Sludge drying roller

Abstract

The invention relates to a sludge drying drum which comprises a drum body and flow deflectors, and particularly, the flow deflectors comprise arc-shaped sheet body groups and dispersion sheet body groups. Based on the discontinuous and spiral track layout of the flow deflectors, the time for heat exchange of materials in the drum body is prolonged, sludge can be thrown away to increase the heat exchange contact area, meanwhile, the formed spiral flow deflector layout can convey products to the discharging end so as to meet the requirement for sludge drying in the movement process of the drum, and in addition, the spiral flow deflectors are arranged in the drum body, so that the drying efficiency of the drum is improved. The structure is simple, implementation is convenient, the formed length and occupied space are small, and the practicability of the roller is improved.

Description

Technical Field

[0001] The invention belongs to the field of sludge processing equipment, and in particular relates to a sludge drying drum. Background Art

[0002] Sludge drying is the process of removing most of the water content from sludge through filtration or evaporation. This process aims to reduce the volume and weight of sludge for subsequent treatment and resource utilization. Sludge drying not only helps to improve the environmental characteristics of sludge, but also significantly improves its treatment efficiency and economic benefits.

[0003] At present, for evaporation, it is mainly heated by a drum, and then the generated hot air is recovered for energy to complete the drying of the sludge in motion.

[0004] However, during the heating process, the spiral guide blades inside the drum push the sludge forward against the drum wall to maintain heat exchange. Although the sludge is heated by contact, it has the following defects:

[0005] 1) Since the sludge can stay in the drum for a short time after spiral diversion, if you want to heat it for a longer time, you must lengthen the drum, which not only increases the space occupied by the equipment, but also increases the difficulty of heating the drum itself;

[0006] 2) In the guidance of spiral diversion, the probability of sludge turning over is relatively low, which makes it difficult to change the heat exchange contact surface formed by the sludge, thereby reducing the efficiency and quality of sludge drying. Summary of the invention

[0007] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide an improved sludge drying drum.

[0008] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0009] A sludge drying drum comprises a drum body with a feed end and a discharge end, and a guide plate formed inside the drum body, in particular, the guide plate comprises an arcuate plate group and a dispersed plate group, wherein the arcuate plate group comprises a plurality of arcuate segments which are intermittently distributed along a first spiral track based on the center line of the drum body; the dispersed plate group comprises dispersed monomers which are distributed one by one along a second spiral track based on the center line of the drum body, wherein the first spiral track and the second spiral track are distributed in the same direction and at staggered intervals; the coordination between the arcuate segments and the dispersed monomers can scatter the sludge toward the middle of the drum body and gradually transmit it to the discharge end.

[0010] Preferably, the first spiral track is a single spiral line; the second spiral track is a double spiral line, wherein the starting point and the end point of the single spiral line and the double spiral line are arranged in a corresponding direction. The multi-spiral layout is adopted, and the sludge can be pushed from the discharge end regardless of the scattering effect.

[0011] According to a specific implementation and preferred aspect of the present invention, the guide vanes are distributed in the barrel body in the form of three relatively spaced spirals formed between single spiral lines and double spiral lines. Under the premise of satisfying the segmented dispersion, the spiral forward push is implemented, so that the sludge stays in the barrel body for a long time and forms a large contact area, which is more conducive to the implementation of sludge drying during movement.

[0012] Preferably, the double helix is ​​arranged between every two adjacent arc-shaped segments, so that the formed segment has at least one group of corresponding spirally arranged dispersion monomers to flip and disperse the soil. In this example, the arc-shaped segment at the feed end is located on the outside of the dispersion monomer, and the arc-shaped segment at the discharge end is located on the inside of the dispersion monomer. There is a reason for this layout, because when the sludge just enters, it needs to be guided, so the arc-shaped segment is in front; similarly, when the sludge is discharged from the barrel body, it needs to be thrown outward, so the dispersion monomer is used at the back.

[0013] Furthermore, multiple dispersed monomers are distributed along the double helix line in a staggered manner in the circumferential direction of the barrel body. This creates a good scattering effect. In some specific embodiments, multiple dispersed monomers are aligned in the length direction of the barrel body and divided into multiple rows, wherein the multiple rows of dispersed monomers are distributed at intervals in the circumferential direction of the barrel body.

[0014] According to a specific implementation and preferred aspect of the present invention, each dispersed monomer includes a base plate extending radially along the barrel body and extending from the feed end to the discharge end, a first folding plate located at the end of the base plate away from the barrel body and bent toward the inner wall of the barrel body, and a second folding plate located at the side of the base plate close to the feed end and bent toward the discharge end, wherein the base plate, the first folding plate, the second folding plate and the inner wall of the corresponding barrel body form a mud turning spoon area, and the sludge is scattered in the middle of the barrel body during the rotation of multiple mud turning spoon areas. In short, the segmented soil is turned synchronously by using the turning spoon mode, thereby increasing the heat exchange contact area of ​​the soil.

[0015] Preferably, the mud turning scoop area is formed in multiple rows in the circumferential direction of the barrel body, wherein the radial extension length of the substrate of each row of mud turning scoop area is equal. Alternatively, the mud turning scoop area is formed in multiple rows in the circumferential direction of the barrel body, wherein the radial extension length of the substrate of each row of mud turning scoop area is different, and is divided into a short diameter group and a long diameter group, wherein the short diameter group and the long diameter group are relatively staggered and spaced, and the short diameter group has two rows of mud turning scoop areas, and the long diameter group also has two rows of mud turning scoop areas, while maintaining the long and short interval distribution.

[0016] In addition, the plurality of arc-shaped segments are divided into at least two rows, wherein the arc-shaped segments in each row are kept side by side and distributed at equal intervals in the length direction of the cylinder body.

[0017] Furthermore, the rows of arc-shaped segments are staggered at equal distances in the circumferential direction of the cylinder body about the center line of the cylinder body.

[0018] Due to the implementation of the above technical solution, the present invention has the following advantages compared with the prior art:

[0019] During the heating process of the existing drum, the sludge can stay in the drum for a short time after the spiral diversion. Therefore, if a longer heating time is desired, the drum must be lengthened, which not only increases the space occupied by the equipment, but also increases the difficulty of heating the drum itself. At the same time, in the guidance of the spiral diversion, the probability of the sludge itself flipping is relatively low, resulting in the heat exchange contact surface formed by the sludge being difficult to change, thereby reducing the efficiency and quality of sludge drying, etc. The present application cleverly solves the various deficiencies of the existing structure by overall design of the structure of the sludge drying drum. When the sludge drying drum is used for sludge drying, after the sludge enters the drum body from the feed end, the sludge is segmented and scattered toward the middle under the joint action of the arc-shaped sheet group and the dispersion sheet group, and is gradually transmitted to the discharge end under the spiral guide. Therefore, compared with the existing structure, the present invention is based on the discontinuous and spiral trajectory layout of the guide vanes, which not only prolongs the time for the material to exchange heat in the drum body, but also can scatter the sludge to increase the heat exchange contact area. At the same time, the spiral guide vane layout formed can transmit the product to the discharge end to meet the needs of the drum to implement sludge drying during movement. In addition, the structure is simple, the implementation is convenient, and the length and occupied space are small, which increases the practicality of the drum. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments:

[0021] Figure 1 This is a schematic diagram of the structure of the sludge drying drum in this embodiment;

[0022] Figure 2 for Figure 1 A schematic diagram of the main view;

[0023] Figure 3 for Figure 2 Schematic diagram of the left side;

[0024] Figure 4 for Figure 2 AA section view;

[0025] Figure 5 for Figure 2 A magnified schematic diagram of the cross-section in the middle BB direction;

[0026] Wherein: 1. barrel body; 10. feed end; 11. discharge end;

[0027] 2. Guide plate; 20. Arc-shaped plate group; 200. Arc-shaped segment body; 21. Dispersed plate group; 210. Dispersed monomer; a. Base plate; b. First folding plate; c. Second folding plate; S. Mud turning spoon area; I. Short diameter group; II. Long diameter group. DETAILED DESCRIPTION

[0028] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0029] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0030] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0031] In the present invention, unless otherwise clearly defined and specified, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] In the invention, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, or “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, or “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0033] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0034] like Figures 1 to 5 As shown, the sludge drying drum involved in this embodiment includes a drum body 1 having a feed end 10 and a discharge end 11 , and a guide plate 2 formed inside the drum body 1 .

[0035] Specifically, the left end of the barrel body 1 is the feed end 10, and the right end is the discharge end. The guide plate 2 includes an arc-shaped plate group 20 and a dispersion plate group 21, wherein the arc-shaped plate group 20 includes a plurality of arc-shaped segments 200 intermittently distributed along a first spiral track based on the center line of the barrel body 1; the dispersion plate group 21 includes dispersion monomers 210 distributed one by one along a second spiral track based on the center line of the barrel body 1.

[0036] In some specific embodiments, the first spiral track and the second spiral track are distributed in the same direction and at staggered intervals; the arc segment 200 and the dispersed monomer 210 cooperate to scatter the sludge toward the middle of the barrel body 1 and gradually transmit it to the discharge end 11.

[0037] In this example, the first spiral track is a single spiral line; the second spiral track is a double spiral line, wherein the starting point and the end point of the single spiral line and the double spiral line are set in a corresponding direction. By adopting a multi-spiral layout, the sludge can be pushed from the discharge end regardless of the scattering effect. At the same time, the guide plate 2 is distributed in the barrel body with three spiral intervals between the single spiral line and the double spiral line. Under the premise of satisfying the segmented scattering, the spiral forward push is implemented, so that the sludge stays in the barrel body for a long time and the contact area formed is large, which is more conducive to the implementation of sludge movement drying. The double spiral line is arranged between each adjacent two arc-shaped segments 200, so that the segment formed has at least a group of corresponding spirally arranged dispersion monomers 210 for turning and dispersing the soil. In this example, the arc-shaped segment 200 of the feed end 10 is located on the outside of the dispersion monomer 210, and the arc-shaped segment 200 of the discharge end 11 is located on the inside of the dispersion monomer 210. There is a reason for this layout, because when the sludge just enters, it needs to be guided, so the arc-shaped segment is in front; similarly, when the sludge is discharged from the barrel body, it needs to be thrown outward, so the dispersed monomer is used in the back. Furthermore, multiple dispersed monomers 210 are distributed along the double helix line and staggered in the circumferential direction of the barrel body 1. This creates a good scattering effect. In some specific embodiments, multiple dispersed monomers 210 are aligned in the length direction of the barrel body 1 and are divided into multiple rows, wherein multiple rows of dispersed monomers 210 are distributed at intervals in the circumferential direction of the barrel body 1.

[0038] In some specific embodiments, the plurality of arc segments 200 are divided into at least two rows, wherein the arc segments 200 of each row are arranged side by side and are equally spaced in the length direction of the barrel body 1. The plurality of rows of arc segments 200 are staggered at equal distances in the circumferential direction of the barrel body 1 along the center line of the barrel body 1. Each dispersed monomer 210 includes a substrate a extending along the barrel body diameter 1 and extending from the feed end 10 to the discharge end 11, a first folding plate b located at the end of the substrate a away from the barrel body 1 and bent toward the inner wall of the barrel body 1, and a second folding plate c located at the side of the substrate a close to the feed end 10 and bent toward the discharge end 11, wherein a mud turning scoop area S is formed between the substrate a, the first folding plate b, and the second folding plate c; or a mud turning scoop area S is formed between the substrate a, the first folding plate b, the second folding plate c and the inner wall of the corresponding barrel body 1, and the sludge is scattered in the middle of the barrel body 1 during the rotation of the plurality of mud turning scoop areas S. In short, the segmented soil is turned synchronously by using a flipping spoon mode, thereby increasing the heat exchange contact area of ​​the soil.

[0039] In this example, the mud turning spoon area S is formed in multiple rows in the circumferential direction of the barrel body 1, and the radial extension length of the substrate a of each row of the mud turning spoon area S is different, and it is divided into a short diameter group I and a long diameter group II, wherein the short diameter group I and the long diameter group II are relatively staggered and distributed, and the short diameter group I has two rows of mud turning spoon areas, and the long diameter group II also has two rows of mud turning spoon areas, while maintaining the long and short interval distribution. (The mud turning spoon area S is formed in multiple rows in the circumferential direction of the barrel body 1, wherein the radial extension length of the substrate a of each row of the mud turning spoon area S is equal.)

[0040] In summary, when the sludge drying drum is used for sludge drying, after the sludge enters the drum body from the feed end, the sludge is segmented and scattered in the middle under the joint action of the arc-shaped sheet group and the dispersion sheet group, and is gradually transmitted to the discharge end under the spiral guide. Therefore, compared with the existing structure, the present invention is based on the discontinuous and spiral trajectory layout of the guide vane, which not only prolongs the time for the material to exchange heat in the drum body, but also can scatter the sludge to increase the heat exchange contact area. At the same time, the spiral guide vane layout formed can transmit the product to the discharge end to meet the needs of the drum for sludge drying during movement. In addition, the structure is simple, the implementation is convenient, and the length and space occupied are small, which increases the practicality of the drum; secondly, a multi-spiral layout is adopted, and the sludge can be pushed from the discharge end regardless of the scattering effect. At the same time, the guide vanes are distributed in the drum body with three spiral intervals formed by single spiral lines and double spiral lines. On the premise of satisfying segmented scattering, spiral forward pushing is implemented, so that the sludge stays in the drum body for a long time and the contact area formed is large, which is more conducive to the implementation of sludge drying during movement; thirdly, the arc segment body at the feed end is located on the outside of the dispersed monomer, and the discharge The arc segment at the end is located on the inner side of the dispersion monomer, because when the sludge just enters, it needs to be guided, so the arc segment is in front; similarly, when the sludge is discharged from the barrel body, it needs to be thrown outward, so the dispersion monomer is used at the back; fourthly, multiple dispersion monomers are distributed along the double helix line in a staggered manner in the circumferential direction of the barrel body, so that the dispersion effect is good, and multiple dispersion monomers are aligned in the length direction of the barrel body and divided into multiple rows, wherein multiple rows of dispersion monomers are distributed at intervals in the circumferential direction of the barrel body; fifthly, the mode of turning over the spoon is used to synchronously flip the segmented soil, thereby increasing the heat exchange contact area of ​​the soil, and turning the mud There are multiple rows of spoon areas formed in the circumferential direction of the barrel body, and the radial extension lengths of the base plates of each row of mud-turning spoon areas are different, and they are divided into short diameter group and long diameter group, wherein the short diameter group and the long diameter group are relatively staggered and distributed, and the short diameter group has two rows of mud-turning spoon areas, and the long diameter group also has two rows of mud-turning spoon areas, while maintaining the long and short interval distribution; in the sixth aspect, multiple arc segments are divided into at least two rows, wherein each row of arc segments is kept side by side and distributed at equal intervals in the length direction of the barrel body, and multiple rows of arc segments are staggered at equal distances in the circumferential direction of the barrel body with the center line of the barrel body, so that the segmented effect formed is helpful for the mud-turning spoon area to implement the scattering of soil.

[0041] The above detailed description of the present invention is intended to enable persons familiar with the art to understand the contents of the present invention and implement them. It does not limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A sludge drying drum, comprising a drum body having a feed end and a discharge end, and a guide plate formed inside the drum body, characterized in that: The guide plate includes an arc-shaped plate group and a dispersion plate group, wherein the arc-shaped plate group includes a plurality of arc-shaped segments which are intermittently distributed along a first spiral track based on the center line of the barrel body; the dispersion plate group includes dispersion monomers which are distributed one by one along a second spiral track based on the center line of the barrel body, wherein the first spiral track and the second spiral track are distributed in the same direction and at staggered intervals; the arc-shaped segments and the dispersion monomers cooperate to scatter the sludge toward the middle of the barrel body and gradually transmit it to the discharge end.

2. The sludge drying drum according to claim 1, characterized in that: The first spiral track is a single spiral line; the second spiral track is a double spiral line, wherein the starting points and end points of the single spiral line and the double spiral line are arranged in a corresponding direction.

3. The sludge drying drum according to claim 2 is characterized in that: The guide vanes are distributed in the cylinder body in the form of three spirals with single spiral lines and double spiral lines forming relatively spaced intervals.

4. The sludge drying drum according to claim 3 is characterized in that: The double helix is ​​arranged between every two adjacent arc-shaped segments; and / or the arc-shaped segments at the feed end are located outside the dispersed monomers, and the arc-shaped segments at the discharge end are located inside the dispersed monomers.

5. The sludge drying drum according to claim 4 is characterized in that: A plurality of dispersed monomers are distributed along the double helix line in a staggered manner in the circumferential direction of the barrel body.

6. The sludge drying drum according to claim 5, characterized in that: A plurality of dispersed monomers are aligned in the length direction of the barrel body and divided into a plurality of rows, wherein the dispersed monomers in the plurality of rows are spaced apart and distributed in the circumferential direction of the barrel body.

7. The sludge drying drum according to any one of claims 1 to 6, characterized in that: Each of the dispersing monomers includes a base plate extending radially along the barrel body and extending from the feed end to the discharge end, a first folding plate located at the end of the base plate away from the barrel body and bent toward the inner wall of the barrel body, and a second folding plate located at the side of the base plate close to the feed end and bent toward the discharge end, wherein a mud turning scoop area is formed between the base plate, the first folding plate, and the second folding plate; or a mud turning scoop area is formed between the base plate, the first folding plate, the second folding plate and the corresponding inner wall of the barrel body, and the sludge is scattered in the middle of the barrel body during the rotation of multiple mud turning scoop areas.

8. The sludge drying drum according to claim 7, characterized in that: The mud turning scoop areas are formed in multiple rows in the circumferential direction of the barrel body, wherein the radial extension lengths of the substrates of the mud turning scoop areas in each row are equal; or, the mud turning scoop areas are formed in multiple rows in the circumferential direction of the barrel body, wherein the radial extension lengths of the substrates of the mud turning scoop areas in each row are different, and are divided into short diameter groups and long diameter groups, wherein the short diameter groups and the long diameter groups are distributed with relative staggered intervals.

9. The sludge drying drum according to claim 1, characterized in that: The plurality of arc-shaped segments are divided into at least two rows, wherein the arc-shaped segments in each row are arranged side by side and distributed at equal intervals in the length direction of the barrel body.

10. The sludge drying drum according to claim 9, characterized in that: The multiple rows of arc-shaped segments are staggered at equal distances in the circumferential direction of the barrel body with respect to the center line of the barrel body.

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