Disc structure for drying landfill leachate

Abstract

The utility model discloses a disc structure for drying landfill leachate, and relates to the technical field of landfill leachate drying, the disc heating uniformity is improved, the disc structure comprises a rotating shaft and a plurality of discs fixed to the rotating shaft at equal intervals, the discs and the rotating shaft are each of a hollow structure, and partition plates are arranged in the rotating shaft; the hollow structure of the rotating shaft is divided by a partition plate into an inflow chamber allowing a heat medium to flow in and an outflow chamber allowing the heat medium to flow out, an inflow port communicated with the disc is formed in the inflow chamber of the rotating shaft, and an outflow port communicated with the disc is formed in the outflow chamber of the rotating shaft. A partition plate is arranged in the disc and located between the flow-in opening and the flow-out opening, and the hollow structure of the disc is divided by the partition plate to form a flow channel for a heat supply medium to flow. The problem that in the prior art, the interior of a disc is heated unevenly is solved.

Description

Technical Field

[0001] This application relates to the technical field of landfill leachate drying, and in particular to a disc structure for landfill leachate drying. Background Technology

[0002] Currently, the main method for treating landfill leachate is through disc-type drying devices. The core structure of this drying device includes a hollow rotating shaft and several hollow discs coaxially connected to it. The rotating shaft and each disc form fluid channels through axial connecting holes. The workflow is as follows: a high-temperature heat medium (such as saturated steam) is introduced into the hollow cavity of the rotating shaft and distributed through the connecting holes to the hollow interlayers of each disc; heat energy is transferred to the disc surface through thermal conduction, drying the landfill leachate sprayed on the disc surface; finally, a scraper mechanism removes the solid crystals formed during drying, achieving pollutant reduction.

[0003] In existing technologies, the heat transfer medium is mainly transported unidirectionally through an axial connecting hole between the rotating shaft and the disk. This direct-flow heat transfer system has a significant drawback: the flow path of the heat transfer medium within the disk cavity lacks proper guidance, resulting in insufficient uniformity of medium distribution and affecting the drying effect of landfill leachate. Utility Model Content

[0004] To improve the uniformity of heating of the disc, this application provides a disc structure for drying landfill leachate.

[0005] This application provides a disc structure for drying landfill leachate, employing the following technical solution:

[0006] A disc structure for drying landfill leachate includes a rotating shaft and several discs fixed at equal intervals on the rotating shaft. Both the discs and the rotating shaft are hollow structures. A partition plate is provided inside the rotating shaft, and the hollow structure of the rotating shaft is divided by the partition plate into an inflow chamber for the inflow of a heat medium and an outflow chamber for the outflow of a heat medium. An inlet communicating with a disc is opened in the inflow chamber of the rotating shaft, and an outlet communicating with a disc is opened in the outflow chamber of the rotating shaft. A partition plate is provided inside the disc, and the partition plate is located between the inflow inlet and the outflow outlet. The hollow structure of the disc is divided by the partition plate to form a flow channel for the flow of the heat medium.

[0007] By adopting the above technical solution, a partition plate is installed inside the rotating shaft to divide the hollow structure of the rotating shaft into an inflow chamber and an outflow chamber. An inlet communicating with the disc is opened in the inflow chamber, and an outlet communicating with the disc is opened in the outflow chamber. Simultaneously, a partition plate is installed inside the disc, dividing the hollow structure of the disc into specific flow channels. This structure effectively solves the problem of uneven heating inside the disc in existing technologies, allowing the heat medium to flow evenly inside the disc, thereby improving the drying effect and efficiency of landfill leachate and ensuring drying quality.

[0008] Optionally, the partition plate is inclined from the direction of inflow into the chamber to the direction of outflow into the chamber, forming a drainage channel.

[0009] By adopting the above technical solution, the partition plate is inclined from high to low from the direction of inflow to outflow to form a drainage channel, which helps the smooth discharge of liquids such as condensate, avoids the accumulation of liquid in the rotating shaft, further improves the flow efficiency and drying effect of the heat medium, and prevents problems such as uneven heating caused by liquid accumulation.

[0010] Optionally, the inner surface of the disk is provided with a plurality of grooves in the circumferential direction, so that the inner surface of the disk forms a convex and concave structure.

[0011] By adopting the above technical solution, the groove structure slows down the flow rate of the medium and prolongs the heat exchange time.

[0012] Optionally, a plurality of flow guide baffles are provided at equal intervals around the axis inside the disk, and each flow guide baffle is provided with a flow guide hole that penetrates the baffle plate body. The flow guide holes of adjacent flow guide baffles are staggered along the circumference to form a non-linear airflow channel. A water outlet is opened at the end of the flow guide baffle away from the axis of the disk so that the liquid can flow around the outermost inner circumference of the disk.

[0013] By adopting the above technical solution, equally spaced flow guide baffles are set inside the disk, and through-flow guide holes are set on the flow guide baffles. The flow guide holes of adjacent flow guide baffles are staggered along the circumference to form a non-linear airflow channel. At the same time, a water outlet is opened at the end of the flow guide baffle away from the disk axis. This design can optimize the flow path of airflow inside the disk, make the flow of heat medium inside the disk more uniform, avoid local overheating or overcooling, improve heat exchange efficiency, and enhance the drying effect. The water outlet helps the liquid to drain out and prevents the liquid from accumulating inside the disk and affecting the drying process.

[0014] Optionally, the partition plate has bends on its two long sides that bend toward the outflow chamber, and the inflow inlet and outlet are both located near the same bend.

[0015] By adopting the above technical solution, the liquid is more concentrated in the middle of the separator, reducing flow resistance.

[0016] Optionally, the rotating shaft has multiple inlets connected to each disk, and the multiple inlets are distributed circumferentially around the rotating shaft, with the diameter of the multiple inlets gradually decreasing from the side closer to the bend to the side farther away from the bend.

[0017] Optionally, the partition plate has an arc-shaped structure, and the opening of the arc is arranged facing the outlet direction to guide the hot medium to the outlet.

[0018] By adopting the above technical solution, the medium is guided to form eddy currents to enhance the heat exchange in a specific direction.

[0019] Optionally, the partition plate extends linearly in a direction tangential to the axis of rotation.

[0020] In summary, this application includes at least one of the following beneficial effects:

[0021] 1. By optimizing the internal structure of the rotating shaft and the disk, the heat medium can be evenly distributed and flowed, effectively solving the problem of uneven heating inside the disk in the prior art;

[0022] 2. The inclined design of the partition plate forms a drainage channel, which facilitates the smooth discharge of liquids such as condensate, avoids the accumulation of liquid in the rotating shaft, improves the flow efficiency of the heat medium, and prevents the heat medium from being obstructed due to liquid, thus affecting the drying process. Attached Figure Description

[0023] Figure 1 This is an overall schematic diagram of the drying equipment and disc structure in Example 1;

[0024] Figure 2 This is a cross-sectional view of the drying equipment in Example 1;

[0025] Figure 3 This is a cross-sectional view of the disk in Example 1;

[0026] Figure 4 This is a cross-sectional view of the disk showing the groove in Embodiment 2;

[0027] Figure 5 This is a cross-sectional view of the flow guide baffle in Embodiment 3;

[0028] Figure 6 This is a cross-sectional view of the connection between the rotating shaft and the disk in Embodiment 4;

[0029] Figure 7 This is a cross-sectional view of the partition plate in Example 4;

[0030] Figure 8This is a cross-sectional view of the partition plate shown in Example 5.

[0031] Explanation of reference numerals in the attached drawings: 1. Rotating shaft; 2. Disc; 3. Divider plate; 4. Inflow chamber; 5. Outflow chamber; 6. Inflow inlet; 7. Outflow outlet; 8. Partition plate; 9. Groove; 10. Guide baffle plate; 11. Guide flow hole; 12. Water outlet; 13. Bend. Detailed Implementation

[0032] The present application will be further described in detail below with reference to the accompanying drawings.

[0033] Example 1

[0034] Reference Figure 1 , 2 The disc structure used for drying landfill leachate in this application mainly includes a rotating shaft 1 and multiple discs 2 fixed at equal intervals on the rotating shaft 1. Both the rotating shaft 1 and the discs 2 are hollow structures.

[0035] Reference Figure 2 , 3 A partition plate 3 is installed inside the rotating shaft 1, which divides the hollow part of the rotating shaft 1 into an inflow chamber 4 and an outflow chamber 5. The partition plate 3 on the inflow chamber 4 side is positioned higher, while the partition plate 3 on the outflow chamber 5 side is positioned lower, forming an inclined drainage channel. This facilitates the smooth discharge of condensate and other liquids generated during the drying process along the partition plate 3 from the rotating shaft 1, preventing liquid from accumulating inside the rotating shaft 1 and affecting the normal flow of the heat medium and the drying effect, thereby improving the flow efficiency of the heat medium.

[0036] Reference Figure 2 , 3 An inlet 6, connected to the disc 2, is provided in the inflow chamber 4 of the rotating shaft 1; and an outlet 7, connected to the disc 2, is provided on one side of the outflow chamber 5 of the rotating shaft 1. Each disc 2 has a partition plate 8 inside, which is located between the inlet 6 and the outlet 7. The inlet 6 and the outlet 7 are close to the partition plate 8, so that the hollow structure of the disc 2 is divided by the partition plate 8 to form a flow channel for the flow of the heating medium. This guides the heating medium, such as steam, to enter the disc 2 from the inlet 6, flow around the inside of the disc 2 in an orderly manner, and exit through the outlet 7, thereby improving the heat exchange efficiency between the heating medium and the disc 2.

[0037] When drying landfill leachate, a heat medium (such as steam) enters from the inlet chamber 4 of the rotating shaft 1 and flows into the channels inside each disc 2 through the inlet 6. The heat medium flows within the channels, transferring heat to the discs 2. The landfill leachate is sprayed onto the surface of the discs 2 and dried using the heat from the discs. After the moisture evaporates and solid crystals form, they are scraped off and discharged. The heat medium after heat exchange, along with any condensate that may be generated, flows out from the outlet 7 and exits through the outlet chamber 5 of the rotating shaft 1, thus discharging the entire drying unit.

[0038] Example 2

[0039] Reference Figure 4 In embodiment 2, a plurality of grooves 9 are uniformly provided around the inner surface of the disc 2, so that the inner surface of the disc 2 forms an uneven structure to slow down the flow rate of the heat medium, prolong the heat exchange time, and enable the heat medium to exchange heat with the disc 2 more fully, thereby improving the drying efficiency.

[0040] Example 3

[0041] Reference Figure 5 Based on Embodiment 1, in Embodiment 3, multiple flow guide baffles 10 are evenly spaced around the axis inside the disk 2. Each flow guide baffle 10 has a through-hole 11, and the through-holes 11 on adjacent flow guide baffles 10 are staggered in the circumferential direction of the disk 2, forming a non-linear airflow channel. Preferably, the through-holes 11 of adjacent flow guide baffles 10 are located at both ends of the flow guide baffles 10, thus maximizing the flow path of the heat medium inside the disk 2, allowing the heat medium to transfer heat to the disk 2 more evenly and improving heat exchange efficiency. Furthermore, a water outlet 12 is provided at the end of the flow guide baffle 10 away from the axis of the disk 2, so that liquid (such as condensate) can flow smoothly around the outermost inner circumference of the disk 2 and be discharged, preventing liquid from accumulating inside the disk 2 and affecting the drying process. The diameter of the water inlet 12 is much smaller than that of the guide hole 11, and the diameter is used to meet the drainage of the generated liquid (such as condensate). Therefore, in actual use, the condensate will cover the water inlet 12, making it difficult for the hot medium gas to pass through the water inlet 12, and at the same time, it will accelerate the increase of the condensate flow rate.

[0042] Example 4

[0043] Reference Figure 6 , 7 This embodiment further optimizes the structure of the partition plate 3 based on embodiment 1. Bending portions 13 are provided on both long sides of the partition plate 3, bending towards the outflow chamber 5. The inflow inlet 6 and outflow outlet 7 are both located near the same bending portion 13. The bending portion 13 causes the outflowing liquid to concentrate more effectively in the middle of the partition plate 3, reducing flow resistance.

[0044] Reference Figure 7 The rotating shaft 1 has multiple inlets 6 connected to each disk 2. These inlets 6 are evenly spaced around the circumference of the rotating shaft 1, and the diameter of the multiple inlets 6 gradually decreases from the side closer to the bend 13 to the side farther away from the bend 13. The inlets 6 of different diameters can be reasonably distributed according to the flow rate and pressure of the heat medium, so that the heat medium is more evenly distributed when entering the disk 2, avoiding the heat medium from concentrating in a certain area and causing uneven heating inside the disk 2, further ensuring the uniform flow of the heat medium in the disk 2, and improving the uniformity and efficiency of drying.

[0045] Reference Figure 7 The partition plate 8 inside the disk 2 has an arc-shaped structure, with the arc opening facing the outlet 7. The arc-shaped partition plate 8 can reduce the resistance when the heat medium flows inside the disk 2, allowing the heat medium to flow more smoothly along the partition plate 8 to the outlet 7, thereby improving the flow efficiency of the heat medium.

[0046] Example 5

[0047] Reference Figure 8 The difference between Example 5 and Example 4 is that the partition plate 8 inside the disk 2 extends in a straight line along the direction tangent to the rotation axis 1.

[0048] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A disc structure for drying landfill leachate, comprising a rotating shaft (1) and a plurality of equidistantly fixed discs (2) on the rotating shaft (1), the disc (2) and the rotating shaft (1) are both hollow structures, characterized in that: The rotating shaft (1) is provided with a partition plate (3). The hollow structure of the rotating shaft (1) is divided by the partition plate (3) to form an inflow chamber (4) for the inflow of heat medium and an outflow chamber (5) for the outflow of heat medium. The inflow chamber (4) of the rotating shaft (1) is provided with an inlet (6) communicating with the disc (2). The outflow chamber (5) of the rotating shaft (1) is provided with an outlet (7) communicating with the disc (2). The disc (2) is provided with a partition plate (8) inside. The partition plate (8) is located between the inlet (6) and the outlet (7). The hollow structure of the disc (2) is divided by the partition plate (8) to form a flow channel for the flow of heat medium.

2. A disc structure for drying of landfill leachate according to claim 1, characterized in that: The partition plate (3) slopes from the direction of the inflow chamber (4) toward the direction of the outflow chamber (5) in a direction from high to low, forming a drainage channel.

3. A disc structure for drying of landfill leachate according to claim 2, characterized in that: The inner surface of the disk (2) is provided with several grooves (9) around the circumference, so that the inner surface of the disk (2) forms a convex and concave structure.

4. A disc structure for drying of landfill leachate according to claim 2, characterized in that: The disk (2) is provided with several flow guide baffles (10) at equal intervals around the axis. Each flow guide baffle (10) is provided with a flow guide hole (11) that penetrates the baffle plate. The flow guide holes (11) of adjacent flow guide baffles (10) are staggered along the circumference to form a non-linear airflow channel. A water outlet (12) is opened at one end of the flow guide baffle (10) away from the axis of the disk (2) so that the liquid can flow around the outermost inner circumference of the disk (2).

5. A disc structure for dewatering of landfill leachate according to claim 2, characterized in that: The partition plate (3) has two long sides with bent portions (13) that bend toward the outflow chamber (5), and the inflow inlet (6) and the outflow outlet (7) are both located near the same bent portion (13).

6. A disc structure for drying landfill leachate according to claim 5, characterized in that: The rotating shaft (1) has multiple inlet ports (6) that are connected to each disk (2). The multiple inlet ports (6) are distributed circumferentially around the rotating shaft (1). The diameter of the multiple inlet ports (6) gradually decreases from the side closer to the bend (13) to the side farther away from the bend (13).

7. A disc structure for dewatering of landfill leachate according to claim 5, characterized in that: The partition plate (8) has an arc-shaped structure, and the opening of the arc is set in the direction of the outlet (7) to guide the hot medium to flow to the outlet (7).

8. A disc structure for dewatering of landfill leachate according to claim 5, characterized in that: The partition plate (8) extends in a straight line along a direction tangent to the rotation axis (1).

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