Barrel for discharging sludge

Abstract

The utility model relates to the technical field of sludge conveying, specifically is a kind of rod-shaped sludge with unloading chute pipe, the inside adjustable setting of unloading chute pipe has two conveying structures and flow guide structure, the flow guide structure is located at the export end of unloading chute pipe, two The conveying structure is symmetrically arranged and is distributed one above another, one of the conveying structure is located in the middle of unloading chute pipe, another conveying structure is located at the import end of unloading chute pipe.The rod-shaped sludge with unloading chute pipe of the utility model, when conveying rod-shaped sludge, two conveying structures form "double buffering", can reduce the impact injury of rod-shaped sludge, reduce the generation of noise simultaneously, flow guide structure can accurately control the falling trajectory and drop point of rod-shaped sludge, effectively avoid the rod-shaped sludge to appear scattering, running material phenomenon.

Description

Technical Field

[0001] This utility model relates to the field of sludge conveying technology, specifically to a rod-shaped sludge unloading chute. Background Technology

[0002] In the process of municipal sludge transportation, sludge can be divided into wet sludge, dry sludge, and slag according to its moisture content. Each type of sludge has different forms. For example, wet sludge can be divided into flocculent, strip-shaped, pasty, and granular forms; dry sludge can be divided into powder, rod-shaped, and granular forms; and slag can be divided into block-shaped, granular, and powdery forms. Dry sludge usually refers to sludge products that have undergone deep dewatering, drying, or pyrolysis processes, resulting in a significantly reduced moisture content (generally ≤60%, and in some cases as low as below 10%). Rod-shaped sludge generally refers to sludge with a moisture content reduced to 15%-20% after drying, which is formed into rod-shaped structures of different diameters using a pelletizing machine. This rod-shaped sludge is hard, with a smooth or slightly textured surface and low viscosity, but it is easily broken and powdered upon impact with sharp edges. It is also prone to rolling during transportation, requiring high standards not only for conveying but also for unloading and feeding.

[0003] Centrifugal discharge is commonly used in unloading chutes. During the unloading process, the rod-shaped sludge collides with the chute shell, which not only easily causes the sludge particles to break but also generates significant impact noise. Furthermore, when the rod-shaped sludge is conveyed to the final discharge section and enters the feed inlet of the next-stage belt conveyor, it experiences a large impact load due to its own weight. This impact can not only cause structural damage or component wear to the next-stage belt conveyor but also frequently leads to sludge spillage and leakage, severely impacting the stability of the entire conveying system.

[0004] Generally, some unloading chutes adopt a straight cylindrical design, collecting material from the outlet of the previous belt conveyor and dropping it directly into the inlet of the next belt conveyor, thus minimizing the spillage of rod-shaped sludge. Alternatively, some unloading chutes feature an inner wear-resistant liner for enhanced wear resistance or cushioning, preventing the rod-shaped sludge from being broken by impact. Others have noise-reducing cotton pasted on the outer wall. Currently, existing unloading chute designs often only address one problem related to rod-shaped sludge; they cannot simultaneously solve the problems of breakage, noise, and spillage during unloading. Therefore, there is an urgent need for a new unloading chute specifically designed for rod-shaped sludge to address these issues. Utility Model Content

[0005] To address the technical problems of existing unloading chutes failing to completely resolve breakage, noise, and spillage issues during the unloading of rod-shaped sludge, this invention provides an unloading chute for rod-shaped sludge. During the transport of rod-shaped sludge, two conveying structures form a "double buffer," reducing impact damage and noise generation. The guiding structure precisely controls the trajectory and landing point of the rod-shaped sludge, effectively preventing spillage and runaway.

[0006] This utility model provides a rod-shaped sludge unloading chute. The unloading chute is internally adjustable and equipped with a flow guiding structure and two conveying structures. The flow guiding structure is located at the outlet end of the unloading chute, and the two conveying structures are symmetrically arranged and distributed one above the other. One of the conveying structures is located in the middle of the unloading chute, and the other conveying structure is located at the inlet end of the unloading chute.

[0007] Furthermore, the guiding structure includes two fixed plates and flexible guide plates. The two fixed plates are symmetrically arranged at the outlet end of the discharge chute, with their lower parts inclined and extending outside the discharge chute. The two flexible guide plates are adjustablely arranged below the two fixed plates, also inclined and located outside the discharge chute. The rod-shaped sludge enters the belt of the next-stage belt conveyor through the two flexible guide plates. The two flexible guide plates precisely control the trajectory and landing point of the rod-shaped sludge, ensuring that it accurately and stably enters the middle position of the next-stage belt conveyor, thereby preventing spillage or runoff of the rod-shaped sludge during subsequent conveying.

[0008] Furthermore, each of the fixed plates is provided with a first fixing hole, and each of the flexible guide plates is provided with a first strip-shaped hole. A first bolt passes through the first strip-shaped hole and the first fixing hole and is fixedly connected to a first nut. The flexible guide plate can change its installation position on the fixed plate through the first strip-shaped hole.

[0009] Furthermore, each of the conveying structures includes a fixed seat, a first sound insulation plate, a first wear-resistant liner, and a grid plate. The two fixed seats are adjustablely arranged in the middle and at the inlet end of the unloading chute. The two fixed seats are symmetrically arranged and distributed one above the other. The two first sound insulation plates are respectively fixedly arranged on the inclined surfaces of the two fixed seats. The two first wear-resistant liners are respectively fixedly arranged on the two first sound insulation plates. The two grid plates are respectively fixedly arranged on the two first wear-resistant liners. The two first sound insulation plates, the first wear-resistant liners, and the grid plates are arranged at an angle.

[0010] Furthermore, a second slotted hole is provided on the pipe wall at the middle and inlet ends of the discharge chute, and a second fixing hole is provided on each of the fixed seats. The second bolt passes through the second slotted hole and the second fixing hole and is fixedly connected to the second nut. The fixed seat can change its installation position at the middle and inlet ends of the discharge chute through the second slotted hole. By adjusting the position of the fixed seat, the height of the grid plate can be adjusted to ensure that the grid plate can always reduce the kinetic energy of the rod-shaped sludge during the falling process.

[0011] Furthermore, an annular sound insulation plate is fixedly installed on the inner wall of the unloading chute, and an annular wear-resistant liner is fixedly installed on the annular sound insulation plate. The annular wear-resistant liner improves the resistance of the inner wall of the unloading chute to friction and impact of rod-shaped sludge, reducing wear; the annular sound insulation plate absorbs impact energy and reduces the noise generated by the collision between the rod-shaped sludge and the inner wall, achieving a dual optimization of "wear resistance + noise reduction".

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] This utility model's unloading chute for rod-shaped sludge features a "double buffer" formed by two conveying structures during the transport of rod-shaped sludge. When the unloaded rod-shaped sludge falls onto the grating plate later, most of its impact force is absorbed by the rod-shaped sludge within the grating plate's mesh, reducing both breakage and noise. Specifically, the first wear-resistant liner enhances the grating plate's resistance to friction and impact from the rod-shaped sludge, while the first sound-insulating plate absorbs impact energy, reducing noise generated by the collision between the unloaded rod-shaped sludge and the rod-shaped sludge within the grating plate's mesh. The guiding structure precisely controls the trajectory and landing point of the rod-shaped sludge. Specifically, the rod-shaped sludge enters the next-stage belt conveyor via two flexible guide plates. These two flexible guide plates ensure that the rod-shaped sludge accurately and stably enters the middle position of the next-stage belt conveyor, thus preventing spillage and runaway of the rod-shaped sludge during subsequent transport. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the main cross-sectional structure of the rod-shaped sludge unloading chute of this utility model;

[0015] Figure 2 This is a utility model Figure 1 Enlarged structural diagram of A in the middle;

[0016] Figure 3 This is a side sectional view of the rod-shaped sludge unloading chute of this utility model.

[0017] Figure 4 This is a utility model Figure 3 Enlarged structural diagram of B in the middle;

[0018] Figure 5 This is a schematic diagram of the upper part of the unloading chute of this utility model;

[0019] Figure 6 This is a schematic diagram of the lower part of the unloading chute of this utility model;

[0020] The numbers in the attached diagram are:

[0021] 1. Discharge chute; 11. Second strip hole; 12. Second bolt; 13. Countersunk bolt; 2. Flow guiding structure; 21. Fixing plate; 22. Flexible flow guiding plate; 23. First bolt; 3. Conveying structure; 31. Fixing seat; 32. First sound insulation plate; 33. First wear-resistant liner; 34. Grating plate; 4. Annular sound insulation plate; 5. Annular wear-resistant liner; 6. Upper-level belt conveyor; 7. Lower-level belt conveyor; 8. Rod-shaped sludge. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0023] like Figures 1-6 As shown, a rod-shaped sludge discharge chute 1 is provided. The discharge chute 1 has an adjustable guide structure 2 and two conveying structures 3 inside. The guide structure 2 is located at the outlet end of the discharge chute 1. The two conveying structures 3 are symmetrically arranged, one above the other. One conveying structure 3 is located in the middle of the discharge chute 1, and the other conveying structure 3 is located at the inlet end of the discharge chute 1. For use, see [reference needed]. Figure 1 In this embodiment, the unloading chute 1 is connected and fixed between the discharge port of the upper-level belt conveyor 6 and the inlet of the lower-level belt conveyor 7.

[0024] The working process of the discharge chute 1: Rod-shaped sludge 8 enters the inlet of the discharge chute 1 through the outlet of the previous belt conveyor 6. Two conveying structures 3 form a "double buffer." First, the conveying structure 3 at the inlet of the discharge chute 1 acts to reduce the initial impact velocity of the rod-shaped sludge 8 as it enters the discharge chute 1, preventing the rod-shaped sludge 8 from directly impacting the inner wall of the discharge chute 1 due to excessive instantaneous impact force, thereby reducing impact damage to the rod-shaped sludge 8 and also reducing noise generation. Then, the rod-shaped sludge 8 continues to fall into the discharge chute 1 onto the conveying structure 3 in the middle of the discharge chute 1. This conveying structure 3 further weakens the kinetic energy of the rod-shaped sludge 8 during its descent, allowing it to be conveyed downwards in a more stable state, reducing the impact risk in subsequent stages and also reducing noise generation. Finally, the rod-shaped sludge 8 enters the belt of the next-stage belt conveyor 7 through the guide structure 2 at the outlet end of the discharge chute 1. The guide structure 2 acts to precisely control the falling trajectory and landing point of the rod-shaped sludge 8, effectively avoiding the phenomenon of material spillage or runaway of the rod-shaped sludge 8, and improving the stability of the conveying connection.

[0025] Among these improvements, reducing impact damage to the rod-shaped sludge 8 extends the lifespan of the unloading chute 1; while reducing noise generation significantly improves the working environment. The unloading chute 1 in this embodiment improves conveying efficiency, reduces maintenance costs, decreases the workload of cleaning up spilled material, and lowers labor costs.

[0026] In this embodiment, the unloading chute for rod-shaped sludge has two conveying structures 3 forming a "double buffer" when conveying rod-shaped sludge 8. This reduces the impact damage to the rod-shaped sludge 8 and also reduces noise generation. The guide structure 2 can precisely control the falling trajectory and landing point of the rod-shaped sludge 8, effectively preventing the rod-shaped sludge 8 from spilling or running away.

[0027] In one possible implementation, the flow guiding structure 2 includes two fixed plates 21 and flexible flow guiding plates 22. The two fixed plates 21 are symmetrically arranged at the outlet end of the discharge chute 1. The lower parts of the two fixed plates 21 are inclined and extend beyond the discharge chute 1. The two flexible flow guiding plates 22 are adjustablely arranged below the two fixed plates 21, and are inclined and located outside the discharge chute 1. The flexible flow guiding plates 22 are made of rubber. See also... Figure 3 and Figure 4 The lower parts of the two flexible guide plates 22 extend into the feed inlet of the next-stage belt conveyor 7, and the two flexible guide plates 22 are located in the middle position above the belt of the next-stage belt conveyor 7. The rod-shaped sludge 8 enters the belt of the next-stage belt conveyor 7 through the two flexible guide plates 22. The two flexible guide plates 22 work to accurately control the falling trajectory and landing point of the rod-shaped sludge 8, ensuring that the rod-shaped sludge 8 enters the middle position of the belt of the next-stage belt conveyor 7 accurately and stably, and thus also ensuring that there is no spillage or runoff of material when the belt is transporting the rod-shaped sludge 8 in the subsequent process.

[0028] When it is necessary to adjust the height of the flexible guide plate 22 (i.e., change the length of the extended flexible guide plate 22), simply change the installation position of the flexible guide plate 22 on the fixed plate 21. After changing the height of the flexible guide plate 22, the gap between the two flexible guide plates 22 and the belt of the next-stage belt conveyor 7 is actually adjusted, ensuring that the two flexible guide plates 22 can accurately control the falling trajectory and landing point of the rod-shaped sludge 8, while preventing wear between them and the belt.

[0029] In one possible implementation, each of the fixed plates 21 is provided with a first fixing hole, and each of the flexible guide plates 22 is provided with a first strip-shaped hole. A first bolt 23 passes through the first strip-shaped hole and the first fixing hole and is fixedly connected to a first nut. The flexible guide plate 22 changes its installation position on the fixed plate 21 through the first strip-shaped hole.

[0030] In one possible implementation, each of the conveying structures 3 includes a fixed base 31, a first sound insulation plate 32, a first wear-resistant liner 33, and a grid plate 34. Two fixed bases 31 are adjustablely positioned at the middle and inlet end of the unloading chute 1, respectively. The two fixed bases 31 are symmetrically arranged, one above the other. Two first sound insulation plates 32 are respectively fixedly mounted on the inclined surfaces of the two fixed bases 31. Two first wear-resistant liners 33 are respectively fixedly mounted on the two first sound insulation plates 32. Two grid plates 34 are respectively fixedly mounted on the two first wear-resistant liners 33. The two first sound insulation plates 32, the first wear-resistant liners 33, and the grid plate 34 are arranged at an angle. The lengths of the first sound insulation plates 32, the first wear-resistant liners 33, and the grid plate 34 are greater than the length of the inclined surfaces of the fixed bases 31.

[0031] The mesh size of the grating plate 34 is generally 2-3 times the size of the rod-shaped sludge 8, so that the mesh of the grating plate 34 can easily hold the rod-shaped sludge 8 and sludge fragments. When the mesh of the grating plate 34 is completely filled with rod-shaped sludge 8 and sludge fragments, when the rod-shaped sludge 8 is unloaded and falls onto the grating plate 34 later, most of its impact force is absorbed by the rod-shaped sludge 8 inside the mesh of the grating plate 34, which not only reduces the breakage of the rod-shaped sludge 8, but also reduces noise. The first wear-resistant liner 33 improves the resistance of the grating plate 34 to friction and impact of the rod-shaped sludge 8, while the first sound insulation plate 32 absorbs impact energy and reduces the noise generated by the collision between the unloaded rod-shaped sludge 8 and the rod-shaped sludge 8 inside the mesh of the grating plate 34.

[0032] The first wear-resistant liner 33 is made of ultra-high molecular weight polyethylene; the first sound insulation board 32 is made of high-density material to block sound transmission, with an average sound insulation of up to 30dB. The fixing seat 31 supports and fixes the grating plate 34, the first wear-resistant liner 33, and the first sound insulation board 32. When the height of the flexible grating plate 34 needs to be adjusted, the installation position of the fixing seat 31 on the discharge chute 1 can be changed. Changing the height of the grating plate 34 effectively adjusts the drop point position of the rod-shaped sludge 8.

[0033] The rod-shaped sludge 8 enters the inlet of the discharge chute 1 through the outlet of the previous belt conveyor 6. Two conveying structures 3 form a "double buffer." First, the conveying structure 3 at the inlet of the discharge chute 1 acts, using the dispersing and blocking effect of the grid plate 34 at the inlet of the discharge chute 1 to slow down the initial impact velocity of the rod-shaped sludge 8, preventing the rod-shaped sludge 8 from directly impacting the inner wall of the discharge chute 1 due to instantaneous impact force, thus reducing impact damage from the source. Then, the rod-shaped sludge 8 continues to fall into the discharge chute 1 onto the conveying structure 3 in the middle of the discharge chute 1. This conveying structure 3 further weakens the kinetic energy of the rod-shaped sludge 8 during its descent, allowing it to be conveyed downwards in a low-impact, stable state, reducing the impact risk in subsequent stages (such as the middle section and outlet of the discharge chute 1) and strengthening the impact protection effect. Furthermore, the rod-shaped sludge 8 discharged later impacts the rod-shaped sludge 8 within the grid plate 34, increasing buffering and reducing noise generation.

[0034] In one possible implementation, a second slotted hole 11 is provided on the pipe wall at the middle and inlet ends of the discharge chute 1, and a second fixing hole is provided on each of the fixing seats 31. A second bolt 12 passes through the second slotted hole 11 and the second fixing hole and is fixedly connected with a second nut. The fixing seat 31 can change its installation position at the middle and inlet ends of the discharge chute 1 through the second slotted hole 11. By adjusting the position of the fixing seat 31, the height of the grid plate 34 can be adjusted to ensure that the grid plate 34 can always reduce the kinetic energy of the rod-shaped sludge 8 during its descent.

[0035] As one possible implementation, an annular sound-insulating plate 4 is fixedly installed on the inner wall of the unloading chute 1, and an annular wear-resistant liner 5 is fixedly installed on the annular sound-insulating plate 4. Preferably, the annular sound-insulating plate 4 and the annular wear-resistant liner 5 are fixed to the inner wall of the unloading chute 1 from the inside to the outside using countersunk bolts 13. The annular sound-insulating plate 4 is made of ultra-high molecular weight polyethylene board, and the high-density material of the annular sound-insulating plate 4 blocks sound transmission, with an average sound insulation of up to 30 dB. Because some rod-shaped sludge 8 still directly impacts the inner wall of the unloading chute 1 without passing through the two grid plates 34, the inner wall of the unloading chute 1 is completely covered with an annular sound-insulating plate 4 and annular wear-resistant liner 5. The annular wear-resistant liner 5 improves the resistance of the inner wall of the unloading chute 1 to friction and impact of the rod-shaped sludge 8, reducing wear; the annular sound-insulating plate 4 absorbs impact energy, reducing the noise generated by the collision between the rod-shaped sludge 8 and the inner wall of the unloading chute 1, achieving a dual optimization of "wear resistance + noise reduction".

[0036] Preferably, the lower parts of the annular sound insulation plate 4 and the annular wear-resistant liner 5 are located above the two fixed plates 21.

[0037] Preferably, the annular sound insulation plate 4 and the annular wear-resistant liner 5 are provided with notches corresponding to the two fixing seats 31. The annular sound insulation plate 4 and the annular wear-resistant liner 5 do not affect the installation of the two fixing seats 31, and when the fixing seats 31 are installed, the second bolt 12 will pass through the annular sound insulation plate 4 and the annular wear-resistant liner 5.

[0038] The embodiments described above are merely preferred embodiments of this utility model and are only used to explain this utility model. They are not intended to limit the scope of implementation of this utility model. For those skilled in the art, other implementation methods can be easily made by substitution or modification based on the technical content disclosed in this specification. Therefore, all changes and improvements made to the principles and process conditions of this utility model should be included within the scope of the patent application of this utility model.

Claims

1. A discharge chute for rod-shaped sludge, characterized in that, The unloading chute (1) is internally adjustable and equipped with a flow guiding structure (2) and two conveying structures (3). The flow guiding structure (2) is located at the outlet end of the unloading chute (1). The two conveying structures (3) are symmetrically arranged and distributed one above the other. One of the conveying structures (3) is located in the middle of the unloading chute (1), and the other conveying structure (3) is located at the inlet end of the unloading chute (1).

2. The unloading chute for rod-shaped sludge according to claim 1, characterized in that, The flow guiding structure (2) includes two fixed plates (21) and a flexible flow guiding plate (22). The two fixed plates (21) are symmetrically arranged at the outlet end of the unloading chute (1). The lower parts of the two fixed plates (21) are inclined and extend to the outside of the unloading chute (1). The two flexible flow guiding plates (22) are respectively adjustablely arranged at the lower part of the two fixed plates (21). The two flexible flow guiding plates (22) are inclined and located outside the unloading chute (1).

3. The unloading chute for rod-shaped sludge according to claim 2, characterized in that, Each of the fixed plates (21) is provided with a first fixing hole, and each of the flexible guide plates (22) is provided with a first strip hole. The first bolt (23) passes through the first strip hole and the first fixing hole and is fixedly connected to the first nut.

4. The unloading chute for rod-shaped sludge according to claim 1, characterized in that, Each of the conveying structures (3) includes a fixed seat (31), a first sound insulation plate (32), a first wear-resistant liner (33), and a grid plate (34). The two fixed seats (31) are adjustablely arranged in the middle and at the inlet end of the unloading chute (1). The two fixed seats (31) are symmetrically arranged and distributed one above the other. The two first sound insulation plates (32) are respectively fixed on the inclined surfaces of the two fixed seats (31). The two first wear-resistant liner plates (33) are respectively fixed on the two first sound insulation plates (32). The two grid plates (34) are respectively fixed on the two first wear-resistant liner plates (33). The two first sound insulation plates (32), the first wear-resistant liner plates (33), and the grid plate (34) are arranged at an angle.

5. The unloading chute for rod-shaped sludge according to claim 4, characterized in that, The unloading chute (1) has a second strip hole (11) on the pipe wall at the middle and the inlet end. Each of the fixed seats (31) has a second fixing hole. The second bolt (12) passes through the second strip hole (11) and the second fixing hole and is fixedly connected to the second nut.

6. The unloading chute for rod-shaped sludge according to claim 1, characterized in that, An annular sound insulation plate (4) is fixedly installed on the inner wall of the unloading chute (1), and an annular wear-resistant liner (5) is fixedly installed on the annular sound insulation plate (4).

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