A slurry de-sludging machine

Abstract

This utility model relates to the field of separation technology, specifically to a slurry deslagging machine, including a casing. The inner cavity of the casing is divided into a slag discharge chamber and a filtration chamber along a first direction. A horizontally placed filter cylinder is installed in the filtration chamber, and the outer wall of the filter cylinder has filter holes. A screw conveying mechanism is installed inside the filter cylinder, and the rotation axis of the screw conveying mechanism is coaxial with that of the filter cylinder. The screw conveying mechanism is driven by a first power mechanism. One end of the filter cylinder along its own axial direction forms a feed inlet, and the other end forms a discharge outlet. The feed inlet connects to the feed bin outside the casing, and the discharge outlet connects to the slag discharge chamber. The lower end of the filtration chamber has a slurry outlet, and the lower end of the slag discharge chamber has a slag discharge outlet. The filter cylinder is rotatably connected to the casing, and the filter cylinder can rotate and be positioned around its own central axis under the drive of a second power mechanism. This utility model facilitates the cleaning of flocculent material accumulated at the top of the deslagging machine.

Description

Technical Field

[0001] This utility model relates to the field of separation and processing technology, and in particular to a slurry slag removal machine. Background Technology

[0002] After being crushed by a high-speed crushing device, kitchen waste will form a slurry mainly composed of liquid mixed with various solid waste residues (such as bone fragments, plastic scraps, and fibrous flocs). This slurry needs to undergo a slag removal process to separate out the pure liquid before it can enter subsequent fermentation, purification and other resource utilization processes.

[0003] Currently, the most commonly used slurry deslagging equipment in the industry is the horizontal filter cartridge deslagging machine. Its core structure usually includes a casing, a horizontal filter cartridge, a screw conveyor mechanism, and a power component. The screw conveyor mechanism is coaxially installed inside the filter cartridge. During operation, the high-speed rotation of the screw conveyor mechanism (usually 1000-2000 rpm) transports the slurry along the axial direction of the filter cartridge. At the same time, centrifugal force is used to throw the slurry out of the filter cartridge through the filter holes, and then it falls and is discharged from the slurry outlet. The solid waste is blocked by the filter cartridge and pushed to the slag discharge port by the screw conveyor mechanism, thus achieving the separation of slurry and waste.

[0004] However, in the above-mentioned technical solution, some slurry will flow out from the top of the filter cylinder under centrifugal force. This portion of slurry will fall back to the outer wall of the top of the filter cylinder under gravity, and it is easily blocked by the hoop rings on the outside of the screen cylinder and the connecting plates along the horizontal direction. At this time, fibrous flocs and fine sticky impurities contained in the slurry are easily adsorbed on the filter pores and surface of the filter cylinder, and cannot fall down the cylinder wall, resulting in filter pore blockage and thus reducing the slag removal efficiency. Utility Model Content

[0005] This utility model provides a slurry deslagging machine, which can solve at least one of the above-mentioned technical problems.

[0006] To solve the above-mentioned technical problems, one or more embodiments of this utility model provide a slurry deslagging machine, including a casing. The inner cavity of the casing is divided into a slag discharge chamber and a filtration chamber along a first direction. A horizontally placed filter cylinder is provided in the filtration chamber. The outer wall of the filter cylinder has filter holes. A screw conveying mechanism is installed inside the filter cylinder. The rotation axis of the screw conveying mechanism is coaxial with the filter cylinder. The screw conveying mechanism is driven by a first power mechanism. One end of the filter cylinder along its own axial direction forms a feed inlet, and the other end forms a discharge outlet. The feed inlet is connected to the feed bin outside the casing, and the discharge outlet is connected to the slag discharge chamber. The lower end of the filtration chamber has a slurry outlet, and the lower end of the slag discharge chamber has a slag discharge outlet. The filter cylinder is rotatably connected to the casing, and the filter cylinder can rotate and be positioned around its own central axis under the drive of a second power mechanism.

[0007] The beneficial effects of one or more of the above technical solutions are as follows:

[0008] In this design, the filter cartridge is rotatably connected to the housing and can be driven by a second power mechanism to rotate and position itself around its central axis. This allows for alternating switching between the upper and lower ends of the filter cartridge's outer wall surface. When a portion of the filter cartridge accumulates fibrous flocs, fine sticky impurities, or other substances that clog the filter pores at the upper end, the second power mechanism can drive the filter cartridge to rotate, moving that portion to the lower end. The impact force of the subsequent slurry, thrown out under centrifugal force, cleans the impurities accumulated on the filter cartridge surface, ensuring that the accumulated contaminants are largely dislodged by the impact of the subsequent slurry. This effectively reduces the probability of filter pore clogging, minimizes manual cleaning, and extends the filter cartridge's service life.

[0009] In this scheme, the filter cartridge is horizontally positioned and coaxially coordinated with the screw conveyor mechanism. Driven by the first power mechanism, the screw conveyor mechanism can stably transport the slurry input from the feed hopper along the axial direction of the filter cartridge, and can also generate centrifugal force through rotation to cause the slurry in the slurry to be quickly separated into the filtration chamber through the filter holes on the outer wall of the filter cartridge and then discharged from the slurry outlet. At the same time, the waste residue is accurately pushed to the filter cartridge outlet and enters the slag discharge chamber, and finally discharged from the slag discharge outlet. The automated slag removal operation can be completed without manual intervention. Attached Figure Description

[0010] Figure 1 This is an isometric view of the overall structure in an embodiment of this utility model;

[0011] Figure 2 This is an axial side view of the embodiment of the present invention after part of the housing has been removed;

[0012] Figure 3 This is a front view schematic diagram of the filter cartridge exposed after part of the housing has been removed in an embodiment of this utility model;

[0013] Figure 4 Figure 3 Enlarged structural diagram of section A;

[0014] Figure 5 This is a cross-sectional view in the main view direction of an embodiment of this utility model.

[0015] Reference numerals: 1. Support leg; 2. Frame; 3. First support; 4. Housing; 5. Side plate; 6. Feed pipe; 7. Power motor; 8. Belt drive mechanism; 9. Second support; 10. Feed hopper; 11. Drive motor; 12. Slag discharge chamber; 13. Baffle plate; 14. Water spray assembly; 15. Filter chamber; 16. Filter cartridge; 17. Connecting branch pipe; 18. Slurry hopper; 19. Drive shaft; 20. Slurry outlet; 21. Spiral blade; 22. External gear ring; 23. Gear; 24. Hoop ring. Detailed Implementation

[0016] To clearly illustrate the technical features of this solution, the present invention will be described in detail below through specific embodiments and in conjunction with the accompanying drawings.

[0017] See Figures 1-5 A typical embodiment of this utility model provides a slurry slag removal machine, mainly used for solid-liquid separation of slurry after crushing kitchen waste. It can separate solid waste residues such as bone fragments, plastic debris, and fibrous flocs from the slurry, providing a foundation for subsequent slurry fermentation, purification, and other processes. The slurry slag removal machine includes a casing 4, which is made of stainless steel and has a roughly rectangular structure. The inner cavity is divided into a slag discharge chamber 12 and a filter chamber 15 along a first direction (left-right direction in this embodiment) by a vertically arranged partition 13. The partition 13 is welded and fixed to the inner wall of the casing 4 to ensure a sealed isolation between the slag discharge chamber 12 and the filter chamber 15, preventing the slurry and waste residue from mixing and affecting the slag removal effect.

[0018] A horizontally positioned filter cylinder 16 is installed inside the filter chamber 15. The outer wall of the filter cylinder 16 has filter holes, the diameter of which is set according to the actual slag removal requirements. A screw conveyor mechanism is installed inside the filter cylinder 16. The rotation axis of the screw conveyor mechanism is coaxial with that of the filter cylinder 16 to ensure that the screw conveyor mechanism does not rub against the inner wall of the filter cylinder 16 when it rotates. The screw conveyor mechanism is driven by a first power mechanism to realize the axial conveying and centrifugal separation of the slurry.

[0019] The filter cartridge 16 has a feed inlet at one end (right end) along its axial direction, facilitating the smooth entry of slurry into the filter cartridge 16. The other end (left end) forms a discharge outlet, which connects to the slag discharge chamber 12 and is equipped with a sealing gasket. The feed inlet connects to the feed hopper 10 outside the casing 4, and the discharge outlet connects to the slag discharge chamber 12. The lower end of the filter chamber 15 has a slurry outlet 20, and the lower end of the slag discharge chamber 12 has a slag discharge outlet. Specifically, the lower part of the filter chamber 15 forms a gradually decreasing slurry hopper 18 with an inverted conical structure for easy slurry collection. The slurry outlet 20 is located at the bottom of the slurry hopper 18, and a pipe can be connected to the outlet 20 to transport the separated pure slurry to subsequent processing equipment. The lower end of the slag discharge chamber 12 also adopts an inverted conical structure, with the slag discharge outlet located at its bottom. A valve can be installed at the slag discharge outlet to control the discharge time and volume of waste residue.

[0020] The filter cartridge 16 is rotatably connected to the housing 4. Mounting holes for inserting the filter cartridge are provided on the partition plate 13 and the side plate 5 of the housing 4, respectively. These two mounting holes penetrate the partition plate 13 and the side plate 5. Specifically, both ends of the filter cartridge 16 are rotatably connected to the partition plate 13 or the side plate 5 via rolling bearings. The rolling bearings are sealed to prevent slurry from entering the bearings. Driven by the second power mechanism, the filter cartridge 16 can rotate and position itself around its central axis. The rotation speed and rotation time interval can be adjusted according to the filter hole blockage. The positioning function can be achieved through the braking component of the second power mechanism (such as a brake), ensuring that the filter cartridge 16 can stably remain at a specified angle for easy subsequent maintenance or cleaning.

[0021] In this embodiment, the filter cartridge 16 includes multiple elongated grid plates evenly arranged along its own axial direction. The grid plates are made of stainless steel sheet with a thickness of 3-5 mm. The grid plates extend along the axial direction of the filter cartridge 16, and the gap between two adjacent grid plates forms the filter holes of the filter cartridge 16. The number of grid plates is set according to the diameter of the filter cartridge 16. Multiple hoop rings 24 are fixedly fitted on the outer surface of the filter cartridge 16. The hoop rings 24 are made of circular stainless steel structure and are fixed to the grid plates by welding. There are 3-5 hoop rings 24, which are evenly distributed along the axial direction of the filter cartridge 16 to fasten the multiple grid plates into a whole, prevent the filter cartridge 16 from deforming during rotation and operation, and enhance the load-bearing capacity of the filter cartridge 16. More specifically, multiple connecting plates are fixed on the outside of the hoop rings. The multiple connecting plates are evenly distributed along the circumference of the hoop rings 24 and are used to connect the multiple hoop rings 24 into a whole.

[0022] In this embodiment, two water spray assemblies 14 are provided in the inner cavity of the housing 4. The water spray assemblies 14 are located on both sides of the filter cartridge 16 along the second direction, which is horizontal and perpendicular to the central axis of the filter cartridge 16 (i.e., Figure 3 Two water spray components 14 are symmetrically arranged (vertically perpendicular to the front and back of the paper surface) to ensure that both the front and back sides of the filter cartridge 16 are evenly rinsed. The function of the water spray components 14 is to rinse the outer wall of the filter cartridge 16, further clean the clogging impurities in the filter holes, especially impurities such as fibrous flocs that are difficult to remove by centrifugal force, thereby improving the filtration efficiency of the filter cartridge 16 and extending the cleaning cycle.

[0023] In this embodiment, the water spray assembly 14 includes two water spray pipes arranged vertically, parallel to each other and parallel to the axial direction of the filter cartridge 16. The two water spray pipes are connected by a vertically arranged connecting branch pipe 17. The water spray pipes extend along the axial direction of the filter cartridge 16, and their length is close to the length of the filter cartridge 16. At least one water spray pipe in the water spray assembly 14 is connected to an external water source. In this embodiment, it is preferable that the lower water spray pipe is connected to an external high-pressure water source. The high-pressure water flow is diverted to the upper water spray pipe through the connecting branch pipe 17, so that the upper and lower water spray pipes spray water simultaneously.

[0024] In this embodiment, the spray pipe is provided with multiple nozzles (not shown in the figure) arranged sequentially along the axial direction of the filter cartridge 16. The number of nozzles is set according to the length of the spray pipe, usually 6-10 nozzles per meter of spray pipe, and the nozzles are evenly distributed. The spray direction of the nozzles is along the radial direction of the filter cartridge 16, that is, the nozzles face the outer wall of the filter cartridge 16, so that the water flow can vertically impact the surface and filter holes of the filter cartridge 16, resulting in a better cleaning effect.

[0025] In this embodiment, the housing 4 is supported by the frame 2, which is made of welded steel. The lower end of the frame 2 has four legs 1, located at the four corners of the frame 2. The screw conveying mechanism includes a drive shaft 19 and helical blades 21 fixedly sleeved on the outside of the drive shaft 19. The drive shaft 19 is made of alloy steel, and the helical blades 21 are made of stainless steel and are fixed to the drive shaft 19 by welding. The pitch of the helical blades 21 can be adjusted according to the required conveying speed of the slurry; a larger pitch results in a faster conveying speed. Both ends of the drive shaft 19 extend out of the housing 4 and are connected to supports via bearings. The supports include a first support 3 and a second support 9, fixed to the left and right sides of the frame 2 respectively. The bearings are sealed to prevent slurry and dust from entering the bearing interior.

[0026] In this embodiment, a first power assembly is installed on the frame 2. The first power assembly includes a power motor 7 and a pulley transmission mechanism 8. The power motor 7 is a variable frequency motor. The pulley transmission mechanism 8 includes a driving pulley, a driven pulley, and a transmission belt. The driving pulley is fixed on the output shaft of the power motor 7, and the driven pulley is fixed on the right end of the drive shaft 19 that extends out of the feed hopper 10. The transmission belt is sleeved on the driving pulley and the driven pulley. The power of the power motor 7 is transmitted to the drive shaft 19 through the pulley transmission mechanism 8, driving the screw conveyor mechanism to rotate. Alternatively, a gear transmission mechanism can be used instead of the pulley transmission mechanism 8 according to actual needs.

[0027] In this embodiment, the second power mechanism includes an external gear ring 22 fixedly sleeved on one end (right end) of the filter cartridge 16. The external gear ring 22 is fixed to the end of the filter cartridge 16 by bolts and is coaxially arranged with the filter cartridge 16. The number of teeth of the external gear ring 22 is set according to the diameter and rotation speed of the filter cartridge 16. The external gear ring 22 meshes with a gear 23, which is driven by a drive motor 11. The drive motor 11 is a stepper motor, which realizes the precise rotation and positioning of the filter cartridge 16. The body of the drive motor 11 is fixed to the side plate 5 of the housing 4, and its output shaft is fixedly connected to the gear 23. During operation, the drive motor 11 drives the gear 23 to rotate, the gear 23 drives the external gear ring 22 to rotate, and thus drives the filter cartridge 16 to rotate around its own central axis, which can meet the rotation and positioning requirements of the filter cartridge 16.

[0028] In this embodiment, the feed hopper 10 is a horizontally placed cylindrical structure made of stainless steel. Its diameter is slightly larger than the inlet diameter of the filter cartridge 16 to ensure that the slurry can smoothly enter the filter cartridge 16. One end (left end) of the feed hopper 10 along the axis is connected to the inlet via a flange, and a sealing gasket is provided at the connection. The other end (right end) is sealed by an end plate, which is welded to the feed hopper 10. The upper part of the feed hopper 10 is connected to a feed pipe 6 through an opening. The feed pipe 6 is vertically arranged to facilitate the gravity flow of slurry into the feed hopper 10. The diameter of the feed pipe is set according to the slurry processing volume. The feed pipe 6 is welded to the opening to ensure a firm connection.

[0029] In this embodiment, the vertical projection of the opening does not overlap with the vertical projection of the drive shaft 19 in the screw conveyor mechanism. Specifically, the opening is set on one side of the upper part of the feed hopper 10, offset from directly above the drive shaft 19. The purpose of this setting is to prevent the slurry from directly hitting the drive shaft 19 after entering the feed hopper 10 through the opening, causing the slurry to splash. At the same time, it ensures that the slurry can fall evenly on the spiral blades 21 inside the filter cartridge 16, so that the screw conveyor mechanism can smoothly convey the slurry.

[0030] Working principle: Before starting the equipment, check the connections of each component to ensure that the screw conveyor mechanism, filter cartridge 16, water spray assembly 14, and other components are operating normally, and check the sealing of the seals. At the same time, connect the external water source to the water spray assembly 14, and connect the slurry outlet 20 and the slag discharge outlet to the subsequent pipelines respectively. After starting the equipment, the power motor 7 of the first power mechanism drives the drive shaft 19 to rotate through the pulley transmission mechanism 8, which in turn drives the screw blades 21 to rotate.

[0031] Subsequently, the slurry from the crushed kitchen waste enters the feed hopper 10 through the feed pipe. After being buffered by the feed hopper 10, it enters the filter cylinder 16 through the feed inlet. Under the rotation of the spiral blades 21, the slurry is conveyed from right to left along the axial direction of the filter cylinder 16. At the same time, the centrifugal force generated by the rotation of the spiral blades 21 causes the slurry in the slurry to be thrown out through the filter holes on the outer wall of the filter cylinder 16 into the filter chamber 15. The slurry gathers in the filter chamber 15 and flows into the discharge hopper 18, and then is discharged from the discharge port 20 to the subsequent processing equipment. The solid waste residue in the slurry is blocked by the filter cylinder 16 and, with the conveying action of the spiral blades 21, enters the slag discharge chamber 12 from the discharge port of the filter cylinder 16. After gathering in the slag discharge chamber 12, it is discharged from the slag discharge port, completing the solid-liquid separation of the slurry.

[0032] After the equipment has been in operation for a set time (e.g., 5-10 minutes), the filter cartridge 16 rotates once (i.e., rotates 180 degrees). When a part of the filter cartridge 16 rotates to the upper end, fibrous flocs and fine sticky impurities contained in the slurry that is thrown off will be adsorbed onto the filter pores and surface of that part. When that part rotates to the lower end with the filter cartridge 16, the impact force of the subsequent slurry falling off will impact that part. On the other hand, when the part of the filter cartridge 16 with accumulated flocs rotates to the lower end or away from the lower end of the filter cartridge, the high-pressure water flow of the water spray assembly 14 will be intermittently turned on to rinse the filter cartridge, remove the adsorbed impurities, and the cleaned impurities will fall into the filter chamber 15 or the slag discharge chamber 12 with the water flow or their own gravity, and finally be discharged with the slurry or waste residue, reducing the probability of filter pore clogging.

[0033] If the filter holes are slightly clogged, the time interval of the filter cartridge 16 rotation can be reduced or the water spray pressure increased to enhance the cleaning effect. If severe clogging occurs, the slurry delivery can be suspended, and only the water spray assembly 14 and the filter cartridge 16 can be turned on to thoroughly flush the filter cartridge 16. This eliminates the need to stop the machine for disassembly and cleaning, thus improving the equipment's working efficiency.

[0034] The above specific embodiments should not be construed as limiting the scope of protection of this utility model. For those skilled in the art, any alternative improvements or modifications made to the embodiments of this utility model shall fall within the scope of protection of this utility model.

[0035] Any aspects of this utility model not described in detail are known to those skilled in the art.

Claims

1. A slurry slag removal machine, characterized in that, The device includes a housing, the inner cavity of which is divided into a slag discharge chamber and a filtration chamber along a first direction. A horizontally placed filter cylinder is installed in the filtration chamber, and the outer wall of the filter cylinder has filter holes. A screw conveying mechanism is installed inside the filter cylinder, the rotation axis of which is coaxial with the filter cylinder. The screw conveying mechanism is driven by a first power mechanism. One end of the filter cylinder along its own axial direction forms a feed inlet, and the other end forms a discharge outlet. The feed inlet connects to a feed hopper outside the housing, and the discharge outlet connects to the slag discharge chamber. A slurry outlet is provided at the lower end of the filtration chamber, and a slag discharge outlet is provided at the lower end of the slag discharge chamber. The filter cartridge is rotatably connected to the housing, and can rotate and be positioned around its central axis under the drive of the second power mechanism.

2. The slurry deslagging machine according to claim 1, characterized in that, The filter cartridge includes a plurality of elongated grid plates evenly arranged along its own axial direction. The grid plates extend along the axis of the filter cartridge, and a plurality of hoop rings are fitted on the outer surface of the filter cartridge, with the hoop rings fixed to the grid plates.

3. The slurry deslagging machine according to claim 1, characterized in that, The inner cavity of the housing is provided with two water spraying components, which are located on both sides of the filter cartridge along a second direction, which is horizontal and perpendicular to the central axis of the filter cartridge.

4. The slurry deslagging machine according to claim 3, characterized in that, The water spray assembly includes two water spray pipes arranged vertically and connected to each other. The water spray pipes extend along the axial direction of the filter cartridge, and at least one water spray pipe in the water spray assembly is connected to an external water source.

5. The slurry deslagging machine according to claim 4, characterized in that, The water spray pipe is provided with a plurality of nozzles arranged sequentially along the axial direction of the filter cartridge, and the spray direction of the nozzles is along the radial direction of the filter cartridge.

6. The slurry deslagging machine according to claim 1, characterized in that, The housing is supported by a frame. The screw conveying mechanism includes a drive shaft and screw blades fixedly sleeved outside the drive shaft. The two ends of the drive shaft pass through the housing and are connected to the support through bearings.

7. The slurry deslagging machine according to claim 6, characterized in that, The first power assembly is mounted on the frame, and the first power assembly includes a power motor and a pulley transmission mechanism.

8. The slurry deslagging machine according to claim 7, characterized in that, The second power mechanism includes an external gear ring fixedly sleeved on one end of the filter cartridge. The external gear ring meshes with a gear, which is driven by a drive motor. The body of the drive motor is fixed to the outside of the housing.

9. The slurry deslagging machine according to claim 1, characterized in that, The feeding hopper is a horizontally placed cylindrical structure. One end of the feeding hopper along the axial direction is connected to the feeding port, and the other end is sealed by an end plate. The upper part of the feeding hopper is connected to a feeding pipe through an opening.

10. The slurry deslagging machine according to claim 9, characterized in that, The vertical projection of the opening does not overlap with the vertical projection of the drive shaft in the screw conveyor mechanism.

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