Dust remover for tail gas generated after sludge drying
Through the automated control system, wet ash and dry ash are distinguished, and automatic ash discharge of exhaust gas dust collectors after sludge is realized, which solves the problems of cumbersome manual operation and equipment blockage in the existing technology, improves system operation efficiency and reduces costs.
Patent Information
- Application Number
- CN202422472961.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-12
- Publication Date
- 2025-08-22
- Estimated Expiration
- 2034-10-12
AI Technical Summary
The ash discharge method of the existing sludge after drying the exhaust dust collector relies on manual operation, resulting in large water consumption, increased wastewater treatment, high equipment failure rate and low operating efficiency, and the inability to effectively distinguish between wet ash and dry ash, resulting in blockage of the conveying equipment.
The automatic control system is adopted to determine the humidity and position of the ash through the powder humidity meter and the material level switch. Combined with the automatic ash discharge method of electric valves and solenoid valves, wet ash discharge and dry ash are distinguished, and flushing water ash discharge or screw conveyor are used to realize automatic ash discharge.
It reduces the workload of workers, reduces water consumption and wastewater treatment, reduces equipment failure rate, improves the operating efficiency of the sludge drying system and reduces operating costs.
Smart Images
Figure CN223248961U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of sludge drying tail gas dust removal, in particular to a sludge drying tail gas dust collector. Background Art
[0002] In the sludge drying process, dust removal from the dust collector is a key step. Traditional sludge drying tail gas dust collectors mainly use manual operation to remove dust, which has many problems and shortcomings.
[0003] Specifically, existing dust collector ash removal is a cumbersome manual operation, requiring inspectors to regularly tap the dust collector's buffer hopper and listen to the sound to determine the ash accumulation height. If the accumulation is excessive, valves and equipment must be manually operated to discharge the ash. This method is not only labor-intensive but also relies on the inspector's experience, making it prone to misjudgment. By flushing the ash into a wastewater tank with flushing water, the main disadvantage is that it consumes a large amount of flushing water, generating a large amount of wastewater, increasing water consumption and wastewater treatment volume, thereby increasing operating costs. The ash is then conveyed to the dry sludge conveying equipment via a screw conveyor. The main disadvantage of this method is that when the ash collected by the dust collector is wet, it has a high moisture content. Transporting the wet ash to the dry sludge conveying equipment increases the moisture content of the dry sludge within the dry sludge conveying equipment, which can easily cause sludge buildup in the equipment, leading to conveyor blockages and shutdown of the sludge drying system. This not only increases equipment failure rates but also reduces the overall operating efficiency of the sludge drying system. Excessively high sludge moisture content also affects subsequent disposal.
[0004] Therefore, there is an urgent need for a sludge drying tail gas dust collector with a high degree of automation, reduced water consumption and wastewater treatment volume, and reduced equipment failure rate. Utility Model Content
[0005] The purpose of this utility model is to provide a sludge drying tail gas dust collector to address the deficiencies in the existing technology;
[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:
[0007] The utility model provides a tail gas dust collector after sludge drying, comprising: a dust collector, a buffer bucket, a screw conveyor, and a waste water tank;
[0008] The dust collector has a first outlet at the bottom, the buffer bucket is fixedly arranged at the bottom of the dust collector, and the buffer bucket has a first inlet at the top, and the first outlet is connected to the first inlet pipeline.
[0009] The bottom of the buffer bucket is provided with a second outlet and a third outlet, the second outlet is connected to the inlet pipe of the screw conveyor, and the third outlet is connected to the waste water tank pipeline;
[0010] Wherein, a second inlet is fixedly provided on the top of the buffer bucket, and the second inlet pipe is connected to a flushing water source;
[0011] Wherein, a powder humidity meter is fixedly provided on the side wall of the buffer bucket.
[0012] Furthermore, a first electric valve is fixedly provided on the connecting pipeline between the first outlet and the first inlet.
[0013] Furthermore, a second electric valve is fixedly provided on the pipeline connecting the second outlet and the screw conveyor.
[0014] Furthermore, a third electric valve is fixedly provided on the pipeline connecting the third outlet and the waste water tank.
[0015] Furthermore, a solenoid valve is fixedly provided on the pipe connecting the second inlet and the flushing water source.
[0016] Furthermore, the dust collector is a cyclone dust collector.
[0017] Furthermore, a first material level switch is fixedly provided on the top side wall of the buffer bucket, and a second material level switch is fixedly provided on the bottom side wall of the buffer bucket.
[0018] The present invention adopts the above technical solution, and compared with the prior art, has the following technical effects:
[0019] The utility model solves the problem that the existing tail gas dust collector cannot determine whether the ash in the buffer hopper is wet or dry after sludge drying. It can automatically adopt different ash discharge methods according to whether the ash is wet or dry, solving the problems of high operating costs of simply flushing the ash to the wastewater tank with flushing water, and easily increasing the moisture content of the original dry sludge by using a single screw conveyor to the original dry sludge conveying equipment, causing the conveying equipment to clog and stop, and reducing the operating efficiency of the sludge drying. The utility model reduces the workload of workers, improves the operating efficiency of the sludge drying system, and reduces operating costs. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 This is a schematic cross-sectional view of the utility model;
[0021] The accompanying drawings of the present invention are as follows:
[0022] Dust collector, 1; first material level switch, 3; first electric valve, 2; buffer hopper, 4; powder moisture meter, 5; second material level switch, 6; second electric valve, 7; solenoid valve, 8; third electric valve, 9; screw conveyor, 10. DETAILED DESCRIPTION
[0023] The specific implementation of the present utility model will be described in detail below.
[0024] Unless otherwise defined, the technical or scientific terms used in the claims and the specification shall have the common meanings understood by persons having ordinary skills in the technical field to which the present invention belongs.
[0025] The words "include" or similar used in the description and claims of this utility model patent application mean that the items before "include" include the items listed after "include" or their equivalents, and do not exclude other items.
[0026] The numerical values mentioned in the present invention include all numerical values that increase by one unit from the lowest to the highest, assuming that there are at least two units between any lower value and the higher value. For example, if a component or a physical quantity is said to be from 1 to 100, preferably from 10 to 90, and most preferably from 20 to 80, it is intended to express that values such as 5 to 95, 14 to 76, 23 to 67, 32 to 58, and 41 to 49 are clearly listed in this specification; for values less than 1, 0.0001, 0.001, 0.01, or 0.1 are considered to be more appropriate units. The above examples are for illustrative purposes only. In fact, all numerical combinations between the lowest value and the highest value listed are considered to be clearly listed in this specification in a similar manner.
[0027] Example
[0028] This embodiment provides a sludge drying tail gas dust collector, comprising: a dust collector 1, a buffer hopper 4, a screw conveyor 10, and a wastewater tank;
[0029] The bottom of the dust collector 1 is provided with a first outlet, the buffer bucket 4 is fixedly arranged at the bottom of the dust collector 1, the top of the buffer bucket 4 is provided with a first inlet, and the first outlet is connected to the first inlet pipeline;
[0030] Wherein, the dust collector 1 is a cyclone dust collector.
[0031] Wherein, a first electric valve 2 is fixedly provided on the connecting pipeline between the first outlet and the first inlet.
[0032] The bottom of the buffer bucket 4 is provided with a second outlet and a third outlet. The second outlet is connected to the inlet pipe of the screw conveyor 10, and the third outlet is connected to the waste water tank pipeline.
[0033] A second electric valve 7 is fixedly provided on the pipeline connecting the second outlet and the screw conveyor 10 .
[0034] Wherein, a third electric valve 9 is fixedly provided on the pipeline connecting the third outlet and the waste water tank.
[0035] A second inlet is fixedly provided on the top of the buffer bucket 4, and the second inlet pipe is connected to a flushing water source; a solenoid valve 8 is fixedly provided on the pipe connecting the second inlet and the flushing water source.
[0036] Wherein, a powder moisture meter 5 is fixedly provided on the side wall of the buffer bucket 4 .
[0037] The top side wall of the buffer bucket 4 is fixedly provided with a first material level switch 3 , and the bottom side wall of the buffer bucket 4 is fixedly provided with a second material level switch 6 .
[0038] During use, when the first material level switch 3 of the buffer hopper 4 detects a high material level signal, the controller reads the humidity value of the powder humidity meter 5 and compares it with the set value. If it is greater than the set value, it is determined to be wet ash; if it is less than or equal to the set value, it is determined to be dry ash. If it is determined to be wet ash, it will automatically operate according to the wet ash discharge method. The first step is to close the first electric valve 2, the second step is to open the third electric valve 9, and the third step is to open the solenoid valve 8 to flush the buffer hopper 4. The fourth step is to wait for the powder level in the buffer hopper 4 to reach the second material level switch 6 to detect a low material level signal, then delay for 5 seconds to close the solenoid valve 8 and the third electric valve 9 in sequence, and open the first electric valve 2. If it is determined to be dry ash, it will automatically operate according to the dry ash discharge method. The first step is to close the first electric valve 2, the second step is to open the screw conveyor 10, the third step is to open the second electric valve 7, and the fourth step is to wait for the second material level switch 6 to detect a low material level signal, then delay for 5 seconds, close the second electric valve 7 in sequence and delay for 10 seconds, close the screw conveyor 10, and open the first electric valve 2.
[0039] In summary, the present invention solves the problem that existing tail gas dust collectors cannot determine whether the ash in the buffer hopper is wet or dry after sludge drying. It can automatically adopt different ash discharge methods according to whether the ash is wet or dry, solving the problems of high operating costs of simply flushing the ash to the wastewater tank with flushing water, and the problem of simply using a screw conveyor to deliver the sludge to the original dry sludge conveying equipment, which can easily increase the moisture content of the original dry sludge, cause the conveying equipment to clog and stop, and reduce the sludge drying operation efficiency. The present invention reduces the workload of workers, improves the operating efficiency of the sludge drying system, and reduces operating costs.
[0040] The above description is only a preferred embodiment of the present invention and does not limit the implementation method and protection scope of the present invention. For those skilled in the art, it should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.
Claims
1. A sludge drying tail gas dust collector, characterized in that: include: A dust collector (1), a buffer bucket (4), a screw conveyor (10), and a waste water tank; The dust collector (1) is provided with a first outlet at the bottom, the buffer bucket (4) is fixedly arranged at the bottom of the dust collector (1), the buffer bucket (4) is provided with a first inlet at the top, and the first outlet is connected to the first inlet pipeline; The bottom of the buffer bucket (4) is provided with a second outlet and a third outlet, the second outlet is connected to the inlet pipe of the screw conveyor (10), and the third outlet is connected to the waste water tank pipeline; Wherein, a second inlet is fixedly provided on the top of the buffer bucket (4), and the second inlet pipe is connected to a flushing water source; Wherein, a powder humidity meter (5) is fixedly provided on the side wall of the buffer bucket (4).
2. The tail gas dust collector after sludge drying according to claim 1, characterized in that: A first electric valve (2) is fixedly arranged on the connecting pipeline between the first outlet and the first inlet.
3. The tail gas dust collector after sludge drying according to claim 1, characterized in that: A second electric valve (7) is fixedly provided on the pipeline connecting the second outlet and the screw conveyor (10).
4. The tail gas dust collector after sludge drying according to claim 1, characterized in that: A third electric valve (9) is fixedly provided on a pipeline connecting the third outlet and the waste water tank.
5. The tail gas dust collector after sludge drying according to claim 1, characterized in that: A solenoid valve (8) is fixedly provided on a pipe connecting the second inlet and the flushing water source.
6. The tail gas dust collector after sludge drying according to claim 1, characterized in that: The dust collector (1) is a cyclone dust collector.
7. The tail gas dust collector after sludge drying according to claim 1, characterized in that: A first material level switch (3) is fixedly provided on the top side wall of the buffer bucket (4), and a second material level switch (6) is fixedly provided on the bottom side wall of the buffer bucket (4).