Quantitative feeding device for liquid sludge conditioner

Abstract

The utility model discloses a quantitative liquid sludge conditioner adding device, and belongs to the technical field of sludge treatment. The quantitative liquid sludge conditioner adding device comprises a treatment pond, a liquid storage tank, a metering pump, a moving mechanism, a spray head, a sensor module and a controller, the moving mechanism comprises a guide rail, a lead screw, a driving motor and a moving platform; the guide rails are fixed on two sides above the treatment tank, the lead screw is parallel to the guide rails and is connected with the output end of the driving motor through a coupler, and the moving platform is meshed with the lead screw through a nut and is in sliding connection with the guide rails through a sliding block; the spray head is mounted below the movable platform through a rotary bracket; the sensor module comprises a flow sensor and a concentration sensor; the controller receives signals of the sensor module and outputs control instructions to the metering pump, the driving motor, the stepping motor and the first valve. Through the moving mechanism, the spray head is matched with the rotating bracket with the adjustable pitch angle, so that the feeding position can be accurately positioned according to the sludge distribution condition, and the mixing uniformity of the conditioner and the sludge is improved.

Description

Technical Field

[0001] This utility model belongs to the field of sludge treatment technology, specifically relating to a quantitative dosing device for liquid sludge conditioner. Background Technology

[0002] In sludge treatment, liquid sludge conditioners are often added to improve sludge dewatering performance and efficiency. However, existing dosing devices have several problems and shortcomings. For example, the dosage is difficult to control precisely, leading to waste or insufficient addition of conditioner and affecting sludge dewatering. The fixed dosing location cannot be flexibly adjusted according to the distribution of sludge in the treatment tank, resulting in uneven mixing of the conditioner. Furthermore, some devices do not adequately consider the storage conditions of the conditioner, lacking proper stirring, level monitoring, and heating / insulation functions, which can easily lead to precipitation, deterioration, or unstable performance of the conditioner, thus affecting the stability and economy of the entire sludge treatment process. Therefore, there is an urgent need for a quantitative dosing device for liquid sludge conditioners that can solve the above problems. Summary of the Invention

[0003] To address the aforementioned problems, this utility model discloses a liquid sludge conditioner quantitative dosing device. The device features a moving mechanism that allows the nozzle to move flexibly above the treatment tank. Combined with an adjustable pitch angle rotating bracket, the device can accurately locate the dosing position based on the sludge distribution, thereby improving the uniformity of the mixing between the conditioner and the sludge.

[0004] To achieve the above objectives, the specific technical solution of this application is as follows:

[0005] A liquid sludge conditioner quantitative dosing device includes a treatment tank, a storage tank, a metering pump, a moving mechanism, a nozzle, a sensor module, and a controller. The storage tank is connected to the inlet of the metering pump via a pipe, and a first valve is installed on the pipe. The outlet of the metering pump is connected to the nozzle via a hose. The moving mechanism includes a guide rail, a lead screw, a drive motor, and a moving platform. The guide rail is fixed on both sides above the treatment tank. The lead screw is parallel to the guide rail and connected to the output end of the drive motor via a coupling. The moving platform is engaged with the lead screw by a nut and slidably connected to the guide rail via a slider. The nozzle is mounted below the moving platform via a rotating bracket, which is driven by a stepper motor to achieve 0-90° pitch angle adjustment. The sensor module includes a flow sensor and a concentration sensor. The flow sensor is installed in the middle of the hose, and the concentration sensor is embedded in the inner wall of the storage tank. The controller receives signals from the sensor module and outputs control commands to the metering pump, the drive motor, the stepper motor, and the first valve.

[0006] Furthermore, the mobile platform and the lead screw are orthogonally arranged. Preferably, the surface of the lead screw is coated with an anti-corrosion coating to effectively prevent rusting in the humid sludge treatment environment, extend the service life of the lead screw, and ensure the long-term stable operation of the mobile mechanism.

[0007] Preferably, the storage tank is equipped with a spiral stirrer with at least three stirring blades arranged in a spiral shape, which can generate a good vortex effect during the stirring process, so that the conditioner is fully mixed, preventing sedimentation due to long-term standing, and ensuring the uniformity and stability of the liquid sludge conditioner.

[0008] Preferably, the upper middle part of the storage tank is also equipped with a liquid level sensor to detect the liquid level in the tank. This sensor can monitor the liquid level in real time and feed the signal back to the controller. When the liquid level is lower than the set minimum level, the controller can issue an alarm to remind staff to replenish the conditioner. When the liquid level reaches the maximum level, it can automatically stop the delivery of the conditioner to prevent overflow.

[0009] An electric heating device is attached to the lower part of the outer wall of the storage tank to heat and maintain the temperature of the liquid sludge conditioner inside. The electric heating device can heat and maintain the liquid sludge conditioner in the storage tank according to the set temperature, ensuring that the conditioner is stored within a suitable temperature range and avoiding problems such as increased viscosity, decreased fluidity, or failure of the conditioner due to excessively low temperature.

[0010] Preferably, the nozzle is a fan-shaped atomizing nozzle, and the surface of the nozzle is provided with a polytetrafluoroethylene anti-stick coating to optimize the atomization effect of the agent and prevent clogging.

[0011] Compared with the prior art, the beneficial effects of this application are as follows:

[0012] This application enables the nozzle to move flexibly above the treatment tank by setting a moving mechanism. With the help of a rotating bracket with an adjustable pitch angle, the dosing position can be accurately located according to the sludge distribution, thereby improving the mixing uniformity of the conditioner and sludge.

[0013] The stirrer in the storage tank prevents the conditioner from settling, the level sensor facilitates real-time monitoring of the level, and the electric heating device ensures that the conditioner is stored at a suitable temperature to maintain its stable performance.

[0014] The fan-shaped atomizing nozzles of the spray head enable uniform coverage of the sludge, and the anti-stick coating on the surface extends the service life of the nozzles. The entire device is highly automated, effectively improving sludge treatment efficiency and quality while reducing operating costs.

[0015] The metering pump precisely controls the dosage of the conditioner, and combined with the real-time monitoring by the flow sensor, it ensures the accuracy and stability of the dosage. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a liquid sludge conditioner quantitative dosing device according to the present invention;

[0017] Figure 2 This is a top view of the treatment tank of a liquid sludge conditioner quantitative dosing device according to this utility model;

[0018] List of identifiers in attached diagrams:

[0019] 1. Treatment tank; 2. Storage tank; 201. Pipeline; 3. Metering pump; 301. Hoses; 4. Moving mechanism; 401. Guide rail; 402. Lead screw; 403. Drive motor; 404. Moving platform; 405. Slider; 5. Nozzle; 501. Rotating bracket; 502. Stepper motor; 6. Sensor module; 601. Flow sensor; 602. Concentration sensor; 603. Liquid level sensor; 7. Controller; 8. First valve. Detailed Implementation

[0020] The present invention will be further illustrated below with reference to the accompanying drawings and specific embodiments. It should be understood that the following specific embodiments are for illustrative purposes only and are not intended to limit the scope of the invention.

[0021] It should be noted that the terms "upper," "lower," "left," "right," "front," and "rear" used in the following description refer to the directions shown in the accompanying drawings, while the terms "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively. Furthermore, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] like Figure 1 and Figure 2 As shown, a liquid sludge conditioner quantitative dosing device includes a treatment tank 1, a storage tank 2, a metering pump 3, a moving mechanism 4, a nozzle 5, a sensor module 6, and a controller 7. The storage tank 2 stores the liquid sludge conditioner and is independent of the treatment tank 1. It is connected to the inlet of the metering pump 3 via a pipe 201. A first valve 8 is installed on the pipe 201 to control the flow of the conditioner from the storage tank to the metering pump. The outlet of the metering pump 3 is connected to the nozzle 5 via a flexible hose 301. The hose 301 has good flexibility and corrosion resistance, and can adapt to the movement requirements of the nozzle.

[0023] The moving mechanism 4 is a key component for adjusting the nozzle position, including a guide rail 401, a lead screw 402, a drive motor 403, and a moving platform 404. The guide rail 401 is securely fixed to both sides above the treatment tank 1. The lead screw 402 is arranged parallel to the guide rail 401 and connected to the output end of the drive motor 403 via a coupling. The bottom of the moving platform 404 is fitted with a nut that engages with the lead screw 402, while sliders 405 are installed on both sides of the platform, slidingly engaging with the guide rail 401. When the drive motor 403 operates, it drives the lead screw 402 to rotate, thereby causing the moving platform 404 to move linearly along the guide rail 401.

[0024] The nozzle 5 is installed below the mobile platform 404 and connected to the mobile platform via a rotating bracket 501. The rotating bracket 501 is driven by a stepper motor 502, which can adjust the pitch angle of the nozzle 5 within the range of 0-90° to adapt to the sludge dosing requirements at different locations.

[0025] Sensor module 6 is used to monitor key parameters during device operation. Among them, flow sensor 601 is installed in the middle of hose 301, which can monitor the flow rate of the conditioner as it passes through the hose in real time and transmit the flow signal to controller 7. Concentration sensor 602 is embedded in the inner wall of storage tank 2, which can detect the concentration of conditioner in the storage tank, providing data support for accurate dosing.

[0026] The controller 7 is the core of the entire device. It receives various signals from the sensor module 6, analyzes and processes them through its internal program, and then outputs corresponding control commands. The controller 7 is connected to the metering pump 3, drive motor 403, stepper motor 502, and first valve 8 via electrical circuits, enabling precise control of these actuators.

[0027] Furthermore, the moving platform 404 and the lead screw 402 are orthogonally arranged, making the horizontal movement of the moving platform more stable and precise. The surface of the lead screw 402 is coated with an anti-corrosion coating, which effectively prevents rusting in the humid sludge treatment environment, extends the service life of the lead screw, and ensures the long-term stable operation of the moving mechanism.

[0028] The storage tank 2 is equipped with a spiral stirrer 202. The stirrer has at least 3 stirring blades arranged in a spiral shape, which can generate a good vortex effect during the stirring process, so that the conditioner is fully mixed, preventing sedimentation due to long-term standing, and ensuring the uniformity and stability of the conditioner.

[0029] A liquid level sensor 603 is installed in the upper middle part of the storage tank 2 to monitor the liquid level in real time and feed the signal back to the controller 7. When the liquid level is lower than the set minimum level, the controller can issue an alarm to remind staff to replenish the conditioner in time; when the liquid level reaches the maximum level, it can automatically stop the delivery of the conditioner to prevent overflow. At the same time, an electric heating device 203 is attached around the lower part of the outer wall of the storage tank. This electric heating device can heat and keep the liquid sludge conditioner in the storage tank at a set temperature to ensure that the conditioner is stored within a suitable temperature range and avoids problems such as increased viscosity, decreased fluidity, or failure of the conditioner due to excessively low temperature.

[0030] Nozzle 5 employs a fan-shaped atomizing nozzle. This nozzle structure enables the conditioner to form a fan-shaped atomization effect when sprayed, increasing the contact area with the sludge, achieving uniform coverage of the sludge, and improving the conditioning effect. The surface of nozzle 5 is coated with a layer of polytetrafluoroethylene (PTFE) anti-stick coating. PTFE has excellent corrosion resistance and a low coefficient of friction, which can effectively prevent the conditioner from adhering and scaling on the nozzle surface, keeping the nozzle unobstructed and the spray performance stable, reducing the frequency and workload of maintenance.

[0031] Working principle:

[0032] During the sludge treatment process, when liquid sludge conditioner needs to be added to the sludge in treatment tank 1, the controller 7 first controls the opening of the first valve 8. The conditioner in the storage tank 2 flows into pipe 201 under gravity and enters the metering pump 3. The metering pump 3 extracts the conditioner at a precise flow rate according to the parameters set by the controller 7 and delivers it to the nozzle 5 through hose 301. During this process, the flow sensor 601 monitors the flow rate in hose 301 in real time and feeds the data back to the controller 7. Based on the feedback signal from the flow sensor 601, the controller 7 automatically adjusts the operating frequency of the metering pump 3 to ensure accurate and stable addition of the conditioner.

[0033] Meanwhile, the concentration sensor 602 continuously monitors the concentration of the conditioning agent in the storage tank 2. If the concentration deviates, the controller 7 can issue an alarm in time to remind the staff to check the condition of the conditioning agent in the storage tank and replenish or replace it if necessary to ensure the quality of the added conditioning agent.

[0034] Based on the distribution of sludge in treatment tank 1 and the treatment requirements, controller 7 controls drive motor 403 to rotate, causing lead screw 402 to rotate, thereby moving mobile platform 404 along guide rail 401 to a suitable position. Upon reaching the target position, controller 7 controls stepper motor 502 to drive rotating bracket 501 to adjust the pitch angle of nozzle 5, ensuring that nozzle 5 can add sludge at the optimal angle, guaranteeing thorough mixing of the conditioner and sludge for optimal conditioning results.

[0035] The spiral stirrer 202 inside the storage tank 2 rotates continuously under the drive of the motor, stirring the conditioner to prevent sedimentation and ensure its uniformity. The liquid level sensor 603 monitors the liquid level in the storage tank in real time and transmits the signal to the controller 7. When the liquid level is lower than the set lower limit, the controller 7 issues an alarm to prompt the replenishment of conditioner; when the liquid level reaches the set upper limit, the controller 7 automatically closes the relevant liquid inlet channel to prevent the conditioner from overflowing.

[0036] The electric heating device 203 heats and maintains the temperature of the conditioning agent in the storage tank 2 according to a preset temperature range. When the ambient temperature is low or the temperature of the conditioning agent is lower than the set value, the electric heating device automatically starts to heat the conditioning agent to a suitable temperature, ensuring its good fluidity, facilitating the extraction and delivery by the metering pump 3, and also helping to maintain the chemical stability of the conditioning agent and improve the conditioning effect.

[0037] In summary, the liquid sludge conditioner quantitative dosing device of this invention achieves precise dosing, flexible positioning, and uniform distribution of liquid sludge conditioner through the coordinated work of various components. It effectively solves the problems existing in the prior art, improves the efficiency and quality of sludge treatment, reduces operating costs, and has significant practical value.

[0038] It should be noted that the accompanying drawings merely illustrate the technical concept of the present invention and should not be used to limit the scope of protection of the present invention. For those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and all such improvements and modifications fall within the scope of protection of the claims of the present invention.

Claims

1. A device for quantitatively adding liquid sludge conditioner, characterized in that: The system includes a treatment tank (1), a storage tank (2), a metering pump (3), a moving mechanism (4), a nozzle (5), a sensor module (6), and a controller (7). The storage tank (2) is connected to the inlet of the metering pump (3) via a pipe (201), and a first valve (8) is provided on the pipe (201). The outlet of the metering pump (3) is connected to the nozzle (5) via a hose (301). The moving mechanism (4) includes a guide rail (401), a lead screw (402), a drive motor (403), and a moving platform (404). The guide rail (401) is fixed on both sides above the treatment tank (1), the lead screw (402) is parallel to the guide rail (401) and is connected to the output end of the drive motor (403) via a coupling, and the moving platform (404) is connected to the nozzle (5). The nut engages with the lead screw (402) and is slidably connected to the guide rail (401) via the slider (405); the nozzle (5) is mounted below the moving platform (404) via the rotating bracket (501), and the rotating bracket (501) is driven by the stepper motor (502) to achieve 0-90° pitch angle adjustment; the sensor module (6) includes a flow sensor (601) and a concentration sensor (602), the flow sensor (601) is installed in the middle of the hose (301), and the concentration sensor (602) is embedded in the inner wall of the storage tank (2); the controller (7) receives the signal from the sensor module (6) and outputs control commands to the metering pump (3), the drive motor (403), the stepper motor (502) and the first valve (8).

2. The liquid sludge conditioner quantitative dosing device according to claim 1, characterized in that: The mobile platform (404) and the lead screw (402) are orthogonally arranged, and the surface of the lead screw (402) is coated with an anti-corrosion coating.

3. The liquid sludge conditioner quantitative dosing device according to claim 1, characterized in that: The liquid storage tank (2) is equipped with a spiral stirrer (202), which has at least 3 stirring blades.

4. The liquid sludge conditioner quantitative dosing device according to claim 1, characterized in that: The upper middle part of the storage tank (2) is also provided with a liquid level sensor (603) for detecting the liquid level height in the storage tank; an electric heating device (203) is attached around the lower part of the outer wall of the storage tank for heating and keeping the liquid sludge conditioner in the storage tank warm.

5. The liquid sludge conditioner quantitative dosing device according to claim 1, characterized in that: The nozzle (5) adopts a fan-shaped atomizing nozzle, and the surface of the nozzle (5) is provided with a polytetrafluoroethylene anti-stick coating.

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