Single-screw press master

Abstract

The invention relates to the field of extrusion dewatering equipment, in particular to a single-screw press master which comprises a shell, an inner cavity of the shell is divided into a dewatering chamber and a pulp outlet chamber by a partition plate, a transversely-extending mesh cylinder is fixedly mounted in the dewatering chamber, a screw shaft is coaxially arranged in the mesh cylinder, and the end, away from a feeding port, of the mesh cylinder penetrates through the partition plate and extends into the pulp outlet chamber. A back pressure plate for blocking one end of the mesh cylinder is arranged in the pulp outlet chamber; an annular plate which is driven by a telescopic component to move in the axial direction of the net cylinder is installed on one side of the partition plate and located in the pulp outlet chamber, an annular rotary disc which is coaxial with the net cylinder is rotationally installed on one side of the annular plate, and a cutting knife is fixedly installed on the rotary disc; when the rotating disc drives the cutter to rotate to cut the pulp balls, the annular plate and the rotating disc are driven to reciprocate left and right in the axial direction of the net barrel through stretching of the adjusting air cylinder, so that the cutting range of the cutter is enlarged, and the pulp balls discharged from the right end of the net barrel are smashed more efficiently.

Description

Technical Field

[0001] The invention relates to the field of extrusion dehydration equipment, in particular to a single screw pulping machine. Background Art

[0002] The single screw press is a mechanical extrusion dehydration device that uses a variable diameter and variable pitch main shaft. The material passes through the variable pitch spiral blades and the variable diameter spiral main shaft, gradually compressing the volume of the material system, and the fluid medium in it is discharged from the system through the screen to achieve solid-liquid separation to increase the dryness of the material.

[0003] In the prior art, the utility model patent with application number CN202322499643.2 discloses a pulping mechanism of a single screw extruder that prevents pulping from being blocked. A pulping outlet is provided between the pulping box and the end of the extrusion barrel, a spiral shaft is passed through the pulping outlet, a back pressure plate is installed at the pulping outlet, a hollow rotating shaft is sleeved on the main body of the spiral shaft, a knife disc with an annular structure is fixedly installed on the inner end of the hollow rotating shaft, and a plurality of scrapers evenly distributed in a circle are installed on the knife disc, and the scrapers are distributed on the periphery of the back pressure plate and the adjusting component. During the rotation process, the scraper can timely cut and break up the pulp mass discharged after extrusion and dehydration, prevent the pulp mass from accumulating and blocking the pulping outlet, ensure the operation stability of the equipment, and ensure the normal and continuous operation of production.

[0004] However, the position of the scraper is fixed when it rotates, which is not convenient for efficiently breaking up the discharged pulp mass, and needs to be improved. Summary of the invention

[0005] The object of the present invention is to provide a single screw pulp squeezer which can efficiently break up the discharged pulp agglomerates to solve the defects mentioned in the above-mentioned background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A single-screw pulping machine comprises a shell, in which a partition is fixedly installed, the partition divides the inner cavity of the shell into a dewatering chamber and a pulp discharge chamber, a laterally extending mesh cylinder is fixedly installed in the dewatering chamber, a screw shaft driven to rotate by a driving motor is coaxially arranged in the mesh cylinder, one end of the mesh cylinder away from the feed port passes through the partition and extends into the pulp discharge chamber, a back pressure plate for blocking one end of the mesh cylinder is arranged in the pulp discharge chamber; an annular plate driven to move along the axial direction of the mesh cylinder by a telescopic component is installed on one side of the partition, the annular plate is located in the pulp discharge chamber, an annular turntable coaxially arranged with the mesh cylinder is rotatably installed on one side of the annular plate, a cutting knife is fixedly installed on the turntable; a gear driven to rotate by a motor is installed on the annular plate, the axial direction of the gear is parallel to the axis of the mesh cylinder, and a plurality of teeth meshing with the gear are evenly spaced circumferentially on the annular plate.

[0008] As a further improvement, a sliding column is fixedly mounted on the annular plate, the sliding column is parallel to the axis of the net cylinder, and the sliding column is slidably mounted on the partition.

[0009] As a further improvement, the telescopic component includes an adjusting cylinder, the cylinder body of the adjusting cylinder is fixedly mounted on the partition, the piston rod of the adjusting cylinder extends along a direction parallel to the axis of the mesh cylinder, and the annular plate is fixedly mounted on the piston rod of the adjusting cylinder.

[0010] As a further improvement, an arc-shaped guide rail is fixedly installed on one side of the annular plate, and the guide rail includes an inner guide rail and an outer guide rail. The inner guide rail and the outer guide rail are coaxially arranged in an arc shape, and the side of the inner guide rail away from the center of the circle and the side of the outer guide rail close to the center of the circle are respectively provided with coaxially arranged arc grooves, and the turntable is slidably installed between the arc grooves on the inner guide rail and the outer guide rail.

[0011] As a further improvement, one end of the cutting knife is fixedly mounted on the turntable between the inner guide rail and the outer guide rail, and the other end of the cutting knife extends toward the axis of the mesh cylinder.

[0012] As a further improvement, an annular groove is coaxially provided on one side of the rotating disk close to the partition plate, and a plurality of teeth are evenly spaced circumferentially provided on a peripheral wall of the annular groove.

[0013] As a further improvement, a feed pipe is fixedly installed on the top of the dewatering chamber, and the lower end of the feed pipe is connected to the top of one end of the mesh cylinder away from the pulp discharge chamber. A drainage pipe is fixedly installed on the bottom of the dewatering chamber, and a discharge pipe is fixedly installed on the bottom of the pulp discharge chamber.

[0014] As a further improvement, a base plate is provided under the shell, and support legs are fixedly installed between the shell and the base plate; the two ends of the spiral shaft respectively pass through the outside of the shell, and two support plates arranged opposite to each other are fixedly installed on the base plate, and the two ends of the spiral shaft are respectively rotatably installed on the corresponding support plates, and one end of the spiral shaft is connected to the drive motor.

[0015] As a further improvement, the back pressure plate is sleeved on the spiral shaft, a back pressure cylinder is provided in the pulp discharge chamber, the cylinder body of the back pressure cylinder is fixedly mounted on the inner wall of the pulp discharge chamber, the piston rod of the back pressure cylinder extends along a direction parallel to the axis of the net cylinder, and the back pressure plate is fixedly mounted on the piston rod of the back pressure cylinder.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The motor drives the gear to rotate, and the gear acts on the teeth on the turntable to drive the turntable to rotate. The turntable drives the cutting knife to rotate around the axis of the net cylinder. The cutting knife cuts and breaks the pulp mass discharged from the right end of the net cylinder, thereby preventing the pulp mass from clogging the net cylinder;

[0018] 2. When the turntable drives the cutting knife to rotate and cut the pulp mass, the annular plate and the turntable are driven to move back and forth along the axis of the net cylinder by adjusting the extension and contraction of the cylinder, thereby expanding the cutting range of the cutting knife and breaking up the pulp mass discharged from the right end of the net cylinder more efficiently. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0020] Figure 1 is a schematic structural diagram of an embodiment of the present invention;

[0021] Figure 2 is a schematic cross-sectional view of a housing according to an embodiment of the present invention;

[0022] Figure 3 yes Figure 2 Refuse to enlarge the picture;

[0023] Figure 4 is a schematic structural diagram of a turntable according to an embodiment of the present invention;

[0024] Figure 5 yes Figure 4 Explosion diagram of

[0025] Figure 6 yes Figure 5 Schematic diagram on the back.

[0026] In the figure: 1-shell; 2-bottom plate; 3-support leg; 4-partition; 5-dewatering chamber; 6-pulping chamber; 7-net cylinder; 8-driving motor; 9-screw shaft; 10-support plate; 11-feed pipe; 12-drain pipe; 13-discharge pipe; 14-back pressure plate; 15-back pressure cylinder; 16-annular plate; 17-turntable; 18-guide rail; 19-inner guide rail; 20-outer guide rail; 21-arc groove; 22-cutting knife; 23-motor; 24-gear; 25-annular groove; 26-tooth; 27-sliding column; 28-adjusting cylinder. DETAILED DESCRIPTION

[0027] 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 described embodiments 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 creative work are within the scope of protection of the present invention.

[0028] like Figures 1 to 6 As shown, a single screw pulping machine comprises a shell 1, which is in the shape of a long strip extending laterally. A bottom plate 2 is provided below the shell 1, and support legs 3 are fixedly installed between the left and right ends of the shell 1 and the bottom plate 2 respectively.

[0029] A vertically extending partition 4 is fixedly installed in the shell 1. The partition 4 divides the inner cavity of the shell 1 into a dewatering chamber 5 located on the left and a pulp discharge chamber 6 located on the right. A horizontally extending net cylinder 7 is fixedly installed in the dewatering chamber 5 by bolts. The left end of the net cylinder 7 abuts against the left wall of the dewatering chamber 5, and the right end of the net cylinder 7 passes through the partition 4 and extends into the pulp discharge chamber 6. A spiral shaft 9 driven to rotate by a drive motor 8 is coaxially arranged in the net cylinder 7. A spiral blade is welded on the spiral shaft 9 located in the net cylinder 7. The left and right ends of the spiral shaft 9 pass through the outside of the shell 1 respectively. Two support plates 10 arranged opposite to each other on the left and right are fixedly installed on the bottom plate by bolts. The shell 1 is located between the two support plates 10. The left and right ends of the spiral shaft 9 are rotatably installed on the corresponding support plates 10 through bearings respectively. The drive motor 8 is installed on the bottom plate 2 by bolts, and one end of the spiral shaft 9 passes through the rotating shaft connected to the drive motor 8.

[0030] A feed pipe 11 is fixedly installed on the left side of the top of the dewatering chamber 5 by bolts, and the lower end of the feed pipe 11 is connected to the left top of the net cylinder 7; a drain pipe 12 is fixedly installed on the bottom of the dewatering chamber 5; and a discharge pipe 13 is fixedly installed on the bottom of the pulp discharge chamber 6.

[0031] like Figure 2 and Figure 3 As shown, a back pressure plate 14 for sealing the right end of the mesh cylinder 7 is provided in the pulp discharge chamber 6. The back pressure plate 14 is annular and is sleeved on the spiral shaft 9 located in the pulp discharge chamber 6. A back pressure cylinder 15 is provided in the pulp discharge chamber 6. The cylinder body of the back pressure cylinder 15 is fixedly installed on the right side wall of the pulp discharge chamber 6 by bolts. The piston rod of the back pressure cylinder 15 extends to the left along the axial direction parallel to the mesh cylinder 7. The back pressure plate 14 is fixedly installed on the piston rod of the back pressure cylinder 15 by bolts. The back pressure cylinder 15 pushes the back pressure plate 14 to the left and presses against the right end of the mesh cylinder 7.

[0032] The slurry to be dehydrated is added to the mesh cylinder 7 through the feed pipe 11, and the screw shaft 9 is driven by the driving motor 8 to rotate. The screw shaft 9 transports the slurry to the right to the pulp discharge chamber 6. Under the obstruction of the back pressure plate 14, the screw shaft 9 compresses the slurry to the right to dehydrate the slurry. The removed water flows through the mesh cylinder 7 to the bottom of the dehydration chamber 5 and is discharged through the drain pipe 12. As the screw shaft 9 continuously squeezes the slurry, when the thrust of the screw shaft on the slurry is greater than the thrust of the back pressure cylinder 15 on the back pressure plate 14, the back pressure plate 14 is pushed to the right by the slurry in the mesh cylinder 7, and then the dehydrated pulp mass in the right end of the mesh cylinder 7 is discharged into the pulp discharge chamber 6 between the back pressure plate 14 and the right end of the mesh cylinder 7.

[0033] like Figure 4 and Figure 5 As shown, an annular plate 16 is installed on the right side of the partition plate 4 and is driven by a telescopic component to move left and right along the axial direction of the net cylinder 7. The annular plate 16 is located in the pulp discharge chamber 6. An annular turntable 17 coaxially arranged with the net cylinder 7 is rotatably installed on the right side of the annular plate 16. An arc-shaped guide rail 18 is fixedly installed on the right side of the annular plate 16. A plurality of groups of guide rails 18 are evenly spaced around the axis of the net cylinder 7. The guide rail 18 includes an inner guide rail 19 and an outer guide rail 20. The inner guide rail 19 and the outer guide rail 20 are coaxially arranged in an arc shape. The inner guide rail 19 is located on the side of the outer guide rail 20 close to the center of the circle. The inner guide rail 19 and the outer guide rail 20 are respectively fixedly installed on the annular plate 16 by bolts. The side of the inner guide rail 19 away from the center of the circle and the side of the outer guide rail 20 close to the center of the circle are respectively provided with coaxially arranged arc grooves 21. The turntable 17 is slidably installed between the arc grooves 21 on the inner guide rail 19 and the outer guide rail 20. The turntable 17 rotates around its own axis while sliding along the arc groove 21.

[0034] like Figure 5 and Figure 6 As shown, the inner diameters of the annular plate 16 and the rotating disk 17 are both larger than the outer diameters of the net cylinder 7 and the back pressure disk 14. A cutting blade 22 is fixedly installed on the right side of the rotating disk 17 by bolts. In this embodiment, two cutting blades 22 are symmetrically arranged along the axis of the rotating disk 17. A motor 23 is installed on the left side of the annular plate 16 by bolts. A avoiding groove is arranged at the position corresponding to the position of the partition 4 and the motor 23. The rotating shaft of the motor 23 passes through the partition 4 to the right and is fixedly installed with a gear 24. An annular groove 25 is coaxially arranged on the left side of the annular plate 16. A plurality of teeth 26 meshing with the gear 24 are evenly spaced circumferentially on the peripheral wall of the outer ring of the annular groove 25.

[0035] One end of the cutting knife 22 is fixedly installed on the right side of the turntable 17 between the inner guide rail 19 and the outer guide rail 20 by bolts, and the other end of the cutting knife 22 extends toward the axis of the mesh cylinder 7. The distance between the inner ends of the two cutting knives 22 is greater than the diameter of the mesh cylinder 7 and greater than the diameter of the back pressure plate 14.

[0036] When the dehydrated pulp mass is discharged between the back pressure plate 14 and the right end of the net cylinder 7, the motor 23 drives the gear 24 to rotate, and the gear 24 acts on the teeth 26 on the turntable 17 to drive the turntable 17 to rotate. The turntable 17 drives the cutting knife 22 to rotate around the axis of the net cylinder 7, and the cutting knife 22 cuts and breaks the pulp mass discharged from the right end of the net cylinder 7, thereby preventing the pulp mass from clogging the net cylinder 7.

[0037] A sliding column 27 is welded to the left side of the annular plate 16 . A plurality of sliding columns 27 are evenly spaced around the circumference of the annular plate 16 . The sliding columns 27 extend left and right parallel to the axis of the net cylinder 7 . The sliding columns 27 are slidably mounted on the partition plate 4 .

[0038] The telescopic component includes an adjusting cylinder 28, the cylinder body of the adjusting cylinder 28 is fixedly installed on the left side of the partition 4, the piston rod of the adjusting cylinder 28 extends to the right along the axis direction parallel to the net tube 7, and the annular plate 16 is fixedly installed on the piston rod of the adjusting cylinder 28 by bolts.

[0039] When the turntable 17 drives the cutting knife 22 to rotate and cut the pulp mass, the annular plate 16 and the turntable 17 are driven to move back and forth along the axial direction of the net cylinder 7 by adjusting the extension and contraction of the cylinder 28, thereby expanding the cutting range of the cutting knife 22 and more efficiently breaking up the pulp mass discharged from the right end of the net cylinder 7.

[0040] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A single screw extruder, characterized in that: It comprises a shell, in which a partition is fixedly installed, the partition divides the inner cavity of the shell into a dewatering chamber and a pulp discharge chamber, a laterally extending mesh cylinder is fixedly installed in the dewatering chamber, a spiral shaft driven to rotate by a driving motor is coaxially arranged in the mesh cylinder, one end of the mesh cylinder away from the feed port passes through the partition and extends into the pulp discharge chamber, a back pressure plate for blocking one end of the mesh cylinder is arranged in the pulp discharge chamber; an annular plate driven to move along the axial direction of the mesh cylinder by a telescopic component is installed on one side of the partition, the annular plate is located in the pulp discharge chamber, an annular turntable coaxially arranged with the mesh cylinder is rotatably installed on one side of the annular plate, a cutting knife is fixedly installed on the turntable; a gear driven to rotate by a motor is installed on the annular plate, the axial direction of the gear is parallel to the axis of the mesh cylinder, and a plurality of teeth meshing with the gear are evenly spaced circumferentially on the annular plate.

2. A single screw extruder as claimed in claim 1, characterized in that: A sliding column is fixedly mounted on the annular plate, the sliding column is parallel to the axis of the net cylinder, and the sliding column is slidably mounted on the partition.

3. A single screw extruder as claimed in claim 1, characterized in that: The telescopic component comprises an adjusting cylinder, a cylinder body of the adjusting cylinder is fixedly mounted on the partition, a piston rod of the adjusting cylinder extends in a direction parallel to the axis of the net cylinder, and the annular plate is fixedly mounted on the piston rod of the adjusting cylinder.

4. A single screw extruder as claimed in claim 1, characterized in that: An arc-shaped guide rail is fixedly installed on one side of the annular plate, and the guide rail includes an inner guide rail and an outer guide rail. The inner guide rail and the outer guide rail are coaxially arranged in an arc shape, and a side of the inner guide rail away from the center of the circle and a side of the outer guide rail close to the center of the circle are respectively provided with coaxially arranged arc grooves, and the turntable is slidably installed between the arc grooves on the inner guide rail and the outer guide rail.

5. A single screw extruder as claimed in claim 4, characterized in that: One end of the cutting knife is fixedly mounted on the turntable between the inner guide rail and the outer guide rail, and the other end of the cutting knife extends toward the axis of the net cylinder.

6. A single screw extruder as claimed in claim 1, characterized in that: An annular groove is coaxially arranged on one side of the rotating disk close to the partition plate, and a plurality of teeth are evenly spaced circumferentially arranged on a peripheral wall of the annular groove.

7. A single screw extruder as claimed in claim 1, characterized in that: A feed pipe is fixedly installed on the top of the dewatering chamber, and the lower end of the feed pipe is connected to the top of one end of the mesh cylinder away from the pulp discharge chamber. A drainage pipe is fixedly installed on the bottom of the dewatering chamber, and a discharge pipe is fixedly installed on the bottom of the pulp discharge chamber.

8. A single screw extruder as claimed in claim 1, characterized in that: A bottom plate is provided under the shell, and support legs are fixedly installed between the shell and the bottom plate; the two ends of the spiral shaft respectively pass through the outside of the shell, and two support plates arranged opposite to each other are fixedly installed on the bottom plate, and the two ends of the spiral shaft are respectively rotatably installed on the corresponding support plates, and one end of the spiral shaft is connected to the drive motor.

9. A single screw extruder as claimed in claim 1, characterized in that: The back pressure plate is sleeved on the spiral shaft, a back pressure cylinder is arranged in the pulp discharge chamber, a cylinder body of the back pressure cylinder is fixedly mounted on the inner wall of the pulp discharge chamber, a piston rod of the back pressure cylinder extends along a direction parallel to the axis of the net cylinder, and the back pressure plate is fixedly mounted on the piston rod of the back pressure cylinder.

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