Feeding device for low-temperature drying of sludge

Abstract

The utility model relates to the technical field of sludge treatment, and discloses a feeding device for sludge low-temperature drying, which comprises a bottom plate, an outer box is arranged at the top of the bottom plate, a first support plate is fixedly connected to the right end of the outer box, and a first motor is arranged in the first support plate; the left side wall of the outer box and the interior of the first supporting plate are in threaded connection with fixers, and the bottom wall of the first supporting plate is fixedly connected with a hinge frame. Through the arrangement of the outer box, the first motor, the first connecting ring, the screw rod and the discharging box, the problems that due to the fact that drying is not sufficient, feeding is too little in part of time periods, and even shutdown cleaning is needed, the maintenance cost is increased, and the shutdown time is prolonged can be solved; therefore, the conveying amount of the sludge is adjusted according to actual production requirements, stable operation of the whole drying process is effectively ensured, and the phenomenon of blockage at an outlet of the stock bin or a conveying pipeline is avoided.

Description

Technical Field

[0001] This utility model relates to the field of sludge treatment technology, and in particular to a feeding device for low-temperature sludge drying. Background Technology

[0002] Low-temperature sludge drying is a method of drying sludge using low-temperature technology. Its aim is to reduce the moisture content of the sludge, facilitating its transportation, disposal, and resource utilization. Low-temperature sludge drying typically employs conductive or convective heating methods, evaporating moisture from the sludge through heat exchange at relatively low temperatures (generally below 100℃, with a common temperature range of 40-80℃). Compared to traditional high-temperature drying, low-temperature drying avoids changes in the properties of the sludge at high temperatures, reducing odor generation and energy consumption.

[0003] During sludge feeding, the sludge may accumulate at the bottom of the hopper. Due to the lack of support, the sludge cannot move synchronously with the conveyor belt, resulting in an unstable amount of sludge entering the drying equipment. This affects the consistency of the drying effect, leading to insufficient drying. Insufficient feed at certain times results in energy waste, disrupts normal feeding operations, and may even require shutdown for cleaning, increasing maintenance costs and downtime. Because of sludge sedimentation and clumping, the feed rate to the drying equipment can fluctuate. Lumpy sludge may intermittently block the feed inlet, causing feeding interruptions. However, when the lumps are forcibly squeezed out or broken, a larger feed rate may occur again. This results in uneven sludge distribution within the drying equipment, affecting the consistency of the drying effect. Utility Model Content

[0004] The main purpose of this utility model is to provide a feeding device for low-temperature sludge drying, which can effectively solve the problems of insufficient drying, insufficient feeding at certain times, energy waste, and disruption of normal feeding, which may even require shutdown for cleaning, increasing maintenance costs and downtime and causing feeding interruptions. When lumps are forcibly squeezed out or broken, there will be a large feeding volume, which will cause uneven distribution of sludge in the drying equipment and affect the consistency of drying effect.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a sludge low-temperature drying feeding device, comprising a base plate, an outer box on the top of the base plate, a first support plate fixedly connected to the right end of the outer box, a first motor disposed inside the first support plate, a retainer threadedly connected to the left side wall of the outer box and the inside of the first support plate, a hinge frame fixedly connected to the bottom wall of the first support plate, a support rod rotatably connected to the bottom wall of the hinge frame, the front and rear ends of the support rod rotatably connected to the inside right side of the base plate, a rotating shaft fixedly connected to the output end of the first motor, a first connecting ring threadedly connected to the left end of the rotating shaft, a connecting rod threadedly connected to the left side wall of the first connecting ring, and the left and right ends of the connecting rod rotatably connected to the inside of two retainers.

[0006] Furthermore, a helical rod is fixedly connected to the outer side of the connecting rod, and the helical rod is rotatably connected to the inside of the outer box. Support rods are fixedly connected to the top left side of the bottom plate, and the front and rear sides of the left end of the outer box are rotatably connected to the top of the support rods.

[0007] Furthermore, a discharge box is connected through the bottom left end of the outer box, a guide box is fixedly connected to the bottom wall of the discharge box, and casters are fixedly connected to the bottom left and right sides of the bottom plate.

[0008] Furthermore, a feeding box is connected through the top right side of the base plate, and a storage box is connected through the top of the feeding box. A feeding pipe is connected through the top rear side of the storage box, and a second motor is installed on the top of the storage box.

[0009] Furthermore, a rotating rod is fixedly connected to the output end of the second motor, a second support plate is fixedly connected inside the feed box, a sleeve is fixedly connected to the top of the second support plate, and the bottom end of the rotating rod is rotatably connected inside the sleeve.

[0010] Furthermore, a second connecting ring is fixedly connected to the outer side of the middle part of the rotating rod, a stirring rod is fixedly connected to the outer side of the four second connecting rings, and a fixing ring is fixedly connected to the outer side of the bottom end of the rotating rod.

[0011] Furthermore, each of the four fixed rings is fixedly connected to a connecting plate on its outer side, and each of the four connecting plates is fixedly connected to a scraper on its bottom. The bottom walls of the four scrapers are correspondingly arranged with the bottom walls of the inner wall of the storage box.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. This utility model, through its outer casing, first motor, first connecting ring, screw rod, and discharge box, solves the problems of insufficient drying, insufficient feeding at certain times, energy waste, disruption of normal feeding, and even the need for shutdown for cleaning, increasing maintenance costs and downtime. The screw rod, fixedly connected to the outside of the connecting rod, rotates inside the outer casing as the connecting rod rotates. When sludge is placed inside the outer casing, the rotating screw rod, using its helical structure, pushes the sludge from the right side to the left side of the outer casing. During this process, the screw pitch and rotation speed determine the sludge conveying speed and volume. Operators can control the screw rod's rotation speed by adjusting the speed of the first motor, thereby adjusting the sludge conveying volume according to actual production needs. This effectively ensures the stable operation of the entire drying process and avoids blockages at the silo outlet or conveying pipeline.

[0014] 2. The design incorporates a storage tank, a second motor, a second connecting ring, a stirring rod, scrapers, and a second support plate. This addresses the issue of feed interruptions followed by a large feed volume after the lumps are forcibly squeezed out or broken, leading to uneven sludge distribution within the drying equipment and affecting the consistency of the drying effect. The connecting plate on the outside of the fixed ring and the scrapers fixed at the bottom scrape the bottom wall of the storage tank during rotation. The four scrapers, with their corresponding bottom walls, effectively remove sludge adhering to the bottom, preventing sludge residue and ensuring smooth discharge from the bottom of the storage tank. This also helps maintain the uniformity of sludge mixing, preventing sludge accumulation at the bottom from affecting the overall mixing effect. This effectively ensures the continuity and stability of the feeding process, providing a stable feed for the drying equipment and reducing maintenance costs and replacement frequency.

[0015] The parts of the device not covered herein are the same as or can be implemented using existing technologies. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the sludge low-temperature drying feeding device proposed in this utility model;

[0017] Figure 2 This is an internal cross-sectional view of the sludge low-temperature drying feeding device proposed in this utility model;

[0018] Figure 3 This is a structural diagram of the screw rod of the sludge low-temperature drying feeding device proposed in this utility model;

[0019] Figure 4 This is a structural diagram of the rotating shaft of the sludge low-temperature drying feeding device proposed in this utility model;

[0020] Figure 5This is a structural diagram of the stirring rod of the feeding device for low-temperature drying of sludge proposed in this utility model;

[0021] Figure 6 This is a structural diagram of the second support plate of the sludge low-temperature drying feeding device proposed in this utility model;

[0022] Figure 7 This is a schematic diagram of the scraper of the feeding device for low-temperature sludge drying proposed in this utility model.

[0023] Legend:

[0024] 1. Base plate; 2. Outer casing; 3. First support plate; 4. Fixer; 5. First motor; 6. Hinge frame; 7. Support rod; 8. Rotating shaft; 9. First connecting ring; 10. Connecting rod; 11. Helical rod; 12. Support rod; 13. Discharge box; 14. Guide box; 15. Caster wheel; 16. Feed box; 17. Storage box; 18. Feed pipe; 19. Second motor; 20. Sleeve; 21. Rotating rod; 22. Second connecting ring; 23. Stirring rod; 24. Fixing ring; 25. Connecting plate; 26. Scraper; 27. Second support plate. Detailed Implementation

[0025] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0026] like Figure 1 - Figure 4 The sludge low-temperature drying feeding device includes a base plate 1, with an outer casing 2 mounted on top of the base plate 1, serving as the basic support structure for the entire feeding device. A first support plate 3 is fixedly connected to the right end of the outer casing 2, and a first motor 5 is housed inside the first support plate 3. The first motor 5 is supported and fixed by the first support plate 3 on the right side of the outer casing 2. A retainer 4 is threadedly connected to the left side wall of the outer casing 2 and the inside of the first support plate 3. A hinge frame 6 is fixedly connected to the bottom wall of the first support plate 3, and a support rod 7 is rotatably connected inside the bottom wall of the hinge frame 6. The front and rear ends of the support rod 7 are rotatably connected to the inside right side of the base plate 1. The hinge frame 6 at the bottom of the first support plate 3 is rotatably connected to the outside of the support rod 7 on the inside right side of the base plate 1, allowing for better control of the sludge discharge speed when the inclination of the outer casing 2 needs to be adjusted.

[0027] The output end of the first motor 5 is fixedly connected to a rotating shaft 8. The left end of the rotating shaft 8 is threadedly connected to a first connecting ring 9. The left side wall of the first connecting ring 9 is threadedly connected to a connecting rod 10. The left and right ends of the connecting rod 10 are rotatably connected inside the two retainers 4. The rotating shaft 8 on the output end of the first motor 5 is connected to the first connecting ring 9, and the first connecting ring 9 is connected to the connecting rod 10. Thus, when the rotating shaft 8 is driven, it drives the connecting rod 10 to rotate inside the outer casing 2 through the first connecting ring 9. When the connecting rod 10 rotates, the left and right ends of the connecting rod 10 will rotate inside the retainer 4, and the retainer 4 supports the left and right ends to ensure that the connecting rod 10 can operate stably and in a balanced manner.

[0028] A spiral rod 11 is fixedly connected to the outer side of the connecting rod 10. The spiral rod 11 is rotatably connected to the inside of the outer box 2. When the connecting rod 10 is driven, the spiral rod 11 on the outer side will also rotate synchronously to transport the sludge that enters the outer box 2 from the feed box 16. Support rods 12 are fixedly connected to the top left side of the bottom plate 1. The front and rear sides of the left end of the outer box 2 are rotatably connected to the top of the support rods 12. The support rods 12 are fixed to the top left side of the bottom plate 1. The front and rear sides of the left end of the outer box 2 are rotatably connected to the top of the support rods 12, providing a stable support point for the outer box 2, while allowing the outer box 2 to rotate at a certain angle with the top of the support rods 12 as the axis.

[0029] like Figure 1 - Figure 5 As shown, a discharge box 13 is connected through the bottom left end of the outer box 2. A guide box 14 is fixedly connected to the bottom wall of the discharge box 13. Because the discharge box 13 is connected through the bottom left end of the outer box 2, when the screw rod 11 pushes the sludge to the left end of the outer box 2, the sludge will flow downward through the discharge box 13. The guide box 14 fixedly connected to the bottom wall of the discharge box 13 further guides the sludge flowing out of the discharge box 13. Universal wheels 15 are fixedly connected to both the left and right sides of the bottom of the base plate 1. The universal wheels 15 fixedly connected to the left and right sides of the bottom give the device good mobility and make it easy to adjust its position in different working sites.

[0030] A feed box 16 is connected through the top right side of the base plate 1. A storage box 17 is connected through the top of the feed box 16. A feed pipe 18 is connected through the top rear side of the storage box 17. A second motor 19 is installed on the top of the storage box 17. When sludge is fed into the outer box 2, the sludge will first enter the storage box 17 through the feed pipe 18 to perform preliminary treatment on the sludge and excess sludge.

[0031] like Figure 1 - Figure 7As shown, a rotating rod 21 is fixedly connected to the output end of the second motor 19, and a second support plate 27 is fixedly connected inside the feed box 16. A sleeve 20 is fixedly connected to the top of the second support plate 27, and the bottom end of the rotating rod 21 is rotatably connected inside the sleeve 20. When the second motor 19 is started, the rotating rod 21 on the output end of the second motor 19 will rotate inside the sleeve 20 to support the bottom end of the rotating rod 21. In addition, by fixing the second support plate 27 inside the feed box 16, the top sleeve 20 is supported at the bottom.

[0032] A second connecting ring 22 is fixedly connected to the outer side of the middle part of the rotating rod 21. A stirring rod 23 is fixedly connected to the outer side of the four second connecting rings 22. The second connecting rings 22 on the outer side of the rotating rod 21 are connected to the stirring rod 23. When the rotating rod 21 is driven, the outer second connecting rings 22 and the stirring rod 23 will rotate synchronously. The stirring rod 23 continuously turns the sludge during the rotation process to prevent the sludge from settling and clumping, and to make the sludge composition uniform.

[0033] A fixing ring 24 is fixedly connected to the outer side of the bottom of the rotating rod 21. A connecting plate 25 is fixedly connected to the outer side of each fixing ring 24. A scraper 26 is fixedly connected to the bottom of each of the four connecting plates 25. The bottom wall of the four scrapers 26 is correspondingly set to the bottom wall of the inner wall of the storage box 17. As the rotating rod 21 rotates together, the connecting plates 25 connected to the outer side of the fixing ring 24 and the scrapers 26 fixed at the bottom scrape and clean the bottom wall of the inner wall of the storage box 17 during the rotation, thereby preventing sludge from sticking to the inside of the storage box 17 and preventing sludge from remaining in dead corners and the upper side wall of the second support plate 27.

[0034] It should be noted that this utility model is a feeding device for low-temperature drying of sludge. First, the first motor 5 and the second motor 19 are connected to an external power supply and control panel to supply power and control the device.

[0035] The first motor 5 is started, and it drives the rotating shaft 8 at its output end to rotate. A first connecting ring 9 is threadedly connected to the left end of the rotating shaft 8. Due to the characteristics of the threaded connection, the rotation of the rotating shaft 8 is transmitted to the first connecting ring 9, causing it to rotate synchronously with the rotating shaft 8. A connecting rod 10, threadedly connected to the left side wall of the first connecting ring 9, also rotates around its own axis when the first connecting ring 9 rotates. Because the left and right ends of the connecting rod 10 are rotatably connected inside the two fixing devices 4, the stability of the connecting rod 10 during rotation is ensured, preventing deviation or shaking. A spiral rod 11, fixedly connected to the outside of the connecting rod 10, rotates inside the outer casing 2 as the connecting rod 10 rotates. When sludge is placed inside the outer casing 2, the rotating spiral rod 11, using its spiral structure, pushes the sludge from the right side to the left side of the outer casing 2. In this process, the pitch and rotation speed of the spiral rod 11 determine the sludge conveying speed and conveying volume. The operator can control the rotation speed of the spiral rod 11 by adjusting the speed of the first motor 5, thereby adjusting the sludge conveying volume according to actual production needs.

[0036] The sludge enters the storage tank 17 through the feed pipe 18. The feed pipe 18, which is connected through the top rear side of the storage tank 17, provides a channel for the input of sludge. The storage tank 17 is connected through the feed box 16 to the top right side of the base plate 1, ensuring the stability of the structure.

[0037] The second motor 19 at the top of the storage tank 17 is started, and its output end drives the rotating rod 21 to rotate. The bottom end of the rotating rod 21 is rotatably connected to the sleeve 20 fixed at the top of the second support plate 27 inside the feed box 16, ensuring the stability of the rotating rod 21 during rotation. The second connecting ring 22 fixedly connected to the outer side of the middle part of the rotating rod 21 rotates accordingly, and the stirring rods 23 fixedly connected to the outer side of the four second connecting rings 22 stir the sludge in the storage tank 17. During the rotation, the stirring rods 23 continuously agitate the sludge to prevent sludge sedimentation and clumping, making the sludge composition uniform, which is conducive to subsequent transportation and drying treatment.

[0038] A fixing ring 24, fixedly connected to the outer side of the bottom end of the rotating rod 21, rotates together with the rotating rod 21. A connecting plate 25 connected to the outer side of the fixing ring 24 and a scraper 26 fixed at the bottom scrape and clean the inner wall and bottom of the storage tank 17 during rotation. The four scrapers 26 are positioned corresponding to the inner wall and bottom of the storage tank 17, effectively removing sludge adhering to the bottom, preventing sludge residue, ensuring smooth discharge from the bottom of the storage tank 17, and also helping to maintain the uniformity of sludge mixing, preventing sludge accumulation at the bottom from affecting the overall mixing effect.

[0039] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A feeding device for sludge low-temperature drying, comprising a base plate (1), characterized in that: The top of the bottom plate (1) is provided with an outer box (2), the right end of the outer box (2) is fixedly connected with a first support plate (3), the inside of the first support plate (3) is provided with a first motor (5), the left side wall of the outer box (2) and the inside of the first support plate (3) are threadedly connected with a fixator (4), the bottom wall of the first support plate (3) is fixedly connected with a hinged frame (6), the inside of the bottom wall of the hinged frame (6) is rotatably connected with a support rod (7), the front and rear ends of the support rod (7) are rotatably connected to the inside right side of the bottom plate (1), the output end of the first motor (5) is fixedly connected with a rotating shaft (8), the left end of the rotating shaft (8) is threadedly connected with a first connecting ring (9), the left side wall of the first connecting ring (9) is threadedly connected with a connecting rod (10), the left and right ends of the connecting rod (10) are rotatably connected to the inside of the two fixators (4).

2. The sludge low-temperature drying feeding device according to claim 1, characterized in that: The outside of the connecting rod (10) is fixedly connected with a spiral rod (11), the spiral rod (11) is rotatably connected to the inside of the outer box (2), the left top of the bottom plate (1) is fixedly connected with a support rod (12), the left end of the outer box (2) is rotatably connected to the top of the support rod (12).

3. The sludge low-temperature drying feeding device according to claim 1, characterized in that: The left end bottom of the outer box (2) is connected with a discharge box (13), the bottom wall of the discharge box (13) is fixedly connected with a flow guide box (14), the bottom of the bottom plate (1) is fixedly connected with a universal wheel (15).

4. The sludge low-temperature drying feeding device according to claim 1, characterized in that: The top right side of the bottom plate (1) is connected with a feeding box (16), the top of the feeding box (16) is connected with a storage box (17), the top rear side of the storage box (17) is connected with a feeding pipe (18), the top of the storage box (17) is provided with a second motor (19).

5. The sludge low-temperature drying feeding device according to claim 4, characterized in that: The output end of the second motor (19) is fixedly connected with a rotating rod (21), the inside of the feeding box (16) is fixedly connected with a second support plate (27), the top of the second support plate (27) is fixedly connected with a sleeve (20), the bottom end of the rotating rod (21) is rotatably connected to the inside of the sleeve (20).

6. The sludge low-temperature drying feeding device according to claim 5, characterized in that: The outside of the middle of the rotating rod (21) is fixedly connected with a second connecting ring (22), the outside of the four second connecting rings (22) is fixedly connected with a stirring rod (23), the bottom end of the rotating rod (21) is fixedly connected with a fixing ring (24).

7. The sludge low-temperature drying feeding device according to claim 6, characterized in that: The outside of the fixing ring (24) is fixedly connected with a connecting plate (25), the bottom of the four connecting plates (25) is fixedly connected with a scraper (26), the bottom wall of the four scrapers (26) is correspondingly arranged with the inner wall bottom wall of the storage box (17).

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