Air inlet structure of sludge drying hopper

Abstract

The utility model discloses an air inlet structure of sludge drying hopper, and the top of base is fixedly connected with the limiting frame and bottom plate respectively, the bottom plate is located inside the limiting frame, the top of bottom plate is fixedly connected with the ventilating plate, the ventilating plate is perpendicularly arranged, the side surface of ventilating plate is horizontally slidably connected with the movable frame, the one side of movable frame is fixedly connected with a plurality of first scrapers, and the first scrapers are respectively attached to the bottom plate and ventilating plate, the other side of movable frame is fixedly connected with the connecting rod, and the limiting frame is provided with the through groove, the utility model makes the connecting rod connect the movable frame and connecting plate, when the electric push rod works, the movable frame can drive the first scraper to scrape the sludge dried on the bottom plate and ventilating plate, thereby effectively improving the work efficiency.

Description

Technical Field

[0001] This utility model relates to the field of sludge drying technology, specifically to an air inlet structure for a sludge drying hopper. Background Technology

[0002] The sludge drying hopper is an intermittent treatment device that integrates storage, preheating, preliminary dewatering, and partial drying functions. Its core working principle is to use low-temperature hot air generated by a hot air furnace to evenly pass through the accumulated wet sludge layer from the air distribution plate at the bottom of the hopper. Through convection heat exchange, some of the moisture in the sludge is evaporated. This device can not only effectively reduce the moisture content of the sludge and reduce the load on subsequent treatment, but also play a certain role in sterilization and deodorization. It is often used in the front-end pretreatment stage of processes such as sludge incineration and composting.

[0003] In the prior art, the applicant has applied for a sludge drying hopper with vertical ventilation plates (publication number: CN209960866U), which discloses that the bottom plate has a hollow structure and multiple first ventilation holes that vertically penetrate its body. The upper middle part of the bottom plate has multiple vertical ventilation plates that are connected to its body. The vertical ventilation plates have multiple second ventilation holes that horizontally penetrate its body. A sealing block is slidably provided at its upper end. The sealing block includes a sealing part and a shovel. The bottom end of the sealing part has a first slot, and the top end of the first slot has a second slot. During sludge drying, when the sealing block moves downward under the influence of gravity, it can seal the second ventilation holes on the vertical ventilation plates, thereby effectively reducing the waste of hot air resources.

[0004] However, some of the dried sludge will adhere to the base plate and the vertical ventilation plate. Although the dried sludge on the vertical ventilation plate can be scraped off when the sealed pressure block moves down, the sludge on the base plate may still need to be manually cleaned by the staff, which is more troublesome and reduces work efficiency. Utility Model Content

[0005] This utility model provides an air inlet structure for a sludge drying hopper, which aims to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an air inlet structure for a sludge drying hopper, comprising a base, a limiting frame and a bottom plate fixedly connected to the top of the base, the bottom plate being located inside the limiting frame, a ventilation plate fixedly connected to the top of the bottom plate, the ventilation plate being vertically arranged, a movable frame being horizontally slidably connected to the side surface of the ventilation plate, a plurality of first scrapers fixedly connected to one side of the movable frame, the first scrapers being respectively in contact with the bottom plate and the ventilation plate, a connecting rod fixedly connected to the other side of the movable frame, a through groove being provided on the limiting frame, the end of the connecting rod away from the movable frame extending through the through groove to the outside of the limiting frame, and being fixedly connected to a connecting plate.

[0007] As a further optimization, a groove adapted to the movable frame is provided on one inner wall of the limiting frame. The movable frame is located inside the groove. A mounting frame is fixedly connected to one side of the limiting frame. An electric push rod is fixedly connected inside the mounting frame. The movable end of the electric push rod extends to the outside of the mounting frame and is fixedly connected to one side of the connecting plate.

[0008] As a further optimization, the inner cavity of the base plate is connected to the inner cavity of the ventilation plate. The base plate is provided with a number of first air outlets, and the ventilation plate is provided with a number of second air outlets. Both the first and second air outlets are inclined, and filters are fixedly connected inside the first and second air outlets.

[0009] As a further optimization, the base is provided with an air supply pipe inside, one end of which extends to the outside of the base. A connecting pipe is fixedly connected to the side surface of the air supply pipe, and the end of the connecting pipe away from the air supply pipe is fixedly connected to the bottom of the base plate. The inner cavity of the connecting pipe is connected to both the air supply pipe and the inner cavity of the base plate.

[0010] As a further optimization, a pressure plate is vertically slidably connected to the side surface of the ventilation plate, and a second scraper is fixedly connected inside the pressure plate, the second scraper being in contact with the ventilation plate.

[0011] As a further optimization, a limiting plate is rotatably connected to the limiting frame, forklift slots are symmetrically provided on the bottom of the base, a first connecting frame is fixedly connected to the side surface of the base, and a second connecting frame is fixedly connected to the side surface of the limiting frame.

[0012] As a further optimization, the top of the first connecting frame is flush with the top of the base, the bottom of the second connecting frame is flush with the bottom of the limiting frame, the bottom of the second connecting frame is fitted with the top of the first connecting frame, and fixing holes are provided on both the first and second connecting frames.

[0013] Compared with the prior art, the beneficial effects of this application are as follows: by setting up an electric push rod, a connecting plate, a connecting rod, a movable frame and a first scraper, the connecting rod connects the movable frame and the connecting plate together. When the electric push rod is working, the movable frame can drive the first scraper to scrape off the dried sludge attached to the bottom plate and the ventilation plate, thereby effectively improving work efficiency. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the installation of the limiting frame in this utility model;

[0016] Figure 3This is a schematic diagram of the installation of the connecting plate in this utility model;

[0017] Figure 4 This is a cross-sectional view of the limiting frame in this utility model;

[0018] Figure 5 for Figure 4 Enlarged view of point A in the image.

[0019] In the diagram: 1. Base; 2. Limiting frame; 3. Base plate; 4. Ventilation plate; 5. Mounting bracket; 6. Electric push rod; 7. Connecting plate; 8. Connecting rod; 9. Moving frame; 10. First scraper; 11. Through groove; 12. Air duct; 13. Connecting pipe; 14. First air outlet; 15. Second air outlet; 16. Filter screen; 17. Pressure plate; 18. Second scraper; 19. First connecting frame; 20. Second connecting frame; 21. Limiting plate. Detailed Implementation

[0020] 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.

[0021] This utility model provides an air inlet structure for a sludge drying hopper, such as Figure 1 , Figure 3 and Figure 4 As shown, the device includes a base 1. A limiting frame 2 and a base plate 3 are fixedly connected to the top of the base 1. The base plate 3 is located inside the limiting frame 2. A ventilation plate 4 is fixedly connected to the top of the base plate 3. The ventilation plate 4 is vertically arranged. A movable frame 9 is horizontally slidably connected to the side surface of the ventilation plate 4. Several first scrapers 10 are fixedly connected to one side of the movable frame 9. The first scrapers 10 are respectively attached to the base plate 3 and the ventilation plate 4. A connecting rod 8 is fixedly connected to the other side of the movable frame 9. A through groove 11 is provided on the limiting frame 2. The end of the connecting rod 8 away from the movable frame 9 extends to the outside of the limiting frame 2 through the through groove 11 and is fixedly connected to a connecting plate 7.

[0022] The inner wall of one side of the limiting frame 2 is provided with a groove that matches the movable frame 9. The movable frame 9 is located inside the groove. A mounting frame 5 is fixedly connected to one side of the limiting frame 2. An electric push rod 6 is fixedly connected inside the mounting frame 5. The movable end of the electric push rod 6 extends to the outside of the mounting frame 5 and is fixedly connected to one side of the connecting plate 7.

[0023] The movable frame 9 is connected to the connecting plate 7 via the connecting rod 8. When the electric push rod 6 moves the connecting plate 7, the movable frame 9 can move accordingly. Before drying the sludge, the staff needs to control the electric push rod 6 to move the movable frame 9 into the groove. Then the sludge can be put into the limiting frame 2. The bottom plate 3 and the ventilation plate 4 are used for air intake to dry the sludge. After the sludge drying is completed and discharged from the inside of the limiting frame 2, the staff can control the electric push rod 6 to move the movable frame 9. When the movable frame 9 moves, it can drive the first scraper 10 to scrape off the dried sludge attached to the bottom plate 3 and the ventilation plate 4.

[0024] Furthermore, in order to achieve the drying treatment of sludge, such as Figure 1 , Figure 2 and Figure 5 As shown, the inner cavity of the base plate 3 is connected to the inner cavity of the ventilation plate 4. The base plate 3 is provided with a number of first air outlet holes 14, and the ventilation plate 4 is provided with a number of second air outlet holes 15. Both the first air outlet holes 14 and the second air outlet holes 15 are inclined. Both the first air outlet holes 14 and the second air outlet holes 15 are fixedly connected to a filter screen 16.

[0025] An air supply pipe 12 is provided inside the base 1. One end of the air supply pipe 12 extends to the outside of the base 1. A connecting pipe 13 is fixedly connected to the side surface of the air supply pipe 12. The end of the connecting pipe 13 away from the air supply pipe 12 is fixedly connected to the bottom of the base plate 3. The inner cavity of the connecting pipe 13 is connected to the inner cavity of the air supply pipe 12 and the inner cavity of the base plate 3 respectively.

[0026] When drying sludge, the air supply pipe 12 needs to be extended from one end of the base 1 and connected to the hot air furnace. Hot air can enter the inner cavity of the base plate 3 and the ventilation plate 4 through the air supply pipe 12 and the connecting pipe 13, and can enter the interior of the limiting frame 2 through the first air outlet 14 and the second air outlet 15, thereby realizing the drying treatment of sludge. The inclined arrangement of the first air outlet 14 and the second air outlet 15 can effectively reduce the possibility of sludge entering the inner cavity of the base plate 3 and the ventilation plate 4. The setting of the filter screen 16 can effectively reduce the possibility of dried sludge entering the inner cavity of the base plate 3 and the ventilation plate 4.

[0027] Furthermore, in order to reduce the waste of hot air resources during sludge drying, such as Figure 1 , Figure 2 and Figure 4 As shown, a pressure plate 17 is vertically slidably connected to the side surface of the ventilation plate 4, and a second scraper 18 is fixedly connected inside the pressure plate 17, with the second scraper 18 in contact with the ventilation plate 4.

[0028] When drying sludge, the pressure plate 17 can be placed on the ventilation plate 4. The pressure plate 17 needs to be removed after the drying process is completed. During the sludge drying process, the pressure plate 17 will always press on the top of the sludge. As the water in the sludge evaporates, the volume of the sludge will gradually decrease, and the pressure plate 17 will move down under the influence of gravity. During the downward movement of the pressure plate 17, it can close part of the second air outlet 15 located above the ventilation plate 4, thereby effectively reducing the waste of hot air resources. In addition, when the pressure plate 17 moves down, it can drive the second scraper 18 to remove part of the dried sludge attached to the ventilation plate 4, effectively reducing the burden of subsequent cleaning.

[0029] In order to improve the stability of the base 1 and the limiting frame 2 when they are installed together, such as Figure 1 , Figure 2 and Figure 4 As shown, a limiting plate 21 is rotatably connected to the limiting frame 2, forklift slots are symmetrically provided on the bottom of the base 1, a first connecting frame 19 is fixedly connected to the side surface of the base 1, and a second connecting frame 20 is fixedly connected to the side surface of the limiting frame 2.

[0030] The top of the first connecting frame 19 is flush with the top of the base 1, the bottom of the second connecting frame 20 is flush with the bottom of the limiting frame 2, and the bottom of the second connecting frame 20 is in contact with the top of the first connecting frame 19. Fixing holes are provided on both the first connecting frame 19 and the second connecting frame 20.

[0031] After the limiting frame 2 is installed on the base 1, bolts can be used to pass through the fixing holes on the first connecting frame 19 and the second connecting frame 20 to reinforce them, thereby effectively improving the stability of the base 1 and the limiting frame 2 when they are installed together. The limiting plate 21 is set to close the limiting frame 2, which effectively reduces the possibility of sludge detaching from the inside of the limiting frame 2 during drying.

[0032] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An air inlet structure for a sludge drying hopper, comprising a base (1), characterized in that: The top of the base (1) is fixedly connected to a limiting frame (2) and a base plate (3). The base plate (3) is located inside the limiting frame (2). A ventilation plate (4) is fixedly connected to the top of the base plate (3). The ventilation plate (4) is vertically arranged. A movable frame (9) is horizontally slidably connected to the side surface of the ventilation plate (4). Several first scrapers (10) are fixedly connected to one side of the movable frame (9). The first scrapers (10) are respectively attached to the base plate (3) and the ventilation plate (4). A connecting rod (8) is fixedly connected to the other side of the movable frame (9). A through groove (11) is provided on the limiting frame (2). The end of the connecting rod (8) away from the movable frame (9) extends to the outside of the limiting frame (2) through the through groove (11) and is fixedly connected to a connecting plate (7).

2. The air inlet structure of the sludge drying hopper according to claim 1, characterized in that: The inner wall of one side of the limiting frame (2) is provided with a groove that is compatible with the movable frame (9). The movable frame (9) is located inside the groove. A mounting frame (5) is fixedly connected to one side of the limiting frame (2). An electric push rod (6) is fixedly connected inside the mounting frame (5). The movable end of the electric push rod (6) extends to the outside of the mounting frame (5) and is fixedly connected to one side of the connecting plate (7).

3. The air inlet structure of the sludge drying hopper according to claim 1, characterized in that: The inner cavity of the base plate (3) is connected to the inner cavity of the ventilation plate (4). The base plate (3) is provided with a plurality of first air outlet holes (14), and the ventilation plate (4) is provided with a plurality of second air outlet holes (15). The first air outlet holes (14) and the second air outlet holes (15) are both inclined. The interior of the first air outlet holes (14) and the second air outlet holes (15) is fixedly connected with a filter screen (16).

4. The air inlet structure of a sludge drying hopper according to claim 3, characterized in that: An air supply pipe (12) is provided inside the base (1). One end of the air supply pipe (12) extends to the outside of the base (1). A connecting pipe (13) is fixedly connected to the side surface of the air supply pipe (12). The end of the connecting pipe (13) away from the air supply pipe (12) is fixedly connected to the bottom of the base plate (3). The inner cavity of the connecting pipe (13) is connected to the inner cavity of the air supply pipe (12) and the inner cavity of the base plate (3).

5. The air inlet structure of a sludge drying hopper according to claim 1, characterized in that: A pressure plate (17) is vertically slidably connected to the side surface of the ventilation plate (4), and a second scraper (18) is fixedly connected inside the pressure plate (17), with the second scraper (18) in contact with the ventilation plate (4).

6. The air inlet structure of a sludge drying hopper according to claim 1, characterized in that: A limiting plate (21) is rotatably connected to the limiting frame (2). Forklift slots are symmetrically provided at the bottom of the base (1). A first connecting frame (19) is fixedly connected to the side surface of the base (1). A second connecting frame (20) is fixedly connected to the side surface of the limiting frame (2).

7. The air inlet structure of a sludge drying hopper according to claim 6, characterized in that: The top of the first connecting frame (19) is flush with the top of the base (1), the bottom of the second connecting frame (20) is flush with the bottom of the limiting frame (2), the bottom of the second connecting frame (20) is in contact with the top of the first connecting frame (19), and fixing holes are provided on both the first connecting frame (19) and the second connecting frame (20).

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