A system for detecting moisture content of materials in a filter plate

Abstract

The utility model relates to water content detection technical field, concretely relates to a kind of system for real-time detection of mud cake moisture content in filter press, including at least two filter plates, fixing device and microwave moisture detection rod, two filter plates are respectively front filter plate and rear filter plate, front filter plate and rear filter plate are pressed together when working, filter cavity is formed between front and rear filter plates after pressing together;The rear surface of front filter plate has semicircular through-hole, and the front surface of rear filter plate also has semicircular through-hole, when front filter plate and rear filter plate are pressed together, semicircular through-hole between front and rear filter plates becomes an integral through-hole, integral through-hole leads to filter cavity from the upper surface of filter plate, and fixing device is installed on the semicircular through-hole of one of filter plate, the fixing device is fixed at semicircular through-hole, then microwave moisture detection rod is fixed on fixing device, and the detection section of microwave moisture detection rod is inserted into filter cavity, and the mud in filter cavity can be detected;The filter plate of this installation fixing device is detection filter plate;There is sealing ring in the semicircular through-hole of detection filter plate, and sealing ring is clamped between microwave moisture detection rod and semicircular through-hole inner cavity wall, when two filter plates are pasted, sealing ring is clamped between integral through-hole inner cavity wall and microwave moisture detection rod, such detection system can directly detect the water content of filter mud in filter plate, detection result is accurate, and is not affected by salt content in filter mud.

Description

Technical Field

[0001] This utility model relates to the field of moisture detection technology, specifically to a device and system for real-time detection of the moisture content of filter cake inside a filter press. Background Technology

[0002] In industrial production, such as mining, chemical, food, and pharmaceutical industries, filter presses are widely used in solid-liquid separation processes. However, existing filter presses lack the means to detect the moisture content of the filter cake in real time and accurately. Traditional detection methods often involve taking samples and analyzing them in a laboratory after filtration. This method is time-consuming and cannot adjust the operating parameters of the filter press in a timely manner based on the moisture content of the filter cake to optimize its moisture content.

[0003] Patent No. 202311632444.2, entitled "An Intelligent Plate and Frame Filter Press, Control Method, System, and Electronic Equipment," addresses this problem with an improvement. The specific solution is as follows: a detection system comprises a filter press body, multiple filter cake moisture detection modules, and a control cabinet. The moisture detection modules are respectively installed on multiple filter plates of the filter press body, with electrodes mounted in the filter plate frame. These electrodes are connected to a resistivity monitoring and analysis instrument, which detects the electrical signal of moisture within the filter chamber and converts this signal into a real-time moisture value.

[0004] This method effectively detects the moisture content of the filter cake in real time, but it has some drawbacks: First, the electrodes are located inside the filter plates, rather than between them, meaning they are not in direct contact with the material but are in a state of detecting filtered water, which can lead to inaccurate electrode readings. Second, if the material being tested has a high salt content, such as potassium chloride or sodium chloride at 20%-30%, the electrode resistance will be affected by these electrolytes when they encounter sodium chloride and potassium chloride. These electrolytes alter the conductivity and dielectric constant of the solution, thus affecting the test accuracy and leading to inaccurate results. Summary of the Invention

[0005] The purpose of this invention is to address the aforementioned shortcomings by providing a system for detecting the moisture content of materials within a filter plate. By integrating a specially designed moisture detection device into the filter plate of a filter press, and combining sensor technology and data processing algorithms, the system enables real-time and accurate detection of the moisture content of materials during the filtration process, thereby optimizing the production process and improving product quality and production efficiency.

[0006] This invention employs microwave technology and utilizes a microwave moisture detection rod to detect the moisture content of the mud material inside a filter plate. Specifically, a system for detecting the moisture content of materials inside a filter plate includes at least two filter plates, a fixing device, and a microwave moisture detection rod. The two filter plates are a front filter plate and a rear filter plate. During operation, the front and rear filter plates are pressed together, forming a filter cavity between them. The rear surface of the front filter plate has a semi-circular through-hole, and the front surface of the rear filter plate also has a semi-circular through-hole. After the front and rear filter plates are pressed together, the semi-circular through-hole between the front and rear filter plates becomes a single through-hole, extending from the filter plate... The upper surface of the filter plate leads to the filter cavity. A fixing device is installed on the semi-circular through hole of one of the filter plates. The fixing device is fixed at the semi-circular through hole. The microwave moisture detection rod is fixed on the fixing device. The detection section of the microwave moisture detection rod extends into the filter cavity and can detect the moisture of the mud in the filter cavity. The filter plate with the fixing device is a detection filter plate. A sealing ring is installed in the semi-circular through hole of the detection filter plate. The sealing ring is sandwiched between the microwave moisture detection rod and the inner wall of the semi-circular through hole. When the two filter plates are attached, the sealing ring is sandwiched between the inner wall of the through hole and the microwave moisture detection rod.

[0007] Furthermore, the fixing device is a flange, comprising at least two flanges: an upper flange and a lower flange. The lower flange is larger than the upper flange, and the larger portion of the lower flange has mounting holes. Correspondingly, screw holes are provided on the upper surface of the filter plate. During installation, screws are passed through the mounting holes and screwed into the screw holes, thus fixing the lower flange onto the filter plate. The upper and lower flanges are then connected and fixed together by bolts and nuts. The microwave moisture detection rod is fixedly installed in the center hole of the flange, with the detection section of the microwave moisture detection rod extending downward into the filter cavity. The connecting wire of the microwave moisture detection rod is led out and connected to the external detection equipment control system.

[0008] Furthermore, the microwave moisture detection rod has a threaded section, and the flange center hole has an internal thread. The microwave moisture detection rod is fixedly installed at the flange center hole through the threaded section.

[0009] Alternatively, the microwave moisture detector can be bonded to the center hole of the flange using strong adhesive.

[0010] Furthermore, it also includes a display module connected to a microwave moisture detection rod, and the display module is connected to a controller to display the detected moisture content of the filter cake in real time.

[0011] Furthermore, an alarm module is connected to the microwave moisture detection rod. When the moisture content of the filter cake is higher or lower than the preset threshold, the alarm module will issue an audible and visual alarm signal to remind the operator to handle the situation in a timely manner.

[0012] Furthermore, the fixing device consists of a steel plate and a base. The steel plate has mounting holes, and the detection filter plate has screw holes. During installation, screws are passed through the mounting holes and screwed into the screw holes to fix the steel plate on the detection filter plate. Then, the base is welded onto this steel plate. The base has a structure with a central hole, and the microwave moisture detection rod is fixedly installed in the central hole of the base. The detection section of the microwave moisture detection rod extends downward into the filter cavity.

[0013] The beneficial effects of this invention are: such a system for detecting the moisture content of materials inside a filter press can detect the moisture content of the filter cake in real time, and the test results are accurate and are not affected by the salt content in the filter cake. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the system for detecting the moisture content of materials inside the filter plate in Example 1;

[0015] Figure 2 yes Figure 1 Enlarged view of point A;

[0016] Figure 3 yes Figure 1 A schematic diagram showing the concealed front filter.

[0017] Figure 4 yes Figure 3 Enlarged view of point B;

[0018] Figure 5 yes Figure 1 An explosion diagram;

[0019] Figure 6 yes Figure 5 Enlarged view of point C;

[0020] Figure 7 This is a schematic diagram of Embodiment 1 with a display module connected;

[0021] Figure 8 This is a schematic diagram of the detection system in Example 2;

[0022] The components are as follows: 001, front filter plate; 002, rear filter plate; 003, filter chamber; 004, semi-circular through hole; 005, microwave moisture detection rod; 006, sealing ring; 007, upper flange; 008, lower flange; 009, mounting hole; 010, screw hole; 011, bolt and nut; 012, threaded section; 013, internal thread; 014, display module; 015, steel plate; 016, base. Detailed Implementation

[0023] The technical solution of this utility model will be further described below with reference to the embodiments.

[0024] Example 1: As Figure 1-6 A system for detecting the moisture content of materials within a filter plate includes at least two filter plates, a fixing device, and a microwave moisture detection rod. The two filter plates are a front filter plate 001 and a rear filter plate 002. During operation, the front and rear filter plates are pressed together, forming a filter cavity 003 between them. The rear surface of the front filter plate has a semi-circular through hole 004, and the front surface of the rear filter plate also has a semi-circular through hole 004. After the front and rear filter plates are pressed together, the semi-circular through hole between them becomes a continuous through hole, which extends from the upper surface of the filter plate to the filter cavity. A fixing device is installed on the semi-circular through hole of one of the filter plates. The fixing device is fixed at the semi-circular through hole, and then the microwave moisture detection rod 005 is fixed on the fixing device. The detection section of the microwave moisture detection rod extends into the filter cavity, enabling the detection of moisture content in the mud within the filter cavity. The filter plate with the fixing device is defined as a detection filter plate.

[0025] Additionally, a sealing ring 006 is installed in the semi-circular through hole of the detection filter plate. The sealing ring 006 is clamped between the microwave moisture detection rod and the inner wall of the semi-circular through hole. When the two filter plates are attached, the sealing ring is clamped between the inner wall of the through hole and the microwave moisture detection rod, which can seal and prevent the material in the filter cavity from leaking out.

[0026] In this embodiment, the fixing device is specifically a flange, such as Figure 2 , 4 6. The flange includes at least two pieces: an upper flange 007 and a lower flange 008. The lower flange is larger than the upper flange, and the larger part of the lower flange has mounting holes 009. Correspondingly, there are screw holes 010 on the upper surface of the filter plate. During installation, screws are passed through the mounting holes and screwed into the screw holes to fix the lower flange on the filter plate. Then, the upper flange and the lower flange are connected and fixed by bolts and nuts 011. The microwave moisture detection rod is fixedly installed in the center hole of the flange. The detection section of the microwave moisture detection rod extends downward into the filter cavity. The connecting wire of the microwave moisture detection rod is led out and connected to the external detection equipment control system.

[0027] Usage and Effects: The filter plates in this embodiment are installed on a filter press and used when pressing materials on the filter press. They can detect the moisture content of the material inside the filter plates in real time. Specifically, when pressing, two filter plates are put together to form a filter chamber. The filter chamber is a sealed space, and due to the setting of a sealing ring, there will be no slurry leakage. Then, during the pressing, the moisture content of the material in the filter chamber changes constantly. The microwave moisture detection rod detects the moisture status and transmits the signal to the detection equipment control system for subsequent processing.

[0028] Because the detection section of the detection rod directly contacts the material, the detection results are accurate. Furthermore, microwave detection of moisture is not affected by the salt content in the material, resulting in more accurate detection results compared to electrode detection in the prior art.

[0029] To elaborate further, such as Figure 6 The microwave moisture detector is fixedly installed in the center hole of the flange by means of threads. Specifically, the microwave moisture detector has a threaded section 012, the center hole of the flange has an internal thread 013, and the microwave moisture detector is fixedly screwed into the center hole of the flange by means of the threaded section.

[0030] Furthermore, the microwave moisture detection rod is bonded to the center hole of the flange using strong adhesive.

[0031] Both methods involve installing the microwave moisture detector rod inside the center hole of the flange, and both have the advantages of low cost and easy installation.

[0032] To elaborate further, such as Figure 7 As shown, it also includes a display module 014 connected to the detection rod and a controller, used to display the detected moisture content of the filter cake in real time.

[0033] Furthermore, an alarm module is connected to the detection rod. When the moisture content of the filter cake is higher or lower than the preset critical value, the alarm module will issue an audible and visual alarm signal to remind the operator to handle the situation in a timely manner.

[0034] Example 2: As Figure 8 The difference from Embodiment 1 is that the fixing device is a steel plate 015 and a base 016. The steel plate has mounting holes, and the detection filter plate has screw holes. During installation, screws pass through the mounting holes and are screwed into the screw holes to fix the steel plate on the detection filter plate. Then, the base is welded to this steel plate. The base has a structure with a central hole. The microwave moisture detection rod is fixedly installed in the central hole of the base, and the detection section of the microwave moisture detection rod extends downward into the filter cavity.

[0035] The installation method using steel plates and bases has the advantage of lower cost.

[0036] Furthermore, the microwave moisture detector is fixedly installed in the center hole of the base by means of threads. Specifically, the microwave moisture detector has a threaded section, the center hole of the base has internal threads, and the microwave moisture detector is fixedly screwed into the center hole of the flange by the threaded section.

[0037] Furthermore, the microwave moisture detection rod is bonded to the center hole of the base with strong adhesive.

[0038] Similar to the method described in Example 1 above.

[0039] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A system for detecting the moisture content of materials inside a filter plate, characterized in that: The device includes at least two filter plates, a fixing device, and a microwave moisture detection rod. The two filter plates are a front filter plate and a rear filter plate. During operation, the front and rear filter plates are pressed together, forming a filter cavity between them. The rear surface of the front filter plate has a semi-circular through hole, and the front surface of the rear filter plate also has a semi-circular through hole. After the front and rear filter plates are pressed together, the semi-circular through hole between the front and rear filter plates becomes a continuous through hole, which leads from the upper surface of the filter plate to the filter cavity. A fixing device is installed on the semi-circular through hole of one of the filter plates. The fixing device is fixed at the semi-circular through hole, and the microwave moisture detection rod is fixed on the fixing device. The detection section of the microwave moisture detection rod extends into the filter cavity, enabling the detection of moisture in the mud within the filter cavity. This filter plate with the fixing device is a detection filter plate. A sealing ring is installed in the semi-circular through hole of the detection filter plate, and the sealing ring is clamped between the microwave moisture detection rod and the inner wall of the semi-circular through hole. When the two filter plates are attached together, the sealing ring is clamped between the inner wall of the continuous through hole and the microwave moisture detection rod.

2. The system for detecting the moisture content of materials inside a filter plate according to claim 1, characterized in that: The fixing device is a flange, comprising at least two flanges: an upper flange and a lower flange. The lower flange is larger than the upper flange, and the larger portion of the lower flange has mounting holes. Correspondingly, screw holes are provided on the upper surface of the filter plate. During installation, screws are passed through the mounting holes and screwed into the screw holes to fix the lower flange on the filter plate. The upper and lower flanges are then connected and fixed together by bolts and nuts. The microwave moisture detection rod is fixedly installed in the center hole of the flange, with the detection section of the microwave moisture detection rod extending downward into the filter cavity. The connecting wire of the microwave moisture detection rod is led out and connected to the external detection equipment control system.

3. The system for detecting the moisture content of materials inside a filter plate according to claim 2, characterized in that: The microwave moisture detector has a threaded section, and the flange center hole has an internal thread. The microwave moisture detector is fixedly installed at the flange center hole through the threaded section.

4. The system for detecting the moisture content of materials inside a filter plate according to claim 2, characterized in that: The microwave moisture detection rod is bonded to the center hole of the flange with strong adhesive.

5. The system for detecting the moisture content of materials inside a filter plate according to claim 1, characterized in that: The fixing device consists of a steel plate and a base. The steel plate has mounting holes, and the detection filter plate has screw holes. During installation, screws are screwed into the screw holes through the mounting holes to fix the steel plate on the detection filter plate. Then, the base is welded onto the steel plate. The base has a structure with a central hole. The microwave moisture detection rod is fixedly installed in the central hole of the base, and the detection section of the microwave moisture detection rod extends downward into the filter cavity.

6. The system for detecting the moisture content of materials inside a filter plate according to claim 1, 2, or 5, characterized in that: It also includes a display module connected to a microwave moisture detection rod, and the display module is connected to a controller to display the detected moisture content of the filter cake in real time.

7. The system for detecting the moisture content of materials inside a filter plate according to claim 1, 2, or 5, characterized in that: It is also equipped with an alarm module connected to a microwave moisture detection rod. When the moisture content of the filter cake is higher or lower than the preset threshold, the alarm module will issue an audible and visual alarm signal to remind the operator to deal with it in time.

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