A pre-sampling device with filtering function for water content meter

Abstract

The utility model belongs to water content appearance technical field especially a kind of water content appearance front sampling device with filtering function, including the filter tube of flange plate installation, the one end of filter tube is provided with filter mechanism, the filter mechanism includes filter screen, the filter screen is filtered to the medium to be measured entering the filter tube by its pore structure, by setting adsorption mechanism, the ferromagnetic metal particles in the medium to be measured are magnetically attracted, handle is provided on mounting bracket, it is convenient for staff to take down mounting bracket by handle, mounting bracket and magnetic ring can adopt bolt fixation, magnetic ring can adopt multi-pole magnetic ring, it is a kind of annular magnet with multiple N-pole and S-pole alternate arrangement on surface, magnetize by professional magnetizing equipment, make its surface form multiple magnetic poles, for example, four-pole, six-pole or eight-pole etc., the material of magnetic ring can adopt neodymium iron boron magnetic ring, with high magnetic energy product and strong magnetic field, suitable for adsorbing tiny ferromagnetic particles.

Description

Technical Field

[0001] This utility model relates to the field of moisture content meter technology, and in particular to a pre-sampling device for a moisture content meter with filtration function. Background Technology

[0002] A moisture meter, also known as a moisture analyzer, moisture detector, or moisture measuring instrument, is an instrument used to detect the moisture content of various organic and inorganic solids, liquids, and gases. Based on their measurement principles, moisture meters can be broadly classified into two categories: physical measurement methods and chemical measurement methods. Moisture meters are widely used in petrochemical, food processing, and environmental monitoring fields to monitor the moisture content of samples in real time, providing a basis for process control and product quality. Among these, the direct-insertion probe is a common detection element in moisture meters, characterized by its direct insertion into the sample medium for online detection.

[0003] In existing technologies, direct-insertion probes are inserted directly into the medium to be tested for detection. However, the medium often contains solid particles such as mud, rust, and crystals. These particles can directly enter the probe's detection area, adhere to the probe surface, or block the flow channel, leading to a decrease in detection accuracy or even failure. Furthermore, in scenarios with high ferromagnetic metal particle content, such as petrochemical and mining wastewater, tiny metal particles entering the probe can cause scratches on the probe surface or signal interference, affecting measurement accuracy. Therefore, a pre-sampling device with a filtration function for moisture content meters is proposed to solve the aforementioned problems. Utility Model Content

[0004] To address the technical problem in existing technologies where the measured medium often contains solid particles such as mud, rust, and crystals, which can directly enter the probe detection area, adhere to the probe surface, or block the flow channel, and where tiny metal particles entering the probe can cause scratches on the probe surface or signal interference, thus affecting the accuracy of the measurement, this application provides a pre-sampling device for a moisture meter with a filtration function.

[0005] This utility model proposes a pre-sampling device for a moisture meter with filtration function, including a filter tube with a flange installed, and a filtration mechanism at one end of the filter tube. The filtration mechanism includes a filter screen, which filters the test medium entering the filter tube through its pore structure.

[0006] The filter tube is equipped with an adsorption mechanism, which includes a magnetic ring with a sealing ring. The magnetic ring magnetically adsorbs ferromagnetic metal particles in the test medium through the magnetic field gradient it generates.

[0007] Preferably, the filtration mechanism further includes a sealing ring, which is slidably fitted onto the curved surface of the filter screen annular tube.

[0008] The above technical solution uses a sliding connection between the sealing ring and the filter screen to fix the filter screen without affecting its disassembly, so that it can be replaced later. The sealing ring can be made of EPDM rubber, which has excellent heat resistance, chemical corrosion resistance and elasticity, and is suitable for long-term use in oil and water media. The filter screen is made of 316 stainless steel, which has high strength, corrosion resistance, high temperature resistance and smooth surface, making it easy to clean.

[0009] Preferably, the filter screen is slidably inserted into the inner wall of the left annular groove of the filter tube, and the right surface of the sealing ring is in contact with the left surface of the filter tube.

[0010] The above technical solution uses a sliding connection between the filter screen and the filter tube, fixing them while allowing for disassembly for subsequent cleaning and replacement. The filter screen physically filters solid particles in the test medium through its porous structure, effectively preventing large impurities from entering subsequent detection stages, avoiding probe clogging or contamination, and improving measurement accuracy. A sealing ring contacts the filter tube to seal it and prevent media leakage. The filter tube connects to the flange interface of the direct-insertion probe via a flange and is secured with bolts. Metal spiral wound gaskets or rubber gaskets are installed between the flanges to ensure a tight seal. The flange dimensions, bore diameter, and bolt hole positions of the filter tube must perfectly match the flange interface of the direct-insertion probe and can be customized according to probe parameters during manufacturing. The filter tube and flange can be made of 316 stainless steel, which has advantages such as corrosion resistance, high temperature resistance, and high mechanical strength, making it suitable for industrial fluid environments.

[0011] Preferably, a ball rod is slidably inserted into the inner wall of the movable groove of the filter annular tube, a spring is fixedly installed at one end of one of the ball rods, and one end of the spring is fixedly installed with one end of the other ball rod, the spring being located in the movable groove of the filter annular tube.

[0012] The above technical solution involves a ball rod that slides into the movable groove of the filter screen, fixing it without affecting its extension and retraction. Slider blocks are located on both sides of one end of the ball rod, and a matching groove is provided within the movable groove to limit its movement and prevent it from falling off. The ball rod is made of 316 stainless steel, which possesses high strength, corrosion resistance, and fatigue resistance, making it suitable for environments with frequent extension and retraction and stress. Springs are used to fix the two ball rods separately. When the ball rod on the filter screen is compressed and contracted by the movable groove, it moves to the limiting groove, where the springs reset it, locking the ball rod into the limiting groove and thus fixing the filter screen. The springs can be made of 316 stainless steel spring wire, or, under special conditions, piano wire or oil-quenched and tempered steel wire to ensure elastic stability and fatigue resistance.

[0013] Preferably, the inner wall of the left end of the filter tube is provided with a limiting groove with a triangular cross-section, and the hemisphere of the ball rod is engaged with the inner wall of the limiting groove.

[0014] Through the above technical solution, a limiting groove is opened in the filter tube. The ball rod, spring and limiting groove are all distributed in a ring array. The cross-section of the limiting groove is triangular, which has a guiding function, making it easy for the ball rod to automatically center and embed during installation. After locking, a self-locking structure is formed, which can effectively resist vibration or fluid impact and improve structural reliability. By locking the ball rod through the limiting groove, the ball rod can be disengaged from the limiting groove by applying external force, thereby realizing the quick disassembly of the filter screen.

[0015] Preferably, the adsorption mechanism further includes a mounting bracket with a handle, which is fixedly installed in the arc-shaped mounting groove of the filter tube by bolts.

[0016] With the above technical solution, the mounting bracket is fixed to the filter tube by bolts, which not only fixes it but also makes it easy to disassemble. The mounting bracket is also made of 316 stainless steel and is equipped with handles so that workers can easily remove the mounting bracket by using the handles.

[0017] Preferably, the inner wall of the mounting bracket is fixedly installed with the magnetic ring with a sealing ring, and the magnetic ring is slidably inserted into the inner wall of the arc-shaped mounting groove of the filter tube.

[0018] The above technical solution involves fixing the magnetic ring to the mounting bracket using bolts. The magnetic ring and its sealing ring can be fixed with epoxy resin adhesive. The magnetic ring can be a multi-pole magnetic ring, which is a ring magnet with multiple alternating N and S poles on its surface. It is magnetized using professional magnetization equipment to form multiple magnetic poles on its surface, such as four, six, or eight poles. The magnetic ring can be made of neodymium iron boron, which has high magnetic energy product and strong magnetic field, suitable for adsorbing tiny ferromagnetic particles. Surface treatments such as nickel plating or epoxy resin coating are applied. The magnetic ring is slidably inserted into the filter tube, fixing it without affecting its disassembly and replacement.

[0019] The beneficial effects of this utility model are as follows: 1. By setting up a filtration mechanism, the test medium entering the filter tube is filtered. The sealing ring and the filter screen are slidably sleeved, fixing the filter screen without affecting its disassembly. The filter screen physically filters solid particles in the test medium through its pore structure, effectively preventing large particles from entering the subsequent detection stage. The sealing ring contacts the filter tube to seal it and prevent media leakage. When the ball rod on the filter screen is squeezed and contracted by the movable groove, it moves to the limiting groove, where the spring can reset it, locking the ball rod in the limiting groove, thus fixing the filter screen. By locking the ball rod in the limiting groove, external force can be applied to disengage the ball rod from the limiting groove, thus achieving rapid disassembly of the filter screen. This solves the technical problem in the existing technology where the direct insertion probe is directly inserted into the test medium for detection, but the test medium often contains solid particles such as mud, rust, and crystals. These particles can directly enter the probe detection area, adhere to the probe surface, or block the flow channel, leading to a decrease in detection accuracy or even failure.

[0020] 2. By setting up an adsorption mechanism, ferromagnetic metal particles in the test medium are magnetically adsorbed. The mounting frame is equipped with a handle for easy removal by the operator. The mounting frame and the magnetic ring can be fixed with bolts. The magnetic ring can be a multi-pole magnetic ring, which is a ring magnet with multiple alternating N and S poles on its surface. It is magnetized by professional magnetization equipment to form multiple magnetic poles on its surface, such as four-pole, six-pole, or eight-pole. The magnetic ring can be made of neodymium iron boron, which has high magnetic energy product and strong magnetic field, making it suitable for adsorbing tiny ferromagnetic particles. This solves the technical problem in existing technologies where tiny metal particles entering the probe in scenarios with high ferromagnetic metal particle content, such as petrochemical and mining wastewater, can cause scratches on the probe surface or signal interference, affecting the measurement accuracy. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of a pre-sampling device for a water content meter with filtration function proposed in this utility model; Figure 2 This is a perspective view of the sealing ring structure of a pre-sampling device with filtration function for a water content meter proposed in this utility model; Figure 3 A perspective view of the filter structure of a pre-sampling device with filtration function for a water content meter proposed in this utility model; Figure 4 A perspective view of the ball rod structure of a pre-sampling device for a water content meter with filtration function proposed in this utility model; Figure 5 A perspective view of the spring structure of a pre-sampling device with filtration function for a water content meter proposed in this utility model; Figure 6 This is a perspective view of the mounting frame structure of a pre-sampling device with filtration function for a water content meter proposed in this utility model; Figure 7 This is a perspective view of the magnetic ring structure of a pre-sampling device for a water content meter with filtration function proposed in this utility model.

[0022] In the diagram: 1. Filter tube; 2. Sealing ring; 21. Filter screen; 3. Ball rod; 31. Spring; 4. Limiting groove; 5. Mounting bracket; 6. Magnetic ring. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0024] Reference Figures 1-7 A pre-sampling device for a moisture meter with filtration function includes a filter tube 1 with a flange installed. One end of the filter tube 1 is provided with a filtration mechanism, which includes a filter screen 21. The filter screen 21 filters the test medium entering the filter tube 1 through its pore structure.

[0025] To avoid affecting the disassembly of the sealing ring 2, the filter mechanism also includes a sealing ring 2. The sealing ring 2 is slidably sleeved on the curved surface of the annular tube of the filter screen 21. By slidingly sleeved with the filter screen 21, the sealing ring 2 is fixed without affecting the disassembly of the sealing ring 2, so that it can be replaced later. The material of the sealing ring 2 can be EPDM rubber, which has excellent heat resistance, chemical corrosion resistance and elasticity, and is suitable for long-term use in oil and water media. The material of the filter screen 21 is 316 stainless steel, which has high strength, corrosion resistance, high temperature resistance and smooth surface, making it easy to clean.

[0026] To prevent probe clogging or contamination, filter screen 21 is slidably inserted into the inner wall of the left annular groove of filter tube 1. The right surface of sealing ring 2 contacts the left surface of filter tube 1. The filter screen 21 is slidably inserted into filter tube 1, fixing it without affecting its disassembly for subsequent cleaning and replacement. Filter screen 21 physically filters solid particles in the test medium through its pore structure, effectively preventing large particles from entering the subsequent detection process, avoiding probe clogging or contamination, and improving measurement accuracy. It is sealed to filter tube 1 through sealing ring 2 to prevent media leakage. Filter tube 1 is connected to the flange interface of the direct-insertion probe through a flange and fastened with bolts. Metal spiral wound gaskets or rubber gaskets need to be installed between the flanges to ensure sealing. The flange size, bore diameter, and bolt hole position of filter tube 1 must be completely matched with the flange interface of the direct-insertion probe. This can be customized according to the probe parameters during manufacturing. The material of filter tube 1 and flange can be 316 stainless steel, which has the advantages of corrosion resistance, high temperature resistance, and high mechanical strength, and is suitable for industrial fluid environments.

[0027] To secure the filter screen 21, a ball rod 3 is slidably inserted into the inner wall of the movable groove of the annular tube of the filter screen 21. A spring 31 is fixedly installed at one end of one ball rod 3, and one end of the spring 31 is fixedly installed at one end of the other ball rod 3. The spring 31 is located in the movable groove of the annular tube of the filter screen 21. By sliding the ball rod 3 into the movable groove of the filter screen 21, it is secured without affecting its extension and retraction. Sliding blocks are provided on both sides of one end of the ball rod 3, and a sliding groove matching the sliding blocks is provided in the movable groove to limit its movement and prevent the ball rod 3 from falling off. The material of the ball rod 3 is the same as... The filter screen 21 is made of 316 stainless steel, which has high strength, corrosion resistance and fatigue resistance. It is suitable for environments with frequent expansion and contraction and stress. The filter screen 21 is fixedly installed with two ball rods 3 by springs 31. After the ball rod 3 on the filter screen 21 is squeezed and contracted by the movable groove, it moves to the limiting groove 4. The spring 31 can reset it and make the ball rod 3 lock in the limiting groove 4, thereby fixing the filter screen 21. The spring 31 can be made of 316 stainless steel spring wire, or piano wire or oil-quenched and tempered steel wire can be selected under special working conditions to ensure elastic stability and fatigue resistance.

[0028] To enable quick disassembly of the filter screen 21, a triangular-shaped limiting groove 4 is provided on the inner wall of the left end of the filter tube 1. The hemisphere of the ball rod 3 is engaged with the inner wall of the limiting groove 4. The limiting groove 4 is provided inside the filter tube 1. The ball rod 3, spring 31, and limiting groove 4 are all arranged in a circular array. The triangular cross-section of the limiting groove 4 has a guiding function, which facilitates the automatic centering and embedding of the ball rod 3 during installation. After engagement, a self-locking structure is formed, which can effectively resist vibration or fluid impact and improve structural reliability. The ball rod 3 is engaged by the limiting groove 4. Applying external force can disengage the ball rod 3 from the limiting groove 4, thereby enabling quick disassembly of the filter screen 21.

[0029] By setting up a filtration mechanism, the test medium entering the filter tube 1 is filtered. The sealing ring 2 and the filter screen 21 are slidably sleeved, which fixes the filter screen 21 without affecting its disassembly. The filter screen 21 uses its pore structure to physically filter solid particles in the test medium, effectively preventing large particles from entering the subsequent detection process. The sealing ring 2 contacts the filter tube 1 to seal it and prevent media leakage. When the ball rod 3 on the filter screen 21 is squeezed and contracted by the movable groove, it moves to the limiting groove 4. The spring 31 can reset it, so that the ball rod 3 is locked in the limiting groove 4, thereby fixing the filter screen 21. By locking the ball rod 3 in the limiting groove 4, external force can be applied to make the ball rod 3 disengage from the limiting groove 4, thereby realizing the rapid disassembly of the filter screen 21. This solves the technical problem in the prior art that the direct insertion probe is directly inserted into the test medium for detection, but the test medium often contains solid particles such as mud, rust, and crystals. These particles will directly enter the probe detection area, adhere to the probe surface or block the flow channel, resulting in a decrease in detection accuracy or even failure.

[0030] In order to magnetically adsorb ferromagnetic metal particles in the test medium, the filter tube 1 is equipped with an adsorption mechanism, which includes a magnetic ring 6 with a sealing ring. The magnetic ring 6 magnetically adsorbs ferromagnetic metal particles in the test medium through the magnetic field gradient it generates.

[0031] To facilitate the removal of the mounting bracket 5 by the staff using the handle, the adsorption mechanism also includes a mounting bracket 5 with a handle. The mounting bracket 5 is fixedly installed in the arc-shaped mounting groove of the filter tube 1 by bolts. The mounting bracket 5 is fixed to the filter tube 1 by bolts, which facilitates disassembly while fixing it. The mounting bracket 5 is also made of 316 stainless steel and has a handle, which makes it easy for the staff to remove the mounting bracket 5.

[0032] To adsorb tiny ferromagnetic particles, the inner wall of the mounting bracket 5 is fixedly installed with a magnetic ring 6 equipped with a sealing ring. The magnetic ring 6 is slidably inserted into the inner wall of the arc-shaped mounting groove of the filter tube 1. The mounting bracket 5 and the magnetic ring 6 are fixedly installed and secured, and the two can be fixed with bolts. The magnetic ring 6 and the sealing ring on it can be fixed with epoxy resin adhesive. The magnetic ring 6 can be a multi-pole magnetic ring 6, which is a ring magnet with multiple N poles and S poles arranged alternately on its surface. It is magnetized by professional magnetization equipment to form multiple magnetic poles on its surface, such as four poles, six poles, or eight poles. The material of the magnetic ring 6 can be neodymium iron boron magnetic ring 6, which has high magnetic energy product and strong magnetic field, suitable for adsorbing tiny ferromagnetic particles. It can also be surface treated, such as nickel plating or epoxy resin coating. The magnetic ring 6 is slidably inserted into the filter tube 1, which fixes it without affecting its disassembly and replacement.

[0033] By setting up an adsorption mechanism, ferromagnetic metal particles in the test medium are magnetically adsorbed. The mounting frame 5 is equipped with a handle, which makes it easy for operators to remove the mounting frame 5. The mounting frame 5 and the magnetic ring 6 can be fixed with bolts. The magnetic ring 6 can be a multi-pole magnetic ring 6, which is a ring magnet with multiple N poles and S poles arranged alternately on its surface. It is magnetized by professional magnetization equipment to form multiple magnetic poles on its surface, such as four poles, six poles, or eight poles. The magnetic ring 6 can be made of neodymium iron boron magnetic ring 6, which has high magnetic energy product and strong magnetic field, and is suitable for adsorbing small ferromagnetic particles. This solves the technical problem in the existing technology that in scenarios with high ferromagnetic metal particle content, such as petrochemical and mining wastewater, small metal particles entering the probe can cause scratches on the probe surface or signal interference, affecting the measurement accuracy.

[0034] Working principle: When installing filter tube 1, the sealing ring 2 is slidably sleeved on the arc surface of the annular tube of filter screen 21. Then, filter screen 21 is slidably inserted into the inner wall of the left annular groove of filter tube 1. The ball rod 3 slidably inserted on filter screen 21 is squeezed by the inner wall of the annular groove and retracts back into the movable groove of filter screen 21, continuing to push filter screen 21 to move. When the ball rod 3 moves to the limiting groove 4, the ball rod 3 automatically gets into the triangular limiting groove 4 of filter tube 1 under the action of spring 31, completing the fixation. At the same time, the right surface of sealing ring 2 is in close contact with the left surface of filter tube 1 to form a seal. Finally, the magnetic ring 6 with sealing ring is slidably inserted into the inner wall of the arc-shaped mounting groove of filter tube 1. The mounting bracket 5 is fixed in the arc-shaped mounting groove of filter tube 1 by bolts. After installation, align the flange of filter tube 1 with the flange interface of the direct insertion probe, and install a metal spiral wound gasket or rubber gasket between the two flanges to ensure sealing. Tighten the flange with bolts to ensure that filter tube 1 and probe are firmly connected. After installation, perform a pressure test to ensure that there is no media leakage. During use, the direct-insertion probe is inserted into the medium to be tested. The medium enters the probe through the filter tube 1. The filter screen 21 first performs physical filtration on the medium to intercept larger particulate impurities. The magnetic ring 6 adsorbs ferromagnetic particles in the medium through a high-gradient magnetic field. The filtered pure medium enters the detection unit inside the probe. The moisture meter measures the moisture content in the medium in real time. The detection data is transmitted to the control system through the probe to realize real-time monitoring and feedback. Regularly observe whether excessive impurities accumulate on the surface of filter screen 21, affecting filtration efficiency. Regularly check whether filter screen 21 is damaged or corroded. Regularly check whether there are too many ferromagnetic particles adsorbed on the surface of magnetic ring 6, and clean them regularly. Regularly check whether the magnetic field strength of magnetic ring 6 has weakened, and replace it if necessary. Regularly check whether sealing ring 2 is aged or cracked to ensure sealing. Regularly check whether the sealing ring of magnetic ring 6 is intact to prevent media leakage. Regularly check whether ball rod 3 is flexible and whether spring 31 has normal elasticity. Regularly ensure whether limit groove 4 is worn to ensure reliable snap-fit. When the filter 21 needs to be replaced, the staff applies external force to disengage the cue stick 3 from the limiting groove 4, removes the filter 21, cleans or replaces the new filter 21, reinstalls the filter 21, and ensures that the cue stick 3 is inserted into the limiting groove 4. When it is necessary to clean or replace the magnetic ring 6, use tools to remove the bolts of the mounting bracket 5, then remove the mounting bracket 5 by the handle, clean the ferromagnetic particles adsorbed on the surface of the magnetic ring 6. If the magnetic field strength is insufficient, replace the magnetic ring 6 and reinstall it. If the device is worn excessively, the entire device may be replaced if necessary. This is normal wear and tear. The electronic devices, their power supply methods, and control methods described in this article are all existing technologies with mature applications. Therefore, they will only be briefly explained here without further elaboration.

[0035] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A pre-sampling device for a moisture meter with filtration function, comprising a filter tube (1) fitted with a flange, characterized in that: A filtration mechanism is provided at one end of the filter tube (1), the filtration mechanism includes a filter screen (21), the filter screen (21) filters the test medium entering the filter tube (1) through its pore structure; The filter tube (1) is equipped with an adsorption mechanism, which includes a magnetic ring (6) with a sealing ring. The magnetic ring (6) magnetically adsorbs ferromagnetic metal particles in the test medium through the magnetic field gradient it generates.

2. The pre-sampling device for a moisture meter with filtration function according to claim 1, characterized in that: The filtration mechanism also includes a sealing ring (2), which is slidably sleeved on the curved surface of the annular tube of the filter screen (21).

3. The pre-sampling device for a moisture meter with filtration function according to claim 2, characterized in that: The filter screen (21) is slidably inserted into the inner wall of the left annular groove of the filter tube (1), and the right side surface of the sealing ring (2) is in contact with the left side surface of the filter tube (1).

4. A pre-sampling device for a moisture meter with filtration function according to claim 3, characterized in that: A ball rod (3) is slidably inserted into the inner wall of the movable groove of the annular tube of the filter screen (21). A spring (31) is fixedly installed at one end of one of the ball rods (3). One end of the spring (31) is fixedly installed with one end of the other ball rod (3). The spring (31) is located in the movable groove of the annular tube of the filter screen (21).

5. A pre-sampling device for a moisture meter with filtration function according to claim 4, characterized in that: The filter tube (1) has a limiting groove (4) with a triangular cross-section on the inner wall of the left end, and the hemisphere of the ball rod (3) is engaged with the inner wall of the limiting groove (4).

6. A pre-sampling device for a moisture meter with filtration function according to claim 1, characterized in that: The adsorption mechanism also includes a mounting bracket (5) with a handle, which is fixedly installed in the arc-shaped mounting groove of the filter tube (1) by bolts.

7. A pre-sampling device for a moisture meter with filtration function according to claim 6, characterized in that: The inner wall of the mounting bracket (5) is fixedly installed with the magnetic ring (6) with a sealing ring, and the magnetic ring (6) is slidably inserted into the inner wall of the arc-shaped mounting groove of the filter tube (1).

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