Waste incineration tail gas treatment energy-saving device

Abstract

The utility model discloses a waste incineration tail gas treatment energy-saving device which comprises a box body (1), an upper cavity (2) and a lower cavity (3) are arranged in the box body (1), a partition plate (4) is arranged between the upper cavity (2) and the lower cavity (3), a plurality of frames (5) are arranged at the bottom of the partition plate (4), cloth bags (6) with bag openings communicated with the upper cavity (2) are arranged on the frames (5), a discharging hopper (7) is arranged at the bottom of the lower cavity (3), and a valve (8) is arranged at the bottom of the discharging hopper (7). A smoke inlet pipe (9) is arranged on the side wall of the lower cavity (3), a smoke exhaust pipe (10) is arranged on the side wall of the upper cavity (2), a sleeve (11) is arranged at the upper end of the frame (5), a rotating shaft (12) is arranged in the sleeve (11), fan blades (13) are arranged on the peripheral face of the rotating shaft (12), a support (14) is arranged at the lower end of the rotating shaft (12), and wool tops (15) are arranged on the inner side of the support (14). The device has the advantages of being good in energy-saving performance and low in failure rate.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of waste incineration tail gas treatment equipment, especially relates to a waste incineration tail gas treatment energy-saving device. BACKGROUND

[0002] In the waste incineration power plant, the incineration tail gas generated by the incinerator needs to be treated by multiple processes before being discharged, and the treatment device used in one of the processes is a bag filter for intercepting fly ash in the tail gas.

[0003] The structure of the existing bag filter comprises a box body, an upper cavity and a lower cavity are arranged in the box body, a partition plate is arranged between the upper cavity and the lower cavity and fixed to the box body, a plurality of frames are arranged at the bottom of the partition plate, a bag is sleeved on the frame, the bag opening is communicated with the upper cavity, a discharge hopper is arranged at the bottom of the lower cavity, a valve is arranged at the bottom of the discharge hopper, a smoke inlet pipe is arranged on the side wall of the lower cavity, and a smoke outlet pipe is arranged on the side wall of the upper cavity.

[0004] In actual use, the fly ash is accumulated on the bag, which reduces the passing efficiency of the tail gas, so a bag ash removal mechanism is arranged in the bag filter, which has various types such as a sound wave ash removal mechanism, a pulse jet ash removal mechanism and a mechanical vibration ash removal mechanism, but all of them need to be driven by an additional power source, which is not conducive to energy saving. UTILITY MODEL CONTENTS

[0005] The utility model aims to provide a waste incineration tail gas treatment energy-saving device.

[0006] The utility model has the advantages of good energy saving and low failure rate.

[0007] The technical scheme of the utility model is as follows: a waste incineration tail gas treatment energy-saving device comprises a box body, an upper cavity and a lower cavity are arranged in the box body, a partition plate is arranged between the upper cavity and the lower cavity, a plurality of frames are arranged at the bottom of the partition plate, a bag is arranged on the frame and communicated with the upper cavity through a bag opening, a discharge hopper is arranged at the bottom of the lower cavity, a valve is arranged at the bottom of the discharge hopper, a smoke inlet pipe is arranged on the side wall of the lower cavity, a smoke outlet pipe is arranged on the side wall of the upper cavity, a sleeve pipe is arranged at the upper end of the frame and communicated with the upper cavity, a rotating shaft is arranged in the sleeve pipe, a fan blade is arranged on the outer periphery of the rotating shaft, the lower end of the rotating shaft penetrates through the bottom of the frame and is provided with a U-shaped support, and a wool strip is arranged on the inner side of the support.

[0008] In the foregoing waste incineration tail gas treatment energy-saving device, a support rod is arranged at the upper end of the rotating shaft and fixed to the sleeve pipe, and the rotating shaft is rotationally connected with the support rod.

[0009] In the aforementioned waste incineration flue gas treatment energy-saving device, bearings are provided between the rotating shaft and the frame, and between the rotating shaft and the support rod, and dustproof units are provided on the upper and lower sides of the bearings.

[0010] In the aforementioned waste incineration flue gas treatment energy-saving device, the dust prevention unit includes a baffle fixed to the rotating shaft, and an elastic hose is provided between the baffle frame or between the baffle and the support rod, with the bearing located inside the hose.

[0011] In the aforementioned waste incineration flue gas treatment energy-saving device, an arc-shaped paddle is provided on the outer circumferential surface of the hose, and in the rotation direction of the rotating shaft, the outer end of the paddle is located behind the inner end of the paddle.

[0012] Compared with existing technologies, this invention adds a sleeve to the top of the frame of a conventional baghouse dust collector to directionally constrain the airflow from the filter bags. A rotating shaft with fan blades is installed inside the sleeve. The fan blades are driven by the airflow. A bracket with brush strips is installed at the lower end of the shaft. As the shaft rotates, it drives the bracket to rotate, and the brush strips on the bracket can brush off the fly ash accumulated on the outside of the filter bags. Because this invention uses the exhaust gas airflow to clean the fly ash from the filter bags, no additional energy is required, resulting in good energy efficiency. Furthermore, the bearings on the rotating shaft create favorable conditions for smooth rotation, and the dustproof unit prevents dust from entering the bearings, further ensuring smooth rotation and reducing the failure rate. Therefore, this invention has the advantages of good energy efficiency and a low failure rate. Attached Figure Description

[0013] Figure 1 This is a front view structural diagram of this utility model.

[0014] Figure 2 This is a structural schematic diagram of the frame of this utility model.

[0015] Figure 3 This is a top view of the hose.

[0016] The labels in the attached diagram are as follows: 1-box body, 2-upper cavity, 3-lower cavity, 4-partition plate, 5-frame, 6-cloth bag, 7-discharge hopper, 8-valve, 9-inlet pipe, 10-exhaust pipe, 11-sleeve, 12-shaft, 13-fan blade, 14-support, 15-hair strip, 16-support rod, 17-bearing, 18-baffle, 19-hose, 20-paddle. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments, but this should not be construed as limiting the present invention.

[0018] Example: An energy-saving device for treating waste incineration flue gas, such as Figure 1As shown, the device includes a housing 1, with multiple support columns at the bottom of the housing 1. The housing 1 has an upper cavity 2 and a lower cavity 3 inside. A partition 4 fixed to the housing 1 is provided between the upper cavity 2 and the lower cavity 3. Multiple frames 5 are provided at the bottom of the partition 4. The frames 5 are cylindrical structures. Multiple air inlets are formed on the outer circumference and bottom of the frames 5. The frames 5 can be made of stainless steel perforated plate.

[0019] A cloth bag 6, with its opening connected to the upper cavity 2, is mounted on the frame 5. The cloth bag 6 is fitted onto the frame 5 from bottom to top and secured using various methods, such as wire binding or clamping. The frame 5 is used to maintain the shape of the cloth bag 6. A discharge hopper 7 is located at the bottom of the lower cavity 3, and a valve 8 is located at the bottom of the discharge hopper 7. A smoke inlet pipe 9 is located on the side wall of the lower cavity 3, and a smoke exhaust pipe 10 is located on the side wall of the upper cavity 2.

[0020] The upper end of the frame 5 is provided with a sleeve 11 that enters the upper cavity 2. The sleeve 11 is provided with a rotating shaft 12. Multiple fan blades 13 are evenly distributed in the circumference on the outer circumferential surface of the rotating shaft 12. The lower end of the rotating shaft 12 passes through the bottom of the frame 5 and is provided with a U-shaped bracket 14. The bracket 14 is located on the outside of the frame 5 and forms a uniform gap. The inner side of the bracket 14 is provided with a brush strip 15, and the end of the brush strip 15 contacts the cloth bag 6.

[0021] The upper end of the rotating shaft 12 is provided with a support rod 16 fixed to the sleeve 11. Bearings 17 are provided between the rotating shaft 12 and the frame 5, and between the rotating shaft 12 and the support rod 16. Dustproof units are provided on the upper and lower sides of the bearings 17.

[0022] The dustproof unit includes a baffle 18 fixed to the rotating shaft 12. A rubber hose 19 is provided between the baffle 18 frame 5 or between the baffle 18 and the support rod 16. The hose 19 is fixed to the baffle 18. An arc-shaped paddle 20 is provided on the outer circumferential surface of the hose 19. In the rotation direction of the rotating shaft 12, the outer end of the paddle 20 is located behind the inner end of the paddle 20, and the inner end of the paddle 20 is tangent to the outer circumferential surface of the hose 19. The bearing 17 is located inside the hose 19.

[0023] Working principle: The exhaust gas enters the lower chamber 3 from the inlet pipe 9, is filtered by the filter bag 6, enters the upper chamber 2, and is discharged from the exhaust pipe 10. The fly ash in the exhaust gas is intercepted on the outer surface of the filter bag 6.

[0024] The exhaust gas is concentrated upwards inside the casing, impacting the fan blade 13 and driving the rotating shaft 12 to rotate. The rotating shaft 12 drives the support 14 to rotate through the frame 5. The brush strips on the support 14 brush off the fly ash on the outer periphery and bottom surface of the filter bag 6. The fallen fly ash is collected in the discharge hopper 7. After accumulating to a certain extent, the valve 8 can be opened to discharge it.

[0025] The hose 19 prevents fly ash from entering the bearing 17, ensuring smooth rotation of the shaft 12. As the shaft 12 rotates, the lever 20 rotates accordingly, pushing fly ash near the hose 19 to the far end, further preventing fly ash from entering the bearing 17.

[0026] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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 utility model.

Claims

1. An energy-saving device for treating waste incineration flue gas, comprising a housing (1), wherein the housing (1) has an upper chamber (2) and a lower chamber (3), a partition (4) is provided between the upper chamber (2) and the lower chamber (3), a plurality of frames (5) are provided at the bottom of the partition (4), a cloth bag (6) with its opening connected to the upper chamber (2) is provided on the frame (5), a discharge hopper (7) is provided at the bottom of the lower chamber (3), a valve (8) is provided at the bottom of the discharge hopper (7), a smoke inlet pipe (9) is provided on the side wall of the lower chamber (3), and a smoke exhaust pipe (10) is provided on the side wall of the upper chamber (2), characterized in that: The upper end of the frame (5) is provided with a sleeve (11) that enters the upper cavity (2). The sleeve (11) is provided with a rotating shaft (12). The outer circumferential surface of the rotating shaft (12) is provided with a fan blade (13). The lower end of the rotating shaft (12) passes through the bottom of the frame (5) and is provided with a U-shaped bracket (14). The inner side of the bracket (14) is provided with a brush strip (15).

2. The energy-saving device for treating waste incineration flue gas according to claim 1, characterized in that: The upper end of the rotating shaft (12) is provided with a support rod (16) fixed to the sleeve (11), and the rotating shaft (12) and the support rod (16) are rotatably connected.

3. The energy-saving device for treating waste incineration flue gas according to claim 2, characterized in that: Bearings (17) are provided between the rotating shaft (12) and the frame (5) and between the rotating shaft (12) and the support rod (16). Dustproof units are provided on the upper and lower sides of the bearings (17).

4. The energy-saving device for treating waste incineration flue gas according to claim 3, characterized in that: The dustproof unit includes a baffle (18) fixed to the rotating shaft (12), and an elastic hose (19) is provided between the baffle (18) and the frame (5) or between the baffle (18) and the support rod (16), and a bearing (17) is located inside the hose (19).

5. The energy-saving device for treating waste incineration flue gas according to claim 4, characterized in that: The outer circumferential surface of the hose (19) is provided with an arc-shaped paddle (20). In the rotation direction of the rotating shaft (12), the outer end of the paddle (20) is located behind the inner end of the paddle (20).

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