blades (7), the upper end of the flow guide channel (8) is connected to the slurry inlet channel (101), and the rotation direction of the flow guide channel (8) is consistent with the cutting direction of the slurry inlet channel (101), the inner wall of the conical container (3) is fixed with conical spiral ribs (9) distributed in the axial direction, and the spiral direction of the conical spiral ribs (9) is consistent with the spiral direction of the spiral blades (7). ​ 2. A paper pulp cyclonic high density sand eliminator according to claim 1, characterized in that: The top end of the feed tee joint (1) is detachably installed with the slurry outlet pipe (2) through bolts, and the bottom end of the feed tee joint (1) is detachably installed with the shell (4) through bolts.

3. A paper pulp cyclonic high density sand eliminator according to claim 2, characterized in that: The top of the conical container (3) is clamped between the feed tee joint (1) and the shell (4), the conical container (3) is detachably installed with the valve at the inlet of the sediment tank (5) through bolts, and the shell (4) is detachably installed with the support frame (6) through bolts.

4. A paper pulp cyclonic high density sand eliminator according to claim 3, characterized in that: The shell (4) comprises a left shell (41) and a right shell (42), and the left shell (41) and the right shell (42) are detachably installed through bolts.

5. A paper pulp cyclonic high density sand extractor according to claim 4, characterized in that: The left shell (41) and the right shell (42) are both provided with a buffer pad layer (43) in the inner cavity, and the shell (4) is surrounded on the surface of the conical container (3) through the buffer pad layer (43).

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