Wet sludge feeding device

Abstract

The utility model discloses a feeding device for wet sludge, which comprises a sludge bin for loading wet sludge; the screw feeder comprises a pipeline which is connected with the sludge bin so as to introduce wet sludge; the conveying auger is arranged in the pipeline and is driven by a screw pump to rotate so as to convey wet sludge; the pipeline is provided with a sludge observing opening and a water adding valve, the sludge observing opening can be opened or closed and is used for observing the sludge state, and the water adding valve is used for being connected with water supply equipment so as to add water to the sludge. The sludge treatment device can prevent sludge from hardening.

Description

Technical Field

[0001] The utility model relates to the field of sludge treatment, and more specifically, to a feeding device for wet sludge. Background Art

[0002] According to relevant statistics, my country's annual sludge production exceeds 70 million tons (at an 80% moisture content) and continues to grow at a steady rate. Sludge's high organic matter content allows for resource utilization, but its high moisture content limits industrial development. Furthermore, sludge contains large quantities of toxic and hazardous substances such as heavy metals and pathogens. If not effectively treated, it poses serious risks to the environment and human health. Drying and dehydration are key to effective sludge disposal.

[0003] The moisture content of factory sludge is around 80%. At this moisture content, the sludge has a certain viscosity, which allows it to be transported over short distances using a screw pump. However, sludge is a very viscous material. If improperly set up, the sludge will compact within the conveying system, causing system failure. This makes its transportation a major challenge, and how to evenly spread it on the filter press is also a pressing issue.

[0004] Patent 202311102369.9 discloses an integrated feeding system for sludge treatment, which mainly includes a silo, a screw pump unit, a mud separation unit, a conveying pipeline and a mud leakage prevention unit. The sludge in the silo is transported to a designated location through the screw pump unit, the mud separation unit and the conveying pipeline to achieve automatic and uniform sludge feeding. However, it has the following problems: 1. Water-containing sludge is a very viscous substance. It may become hardened in the silo, resulting in it being unable to fall into the screw pump for transportation. The entire system in the latter section is in a state of collapse. 2. There are too many pipes for dividing the material, resulting in uneven sludge discharge at the end of the pipe. 3. There are many moving parts in the entire pipeline, and during the feeding process, some pipes move differently, and there is a high failure rate in long-term use. 4. The sludge is mainly transported through split thin pipes, which leads to large resistance along the way, a huge increase in energy consumption, and poor economic efficiency. Utility Model Content

[0005] In order to solve the above problems, the utility model provides a feeding device for wet sludge to solve the problem that the sludge is easy to stick together during transportation.

[0006] The utility model adopts the following technical solutions:

[0007] A wet sludge feeding device, comprising:

[0008] Sludge silo, used to load wet sludge;

[0009] Screw feeder, including:

[0010] a pipeline connected to the sludge silo to allow wet sludge to enter;

[0011] A conveying auger is arranged in the pipeline and driven by a screw pump to convey the wet sludge;

[0012] The pipeline is provided with a mud observation port and a water adding valve. The mud observation port can be opened or closed for observing the state of the sludge. The water adding valve is used to connect to the water supply equipment to add water to the sludge.

[0013] Furthermore, a roller is provided in the sludge silo, and the roller is connected to a driving member to rotate so as to deliver the wet sludge in the sludge silo.

[0014] Furthermore, the pipeline is provided with a ball valve to control the flow of sludge.

[0015] Furthermore, a discharge port is provided at the end of the pipe, and the discharge port is rectangular with an aspect ratio greater than 10.

[0016] Furthermore, a grille is provided in the discharge port.

[0017] Furthermore, the mud viewing port is a cylindrical structure, which is arranged on the peripheral wall of the pipeline and is connected to the pipeline. A switchable cover is provided at the end of the mud viewing port; the water adding valve is arranged at the mud viewing port. Beneficial effects

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] The utility model arranges a mud observation port and a water adding valve on the pipeline. The shape of the sludge can be observed in real time through the mud observation port, and the water content of the sludge can be discovered in time. When the water content of the sludge is low, water is added midway through the water adding valve, so as to prevent the sludge from being unable to be transported due to low water content and high viscosity during the transportation process.

[0020] The utility model also prevents the sludge from being adhered to the feeding bin and causing the sludge to be unable to be discharged by utilizing the roller.

[0021] The utility model also makes the sludge evenly spread on the filter press through the design of the discharge port, so as to make the final moisture content uniform and meet the needs of further disposal of the sludge in the later stage. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of a wet sludge feeding device according to an embodiment of the present invention.

[0023] In the figure: 1. Screw feeder; 2. Roller; 3. Mud viewing port; 4. Water adding valve; 5. Ball valve; 6. Discharge port; 7. Grille. DETAILED DESCRIPTION

[0024] The present invention will be further described below in conjunction with specific embodiments and accompanying drawings.

[0025] See Figure 1 The present invention provides a wet sludge feeding device, comprising:

[0026] Sludge silo, used to load wet sludge;

[0027] Screw feeder 1, comprising:

[0028] a pipeline connected to the sludge silo to allow wet sludge to enter;

[0029] A conveying auger is arranged in the pipeline and driven by a screw pump to convey the wet sludge;

[0030] The pipeline is provided with a mud observation port 3 and a water adding valve 4. The mud observation port 3 can be opened or closed for observing the state of the sludge. The water adding valve 4 is used to connect to a water supply device to add water to the sludge.

[0031] An openable mud viewing port 3 is installed on the conveying pipeline, so that the moisture content and state of the sludge can be observed. If the moisture content of the sludge is too low, water is added to the sludge through the water supply equipment to prevent it from hardening in the pipeline.

[0032] Furthermore, a roller shaft 2 is provided in the sludge silo, and the roller shaft is connected to a driving member to rotate so as to deliver the wet sludge in the sludge silo.

[0033] The roller 2 stirs continuously to prevent the material from becoming compacted.

[0034] Furthermore, the pipeline is provided with a ball valve 5 to control the flow of sludge.

[0035] The length of the pipeline is greater than the length of the delivery auger so that the ball valve 5 can be arranged at a position of the pipeline not occupied by the delivery auger.

[0036] The ball valve 5 is used to control the flow of sludge to meet the needs of later filter pressing.

[0037] Furthermore, a discharge port 6 is provided at the end of the pipe, and the discharge port 6 is rectangular with an aspect ratio greater than 10.

[0038] Furthermore, a grille 7 is provided in the discharge port 6 .

[0039] The discharge port 6 has an aspect ratio greater than 10 and is a duckbill-shaped discharge port, i.e., a slender structure, which squeezes the sludge into a slender plane so that it can be evenly laid on the filter press surface. The grid 7 can further squeeze and subdivide the sludge to prevent it from accumulating.

[0040] Furthermore, the mud viewing port 3 is a cylindrical structure, which is arranged on the peripheral wall of the pipeline and is connected to the pipeline. A switchable cover is provided at the end of the mud viewing port 3; the water filling valve 4 is arranged at the mud viewing port 3.

[0041] The wet sludge feeding device of the present invention evenly spreads the sludge on the surface of the filter press, so that each portion of the sludge is evenly stressed and the moisture content of each portion of the sludge after filtration is basically the same, which is conducive to the further treatment of the sludge in the later stage. If a conventional feeding method is used, the sludge cannot be evenly spread on the filter press, resulting in uneven stress and a large difference in the moisture content of the sludge, which is not conducive to the later treatment of the sludge.

[0042] In a specific application, the wet sludge feeding device of the present invention is used as follows: for 50t / d of wet sludge with a moisture content of 80%, the wet sludge falls downward due to gravity in the sludge silo. Since the wet sludge has a certain viscosity, to prevent it from compacting in the silo, a roller 2 is installed in the silo to continuously stir it, thereby preventing compaction. After the sludge falls, it is transported forward by a screw pump. An openable mud observation port 3 is installed in the pipeline to observe the moisture content and state of the sludge. If the moisture content of the sludge is too low, water is added to the sludge through a water adding device to prevent compaction in the pipeline. At the same time, a ball valve 5 is installed in the pipeline to control the flow of the sludge to meet the needs of subsequent filter pressing. At the end of the pipeline, a duckbill-shaped discharge port 6 is installed. In addition, a grid 7 is installed at the end of the duckbill to further squeeze and subdivide the sludge to prevent accumulation.

[0043] The examples described in the present invention are merely descriptions of the preferred implementation methods of the present invention, and are not intended to limit the concept and scope of the present invention. Without departing from the design concept of the present invention, various modifications and improvements made to the technical solutions of the present invention by engineers and technicians in this field should fall within the scope of protection of the present invention.

Claims

1. A wet sludge feeding device, comprising: Sludge silo, used to load wet sludge; Screw feeder, including: a pipeline connected to the sludge silo to allow wet sludge to enter; A conveying auger is arranged in the pipeline and driven by a screw pump to convey the wet sludge; It is characterized in that the pipeline is provided with a mud observation port and a water adding valve. The mud observation port can be opened or closed for observing the sludge state, and the water adding valve is used to connect to the water supply equipment to add water to the sludge.

2. The wet sludge feeding device according to claim 1, characterized in that: A roller is provided in the sludge silo, and the roller is connected to a driving member to rotate so as to deliver the wet sludge in the sludge silo.

3. The wet sludge feeding device according to claim 1, characterized in that: The pipeline is provided with a ball valve to control the flow of sludge.

4. The wet sludge feeding device according to claim 1, characterized in that: A discharge port is provided at the end of the pipe, and the discharge port is rectangular with a length-to-width ratio greater than 10.

5. The wet sludge feeding device according to claim 4, characterized in that: A grille is provided in the discharge port.

6. The wet sludge feeding device according to claim 1, characterized in that: The mud viewing port is a cylindrical structure, which is arranged on the peripheral wall of the pipeline and is connected to the pipeline. A cover plate that can be opened and closed is provided at the end of the mud viewing port; the water filling valve is arranged at the mud viewing port.

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