CN219749025U - Feeding buffer device for improving concentration effect of screw extruder - Google Patents

Feeding buffer device for improving concentration effect of screw extruder Download PDF

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Publication number
CN219749025U
CN219749025U CN202321127726.2U CN202321127726U CN219749025U CN 219749025 U CN219749025 U CN 219749025U CN 202321127726 U CN202321127726 U CN 202321127726U CN 219749025 U CN219749025 U CN 219749025U
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China
Prior art keywords
buffer
liquid level
screw extruder
buffer tank
concentration
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CN202321127726.2U
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Chinese (zh)
Inventor
韩陈晓
刘春兰
智少松
田宝农
唐增明
张向荣
路文亮
秦滨财
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Shandong Kemai Bio Pulping Co ltd
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Shandong Kemai Bio Pulping Co ltd
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Priority to CN202321127726.2U priority Critical patent/CN219749025U/en
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Publication of CN219749025U publication Critical patent/CN219749025U/en
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Abstract

The utility model discloses a feeding buffer device for improving the concentration effect of a screw extruder, which comprises a buffer box, wherein the buffer box is positioned between a storage bin and the screw extruder, and the storage bin and the buffer box are fixedly arranged in a frame along the vertical direction; two liquid level sensors which are arranged up and down are arranged on the side wall of the buffer tank, the liquid level sensor at the upper part is arranged at 60% of the liquid level of the buffer tank, and the liquid level sensor at the lower part is arranged at 20% of the liquid level of the buffer tank; the two liquid level sensors are connected with an input port of the PLC control module through cables, and an output port of the PLC control module is connected with the spiral motor through cables. The feeding buffer device provided by the utility model can stabilize the pulp feeding amount of the pressing screw, ensure that the pulp discharging concentration of the pressing screw meets the process requirement, and improve the pulp quality.

Description

Feeding buffer device for improving concentration effect of screw extruder
Technical Field
The utility model relates to a feeding buffer device for improving a concentration effect of a screw extruder, and belongs to the technical field.
Background
The working principle of the screw extruder is that a screw assembly with unchanged outer diameter, unchanged inner diameter and changed screw pitch is adopted to rotate, mixed liquid conveyed from the upper part of the equipment is continuously rolled in, and the mixed liquid is separated along with the continuous reduction of the volume of the screw assembly, so that the aim of extrusion is fulfilled.
Press screw action: washing and concentrating the slurry after high-concentration grinding, extruding the dissolved matters in the reaction process, and playing a key role in washing and purifying the slurry and on the cleanliness of the slurry. However, as the equipment is designed according to full production, when the pulp feeding amount is small, the discharge end of the pressing screw cannot stably form a material plug, so that the pulp outlet concentration is small, the high-concentration filtrate extraction rate is low, the extrusion effect is poor, a large amount of dissolved matters of raw materials in the cooking softening process are taken away along with the pulp, the operation efficiency of the back-end equipment is not facilitated, and the pulp forming quality is also not facilitated.
In summary, it is clear that the prior art has inconvenience and defects in practical use, so that improvement is needed.
Disclosure of Invention
Aiming at the defects in the background technology, the utility model provides the feeding buffer device for improving the concentration effect of the screw extruder, which can stabilize the pulp feeding amount of the press screw, ensure that the pulp outlet concentration of the press screw meets the technological requirement and improve the pulp quality.
In order to solve the technical problems, the utility model adopts the following technical scheme:
the feeding buffer device for improving the concentration effect of the screw extruder comprises a buffer box, wherein the buffer box is positioned between a storage bin and the screw extruder, and the storage bin and the buffer box are fixedly arranged in a frame along the vertical direction;
two liquid level sensors which are arranged up and down are arranged on the side wall of the buffer tank, the liquid level sensor at the upper part is arranged at 60% of the liquid level of the buffer tank, and the liquid level sensor at the lower part is arranged at 20% of the liquid level of the buffer tank;
the two liquid level sensors are connected with an input port of the PLC control module through cables, and an output port of the PLC control module is connected with the spiral motor through cables.
An optimization scheme is that the top of a buffer box is communicated with the bottom of a storage bin, a flexible connecting pipe is arranged at the bottom of the buffer box, and the buffer box is communicated with a feed inlet of a screw extruder through the flexible connecting pipe.
Further, a mounting hole for mounting the liquid level sensor is formed in the side wall of the buffer box, and the axis of the mounting hole is horizontally arranged.
Further, the liquid level sensor comprises a sensor main body outside the buffer tank and a probe inside the buffer tank.
Further, a sealing flange is arranged on one side of the sensor main body, which is close to the buffer tank, a sealing plate with an annular structure is arranged between the sealing flange and the outer wall of the buffer tank, and the sealing flange is connected with the buffer tank through bolts.
Further, a supporting beam for supporting the buffer box is arranged in the frame.
Further, the bottom of the frame is provided with a roller which is convenient to move, and the lower part of the main body of the frame is provided with an avoidance port.
Further, the spiral motor is a variable frequency motor.
After the technical scheme is adopted, compared with the prior art, the utility model has the following advantages:
through setting up the buffer tank between feed bin and screw extruder's feed inlet, when the material arrives 60% liquid level departments of buffer tank 1, squeeze the spiral rotation and realize the extrusion to the material, when the material descends to 20% liquid level departments of buffer tank, squeeze the spiral and stop moving to form material stopper and moment of torsion in guaranteeing to squeeze the spiral, thereby avoid because too little material gets into to squeeze the spiral, no extrusion effect. According to the liquid level adjustment, the stability of the incoming material is ensured, the concentration of the extruded spiral pulp reaches the process requirement, and the pulp quality is improved.
The utility model will now be described in detail with reference to the drawings and examples.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a schematic view of the structure of the frame in the present utility model;
FIG. 3 is a schematic view of the installation of the level sensor of the present utility model;
fig. 4 is a state of use diagram of the present utility model.
In the figure, a 1-buffer box, a 2-bin, a 3-rack, a 4-supporting beam, a 5-avoiding port, a 6-screw extruder, 7-rollers, an 8-flexible connecting pipe, a 9-feeding port, a 10-mounting hole, an 11-liquid level sensor, a 12-sensor main body, a 13-probe, a 14-sealing flange, a 15-sealing plate, a 16-PLC control module and a 17-screw motor are arranged.
Detailed Description
For a clearer understanding of technical features, objects, and effects of the present utility model, a specific embodiment of the present utility model will be described with reference to the accompanying drawings.
As shown in fig. 1-4 together, the utility model provides a feeding buffer device for improving the concentration effect of a screw extruder, which comprises a buffer box 1, wherein the buffer box 1 is positioned between a storage bin 2 and the screw extruder 6, the top end of the buffer box 1 is communicated with the bottom of the storage bin 2, a flexible connecting pipe 8 is arranged at the bottom end of the buffer box 1, and the buffer box 1 is communicated with a feeding hole 9 of the screw extruder 6 through the flexible connecting pipe 8.
The storage bin 2 and the buffer box 1 are fixedly arranged inside the frame 3 along the vertical direction, and a supporting beam 4 for supporting the buffer box 1 is arranged inside the frame 3. The bottom of the frame 3 is provided with a roller 7 convenient to move, the lower part of the main body of the frame 3 is provided with an avoidance port 5, and the frame 3 is arranged above the screw extruder 6 in a moving way through the avoidance port 5.
Two liquid level sensors 11 which are arranged up and down are arranged on the side wall of the buffer tank 1, the liquid level sensor 11 at the upper part is arranged at 60% of the liquid level of the buffer tank 1, and the liquid level sensor 11 at the lower part is arranged at 20% of the liquid level of the buffer tank 1.
The side wall of the buffer tank 1 is provided with a mounting hole 10 for mounting a liquid level sensor 11, and the axis of the mounting hole 10 is horizontally arranged.
The liquid level sensor 11 include the outside sensor main part 12 of buffer tank 1 and the inside probe 13 of buffer tank 1, one side that sensor main part 12 is close to buffer tank 1 is equipped with sealing flange 14, is equipped with annular structure's closing plate 15 between sealing flange 14 and the buffer tank 1 outer wall, sealing flange 14 passes through bolted connection with buffer tank 1, sealing flange 14 realizes the extrusion to closing plate 15 in the connection in-process with buffer tank 1 to realize the sealing to mounting hole 10, prevent that the weeping phenomenon from appearing in mounting hole 10 department.
The two liquid level sensors 11 are connected with an input port of the PLC control module 16 through cables, and an output port of the PLC control module 16 is connected with the spiral motor 17 through cables.
The spiral motor 17 is a variable frequency motor.
When the material in the buffer box 1 reaches 60% of the liquid level of the buffer box 1, the liquid level sensor 11 at the upper part transmits a signal to the PLC control module 16, the PLC control module 16 controls the screw motor 17 to be started, and the screw motor 17 drives the pressing screw to rotate so as to extrude the material; when the material descends to 20% liquid level of the buffer tank 1, the liquid level sensor 11 at the lower part transmits a signal to the PLC control module 16, the PLC control module 16 controls the screw motor 17 to be closed, and the screw is pressed to stop moving.
The specific working principle of the utility model is as follows:
by providing the buffer tank 1 between the silo 2 and the feed inlet 9 of the screw extruder 6, the material in the silo 2 first enters the buffer tank 1 and then the screw extruder 6. When the liquid level sensor 11 at the upper part detects that the material reaches 60% of the liquid level of the buffer tank 1, a signal is transmitted to the PLC control module 16, the PLC control module 16 controls the opening of the spiral motor 17, and the spiral motor 17 drives the pressing spiral to rotate so as to extrude the material; when the liquid level sensor 11 at the lower part detects that the material descends to the 20% liquid level of the buffer box 1, a signal is transmitted to the PLC control module 16, the PLC control module 16 controls the screw motor 17 to be closed, and the pressing screw stops moving, so that a material plug and torque are formed in the pressing screw, and the situation that too little material enters the pressing screw and no extrusion effect is caused is avoided. According to the liquid level regulation, the stability of the incoming material is ensured.
Before the utility model is adopted, the pulp inlet flow is between 18 tons/hour and 22 tons/hour, the pulp inlet concentration is 10% -12%, the pulp outlet dryness is more than 25% when the pulp inlet quantity is more, and the pulp outlet dryness is 18-20% when the pulp inlet quantity is less.
The foregoing is illustrative of the best mode of carrying out the utility model, and is not presented in any detail as is known to those of ordinary skill in the art. The protection scope of the utility model is defined by the claims, and any equivalent transformation based on the technical teaching of the utility model is also within the protection scope of the utility model.

Claims (8)

1. Feeding buffer device for improving concentration effect of screw extruder, which is characterized in that: the device comprises a buffer box (1), wherein the buffer box (1) is positioned between a storage bin (2) and a screw extruder (6), and the storage bin (2) and the buffer box (1) are fixedly arranged in a frame (3) along the vertical direction;
two liquid level sensors (11) which are arranged up and down are arranged on the side wall of the buffer tank (1), the liquid level sensor (11) at the upper part is arranged at 60% of the liquid level of the buffer tank (1), and the liquid level sensor (11) at the lower part is arranged at 20% of the liquid level of the buffer tank (1);
the two liquid level sensors (11) are connected with an input port of the PLC control module (16) through cables, and an output port of the PLC control module (16) is connected with the spiral motor (17) through cables.
2. A feed buffer device for enhancing the concentration of a screw extruder as claimed in claim 1, wherein: the top of buffer tank (1) is linked together with feed bin (2) bottom and sets up, and the bottom of buffer tank (1) is equipped with flexible connecting pipe (8), and buffer tank (1) is linked together through flexible connecting pipe (8) and feed inlet (9) of screw extruder (6) and is set up.
3. A feed buffer device for enhancing the concentration of a screw extruder as claimed in claim 1, wherein: the side wall of the buffer box (1) is provided with a mounting hole (10) for mounting the liquid level sensor (11), and the axis of the mounting hole (10) is horizontally arranged.
4. A feed buffer device for enhancing the concentration of a screw extruder as claimed in claim 1, wherein: the liquid level sensor (11) comprises a sensor main body (12) outside the buffer tank (1) and a probe (13) inside the buffer tank (1).
5. The feed buffer device for improving the concentration effect of a screw extruder of claim 4, wherein: one side of the sensor main body (12) close to the buffer box (1) is provided with a sealing flange (14), a sealing plate (15) with an annular structure is arranged between the sealing flange (14) and the outer wall of the buffer box (1), and the sealing flange (14) is connected with the buffer box (1) through bolts.
6. A feed buffer device for enhancing the concentration of a screw extruder as claimed in claim 1, wherein: the inside of the frame (3) is provided with a supporting beam (4) for supporting the buffer box (1).
7. A feed buffer device for enhancing the concentration of a screw extruder as claimed in claim 1, wherein: the bottom of the frame (3) is provided with a roller (7) which is convenient to move, and the lower part of the main body of the frame (3) is provided with an avoidance opening (5).
8. A feed buffer device for enhancing the concentration of a screw extruder as claimed in claim 1, wherein: the spiral motor (17) is a variable frequency motor.
CN202321127726.2U 2023-05-11 2023-05-11 Feeding buffer device for improving concentration effect of screw extruder Active CN219749025U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202321127726.2U CN219749025U (en) 2023-05-11 2023-05-11 Feeding buffer device for improving concentration effect of screw extruder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202321127726.2U CN219749025U (en) 2023-05-11 2023-05-11 Feeding buffer device for improving concentration effect of screw extruder

Publications (1)

Publication Number Publication Date
CN219749025U true CN219749025U (en) 2023-09-26

Family

ID=88081707

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202321127726.2U Active CN219749025U (en) 2023-05-11 2023-05-11 Feeding buffer device for improving concentration effect of screw extruder

Country Status (1)

Country Link
CN (1) CN219749025U (en)

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