Sludge treatment feeder device

Abstract

The present application relates to sludge treatment device technical field, specifically to a kind of sludge treatment feeding device, comprising: homogenizing part, including the pretreatment bin with stirring roller being rotatably installed in inside, at least one overflow side bin is equipped at the top end of pretreatment bin side, overflow valve pipe for overflow is equipped on overflow side bin;Feeding water reducing part, including the dewatering transition bin being equipped behind overflow side bin, and the mud conveying unit for reducing the water content of mud body in conveying process is installed in dewatering transition bin;The sludge treatment feeding device, by the homogenizing part equipped, the sludge to be transported is uniformly processed creatively, and overflow structure is designed, and the paste sludge of reliable discharge uniformity can be obtained, sludge can be avoided to block and adhere rear conveying structure, and homogenizing part is beneficial to water body to get rid of binding force, improve water body excretion rate, reduce sludge water content;Feeding water reducing part can realize stable continuous feeding by paste sludge after homogenization treatment.

Description

Technical Field

[0001] This invention relates to the field of sludge treatment equipment technology, and specifically to a sludge treatment feeding device. Background Technology

[0002] With the acceleration of urbanization and the continuous development of industrial production, the amount of sewage sludge discharged has surged. Its initial water content is as high as 80%-95%, and it contains pollutants. Improper treatment can easily cause ecological problems. Therefore, sewage sludge treatment has become a core link in ecological security and solid waste reduction.

[0003] Currently, sludge feeding devices are the key hubs connecting sludge storage units and subsequent treatment units (such as dewatering machines, drying furnaces, and incinerators) in the entire sludge treatment process. Therefore, reducing the moisture content during the feeding stage is crucial. However, existing sludge feeding devices, including conveyor belts, grabs, or conveying pipes, all have shortcomings: they are only simple conveying and feeding structures and cannot remove free water or reduce moisture content during the feeding process. A large amount of free water will enter the subsequent dewatering process with the sludge, leading to a sharp increase in the load on dewatering equipment. For example, plate and frame filter presses require longer pressing times, centrifugal dewatering machines consume more than 30% more energy, and even affect the final disposal effect. For example, additional fuel is needed to increase the calorific value during incineration, and leachate treatment costs are increased during landfilling. In addition, the texture of settled sludge is uneven, and some sludge lumps and clumps are sticky and easily adhere to or even block the feeding structure, affecting the conveying efficiency.

[0004] In summary, existing conventional sludge feeding devices lack the function of pre-reducing moisture content, which restricts the overall efficiency of sludge treatment. Furthermore, existing feeding devices cannot cope with the adhesion problem caused by sludge. Therefore, we propose a sludge treatment feeding device. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings mentioned in the background section and provide a sludge treatment feeding device.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0007] A sludge treatment feeding device, comprising:

[0008] The homogenizing section is used to homogenize sludge into a paste-like fluid. It includes a pretreatment chamber with an internally rotating stirring roller. At least one overflow side chamber is provided at the top of one side of the pretreatment chamber, and an overflow valve pipe for overflow is provided on the overflow side chamber.

[0009] The feeding and water-reducing section is used to receive the sludge overflowing from the overflow valve pipe. It includes a drain transition chamber located behind the overflow side chamber and a sludge conveying unit installed in the drain transition chamber to simultaneously reduce the moisture content of the sludge during the conveying process.

[0010] Preferably, the pretreatment chamber above the stirring roller is divided into a feeding chamber and an overflow chamber by a partition plate;

[0011] The overflow side chamber is located at the top of one side cavity of the overflow chamber.

[0012] Preferably, the bottom of the pretreatment chamber is provided with a guide slope, which has a downward slope structure along the feed chamber toward the overflow chamber.

[0013] Preferably, the drain transition chamber includes an outer chamber body with a drain filter plate installed on the side near the overflow valve pipe, and the drain filter plate and the outer chamber body are respectively provided with a drain cavity and a sludge retention cavity on the inner and outer sides;

[0014] The bottom of the draining chamber is provided with a drain outlet for discharging the filtrate.

[0015] Preferably, the draining filter plate includes an inclined filter plate for supporting material and a vertical filter plate that are fixedly connected at the top and bottom, and a filter cloth is detachably installed on the surface of the draining filter plate near the sludge filtration cavity.

[0016] Preferably, the bottom of the sludge filtration chamber is provided with an accumulation slope plate, and the accumulation slope plate has an upward structure along the direction of the drainage chamber toward the sludge filtration chamber;

[0017] The conveying path of the sludge conveying unit is parallel to the surface of the sludge accumulation slope.

[0018] Preferably, the mud conveying unit includes an inner guide cylinder with an auger rotatably mounted inside, and an outer sleeve is sealed and installed outside the inner guide cylinder. The outer sleeve and the inner guide cylinder are provided with discharge ports at their ends.

[0019] A clamping cavity is provided between the outer sleeve and the inner guide cylinder, and filter holes are provided on the wall of the inner guide cylinder located in the clamping cavity.

[0020] Preferably, the outer sleeve is equipped with a filtration valve pipe and a shower valve pipe for connecting to a negative pressure liquid pump and a shower pipe, respectively.

[0021] Preferably, the auger is provided with a conical pressure shaft, the diameter of which gradually increases along the direction close to the discharge port.

[0022] Preferably, the partition plate is provided with a rotating slot for rotatably mounting the stirring roller.

[0023] Compared with the prior art, the beneficial effects of the present invention are:

[0024] 1. This sludge treatment feeding device creatively homogenizes the sludge to be transported through a homogenizing section and is designed with an overflow structure to reliably discharge uniform paste-like sludge, which can prevent sludge from clogging and sticking to the downstream conveying structure. In addition, the homogenizing section helps to remove water from the binding force, improves the water excretion rate, and reduces the water content of the sludge.

[0025] 2. The feeding and water-reducing section can stably and continuously convey the paste-like sludge after homogenization, and the clamping cavity can realize negative pressure filtration, achieving the functions of synchronous sludge conveying and reducing moisture content, which is conducive to improving sludge treatment efficiency. Attached Figure Description

[0026] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0027] Figure 1 This is one of the overall structural schematic diagrams of the present invention;

[0028] Figure 2 This is the second schematic diagram of the overall structure of the present invention;

[0029] Figure 3 This is an exploded view of the overall structural installation relationship of the present invention;

[0030] Figure 4 This is a schematic diagram of the homogenization section of the present invention;

[0031] Figure 5 This is a cross-sectional view of the homogeneous part of the present invention;

[0032] Figure 6 This is a schematic diagram of the feeding and water-reducing section of the present invention;

[0033] Figure 7 This is a cross-sectional view of the feeding and water-reducing section of the present invention;

[0034] Figure 8 This is a schematic diagram of the sludge conveying unit of the present invention;

[0035] Figure 9 This is a cross-sectional view of the mud conveying unit of the present invention;

[0036] Figure 10 This is a cross-sectional view of the mud conveying unit of the present invention.

[0037] The meanings of the labels in the diagram are as follows:

[0038] 1. Pretreatment chamber; 11. Overflow side chamber; 111. Overflow valve pipe; 12. Guide slope; 101. Feed chamber; 102. Overflow chamber; 2. Agitator roller; 3. Drive motor; 4. Partition plate; 401. Rotary slot;

[0039] 5. Drainage transition chamber; 51. Outer chamber body; 511. Drainage outlet; 52. Drainage filter plate; 521. Material support inclined filter plate; 522. Vertical filter plate; 501. Drainage chamber; 502. Sludge retention chamber; 53. Stacking slope plate;

[0040] 6. Sludge conveying unit; 61. Screwdriver; 611. Conical pressure shaft; 62. Outer sleeve; 621. Discharge port; 63. Inner guide cylinder; 64. Filter valve pipe; 65. Flushing valve pipe; 66. Mounting frame; 601. Clamping cavity;

[0041] 7. Output motor; 8. Belt drive pulley. Detailed Implementation

[0042] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0043] Please see Figures 1-10 The present invention will describe the above technical solution in detail through the following embodiments:

[0044] The sludge treatment feeding device in this embodiment, such as Figures 1-3 The structure shown includes:

[0045] The homogenization section is used to homogenize sludge into a paste-like fluid. It includes a pretreatment chamber 1 with two stirring rollers 2 installed by a drive motor 3. In this application, a feed chamber 101 and an overflow chamber 102 are formed in the pretreatment chamber 1 above the stirring rollers 2 by a partition plate 4. Three overflow side chambers 11 are provided at the top of the overflow chamber 102, and overflow valve pipes 111 for overflow are provided on the overflow side chambers 11.

[0046] like Figure 4 and Figure 5The structure shown includes a rotating slot 401 on the partition plate 4 for rotating and mounting the stirring roller 2. A guide slope 12 is provided at the bottom of the pretreatment chamber 1, sloping downwards from left to right. The purpose of this guide slope 12 is to guide the unevenly textured sludge into the feed chamber 101, where it is stirred by the stirring roller 2. The guide slope 12, in conjunction with the partition plate 4, ensures that the sludge is uniformly stirred before flowing into the overflow chamber 102 and overflowing upwards. Simultaneously, the aggregated sludge forms a U-shaped path along the feed chamber 101 and overflow chamber 102, facilitating thorough mixing before overflow. Otherwise, the aggregated sludge would settle under gravity and continue to be stirred by the stirring roller 2 until uniformly mixed, thus avoiding the probability of subsequent blockage.

[0047] It needs to be explained that this homogenizing section is necessary and can significantly reduce the moisture content during sludge transportation. Firstly, the initial sludge is limited by its adhesiveness, which makes it prone to clogging and difficult to reduce moisture content. In stagnant sludge, solid particles easily form large agglomerates due to van der Waals forces and colloidal adsorption, trapping air or binding moisture inside, resulting in an overall "hard lump" or "viscous mass". The homogenizing section can break down large agglomerates into smaller particles, releasing the moisture originally bound within the agglomerates and uniformly coating individual particles. This is equivalent to "diluting" the local concentration of solid particles, reducing the overall viscosity. The reduced viscosity directly affects the reliability of feeding, reduces adhesion and clogging problems in the conveying structure, and the released moisture also helps improve the drainage effect.

[0048] In addition, when the sludge is left to stand, it will trap a small amount of air, forming a three-phase mixture of gas, solid and liquid. During the mixing and homogenization process, the interstitial air will be expelled, making the sludge denser and more fluid, and less likely to stick to the tool surface when pushed later.

[0049] A feeding and water reduction section is provided on the rear side of the overflow compartment 11, such as... Figures 1-3 ,as well as Figure 6 , Figure 7 The structure shown includes a drain transition chamber 5 located behind the overflow side chamber 11 for receiving overflow sludge from the overflow valve pipe 111. This drain transition chamber 5 is as follows: Figure 7 The structure shown includes an outer chamber 51 with a drain filter plate 52 installed near the overflow valve pipe 111. The drain filter plate 52 and the outer chamber 51 are respectively provided with a drain chamber 501 and a sludge retention chamber 502 on their inner and outer sides. The drain chamber 501 has a drain outlet 511 at the bottom for draining the filtrate. The sludge retention chamber 502 has an accumulation slope 53 at the bottom. The accumulation slope 53 has an upward structure along the drain chamber 501 towards the sludge retention chamber 502, which allows the paste-like sludge to accumulate in the depression. After being transported by the sludge conveying unit 6, the sludge is returned to fill the depression, thus achieving the effect of continuous sludge transport.

[0050] It should be noted that the drain filter plate 52 includes, for example, Figure 7 The inclined filter plate 521 and the vertical filter plate 522, which are fixedly connected at the top and bottom, are shown in the embodiment. In this embodiment, a filter cloth is detachably installed on the surface of the drain filter plate 52 near the sludge retention chamber 502. This avoids clogging the filter holes and enables gravity filtration based on the cooperation of the drain filter plate 52 and the filter cloth. That is, the paste-like sludge is initially drained along the inclined filter plate 521. In the vertical filter plate 522, the vertical plate body reduces the squeezing pressure, which can slow down the clogging of the filter cloth. At the same time, the water can pass through the filter cloth and be drained by its own weight, thus achieving initial water reduction.

[0051] like Figures 7-10 The structure shown has a conveying path of the mud conveying unit 6 parallel to the surface of the stockpiling slope 53. The mud conveying unit 6 includes an inner guide cylinder 63 with an auger 61 rotatably mounted inside, and an outer sleeve 62 sealed to the outside of the inner guide cylinder 63. Both the outer sleeve 62 and the inner guide cylinder 63 have discharge ports 621 at their ends. In this embodiment, an output motor 7 is mounted on the outer sleeve 62 via a mounting bracket 66, and a belt drive pulley 8 is installed between the output motor 7 and the auger 61 to achieve transmission. In this embodiment, the auger 61 is equipped with a conical pressure shaft 611. The diameter of 611 gradually increases along the direction close to the discharge port 621, meaning that the sludge will be continuously compressed during the conveying process and squeezed out water. In addition, a clamping cavity 601 is provided between the outer sleeve 62 and the inner guide cylinder 63, and filter holes are provided on the cylinder wall of the inner guide cylinder 63 located in the clamping cavity 601. The suction valve pipe 64 installed on the outer sleeve 62 can filter the water in the sludge during the conveying process, and the flushing valve pipe 65 is used for periodic reverse flushing to unclog the filter holes. After the cleaning liquid flows out, it can clean the filter cloth on the surface of the drain filter plate 52 and then be discharged directly.

[0052] It is worth noting that the clamping cavity 601 provides the functions of vacuum filtration and reverse rinsing. The sludge conveying unit 6 and the homogenizing part work together to achieve a stable and continuous feeding function, avoiding clogging problems and reducing the moisture content. Because the sludge entering the draining transition chamber 5 is a homogeneous fluid with a paste-like texture, it can first pass through the filter cloth to escape the water with a high moisture content. Most of the solid particles are intercepted and then conveyed along the auger 61. At this time, the viscosity of the sludge is reduced due to its homogenized state, and the conveying resistance is small, so it will not clog the auger 61. With the help of negative pressure vacuum filtration, free water can be more easily separated from the gaps between particles. Under the action of negative pressure, it can quickly pass through the filter holes on the inner guide cylinder 63 to achieve the effect of water reduction and dewatering.

[0053] Furthermore, the characteristics of the paste-like sludge during the conveying process can better improve the conveying effect of the auger 61. The paste-like material can fill the gaps between the spiral blades of the auger 61 and be continuously and stably pushed by the blades. This avoids the problems of sludge water or mud scattering or slipping and falling back due to power mismatch when the texture is uneven. This is conducive to improving the conveying stability. Therefore, the auger 61 can stably convey pre-treated homogenized sludge, and the maintenance cost is much lower than that of pump conveying or belt conveying. At the same time, if homogenization treatment is not performed, the physical properties of the sludge are extremely uneven, with large local differences in viscosity, which will lead to serious loss of control of the auger conveying efficiency. Moreover, when the local viscosity is high or contains lumps, the conveying volume will drop sharply due to excessive resistance, and ultimately it will be impossible to stably reach the design conveying volume. Therefore, this application realizes the function of stable sludge conveying, which can reduce the moisture content during the conveying process and avoid clogging.

[0054] It should be noted that if the embodiments of the present invention involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0055] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, "multiple" refers to two or more. Moreover, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0056] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within the present invention.

Claims

1. A sludge treatment feeding device, characterized in that: include: The homogenizing section is used to homogenize sludge into a paste-like fluid, including a pretreatment chamber (1) with an internally rotating stirring roller (2), and at least one overflow side chamber (11) is provided at the top of one side of the pretreatment chamber (1), and an overflow valve pipe (111) for overflow is provided on the overflow side chamber (11). The feeding and water reduction section is used to receive the sludge overflowing through the overflow valve pipe (111), including a drain transition chamber (5) located behind the overflow side chamber (11), and a sludge conveying unit (6) installed in the drain transition chamber (5) to simultaneously reduce the moisture content of the sludge during the conveying process. The pretreatment chamber (1) is divided into a feed chamber (101) and an overflow chamber (102) by a partition plate (4) above the stirring roller (2). The overflow side chamber (11) is located at the top of the cavity on one side of the overflow chamber (102). The drain transition chamber (5) includes an outer chamber body (51) with a drain filter plate (52) installed on the side near the overflow valve pipe (111). The drain filter plate (52) and the outer chamber body (51) are respectively provided with a drain cavity (501) and a sludge retention cavity (502) on the inner and outer sides. The drain cavity (501) is provided with a drain outlet (511) for discharging filtrate at the bottom. The drain filter plate (52) includes a material support inclined filter plate (521) and a vertical filter plate (522) fixedly connected at the top and bottom, and a filter cloth is detachably installed on the surface of the drain filter plate (52) near the sludge retention chamber (502).

2. The sludge treatment feeding device as described in claim 1, characterized in that: The pretreatment chamber (1) has a guide slope (12) at the bottom, and the guide slope (12) has a downward slope structure along the feed chamber (101) toward the overflow chamber (102).

3. The sludge treatment feeding device as described in claim 1, characterized in that: The bottom of the sludge filtration chamber (502) is provided with a sloping plate (53), and the sloping plate (53) has an upward structure along the direction of the draining chamber (501) toward the sludge filtration chamber (502); The conveying path of the mud conveying unit (6) is parallel to the surface of the sludge accumulation slope plate (53).

4. The sludge treatment feeding device as described in claim 3, characterized in that: The mud conveying unit (6) includes a guide inner cylinder (63) with an auger (61) rotatably installed inside, and an outer sleeve (62) is sealed on the outside of the guide inner cylinder (63). The outer sleeve (62) and the guide inner cylinder (63) are provided with discharge ports (621) at their ends. A clamping cavity (601) is provided between the outer sleeve (62) and the inner guide cylinder (63), and filter holes are provided on the cylinder wall of the inner guide cylinder (63) located in the clamping cavity (601).

5. The sludge treatment feeding device as described in claim 4, characterized in that: The outer sleeve (62) is equipped with a suction valve pipe (64) and a shower valve pipe (65) for connecting to a negative pressure liquid pump and a shower pipe respectively.

6. The sludge treatment feeding device as described in claim 5, characterized in that: The auger (61) is provided with a conical pressure shaft (611), the diameter of which gradually increases along the direction close to the discharge port (621).

7. The sludge treatment feeding device as described in claim 1, characterized in that: The partition plate (4) is provided with a rotating slot (401) for rotating and installing the stirring roller (2).

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