Soft sludge granulating device for wet sludge drying system

Abstract

The utility model belongs to the technical field of wet sludge drying, and particularly relates to a sludge soft body granulation device for a wet sludge drying system, which comprises a box body, a herringbone uniform distribution piece and a granulation component, the box body is formed by a group of corresponding long-edge side walls, a group of corresponding short-edge side walls, a corresponding bottom plate and a corresponding top cover in a surrounding manner; the herringbone uniform distribution piece is composed of three rectangular uniform distribution plates, and the included angle between any two adjacent uniform distribution plates is 120 degrees; the granulation assembly comprises a driving motor, a rotating shaft and two paddle assemblies; the sludge soft body granulating device for the wet sludge drying system provided by the utility model is arranged in front of a drying device and is used for granulating wet sludge before the wet sludge enters the drying device, so that the particle size of the wet sludge is reduced, the drying efficiency of the wet sludge is improved, and meanwhile, the drying efficiency of the wet sludge is improved. And the problem of low granulation efficiency easily caused by non-uniform distribution of the wet sludge when the wet sludge is conveyed into the sludge soft body granulation device is also solved.

Description

Technical Field

[0001] This utility model belongs to the field of wet sludge drying technology, specifically relating to a sludge soft granulation device for a wet sludge drying system. Background Technology

[0002] my country has always attached great importance to ecological and environmental protection. Therefore, it is necessary to carry out harmless treatment of the residual sludge generated in the process of municipal and chemical wastewater treatment. In particular, due to the different chemical processes, the residual sludge generated in the process of chemical wastewater treatment is wet sludge. Moreover, the residual sludge may contain organic matter, heavy metals and other substances that are harmful to the environment. This leads to economic and environmental burdens during the loading, unloading, transportation and storage of residual sludge. Therefore, many modern wastewater treatment processes adopt wet sludge drying methods for deep treatment of wet sludge.

[0003] Existing wet sludge drying systems directly transport wet sludge into a drying unit, where it is dried using methods such as electric heating or steam heating. The dried sludge is then transported to subsequent processing units. However, when the wet sludge is transported to the drying unit, it tends to accumulate. Thick accumulations of wet sludge significantly reduce drying efficiency, lowering the overall efficiency of wet sludge treatment and consuming a large amount of energy for heating and drying, thus increasing costs. Utility Model Content

[0004] In view of this, the present invention provides a sludge soft granulation device for a wet sludge drying system, which granulates the wet sludge before it enters the drying device to reduce the particle size of the wet sludge. This aims to improve the drying efficiency of wet sludge while also addressing the problem of uneven distribution of wet sludge when it is transported into the sludge soft granulation device, which can easily lead to low granulation efficiency.

[0005] To achieve the above objectives, the technical solution provided by this utility model is as follows:

[0006] A sludge soft granulation device for a wet sludge drying system includes:

[0007] The box body is rectangular in shape. The box body is composed of a set of corresponding long side walls, a set of short side walls, a corresponding bottom plate and a top cover. A feed port is opened on any of the long side walls. A feed pipe is connected to the feed port and the feed pipe is located on the outside of the box body. It is used to input wet sludge into the sludge soft granulation device.

[0008] A herringbone-shaped uniform distribution component is fixedly installed inside the box body. The herringbone-shaped uniform distribution component is composed of three rectangular uniform distribution plates. The included angle between any two adjacent uniform distribution plates is 120°. In the herringbone-shaped uniform distribution component, the center point of the connection between the three uniform distribution plates coincides with the midpoint of the feed inlet, which evenly divides the feed inlet into three parts to separate the wet sludge transported through the feed pipe into three flow paths.

[0009] A granulation assembly is located below the herringbone-shaped uniformly distributed component. The granulation assembly includes a drive motor mounted on the outside of any short side wall of the housing via a support assembly. The output shaft of the drive motor extends through the short side wall into the housing. The end of the output shaft is connected to a rotating shaft. Three circular connecting discs are fixedly connected to the rotating shaft, and the diameter of each connecting disc is equal to the distance between a set of long side walls of the housing. Based on this, the three connecting discs divide the rotating shaft located inside the housing into two equal segments, and each segment of the rotating shaft is equipped with a paddle assembly. Each paddle assembly includes two connecting plates symmetrically arranged on the outer circumference of the rotating shaft. Each connecting plate has an extrusion column on the side away from the rotating shaft. When the drive motor moves, the rotating shaft drives the two paddle assemblies to rotate around the rotating shaft, causing the two extrusion columns to rotate around the rotating shaft to form a cylindrical rotation trajectory. The diameter of this cylindrical rotation trajectory is equal to the distance between a set of long side walls of the housing.

[0010] In addition, the granulation assembly also includes a granulation plate located below the paddle assembly. The granulation plate has an arc-shaped structure, and the arc of the granulation plate matches the cylindrical rotation trajectory formed by the paddle assembly during movement. Furthermore, the granulation plate is uniformly and densely distributed with a number of granulation holes.

[0011] Preferably, in the housing, the top cover is detachably connected to a set of long side walls and a set of short side walls. In addition, an operating door is provided on any one of the long side walls, and the operating door is located above the granulation plate. One end of the operating door is rotatably connected to the long side wall via a hinge, and the other end of the operating door is connected to the long side wall via a locking mechanism.

[0012] Preferably, the locking mechanism includes a locking rod, one end of which is rotatably connected to the operating door via a pivot. Furthermore, the locking mechanism also includes a locking ring disposed on the long sidewall, the upper end of which has an opening. The locking rod is rotated through the pivot into the locking ring via the opening.

[0013] Furthermore, the support assembly includes a support plate disposed on the short side wall, and a support frame is provided on the top of the support plate. The support frame cooperates with the drive motor to support the drive motor.

[0014] Furthermore, inside the housing, a set of arc-shaped support portions are provided on a set of short side walls to support the granulation plate.

[0015] Preferably, the diameter of the granulation holes on the granulation plate is 10 mm.

[0016] Preferably, the sludge soft granulation device further includes a conveyor belt disposed below the granulation plate. The conveyor belt passes through the box body through two transport holes corresponding to a set of short side walls. In this case, the width of the conveyor belt is equal to the distance between a set of long side walls of the box body.

[0017] The beneficial effects of this utility model are as follows:

[0018] This invention adds a sludge soft granulation device to the existing wet sludge drying system. While the wet sludge is fed into the housing through the feed pipe, a herringbone-shaped distribution plate at the feed inlet divides the sludge into three flow paths. This allows some of the wet sludge to flow through the distribution plate to the sides of the feed inlet and fall onto the granulation component below. This prevents the wet sludge from concentrating and falling directly below the feed inlet after flowing out, thus avoiding the situation where only the portion of the granulation component directly below the feed inlet performs the granulation function, affecting the efficiency of the sludge soft granulation device and consequently the overall efficiency of the wet sludge drying system.

[0019] Furthermore, the granulation assembly, through the cooperation between the paddle assembly and the arc-shaped granulation plate, ensures that all the wet sludge falling into the granulation assembly is squeezed onto the granulation plate by the rotating paddle assembly using the extrusion column. The wet sludge is then granulated into particles with a diameter of 10mm through the granulation holes on the granulation plate. The granulated wet sludge falls onto the conveyor belt below the granulation plate and is transported by the conveyor belt to the subsequent drying device. This improves the overall drying efficiency of the wet sludge drying system and reduces the energy consumption for heating and drying per unit time. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0022] Figure 2 This is a front view of a partial structure of the present invention;

[0023] Figure 3 This is a left view of a partial structure of this utility model;

[0024] Figure 4 This is a front view structural diagram of the outer side of the box body in this utility model. Detailed Implementation

[0025] 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.

[0026] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0027] The sludge soft granulation device provided in this technical solution is applied to a wet sludge drying system and is set before the drying device. It is used to soft granulate the wet sludge obtained from the pre-process in the wet sludge drying system and then output it to the drying device for drying. The aim is to improve the working efficiency of the drying device and the overall wet sludge drying system. It should be noted that the wet sludge drying system is a commonly used system for modern chemical wastewater and sludge treatment. The pre-process and drying device mentioned in this application can be found by consulting the prior art.

[0028] Specifically, such as Figure 1 As shown, the sludge soft granulation device for a wet sludge drying system provided by this utility model includes: a box body 1, a herringbone-shaped uniformly distributed component 2, and a granulation component 3.

[0029] like Figure 1-2As shown, the box 1 is generally rectangular. The box 1 is composed of a set of corresponding long side walls 101, a set of short side walls 102, and a corresponding bottom plate and top cover 103. A feed inlet 4 is opened on any one of the long side walls 101. A feed pipe 401 is connected to the feed inlet 4 and is located on the outside of the box 1. The feed pipe 401 is used to feed the wet sludge obtained from the previous process into the sludge soft granulation device through the feed inlet 4.

[0030] like Figure 1-2 As shown, the "V"-shaped uniform distribution component 2 is fixedly installed inside the housing 1. The "V"-shaped uniform distribution component 2 is composed of three rectangular uniform distribution plates 201, wherein the included angle between any two adjacent uniform distribution plates 201 is 120°, and in the "V"-shaped uniform distribution component 2, the center point of the connection between the three uniform distribution plates 201 coincides with the midpoint of the feed inlet 4, which evenly divides the feed inlet 4 into three parts, used to divide the wet sludge conveyed through the feed pipe 401 into three flow paths. The specific structure is as follows. Figure 2 As shown.

[0031] In this technical solution, such as Figure 1-3 As shown, the granulation component 3 is located below the "V"-shaped uniform distribution component 2. The granulation component 3 includes a drive motor 301 located outside any short side wall 102 in the housing 1 via a support component 5. The output shaft 302 of the drive motor 301 passes through the short side wall 102 and extends into the housing 1. The end of the output shaft 302 is connected to a rotating shaft 303. Three circular connecting discs 304 are fixedly connected to the rotating shaft 303. The diameter of each connecting disc 304 is equal to the distance between a set of long side walls 101 of the housing 1. Based on this, the three connecting discs 304 divide the rotating shaft 303 located inside the housing 1 into two segments at equal distances. Each segment of the rotating shaft 303 is provided with a paddle assembly 6. Each paddle assembly 6 includes two connecting plates 601 centrally symmetrically arranged on the outer circumference of the rotating shaft 303. Each connecting plate 601 has an extrusion column 602 on the side away from the rotating shaft 303.

[0032] Based on the above embodiments, the support assembly 5 includes a support plate 501 disposed on the short side wall 102, and a support frame 502 is provided on the top of the support plate 501. The support frame 502 cooperates with the drive motor 301 to support the drive motor 301. In addition, when the drive motor 301 moves, the rotating shaft 303 drives the two paddle assemblies 6 to rotate around the rotating shaft 303, causing the two extrusion columns 602 to rotate around the rotating shaft 303 to form a cylindrical rotation trajectory. The diameter of the cylindrical rotation trajectory is equal to the distance between a set of long side walls 101 of the box body 1.

[0033] Based on the above structure, such as Figure 1-3As shown, the granulation assembly 3 also includes a granulation plate 7 located below the paddle assembly 6. The granulation plate 7 has an arc-shaped structure, and the arc of the granulation plate 7 matches the cylindrical rotation trajectory formed by the paddle assembly 6 during movement. On this basis, a number of granulation holes 701 are evenly and densely distributed on the granulation plate 7, and the diameter of the granulation holes 701 is 10mm.

[0034] At this point, when the two paddle components 6 in the granulation assembly 3 begin to rotate, the wet sludge that is diverted by the "V"-shaped uniform distribution part 2 and falls onto the granulation assembly 3 is squeezed onto the granulation plate 7 by the rotating paddle components 6, and the wet sludge is granulated to a particle size of 10mm by the cooperation of the extrusion column 602 and the granulation hole 701. The "V"-shaped uniform distribution part 2 is designed to prevent the wet sludge from flowing out of the feed inlet 4 and falling to the area directly below the feed inlet 4, which would cause only the part of the granulation assembly 3 located directly below the feed inlet 4 to perform the granulation function, thus affecting the working efficiency of the sludge soft granulation device.

[0035] In this technology and solution, to facilitate the maintenance of the sludge soft granulation device, this application also includes adaptive features for the housing 1, such as... Figure 1 , Figure 4 As shown, the top cover 103 is detachably connected to a set of long sidewalls 101 and a set of short sidewalls 102. Furthermore, an operating door 104 is provided on any one of the long sidewalls 101, and the operating door 104 is located above the granulation plate 7. One end of the operating door 104 is rotatably connected to the long sidewall 101 via a hinge, and the other end of the operating door 104 is connected to the long sidewall 101 via a locking mechanism 8. The locking mechanism 8 includes a locking rod 801. One end is rotatably connected to the operating door 104 via a pivot. In addition, the locking mechanism 8 also includes a locking ring 802 provided on the long side wall 101. The upper end of the locking ring 802 is provided with an opening. The locking rod 801 is rotated through the opening to the inside of the locking ring 802 by the rotation of the pivot, thereby completing the locking between the operating door 104 and the long side wall 101. The staff can also open the operating door 104 to inspect the components inside the box 1.

[0036] Correspondingly, such as Figure 1-3 As shown, inside the housing 1, a set of arc-shaped support parts 105 are provided on a set of short side walls 102. The set of arc-shaped support parts 105 is used to support the granulation plate 7, which is convenient for disassembly when the granulation plate 7 needs to be repaired.

[0037] In this technical solution, such as Figure 1-3As shown, the sludge soft granulation device also includes a conveyor belt 9 located below the granulation plate 7. The conveyor belt 9 passes through the box body 1 through two transport holes 106 corresponding to a set of short side walls 102. In addition, the width of the conveyor belt 9 is equal to the distance between a set of long side walls 101 of the box body 1 to prevent the granulated sludge from falling to the bottom of the box body.

[0038] Specifically, this utility model adds a sludge soft granulation device to the original wet sludge drying system. With the wet sludge being transported into the housing 1 through the feed pipe 401, the wet sludge is divided into three flow paths by the "V"-shaped uniform distribution member 2 located at the feed inlet 4. This allows some of the wet sludge to flow through the uniform distribution plate 201 to the positions on both sides of the feed inlet 4 and fall to the granulation component 3 below. This prevents the wet sludge from flowing out of the feed inlet 4 and falling to the area directly below the feed inlet 4, which would otherwise only allow the granulation component 3 located directly below the feed inlet 4 to perform the granulation function, thus affecting the working efficiency of the sludge soft granulation device and consequently the working efficiency of the entire wet sludge drying system.

[0039] Furthermore, by starting the drive motor 301, and with the paddle assembly 6 and the arc-shaped granulation plate 7 working together, the wet sludge falling onto the granulation assembly 3 can be completely squeezed onto the granulation plate 7 by the rotating paddle assembly 6 using the extrusion column 602. The wet sludge is then granulated to a particle size of 10mm through the granulation holes 701 on the granulation plate 7. The granulated wet sludge falls onto the conveyor belt 9 below the granulation plate 7 and is transported by the conveyor belt 9 to the subsequent drying device. This improves the overall drying efficiency of the wet sludge drying system and reduces the energy consumption for heating and drying per unit time.

[0040] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A sludge soft granulation device for a wet sludge drying system, characterized in that, include: The box body is rectangular in shape. The box body is composed of a set of corresponding long side walls, a set of short side walls, a corresponding bottom plate and a top cover. A feed port is opened on any of the long side walls. A feed pipe is connected to the feed port and the feed pipe is located on the outside of the box body. It is used to input wet sludge into the sludge soft granulation device. A herringbone-shaped uniform distribution component is fixedly installed inside the box body. The herringbone-shaped uniform distribution component is composed of three rectangular uniform distribution plates. The included angle between any two adjacent uniform distribution plates is 120°. In the herringbone-shaped uniform distribution component, the center point of the connection between the three uniform distribution plates coincides with the midpoint of the feed inlet, which evenly divides the feed inlet into three parts to separate the wet sludge transported through the feed pipe into three flow paths. A granulation assembly is located below the "V"-shaped uniformly distributed component. The granulation assembly includes a drive motor mounted on the outside of any short sidewall of the housing via a support assembly. The output shaft of the drive motor extends through the short sidewall into the housing. The end of the output shaft is connected to a rotating shaft. Three circular connecting discs are fixedly connected to the rotating shaft, and the diameter of each connecting disc is equal to the distance between a set of long sidewalls of the housing. Based on this, the three connecting discs divide the rotating shaft located inside the housing into two equal segments, and each segment of the rotating shaft is equipped with a paddle assembly. Each paddle assembly includes two connecting plates symmetrically arranged on the outer circumference of the rotating shaft. Each connecting plate has an extrusion column on the side away from the rotating shaft. When the drive motor moves, the rotating shaft drives the two paddle assemblies to rotate around the rotating shaft, causing the two extrusion columns to rotate around the rotating shaft to form a cylindrical rotation trajectory. The diameter of this cylindrical rotation trajectory is equal to the distance between a set of long sidewalls of the housing. In addition, the granulation assembly also includes a granulation plate located below the paddle assembly. The granulation plate has an arc-shaped structure, and the arc of the granulation plate matches the cylindrical rotation trajectory formed by the paddle assembly during movement. Furthermore, the granulation plate is uniformly and densely distributed with a number of granulation holes.

2. The sludge soft granulation device for a wet sludge drying system according to claim 1, characterized in that: In the housing, the top cover is detachably connected to a set of long side walls and a set of short side walls. In addition, an operating door is provided on any one of the long side walls. The operating door is located above the granulation plate. One end of the operating door is rotatably connected to the long side wall via a hinge, and the other end of the operating door is connected to the long side wall via a locking mechanism.

3. The sludge soft granulation device for a wet sludge drying system according to claim 2, characterized in that: The locking mechanism includes a locking rod, one end of which is rotatably connected to the operating door via a pivot. In addition, the locking mechanism also includes a locking ring disposed on the long side wall. The upper end of the locking ring has an opening. The locking rod is rotated through the opening into the locking ring by the rotation of the pivot.

4. The sludge soft granulation device for a wet sludge drying system according to claim 3, characterized in that: The support assembly includes a support plate disposed on the short side wall, and a support frame is provided on the top of the support plate. The support frame cooperates with the drive motor to support the drive motor.

5. The sludge soft granulation device for a wet sludge drying system according to claim 4, characterized in that: Inside the box, a set of arc-shaped support parts are provided on a set of short side walls, and the set of arc-shaped support parts are used to support the granulation plate.

6. The sludge soft granulation device for a wet sludge drying system according to claim 5, characterized in that: The diameter of the granulation holes on the granulation plate is 10 mm.

7. The sludge soft granulation device for a wet sludge drying system according to claim 6, characterized in that: The sludge soft granulation device also includes a conveyor belt located below the granulation plate. The conveyor belt passes through the box body through two transport holes corresponding to a set of short side walls. The width of the conveyor belt is equal to the distance between a set of long side walls of the box body.

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