Sludge distributor

Abstract

The present application relates to a kind of sludge distributors, comprising: installation part, fixedly connected to sludge pipeline;Rotary part, rotatably connected to installation part, the inside of rotary part is in fluid communication with sludge pipeline;And drive motor, transmission is connected to rotary part, to drive rotary part rotation;Wherein, sludge distributor further includes multiple segmentation blades, the upper end of each segmentation blade is connected to rotary part and is spaced apart circumferentially around rotary part, the lower end of each segmentation blade is connected to end part and is spaced apart circumferentially around end part, the space surrounded by end part and multiple segmentation blades is in fluid communication with the inside of rotary part, the gap between multiple segmentation blades forms multiple outlets for sludge discharge, and rotary part is driven by drive motor and rotates around rotation axis, so as to drive multiple segmentation blades and end part rotate together, to throw sludge outwards through multiple outlets.Sludge distribution head adopts flange connection form, can be quickly disassembled or replaced with other forms of distribution head.

Description

Technical Field

[0001] This invention relates to the field of sludge incineration technology, particularly to the field of sludge and waste co-incineration technology. More specifically, this invention relates to a sludge distributor that enables the fine and uniform addition of sludge. Background Technology

[0002] In recent years, with the development of sludge dewatering or drying technology and the construction of waste incineration plants, co-incineration of sludge and waste has become an increasingly effective and technically and policy-feasible method for sludge treatment.

[0003] Waste incineration, as a mainstream technology for waste treatment, has become very mature and reliable. Waste incineration plants can provide the energy needed for sludge dewatering or drying. Wastewater, waste gas, and waste residue generated during sludge dewatering or drying and incineration can all be treated together with the incineration products. Sludge and waste have an inherent advantage in co-processing. Therefore, co-incineration of sludge and waste is a relatively reasonable sludge disposal method, which not only maximizes volume reduction but also achieves a certain degree of resource recovery.

[0004] Waste incineration is a mature technology, but if sludge is not properly mixed with the waste after entering the incinerator, it can easily cause slagging, making it difficult to burn completely and producing a strong odor. How to effectively incorporate sludge into the furnace and achieve proper mixing with the waste is the key and technical challenge for successful sludge co-firing in waste incineration.

[0005] In existing technologies, after sludge dewatering or drying, it is directly transported to the incinerator feed hopper using a positive displacement pump and pipelines. However, even with multi-point feeding via branch pipes, the flow distribution of dewatered or dried sludge is difficult to control due to its non-Newtonian nature. Sludge commonly clumps and piles up during addition, making it difficult to mix evenly with the waste. Furthermore, frequent adjustments to the valves in the sludge feeding pipelines are necessary to ensure sludge output from each branch pipe. Unevenly distributed sludge entering the furnace can lead to problems such as flame suppression, uneven feeding, and incomplete combustion. Therefore, it is necessary to break up and finely mix the sludge at the waste feeding point to achieve stable co-combustion of sludge and waste and increase the co-combustion ratio of sludge added to the waste. Summary of the Invention

[0006] This invention achieves uniform distribution of dehydrated or dried sludge and waste during co-incineration, and increases the sludge co-incineration ratio.

[0007] The sludge distributor of the present invention utilizes a variable frequency motor to drive a rotary distribution device. Under the extrusion of a positive displacement pump, the sludge is shredded and finely divided. Under the action of centrifugal force, the sludge is evenly distributed into the waste along the gaps between the blades formed on the outer periphery of the conical end component. This solves the problem of uneven mixing of sludge and waste and difficulty in thorough burning.

[0008] The sludge distributor according to the present invention includes: a mounting part fixedly connected to a sludge pipe; a rotating part rotatably connected to the mounting part, the interior of the rotating part being in fluid communication with the sludge pipe; and a drive motor drivenly connected to the rotating part to drive the rotating part to rotate. The sludge distributor further includes a plurality of dividing blades, the upper end of each dividing blade connected to the rotating part and circumferentially spaced around the rotating part, the lower end of each dividing blade connected to an end member and circumferentially spaced around the end member, the space enclosed by the end member and the plurality of dividing blades being in fluid communication with the interior of the rotating part, the gaps between the plurality of dividing blades forming a plurality of outlets for sludge discharge, and the rotating part being driven to rotate by the drive motor, thereby causing the plurality of dividing blades and the end member to rotate together, so as to throw the sludge outward through the plurality of outlets.

[0009] According to one or more embodiments of the present invention, the plurality of segmented blades are helical, extending helically along the rotation axis of the rotating part, and the cross-section of the plurality of segmented blades extends approximately along the radial direction of the rotating part.

[0010] According to one or more embodiments of the present invention, the upper ends of the plurality of dividing blades are evenly spaced apart around the rotating part, and the lower ends of the plurality of dividing blades are evenly spaced apart around the end component, so that a sludge stream can be divided into several sludge streams of uniform volume.

[0011] According to one or more embodiments of the present invention, at least one connection point between the upper end of the segmented blade and the rotating part is circumferentially spaced from the connection point between the lower end of the segmented blade and the end component about the axis of rotation.

[0012] According to one or more embodiments of the present invention, at least one of the segmented blades has an angle between 55 degrees and 65 degrees with a plane perpendicular to the axis of rotation.

[0013] The aforementioned configuration of the dividing blades facilitates the division of sludge into several equal-volume streams, which, driven by the rotation of the rotating part, are ejected through the sludge outlet formed by the gaps between the spiral dividing blades and evenly distributed on the waste.

[0014] According to one or more embodiments of the present invention, the end member is a cone that gradually tapers towards the sludge pipe. Preferably, the end member is a cone with a circular base. The end member rotates synchronously with the rotating part and multiple dividing blades, compressing the sludge and cooperating with the dividing blades to evenly eject the sludge from the sludge distributor.

[0015] According to one or more embodiments of the present invention, the rotating part is supported on the mounting part by a bearing, wherein the rotating part passes through the bearing and is fixed to the inner ring of the bearing, and the outer ring of the bearing is fixed to the inner wall of the housing of the mounting part. The bearing is preferably a deep groove ball bearing.

[0016] According to one or more embodiments of the present invention, the drive motor is controlled by a control box, which controls the drive motor to rotate at a varying frequency and can also select forward and reverse rotation, thereby driving the rotating part to rotate in a manner that changes direction and rate, so as to control the sludge discharge rate and the diameter of the sludge spread.

[0017] According to one or more embodiments of the present invention, a sludge pipe is connected to the mounting portion of a sludge distributor via a sludge pipe flange made of flexible material. A first flange located below the mounting portion supports the drive housing via a support portion made of elastic material. The coupling connecting the planetary reducer and the drive motor is a flexible coupling. Furthermore, an adjusting plate is provided between the drive housing and the planetary reducer, and a transition bracket is provided between the planetary reducer and the drive motor.

[0018] The above-mentioned preferred configuration can at least partially eliminate the impact forces between the mounting part and the drive housing, between the drive housing and the planetary reducer, and between the planetary reducer and the drive motor, thereby at least partially eliminating the impact of the pulse vibration caused by the intermittent feeding of the positive displacement pump on the operation of the sludge distributor.

[0019] In practice, a positive displacement pump transports dewatered or dried sludge to the waste inlet via a main pipe. At the inlet, the main pipe branches into several sludge pipes, each connected to the sludge distributor described herein. The sludge, propelled by the pressure of the positive displacement pump, flows through the rotating end component of the sludge distributor. Under the action of the dividing blades, the sludge transported by each branch pipe is further divided into several streams of uniform volume, which are then evenly distributed on the waste surface under the influence of centrifugal force. Attached Figure Description

[0020] The technical solutions of embodiments of the present invention will now be described in more detail with reference to the accompanying drawings, wherein the illustrations are intended only to show certain exemplary embodiments and are not intended to limit the invention. In the drawings, the same reference numerals denote the same or corresponding parts. The dimensions and scales in the drawings are also for illustration only and should not be construed as limiting the invention.

[0021] Figure 1 This is a front perspective view of the sludge distributor according to the present invention;

[0022] Figure 2 The sludge distributor according to the present invention is along Figure 1 A cross-sectional view taken from line AA in the diagram;

[0023] Figure 3 This is a top view of an alternative embodiment of the sludge distributor according to the present invention;

[0024] Figure 4 This is a schematic diagram of an improved sludge dosing and uniform distribution system having a sludge distributor according to the present invention.

[0025] List of reference numerals

[0026] 1. Sludge distributor

[0027] 2. Sludge Pipeline

[0028] 11 Installation Department

[0029] 12 Rotating part

[0030] 13. Segmented blades

[0031] 14-end components

[0032] 15 bearings

[0033] 16 First synchronous belt pulley

[0034] 17 Synchronous Toothed Belt

[0035] 18 Second synchronous belt pulley

[0036] 19 First flange

[0037] 20. Rotary sealing ring with skeleton

[0038] 21 Support section

[0039] 22 Second flange

[0040] 23 Drive enclosure

[0041] 24 Adjustment Plate

[0042] 25 Planetary gear reducer

[0043] 26 Connecting shaft

[0044] 27 Transition Support

[0045] 28 drive motors

[0046] 29 Couplings

[0047] 30 Sludge Pipe Flange Detailed Implementation

[0048] To make the objectives and advantages of the technical solutions of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. The same reference numerals in the drawings represent the same components. It should be noted that the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the described embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0049] Figure 1 A front view of the sludge distributor 1 according to the present invention is shown. Sludge enters the sludge distributor from the sludge pipe 2 in the direction indicated by arrow F1, is driven to rotate by the rotating part 12, is squeezed by the conical end member 14, and is then thrown into the garbage from the blade gap of the sludge distributor in the direction indicated by arrow F2.

[0050] from Figure 1 As can be seen, the sludge pipe 2 is fixed to the mounting portion 11 of the sludge distributor 1 via a flange 30. The lower end of the sludge pipe 2 is located inside the housing of the mounting portion 11, discharging sludge toward the rotating portion 12. The rotating portion 12 is rotatably connected to the mounting portion 11, and its interior is in fluid communication with the sludge pipe 2. In this particularly preferred embodiment, the rotating portion 12 is a stainless steel pipe with a circular cross-section, and its rotation axis X (i.e., the central axis) coincides with the central axis of the sludge pipe 2.

[0051] The lower part of the rotating part 12 is connected to a plurality of circumferentially evenly spaced dividing blades 13. The other ends of the dividing blades 13 are connected to a conical end member 14 and are circumferentially evenly spaced around the end member 14. The dividing blades 13 are helical, extending spirally along the rotation axis X of the rotating part 12, and the gaps between the blades form multiple outlets for sludge discharge. Figure 1 In the preferred embodiment shown, there are eight dividing blades 13, forming eight outlets for sludge discharge. The connection point between the upper end of each dividing blade 13 and the rotating part 12 is circumferentially spaced relative to the connection point between the lower end of the dividing blade 13 and the end member 14 about the rotation axis X. The cross-section of each dividing blade 13 extends approximately in the radial direction of the rotating part 12. The angle between each dividing blade 13 and the plane perpendicular to the rotation axis X is 60 degrees. The end member 14 is a cone with a circular base that tapers towards the sludge pipe. The lower ends of the dividing blades 13 are evenly distributed circumferentially around the bottom of the cone, allowing a single sludge stream to be easily subdivided into eight equal-volume sludge streams.

[0052] When the sludge distributor 1 is running, the sludge enters the sludge pipe 2 under the pressure of the positive displacement pump. The sludge flowing out of the sludge pipe 2 enters the rotating part 12 and flows into the space enclosed by the end component 14 and multiple dividing blades 13 under the action of gravity. As the rotating part 12, the dividing blades 13 and the end component 14 rotate synchronously, under the action of rotational centrifugal force, the sludge is thrown out along the outlet formed by the gaps between the dividing blades 13, thus being evenly distributed circumferentially into the waste.

[0053] The rotation of the rotating part 12 is driven by the drive motor 28. Figure 1 As can be seen, the rotating part 12 passes through the bearing 15 and is fixed to the inner ring of the bearing 15, while the outer ring of the bearing 15 is fixed to the inner wall of the housing of the mounting part 11. A first flange 19 with a skeleton rotary seal ring 20 supports the bearing 15 from below, and the first flange 19 is fixedly connected to the housing of the mounting part 11 to enclose the bearing 15 in the mounting part 11. The bearing 15 is preferably a deep groove ball bearing.

[0054] The first synchronous pulley 16 is located between two deep groove ball bearings 15, and the inner circumference of the first synchronous pulley 16 is fixed to the rotating part 12 by screws. Figure 2 As can be seen from the cross-section, the first synchronous pulley 16 is connected to the second synchronous pulley 18 via a synchronous toothed belt 17.

[0055] like Figure 1 As shown, the side of the first flange 19 supports the support 21, and the drive housing 23 is fixed to the support 21. The second flange 22 is fixed to the bottom of the drive housing 23, and the second synchronous pulley 18 is installed inside the second flange 22. The second synchronous pulley 18 is connected to the planetary reducer 25 through the drive housing 23, and the planetary reducer 25 is connected to the variable frequency drive motor 28 via the coupling 29. The coupling 29 is preferably a lamellar coupling.

[0056] According to the present invention, the variable frequency drive motor 28 of the sludge distributor 1 is controlled by a variable frequency control box. This control box is communicatively connected to a distributed control system (DCS) or a programmable logic controller (PLC), and controls the rotation of the drive motor 28 through programming with the DCS or PLC, thereby controlling the rotation of the rotating part 12. The variable frequency control box controls the sludge distributor 1 to automatically adjust its rotation speed according to time, and adjusts the change in the radius of sludge falling by changing the rotation rate of the rotating part 12 of the sludge distributor 1, thereby achieving uniform distribution of sludge.

[0057] The above is based on Figure 1 and Figure 2 The description is only one particularly preferred exemplary embodiment of the present invention; however, the present invention is not limited thereto, and the sludge distributor of the present invention may have several other variations.

[0058] like Figure 3 As shown, in one or more embodiments of the present invention, the mounting portion 11 may extend upward to form a tubular shape, such that the sludge pipe 2 can be fitted into the tubular extension of the mounting portion 11, and the sludge pipe 2 can be fixed to the mounting portion by screwing in screws. The method of fixing the sludge pipe 2 to the mounting portion 11 is not limited to this; for example, the sludge pipe 2 can also be fixed to the mounting portion by welding or by providing corresponding threads on the upper part of the sludge pipe 2 and the mounting portion 11.

[0059] In a preferred embodiment of the invention, the lower end of the sludge pipe 2 extends into the rotating part 12, and the outer circumferential diameter of the sludge pipe 2 is adapted to fit the inner circumferential diameter of the rotating part 12, so that the sludge can easily enter the rotating part and be driven to rotate, and to prevent the sludge from overflowing. In an alternative embodiment of the invention, as long as the sludge pipe 2 and the rotating part 12 are in fluid communication, the positional relationship and dimensions of the sludge pipe 2 and the rotating part 12 can be any suitable form, not limited to the above description.

[0060] In a preferred embodiment of the invention, the sludge distributor 1 has eight dividing blades 13, each of which is helical and extends helically along the rotation axis X of the rotating part 12. The upper ends of the eight dividing blades 13 are evenly spaced around the rotating part 12, and their lower ends are evenly spaced around the bottom circumference of the conical end member 14. The connection point between the upper end of at least one dividing blade 13 and the rotating part 12 is circumferentially spaced relative to the connection point between the lower end of the dividing blade 13 and the end member 14 around the rotation axis X. In an alternative embodiment of the invention, the shape of the dividing blades 13 is not limited to helical, but can also be strip-shaped or plate-shaped. Furthermore, the number of dividing blades 13 can be any number greater than or equal to two, and the circumferential positions of the upper and lower ends of the dividing blades 13 can be arbitrary.

[0061] In a preferred embodiment of the invention, the angle between the dividing blade 13 and the plane perpendicular to the rotation axis X of the rotating part 12 is in the range of 55 degrees to 65 degrees. Particularly preferably, the angle between each dividing blade 13 and the plane perpendicular to the rotation axis X of the rotating part 12 is 60 degrees.

[0062] In a preferred embodiment of the invention, the end member 14 is a cone that tapers gradually toward the sludge pipe 2. In an alternative embodiment of the invention, the bottom surface shape of the end member 14 can be any shape suitable for connection with the plurality of segmented blades 13.

[0063] In an alternative embodiment of the invention, the number of bearings 15 can be arbitrary, and the bearings 15 can be placed in a bearing housing fixed to the inner wall of the mounting portion 11 housing to protect the bearings 15.

[0064] In addition, since the positive displacement pump feeds sludge intermittently during the sludge transport process, it will generate pulse vibrations on the sludge distributor 1 located at the end of the sludge pipeline 2, thereby affecting the operation of the sludge distributor 1.

[0065] Therefore, in a particularly preferred embodiment of the invention, the sludge pipe 2 is connected to the mounting portion 11 of the sludge distributor 1 via a sludge pipe flange 30 made of flexible material. A first flange 19 located below the mounting portion 11 supports the drive housing 23 via a support portion 21 made of elastic material. The coupling 29 connecting the planetary reducer 25 and the drive motor 28 is preferably a flexible coupling. Furthermore, an adjustment plate 24 is provided between the drive housing 23 and the planetary reducer 25, and a transition bracket 27 is provided between the planetary reducer 25 and the drive motor 28.

[0066] The above-mentioned preferred configuration can at least partially eliminate the impact forces between the mounting part 11 and the drive housing 23, between the drive housing 23 and the planetary reducer 25, and between the planetary reducer 25 and the drive motor 28, thereby at least partially eliminating the impact of the pulse vibration caused by the intermittent feeding of the positive displacement pump on the operation of the sludge distributor 1.

[0067] like Figure 4 As shown, a positive displacement pump transports dewatered or dried sludge to the waste inlet via a main pipe. At the waste inlet, the main pipe branches into several sludge pipes 2, each connected to the sludge distributor 1 described herein. The sludge flows under the pressure of the positive displacement pump through the rotating end component 14 of the sludge distributor 1. Under the action of the dividing blades 13, the sludge transported by each branch pipe is further subdivided into 1 / 8 of its original volume, and under the action of centrifugal force, it is evenly distributed on the surface of the waste.

[0068] By using the sludge distributor described herein, the improved sludge feeder has the following advantages:

[0069] According to existing technologies, sludge can only be fed at one point, resulting in sludge piling up and clumping, and making it difficult to burn thoroughly in the furnace. By adopting the technical solution of this invention, for a system with M branch pipes and a sludge distributor with N segmented blades (M and N are both natural numbers greater than or equal to 2), the volume of a single sludge feed is subdivided into 1 / (M*N) of the original volume. Furthermore, driven by the rotating part, the discharged sludge is evenly thrown radially, spreading out an area approximately 20 times larger than before, increasing the proportion of sludge co-combusted with the waste. In addition, the sludge distributor according to this invention allows for the addition of sludge with lower moisture content, saving energy costs required for dewatering or drying sludge.

[0070] The sludge distributor according to the present invention employs a distributed control system (DCS) or a programmable logic controller (PLC), and controls the rotation of the drive motor through DCS or PLC programming, thereby controlling the rotation speed of the rotating part to adjust the radius of sludge drop. Operators do not need to monitor and adjust the operation of the sludge distributor on-site; instead, they can remotely monitor the operation of the sludge distributor visually from the operation panel and adjust the rotation speed of the sludge distributor according to on-site conditions. This achieves remote operation, visual monitoring, and flexible dynamic adjustment of the sludge distribution system.

[0071] All standard parts used in this invention can be purchased from the market, and can be customized as needed according to the description and drawings. The specific connection methods of each part adopt conventional methods such as screws and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the structure and principle of the components known to those skilled in the art can be known by those skilled in the art through technical manuals or conventional experimental methods.

[0072] The foregoing description of exemplary embodiments of the sludge distributor proposed in this invention has been detailed with reference to preferred embodiments. However, those skilled in the art will understand that various modifications and alterations can be made to the above specific embodiments without departing from the concept of this invention, and various combinations can be made to the various technical features and structures proposed in this invention without exceeding the protection scope of this invention.

Claims

1. A sludge distributor (1), comprising: Mounting part (11), which is fixedly connected to sludge pipe (2); A rotating part (12), rotatably connected to a mounting part (11), the interior of the rotating part (12) being in fluid communication with a sludge pipe (2); and A drive motor (28) is connected to the rotating part (12) to drive the rotating part (12) to rotate; The sludge distributor (1) further includes multiple dividing blades (13). The upper end of each dividing blade (13) is connected to the rotating part (12) and circumferentially spaced around the rotating part (12). The lower end of each dividing blade (13) is connected to the end member (14) and circumferentially spaced around the end member (14). The space enclosed by the end member (14) and the multiple dividing blades (13) is in fluid communication with the interior of the rotating part (12). The gaps between the multiple dividing blades (13) form multiple outlets for sludge discharge. The rotating part (12) is driven by a drive motor (28) to rotate around the rotation axis (X), thereby driving the multiple dividing blades (13) and the end member (14) to rotate together, so as to throw the sludge outward through the multiple outlets.

2. The sludge distributor (1) according to claim 1, wherein, The plurality of segmented blades (13) are spiral-shaped and extend spirally along the direction of the rotation axis (X) of the rotating part (12).

3. The sludge distributor (1) according to claim 1, wherein, The upper ends of the plurality of segmented blades (13) are evenly spaced around the rotating part (12), and the lower ends of the plurality of segmented blades (13) are evenly spaced around the end part (14).

4. The sludge distributor (1) according to claim 1, wherein, At least one connection point between the upper end of the segmented blade (13) and the rotating part (12) is circumferentially spaced from the connection point between the lower end of the segmented blade (13) and the end member (14) around the axis of rotation (X).

5. The sludge distributor (1) according to claim 4, wherein, At least one of the segmented blades (13) has an angle between itself and a plane perpendicular to the axis of rotation (X) in the range of 55 to 65 degrees.

6. The sludge distributor (1) according to claim 1, wherein, The end component (14) is a cone that gradually tapers toward the sludge pipe (2).

7. The sludge distributor (1) according to claim 1, wherein, The rotating part (12) is supported on the mounting part (11) by a bearing (15).

8. The sludge distributor (1) according to claim 7, wherein, The rotating part (12) passes through the bearing (15) and is fixed to the inner ring of the bearing (15), and the outer ring of the bearing (15) is fixed to the inner wall of the housing of the mounting part (11).

9. The sludge distributor (1) according to claim 1, wherein, The drive motor (28) is controlled by a control box, which controls the drive motor (28) to rotate at a varying frequency.

10. The sludge distributor (1) according to claim 9, wherein, The control box controls the rotation speed of the rotating part (12) by adjusting the frequency of the drive motor (28), thereby adjusting the falling radius of the thrown sludge.

11. The sludge distributor (1) according to claim 1, wherein, The mounting part (11) includes a sludge pipe flange (30), through which the sludge pipe (2) is mounted to the mounting part (11), and the sludge pipe flange (30) is made of a flexible material.

12. The sludge distributor (1) according to claim 1, wherein, The mounting part (11) supports the driver housing (23) via a support part (21), and the support part (21) is made of an elastic material.

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