Still kettle for municipal sludge treatment

Abstract

The utility model discloses a still kettle for municipal sludge treatment, and belongs to the technical field of still kettles. A steam pipe and a discharge pipe are arranged at the top of a kettle body of the still kettle, a drainage assembly is arranged at the bottom of the kettle body, and a bracket and a still pressing part slidably arranged above the bracket are arranged in the kettle body; the autoclaving part comprises a first frame body and a second frame body, the first frame body is located above the second frame body, a plurality of autoclaving units are sequentially arranged in the first frame body from top to bottom, each autoclaving unit comprises a steam nozzle, a material containing layer, a vibration layer and a water drainage layer, the steam nozzles are located above the material containing layers, the vibration layers are located between the material containing layers and the water drainage layers, and the water drainage layers are located above the material containing layers. The two sides of the vibration layer are covered with waterproof cloth, the vibration layer is provided with a vibration assembly and a drainage channel, the two ends of the drainage channel are covered with permeable cloth, and the permeable cloth is located in the waterproof cloth and connected with the waterproof cloth. By optimizing the internal structure of the still kettle, the sludge can be uniformly distributed in the still kettle, and the treatment efficiency and the resource utilization rate of the sludge are improved.

Description

Technical Field

[0001] This application relates to an autoclave for municipal sludge treatment, belonging to the field of autoclave technology. Background Technology

[0002] Autoclaves are pressure vessels widely used in industries such as building materials, chemicals, pharmaceuticals, and rubber. They have a wide range of applications, and are extensively used for the autoclaving of building materials such as aerated concrete blocks, concrete pipe piles, sand-lime bricks, and fly ash bricks.

[0003] Municipal sludge is a byproduct of urban wastewater treatment. With the increase in wastewater discharge in my country, the amount of sludge produced has also increased. How to properly and safely treat and dispose of the huge volume and complex composition of sludge to reduce its volume, render it harmless, and make it a resource has become a major issue of great concern to the environmental community.

[0004] Using sludge to produce organic fertilizer, nutrient soil, or sandy soil conditioner enables the reuse of sludge and reduces pollution. Processing sludge in an autoclave removes residual salts, achieving deep dehydration, and also completely kills insect eggs and pathogens, achieving harmless treatment and resource utilization of the sludge. However, there are currently no reports on using autoclaves to treat sludge. Directly using existing autoclaves for sludge treatment presents technical problems due to internal structural incompatibility, leading to localized overheating and insufficient treatment of the sludge. Utility Model Content

[0005] To address the aforementioned issues, this application proposes an autoclave for municipal sludge treatment. By optimizing the internal structure of the autoclave, the sludge can be evenly distributed within the autoclave, thereby improving the sludge treatment efficiency and resource utilization rate.

[0006] The technical solution adopted in this utility model is as follows:

[0007] An autoclave for municipal sludge treatment includes an autoclave body and an autoclave cover sealed to both ends of the autoclave body. A steam pipe and a drain pipe are provided at the top of the autoclave body, and a drainage assembly is provided at the bottom of the autoclave body. A bracket and an autoclaving section are provided inside the autoclave body, and the autoclaving section is slidably disposed above the bracket.

[0008] The autoclaving unit includes a first frame and a second frame. The first frame is located above the second frame. Several autoclaving units are arranged sequentially from top to bottom inside the first frame. Each autoclaving unit includes a steam nozzle, a material holding layer, a vibration layer, and a drainage layer. The steam nozzle is located above the material holding layer. The vibration layer is located between the material holding layer and the drainage layer. Waterproof cloth is provided on both sides of the vibration layer. Vibration components and drainage channels are provided on the vibration layer. Water-permeable cloth is provided at both ends of the drainage channel. The water-permeable cloth is located inside the waterproof cloth and is connected to the waterproof cloth.

[0009] Optionally, one end of the steam pipe is located outside the vessel body, and the other end is located inside the vessel body. A conveying pipe is provided inside the vessel body. One end of the conveying pipe is connected to the steam pipe located inside the vessel body, and the other end extends to the top of the material layer. The steam nozzle is connected to the conveying pipe.

[0010] Optionally, a drain pipe is provided at the end of the drainage layer away from the steam pipe, and a guide plate is provided inside the drainage layer, with the end of the guide plate extending to the drain pipe.

[0011] Optionally, the vibration assembly includes a vibration chamber and a vibration motor, wherein the vibration chamber is located within the vibration layer, and the vibration motor is located within the vibration chamber on the side near the material holding layer.

[0012] Optionally, the bottom of the second frame is provided with a slide rail, and the top of the bracket is provided with a slide groove, and the slide rail is slidably disposed in the slide groove.

[0013] Optionally, the first frame body is filled with vibration damping material.

[0014] Optionally, the drainage assembly includes a drainage pipe connector, a float-type steam trap, a ball valve, and a drain valve. The drainage pipe connector is connected to the bottom outer side of the vessel body, the drain valve is connected to the end of the drainage pipe connector away from the vessel body, and the ball valve is connected between the drainage pipe connector and the float-type steam trap.

[0015] Optionally, the bottom of the vessel body is further provided with a fixed support, a movable support and an end support, wherein the fixed support is located in the middle of the vessel body, the end support is located at both ends of the vessel body, and the movable support is located between the end support and the fixed support.

[0016] Optionally, the vessel lid is provided with a swinging part and a hand-cranked reducer, and the hand-cranked reducer is hinged to the swinging part.

[0017] Optionally, a pressure gauge and a thermocouple are provided on the vessel body.

[0018] The beneficial effects that this application may produce include, but are not limited to:

[0019] The autoclave for municipal sludge treatment provided in this application features an autoclaving section that slides above a support frame, facilitating operation and improving sludge treatment efficiency through feeding and discharging. The first frame allows for uniform steam spraying onto the material, further enhancing autoclaving efficiency. A vibrating layer ensures even heating and pressure distribution during autoclaving, preventing clumping and improving the overall effect. Waterproof and permeable fabrics and drainage channels ensure timely drainage of moisture generated during autoclaving and prevent material from falling into the drainage channels, guaranteeing smooth drainage and material integrity. The drainage layer guides water flow along specific paths for efficient discharge, preventing water accumulation and blockages, thus improving drainage efficiency. This autoclave for municipal sludge treatment effectively removes residual salts from sludge, achieving deep dehydration, and thoroughly kills insect eggs and pathogens, realizing harmless treatment and resource utilization of sludge, significantly improving economic benefits. Attached Figure Description

[0020] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments of this application and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0021] Figure 1 This is a schematic diagram of the autoclave involved in the embodiments of this application;

[0022] Figure 2 This is a schematic diagram of the autoclaving section involved in an embodiment of this application;

[0023] Figure 3 This is a partial structural diagram of the vibration layer involved in an embodiment of this application;

[0024] Figure 4 This is a side view of the autoclave involved in the embodiments of this application;

[0025] Figure 5 This is a side view of the vessel body involved in the embodiments of this application;

[0026] Figure 6 This is a schematic side cross-section of the vessel body involved in the embodiments of this application;

[0027] List of components and reference numerals:

[0028] 1. Reactor body; 2. Reactor lid; 3. Steam pipe; 4. Drain pipe; 5. Bracket; 6. First frame; 7. Second frame; 8. Steam nozzle; 9. Material holding layer; 10. Vibrating layer; 11. Drainage layer; 12. Waterproof cloth; 13. Drainage channel; 14. Permeable cloth; 15. Conveying pipe; 16. Drainage pipe; 17. Guide plate; 18. Vibrating chamber; 19. Vibrating motor; 20. Slide rail; 21. Slide groove; 22. Drainage pipe connector; 23. Float-type steam trap; 24. Ball valve; 25. Drain valve; 26. Fixed support; 27. Movable support; 28. End support; 29. ​​Swinging part; 30. Hand-cranked reducer; 31. Pressure gauge; 32. Thermocouple. Detailed Implementation

[0029] To more clearly illustrate the overall concept of this application, a detailed explanation is provided below with reference to the accompanying drawings.

[0030] To better understand the above-mentioned objectives, features, and advantages of this application, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0031] Many specific details are set forth in the following description in order to provide a full understanding of this application. However, this application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of this application is not limited to the specific embodiments disclosed below.

[0032] Furthermore, it should be understood in the description of this application that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0033] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0034] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0035] In this application, unless otherwise expressly specified and limited, the "above" or "below" of the second feature can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. In the description of this specification, references to terms such as "an embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described can be combined in any suitable manner in one or more embodiments or examples.

[0036] Reference Figure 1-6 This application introduces an autoclave for municipal sludge treatment.

[0037] The autoclave for municipal sludge treatment according to this embodiment includes an autoclave body 1 and an autoclave cover 2 sealed to both ends of the autoclave body 1 to ensure that steam does not leak during the autoclaving process; a steam pipe 3 and a vent pipe 4 are provided at the top of the autoclave body 1 so that steam can enter and leave the autoclave body 1, ensuring that the autoclaving process proceeds smoothly; a drainage component is provided at the bottom of the autoclave body 1 to discharge the condensate generated during the autoclaving process in a timely manner, so as to avoid affecting the sludge treatment effect; a bracket 5 and an autoclaving section are provided inside the autoclave body 1, and the autoclaving section is slidably arranged above the bracket 5, which is convenient to operate and facilitates feeding and discharging, thereby improving the sludge treatment efficiency;

[0038] The autoclaving unit includes a first frame 6 and a second frame 7. The first frame 6 is located above the second frame 7, featuring a compact structure and multiple functions, making the autoclaving process more flexible and ensuring the autoclaving effect. Several autoclaving units are arranged sequentially from top to bottom within the first frame 6. Each autoclaving unit includes a steam nozzle 8, a material holding layer 9, a vibrating layer 10, and a drainage layer 11. The steam nozzle 8 is located above the material holding layer 9, enabling it to evenly spray steam onto the material, thereby improving autoclaving efficiency. The vibrating layer 10 is located between the material holding layer 9 and the drainage layer 11. The space between the two sides of the vibrating layer 10 is conducive to the uniform heating and pressure of the material during the autoclaving process, avoiding the formation of lumps and thus improving the autoclaving effect. The vibrating layer 10 is covered with waterproof cloth 12 on both sides. The vibrating layer 10 is equipped with a vibrating component and a drainage channel 13. The two ends of the drainage channel 13 are covered with permeable cloth 14. The permeable cloth 14 is located inside the waterproof cloth 12 and connected to the waterproof cloth 12. This can not only allow the water generated during the autoclaving process to be discharged in time, but also prevent the material from falling into the drainage channel 13, ensuring smooth drainage and the integrity of the material.

[0039] In one embodiment, one end of the steam pipe 3 is located outside the vessel body 1, and the other end is located inside the vessel body 1. A conveying pipe 15 is provided inside the vessel body 1. One end of the conveying pipe 15 is connected to the steam pipe 3 located inside the vessel body 1, and the other end extends to the top of the material layer 9. The steam nozzle 8 is connected to the conveying pipe 15. Steam is guided to the top of the material layer 9 through the conveying pipe 15 and sprayed out through the steam nozzle 8, ensuring that the steam can evenly cover the material layer 9, thereby achieving efficient heating.

[0040] In one implementation, a drain pipe 16 is provided at the end of the drainage layer 11 away from the steam pipe 3, and a guide plate 17 is provided inside the drainage layer 11. The end of the guide plate 17 extends to the drain pipe 16, which can guide the water in the drainage layer 11 to flow along a specific path so that it can be discharged smoothly, avoiding problems such as poor drainage or blockage caused by water accumulation, thereby improving drainage efficiency.

[0041] In one embodiment, the vibration assembly includes a vibration chamber 18 and a vibration motor 19. The vibration chamber 18 is located inside the vibration layer 10, and the vibration motor 19 is located inside the vibration chamber 18 on the side close to the material holding layer 9. It can efficiently transfer vibration energy to the material on the material holding layer 9, so that the material is evenly distributed on the material holding layer 9 and avoids clumping.

[0042] In one embodiment, the bottom of the second frame 7 is provided with a slide rail 20, and the top of the bracket 5 is provided with a slide groove 21. The slide rail 20 is slidably disposed in the slide groove 21, so that the autoclaving unit can move flexibly on the bracket 5, which facilitates loading and unloading. The bracket 5 provides stable support for the autoclaving unit and ensures production safety.

[0043] As one implementation, the first frame 6 is filled with vibration damping material, which can significantly reduce the transmission of vibration outside the first frame 6 and protect other parts of the autoclave from damage.

[0044] In this invention, the vibration damping material can be at least one of rubber, silicone, sponge, polyurethane soft material, and elastic plastic. The embodiments of this application do not limit the vibration damping material and can be selected according to actual needs.

[0045] In one implementation, the drainage assembly includes a drain pipe connector 22, a float-type steam trap 23, a ball valve 24, and a drain valve 25. The drain pipe connector 22 is connected to the bottom outer side of the autoclave 1, and the drain valve 25 is connected to the end of the drain pipe connector 22 away from the autoclave 1, so that dirt and impurities inside the autoclave 1 can be discharged periodically, keeping the autoclave clean and operating efficiently. The ball valve 24 is connected between the drain pipe connector 22 and the float-type steam trap 23. By adjusting the opening of the ball valve 24, precise control of the drainage flow can be achieved. The float-type steam trap 23 can sense the level of condensate and discharge it from the autoclave 1 in a timely manner, while effectively preventing steam leakage.

[0046] In one embodiment, the bottom of the vessel body 1 is also provided with a fixed support 26, a movable support 27, and an end support 28. The fixed support 26 is located in the middle of the vessel body 1, the end supports 28 are located at both ends of the vessel body 1, and the movable support 27 is located between the end supports 28 and the fixed support 26. The fixed support 26 can prevent the vessel body 1 from undergoing large displacement due to changes in internal pressure or temperature. The movable support 27 allows the vessel body 1 to have a certain displacement space during thermal expansion and contraction. The end support 28 further enhances the stability of the vessel body 1 and limits its displacement in a specific direction. This arrangement allows the vessel body 1 to remain relatively stable during thermal expansion and contraction, avoiding equipment damage due to stress concentration.

[0047] In one embodiment, the autoclave lid 2 is provided with a swinging part 29 and a hand-cranked reducer 30. The hand-cranked reducer 30 is hinged to the swinging part 29. When it is necessary to open or close the autoclave lid 2, the operator cranks the handle of the hand-cranked reducer 30, which drives the gears or worm gears inside the hand-cranked reducer 30 to drive the swinging part 29 to swing. The swinging part 29 then transmits this swinging motion to the autoclave lid 2, causing the autoclave lid 2 to swing around a fixed point, thereby realizing the opening or closing of the autoclave lid 2.

[0048] As one implementation method, a pressure gauge 31 and a thermocouple 32 are installed on the vessel body 1 to monitor the pressure and temperature changes inside the vessel body 1 in real time, so that the operator can make timely adjustments to ensure that the reaction is carried out within a safe pressure and temperature range.

[0049] When in use, municipal sludge is laid in the material layer 9, and then the autoclaving unit is pushed into the autoclave 1. At this time, the steam pipe 3 is connected to the conveying pipe 15. The handle of the hand crank reducer 30 is turned to drive the swinging part 29 to swing, thereby closing the autoclave cover 2, and the autoclaving operation can be carried out to prepare organic fertilizer, nutrient soil or sandy soil conditioner, etc.

[0050] The various embodiments in this specification are described in a progressive manner. Similar or identical parts between embodiments can be referred to mutually. Each embodiment focuses on describing the differences from other embodiments. In particular, the system embodiments are basically similar to the method embodiments, so the description is relatively simple; relevant parts can be referred to the descriptions in the method embodiments.

[0051] The above are merely embodiments of this application and are not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. An autoclave for treating municipal sludge, characterized by comprising: The kettle body is provided with a steam pipe and a discharge pipe at the top and a drain assembly at the bottom, and a bracket and a steam pressure part are arranged in the kettle body, wherein the steam pressure part is arranged above the bracket in a sliding manner; The steam pressure part comprises a first frame body and a second frame body, the first frame body is arranged above the second frame body, a plurality of steam pressure units are arranged in the first frame body in a top-down manner, each steam pressure unit comprises a steam nozzle, a material containing layer, a vibrating layer and a drainage layer, the steam nozzle is arranged above the material containing layer, the vibrating layer is arranged between the material containing layer and the drainage layer, waterproof cloth is arranged on both sides of the vibrating layer, a vibrating assembly and a drainage channel are arranged on the vibrating layer, waterproof cloth is arranged on both ends of the drainage channel, and the waterproof cloth is arranged in the waterproof cloth and connected with the waterproof cloth.

2. The autoclave for treating municipal sludge according to claim 1, wherein One end of the steam pipe is arranged outside the kettle body, and the other end is arranged inside the kettle body, a conveying pipe is arranged inside the kettle body, one end of the conveying pipe is connected with the steam pipe arranged inside the kettle body, and the other end of the conveying pipe extends above the material containing layer, and the steam nozzle is connected with the conveying pipe.

3. The autoclave for treating municipal sludge according to claim 2, wherein The drainage layer is provided with a drainage pipe at one end away from the steam pipe, and a flow guide plate is arranged in the drainage layer, and the flow guide plate extends to the drainage pipe.

4. The autoclave for treating municipal sludge according to claim 1, wherein The vibrating assembly comprises a vibrating cavity and a vibrating motor, the vibrating cavity is arranged in the vibrating layer, and the vibrating motor is arranged in the vibrating cavity and close to the material containing layer.

5. The autoclave for treating municipal sludge according to claim 1, wherein The bottom of the second frame body is provided with a sliding rail, and the top of the bracket is provided with a sliding groove, and the sliding rail is arranged in the sliding groove in a sliding manner.

6. The autoclave for treating municipal sludge according to claim 1, wherein The first frame body is filled with damping material.

7. The autoclave for treating municipal sludge according to claim 1, wherein The drain assembly comprises a drain pipe connector, a floating ball trap, a ball valve and a blowdown valve, the drain pipe connector is connected to the outside of the bottom of the kettle body, the blowdown valve is connected to one end of the drain pipe connector away from the kettle body, and the ball valve is connected between the drain pipe connector and the floating ball trap.

8. The autoclave for treating municipal sludge according to claim 1, wherein The kettle body is further provided with a fixed support, a movable support and an end support, the fixed support is arranged in the middle of the kettle body, the end support is arranged at both ends of the kettle body, and the movable support is arranged between the end support and the fixed support.

9. The retort for treating municipal sludge according to claim 1, wherein The kettle cover is provided with a swing part and a hand-operated speed reducer, and the hand-operated speed reducer is hinged to the swing part.

10. The autoclave for treating municipal sludge according to claim 1, wherein The kettle body is provided with a pressure gauge and a thermocouple.

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