Feeding device of sludge drying rotary furnace

Abstract

The utility model relates to the field of sludge treatment equipment, in particular to a sludge drying rotary furnace feeding device which comprises a rotary furnace, a feeding end is formed at one end of the rotary furnace, the feeding device further comprises a feeding sleeve arranged at the feeding end of the rotary furnace, the feeding sleeve is arranged on the outer side of the rotary furnace in a sleeved mode, and the feeding end is arranged at the feeding end of the rotary furnace. The feeding device comprises a feeding sleeve, a feeding port is formed in the top of the feeding sleeve, a material guiding cone plate is arranged on the inner side of the feeding sleeve, the inner surface of the material guiding cone plate gradually inclines inwards in the direction away from the rotary furnace, the end, facing the rotary furnace, of the feeding sleeve extends to the inner side of the rotary furnace, and the feeding sleeve is provided with an air inlet flange opening. By optimizing and improving the feeding structure for sludge to enter the rotary furnace, the existing problems are effectively solved.

Description

Technical Field

[0001] The utility model relates to the field of sludge treatment equipment, in particular to a sludge drying rotary furnace feeding device. Background Art

[0002] Sludge drying is a common sludge treatment method, and rotary kilns are a common type of sludge drying equipment. Sludge entering the rotary kiln often passes through a filter press to reduce its moisture content to approximately 50% (this value may fluctuate depending on the filter pressing process, dosing, and other treatment methods). The sludge after filtration forms a cake-like mass. To improve sludge drying efficiency, the sludge must be crushed before entering the rotary kiln.

[0003] The applicant has developed a series of equipment for sludge drying, such as the invention patent CN118561487A, entitled "An Integrated Sludge Preheating and Carbonization Treatment Device." In these prior devices, filtered sludge is fed into a rotary kiln via a feed auger. To simplify equipment and improve sludge drying efficiency, the applicant has developed a sludge drying rotary kiln feed device. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a sludge drying rotary kiln feeding device, which optimizes and improves the feeding structure of sludge entering the rotary kiln and effectively solves the existing problems.

[0005] In order to solve the above problems, the utility model provides a sludge drying rotary kiln feeding device, including a rotary kiln, a feeding end formed at one end of the rotary kiln, and the feeding device also includes a feeding sleeve arranged on the feed end portion of the rotary kiln, the feeding sleeve is arranged on the outside of the rotary kiln, a feeding port is provided on the top of the feeding sleeve, a guide cone plate is provided on the inner side of the feeding sleeve, the inner surface of the guide cone plate gradually tilts inward in the direction away from the rotary kiln, the feeding sleeve extends toward one end of the rotary kiln to the inner side of the rotary kiln, and the feeding sleeve has an air inlet flange.

[0006] Furthermore, the rotary kiln is formed with a necking section at the feeding end, and the feeding sleeve is sleeved on the necking section.

[0007] Furthermore, the inner diameter of the necking section gradually decreases in the direction toward the feed sleeve.

[0008] Furthermore, a first arc-shaped curling edge folded outward is formed on the edge of the guide cone plate facing the rotary kiln, and a second arc-shaped curling edge folded inward is formed on the edge of the necking section facing the feed sleeve.

[0009] Furthermore, the inner surface of the necking section is provided with a spirally extending material-diverting rib.

[0010] Furthermore, a feed notch is formed on the top of the guide cone plate, and a guide cylinder is provided on the inner side of the feed sleeve. The top of the guide cylinder is connected to the feed port, and the bottom extends to the inner side of the feed notch.

[0011] Furthermore, the feed sleeve is formed with the air inlet flange on the side facing away from the rotary kiln.

[0012] Furthermore, the guide cone plate is welded to the feed sleeve.

[0013] The beneficial effect of the utility model is that the feeding structure of sludge into the rotary kiln is optimized and improved, and the existing problems are effectively solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0015] Figure 1 This is a schematic structural diagram of an embodiment of the present invention at the feed end of a rotary kiln.

[0016] Figure 2 for Figure 1 A schematic diagram of a partial side cross-sectional structure of the illustrated embodiment.

[0017] Figure 3 for Figure 1 The illustrated embodiment is a schematic diagram of the partial structure of the rotary kiln on one side of the necking section.

[0018] Among them: 1. Rotary kiln; 2. Feed end; 3. Feed sleeve; 4. Feed port; 5. Guide cone plate; 6. Inlet flange; 7. Neck section; 8. First arc curling; 9. Second arc curling; 10. Feeding rib; 11. Feed notch; 12. Guide barrel. DETAILED DESCRIPTION

[0019] In order to more clearly illustrate the overall concept of the present invention, a detailed description is given below in combination with the accompanying drawings by way of examples.

[0020] It should be noted that many specific details are set forth in the following description to facilitate a full understanding of the present invention. However, the present invention can also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0021] In addition, in the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0022] In this utility model, unless otherwise expressly specified or limited, terms such as "installed," "connected," "connect," and "fixed" should be understood broadly. For example, they can refer to fixed connections, detachable connections, or integration; they can refer to direct connections or indirect connections through an intermediate medium; they can refer to internal communication between two components or an interaction between two components. However, the phrase "direct connection" indicates that the two connected entities are not connected through an intermediate structure, but are connected to form a whole through a connecting structure. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances.

[0023] In the present invention, unless otherwise clearly specified and limited, the first feature "above" or "below" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments or examples.

[0024] In this utility model, if Figures 1 to 3 As shown, a sludge drying rotary kiln feeding device is provided, including a rotary kiln 1, a feed end 2 being formed at one end of the rotary kiln 1, and characterized in that the feeding device also includes a feed sleeve 3 arranged at the feed end 2 portion of the rotary kiln 1, the feed sleeve 3 being arranged on the outside of the rotary kiln 1, a feed port 4 being provided at the top of the feed sleeve 3, a guide cone plate 5 being provided on the inner side of the feed sleeve 3, the inner surface of the guide cone plate 5 gradually tilting inward in the direction away from the rotary kiln 1, the feed sleeve 3 extending toward one end of the rotary kiln 1 to the inner side of the rotary kiln 1, and the feed sleeve 3 having an air inlet flange 6.

[0025] When the feeding device of the present invention is in use, the discharge port of the sludge crushing equipment is directly connected to the feed port 4 of the feed sleeve 3, so that the crushed sludge directly enters the feed sleeve 3. The sludge entering the feed sleeve 3 is guided by the guide cone plate 5 and then enters the rotary kiln 1. The rotary kiln 1 drives the sludge to move during the rotation process.

[0026] The feeding device of the present invention provides a feed port 4 at the top of the feed sleeve 3, allowing the crushed sludge to fall directly onto the guide cone 5. The guide cone 5 then guides the sludge obliquely into the rotary kiln 1. Compared to the method of using a conveying auger to transport the sludge into the rotary kiln 1, this can reduce the squeezing and agglomeration effects caused by the conveying auger during the sludge transportation process, thereby further improving the looseness of the sludge entering the rotary kiln 1 and further improving the sludge drying efficiency. Moreover, the present invention does not require a separate conveying auger, simplifying the structure of the rotary kiln 1 compared to existing feeding methods.

[0027] In a preferred embodiment, for the structure of the present invention, more specifically, the rotary kiln 1 is formed with a necking section 7 at the feed end 2 , and the feed sleeve 3 is sleeved on the necking section 7 .

[0028] As shown in the figure, by providing the necking section 7, the radial dimension of the feed sleeve 3 can be reduced.

[0029] In a preferred embodiment, for the structure of the present invention, more specifically, the inner diameter of the necking section 7 gradually decreases along the direction toward the feed sleeve 3 .

[0030] As shown in the figure, the sludge entering the feed sleeve 3 is guided by the guide cone plate 5 and then further guided to the inner side of the furnace body of the rotary kiln 1 through the inclined inner surface of the neck section 7. This arrangement can also prevent the sludge from entering the gap between the guide cone plate 5 and the neck section 7 during its flow into the furnace body of the rotary kiln 1.

[0031] In a preferred embodiment, the structure of the present invention is further specifically described as follows: the edge of the guide cone 5 facing the rotary kiln 1 is formed with a first, outward-folded curved edge 8, and the edge of the necking section 7 facing the feed sleeve 3 is formed with a second, inward-folded curved edge 9. As shown in the figure, the provision of the first and second curved edges 8, 9 further prevents sludge from entering the gap between the guide cone 5 and the necking section 7. Furthermore, the provision of the first curved edge 8 improves the structural stability of the edge of the guide cone 5, and the provision of the second curved edge 9 improves the structural stability of the edge of the necking section 7, thereby improving the shape stability of the guide cone 5 and the necking section 7.

[0032] In a preferred embodiment, the structure of the present invention is further specifically described as follows: the inner surface of the necking section 7 is provided with a spirally extending feed rib 10. As shown in the figure, the provision of the feed rib 10 further facilitates the rapid movement of sludge on the inner surface of the necking section 7 into the furnace body of the rotary kiln 1. The feed rib 10 also ripples the sludge as it flows through the necking section 7, making it fall more evenly and loosely.

[0033] In a preferred embodiment, the structure of the present invention is further specifically described as follows: a feed notch 11 is formed at the top of the guide cone 5, and a guide barrel 12 is provided inside the feed sleeve 3. The top of the guide barrel 12 is connected to the feed port 4, and the bottom extends to the inside of the feed notch 11. As shown in the figure, by providing the feed notch 11 at the top of the guide cone 5, sludge entering the feed port 4 can pass through the guide barrel 12 directly into the inside of the guide cone 5, thereby preventing the sludge from falling outside the guide cone 5 within the feed sleeve 3.

[0034] In the illustrated embodiment, specifically, the structure of the present invention is further illustrated by forming an air inlet flange 6 on the side of the feed sleeve 3 facing away from the rotary kiln 1. As shown in the figure, the provision of the air inlet flange 6 on the outer end surface of the feed sleeve 3 allows for connection to an external air supply pipeline, thereby facilitating air supply to the rotary kiln 1. To clean and inspect the guide cone 5, the air supply pipeline can be removed and accessed through the air inlet flange 6.

[0035] In the illustrated embodiment, with respect to the structure of the present invention, more specifically, the guide cone plate 5 is welded to the feed sleeve 3. As shown in the figure, the feed sleeve 3 can be obtained by modifying the existing end sleeve of the rotary kiln 1. Specifically, the guide cone plate 5 is welded and fixed to the inner side of the end sleeve of the rotary kiln 1, the top opening of the end sleeve of the rotary kiln 1 forms the feed port 4, and the guide cylinder 12 is welded to the inner side of the end sleeve of the rotary kiln 1. The original feed auger inlet of the end sleeve of the rotary kiln 1 is modified into an air inlet flange 6.

[0036] It should be noted that the improvement of the present invention lies in the feeding structure of the rotary kiln at the feeding end. There is no restriction on the improvement of other structures of the rotary kiln. Those skilled in the art can flexibly set them when implementing. In order to better demonstrate the structure of the guide cone plate and the necking section, Figure 3 In the figure, the rotary kiln is shown from the perspective of the necking section toward the feed sleeve after the part outside the necking section is removed.

[0037] The various embodiments in this specification are described in a progressive manner. Similar parts between the various embodiments can be referred to in conjunction with each other. Each embodiment focuses on the differences between the other embodiments. In particular, the system embodiments are generally similar to the method embodiments, so the description is relatively simple. For relevant parts, refer to the description of the method embodiments.

[0038] The foregoing is merely an embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application should all be included within the scope of the claims of the present application.

Claims

1. A sludge drying rotary kiln feeding device, comprising a rotary kiln, wherein one end of the rotary kiln is formed with a feeding end, characterized in that: The feeding device also includes a feeding sleeve arranged at the feeding end portion of the rotary kiln, the feeding sleeve being arranged on the outside of the rotary kiln, a feeding port being provided on the top of the feeding sleeve, a guide cone plate being provided on the inner side of the feeding sleeve, the inner surface of the guide cone plate gradually tilting inward in the direction away from the rotary kiln, the feeding sleeve extending toward one end of the rotary kiln to the inner side of the rotary kiln, and the feeding sleeve having an air inlet flange.

2. The sludge drying rotary kiln feeding device according to claim 1, characterized in that: The rotary kiln is formed with a necking section at the feeding end, and the feeding sleeve is sleeved on the necking section.

3. The sludge drying rotary kiln feeding device according to claim 2, characterized in that: The inner diameter of the necking section gradually decreases in a direction toward the feed sleeve.

4. The sludge drying rotary kiln feeding device according to claim 3, characterized in that: The edge of the guide cone plate facing the rotary kiln is formed with a first arc-shaped curling edge folded outward, and the edge of the necking section facing the feed sleeve is formed with a second arc-shaped curling edge folded inward.

5. The sludge drying rotary kiln feeding device according to claim 2, characterized in that: The inner surface of the necking section is provided with a spirally extending material-diverting rib.

6. The sludge drying rotary kiln feeding device according to claim 1, characterized in that: A feed notch is formed on the top of the guide cone plate, and a guide cylinder is provided on the inner side of the feed sleeve. The top of the guide cylinder is connected to the feed port, and the bottom extends to the inner side of the feed notch.

7. The sludge drying rotary kiln feeding device according to claim 1, characterized in that: The feed sleeve is formed with the air inlet flange on the side facing away from the rotary kiln.

8. The sludge drying rotary kiln feeding device according to claim 1, characterized in that: The guide cone plate is welded to the feed sleeve.

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