Wet sludge back-spraying incinerator

Abstract

The utility model relates to the technical field of sludge treatment, in particular to a wet sludge back-spraying incinerator which comprises a fixing seat, a shell is arranged on the top end wall of the fixing seat, a feeding pipe is arranged on the side wall of the shell, a motor is arranged on the top end wall of the shell, and a feeding pipe is arranged on the side wall of the feeding pipe. A rotating rod is rotationally connected to the top end wall of the fixing seat and located in the shell through a first sealing bearing, a through hole communicating with the inner cavity is formed in the outer wall of the rotating rod in a penetrating mode, a driving shaft is arranged on the top end wall of the rotating rod, and the outer wall of the driving shaft is rotationally connected with the inner top wall of the shell through a second sealing bearing; the top end of the driving shaft is fixedly connected with the output end of the motor through a coupler, and the bottom end of the rotating rod extends out of the shell. The rotary sludge spray gun is adopted to spray wet sludge at different angles and positions, so that the sludge is uniformly distributed in the incinerator, the situation that local sludge is accumulated or is too little is avoided, the uniformity of combustion is improved, the phenomenon of local overheating or supercooling is reduced, the combustion efficiency is improved, and the risk of damage to the incinerator body is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of sludge treatment, and particularly relates to a wet sludge backspray incinerator. Background Art

[0002] With the development of industry and the acceleration of urbanization, the amount of sludge generated by sewage treatment plants is increasing continuously. The treatment of sludge has become an environmental problem that needs to be solved urgently. At present, the wet sludge backspray incinerator is a commonly used sludge treatment method, which realizes the reduction, harmlessness and resource utilization of sludge by spraying wet sludge into the incinerator for combustion.

[0003] However, the sludge spray guns used in the existing wet sludge backspray incinerators are usually fixed in the furnace. This fixed spraying method has many defects. On the one hand, fixed spraying easily leads to uneven distribution of sludge in the furnace, resulting in excessive sludge in some areas and incomplete combustion, while in other areas, there may be waste of energy due to too little sludge. At the same time, local overheating or overcooling is likely to occur, affecting the overall performance and service life of the incinerator. On the other hand, fixed spraying makes the problems of slagging and ash accumulation in the furnace more serious. Slagging will block the grate, affect the air flow distribution and heat transfer effect, and ash accumulation will reduce the heat transfer efficiency and increase the flue gas resistance. In addition, for different properties of sludge, the fixed spraying spray gun is difficult to adapt to its changes, resulting in unstable combustion effects. Moreover, the fixed-mounted spray gun also faces many difficulties in maintenance and replacement, with high operation difficulty, high danger, and may even cause production interruption.

[0004] In summary, the existing sludge spray guns for wet sludge backspray incinerators have problems such as uneven combustion, serious slagging and ash accumulation, poor adaptability, and difficult maintenance. To solve these problems, a sludge spray gun that can rotate in the incinerator is needed to achieve uniform spraying of sludge, improve combustion efficiency, reduce slagging and ash accumulation, adapt to different sludge properties, and facilitate maintenance. Content of the Utility Model

[0005] The utility model designs a wet sludge backspray incinerator to solve the above existing problems.

[0006] In order to achieve the above technical purposes and reach the above technical effects, the utility model is realized by the following technical solutions:

[0007] A wet sludge back-injection incinerator comprises a fixed seat, a shell is provided on the top wall of the fixed seat, a feed pipe is provided on the side wall of the shell, a motor is provided on the top wall of the shell, a rotating rod is provided on the top wall of the fixed seat and is located in the shell and is rotatably connected through a sealed bearing 1, a through hole communicating with an inner cavity is penetrated through the outer wall of the rotating rod, a driving shaft is provided on the top wall of the rotating rod, the outer wall of the driving shaft is rotatably connected to the inner top wall of the shell through a sealed bearing 2, the top end of the driving shaft is fixedly connected to the output end of the motor through a coupling, the bottom end of the rotating rod extends out of the shell and is provided with a base, a sludge spray gun is provided on the outer wall of the base through a connecting seat, and a connecting pipe is provided between the sludge spray gun and the rotating rod.

[0008] Furthermore, the outer ring of the sealed bearing 1 is fixedly connected to the outer wall of the fixed seat through the bearing seat, and the inner ring of the sealed bearing 1 is connected to the outer wall of the rotating rod by interference fit.

[0009] Furthermore, the rotating rod is a hollow structure and is connected to the connecting pipe.

[0010] Furthermore, the number of the connecting sockets is at least two, and they are equally distributed on the circumferential outer wall of the base.

[0011] The beneficial effects of the utility model are:

[0012] The utility model adopts a rotatable sludge spray gun to spray wet sludge at different angles and positions, so that the sludge is evenly distributed in the incinerator, avoiding local sludge accumulation or too little sludge, which helps to improve the uniformity of combustion, reduce local overheating or overcooling, thereby improving combustion efficiency and reducing the risk of damage to the furnace body;

[0013] The rotatable design avoids the sludge from being concentrated in a specific area for a long time, thus reducing the ash melting and slagging caused by local high temperature. By constantly changing the injection position, the temperature distribution in the furnace is more uniform, reducing the possibility of slagging.

[0014] Rotating jets can disturb the airflow in the furnace, reduce the accumulation of fine particles in specific areas, and reduce the formation of ash accumulation, which helps to maintain the heat transfer efficiency and smooth airflow in the furnace, reduce smoke exhaust resistance, and improve the stability and reliability of the incinerator;

[0015] The rotatable sludge spray gun can adjust parameters such as rotation speed, spray angle and flow rate according to different sludge moisture content, composition and other properties, so as to better meet the combustion requirements of various sludges, improve the combustion effect and ensure that sludge of different properties can be effectively treated;

[0016] For sludge from different sources and with different treatment processes, the rotatable spray gun can be optimized for spraying according to its characteristics, improving its adaptability to different sludges, thereby enhancing the efficiency and stability of the entire sludge treatment system. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] To more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0018] Figure 1 Structural schematic diagram of the present invention;

[0019] Figure 2 Expanded structural schematic diagram of the main body of the present invention.

[0020] In the drawings, the list of components represented by each reference numeral is as follows:

[0021] 1. Fixed seat, 2. Housing, 3. Feed pipe, 4. Motor, 5. Sealing bearing I, 6. Rotating rod, 7. Through hole, 8. Driving shaft, 9. Sealing bearing II, 10. Base, 11. Connecting seat, 12. Sludge spray gun, 13. Connecting pipe. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0023] Refer to Figure 1-2 As shown, a wet sludge recirculation spray incinerator includes a fixed seat 1. A housing 2 is provided on the top wall of the fixed seat 1. A feed pipe 3 is provided on the side wall of the housing 2. A motor 4 is provided on the top wall of the housing 2. Inside the housing 2 and on the top wall of the fixed seat 1, a rotating rod 6 is rotatably connected through a sealing bearing I 5. A through hole 7 communicating with the inner cavity is formed through the outer wall of the rotating rod 6. A driving shaft 8 is provided on the top wall of the rotating rod 6. The outer wall of the driving shaft 8 is rotatably connected to the inner top wall of the housing 2 through a sealing bearing II 9. The top end of the driving shaft 8 is fixedly connected to the output end of the motor 4 through a coupling. The bottom end of the rotating rod 6 extends outside the housing 2 and is provided with a base 10. A sludge spray gun 12 is provided on the outer wall of the base 10 through a connecting seat 11. A connecting pipe 13 is provided between the sludge spray gun 12 and the rotating rod 6.

[0024] Further, the outer ring of the first sealed bearing 5 is fixedly connected to the outer wall of the fixed seat 1 through a bearing seat, and the inner ring of the first sealed bearing 5 is connected to the outer wall of the rotating rod 6 by interference fit. The first sealed bearing 5 plays a role in sealing and fixing the rotating rod 6.

[0025] Further, the rotating rod 6 is a hollow structure and is connected to the connecting pipe 13. Wet sludge enters the shell 2 through the feed pipe 3, enters the rotating rod 6 and the connecting pipe 13 through the through hole 7, and is conveniently sprayed out through the sludge spray gun 12.

[0026] Further, the number of the connecting seats 11 is at least two, and they are equally distributed on the circumferential outer wall of the base 10. The motor 4 drives the driving shaft 8 to drive the rotating rod 6, the base 10, the connecting seats 11 and the sludge spray gun 12 to rotate. The wet sludge is evenly sprayed into the incinerator through the rotation of the sludge spray gun 12 for incineration treatment of the wet sludge.

[0027] For those skilled in the art, all the electrical components and parts in this case are common standard parts or parts known to those skilled in the art. Their structures and principles can all be learned by those skilled in the art through technical manuals or obtained through conventional experimental methods. As long as the models are adapted to this solution and can operate normally, all the electrical components in this case are connected to their adapted power supplies through wires, and according to the actual situation, a suitable controller is selected to meet the control requirements. For the specific connection and control sequence, reference should be made to the sequence of operations among the electrical components in the following working principle to complete the electrical connection. The detailed connection means are well-known technologies in the art, and no further description of the electrical control will be given.

[0028] A specific application of this embodiment is:

[0029] During use, the device is installed on the top wall of the incinerator through the fixed seat 1 by welding or bolting. The fixed seat 1 is placed on the outer side of the top, and structures such as the base 10 and the sludge spray gun 12 are placed inside the incinerator. The feed pipe 3 is connected to the wet sludge conveying pipeline. Wet sludge enters the shell 2 through the feed pipe 3, enters the rotating rod 6 and the connecting pipe 13 through the through hole 7, is sprayed out through the sludge spray gun 12, the motor 4 drives the driving shaft 8 to drive the rotating rod 6, the base 10, the connecting seats 11 and the sludge spray gun 12 to rotate, and the wet sludge is evenly sprayed into the incinerator through the rotation of the sludge spray gun 12 for incineration treatment of the wet sludge.

[0030] Of course, the above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Any changes, modifications, additions or substitutions made by those of ordinary skill in the art within the scope of the essence of the present invention shall fall within the protection scope of the present invention.

Claims

1. A wet sludge recirculation spray incinerator, characterized in that: It includes a fixed seat (1). A housing (2) is provided on the top wall of the fixed seat (1). A feed pipe (3) is provided on the side wall of the housing (2). A motor (4) is provided on the top wall of the housing (2). A rotating rod (6) is rotatably connected to the top wall of the fixed seat (1) and located inside the housing (2) through a first sealing bearing (5). A through hole (7) communicating with the inner cavity is formed through the outer wall of the rotating rod (6). A driving shaft (8) is provided on the top wall of the rotating rod (6). The outer wall of the driving shaft (8) is rotatably connected to the inner top wall of the housing (2) through a second sealing bearing (9). The top end of the driving shaft (8) is fixedly connected to the output end of the motor (4) through a coupling. The bottom end of the rotating rod (6) extends outside the housing (2) and is provided with a base (10). A sludge spray gun (12) is provided on the outer wall of the base (10) through a connecting seat (11). A connecting pipe (13) is provided between the sludge spray gun (12) and the rotating rod (6).

2. The wet sludge backspray incinerator according to claim 1, wherein: The outer ring of the (5) is fixedly connected to the outer wall of the fixed seat (1) through a bearing seat, and the inner ring of the (5) is in interference fit with the outer wall of the rotating rod (6).

3. The wet sludge backspray incinerator according to claim 1, characterized in that: The rotating rod (6) is of a hollow structure and is communicated with the connecting pipe (13).

4. The wet sludge backspray incinerator according to claim 1, characterized in that: The number of the connecting seats (11) is at least two, and they are equally distributed on the circumferential outer wall of the base (10).

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