A sludge treatment device

Abstract

This utility model relates to the field of sludge treatment technology, and more particularly to a sludge treatment device, including a cyclone dust collector. The cyclone dust collector is mounted on a platform via a vertical frame. A sealed screw conveyor is installed at the bottom of the cyclone dust collector. The discharge hopper of the sealed screw conveyor is connected to a carbonization furnace, and the inlet is connected to the discharge port of the cyclone dust collector. The carbonization furnace is horizontally mounted on the platform, forming an inclined angle of 1-3° with the horizontal plane. This utility model improves the dust collection efficiency of the cyclone dust collector by adding a sealed receiving hopper, avoiding the diffusion of fine particulate matter generated during sludge treatment, and reducing air pollution.

Description

Technical Field

[0001] This utility model relates to the field of sludge treatment technology, specifically to a sludge treatment device. Background Technology

[0002] Sludge drying and carbonization technology is a process that transfers heat to sludge to dry its internal moisture. This technology effectively reduces sludge volume, renders it harmless, and utilizes it as a resource. The dried and carbonized sludge can be used as building materials and landscaping soil, and it is currently being promoted and utilized to some extent in China. However, the sludge drying and carbonization process inevitably generates a large amount of drying and carbonization dust. Cyclone dust collectors are typically used to remove large particles of this dust. However, the large particles of dust screened by cyclone dust collectors are easily dispersed, generate high temperatures, and are difficult to collect effectively, easily causing dust pollution and posing a risk of burns. Furthermore, due to the large amount of dust generated, significant manpower and resources are required daily for dust handling, and the collected dust is difficult to treat effectively. Therefore, appropriate improvements to the existing process are necessary. Utility Model Content

[0003] The purpose of this invention is to provide a sludge treatment device to improve the dust collection efficiency of the cyclone dust removal process.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A sludge treatment device includes a cyclone dust collector, which is mounted on a platform via a vertical frame. A sealed screw conveyor is installed at the bottom of the cyclone dust collector. The discharge hopper of the sealed screw conveyor is connected to a carbonization furnace, and the inlet is connected to the discharge outlet of the cyclone dust collector. The carbonization furnace is installed horizontally on the platform and at an angle of 1-3° to the horizontal plane.

[0006] Preferably, the enclosed screw conveyor includes a screw conveyor, the conveying shaft of which is connected to a reducer, and the reducer is connected to a motor drive.

[0007] Preferably, the feed inlet of the carbonization furnace is located at the end that is higher than the horizontal plane.

[0008] Preferably, the inlet of the sealed screw conveyor and the outlet of the cyclone dust collector are connected by bolts, and a high-temperature resistant gasket is provided at the connection.

[0009] Preferably, the distance between the screw shaft of the screw conveyor and the housing is set to 1cm ± 0.2cm.

[0010] Preferably, the inner shell of the screw conveyor is lined with a polytetrafluoroethylene anti-stick coating with a thickness of 2-3 mm and a surface roughness Ra≤0.8 μm.

[0011] Preferably, the motor is a variable frequency speed control motor, used to adjust the working speed of the screw conveyor according to the change in sludge treatment volume.

[0012] Preferably, the sealed screw conveyor is also equipped with a humidity sensor to monitor the humidity of the sludge.

[0013] Preferably, the cyclone dust collector is equipped with a regulating valve at the air inlet to regulate the gas flow rate entering the cyclone dust collector in order to optimize the dust separation effect.

[0014] Preferably, the screw conveyor is made of stainless steel.

[0015] Compared with the prior art, the technical solution of this application has the following technical effects:

[0016] 1. This utility model improves the dust collection efficiency of cyclone dust collectors by adding a sealed receiving hopper, avoids the diffusion of fine particulate matter generated during sludge removal, and reduces air pollution.

[0017] 2. This utility model can also avoid the need for manual handling of the dust collection hopper, thus avoiding the risk of burns from high-temperature dust.

[0018] 3. This utility model transports the dust from the cyclone dust collector to the carbonization furnace for disposal, reducing dust generation and improving sludge carbonization efficiency. The sealed screw conveyor ensures dust-free and continuous transmission of sludge from the cyclone dust collector to the carbonization furnace, avoiding environmental pollution and material loss. Attached Figure Description

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Figure 1 This is a schematic diagram of the structure of this utility model.

[0021] In the diagram: 1. Cyclone dust collector; 2. Frame; 3. Platform; 4. Discharge hopper; 5. Carbonization furnace; 6. Feed inlet; 7. Discharge outlet. Detailed Implementation

[0022] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0023] As a preferred embodiment of this utility model, see attached... Figure 1 As shown: This embodiment provides a sludge treatment device, including a cyclone dust collector 1. The cyclone dust collector 1 is installed on a platform 3 via a frame 2. A sealed screw conveyor is provided at the bottom of the cyclone dust collector 1. The discharge hopper 4 of the sealed screw conveyor is connected to a carbonization furnace 5, and the feed inlet 6 is connected to the discharge outlet 7 of the cyclone dust collector 1. The carbonization furnace 5 is installed horizontally on the platform 3 and forms an inclined angle of 1-3° with the horizontal plane.

[0024] In the above embodiments, the angle of inclination between the carbonization furnace 5 and the horizontal plane is preferably 2.5°.

[0025] In some preferred embodiments, the enclosed screw conveyor includes a screw conveyor 8, the conveying shaft of which is connected to a reducer, and the reducer is connected to a motor 9 for transmission.

[0026] In some preferred embodiments, the feed inlet of the carbonization furnace is located at the end that is higher than the horizontal plane.

[0027] In the above embodiment, the carbonization furnace 5 is a horizontal carbonization furnace, which is installed horizontally on the platform 3 and at an angle of 1-3° with the horizontal plane. This allows gravity to assist in feeding. The feed inlet of the carbonization furnace is set at the end that is higher than the horizontal plane. The inclined angle allows the material to slide down into the carbonization furnace naturally with the help of gravity, reducing the additional power requirements and helping to distribute the material evenly.

[0028] In some preferred embodiments, the inlet 6 of the sealed screw conveyor and the outlet of the cyclone dust collector 1 are bolted together, and a high-temperature resistant gasket is provided at the connection. This embodiment enhances the sealing performance. The use of bolted connection and high-temperature resistant gasket ensures good sealing at the interface, preventing dust or harmful gas leakage and protecting the environment and the health of operators.

[0029] In some preferred embodiments, the distance between the screw shaft of the screw conveyor 8 and the housing is set to 1cm ± 0.2cm.

[0030] The above embodiments can optimize material flow. By precisely controlling the distance between the screw shaft and the housing (1cm±0.2cm), material blockage can be effectively avoided, while ensuring the fluidity of the material during the conveying process and improving work efficiency.

[0031] In some preferred embodiments, the interior of the casing of the screw conveyor 8 is lined with a polytetrafluoroethylene anti-stick coating with a thickness of 2-3 mm and a surface roughness Ra≤0.8 μm.

[0032] In the above embodiments, the polytetrafluoroethylene anti-stick coating lining the housing not only reduces the possibility of material adhesion, but also makes it easy to clean and maintain, extends the service life of the equipment, and reduces material residue.

[0033] In some preferred embodiments, the motor 9 is a variable frequency speed control motor, used to adjust the working speed of the screw conveyor according to changes in the amount of sludge processed.

[0034] The above embodiments allow for flexible adjustment of motor speed. For example, based on changes in the actual sludge treatment volume, the variable frequency speed control motor can adjust the working speed of the screw conveyor in real time to achieve optimal operating efficiency and energy consumption management.

[0035] In some preferred embodiments, the sealed screw conveyor is further equipped with a humidity sensor to monitor the humidity of the sludge. In this embodiment, the humidity sensor is used to monitor the humidity of the sludge, providing data support for subsequent processing steps and ensuring that the processing is always under optimal conditions.

[0036] In some preferred embodiments, a regulating valve 10 is provided at the air inlet of the cyclone dust collector 1 to regulate the gas flow rate entering the cyclone dust collector in order to optimize the dust separation effect.

[0037] This embodiment can control the gas flow rate entering the cyclone dust collector by adjusting the valve, which can better adapt to the dust separation requirements under different working conditions and improve dust removal efficiency.

[0038] In some preferred embodiments, the screw conveyor 8 is made of stainless steel.

[0039] In the above embodiments, stainless steel has good corrosion resistance and is particularly suitable for treating sludge with complex chemical composition, extending the service life of equipment and reducing maintenance costs. In this embodiment, the screw conveyor 8 is made of stainless steel, which can enhance its corrosion resistance and extend the service life of the screw conveyor 8.

[0040] When using,

[0041] This patent relates to a high-efficiency and energy-saving sludge treatment device, whose operation achieves the harmless and resource-based treatment of sludge through multi-stage collaborative operation. The following is a detailed description of the device's workflow:

[0042] Phase 1: Gas-solid separation pretreatment

[0043] 1. Feed adjustment

[0044] Sludge with a moisture content of 30%-50% enters the cyclone dust collector 1 through a closed conveyor belt. At this time, the regulating valve 10 located at the air inlet of the dust collector automatically adjusts its opening according to the preset pressure value to stabilize the air intake speed within the range of 18-25m / s, ensuring the best centrifugal separation effect.

[0045] 2. Cyclone dust removal operation

[0046] The dust-laden airflow forms a high-speed vortex inside the dust collector. Solid particles with a diameter >50μm collide with the cylinder wall under the action of centrifugal force and slide down to the bottom discharge port 7.

[0047] Phase Two: Sealed Delivery and Humidity Control

[0048] 3. Anti-stick conveyor

[0049] The deposited sludge particles enter the sealed screw conveyor through the flange interface of outlet 7. At this time: the PTFE anti-stick coating effectively reduces the friction coefficient between the material and the shell; the precise gap between the screw shaft and the shell creates a self-cleaning effect, preventing material accumulation and blockage;

[0050] Third stage: Gradient carbonization treatment

[0051] 4. Inclined feeding

[0052] The sludge processed by the screw conveyor enters the carbonization furnace from the high-level feed inlet. The furnace body is arranged laterally at a 2.5° inclination angle, so that the material moves towards the discharge end at a speed of 0.3-0.5 m / min under the action of gravity.

[0053] 5. Segmented pyrolysis

[0054] Preheating section: The burner raises the furnace temperature gradient to 300-350℃, and the volatile organic compounds in the sludge begin to decompose.

[0055] Main reaction section: The temperature is stabilized at 550-600℃. Through the variable pitch design of the spiral stirring blades, the carbonization time is extended to 40-50 minutes.

[0056] Cooling section: The built-in water-cooling jacket reduces the product temperature to below 80°C, ultimately producing biochar.

[0057] It should be noted that carbonization furnaces are mature processing equipment, and the structure of carbonization furnaces is not the key improvement of this utility model. Therefore, this utility model will not describe the structure of carbonization furnaces in detail. The structure can adopt the furnace body disclosed in publication number CN108622875A.

[0058] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A sludge treatment device, comprising a cyclone dust collector, the cyclone dust collector being mounted on a platform via a vertical frame, characterized in that: The bottom of the cyclone dust collector is equipped with a sealed screw conveyor device. The discharge hopper of the sealed screw conveyor device is connected to the carbonization furnace, and the inlet is connected to the discharge port of the cyclone dust collector. The carbonization furnace is installed horizontally on the platform and is inclined at an angle of 1-3° with the horizontal plane.

2. The sludge treatment device according to claim 1, characterized in that: The enclosed screw conveyor includes a screw conveyor, the conveying shaft of which is connected to a reducer, and the reducer is connected to a motor drive.

3. The sludge treatment device according to claim 1, characterized in that: The feed inlet of the carbonization furnace is located at the end that is higher than the horizontal plane.

4. The sludge treatment device according to claim 1, characterized in that: The inlet of the sealed screw conveyor and the outlet of the cyclone dust collector are connected by bolts, and a high-temperature resistant gasket is installed at the connection.

5. A sludge treatment device according to claim 2, characterized in that: The distance between the screw shaft and the housing of the screw conveyor is set to 1cm ± 0.2cm.

6. A sludge treatment device according to claim 2, characterized in that: The screw conveyor has a polytetrafluoroethylene (PTFE) anti-stick coating inside its casing. The coating thickness is 2-3 mm and the surface roughness Ra ≤ 0.8 μm.

7. A sludge treatment device according to claim 2, characterized in that: The motor is a variable frequency speed control motor, used to adjust the working speed of the screw conveyor according to changes in the amount of sludge processed.

8. The sludge treatment device according to claim 1, characterized in that: The sealed screw conveyor is also equipped with a humidity sensor to monitor the humidity of the sludge.

9. A sludge treatment device according to claim 1, characterized in that: The cyclone dust collector is equipped with a regulating valve at the air inlet to adjust the gas flow rate entering the cyclone dust collector in order to optimize the dust separation effect.

10. A sludge treatment device according to claim 2, characterized in that: The screw conveyor is made of stainless steel.

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