Sludge drying machine

Abstract

The utility model provides a sludge drying machine, which relates to the field of drying machines, and comprises a box body with an inlet and an outlet, and a plurality of chain belt components stacked in the box body, the conveying direction of any chain belt assembly is opposite to that of the adjacent chain belt assembly, any chain belt assembly deviates relative to the adjacent chain belt assembly, and the deviation part forms a material receiving area; when each chain belt assembly independently operates, sludge entering the chain belt assembly through the inlet is thrown to the material receiving area of the adjacent chain belt assembly in the conveying process, and is transferred to the outlet under repeated throwing of the multiple chain belt assemblies; according to the utility model, the sludge falling from the first opening to the first chain belt assembly is transferred to the second opening after being thrown for multiple times, and during the throwing period, the hot atmosphere in the box is assisted by multiple times of line throwing actions, so that the technical problem that the sludge is hardened and caked can be effectively avoided.

Description

Technical Field

[0001] The utility model relates to the field of drying machines, in particular to a sludge drying machine. Background Art

[0002] Sludge drying, also known as sludge dehydration, refers to the technical process of reducing the water content of sludge by means of infiltration, evaporation, etc. At present, due to constraints such as site, sludge drying will be completed in a limited box. Based on this, including reducing the running speed of the mesh belt and increasing the length of the mesh belt, the residence time of the sludge in the hot atmosphere can be increased in the limited box to obtain a better dehydration effect. However, from the actual situation, the sludge itself is actually stationary relative to the mesh belt except for the entry and exit. The sludge has problems such as uneven drying inside and outside, compaction and agglomeration during drying, and the dehydration quality needs to be improved. Utility Model Content

[0003] The purpose of the utility model is to provide a sludge drying machine to solve the above technical problems.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0005] The sludge dryer includes a box body with an inlet and an outlet, and also includes a plurality of chain belt assemblies stacked in the box body;

[0006] The conveying direction of any chain belt assembly is opposite to that of the adjacent chain belt assembly, and any chain belt assembly is offset relative to the adjacent chain belt assembly, and the offset portion constitutes a material receiving area;

[0007] When each chain belt assembly operates independently, the sludge entering the chain belt assembly through the inlet is thrown to the material receiving area of ​​the adjacent chain belt assembly during the conveying process, and is transferred to the outlet under the repeated throwing of multiple chain belt assemblies;

[0008] Also included is a channel for delivering hot air into the interlayer of each link belt assembly.

[0009] Preferably, the mesh belt member is below the chain belt assembly closest to the bottom of the box, and the conveying direction of the mesh belt member is consistent with that of the chain belt assembly.

[0010] Preferably, the mesh belt member and the chain belt assembly closest to the bottom of the box transport the drying sludge to the box outlet.

[0011] Preferably, it also includes a heat exchanger connected to the box body, which cools the hot air with moisture entering the heat exchanger from the box body, and returns the cooled air with residual temperature to the channel.

[0012] Preferably, it also includes a valve for controlling the flow of air with residual temperature entering the channel.

[0013] Preferably, the air with residual temperature mixes with the hot air and then enters the channel.

[0014] Preferably, the source of hot air includes but is not limited to kiln heat and boiler heat.

[0015] Preferably, condensed water generated by cooling the hot air containing moisture is discharged through a heat exchanger.

[0016] The beneficial effects of the utility model are:

[0017] 1. In the utility model, the sludge falling from the first opening to the first chain belt assembly is transferred to the second opening after multiple throwing. During the throwing, the hot atmosphere in the box is assisted by multiple throwing actions, which can effectively avoid the technical problem of sludge agglomeration.

[0018] 2. In the utility model, the material receiving area of ​​the chain belt assembly is in an unloaded state (facing downward) before receiving the material. In this state, the downward part of the chain belt assembly is exposed to the hot atmosphere and is quickly heated. Then, during the material receiving process, the heat accumulated by itself is quickly transferred to the received sludge, so that the sludge is quickly heated and the sludge drying rate is increased.

[0019] 3. The utility model is equipped with a heat exchanger, which can cool the hot air with moisture in the box. In addition, it can also be combined with a valve to mix the cooled air with residual temperature in the first pipe, thereby regulating the temperature of the hot air entering the box. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is the structural diagram of the sludge drying machine;

[0021] Figure numerals: 1. box body; 2. first opening; 3. second opening; 4. third opening; 5. first tube; 6. second tube; 7. channel; 8. first chain belt assembly; 9. second chain belt assembly; 10. third chain belt assembly; 11. fourth chain belt assembly; 12. fifth chain belt assembly; 13. mesh belt member; 14. first chamber; 15. second chamber; 16. third tube; 17. third chamber. DETAILED DESCRIPTION

[0022] In order to make the technical means, creative features, objectives and effects of the present invention easy to understand, the present invention is further described below in conjunction with specific embodiments and drawings, but the following embodiments are only preferred embodiments of the present invention, not all. Based on the embodiments in the implementation mode, other embodiments obtained by those skilled in the art without creative work are all within the protection scope of the present invention.

[0023] The specific embodiments of the present utility model are described below in conjunction with the accompanying drawings.

[0024] Example 1

[0025] In this embodiment, a sludge dryer is proposed. Please refer to Figure 1 The sludge drying machine includes a box body 1 and a plurality of chain belt assemblies arranged in the box body 1.

[0026] Further description, regarding the box 1, as Figure 1 As shown, there is a first opening 2 at the upper left corner, that is, the top of the box body 1, and a second opening 3 at the lower right corner, that is, the tail of the box body 1. It should be noted that the first opening 2 is the sludge inlet and the second opening 3 is the sludge outlet.

[0027] To further explain, there are multiple chain belt components in the box body 1, and the multiple chain belt components are respectively a first chain belt component 8 closest to the top of the box body 1, a second chain belt component 9 below the first chain belt component 8, a third chain belt component 10 below the second chain belt component 9, a fourth chain belt component 11 below the third chain belt component 10, and a fifth chain belt component 12 below the fourth chain belt component 11.

[0028] See also Figure 1 , the first chain belt assembly 8 rotates clockwise, the second chain belt assembly 9 rotates counterclockwise, the third chain belt assembly 10 rotates clockwise, the fourth chain belt assembly 11 rotates counterclockwise, and the fifth chain belt assembly 12 rotates clockwise.

[0029] Further explanation, such as Figure 1 As shown, the second belt assembly 9 is offset to the right relative to the first belt assembly 8, the third belt assembly 10 is offset to the left relative to the second belt assembly 9, the fourth belt assembly 11 is offset to the right relative to the third belt assembly 10, and the fifth belt assembly 12 is offset to the left relative to the fourth belt assembly 11.

[0030] To further explain, the offset portion between any chain belt assembly and the adjacent chain belt assembly constitutes a material connection area of ​​the chain belt assembly. In addition, the conveying direction of any chain belt assembly is opposite to that of the adjacent chain belt assembly.

[0031] by Figure 1 For reference, the sludge transported by the first chain belt assembly 8 will be thrown to the second chain belt assembly 9 at the tail, and so on, the sludge transported by the second chain belt assembly 9 will be thrown to the third chain belt assembly 10 at the tail, the third chain belt assembly 10 will transfer the sludge to the fourth chain belt assembly 11, and the fourth chain belt assembly 11 will transfer the sludge to the fifth chain belt assembly 12.

[0032] See also Figure 1 There is a channel 7 in the interlayer of each chain belt assembly, and the channel 7 can transport hot air into the interlayer of the chain belt assembly, so that the hot air transfers heat from bottom to top to the sludge laid on the chain belt assembly.

[0033] Further explanation, such as Figure 1 As shown, the box body 1 is equipped with a first pipe 5 and a second pipe 6 which is connected to each channel 7 in a one-to-one correspondence. In addition, the source of hot air in the first pipe 5 includes but is not limited to boiler heat, kiln heat, etc.

[0034] From the above, it can be determined that the sludge transported by the first chain belt assembly 8 undergoes multiple throwings, during which the sludge itself has a dispersing action, which can effectively stir the sludge and prevent the sludge from being compacted.

[0035] The material receiving area of ​​the chain belt assembly is in an unloaded state (facing downward) before receiving the material. In this state, the downward part of the chain belt assembly is exposed to the hot atmosphere and is quickly heated. During the material receiving process, the heat accumulated in the chain belt assembly is quickly transferred to the received sludge, causing the sludge to heat up quickly and increase the sludge drying rate.

[0036] In this embodiment, the chain belt assembly has a gap for the flow of hot air, and the gap can also be a channel for the sludge to fall. Accordingly, a mesh belt member 13 is arranged below the fifth chain belt assembly 12 closest to the bottom of the box body 1. The mesh belt member 13 is consistent with the conveying direction of the fifth chain belt assembly 12. In this way, the sludge falling from the chain belt assembly will be received by the mesh belt member 13, and then transferred to the second opening 3 under the same-direction conveyance of the mesh belt member 13 and the fifth chain belt assembly 12.

[0037] In this embodiment, a heat exchanger is also provided. Figure 1 As shown, the heat exchanger includes a first chamber 14 , a second chamber 15 and a third chamber 17 located on both sides of the first chamber 14 , wherein a plurality of third tubes 16 connecting the second chamber 15 and the third chamber 17 are arranged in the first chamber 14 .

[0038] To further illustrate, the cooling medium enters the third pipe 16 from the second chamber 15 and is then discharged from the third chamber 17. The hot air with moisture in the box 1 is discharged from the third pipe 16. Figure 1 The third opening 4 of the box body 1 shown in the figure enters the first chamber 14 through a pipe to be cooled, and then enters the first pipe 5 through another pipe after cooling, and mixes with the hot air entering the first pipe 5.

[0039] To further explain, the first chamber 14 is equipped with a pipe for discharging condensed water, and the pipe connecting the first chamber 14 and the first pipe 5 is equipped with a valve, which can control the flow rate of air with residual temperature entering the first pipe 5. Specifically, the temperature of the hot air in the kiln fluctuates. To prevent the temperature fluctuation from affecting the sludge drying quality, the temperature of the hot air in the first pipe 5 can be adjusted by increasing or decreasing the flow rate of the hot air with residual temperature entering the first pipe 5. In addition, the air with residual temperature flows back to the box body 1, which can improve the heat utilization efficiency and meet the requirements of energy saving and environmental protection.

[0040] The operation description of the plurality of chain belt components and the mesh belt member 13 is as follows: Figure 1 For reference, each chain belt assembly and mesh belt member 13 are supported by two rollers, wherein one of the two rollers is chain-driven or shaft-driven with the transmission component. Of course, the two rollers can also be connected to the transmission component at the same time, but it should be noted that the two rollers need to be driven in the same direction, and the driven rotation speed must also remain consistent.

[0041] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0042] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A sludge dryer, comprising a housing having an inlet and an outlet, characterized in that: It also includes a plurality of chain belt assemblies stacked in the box body, wherein the conveying direction of any chain belt assembly is opposite to that of an adjacent chain belt assembly, and any chain belt assembly is offset relative to the adjacent chain belt assembly, and the offset portion constitutes a material receiving area; When each chain belt assembly operates independently, the sludge entering the chain belt assembly through the inlet is thrown to the material receiving area of ​​the adjacent chain belt assembly during the conveying process, and is transferred to the outlet under the repeated throwing of multiple chain belt assemblies; it also includes a channel for conveying hot air to the interlayer of each chain belt assembly.

2. The sludge drying machine according to claim 1, characterized in that: There is also a mesh belt part in the box body, which is below the chain belt assembly closest to the bottom of the box, and the conveying direction of the mesh belt part is consistent with that of the chain belt assembly.

3. The sludge drying machine according to claim 2, characterized in that: The mesh belt and the chain belt assembly closest to the bottom of the box transport the drying sludge to the box outlet.

4. The sludge drying machine according to claim 1, characterized in that: It also includes a heat exchanger connected to the box body, which cools the hot air with moisture entering the heat exchanger from the box body and returns the cooled air with residual temperature to the channel.

5. The sludge drying machine according to claim 4, characterized in that: Also included is a valve for controlling the flow of air with residual temperature into the channel.

6. The sludge drying machine according to claim 5, characterized in that: The air with residual temperature mixes with the hot air and enters the passage.

7. The sludge drying machine according to claim 6, characterized in that: Sources of hot air include, but are not limited to, furnace heat and boiler heat.

8. The sludge drying machine according to claim 4, characterized in that: The condensed water generated after the hot air containing moisture is cooled is discharged through the heat exchanger.

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