Continuous and uniform feeding rotary furnace
By using a rotary discharge port, a material feeding device with a drive roller, and a double-stage water seal structure, the problems of uneven material distribution and insufficient air tightness are solved, thereby improving pyrolysis efficiency and product quality, and reducing equipment maintenance costs and energy consumption.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-29
- Publication Date
- 2026-04-07
AI Technical Summary
Traditional feeding devices result in uneven material distribution, large temperature differences within the furnace, and insufficient airtightness, which affects pyrolysis efficiency and product quality, and also lead to high equipment maintenance costs.
The material feeding device, which combines a rotary discharge port with a drive roller and a double-stage water seal structure, achieves uniform feeding and high airtightness. The furnace cover is driven to rotate by a conductive ring and a geared motor to ensure sealing and uniform feeding.
It significantly improves pyrolysis efficiency by 35%-45%, increases pyrolysis gas content by 15%-20%, reduces energy consumption by 30%-40%, extends equipment life by 30%, reduces maintenance costs, and meets environmental protection requirements.
Smart Images
Figure CN224087578U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to solid waste high temperature pyrolysis processing technical field, specifically to a kind of continuous uniform feeding rotary furnace. BACKGROUND
[0002] In the garbage high temperature pyrolysis processing industry, feeding link is crucial to the whole pyrolysis process. The traditional feeding device generally lacks effective raking structure. In actual operation, about 75% of pyrolysis furnace is caused by uneven material distribution, and the temperature field in the furnace is greatly different, which leads to obvious fluctuation of pyrolysis gas, pyrolysis oil and other products. In addition, the pyrolysis furnace has very high air tightness requirement when running, but the existing sealing method of furnace cover and furnace body is simple single-stage sealing, which is difficult to resist the erosion of high temperature and corrosive gas. The fixed drop port design makes the feeding coverage limited, and the material cannot be uniformly dispersed to each area in the furnace, further aggravating the uneven feeding problem, which seriously restricts the improvement of pyrolysis efficiency. SUMMARY
[0003] To solve the above problems, the utility model aims at providing a kind of continuous uniform feeding rotary furnace.
[0004] To achieve the above purpose, the technical scheme of the utility model is as follows: a kind of continuous uniform feeding rotary furnace, including furnace body and the furnace cover being set at the top of furnace body, the furnace cover is supported on the annular furnace cover support frame being set at the top of furnace body, and the furnace cover is driven on the furnace cover support frame by driving device and rotates, the furnace cover is provided with drop port being communicated with the inside of furnace body, the drop port is eccentrically arranged on the furnace cover, the top of drop port is provided with raking shell body that is penetrated up and down, driving roller is arranged in raking shell body, and the driving roller is parallel and adjacent, the periphery of driving roller is respectively fixed with several conical raking teeth being perpendicular to the surface of driving roller, one end driving shaft of each driving roller is drivingly connected with driving device, the upper end of raking shell body is provided with feeding hopper, one side of furnace body is provided with pyrolysis flue gas outlet, and feeding hopper is coaxially arranged with furnace body.
[0005] Further, the upper edge of furnace cover support frame is respectively provided with inner and outer two circles of inner water seal groove and outer water seal groove, the inner top of furnace cover is sequentially provided with annular inner sealing insert and outer sealing insert from inside to outside, the inner sealing insert is located in inner water seal groove, the outer sealing insert is located in outer water seal groove, and inner water seal groove and outer water seal groove contain sealing water that is over the lower end of inner sealing insert and outer sealing insert.
[0006] The outer top edge of outer water seal groove is fixed with sealing rotary bearing, and the periphery of sealing rotary bearing is fixedly connected with the edge of furnace cover.
[0007] Furthermore, the edge between the inner water seal trough and the outer water seal trough is lower than the outer edges of both. A vertical overflow pipe is installed inside the inner water seal trough, and the upper end of the overflow pipe is at the same height as the edge between the inner and outer water seal troughs. A water supply pipe connected to the outside is installed at the bottom of the outer water seal trough.
[0008] Furthermore, a gear ring is fixed to the outer perimeter of the furnace cover, and a geared motor is fixed to the outer wall of the furnace cover support frame, with the drive gear of the geared motor meshing with the gear ring.
[0009] Furthermore, multiple conductive rings are arranged around the outer perimeter of the upper surface of the furnace cover. The conductive rings are laid on the insulating rings, and each conductive ring is electrically connected to each drive reduction motor through a wire. Each conductive ring is also electrically connected to a conductive carbon brush on one side of the furnace cover support frame.
[0010] Furthermore, the bottom of the furnace body is supported by a base, and a pull-out residue box is installed inside the base.
[0011] This utility model features a rotating furnace cover supported on an annular furnace cover support frame at the top of the furnace body. The furnace cover is driven to rotate on the furnace cover support frame by a drive device. The furnace cover has a material inlet that communicates with the interior of the furnace body, and the material feeding housing has parallel and adjacent drive rollers. Several conical material feeding teeth perpendicular to the surface of the drive rollers are fixed to the periphery of the drive rollers. Through innovative structural design and technical optimization, uniform and efficient feeding is achieved, significantly improving the airtightness of the furnace body. This improves the efficiency of high-temperature pyrolysis of waste, enhances the quality of pyrolysis products, reduces energy consumption and environmental pollution, and provides a more reliable and economical solution for the high-temperature pyrolysis treatment industry of waste.
[0012] With the above settings, this utility model has the following beneficial effects:
[0013] The feeding hopper and the pyrolysis furnace body are coaxial, and the innovative drive roller forms a material feeding device that works in conjunction with each other to effectively prevent material accumulation and ensure that the material enters the pyrolysis furnace evenly. Actual tests have shown that the pyrolysis efficiency can be increased by 35%-45%, and the content of combustible gases (hydrogen, methane, etc.) in the pyrolysis products can be increased by 15%-20%. In industrial applications, it can directly replace some high-priced raw materials, significantly improving economic benefits.
[0014] The rotary feeding port and furnace cover system enables comprehensive feeding into the furnace, optimizes material distribution, stabilizes the temperature field inside the furnace, and effectively reduces local overheating or overcooling when processing different types of waste (such as mixed waste of plastics, kitchen waste, and textiles), extending the service life of the pyrolysis furnace and reducing equipment maintenance costs by about 30%.
[0015] The dual-stage water-sealing structure significantly improves the furnace's airtightness, effectively reducing heat loss by 30%-40%. Simultaneously, it effectively prevents the leakage of harmful gases, resulting in a marked improvement in the surrounding air quality and meeting increasingly stringent environmental protection requirements.
[0016] The overall device has a compact and reasonable structure, stable and reliable operation, and is easy to operate and maintain. It adopts a modular design concept, which facilitates the installation, commissioning and maintenance of the equipment, reduces the operating cost of the equipment, and provides an efficient, environmentally friendly and economical feeding solution for high-temperature pyrolysis treatment of waste. Attached Figure Description
[0017] The present invention will now be further described with reference to the accompanying drawings.
[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;
[0019] Figure 2 This is a schematic diagram of the cross-sectional structure of the present invention;
[0020] Figure 3 This is a top view of the structure of this utility model;
[0021] Figure 4 This is an enlarged structural schematic diagram of the inner and outer water seal grooves of this utility model. Detailed Implementation
[0022] like Figures 1-4 As shown, a continuous uniform feeding rotary furnace includes a furnace body 1 and a furnace cover 2 disposed on the top of the furnace body 1. The furnace cover 2 is rotatably supported on an annular furnace cover support frame 3 disposed on the top of the furnace body 1, and the furnace cover 2 is driven to rotate on the furnace cover support frame 3 by a driving device. The furnace cover 2 is provided with a material discharge port 4 communicating with the interior of the furnace body 1. The material discharge port 4 is eccentrically disposed on the furnace cover 2. The top of the material discharge port 4 is provided with a vertically penetrating material feeding shell 5. The material feeding shell 5 is provided with parallel and adjacent drive rollers 6. Several conical material feeding teeth 7 perpendicular to the surface of the drive rollers 6 are fixed on the periphery of the drive rollers 6. One end of the drive shaft of each drive roller 6 is connected to the driving device for transmission. The upper end of the material feeding shell 5 is provided with a feed hopper 8. A pyrolysis flue gas outlet 9 is provided on one side of the furnace body 1, and the feed hopper 8 is coaxially disposed with the furnace body 1. The furnace cover 2 and key connecting components are made of special alloy materials or new composite materials that are resistant to high temperature, corrosion and have high strength.
[0023] To ensure airtightness and reliability of the sealing components, the upper edge of the furnace cover support frame 3 is provided with inner and outer water seal grooves 10 and 11, respectively. The top of the furnace cover 2 has annular inner sealing plates 12 and 13 arranged sequentially from the inside out. The inner sealing plate 12 is located within the inner water seal groove 10, and the outer sealing plate 13 is located within the outer water seal groove 11. Both the inner and outer water seal grooves 10 and 11 are filled with sealing water that covers the lower ends of the inner and outer sealing plates 12 and 13. To facilitate water injection into the inner and outer water seal grooves 10 and 11, the inner water seal groove... The edge between the inner water seal 10 and the outer water seal 11 is lower than the outer edges of both. A vertical overflow pipe 15 is installed inside the inner water seal 10. The upper end of the overflow pipe 15 is at the same height as the edge between the inner water seal 10 and the outer water seal 11. A water supply pipe 16 connected to the outside is installed at the bottom of the outer water seal 11. The overflow pipe 15 can discharge more water to prevent the inner water seal 10 and the outer water seal 11 from overflowing from the edge. Specifically, the inner water seal 10 and the outer water seal 11 are made of special anti-corrosion materials. Their width and depth are optimized and designed to be 60-90mm and 90-130mm respectively. The insertion depth of each water seal plate is 3 / 4 of the depth of the water seal 10. They are made of high-strength and wear-resistant materials. The water supply pipe 16 is equipped with an intelligent water injection control system that can automatically adjust the water injection volume according to the pressure and temperature inside the furnace. The overflow pipe 15 adopts a high-precision liquid level control device to ensure a stable and reliable sealing effect and effectively prevent heat loss and leakage of harmful gases.
[0024] A sealed rotating bearing 14 is fixed to the top edge of the outer side of the outer water seal trough 11. The outer periphery of the sealed rotating bearing 14 is fixedly connected to the edge of the furnace cover 2. A gear ring 17 is fixed to the outer periphery of the furnace cover 2. A geared motor 18 is fixed to the outer wall of the furnace cover support frame 3. The drive gear of the geared motor 18 meshes with the gear ring 17. The rotation drive system of the geared motor 18 of the furnace cover 2 adopts frequency conversion speed regulation technology, and the rotation speed is 0.5-2 revolutions per minute. The cross-sectional area of the material discharge port 4 is 1 / 10 of the cross-sectional area of the pyrolysis furnace body. 1 / 5, feeding in coordination with the drive roller 6; in order to enable the drive roller 6 to rotate when the furnace cover 2 rotates, multiple conductive rings 19 are arranged around the upper surface of the furnace cover 2. The conductive rings 19 are laid on the insulating ring. Each conductive ring 19 is electrically connected to each drive reduction motor 20 through a wire. Each conductive ring 19 is electrically connected to the conductive carbon brush on one side of the furnace cover support frame 3, which is similar to the current conductive slip ring structure. The bottom of the furnace body 1 is supported by a base 21, and a pull-out residue box is set inside the base 21.
[0025] The working principle of this utility model is as follows: Feeding stage: Waste enters from the upper port of the feeding hopper 8 and smoothly reaches the feeding transition section of the lower port of the feeding hopper 8 to reach the feeding shell 5.
[0026] Material feeding stage: Start the drive reduction motor 20, drive the drive shaft, and then drive the drive roller 6 to rotate. The conical feeding teeth 7 evenly feed the material located in the feeding transition section and the feeding shell 5 into the pyrolysis furnace.
[0027] Rotary feeding stage: The geared motor 18 starts and drives the furnace cover 2 to rotate 360 degrees around the furnace body axis through the gear ring 17. During the rotation of the furnace cover 2, the discharge port 4 is eccentrically set on the furnace cover 2 and rotates accordingly to realize full feeding into the pyrolysis furnace.
[0028] Sealing stage: Water is injected into the inner water seal tank 10 and the outer water seal tank 11 by the water filling pipe 16. The intelligent water injection control system automatically adjusts the water injection volume according to the pressure and temperature inside the furnace. The high-precision liquid level control device of the overflow pipe 15 ensures that the water level in the water seal tank is stable. The inner sealing plate 12 and the outer sealing plate 13 form an effective seal to prevent heat loss and leakage of harmful gases.
[0029] The residue and ash after combustion fall into the pull-out residue box inside the base 21, and the heat discharged from the pyrolysis flue gas outlet 9 can be used as a heat source.
[0030] The above description is merely an illustrative embodiment of this utility model and is not intended to limit the scope of this utility model. Any equivalent changes and modifications made by those skilled in the art without departing from the concept and principles of this utility model should fall within the protection scope of this utility model.
Claims
1. A continuously uniformly fed rotary furnace, comprising a furnace body (1) and a furnace cover (2) disposed on the top of the furnace body (1), characterized in that: The furnace cover (2) is rotated and supported on the annular furnace cover support frame (3) set on the top of the furnace body (1), and the furnace cover (2) is driven to rotate on the furnace cover support frame (3) by the drive device. The furnace cover (2) is provided with a material discharge port (4) that communicates with the inside of the furnace body (1), and the material discharge port (4) is eccentrically set on the furnace cover (2). The top of the material discharge port (4) is provided with a material feeding shell (5) that runs vertically through the furnace body (1). The material feeding shell (5) is provided with parallel and adjacent drive rollers (6). The outer periphery of the drive rollers (6) is fixed with a number of conical material feeding teeth (7) that are perpendicular to the surface of the drive rollers (6). One end of each drive roller (6) is connected to the drive device for transmission. The upper end of the material feeding shell (5) is provided with a feed hopper (8). The side of the furnace body (1) is provided with a pyrolysis flue gas outlet (9), and the feed hopper (8) is coaxially set with the furnace body (1).
2. The continuously and uniformly fed rotary furnace as described in claim 1, characterized in that: The upper edge of the furnace cover support frame (3) is provided with inner and outer water seal grooves (10) and outer water seal grooves (11). The inner top of the furnace cover (2) is provided with an inner sealing plate (12) and an outer sealing plate (13) from the inside to the outside. The inner sealing plate (12) is located in the inner water seal groove (10), and the outer sealing plate (13) is located in the outer water seal groove (11). The inner water seal groove (10) and the outer water seal groove (11) are filled with sealing water that covers the lower end of the inner sealing plate (12) and the outer sealing plate (13).
3. The continuously and uniformly fed rotary furnace as described in claim 1, characterized in that: A sealed rotating bearing (14) is fixed to the top edge of the outer side of the outer water seal trough (11), and the outer periphery of the sealed rotating bearing (14) is fixedly connected to the edge of the furnace cover (2).
4. The continuously and uniformly fed rotary furnace as described in claim 2, characterized in that: The edge between the inner water seal trough (10) and the outer water seal trough (11) is lower than the outer edge of both. The inner water seal trough (10) is provided with a vertical overflow pipe (15). The upper end of the overflow pipe (15) is at the same height as the edge between the inner water seal trough (10) and the outer water seal trough (11). The bottom of the outer water seal trough (11) is provided with a water supply pipe (16) that communicates with the outside.
5. A continuously and uniformly fed rotary furnace as described in claim 1, characterized in that: A gear ring (17) is fixed around the furnace cover (2), and a geared motor (18) is fixed on the outer wall of the furnace cover support frame (3). The drive gear of the geared motor (18) meshes with the gear ring (17).
6. The continuously and uniformly fed rotary furnace as described in claim 1, characterized in that: Multiple conductive rings (19) are arranged around the upper surface of the furnace cover (2). The conductive rings (19) are laid on the insulating ring. Each conductive ring (19) is electrically connected to each drive reduction motor (20) through a wire. Each conductive ring (19) is electrically connected to the conductive carbon brush on one side of the furnace cover support frame (3).
7. A continuously and uniformly fed rotary furnace as described in claim 1, characterized in that: The bottom of the furnace body (1) is supported by a base (21), and a pull-out residue box is provided inside the base (21).