High-temperature solid waste pretreatment device

Abstract

The utility model discloses a high-temperature solid waste pretreatment device which solves the problem that high-temperature solid waste in existing drum-type waste heat recovery equipment is easy to adhere to spiral blades in a drum. A double-wall hollow roller in the roller assembly is rotatably installed on the inclined face frame through a riding wheel assembly and a driving assembly, a feeding assembly and a discharging assembly are installed at the high point and the low point of the roller assembly respectively, and the double-wall hollow roller is of a hollow structure formed by arranging an inner roller and an outer roller in a sleeved mode. The inner cylinder is provided with a plurality of triangular inner convex structures which protrude towards the inner side and form local protrusions, and the outer cylinder is provided with triangular inner concave structures which protrude towards one side of the inner cylinder. According to the device, the roller is designed to be in an inclined state, and the eight triangular inward convex structures are designed on the inner wall in a matched mode, so that high-temperature solid waste materials in the roller are dynamically overturned, rolled and advanced, and the problems that the materials are detained, agglomerated and stuck in the roller are solved.

Description

Technical Field

[0001] This utility model relates to the field of high-temperature solid waste pretreatment technology, and in particular to an energy-saving and emission-reduction device for high-temperature solid waste. Background Technology

[0002] Cooling and energy-saving recovery technologies for high-temperature solid waste are key aspects of industrial waste treatment, enabling both waste heat utilization and environmental pollution reduction.

[0003] For high-temperature solid wastes exceeding 1000 degrees Celsius, such as high-temperature steel slag and high-temperature fly ash, existing technologies employ a combination of indirect heat exchange and radiative heat exchange to recover waste heat. This method eliminates the need for water treatment equipment such as sedimentation tanks, consumes less energy, and does not generate dust pollution.

[0004] Taking drum-type processing equipment as an example, the main technical problems are that high-temperature steel slag sticks to the drum and the equipment, and the slag is pushed unevenly. In order to solve this problem, various manufacturers have conducted research on different technical approaches.

[0005] For example, patent 202420591396.0 discloses a drum-type slag cooler, belonging to the technical field of drum-type slag cooler equipment. By setting spiral blades on the inner side of the drum body, with the two ends of the spiral blades respectively cooperating with the feed inlet and discharge outlet, this invention can achieve continuous material feeding and discharge, making the cooling process more uniform and efficient. However, during the process of pushing high-temperature solid waste, this spiral blade design inevitably leads to adhesion between the waste and the spiral blades, causing accumulation and blockage. Therefore, it is not a particularly good design approach. Utility Model Content

[0006] To address the shortcomings of existing technologies, this utility model provides a high-temperature solid waste pretreatment device, which solves the problem of easy adhesion between high-temperature solid waste and the spiral blades inside the drum in existing drum-type waste heat recovery equipment, and makes the solid waste propulsion smooth.

[0007] The technical solution adopted by this utility model to solve its technical problem is as follows:

[0008] A high-temperature solid waste pretreatment device includes a base, a roller assembly, a feeding assembly, a discharging assembly, and a cooling assembly. The base has an inclined frame angled to the ground. A double-walled hollow roller in the roller assembly is rotatably mounted on the inclined frame via a roller assembly and a drive assembly. The feeding assembly and the discharging assembly are installed at the high and low points of the roller assembly, respectively. The double-walled hollow roller has a hollow structure composed of an inner cylinder and an outer cylinder. The inner cylinder has multiple inwardly protruding triangular convex structures forming localized bulges, and the outer cylinder has triangular concave structures forming bulges towards the inner cylinder. The cooling assembly includes a dual-channel rotary joint, a water inlet pipe, and a water return pipe. The dual-channel rotary joint is fixedly connected to the base. The rotation axis of the dual-channel rotary joint is coaxial with the rotation axis of the double-walled hollow roller. The cold water inlet of the dual-channel rotary joint is connected to the water inlet of the hollow structure via the water inlet pipe, and the hot water inlet of the dual-channel rotary joint is connected to the drain of the hollow structure via the water return pipe.

[0009] Furthermore, the triangular concave structure is coaxial with the outer cylinder, and multiple such structures are arranged along the axial direction.

[0010] Furthermore, the number of the triangular convex structures is multiple, arranged parallel to each other, and equidistantly along the circumference of the inner cylinder.

[0011] Furthermore, the water inlet is located at the high point of the hollow structure, and the drain is located at the low point of the hollow structure.

[0012] Furthermore, the base is a steel frame structure composed of a base frame, columns, and inclined frames.

[0013] Furthermore, the roller assembly includes an upper roller and a lower roller, which support the raceway on the outer side of the outer cylinder and have a supporting and limiting action on the double-walled hollow roller in the inclined direction.

[0014] Furthermore, the drive assembly includes a motor, a chain drive, and a large gear ring, wherein the large gear ring is welded and fixed to the outer wall of the outer cylinder, the motor is mounted on the inclined frame, and drives the double-walled hollow roller to rotate through the rack and pinion drive and the large gear ring.

[0015] Furthermore, the feeding assembly includes a feeding pipe and a feeding hood, wherein the feeding pipe and the feeding hood are mounted on the base, the feeding pipe is a double-walled pipe with a built-in water-cooling cavity, the double-walled pipe has a cooling water flow path, the lower end of the feeding pipe is inserted into the high end port of the double-walled hollow roller in an inclined manner, and the feeding hood is disposed between the port of the feeding pipe and the double-walled hollow roller and provides dynamic sealing.

[0016] Furthermore, the discharge hood in the discharge assembly is mounted on the base, and a dynamic seal is formed between the discharge hood and the double-walled hollow roller.

[0017] Furthermore, the wall thickness of the inner cylinder is greater than that of the outer cylinder.

[0018] Furthermore, the water inlet pipe is a multi-pipe system consisting of a main pipe and branch pipes.

[0019] Furthermore, a discharge port is provided at the lowest point of the discharge hood.

[0020] The beneficial effects of this utility model are:

[0021] This device solves the problems of material retention, clumping, and sticking inside the drum by designing the drum in an inclined state and incorporating eight triangular convex structures on the inner wall.

[0022] This device achieves cooling of the internal material by designing the drum as a double-walled hollow structure. The triangular inner convex structure increases the contact area between the material and the inner wall, improving heat exchange efficiency and recovering the heat energy contained therein.

[0023] This device designs the outer wall of the drum as a triangular concave structure, which causes turbulence in the internal cold water medium, thereby changing the state of the water flow and further improving the heat exchange efficiency. Attached Figure Description

[0024] Figure 1 This is a diagram showing the overall structure of the device.

[0025] Figure 2 for Figure 1 Enlarged view of a section at point C.

[0026] Figure 3 for Figure 1 Enlarged view of a section at point D.

[0027] Figure 4 for Figure 1 Sectional view A-A.

[0028] Figure 5 for Figure 1 Sectional view B-B.

[0029] Figure 6 This is a view of the discharge end.

[0030] Figure 7 This is a cross-sectional view of the feed pipe.

[0031] Figure 8 This is a side view of the feed pipe.

[0032] In the picture:

[0033] 100 bases

[0034] 200 Roller assembly, 210 Double-walled hollow roller, 211 Inner cylinder, 2111 Triangular convex structure, 212 Outer cylinder, 2121 Triangular concave structure, 2122 Raceway, 213 Hollow structure, 2131 Water inlet end, 2132 Drain end, 220 Support roller assembly, 230 Drive assembly, 231 Large gear ring

[0035] 300 feed assembly, 310 feed pipe, 311 partition plate, 320 feed hood.

[0036] 400 discharge assembly, 410 discharge cover,

[0037] 500 cooling components, 510 dual-channel rotary joint, 520 inlet water pipe, 530 return water pipe. Detailed Implementation

[0038] This embodiment is described in conjunction with the appendix to the instruction manual. Figure 1 To be continued Figure 8 The structure, principle and working process of the high-temperature solid waste pretreatment device are described in detail.

[0039] A high-temperature solid waste pretreatment device includes a base 100, a roller assembly 200, a feeding assembly 300, a discharging assembly 400, and a cooling assembly 500. The base 100 is welded from I-beams and other shaped steel and consists of a base frame, columns, and an inclined frame. Viewed from the side, the base has a right-angled triangular outline. The inclined frame forms an angle of 10-30° with the ground. The roller assembly is installed on the inclined frame of the base, and the installed roller assembly is in an inclined state, having a high point and a low point. The feeding assembly is installed at the high point of the roller assembly, and the discharging assembly is installed at the low point, forming a path of feeding at the high point and discharging at the low point.

[0040] The drum assembly 200 includes a double-walled hollow drum 210, a support roller assembly 220, and a drive assembly 230. The double-walled hollow drum is a hollow structure composed of an inner cylinder 211 and an outer cylinder 212. This hollow structure 213 is an annular cavity for the flow of soft water. The interior of the double-walled hollow drum 210 is a rolling space for high-temperature solid waste. The high point of the hollow structure is the water inlet end 2131, and the low point is the drain end 2132. The water inlet end and the drain end are respectively connected to the cold water channel and hot water channel of the dual-channel rotary joint, forming a circulation path for demineralized soft water.

[0041] In this embodiment, the inner and outer walls of the double-walled hollow roller 210 are specially designed. Specifically, multiple triangular convex structures 2111 are provided on the inner cylinder wall 211. These triangular convex structures refer to a portion of the inner cylinder protruding inwards to form a local bulge. These triangular convex structures 2111, arranged on the inner wall of the roller, form convex ribs, which can improve the axial stiffness of the inner cylinder. There are eight triangular convex structures 2111, arranged parallel to each other, and the eight triangular convex structures are evenly spaced along the circumference of the inner cylinder. (Refer to...) Figure 4 The outer cylinder 212 is provided with annular triangular concave structures 2121, which are coaxially arranged with the outer cylinder, and there are multiple such triangular concave structures. These triangular concave structures 2121 form a bulge towards the inner cylinder, which generates turbulence when soft water flows in the hollow structure. This turbulence can increase the heat exchange between the soft water and the inner cylinder, thereby improving the efficiency of heat exchange.

[0042] The double-walled hollow roller is mounted on the inclined frame via two or more sets of roller assemblies on its outer side, and a drive assembly is installed between the double-walled hollow roller and the inclined frame. Under the action of the drive assembly, the double-walled hollow roller has a rolling motion.

[0043] Furthermore, the roller assembly 220 in this embodiment includes an upper roller and a lower roller. The upper and lower rollers support the raceway 2122 on the outer side of the outer cylinder and provide support for the double-walled hollow roller in the inclined direction. The aforementioned raceway is a steel ring welded to the outer side of the outer cylinder, and the two are coaxially arranged. The aforementioned drive assembly 230 includes a motor, a chain drive, and a large gear ring. The large gear ring 231 is welded and fixed to the outer wall of the outer cylinder. The motor is mounted on the inclined frame and drives the double-walled hollow roller to roll through the rack and pinion drive and the large gear ring. During the rolling process, the high-temperature solid waste inside the cylinder rolls, tumbles, and moves forward, which solves the problem of adhesion of the high-temperature solid waste.

[0044] Furthermore, in this embodiment, the wall thickness of the inner cylinder is twice that of the outer cylinder to meet the wear requirements of the inner cylinder.

[0045] The cooling assembly 500 includes a dual-channel rotary joint 510, an inlet pipe 520, and a return pipe 530. The dual-channel rotary joint 510 is mounted on a bracket, the lower end of which is fixed to a base. The rotation axis of the fixed dual-channel rotary joint is coaxial with the rotation axis of the double-walled hollow drum. The cold water inlet of the dual-channel rotary joint 510 is connected to the water inlet end of the drum through the inlet pipe. The inlet pipe 520 is a multi-pipe system consisting of a main pipe and branch pipes. The hot water inlet of the dual-channel rotary joint is connected to the drain end of the drum through the return pipe. The soft water circulation path is: dual-channel rotary joint, inlet pipe, hollow structure, drain pipe, dual-channel rotary joint.

[0046] The feeding assembly 300 is installed at a high point and includes a feeding pipe 310, a feeding shroud 320, and a bracket. The feeding pipe 310 and the feeding shroud are fixedly mounted on the bracket, which is fixed at the high point of the inclined frame. The feeding pipe 310 is a double-walled pipe with a built-in water-cooling chamber, and its structure is referenced... Figure 7 and Figure 8 The device has an internal partition plate 311, which allows soft water to flow along a designed path. Soft water is injected into the water-cooling chamber to cool the feed pipe, preventing it from overheating and thus extending the lifespan of the device, especially the feed pipe. The lower end of the feed pipe 310 is inserted at an angle into the high-end port of the double-walled hollow roller. The aforementioned feed hood 320 is positioned between the feed pipe and the port of the double-walled hollow roller, providing a dynamic seal to prevent dust leakage.

[0047] In this embodiment, the feeding assembly 300 is a stationary assembly, fixed to the base. The double-walled hollow roller is mounted on the base via a support roller assembly and a drive assembly, exhibiting relative rotation characteristics.

[0048] The discharge assembly 400 is installed at the lowest point and includes a discharge hood 410 and a bracket. The discharge hood is mounted on the bracket, which is fixed at the lowest point of the inclined frame. The discharge hood 410 is located at the lower end of the roller and is used to receive cooled solid waste from inside the roller, achieving a dynamic seal between the discharge hood and the roller. A discharge port is provided at the lowest point of the discharge hood, and the discharge port is inclined to allow the material to be discharged smoothly.

[0049] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Without departing from the spirit of the present utility model, all modifications and improvements to the present utility model by those skilled in the art should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A high-temperature solid waste pretreatment device, comprising a base, a drum assembly, a feeding assembly, a discharging assembly, and a cooling assembly, wherein the base has an inclined frame angled to the ground, and a double-walled hollow drum in the drum assembly is rotatably mounted on the inclined frame via a roller assembly and a drive assembly; the feeding assembly and the discharging assembly are respectively installed at the high point and low point of the drum assembly, characterized in that... The double-walled hollow roller has a hollow structure consisting of an inner cylinder and an outer cylinder. The inner cylinder has multiple inwardly protruding triangular convex structures that form local bulges, and the outer cylinder has triangular concave structures that bulge towards the inner cylinder. The cooling assembly includes a dual-channel rotary joint, a water inlet pipe, and a water return pipe. The dual-channel rotary joint is fixedly connected to the base, and the rotation axis of the dual-channel rotary joint is coaxial with the rotation axis of the double-walled hollow roller. The cold water port of the dual-channel rotary joint is connected to the water inlet end of the hollow structure through the water inlet pipe, and the hot water port of the dual-channel rotary joint is connected to the drain end of the hollow structure through the water return pipe.

2. The high-temperature solid waste pretreatment device according to claim 1, characterized in that, The triangular concave structure is coaxial with the outer cylinder, and multiple such structures are arranged along the axial direction.

3. The high-temperature solid waste pretreatment device according to claim 2, characterized in that, The number of the triangular convex structures is multiple, arranged parallel to each other, and evenly spaced along the circumference of the inner cylinder.

4. The high-temperature solid waste pretreatment device according to claim 1, characterized in that, The water inlet is located at the high point of the hollow structure, and the drain is located at the low point of the hollow structure.

5. A high-temperature solid waste pretreatment device according to claim 1, characterized in that, The base is a steel frame structure consisting of a base frame, columns, and inclined frames.

6. The high-temperature solid waste pretreatment device according to claim 1, characterized in that, The roller assembly includes an upper roller and a lower roller. The upper and lower rollers support the raceway on the outer side of the outer cylinder and have a supporting and limiting action on the double-walled hollow roller in the tilting direction.

7. A high-temperature solid waste pretreatment device according to claim 1, characterized in that, The drive assembly includes a motor, a chain drive, and a large gear ring. The large gear ring is welded and fixed to the outer wall of the outer cylinder. The motor is mounted on the inclined frame and drives the double-walled hollow roller to rotate through the rack and pinion drive and the large gear ring.

8. A high-temperature solid waste pretreatment device according to claim 1, characterized in that, The feeding assembly includes a feeding pipe and a feeding hood. The feeding pipe and the feeding hood are mounted on a base. The feeding pipe is a double-walled pipe with a built-in water-cooling chamber and has a cooling water flow path. The lower end of the feeding pipe is inserted into the high end port of the double-walled hollow roller at an angle. The feeding hood is disposed between the port of the feeding pipe and the port of the double-walled hollow roller and provides dynamic sealing.

9. A high-temperature solid waste pretreatment device according to claim 1, characterized in that, The discharge hood in the discharge assembly is mounted on the base, and a dynamic seal is formed between the discharge hood and the double-walled hollow roller.

10. A high-temperature solid waste pretreatment device according to claim 1, characterized in that, The inner cylinder has a wall thickness greater than the outer cylinder.

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