Anti-lock shaft extrusion equipment

Abstract

The utility model belongs to the technical field of screw extrusion equipment, and particularly discloses anti-shaft-sticking extrusion equipment which comprises a rack, a screw conveying mechanism, a screw conveying mechanism and an anti-shaft-sticking extrusion mechanism, the spiral conveying mechanism comprises a driving mechanism, an auger shaft and a spiral blade, the driving mechanism is connected with the auger shaft, the spiral blade is arranged on the auger shaft, and the spiral blade is partially cut off; the screen cylinder is coaxially arranged outside the spiral conveying mechanism in a sleeving manner, a shifting block is arranged on the screen cylinder, and the shifting block is designed corresponding to the cut-off position of the spiral blade; and the discharging port assembly is arranged at a discharging port in the tail end of the screen barrel and used for extruding the materials conveyed by the spiral conveying mechanism. The extrusion material processing efficiency is high, the water content of discharged materials is low after the materials are extruded, and the shaft sticking phenomenon cannot occur in the spiral auger conveying process.

Description

Technical Field

[0001] This utility model belongs to the technical field of spiral extrusion equipment, and in particular relates to an anti-shaft-seize extrusion equipment. Background Technology

[0002] Screw extruders are generally used in industries such as sewage treatment and food processing to separate solids and liquids, dehydrate and reduce the volume of materials.

[0003] However, existing extruders on the market have problems such as low processing capacity and high output moisture content, and the shaft may seize during the screw conveyor process. Therefore, how to design an extrusion device that can improve the processing efficiency of screw extruders and prevent shaft seizure has become a key issue in the existing technology field. Utility Model Content

[0004] In order to overcome the above-mentioned shortcomings of the prior art, this utility model provides an anti-shaft compression device, which solves the above problems.

[0005] To achieve the above objectives, this utility model discloses an anti-shaft compression device, comprising:

[0006] A frame, on which a screw conveyor mechanism is provided;

[0007] A screw conveyor mechanism, comprising a drive mechanism, an auger shaft, and screw blades, wherein the drive mechanism is connected to the auger shaft, the screw blades are mounted on the auger shaft, and the screw blades are partially cut off;

[0008] A screen cylinder is coaxially sleeved outside the spiral conveying mechanism. The screen cylinder is provided with a lever, which is designed to correspond to the cut-off position of the spiral blade.

[0009] The discharge port assembly is located at the discharge port at the end of the screen cylinder and is used to compress the material conveyed by the screw conveyor mechanism.

[0010] Compared with existing technologies, this application has the following advantages: During use, material enters the screen cylinder through the feed inlet. The drive mechanism drives the auger shaft to rotate, which in turn drives the material towards the discharge port assembly via the spiral blades. The discharge port assembly is used to block the material, i.e., to squeeze the material at the discharge port assembly, thereby completing the liquid separation in the material. During the conveying and squeezing process, solids remain inside the screen cylinder, while liquids are discharged through the screen cylinder. This application, through the design of partially cut-off spiral blades, allows material to accumulate at the cut-off position of adjacent spiral blades. The material at the rear end is continuously propelled forward by the auger shaft and spiral blades, squeezing the material stuck at the cut-off position. This creates an intermittent conveying and squeezing chamber at the cut-off position. The squeezing and filtration within the chamber improves the efficiency of the equipment and reduces the output moisture content. Simultaneously, if the material in the squeezing chamber cannot be conveyed out in time, it is prone to shaft seizure. Therefore, the design of the prying block automatically disperses the material during rotation, ensuring that the shaft seizure problem is automatically resolved.

[0011] Furthermore, the spiral blades on the auger shaft are arranged in a double-blade configuration that rotates 180°.

[0012] Furthermore, the diameter of the auger shaft gradually increases according to the material conveying direction.

[0013] Furthermore, the spiral blades gradually become thicker according to the material conveying direction.

[0014] Furthermore, the spiral blades at the very end, according to the material conveying direction, are provided with a tungsten carbide coating.

[0015] Furthermore, the discharge port assembly includes a spring, a fixing member, and a pressure plate disposed at the discharge port. One end of the fixing member is connected to the auger shaft via a bearing seat, and the other end is connected to the pressure plate via a spring. The pressure plate is clearance-fitted with the auger shaft and squeezes the material conveyed by the auger shaft under the pressure of the spring.

[0016] Furthermore, it also includes an adjusting rod disposed on the fixing member, one end of which is connected to the fixing member and its length is adjustable, and the other end of which is connected to the spring.

[0017] Furthermore, the frame is provided with a baffle located around the discharge port.

[0018] Furthermore, the screen cylinder has a split structure and is fixed to the rectangular plate of the frame by a flange.

[0019] Furthermore, the cover plate and side plate on the outside of the screen cylinder are both fastened to the L-shaped plate of the frame. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of an anti-shaft extrusion device according to an embodiment of the present utility model;

[0022] Figure 2 This is a schematic diagram of the structure behind the hidden cover plate and side plate in an embodiment of the present utility model;

[0023] Figure 3 This is a schematic diagram of the structure behind the concealed cover plate, side plate, and screen cylinder in an embodiment of this utility model.

[0024] The attached figures are labeled as follows:

[0025] 1. Frame; 2. Drive mechanism; 3. Screw shaft; 4. Spiral blades; 5. Screen cylinder; 6. Pulley; 7. Cut-off position; 8. Coupling; 9. Discharge port; 10. Feed port; 11. Spring; 12. Fixing component; 13. Pressure plate; 14. Bearing seat; 15. Adjusting rod; 16. Baffle; 17. Rectangular plate; 18. Flange; 19. Cover plate; 20. Side plate; 21. L-shaped plate. Detailed Implementation

[0026] 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.

[0027] like Figure 1-3 As shown, this utility model discloses an anti-shaft compression device, comprising:

[0028] Frame 1, on which a screw conveyor mechanism is provided;

[0029] The screw conveyor mechanism includes a drive mechanism 2, an auger shaft 3 and a screw blade 4. The drive mechanism 2 is connected to the auger shaft 3. The screw blade 4 is provided on the auger shaft 3 and is partially cut off.

[0030] Screen cylinder 5 is coaxially sleeved outside the screw conveyor mechanism. Screen cylinder 5 is equipped with a lever 6. The lever 6 is designed to correspond to the cut-off position of the screw blade 4. Screen cylinder 5 can be made of wedge-shaped screen. Multiple reinforcing rings are welded to the outside, and flanges 18 are welded to both sides. It can be detachably fixed to the frame 1 through the flanges 18.

[0031] The discharge port assembly is located at the discharge port 9 at the end of the screen cylinder 5 and is used to squeeze the material conveyed by the screw conveyor mechanism.

[0032] In one embodiment, the spiral blades 4 are cut off at appropriate positions in the first, second, and third channels along the direction from the feed inlet 10 to the discharge outlet 9 to form broken teeth, and a pawl 6 is welded to the corresponding position on the screen cylinder 5. The gap between the pawl 6 and the blade cross-section is 1cm to prevent interference caused by the back-and-forth movement of the auger shaft 3.

[0033] Compared with the prior art, this application has the following advantages: When in use, the material enters the screen cylinder 5 through the feed port 10. The drive mechanism 2 drives the auger shaft 3 to rotate, and then drives the material to move towards the discharge port assembly through the spiral blades 4. The discharge port assembly is used to block the material, that is, to squeeze the material at the discharge port assembly, thereby completing the liquid separation in the material. During the conveying and squeezing process, the solid remains in the screen cylinder 5, and the liquid is discharged through the screen cylinder. This application utilizes a design that cuts the spiral blades into four sections. Material accumulates at the cut-off points of adjacent spiral blades 4, while the material at the rear end is continuously propelled forward by the auger shaft 3 and spiral blades 4, compressing the material stuck at the cut-off point 7. This creates a compression chamber at the cut-off point 7 that provides intermittent conveying and compression. The compression and filtration within the compression chamber improves the efficiency of the equipment and reduces the output moisture content. Simultaneously, if the material in the compression chamber cannot be conveyed out in time, it is highly susceptible to shaft seizure. Therefore, the design of the lever 6 automatically disperses the material during rotation, ensuring that the shaft seizure problem is automatically resolved.

[0034] It should be noted that the drive mechanism 2 may include a geared motor, which is connected to a coupling 8. The coupling 8 is then connected to the auger shaft 3 via a key connection. The auger shaft 3 is fixed to the frame 1 via front and rear bearings.

[0035] Following the above embodiment, a more preferable embodiment is that the spiral blades 4 on the auger shaft 3 are arranged in a double-blade configuration with a 180° rotation. This double-layer spiral blade layout allows for more even material distribution at the discharge port 9, preventing the material from concentrating at the top or bottom of the discharge port 9, as is the case with single-layer spiral blades 4, which hinders compression.

[0036] Following the above embodiment, a more preferable approach is to gradually increase the diameter of the auger shaft 3 according to the material conveying direction. This variable diameter design allows the auger shaft 3 to gradually decrease in diameter during the extrusion process, thereby gradually increasing the extrusion force in the material's forward direction. This design results in a gradual increase in the extrusion force on the material during the extrusion process, which helps to more effectively compress the material into the desired shape and density.

[0037] Following the above embodiment, a more preferable embodiment is that the spiral blades 4 gradually become thicker according to the material conveying direction. This is because the spiral blades 4 experience greater pressure closer to the discharge port 9, thereby improving the service life of the spiral blades 4.

[0038] Following the above embodiment, more preferably, the helical blade 4 at the very end of the material conveying direction is provided with a tungsten carbide coating to ensure the wear resistance of the blade.

[0039] Following the above embodiment, more specifically, the discharge port assembly includes a spring 11, a fixing member 12, and a pressure plate 13 disposed at the discharge port 9. One end of the fixing member 12 is connected to the auger shaft 3 via a bearing seat 14, and the other end is connected to the pressure plate 13 via the spring 11. The pressure plate 13 is in clearance fit with the auger shaft 3 and squeezes the material conveyed by the auger shaft 3 under the pressure of the spring 11. The pressure plate 13 can be a circular back pressure plate. When the auger shaft conveys the material to the discharge port 9, it is blocked by the back pressure of the pressure plate 13, and the filtrate of the squeezed material flows out from the gap of the screen cylinder 5. At the same time, the material continues to exert a pushing force to push the pressure plate 13 to move. When this pushing force is greater than the force exerted by the spring 11 on the pressure plate 13, the pressure plate 13 will move away from the discharge port 9, so that the dehydrated material is squeezed out from the gap between the discharge port 9 and the pressure plate 13.

[0040] Following the above embodiment, a more preferred embodiment further includes an adjusting rod 15 disposed on the fixing member 12. One end of the adjusting rod 15 is connected to the fixing member 12 and its length is adjustable, while the other end is connected to a spring 11. The adjusting rod 15 can be a bolt, which is threadedly connected to the fixing member 12. The other end of the bolt is connected to the spring 11. By adjusting the amount of compression of the spring 11 by the bolt, the extrusion pressure of the material can be controlled, thereby changing the output moisture content.

[0041] Following the above embodiment, more preferably, a baffle 16 is provided on the frame 1 around the discharge port 9, which facilitates the collection of the material extruded from the discharge port 9.

[0042] Following the above embodiments, a more preferred embodiment is that the screen cylinder 5 has a split structure, which is fixed to the rectangular plate 17 of the frame 1 by the flange 18. The split design makes the screen cylinder 5 easy to assemble and replace.

[0043] Following the above embodiment, more preferably, the cover plate 19 and side plate 20 on the outer side of the screen cylinder 5 are both snapped onto the L-shaped plate 21 of the frame 1. Because the cover plate 19 and side plate 20 are connected to the frame 1 by snapping, the screen cylinder 5, cover plate 19, and side plate 20 can all be opened, facilitating equipment maintenance and cleaning.

[0044] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An anti-shaft-seizing extrusion device, characterized in that, include: A frame, on which a screw conveyor mechanism is provided; A screw conveyor mechanism, comprising a drive mechanism, an auger shaft, and screw blades, wherein the drive mechanism is connected to the auger shaft, the screw blades are mounted on the auger shaft, and the screw blades are partially cut off; A screen cylinder is coaxially sleeved outside the spiral conveying mechanism. The screen cylinder is provided with a lever, which is designed to correspond to the cut-off position of the spiral blade. The discharge port assembly is located at the discharge port at the end of the screen cylinder and is used to compress the material conveyed by the screw conveyor mechanism.

2. The anti-shaft-seizing extrusion device according to claim 1, characterized in that, The spiral blades on the auger shaft are arranged in a double-blade configuration that rotates 180°.

3. The anti-shaft-seizing extrusion device according to claim 2, characterized in that, The diameter of the auger shaft gradually increases according to the material conveying direction.

4. The anti-shaft-seizing extrusion device according to claim 3, characterized in that, The spiral blades gradually become thicker depending on the direction of material transport.

5. The anti-shaft-seizing extrusion device according to claim 4, characterized in that, The spiral blades at the very end, according to the material conveying direction, are coated with tungsten carbide.

6. An anti-shaft-seizing extrusion device according to any one of claims 1-5, characterized in that, The discharge port assembly includes a spring, a fixing member, and a pressure plate disposed at the discharge port. One end of the fixing member is connected to the auger shaft via a bearing seat, and the other end is connected to the pressure plate via a spring. The pressure plate is clearance-fitted with the auger shaft and squeezes the material conveyed by the auger shaft under the pressure of the spring.

7. The anti-shaft-seizing extrusion device according to claim 6, characterized in that, It also includes an adjusting rod disposed on the fixing member, one end of which is connected to the fixing member and its length is adjustable, and the other end of which is connected to the spring.

8. The anti-shaft-locking extrusion device according to claim 7, characterized in that, The frame is equipped with a baffle located around the discharge port.

9. The anti-shaft-seizing extrusion device according to claim 1, characterized in that, The screen cylinder has a split structure and is fixed to the rectangular plate of the frame by a flange.

10. The anti-shaft-seizing extrusion device according to claim 9, characterized in that, The cover plate and side plate on the outside of the screen cylinder are both fastened to the L-shaped plate of the frame.

Images