A solid-liquid separation device for extracting microbial proteins from sludge

Abstract

This utility model relates to the field of microbial protein extraction technology, and discloses a solid-liquid separation device for extracting microbial protein from sludge. The device includes a shell, with a rotating disk rotatably connected to the bottom of the shell. Two filter tubes are fixedly connected to the top of the rotating disk. Multiple fixing blocks are fixedly connected to the outside of the two filter tubes. Each of the multiple fixing blocks has a fixing column fixedly connected to each other in pairs. One fixing column has a fixing rod rotatably connected to its outside, and another fixing column has a threaded rod rotatably connected to its outside. In this utility model, loosening the nut allows the threaded rod to rotate, rotating the threaded rod allows the fixing rod to rotate, and rotating the fixing rod loosens the filter screen. Then, pulling the handle removes the filter screen for replacement. Repeating the operation fixes the new filter screen, thus enabling rapid filter screen replacement.

Description

Technical Field

[0001] This utility model relates to the field of microbial protein extraction technology, and in particular to a solid-liquid separation device for extracting microbial protein from sludge. Background Technology

[0002] Biological protein, also known as single-cell protein, is microbial protein synthesized by microorganisms such as yeast, bacteria, and fungi under suitable culture conditions using carbohydrates and hydrocarbons. It is rich in protein and vitamins and can be used as feed and food additives. Solid-liquid separation devices are used to separate solid and liquid components from mixtures. Through principles such as filtration, centrifugation, and sedimentation, solid particles are separated from liquids. They are widely used in chemical, environmental protection, and food industries to achieve material recovery or liquid purification.

[0003] Solid-liquid separation devices for extracting microbial proteins from sludge primarily operate on principles such as filtration, centrifugation, or sedimentation. Taking a plate and frame filter as an example, after pretreatment, the sludge enters the filter chamber. A hydraulic or mechanical device pushes a pressure plate to squeeze the liquid containing microbial proteins through the filter cloth (retaining solid impurities), achieving solid-liquid separation. Centrifugal devices use high-speed rotation to generate centrifugal force, causing denser solids to settle, and the protein solution is separated and discharged. Sedimentation devices utilize gravity to allow solids to settle naturally, and the supernatant (containing protein) is collected. The separated liquid undergoes subsequent purification to extract proteins, and the solid residue is further processed. The entire system achieves efficient separation through the action of physical force fields.

[0004] In existing technologies, some solid-liquid separation devices for extracting microbial proteins from sludge have their filter screens installed inside the filtration unit. This complex structure makes replacement relatively cumbersome, leading to prolonged downtime and frequent production interruptions for replacement, thus reducing overall extraction efficiency, especially for large-scale continuous operations. Secondly, incomplete cleaning of the filter cloth can leave sludge residue, promoting bacterial growth or causing protein contamination, affecting subsequent purification quality, and potentially even reducing protein activity due to microbial putrefaction. Furthermore, cumbersome operation increases labor costs, and repeated disassembly and reassembly can cause wear on the filter cloth edges or misalignment, resulting in sludge leakage during pressurization, contaminating the equipment and wasting materials. In addition, failure to replace aging filter cloths in a timely manner will reduce filtration accuracy, cause filtrate turbidity, decrease protein recovery rate, increase equipment operating load, shorten the lifespan of components such as plates and frames, and further increase maintenance costs. Therefore, this paper proposes a solid-liquid separation device for extracting microbial proteins from sludge to address these problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a solid-liquid separation device for extracting microbial protein from sludge, aiming to improve the problem that in some existing solid-liquid separation devices for extracting microbial protein from sludge, the filter screen is installed inside the filtration device, which has a complex structure and is relatively cumbersome to replace.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a solid-liquid separation device for extracting microbial protein from sludge, comprising a shell, a rotating disk rotatably connected to the bottom end of the shell, two filter tubes fixedly connected to the top end of the rotating disk, a plurality of fixing blocks I fixedly connected to the outside of the two filter tubes, wherein a fixing column is fixedly connected to the adjacent side of the two fixing blocks I, a fixing rod rotatably connected to the outside of one fixing column, and a threaded rod rotatably connected to the outside of the other fixing column, with a nut threadedly connected to the outside of the threaded rod, a filter screen detachably connected inside the filter tube, two fixing blocks II fixedly connected to the other end of the fixing rod, and a quantitative feeding assembly fixedly connected to the top end of the shell;

[0007] As a further description of the above technical solution: the quantitative feeding component includes a feed inlet, the feed inlet is fixedly connected to the outside of the top of the outer shell, a fixing plate is fixedly connected to the bottom of the feed inlet, an electric cylinder is fixedly connected to the bottom of the fixing plate, a sliding block is fixedly connected to the driving end of the electric cylinder, a blocking gate is fixedly connected to the top of the sliding block, and a photoelectric sensor is fixedly connected to the bottom of the fixing plate.

[0008] As a further description of the above technical solution: the inner side of the fixing rod is in contact with the outer side of the filter screen, and the outer side of the fixing rod is in contact with the inside of the filter tube;

[0009] As a further description of the above technical solution: the outside of the nut is in contact with the outside of the two fixing blocks 2, and the bottom end of the outer shell is fixedly connected to a discharge port;

[0010] As a further description of the above technical solution: a motor is fixedly connected to the bottom end of the outer shell, and the bottom end of the rotating disk is fixedly connected to the drive end of the motor;

[0011] As a further description of the above technical solution: a hydraulic pump is fixedly connected inside the top of the outer shell, and a pressure plate is fixedly connected to the bottom of the hydraulic pump;

[0012] As a further description of the above technical solution: the filter screen is fixedly connected to the outside of a handle, and the pressure plate is slidably connected to the inner wall of the filter tube.

[0013] As a further description of the above technical solution: the top end of the blocking gate is slidably connected to the bottom end of the feed inlet, and the outside of the fixing plate is fixedly connected to the inside of the outer shell.

[0014] This utility model has the following beneficial effects:

[0015] 1. In this utility model, the threaded rod can be rotated by loosening the nut, the fixed rod can be rotated by rotating the threaded rod, the filter screen can be loosened by rotating the fixed rod, and then the handle can be pulled to remove the filter screen and replace it with a new filter screen. The reverse operation is then performed to fix the new filter screen, thereby completing the quick replacement of the filter screen.

[0016] 2. In this utility model, the rotating disc is rotated to an appropriate position so that the electric cylinder drives the blocking gate to disengage from the feed inlet, allowing the slurry to enter the filter tube. The photoelectric sensor senses the height of the slurry inside the filter tube and sends a signal to the electric cylinder when a fixed amount of slurry enters, causing the electric cylinder to drive the blocking gate to block the feed inlet, thereby preventing the slurry from entering the filter tube and achieving quantitative feeding. Attached Figure Description

[0017] Figure 1 This is a three-dimensional schematic diagram of a solid-liquid separation device for extracting microbial protein from sludge according to the present invention.

[0018] Figure 2 This is a schematic diagram of the outer shell of a solid-liquid separation device for extracting microbial protein from sludge, as proposed in this utility model.

[0019] Figure 3 This is a schematic diagram of the structure of the filter tube of a solid-liquid separation device for extracting microbial protein from sludge, as proposed in this utility model.

[0020] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0021] Figure 5 This is a schematic diagram of the structure of the fixing plate of a solid-liquid separation device for extracting microbial protein from sludge, as proposed in this utility model.

[0022] Legend:

[0023] 1. Outer shell; 2. Rotating disc; 3. Filter tube; 4. Fixed column; 5. Fixed block one; 6. Fixed rod; 7. Filter screen; 8. Handle; 9. Fixed block two; 10. Threaded rod; 11. Nut; 12. Feed inlet; 13. Fixed plate; 14. Electric cylinder; 15. Sliding block; 16. Blocking gate; 17. Photoelectric sensor; 18. Discharge port; 19. Motor; 20. Hydraulic pump; 21. Pressure plate. Detailed Implementation

[0024] 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.

[0025] Reference Figures 2 to 4 This utility model provides an embodiment of a solid-liquid separation device for extracting microbial protein from sludge, comprising a shell 1, which is the supporting structure of the entire device and bears the weight of the entire device. A rotating disk 2 is rotatably connected to the bottom end of the shell 1. The rotating disk 2 is used to move the filter tube 3 to facilitate the feeding and discharging of the filter tube 3. Two filter tubes 3 are fixedly connected to the top end of the rotating disk 2. The filter tube 3 is an important part of the entire device. The sludge to be filtered will be squeezed and filtered inside the filter tube 3. Multiple fixing blocks 5 are fixedly connected to the outside of the two filter tubes 3. The fixing blocks 5 are used to fix the fixing column 4 to facilitate the rotation of the fixing rod 6.

[0026] Two fixing blocks 5 are fixedly connected to a fixing post 4 on their adjacent sides. The fixing post 4 provides a rotation center for the fixing rod 6, facilitating the fixing rod 6 to fix the filter screen 7. The fixing rod 6 is rotatably connected to the outside of one fixing post 4. The fixing rod 6 is used to fix the filter screen 7 and facilitates the disassembly of the filter screen 7. The other fixing post 4 is rotatably connected to a threaded rod 10. The threaded rod 10 is connected to a nut 11. The threaded rod 10 and the nut 11 can fix and tighten the fixing rod 6 to achieve a sealing effect. The filter screen 7 is detachably connected inside the filter tube 3. The filter screen 7 is an important part of the entire device and is the basis for filtration. Two fixing blocks 9 are fixedly connected to the other end of the fixing rod 6. The fixing blocks 9 are used to fix the fixing rod 6 and facilitate the fixing rod 6 to be fixed by the threaded rod 10 and the nut 11. A metering feed component is fixedly connected inside the top of the outer shell 1. The metering feed component ensures that the amount of mud entering the filter tube 3 is the same each time, preventing excessive mud from making it inconvenient to squeeze and filter.

[0027] The inner side of the fixing rod 6 contacts the outer side of the filter screen 7, and the outer side of the fixing rod 6 contacts the inner side of the filter tube 3. This structure facilitates the fixing rod 6 to fix the filter screen 7. The outer side of the nut 11 contacts the outer side of the two fixing blocks 9, which facilitates the nut 11 to cooperate with the threaded rod 10 to fix the fixing rod 6. The bottom end of the outer shell 1 is fixedly connected to the discharge port 18, which is used for discharging. The filtered microbial protein flows out from the discharge port 18. The bottom end of the outer shell 1 is fixedly connected to the motor 19, and the bottom end of the rotating disk 2 is fixedly connected to the drive end of the motor 19. The motor 19 drives the rotating disk 2 to rotate. The top end of the outer shell 1 is fixedly connected to the hydraulic pump 20, which provides sufficient pressure to ensure that the mud can be filtered thoroughly. The bottom end of the hydraulic pump 20 is fixedly connected to the pressure plate 21, which is used to transmit pressure. The pressure provided by the hydraulic pump 20 is transmitted to the pressure plate 21. The outer side of the filter screen 7 is fixedly connected to the handle 8, which is convenient for gripping. The outer side of the pressure plate 21 is slidably connected to the inner wall of the filter tube 3.

[0028] Reference Figure 1 , Figure 2 and Figure 5 The quantitative feeding assembly includes a feed inlet 12, which is externally and fixedly connected to the inside of the top of the outer casing 1. The feed inlet 12 is used for feeding slurry into the filter tube 3 for solid-liquid separation. A fixing plate 13 is fixedly connected to the bottom of the feed inlet 12. The fixing plate 13 is the supporting structure of the entire quantitative feeding assembly, providing support for the entire assembly. An electric cylinder 14 is fixedly connected to the bottom of the fixing plate 13. A sliding block 15 is fixedly connected to the drive end of the electric cylinder 14. A material blocking gate 16 is fixedly connected to the top of the 15. The electric cylinder 14 drives the sliding block 15 to move, and the sliding block 15 drives the material blocking gate 16 to move, thereby realizing quantitative feeding. A photoelectric sensor 17 is fixedly connected to the bottom of the fixed plate 13. The photoelectric sensor 17 is the key to quantitative feeding. The height of the mud inside the filter tube 3 is judged by the photoelectric sensor 17, thereby controlling the amount of mud. The top of the material blocking gate 16 is slidably connected to the bottom of the feed inlet 12. The outside of the fixed plate 13 is fixedly connected to the inside of the outer shell 1.

[0029] Working principle: When filter screen 7 needs to be replaced, loosen nut 11 to disengage it from fixing block 2 9. The disengagement of nut 11 allows threaded rod 10 to rotate. Rotating threaded rod 10 disengages it from fixing block 2 9, allowing fixing rod 6 to rotate. Rotating fixing rod 6 disengages it from filter tube 3, loosening filter screen 7. Hold handle 8 to remove filter screen 7 and replace it with a new filter screen 7. The process is reversed to complete the fixing of the new filter screen 7, thus realizing the replacement of filter screen 7.

[0030] When one of the empty filter tubes 3 rotates to below the feed inlet 12, the drive end of the electric cylinder 14 retracts, causing the sliding block 15 to disengage from the feed inlet 12. The movement of the sliding block 15 causes the blocking gate 16 to disengage from the feed inlet 12, allowing the treated slurry to flow into the interior of the filter tube 3 through the feed inlet 12. When the slurry inside the filter tube 3 rises to a certain height, the photoelectric sensor 17 transmits a signal to the electric cylinder 14. At this time, the drive end of the electric cylinder 14 extends, causing the sliding block 15 to press tightly against the feed inlet 12. The movement of the sliding block 15 causes the blocking gate 16 to block the feed inlet 12, stopping the slurry from being fed, thereby achieving quantitative feeding.

[0031] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A solid-liquid separation device for extracting microbial protein from sludge, comprising a shell (1), characterized in that: The bottom end of the outer shell (1) is rotatably connected to a rotating disk (2). The top end of the rotating disk (2) is fixedly connected to two filter tubes (3). The two filter tubes (3) are fixedly connected to a plurality of fixing blocks (5). The two fixing blocks (5) are fixedly connected to a fixing post (4) on their adjacent sides. The fixing post (4) is rotatably connected to a fixing rod (6). The fixing post (4) is rotatably connected to a threaded rod (10). The threaded rod (10) is threadedly connected to a nut (11). The filter tube (3) is detachably connected to a filter screen (7). The other end of the fixing rod (6) is fixedly connected to two fixing blocks (9). The top end of the outer shell (1) is fixedly connected to a quantitative feeding assembly.

2. The solid-liquid separation device for extracting microbial protein from sludge according to claim 1, characterized in that: The quantitative feeding assembly includes a feed inlet (12), which is fixedly connected to the outside of the top of the outer shell (1). A fixing plate (13) is fixedly connected to the bottom of the feed inlet (12). An electric cylinder (14) is fixedly connected to the bottom of the fixing plate (13). A sliding block (15) is fixedly connected to the drive end of the electric cylinder (14). A blocking gate (16) is fixedly connected to the top of the sliding block (15). A photoelectric sensor (17) is fixedly connected to the bottom of the fixing plate (13).

3. The solid-liquid separation device for extracting microbial protein from sludge according to claim 1, characterized in that: The inner side of the fixing rod (6) is in contact with the outer side of the filter screen (7), and the outer side of the fixing rod (6) is in contact with the inner side of the filter tube (3).

4. The solid-liquid separation device for extracting microbial protein from sludge according to claim 1, characterized in that: The outside of the nut (11) is in contact with the outside of the two fixing blocks (9), and the bottom end of the outer shell (1) is fixedly connected to the discharge port (18).

5. The solid-liquid separation device for extracting microbial protein from sludge according to claim 1, characterized in that: The bottom end of the outer shell (1) is fixedly connected to a motor (19), and the bottom end of the rotating disk (2) is fixedly connected to the drive end of the motor (19).

6. The solid-liquid separation device for extracting microbial protein from sludge according to claim 1, characterized in that: A hydraulic pump (20) is fixedly connected inside the top of the outer shell (1), and a pressure plate (21) is fixedly connected to the bottom of the hydraulic pump (20).

7. A solid-liquid separation device for extracting microbial protein from sludge according to claim 6, characterized in that: The filter screen (7) is fixedly connected to the outside of a handle (8), and the pressure plate (21) is slidably connected to the inside wall of the filter tube (3).

8. A solid-liquid separation device for extracting microbial protein from sludge according to claim 2, characterized in that: The top of the blocking gate (16) is slidably connected to the bottom of the feed inlet (12), and the outside of the fixing plate (13) is fixedly connected to the inside of the outer shell (1).

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