A feeding structure for a detoxification device
By designing a feeding structure in the detoxification device, including a feeding shell, a circulating air duct, and a feeding pipe, and by using an upwardly arranged feeding port and a uniform air cap, the problem of uneven fly ash mixing was solved, and uniform mixing of fly ash and gas was achieved, thereby improving the detoxification effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- YUYUAN (LIAONING) ENVIRONMENTAL PROTECTION TECH CO LTD
- Filing Date
- 2025-08-25
- Publication Date
- 2026-07-03
AI Technical Summary
The existing detoxification devices do not mix fly ash evenly enough, which affects the detoxification effect.
Design a feeding structure for a detoxification device, including a feeding shell, a circulating air duct, and a feeding pipe. The feeding port is arranged upward and equipped with a uniform air cap and a guide cone to ensure uniform distribution of fly ash. Through the reasonable coordination between the circulating air duct and the discharge port, uniform mixing of fly ash and gas is achieved.
It improves the uniformity and mixing effect of fly ash, enhances the processing efficiency of the detoxification device, ensures full contact between fly ash and gas, and improves the detoxification effect.
Smart Images
Figure CN224449544U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of solid waste treatment, and in particular to a feed structure for a detoxification device. Background Technology
[0002] With the development of urbanization, the amount of waste generated is increasing, necessitating waste treatment. Fly ash from municipal solid waste incineration contains various toxic and harmful substances, such as heavy metals and dioxins. These pollutants pose a significant threat to human health. Dioxins, in particular, are highly toxic, persistent, and bioaccumulative, and are classified as a Group 1 carcinogen by the International Agency for Research on Cancer. Therefore, the effective treatment of dioxins is a pressing problem that needs to be solved.
[0003] Currently, the main methods for treating dioxins include adsorption and catalytic decomposition, which can solidify or reduce dioxin emissions. Dioxin treatment requires the use of a detoxification device. This device typically has a blower at its inlet to blow fly ash into the device for dioxin detoxification.
[0004] Regarding the aforementioned technologies, the inventors believe that the feeding method of directly blowing fly ash into the detoxification device using a blower does not achieve an ideal degree of mixing and homogenization between air and fly ash, which will affect the detoxification effect of the detoxification device on fly ash. Utility Model Content
[0005] In order to improve the homogenization of fly ash, this application provides a feeding structure for a detoxification device.
[0006] The feeding structure of the detoxification device provided in this application adopts the following technical solution:
[0007] A feeding structure for a detoxification device includes a feeding shell, a circulating air duct connected to the bottom of the feeding shell, and a feeding pipe passing through the circulating air duct; the end of the feeding pipe has an upwardly arranged discharge port, and the top of the feeding pipe is provided with a material equalization hood, the material equalization hood including a hood top plate covering the top of the feeding pipe and a support connecting rod connecting the hood top plate and the feeding pipe; a circumferentially arranged material equalization gap is formed between the hood top plate and the end of the feeding pipe.
[0008] By adopting the above technical solution, a feeding structure consisting of a feeding shell, a circulating air duct, and a feeding pipe is set up. The feeding port is arranged upwards, and a material equalization gap is formed with the material equalization hood at the top of the feeding pipe, which can make the fly ash evenly distributed in the circumference and mix the fly ash with the gas in the circulating air duct evenly, which is conducive to the detoxification treatment of fly ash by the detoxification device.
[0009] Optionally, the lower surface of the top plate of the wind cap is a downward-opening guide cone surface; the axis of the guide cone surface coincides with the axis of the discharge port.
[0010] By adopting the above technical solution, the fly ash discharged from the feed pipe outlet can be evenly dispersed and fall along the cone surface under the action of the guide cone surface on the lower surface of the top plate of the wind cap. The coincidence of the axes improves the symmetry and uniformity of material dispersion, so that the material can flow out more evenly from the circumferentially arranged material distribution gaps, thereby improving the uniformity of fly ash feeding.
[0011] Optionally, the top cone angle of the guide cone is 90° to 150°.
[0012] By adopting the above technical solution, the top cone angle of the guide cone is 90° to 150°. The specific range of top cone angles enables the material to be evenly distributed along the circumferential material distribution gap after being sprayed from the discharge port, under the action of the guide cone, resulting in more reasonable fly ash dispersion and improved uniformity of fly ash distribution.
[0013] Optionally, the outer edge of the top plate of the hood is lower than the discharge port.
[0014] By adopting the above technical solution, the outer edge of the top plate of the hood is lower than the height of the discharge port, so that when the fly ash flows out along the guide cone surface of the top plate of the hood, it is not easily carried back into the discharge port by the external airflow, thus improving the stability of the fly ash output from the discharge port.
[0015] Optionally, the axis of the upper opening of the circulating air duct coincides with the axis of the discharge port, and the ratio of the diameter of the upper opening of the circulating air duct to the diameter of the discharge port is between 3 and 8.
[0016] By adopting the above technical solution, the position and size of the circulating air duct and the discharge port are more reasonably matched, so that the material can be smoothly mixed with the gas in the circulating air duct after being discharged from the discharge port, thereby improving the homogenization and conveying effect of fly ash.
[0017] Optionally, the width of the material distribution gap is 30-80 mm.
[0018] By adopting the above technical solution, setting the material distribution gap width to 30-80mm can ensure that fly ash is discharged evenly within a suitable gap, reducing the impact of poor discharge or excessively fast discharge on the feeding effect.
[0019] Optionally, a mixing trough extends upward from the upper opening of the circulating air duct; the cross-section of the mixing trough increases along the fly ash conveying path and the trough edge of the mixing trough is sealed to the feed housing.
[0020] By adopting the above technical solution, the mixing tank extending upward at the upper opening of the circulating air duct allows the fly ash and gas to be fully mixed, improving the homogenization effect of the fly ash and making the fly ash transport smoother.
[0021] Optionally, the top of the hood top plate is provided with a sloping surface for guiding ash; and the bottom of the circulating air duct is provided with a ash cleaning hole.
[0022] By adopting the above technical solution, the top of the vent cap is equipped with a sloping guide surface, which reduces the probability of fly ash entering the feed pipe or accumulating on the vent cap top after falling. The cleaning holes at the bottom of the circulating air duct facilitate the cleaning of fly ash accumulated inside the circulating air duct. Furthermore, the cleaning holes can also be used to allow air to enter during device startup, which is beneficial for the normal operation of the device.
[0023] Optionally, the dust removal hole is also equipped with a dust-blocking cover.
[0024] By adopting the above technical solution, the dust removal hole is equipped with a dust baffle cover, which can not only make the fly ash slide off by using the ash guiding slope, but also discharge the accumulated fly ash through the dust removal hole, and also prevent external dust from entering the circulating air duct and affecting the normal operation of the device.
[0025] In summary, this application includes at least one of the following beneficial technical effects:
[0026] 1. A feeding structure for a detoxification device, wherein an upward feeding port is provided, a material equalization hood is provided in the feeding pipe, and a material equalization gap is provided between the top plate of the material equalization hood and the end of the feeding pipe, which can make the fly ash evenly dispersed, improve the homogenization effect of the fly ash, and facilitate the subsequent detoxification of the fly ash.
[0027] 2. By having the upper opening of the circulating air duct coaxial with the discharge port and maintaining a certain aperture ratio between the two, the fly ash and the gas sprayed from the circulating air duct can be fully mixed, which improves the homogenization of fly ash and makes the fly ash feeding more stable.
[0028] 3. By setting up a ash-guiding slope on the top plate of the hood, a dust-cleaning hole at the bottom of the circulating air duct, and a dust-blocking cover on the dust-cleaning hole, the falling fly ash can slide down through the ash-guiding slope and be cleaned at the dust-cleaning hole. The dust-blocking cover also reduces the exchange of substances between the inside and outside of the detoxification device, thus improving the sealing effect. Attached Figure Description
[0029] Figure 1 This is a schematic diagram of the feeding structure in an embodiment of this application.
[0030] Figure 2 This is a cross-sectional schematic diagram of the feeding structure in an embodiment of this application.
[0031] Figure 3 This is a schematic diagram of the feed pipe in an embodiment of this application.
[0032] Explanation of reference numerals in the attached drawings: 1. Feeding shell; 2. Circulating air duct; 21. Mixing tank; 22. Air outlet; 23. Feeding hole; 24. Dust removal hole; 25. Dust removal pipe; 26. Dust baffle cover; 3. Feeding pipe; 31. Discharge port; 32. Material equalization hood; 321. Top plate of hood; 3211. Guide cone surface; 3212. Material equalization gap; 3213. Dust guiding slope; 322. Support rod. Detailed Implementation
[0033] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.
[0034] This application discloses a feeding structure for a detoxification device. (Refer to...) Figure 1 The feeding structure of a detoxification device includes a feeding shell 1, a circulating air duct 2 connected to the bottom of the feeding shell 1, and a feeding pipe 3 passing through the circulating air duct 2.
[0035] Reference Figure 1 The feed housing 1 is a vertically arranged strip-shaped housing. A mixing trough 21 extends upwards from the upper opening of the circulating air duct 2. The bottom edge of the feed housing 1 is sealed to the groove edge of the mixing trough 21 extending upwards from the upper opening of the circulating air duct 2. The cross-section of the mixing trough 21 gradually increases along the fly ash conveying path, i.e., in the vertically upward direction. This allows the gas output from the circulating air duct 2 and the fly ash output from the feed pipe 3 to mix better in the mixing trough 21. The inclination of the groove surface of the mixing trough 21 towards the central axis also helps to concentrate the falling fly ash.
[0036] Reference Figure 2 The circulating air duct 2 has a vertically upward-facing outlet 22 at its end, an inlet hole 23 for the feed pipe 3 to pass through in its wall, and a dust removal hole 24 at its bottom. After passing through the inlet hole 23, the feed pipe 3 has a vertically upward-facing outlet 31 at its end. The outlet 22 and the outlet 31 are coaxially arranged, and the ratio of their diameters is 3 to 8. In this embodiment, the diameter of the outlet 22 is 1000 mm, the diameter of the outlet 31 is 200 mm, and the ratio of their diameters is 5.
[0037] Reference Figure 2 and Figure 3 A material distribution hood 32 is provided at the top of the feed pipe 3. The material distribution hood 32 includes a hood top plate 321 that covers the top of the feed pipe 3 and a support rod 322 connecting the hood top plate 321 and the feed pipe 3. The support rod 322 is symmetrically arranged, with one end connected to the pipe wall of the feed pipe 3 and the other end connected to the lower surface of the hood top plate 321. The hood top plate 321 is conical, and the outer edge of the cone is lower than the discharge port 31.
[0038] Reference Figure 3The lower surface of the top plate 321 of the hood is a downward-opening guide cone 3211. The top cone angle of the guide cone 3211 is 90° to 150°, and the central axis of the guide cone 3211 coincides with the central axis of the discharge port 31. After the fly ash is ejected from the discharge port 31, it is blocked by the guide cone 3211 and moves along the guide cone 3211 towards the edge of the top plate 3211. In this embodiment, the top cone angle of the guide cone 3211 is 120°.
[0039] Reference Figure 2 A circumferentially arranged material distribution gap 3212 is formed between the top plate 321 of the hood and the end of the feed pipe 3. Since the central axis of the guide cone 3211 coincides with the central axis of the discharge port 31, the material distribution gap 3212 is a ring surrounding the outer circumference of the discharge pipe, and the width of the ring is 30-80 mm. In this embodiment, the width of the material distribution gap 3212 is 40 mm. The fly ash moves along the guide cone 3211 towards the edge of the top plate 321 of the hood, flows out through the material distribution gap 3212, and then moves upward together under the drive of the gas at the outlet 22.
[0040] Reference Figure 2 and Figure 3 The top of the hood plate 321 is provided with a dust guiding slope 3213, with the highest point at the central axis, gradually decreasing in elevation towards the surrounding areas. The surface of the dust guiding slope 3213 is smooth, allowing fly ash to slide down along it and land at the cleaning hole 24 at the bottom of the circulating air duct 2 when it falls on it. A cleaning pipe 25 extends vertically downward from the outer edge of the cleaning hole 24, and a dust baffle 26 is provided at the lower end of the cleaning pipe 25. The dust baffle 26 is threadedly connected to the cleaning pipe 25. When cleaning is not required, the dust baffle 26 covers the end of the cleaning pipe 25, preventing fly ash from being discharged. When the detoxification device needs to be activated or cleaning is required, the dust baffle 26 is opened, allowing the air needed for the device to enter through the cleaning port during initial startup, and allowing the fly ash remaining at the bottom of the circulating air duct 2 to be discharged through the cleaning port.
[0041] Reference Figures 1 to 3 The implementation principle of the feeding structure of the detoxification device in this application embodiment is as follows: Fly ash is introduced into the feeding structure through the feeding pipe 3, blocked by the uniform air cap 32, and moves along the guide cone surface 3211 to the outside of the edge. The air outlet 22 outputs gas vertically upward, carrying the fly ash upward and conveying it. During the conveying process, they are mixed with each other, and the fly ash is evenly distributed in the gas. After detoxification, the fly ash falls on the ash guide inclined surface 3213 and the mixing tank 21 and slides downward, converging at the ash cleaning hole 24. The ash blocking cover 26 is opened to clean the fly ash.
[0042] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.
Claims
1. A feeding structure for a detoxification device, characterized in that, It includes a feeding housing (1), a circulating air duct (2) connected to the bottom of the feeding housing (1), and a feeding pipe (3) passing through the circulating air duct (2); the end of the feeding pipe (3) has an upwardly arranged outlet (31), and the top of the feeding pipe (3) is provided with a material equalization hood (32). The material equalization hood (32) includes a hood top plate (321) covering the top of the feeding pipe (3) and a support connecting rod (322) connecting the hood top plate (321) and the feeding pipe (3); a circumferentially arranged material equalization gap (3212) is formed between the hood top plate (321) and the end of the feeding pipe (3).
2. The feeding structure of the detoxification device according to claim 1, characterized in that, The lower surface of the top plate (321) of the wind cap is a downward-opening guide cone (3211); the axis of the guide cone (3211) coincides with the axis of the discharge port (31).
3. The feeding structure of the detoxification device according to claim 2, characterized in that, The top cone angle of the guide cone surface (3211) is 90° to 150°.
4. The feeding structure of the detoxification device according to claim 2, characterized in that, The outer edge of the top plate (321) of the wind cap is lower than the discharge port (31).
5. The feeding structure of the detoxification device according to claim 1, characterized in that, The axis of the upper opening of the circulating air duct (2) coincides with the axis of the discharge port (31), and the ratio of the aperture of the upper opening of the circulating air duct (2) to the aperture of the discharge port (31) is between 3 and 8.
6. The feeding structure of the detoxification device according to claim 1, characterized in that, The width of the material distribution gap (3212) is 30-80 mm.
7. The feeding structure of the detoxification device according to claim 1, characterized in that, The upper opening of the circulating air duct (2) extends upward into a mixing trough (21); the cross-section of the mixing trough (21) increases along the fly ash conveying path and the trough edge of the mixing trough (21) is sealed to the feed housing (1).
8. The feeding structure of the detoxification device according to claim 1, characterized in that, The top of the hood top plate (321) is provided with a dust guiding slope (3213); the bottom of the circulating air duct (2) is provided with a dust cleaning hole (24).
9. The feeding structure of the detoxification device according to claim 8, characterized in that, The cleaning hole (24) is also equipped with a dust-blocking cover (26).