Sludge moisture content rapid detection device and method

Abstract

This invention discloses a rapid sludge moisture content detection device, comprising a controller, an actuator, a slide rail, a detection bracket, a clamping actuator, a detection surface, a detection bracket, and a cleaner. The actuator, clamping actuator, and detection surface are connected to the controller. The controller is fixed to the detection bracket, the slide rail is installed on both sides of the detection bracket, the cleaner is fixed to one side of the detection bracket, the detection bracket is fixedly connected to the slide rail, the actuator is installed on the detection bracket, the clamping actuator is installed on both sides of the detection bracket, and the detection surface is fixed to the end of the clamping actuator. The controller drives the actuator and the clamping actuator, which in turn move the detection bracket and the detection surface, clamping the sludge to be detected. The controller outputs voltage to the detection surface, using the voltage difference to drive current to flow through the sludge, measuring the current in the sludge to obtain its resistance or capacitance value, and determining the sludge moisture content based on the resistance or capacitance value.

Description

Technical Field

[0001] This invention relates to the field of sludge moisture content detection technology, and more specifically, to a rapid sludge moisture content detection device and method. Background Technology

[0002] Sludge contains a large amount of moisture during its production. Before subsequent resource utilization, the sludge generally needs to be dried to reduce its moisture content, i.e., lower the sludge water content. Strict requirements exist for sludge water content during resource utilization. For example, incineration or co-combustion requires low sludge water content, but it shouldn't be too dry to avoid excessive dust hindering transportation. Composting requires moderate sludge water content; too high a moisture content affects air circulation, while too low a moisture content affects microbial activity. Therefore, controlling the moisture content of dried sludge is crucial for better resource utilization. Traditional detection methods use oven heating loss-in-weight method, but this is time-consuming, and the results cannot be used for real-time production control. A method that allows for rapid detection and real-time control of drying equipment operation would have significant potential for widespread adoption. Summary of the Invention

[0003] The purpose of this invention is to overcome the defects and deficiencies of the prior art and provide a rapid detection device and method for sludge moisture content. The detection device has a simple structure and low manufacturing cost, and can conveniently and safely realize the rapid detection of sludge moisture content. It is suitable for large-scale promotion, and the detection method can stably and reliably detect sludge moisture content.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0005] A rapid sludge moisture content detection device includes a controller, an actuator, a slide rail, a detection bracket, a first clamping actuator, a first detection surface, a detection bracket, a cleaner, a second clamping actuator, and a second detection surface. The actuator, the first clamping actuator, the second clamping actuator, the first detection surface, and the second detection surface are electrically connected to the controller.

[0006] The controller is fixed to the top of the detection bracket, the slide rails are installed on both sides of the detection bracket, the cleaner is fixed to the bottom of one side of the detection bracket, the detection bracket is fixedly connected to the slide rail, the actuator is installed on the top of the detection bracket, the first clamping actuator and the second clamping actuator are installed on the bottom of both sides of the detection bracket, the first detection surface is fixed to the end of the first clamping actuator, the second detection surface is fixed to the end of the second clamping actuator, and the first detection surface and the second detection surface are set facing each other.

[0007] The controller outputs a signal to drive the actuator, the first clamping actuator, and the second clamping actuator. The actuator moves the detection bracket, the first clamping actuator moves the first detection surface, and the second clamping actuator moves the second detection surface. The first and second detection surfaces clamp the sludge to be detected. The controller outputs voltage to the first and second detection surfaces, and uses the voltage difference between them to drive current to flow through the sludge. The sludge current is measured to obtain the resistance or capacitance value of the sludge. Based on the resistance or capacitance value of the sludge, the moisture content of the sludge at that resistance or capacitance value is obtained.

[0008] Furthermore, the actuator, the first clamping actuator, and the second clamping actuator are pneumatic cylinders, electric push rods, or hydraulic cylinders.

[0009] Furthermore, the first and second detection surfaces are made of metallic conductive materials.

[0010] Furthermore, the sweeper uses a brush or an air knife.

[0011] Furthermore, the controller outputs either DC voltage or AC voltage.

[0012] A rapid method for detecting sludge moisture content, using the rapid sludge moisture content detection device described in any of the above-mentioned methods, includes the following steps:

[0013] The controller drives the actuator, which in turn moves the probe bracket downwards. The probe bracket then moves the first clamping actuator and the second clamping actuator downwards, immersing the first and second probe surfaces into the sludge to be tested.

[0014] The controller drives the first clamping actuator and the second clamping actuator. The first clamping actuator moves the first detection surface, and the second clamping actuator moves the second detection surface. The first and second detection surfaces clamp the sludge to be detected.

[0015] The controller outputs voltage to the first and second detection surfaces, and uses the voltage difference between the two to drive current to flow through the sludge. The current in the sludge is measured to obtain the resistance or capacitance value of the sludge.

[0016] The water content of the sludge can be determined based on its resistance or capacitance values.

[0017] The controller drives the first clamping actuator and the second clamping actuator. The first clamping actuator moves the first detection surface, and the second clamping actuator moves the second detection surface, releasing the sludge to be detected.

[0018] The controller drives the actuator, which in turn moves the detection bracket upward, causing the first and second detection surfaces to move upward and pass through the cleaner, which then cleans the first and second detection surfaces.

[0019] Furthermore, based on the resistivity or capacitance of the sludge, the sludge moisture content is determined, specifically including:

[0020] When the resistance value R of the sludge is the first resistance value R1, the moisture content of the sludge at this resistance value is determined by standard method, and this moisture content is set as the first reference value MC1.

[0021] When the resistance value R of the sludge is the second resistance value R2, the moisture content of the sludge at this resistance value is determined by standard method, and this moisture content is set as the second reference value MC2.

[0022] The slope and basic resistance value between the first reference value MC1 and the second reference value MC2 are obtained. When the basic resistance value of the sludge is subsequently measured, the water content MC of the sludge is calculated from the slope and the basic resistance value.

[0023] Furthermore, the first resistance value R1 is greater than the conventionally measured resistance value, and the second resistance value R2 is less than the conventionally measured resistance value.

[0024] Furthermore, based on the resistivity or capacitance of the sludge, the sludge moisture content is determined, specifically including:

[0025] When the capacitance value C of the sludge is the first capacitance value C1, the sludge moisture content at this capacitance value is determined by standard method, and this moisture content is set as the first reference value MC1.

[0026] When the capacitance value C of the sludge is the second capacitance value C2, the sludge moisture content at this capacitance value is determined by standard method, and this moisture content is set as the second reference value MC2.

[0027] The slope and capacitance base value between the first reference value MC1 and the second reference value MC2 are obtained. When the capacitance base value of the sludge is obtained in subsequent measurements, the moisture content MC of the sludge is calculated from the slope and capacitance base value.

[0028] Furthermore, the first capacitance value C1 is greater than the conventionally measured capacitance value, and the second capacitance value C2 is less than the conventionally measured capacitance value.

[0029] Compared with the prior art, the sludge moisture content rapid detection device of the present invention has an actuator, a first clamping actuator, a second clamping actuator, a first detection surface and a second detection surface electrically connected to a controller. The controller drives the actuator, which in turn drives the detection bracket to move up and down. The detection bracket then drives the first clamping actuator and the second clamping actuator to move up and down, facilitating the up and down movement of the first detection surface and the second detection surface to detect sludge.

[0030] The controller drives the first clamping actuator and the second clamping actuator. The first clamping actuator moves the first detection surface left and right, and the second clamping actuator moves the second detection surface left and right. The first and second detection surfaces clamp the sludge to be detected. The controller outputs voltage to the first and second detection surfaces. The voltage difference drives current to flow through the sludge. The sludge current is measured to obtain the resistance or capacitance value of the sludge. The moisture content of the sludge is obtained based on the resistance or capacitance value of the sludge.

[0031] The sludge moisture content rapid detection device of the present invention uses a controller to drive an actuator, which in turn moves a detection bracket upwards. This causes the first and second detection surfaces to move upwards and pass through a cleaner, which cleans the first and second detection surfaces, facilitating continuous and accurate measurement. This invention can be used for rapid detection of sludge moisture content, is convenient and safe to use, has a wide detection range, provides accurate and reliable results, and has a simple structure and low manufacturing cost, making it suitable for large-scale deployment. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of a rapid sludge moisture content detection device.

[0033] Figure 2 This is a schematic diagram of a rapid sludge moisture content detection device clamping sludge.

[0034] Figure 3 A schematic diagram of cleaning the sludge moisture content rapid detection device.

[0035] Figure 4 This is a flowchart illustrating a rapid method for detecting the moisture content of sludge.

[0036] Explanation of icon numbers:

[0037] 1-Controller; 2-Actuator; 3-Slide rail; 4-Detector bracket; 5-First clamping actuator; 6-First detection surface; 7-Detection bracket; 8-Sweeper; 9-Second clamping actuator; 10-Second detection surface. Detailed Implementation

[0038] The rapid sludge moisture content detection device and method of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0039] Please see Figure 1 and Figure 2The present invention discloses a rapid sludge moisture content detection device, including a controller 1, an actuator 2, a slide rail 3, a detection bracket 4, a first clamping actuator 5, a first detection surface 6, a detection bracket 7, a cleaner 8, a second clamping actuator 9, and a second detection surface 10. The actuator 2, the first clamping actuator 5, the second clamping actuator 9, the first detection surface 6, and the second detection surface 10 are electrically connected to the controller 1 via cables.

[0040] Please see Figure 1 and Figure 3 The controller 1 is fixed to the top of the detection bracket 7, the slide rails 3 are respectively installed on both sides of the detection bracket 7, the cleaner 8 is fixed to the bottom of one side of the detection bracket 7, the detection bracket 4 is fixedly connected to the slide rails 3, the actuator 2 is installed on the top of the detection bracket 4, the first clamping actuator 5 and the second clamping actuator 9 are installed on the bottom of both sides of the detection bracket 4, the first detection surface 6 is fixed to the end of the first clamping actuator 5, the second detection surface 10 is fixed to the end of the second clamping actuator 9, and the first detection surface 6 and the second detection surface 10 are set facing each other.

[0041] Please see Figure 1 and Figure 2 The controller 1 outputs a signal to drive the actuator 2, which in turn moves the probe bracket 4 up and down. The probe bracket 4 then moves the first clamping actuator 5 and the second clamping actuator 9 up and down. The controller 1 also outputs a signal to drive the first clamping actuator 5 and the second clamping actuator 9, which in turn moves the first probe surface 6 left and right. The second clamping actuator 9 then moves the second probe surface 10 left and right.

[0042] Please see Figure 1 and Figure 3 The first detection surface 6 and the second detection surface 10 clamp the sludge to be tested. The controller 1 outputs voltage to the first detection surface 6 and the second detection surface 10. The voltage difference between the first detection surface 6 and the second detection surface 10 drives current to flow through the sludge. The sludge current is measured to obtain the resistance or capacitance value of the sludge. Based on the resistance or capacitance value of the sludge, the moisture content of the sludge at that resistance or capacitance value is determined.

[0043] Specifically, actuator 2, the first clamping actuator 5, and the second clamping actuator 9 are pneumatic cylinders, electric push rods, or hydraulic cylinders, and can move linearly. The first detection surface 6 and the second detection surface 10 are made of conductive metal or other conductive materials. The cleaner 8 is a brush, an air knife, or other cleaning element. The cleaner 8 can be fixed or driven by a motor to rotate the brush for cleaning; in this case, the cleaner 8 is also electrically connected to the controller 1 via a cable. The controller 1 can output DC or AC voltage.

[0044] Based on the resistance or capacitance value of the sludge, the sludge moisture content at that resistance or capacitance value can be determined.

[0045] Specifically, when the sludge resistance R is the first resistance value R1, which is greater than the conventionally measured resistance value, the sludge moisture content at this resistance value is determined using the standard method for sludge moisture content detection, and this moisture content is set as the first reference value MC1. When the sludge resistance R is the second resistance value R2, which is less than the conventionally measured resistance value, the sludge moisture content at this resistance value is determined using the standard method for sludge moisture content detection, and this moisture content is set as the second reference value MC2. The slope and the basic resistance value between the first reference value MC1 and the second reference value MC2 are obtained. When the basic resistance value of the sludge is subsequently measured, the sludge moisture content MC is calculated using the slope and the basic resistance value.

[0046] Specifically, when the capacitance value C of the sludge is the first capacitance value C1, which is greater than the conventionally measured capacitance value, the sludge moisture content at this capacitance value is determined using the standard method for sludge moisture content detection, and this moisture content is set as the first reference value MC1. When the capacitance value C of the sludge is the second capacitance value C2, which is less than the conventionally measured capacitance value, the sludge moisture content at this capacitance value is determined using the standard method for sludge moisture content detection, and this moisture content is set as the second reference value MC2. The slope between the first reference value MC1 and the second reference value MC2 and the basic capacitance value are obtained. When the basic capacitance value of the sludge is subsequently measured, the moisture content MC of the sludge is calculated using the slope and the basic capacitance value.

[0047] The standard method for testing sludge moisture content is as follows: Take 1 kg of sludge, place it in a constant temperature oven at 105℃ for 24 hours, remove it, cool it, and weigh it. The sludge moisture content can be calculated from the difference in mass. The moisture content of sludge can also be determined based on its resistance or capacitance value. The working principle is that under certain temperature, distance, and density conditions, the resistance or capacitance value of sludge corresponds one-to-one with its moisture content; a specific resistance or capacitance value corresponds to a specific sludge moisture content value.

[0048] After calculating the moisture content of the sludge, controller 1 outputs a signal to drive the first clamping actuator 5 and the second clamping actuator 9. The first clamping actuator 5 moves the first detection surface 6 to the left, and the second clamping actuator 9 moves the second detection surface 10 to the right, releasing the sludge to be tested. Controller 1 then outputs a signal to drive the motion actuator 2, which moves the detection bracket 4 upward. The detection bracket 4 then moves the first clamping actuator 5 and the second clamping actuator 9 upward, causing the first detection surface 6 and the second detection surface 10 to move upward past the cleaner 8. The cleaner 8 cleans the first detection surface 6 and the second detection surface 10, making them ready for the next measurement.

[0049] Please see Figure 4 The present invention also discloses a rapid method for detecting sludge moisture content, which uses the rapid sludge moisture content detection device described in any of the above claims and includes the following steps:

[0050] S1: The controller 1 outputs a signal to drive the actuator 2, which in turn drives the probe bracket 4 to move downwards. The probe bracket 4 then drives the first clamping actuator 5 and the second clamping actuator 9 to move downwards, and the first probe surface 6 and the second probe surface 10 are placed into the sludge to be tested.

[0051] S2: The controller 1 outputs a signal to drive the first clamping actuator 5 and the second clamping actuator 9. The first clamping actuator 5 drives the first detection surface 6 to move to the right, and the second clamping actuator 9 drives the second detection surface 10 to move to the left. The first detection surface 6 and the second detection surface 10 clamp the sludge to be detected.

[0052] S3: The controller 1 outputs voltage to the first detection surface 6 and the second detection surface 10. The voltage difference between the first detection surface 6 and the second detection surface 10 drives the current to flow through the sludge. The current in the sludge is measured to obtain the resistance or capacitance value of the sludge.

[0053] S4: Based on the resistance or capacitance value of the sludge, determine the sludge moisture content at that resistance or capacitance value.

[0054] Specifically, when the sludge resistance R is the first resistance value R1, which is greater than the conventionally measured resistance value, the sludge moisture content at this resistance value is determined using the standard method for sludge moisture content detection, and this moisture content is set as the first reference value MC1. When the sludge resistance R is the second resistance value R2, which is less than the conventionally measured resistance value, the sludge moisture content at this resistance value is determined using the standard method for sludge moisture content detection, and this moisture content is set as the second reference value MC2. The slope and the basic resistance value between the first reference value MC1 and the second reference value MC2 are obtained. When the basic resistance value of the sludge is subsequently measured, the sludge moisture content MC is calculated using the slope and the basic resistance value.

[0055] Specifically, when the capacitance value C of the sludge is the first capacitance value C1, which is greater than the conventionally measured capacitance value, the sludge moisture content at this capacitance value is determined using the standard method for sludge moisture content detection, and this moisture content is set as the first reference value MC1. When the capacitance value C of the sludge is the second capacitance value C2, which is less than the conventionally measured capacitance value, the sludge moisture content at this capacitance value is determined using the standard method for sludge moisture content detection, and this moisture content is set as the second reference value MC2. The slope between the first reference value MC1 and the second reference value MC2 and the basic capacitance value are obtained. When the basic capacitance value of the sludge is subsequently measured, the moisture content MC of the sludge is calculated using the slope and the basic capacitance value.

[0056] S5: The controller 1 outputs a signal to drive the first clamping actuator 5 and the second clamping actuator 9. The first clamping actuator 5 drives the first detection surface 6 to move to the left, and the second clamping actuator 9 drives the second detection surface 10 to move to the right, releasing the sludge to be detected.

[0057] S6: The controller 1 outputs a signal to drive the actuator 2, which in turn drives the probe bracket 4 to move upward, causing the first probe surface 6 and the second probe surface 10 to move upward and pass through the cleaner 8. The cleaner 8 cleans the first probe surface 6 and the second probe surface 10, making it easier for the next measurement.

[0058] The standard method for detecting sludge moisture content is as follows: Take 1 kg of sludge, place it in a constant temperature oven at 105℃ for 24 hours, remove it, cool it, and weigh it. The sludge moisture content can be calculated from the mass difference. The working principle of this invention's rapid sludge moisture content detection method is based on the following: Under certain temperature, distance, and density conditions, the resistance or capacitance value of sludge corresponds one-to-one with its moisture content; a specific resistance or capacitance value corresponds to a specific sludge moisture content value.

[0059] In summary, in the sludge moisture content rapid detection device of the present invention, the actuator 2, the first clamping actuator 5, the second clamping actuator 9, the first detection surface 6, and the second detection surface 10 are electrically connected to the controller 1. The controller 1 drives the actuator 2, which in turn drives the detection bracket 4 to move up and down. The detection bracket 4 then drives the first clamping actuator 5 and the second clamping actuator 9 to move up and down, facilitating the up and down movement of the first detection surface 6 and the second detection surface 10 to detect sludge.

[0060] The controller 1 drives the first clamping actuator 5 and the second clamping actuator 9. The first clamping actuator 5 drives the first detection surface 6 to move left and right, and the second clamping actuator 9 drives the second detection surface 10 to move left and right. The first detection surface 6 and the second detection surface 10 clamp the sludge to be detected. The controller 1 outputs voltage to the first detection surface 6 and the second detection surface 10. The voltage difference drives the current to flow through the sludge. The sludge current is measured to obtain the resistance value or capacitance value of the sludge. Based on the resistance value or capacitance value of the sludge, the moisture content of the sludge is obtained.

[0061] The sludge moisture content rapid detection device of the present invention comprises a controller 1 driving an actuator 2, which in turn moves a detection bracket 4 upward, causing a first detection surface 6 and a second detection surface 10 to move upward past a cleaner 8. The cleaner 8 cleans the first detection surface 6 and the second detection surface 10, facilitating continuous and accurate measurement. This invention can be used for rapid detection of sludge moisture content, is convenient and safe to use, has a wide detection range, provides accurate and reliable results, and has a simple structure and low manufacturing cost, making it suitable for large-scale promotion.

[0062] The above description is a detailed description of the preferred embodiments of the present invention. However, the embodiments are not intended to limit the scope of the patent application of the present invention. All equivalent changes or modifications made under the technical spirit disclosed in the present invention should fall within the patent scope covered by the present invention.

Claims

1. A rapid sludge moisture content detection device, characterized in that, It includes a controller, an actuator, a slide rail, a detection bracket, a first clamping actuator, a first detection surface, a detection bracket, a cleaner, a second clamping actuator, and a second detection surface. The actuator, the first clamping actuator, the second clamping actuator, the first detection surface, and the second detection surface are electrically connected to the controller. The controller is fixed to the top of the detection bracket, the slide rails are installed on both sides of the detection bracket, the cleaner is fixed to the bottom of one side of the detection bracket, the detection bracket is fixedly connected to the slide rail, the actuator is installed on the top of the detection bracket, the first clamping actuator and the second clamping actuator are installed on the bottom of both sides of the detection bracket, the first detection surface is fixed to the end of the first clamping actuator, the second detection surface is fixed to the end of the second clamping actuator, and the first detection surface and the second detection surface are set facing each other. The controller outputs a signal to drive the actuator, the first clamping actuator, and the second clamping actuator. The actuator moves the detection bracket, the first clamping actuator moves the first detection surface, and the second clamping actuator moves the second detection surface. The first and second detection surfaces clamp the sludge to be detected. The controller outputs voltage to the first and second detection surfaces, and uses the voltage difference between them to drive current to flow through the sludge. The sludge current is measured to obtain the resistance or capacitance value of the sludge. Based on the resistance or capacitance value of the sludge, the moisture content of the sludge at that resistance or capacitance value is obtained.

2. The rapid sludge moisture content detection device according to claim 1, characterized in that, The actuator, the first clamping actuator, and the second clamping actuator are pneumatic cylinders, electric push rods, or hydraulic cylinders.

3. The rapid sludge moisture content detection device according to claim 1, characterized in that, The first and second detection surfaces are made of metallic conductive materials.

4. The rapid sludge moisture content detection device according to claim 1, characterized in that, The sweeper uses either a brush or an air knife.

5. The rapid sludge moisture content detection device according to claim 1, characterized in that, The controller outputs either DC or AC voltage.

6. A rapid method for detecting the moisture content of sludge, characterized in that, The application of the rapid sludge moisture content detection device according to any one of claims 1 to 5 includes the following steps: The controller drives the actuator, which in turn moves the probe bracket downwards. The probe bracket then moves the first clamping actuator and the second clamping actuator downwards, immersing the first and second probe surfaces into the sludge to be tested. The controller drives the first clamping actuator and the second clamping actuator. The first clamping actuator moves the first detection surface, and the second clamping actuator moves the second detection surface. The first and second detection surfaces clamp the sludge to be detected. The controller outputs voltage to the first and second detection surfaces, and uses the voltage difference between the two to drive current to flow through the sludge. The current in the sludge is measured to obtain the resistance or capacitance value of the sludge. Based on the resistance or capacitance value of the sludge, the water content of the sludge at that resistance or capacitance value can be obtained. The controller drives the first clamping actuator and the second clamping actuator. The first clamping actuator moves the first detection surface, and the second clamping actuator moves the second detection surface, releasing the sludge to be detected. The controller drives the actuator, which in turn moves the detection bracket upward, causing the first and second detection surfaces to move upward and pass through the cleaner, which then cleans the first and second detection surfaces.

7. The rapid method for detecting sludge moisture content according to claim 6, characterized in that, Based on the resistivity or capacitance value of the sludge, the sludge moisture content at that resistance or capacitance value is determined, specifically including: When the resistance value R of the sludge is the first resistance value R1, the moisture content of the sludge at this resistance value is determined by standard method, and this moisture content is set as the first reference value MC1. When the resistance value R of the sludge is the second resistance value R2, the moisture content of the sludge at this resistance value is determined by standard method, and this moisture content is set as the second reference value MC2. The slope and basic resistance value between the first reference value MC1 and the second reference value MC2 are obtained. When the basic resistance value of the sludge is subsequently measured, the water content MC of the sludge is calculated from the slope and the basic resistance value.

8. The rapid method for detecting sludge moisture content according to claim 7, characterized in that, The first resistance value R1 is greater than the conventionally measured resistance value, and the second resistance value R2 is less than the conventionally measured resistance value.

9. The rapid method for detecting sludge moisture content according to claim 6, characterized in that, Based on the resistivity or capacitance value of the sludge, the sludge moisture content at that resistance or capacitance value is determined, specifically including: When the capacitance value C of the sludge is the first capacitance value C1, the moisture content of the sludge at this capacitance value is determined by standard method, and this moisture content is set as the first reference value MC1. When the capacitance value C of the sludge is the second capacitance value C2, the moisture content of the sludge at this capacitance value is determined by standard method, and this moisture content is set as the second reference value MC2. The slope and capacitance base value between the first reference value MC1 and the second reference value MC2 are obtained. When the capacitance base value of the sludge is obtained in subsequent measurements, the moisture content MC of the sludge is calculated from the slope and capacitance base value.

10. The rapid method for detecting sludge moisture content according to claim 9, characterized in that, The first capacitance value C1 is greater than the conventionally measured capacitance value, and the second capacitance value C2 is less than the conventionally measured capacitance value.

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