Viscosity detection device for epoxy curing agent

Abstract

The invention belongs to the technical field of epoxy curing agent detection, and discloses an epoxy curing agent viscosity detection device which comprises a rotary viscometer body, a detection head is fixedly mounted at the bottom of the rotary viscometer body, and a sample box is arranged at the bottom of the rotary viscometer body. The multi-temperature-point in-situ continuous detection function of the epoxy curing agent is achieved through the independent temperature control detection assembly, the independent shell is matched with the first heating wire and the temperature sensor to form the independent temperature control unit, and accurate temperature control detection of different temperature points can be directly conducted on the same sample in the sample box; temperature fluctuation errors caused by multiple times of sampling and sample transfer in a traditional method are avoided, and the scientific comparability and the detection precision of multi-temperature-point data are remarkably improved; the sliding liquid inlet sealing element and the one-way liquid inlet sealing element ensure that the sample in the independent shell can be independently heated to the set temperature for detection, the temperature state of the main sample box is not influenced, and the detection independence and accuracy are further ensured.

Description

Technical Field

[0001] This invention relates to the field of epoxy curing agent testing equipment technology, specifically an epoxy curing agent viscosity testing device. Background Technology

[0002] Currently, epoxy curing agents are key components of epoxy resin systems, and their viscosity directly affects the mixing process, application performance, and the quality of the final cured product. In new material applications such as composite materials, electronic packaging, coatings, and adhesives, the viscosity of epoxy curing agents is a core parameter that determines the uniformity of mixing with resin, wettability, workability, and final mechanical properties. Accurate and rapid testing of the flow characteristics of this material is of vital importance for metrological control, product quality standardization, process optimization, and new product development in new material testing.

[0003] Current methods for testing the viscosity of epoxy curing agents mainly rely on rotational viscometers or rheometers, using offline sampling. Chinese patent CN217277642U discloses a device for testing the rheological properties of epoxy curing agents, including a base plate, a support plate, a test box, a clamping plate, a discharge valve, a top plate, a testing mechanism, and a cleaning mechanism. By setting up the testing mechanism, the device can move the rheological testing head to any position within the test box, thereby enabling comprehensive testing of the rheological properties of the epoxy curing agent within the test box, expanding the testing range of epoxy curing agent rheology, and thus improving the accuracy of the test results.

[0004] The aforementioned device can only perform measurements at a single temperature point at a time. When it is necessary to obtain viscosity data at multiple temperature points, repeated operations such as multiple sampling and repacking are required. Since the viscosity of epoxy curing agents is highly sensitive to temperature, temperature changes inevitably occur during the same sample transfer process, introducing systematic errors and rendering the test data at different temperature points unworthy of scientific comparison. Secondly, in the subsequent cleaning process, the device uses a mechanical brushing method. For epoxy curing agents with specific viscosity characteristics, this contact-type physical brushing not only has limited cleaning effect, but the high viscosity curing agent is also prone to adhering to the brush bristles, which increases the cleaning difficulty. Summary of the Invention

[0005] To address the above problems, the present invention provides the following technical solution: To address the problems mentioned in the background art, the present invention provides an epoxy curing agent viscosity testing device, comprising a rotary viscometer body, a detection head fixedly mounted on the bottom of the rotary viscometer body, a sample box disposed on the bottom of the rotary viscometer body, and a support frame fixedly mounted on the bottom of the rotary viscometer body, and further comprising: An independent temperature control and detection component is located at the bottom of the rotary viscometer body and is used to detect the epoxy curing agent in the sample at separate temperature points, independent of the detection head. The independent temperature control and detection component includes an independent shell, which is located at the bottom of the rotary viscometer body. An independent storage slot is provided inside the independent shell, and a heating wire is arranged around the independent storage slot. A temperature sensor is fixedly installed on the independent shell to detect the temperature of the epoxy curing agent inside the independent shell in real time. A sliding liquid inlet seal is slidably connected to the outside of the independent shell to seal the bottom of the independent shell. A sealing and cleaning assembly is installed at the bottom of the rotary viscometer body and is used to clean the test head and the inner wall of the independent shell after testing. The sealing and cleaning assembly includes a mounting box, which is fixedly installed at the bottom of the rotary viscometer body.

[0006] Preferably, the sliding liquid inlet seal includes a sliding plate, which is slidably connected to the outside of the independent shell. A sealing plate is fixedly connected to the bottom of the sliding plate, and a metal slider is fixedly connected to the inner side of the sliding plate. The independent shell has a sliding opening, and the metal slider is slidably connected to the inside of the sliding opening. A strong magnetic ring is fixedly connected to the independent shell. The sealing plate seals the liquid entering the independent shell through the one-way liquid inlet seal, so that it can be independently temperature controlled and detected.

[0007] Preferably, the one-way liquid inlet seal includes a liquid inlet, which is opened on a sealing plate. A sealing sheet is provided inside the liquid inlet. A fixing block is fixedly connected to the sealing sheet. A fixing rod is fixedly connected to the sealing sheet. The fixing rod is rotatably connected inside the fixing block. A torsion spring is fixedly connected to the fixing rod. The other end of the torsion spring is fixedly connected to the inner wall of the fixing block.

[0008] Preferably, a sealing head is fixedly connected to the surface of the fixing rod, and the sealing head is inserted into the interior of the fixing block.

[0009] Preferably, the sealed cleaning assembly includes a water box, which is fixedly mounted on a support frame. A miniature plunger pump is connected to the water box, and the output end of the miniature plunger pump is connected to the mounting box via a hose. A spray ring is fixedly connected to the bottom of the mounting box, and an independent shell is threaded to the outside of the spray ring. A spray nozzle is provided at the bottom of the spray ring, and the mounting box collects the wastewater during cleaning through an external seal.

[0010] Preferably, the outer sealing element includes an outer collecting sleeve, which is threadedly connected to the mounting box, and the bottom of the mounting box has an external flushing port.

[0011] Preferably, a second heating wire is installed inside the water tank for selectively heating the cleaning solution inside the water tank. The temperature of both the first heating wire and the second heating wire is controlled by a thermostat.

[0012] Preferably, a protective sleeve is fixedly installed on the outside of the independent shell, and the protective sleeve is located outside the independent storage slot.

[0013] Preferably, the bottom of the sample box is controlled by a position adjustment component to raise the sample box to the standard height for detection by the detection head. The position adjustment component includes a base plate, an adjustment plate is fixedly connected to the base plate, the adjustment plate is inserted into a support frame, a limit plate is fixedly connected to the support frame, a locking block is slidably connected to the limit plate, a clamping spring is fixedly connected to the locking block, the clamping spring is connected to the limit plate, and the locking block engages and limits the adjustment plate through a locking slot of the same shape.

[0014] Preferably, the bottom of the card block is sloping, which allows the adjustment plate to move upwards during adjustment without descending on its own, thus stabilizing the working height of the base plate.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: This invention achieves in-situ continuous detection of epoxy curing agents at multiple temperature points through an independent temperature control and detection component. The independent shell, together with the heating wire and temperature sensor, constitutes an independent temperature control unit, which can directly perform precise temperature control and detection of the same sample at different temperature points within the sample box. This avoids temperature fluctuation errors caused by multiple sampling and sample transfer in traditional methods, significantly improving the scientific comparability and detection accuracy of multi-temperature point data. The sliding liquid inlet seal and the one-way liquid inlet seal ensure that the sample in the independent shell can be independently heated to the set temperature for detection without affecting the temperature state of the main sample box, further guaranteeing the independence and accuracy of the detection. Based on the independent temperature control and detection component that enables accurate detection at multiple temperature points, the sealed cleaning component provides high-pressure delivery through a micro plunger pump. This, combined with the spray ring and nozzle, forms a high-pressure spray that efficiently flushes and cleans the detection head and the inner wall of the independent housing. The heating wire in the water tank can heat the cleaning solution, further enhancing the cleaning effect. The outer collection sleeve on the mounting box forms a closed cleaning space, allowing the independent housing to be covered for independent cleaning. This effectively collects cleaning waste liquid, preventing solvent splashing and environmental pollution. It also facilitates disassembly and maintenance, solving the problem of difficult-to-clean residue of high-viscosity epoxy curing agent, and improving cleaning efficiency and equipment maintenance convenience. The position adjustment component, through the cooperation of the adjustment plate, limit plate, locking block, and clamping spring, achieves precise adjustment of the sample box height. The inclined surface design at the bottom of the locking block ensures that the adjustment plate can only move upward and will not descend on its own, thus ensuring the stability and repeatability of the sample box height during the detection process. This keeps the immersion depth of the detection head at a standard height, improves the repeatability and reliability of the detection results, and avoids measurement errors caused by inconsistent immersion depths. Attached Figure Description

[0016] Figure 1 This is a three-dimensional schematic diagram of the present invention; Figure 2 This is a three-dimensional cross-sectional schematic diagram of the independent temperature control and detection component of the present invention; Figure 3 This is a three-dimensional cross-sectional view of the mounting box of the present invention; Figure 4 This is a three-dimensional cross-sectional schematic diagram of the position adjustment component of the present invention; Figure 5 This is an exploded three-dimensional schematic diagram of the one-way liquid inlet seal of the present invention; Figure 6 This is an exploded three-dimensional schematic diagram of the mounting box and spray ring of the present invention; Figure 7 This is a three-dimensional schematic diagram of the position adjustment component of the present invention.

[0017] In the diagram: 1. Rotary viscometer body; 2. Detection head; 3. Sample box; 4. Support frame; 5. Independent temperature control and detection component; 51. Independent shell; 52. Independent storage slot; 53. Heating wire one; 54. Temperature sensor; 55. Sliding liquid inlet seal; 551. Sliding plate; 552. Sealing plate; 553. Metal slider; 554. Sliding port; 555. Strong magnetic ring; 556. One-way liquid inlet seal; 5561. Liquid inlet; 5562. Sealing plate; 556 3. Fixing block; 5564. Fixing rod; 5565. Torsion spring; 6. Sealing and cleaning assembly; 61. Mounting box; 62. Water box; 63. Miniature plunger pump; 64. Spray ring; 65. Spray nozzle; 66. External seal; 661. External collection sleeve; 662. External flushing port; 7. Sealing head; 8. Heating wire II; 9. Protective sleeve; 10. Position adjustment assembly; 101. Base plate; 102. Adjusting plate; 103. Limiting plate; 104. Locking block; 105. Clamping spring. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] like Figures 1 to 7 As shown, the present invention provides a viscosity testing device for epoxy curing agents, including a rotary viscometer body 1, a testing head 2 fixedly mounted on the bottom of the rotary viscometer body 1, and a sample box 3 disposed on the bottom of the rotary viscometer body 1. The device is characterized in that a support frame 4 is fixedly mounted on the bottom of the rotary viscometer body 1, and further includes... Independent temperature control and detection component 5 is set at the bottom of the rotary viscometer body 1 and is used to detect the epoxy curing agent in the sample at separate temperature points, independent of the detection head 2. The independent temperature control and detection component 5 includes an independent shell 51, which is located at the bottom of the rotary viscometer body 1. An independent storage slot 52 is provided inside the independent shell 51, and a heating wire 53 is arranged around the independent storage slot 52. A temperature sensor 54 is fixedly installed on the independent shell 51 for real-time detection of the temperature of the epoxy curing agent inside the independent shell 51. A sliding liquid inlet seal 55 is slidably connected to the outside of the independent shell 51 for sealing the bottom of the independent shell 51. The sealing and cleaning assembly 6 is located at the bottom of the rotary viscometer body 1 and is used to clean the detection head 2 and the inner wall of the independent shell 51 after testing. The sealing and cleaning assembly 6 includes a mounting box 61, which is fixedly installed at the bottom of the rotary viscometer body 1.

[0020] Specifically, the rotary viscometer body 1 is a readily available and mature rotary viscometer body, including standard components such as a drive motor, torque sensor, and display control unit. The detection head 2 is the standard rotor of the rotary viscometer, which rotates in the sample via a motor drive and measures the torque to calculate the viscosity value. To achieve in-situ detection of the same sample at different temperature points, the independent shell 51 is partially immersed in the sample box 3, with an appropriate gap between its outer wall and the inner wall of the sample box 3 to ensure smooth sample flow. When the independent shell 51 is immersed in the epoxy curing agent in the sample box 3, the sliding liquid inlet seal 55 allows the sample to autonomously enter the independent shell 51. After entering, it quickly achieves sealing and isolation, physically separating the sample in the independent receiving slot 52 from the main sample in the sample box 3. Subsequently, the sample in the independent shell 51 is individually temperature-controlled by the heating wire 53, which does not affect the temperature of the main sample and enables in-situ detection of the same sample at different temperature points, avoiding temperature fluctuations and compositional deviations caused by traditional multiple sampling. The support frame 4 serves as the structural foundation and load-bearing skeleton of the entire auxiliary system, ensuring the equipment's stability. The overall structural stability and rigidity during operation are ensured by the independent shell 51, which is the core functional unit for in-situ detection at multiple temperature points. Its internal independent storage slot 52, along with the surrounding heating wire 53, forms an independent area isolated from the main sample box 3 environment. This area allows for rapid and precise heating and constant temperature control independent of the ambient temperature, providing the physical conditions for continuous detection of the same sample at different temperature points. The temperature sensor 54 directly monitors the real-time temperature of the sample inside the independent shell 51 and feeds the signal back to the control system, ensuring the controllability and accuracy of the detection temperature. Two rotary viscometer bodies 1 are fixedly installed on the support frame 4. Each rotary viscometer body 1 has an independent temperature control detection component 5 at its bottom. The two independent temperature control detection components 5 can independently control the temperature to different set temperatures. Through two detection heads 2, the viscosity of the epoxy curing agent in the same sample box 3 at different temperature points is simultaneously detected, achieving synchronous in-situ measurement at multiple temperature points, further improving detection efficiency and avoiding the influence of temperature changes on the sample state.

[0021] like Figures 2 to 4 As shown, the sliding liquid inlet seal 55 includes a sliding piece 551, which is slidably connected to the outside of the independent shell 51. A sealing plate 552 is fixedly connected to the bottom of the sliding piece 551, and a metal slider 553 is fixedly connected to the inner side of the sliding piece 551. A sliding opening 554 is provided on the independent shell 51, and the metal slider 553 is slidably connected to the inside of the sliding opening 554. A strong magnetic ring 555 is fixedly connected to the independent shell 51. The sealing plate 552 seals the liquid entering the independent shell 51 through a one-way liquid inlet seal 556, so that it can be independently temperature controlled and detected.

[0022] Specifically, the sealing plate 552 is initially out of contact with the bottom of the independent shell 51. When the sample box 3 rises, the sample liquid surface contacts the bottom of the independent shell 51. Under the action of hydraulic pressure, the sealing plate 552 is pushed upward, causing the sliding piece 551 to slide upward along the outer wall of the independent shell 51. The metal slider 553 moves synchronously in the sliding port 554. At the same time, the sample enters the independent shell 51 through the liquid inlet 5561 and the gap between the sealing plate 552 and the bottom of the independent shell 51. When the epoxy curing agent enters, the metal slider 553 is also pushed by the hydraulic pressure and magnetically attracted by the strong magnetic ring 555. This allows the sealing plate 552 to drive the one-way liquid inlet seal 556 to independently store a portion of the epoxy curing agent in the sample box 3 in the independent shell 51. The main function of magnetic attraction is to maintain the stability of the sealing state and ensure that the internal sample is completely isolated from the external environment during the independent temperature control detection process.

[0023] like Figures 2 to 5 As shown, the one-way liquid inlet seal 556 includes a liquid inlet 5561, which is opened on the sealing plate 552. A sealing sheet 5562 is provided inside the liquid inlet 5561. A fixing block 5563 is fixedly connected to the sealing sheet 5562. A fixing rod 5564 is fixedly connected to the sealing sheet 5562. The fixing rod 5564 is rotatably connected to the inside of the fixing block 5563. A torsion spring 5565 is fixedly connected to the fixing rod 5564. The other end of the torsion spring 5565 is fixedly connected to the inner wall of the fixing block 5563.

[0024] Specifically, when sample box 3 rises and liquid pressure acts on sealing plate 5562, sealing plate 5562 experiences upward pressure, causing fixing rod 5564 to rotate upward against the torque of torsion spring 5565. Liquid inlet 5561 opens, allowing the sample to enter the independent shell 51. When liquid inlet is complete or liquid pressure disappears, the restoring force of torsion spring 5565 and the weight of epoxy curing agent cause fixing rod 5564 to rotate sealing plate 5562 downward to reset. Sealing plate 5562 tightly adheres to liquid inlet 5561, forming a one-way seal to prevent sample backflow within independent shell 51. The unidirectional structure of 5565 and sealing sheet 5562 ensures that the sample can only enter the independent shell 51 from the sample box 3 and cannot flow in the opposite direction without human intervention, thus ensuring the independence of the sample inside the independent shell 51. At the same time, this unidirectional sealing structure can effectively prevent the sample from expanding or convection due to the temperature rise when the independent shell 51 is heated for detection, avoiding mixing with external samples and ensuring the accuracy of multi-temperature point detection. The rotating connection design of the fixing rod 5564 and the fixing block 5563 not only ensures the flexible opening and closing of the sealing sheet 5562, but also provides a reliable sealing force through the torsion spring 5565.

[0025] like Figures 2 to 5 As shown, a sealing head 7 is fixedly connected to the surface of the fixing rod 5564, and the sealing head 7 is inserted into the interior of the fixing block 5563.

[0026] Specifically, the sealing head 7 is made of elastic sealing material and tightly wraps the rotating shaft part of the fixing rod 5564 to form a dynamic sealing structure. When the fixing rod 5564 rotates, the sealing head 7 rotates accordingly but always maintains a sealed contact with the inner wall of the fixing block 5563. This effectively prevents sample liquids such as epoxy curing agent from seeping into the interior of the fixing block 5563 and avoids liquid contact with the torsion spring 5565, which could lead to corrosion, jamming, or failure of the torsion spring 5565. This ensures the long-term reliability and service life of the one-way liquid inlet seal 556.

[0027] like Figures 2 to 5 As shown, the sealed cleaning assembly 6 includes a water box 62, which is fixedly mounted on the support frame 4. A miniature plunger pump 63 is connected to the water box 62. The output end of the miniature plunger pump 63 is connected to the mounting box 61 through a hose. A spray ring 64 is fixedly connected to the bottom of the mounting box 61. An independent shell 51 is threaded to the outside of the spray ring 64. A spray nozzle 65 is opened at the bottom of the spray ring 64. The mounting box 61 collects the wastewater during cleaning through the outer seal 66.

[0028] Specifically, during cleaning, the miniature plunger pump 63 is activated, pumping the cleaning solution (water or organic solvent) from the water tank 62 through a hose to the mounting box 61. The cleaning solution is then sprayed at high pressure through the nozzle 65 at the bottom of the spray ring 64, flushing and cleaning the inner wall of the independent housing 51 and the detection head 2. Simultaneously, the independent housing 51 is threaded to the outside of the spray ring 64, forming a relatively sealed cleaning space. This achieves efficient, non-contact cleaning of the inner wall of the independent housing 51 and the detection head 2, avoiding secondary contamination and wear problems caused by mechanical brushing. The threaded connection structure facilitates the cleaning of the independent housing 51. The installation and disassembly of 1 ensures sealing during cleaning, preventing splashing of cleaning fluid and solving the problem of difficult cleaning of high-viscosity epoxy curing agent residue. The miniature plunger pump 63 is preferably a miniature high-pressure model with an outlet pressure of not less than 0.5MPa. Its flow-through components are made of materials resistant to organic solvent corrosion, such as 316 stainless steel or PTFE, to ensure long-term reliability. The spray ring 64 has multiple spray nozzles 65 at the bottom, which are evenly distributed circumferentially to ensure that the high-pressure cleaning fluid can form a uniform and dead-angle-free flushing coverage on the inner wall of the independent shell 51 and the detection head 2.

[0029] like Figures 2 to 5 As shown, the outer seal 66 includes an outer collection sleeve 661, which is threadedly connected to the mounting box 61. The bottom of the mounting box 61 has an outer flushing port 662.

[0030] Specifically, during cleaning, the outer collection sleeve 661 is threadedly connected to the mounting box 61, covering the independent shell 51 to form a closed cleaning space; the outer flushing port 662 can flush and clean the epoxy curing agent adhering to the outer wall of the independent shell 51, and the cleaning waste liquid is confined inside the outer collection sleeve 661, thereby realizing independent cleaning of the outer wall of the independent shell 51, while effectively collecting the cleaning waste liquid and preventing solvent splashing from polluting the environment and operators; the design of the outer flushing port 662 can specifically clean the adhesive on the outer wall of the independent shell 51, improving the comprehensiveness of cleaning.

[0031] like Figures 2 to 5 As shown, a heating wire 2 8 is installed inside the water tank 62 for selectively heating the cleaning solution inside the water tank 62. Both the heating wire 1 53 and the heating wire 2 8 are controlled by a thermostat.

[0032] Specifically, heating wire 28 can reduce the viscosity of the cleaning fluid, improve its fluidity and solubility by heating the cleaning fluid, such as water or a specific solvent, thereby enhancing the cleaning effect on high-viscosity epoxy curing agents. The temperature controller can be an existing mature PID temperature controller, which can accurately control the heating power of heating wire 1 53 and heating wire 2 8 through the feedback signal of temperature sensor 54, so that the sample temperature or cleaning fluid temperature in the independent shell 51 is stable at the set value. The temperature controller is an existing mature product.

[0033] like Figures 2 to 5 As shown, a protective sleeve 9 is fixedly installed on the outside of the independent shell 51, and the protective sleeve 9 is located outside the independent storage slot 52.

[0034] Specifically, the protective sleeve 9 can protect the heating wire 53 inside the independent shell 51, preventing the epoxy curing agent during testing from seeping into the independent storage slot 52. An air insulation layer can be formed between the protective sleeve 9 and the outer wall of the independent shell 51, which not only provides protection but also effectively reduces the loss of heat from the independent storage slot 52 to the external sample box 3, thereby improving heating efficiency and reducing energy consumption.

[0035] like Figures 1 to 7 As shown, the bottom of the sample box 3 is controlled by the position adjustment component 10 to rise and send the sample to the standard height for detection of the detection head 2. The position adjustment component 10 includes a base plate 101, an adjustment plate 102 is fixedly connected to the base plate 101, the adjustment plate 102 is inserted into the support frame 4, a limit plate 103 is fixedly connected to the support frame 4, a locking block 104 is slidably connected to the limit plate 103, a clamping spring 105 is fixedly connected to the locking block 104, the clamping spring 105 is connected to the limit plate 103, and the locking block 104 clamps and limits the adjustment plate 102 through a bayonet of the same shape.

[0036] Specifically, when the height of the sample box 3 needs to be adjusted, the position adjustment component 10 pushes the base plate 101 upward, and the adjustment plate 102 slides upward within the support frame 4. When the latch on the adjustment plate 102 aligns with the latch block 104, the latch block 104 engages with the latch under the action of the clamping spring 105, achieving a limiting and fixed position. When it is necessary to lower the plate, the latch block 104 needs to be manually pulled outward to disengage it from the latch. Then the adjustment plate 102 can move downward. The limiting plate 103 guides and limits the sliding of the latch block 104, and the clamping spring 105 provides a continuous clamping force to ensure that the latch block 104 is reliably engaged with the latch. 04 An external limiting ring is provided. The bottom of this limiting ring is fixedly connected to the support frame 4, which can limit the movement of the locking block 104 and prevent the locking block 104 from accidentally falling off the limiting plate 103. Through the cooperation of the locking block 104 and the bayonet, the height of the sample box 3 can be precisely adjusted in multiple positions, which can ensure that the depth of the detection head 2 immersed in the sample meets the standard requirements and avoid measurement errors caused by inconsistent immersion depth. The inclined surface design at the bottom of the locking block 104 makes the adjustment plate 102 only adjustable upward in one direction, preventing the sample box 3 from accidentally falling due to gravity or vibration during the detection process, and ensuring the stability and repeatability of the detection height.

[0037] like Figure 4 As shown, the bottom of the card block 104 is sloping, which allows the adjusting plate 102 to move upwards during adjustment without descending on its own, thus stabilizing the working height of the base plate 101.

[0038] Specifically, when the adjusting plate 102 moves upward, the latch on the edge of the adjusting plate 102 slides along the inclined surface of the latch block 104, which can easily push the latch block 104 outward, allowing the adjusting plate 102 to move upward smoothly. When the latch on the adjusting plate 102 moves upward one notch, the latch block 104 is engaged in the latch on each adjusting plate 102 under the action of the clamping spring 105. At this time, since the straight surface on the top of the latch block 104 and the straight surface on the inner wall of the latch form a self-locking structure, when the adjusting plate 102 is subjected to a downward force, the latch block 104 will be pressed more tightly against the latch, generating a self-locking effect and preventing the adjusting plate 102 from falling down on its own. The one-way self-locking structure is simple and reliable, ensuring both the convenience of adjustment and the stability of the height of use. It is the key structure for the position adjusting component 10 to achieve reliable limiting.

[0039] The working process of the technical solution provided by this invention is as follows: In use, the operator places the sample box 3 containing epoxy curing agent on the base plate 101. By pushing the base plate 101 upwards, the adjusting plate 102 slides within the support frame 4. The locking block 104, under the action of the clamping spring 105, engages with the slot on the adjusting plate 102, and the height is locked using the inclined self-locking structure, precisely raising the sample box 3 to the working position. This ensures that the detection head 2 has a standard and repeatable immersion depth. At this time, the independent shell 51 is partially immersed in the sample box 3, with an appropriate gap between its outer wall and the inner wall of the sample box 3 to ensure smooth fluid flow. Subsequently, the sample box 3 continues to rise, and the epoxy curing process continues. When the liquid surface contacts the bottom of the independent shell 51, the hydraulic pressure first acts on the sealing plate 552, pushing the sealing plate 552 to move the sliding plate 551 upward. At the same time, the hydraulic pressure acts on the sealing plate 5562, causing it to overcome the torque of the torsion spring 5565 and rotate upward to open the liquid inlet 5561. The sample then flows into the independent shell 51 through the liquid inlet 5561 and the gap. When the sample volume reaches the target, the sample box 3 descends, and the metal slider 553 is fixed by the magnetic attraction of the strong magnetic ring 555, causing the sealing plate 552 to tightly fit against the bottom of the independent shell 51 to achieve the main seal. At the same time, the restoring force of the torsion spring 5565 drives the sealing plate to... The sealing plate 5562 resets and closes the liquid inlet 5561 to form a one-way seal. After the detection is started, the heating wire 53 starts under the control of the PID temperature controller to precisely heat the sample isolated in the independent shell 51. The temperature sensor 54 monitors and feeds back data in real time to form a closed-loop high-precision temperature control. After the temperature stabilizes, the drive motor of the rotary viscometer body 1 first drives the detection head 2 to detect the viscosity of the sample in the main sample box 3 at ambient temperature and record the data. The detection head 2 completes the viscosity measurement of the high-temperature sample in the independent shell 51, realizing in-situ multi-temperature measurement of the same sample in the same sample loading. Continuous testing; after testing, the outer collection sleeve 661 is connected to the mounting box 61 by threads to form a closed cleaning space. The micro plunger pump 63 is started to pump the cleaning fluid heated by the heating wire 8 in the water box 62 to the mounting box 61. High-pressure spray is formed through the bottom spray nozzle 65 of the spray ring 64 to thoroughly rinse the inner wall of the detection head 2 and the independent shell 51. The outer flushing port 662 cleans the outer wall of the independent shell 51 at the same time. All cleaning waste liquid is collected by the outer collection sleeve 661, realizing efficient and comprehensive non-contact automated cleaning. After cleaning, the waste liquid can be disposed of by disassembling the outer collection sleeve 661, making operation and maintenance convenient.

[0040] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0041] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A viscosity testing device for epoxy curing agents, comprising a rotary viscometer body (1), wherein a testing head (2) is fixedly mounted on the bottom of the rotary viscometer body (1), and a sample box (3) is provided on the bottom of the rotary viscometer body (1), characterized in that, The bottom of the rotary viscometer body (1) is fixedly equipped with a support frame (4), and also includes: Independent temperature control detection component (5), which is set at the bottom of the rotary viscometer body (1), is used to detect the epoxy curing agent in the sample at different temperatures and points, independently of the detection head (2); The independent temperature control and detection component (5) includes an independent shell (51), which is located at the bottom of the rotary viscometer body (1). An independent storage slot (52) is provided inside the independent shell (51), and a heating wire (53) is arranged around the independent storage slot (52). A temperature sensor (54) is fixedly installed on the independent shell (51) for real-time detection of the temperature of the epoxy curing agent inside the independent shell (51). A sliding liquid inlet seal (55) is slidably connected to the outside of the independent shell (51) for sealing the bottom of the independent shell (51). A sealing cleaning assembly (6) is provided at the bottom of the rotary viscometer body (1) and is used to clean the detection head (2) and the inner wall of the independent shell (51) after detection. The sealing and cleaning assembly (6) includes a mounting box (61), which is fixedly installed at the bottom of the rotary viscometer body (1).

2. The epoxy curing agent viscosity testing device according to claim 1, characterized in that: The sliding liquid inlet seal (55) includes a sliding plate (551), which is slidably connected to the outside of the independent shell (51). A sealing plate (552) is fixedly connected to the bottom of the sliding plate (551). A metal slider (553) is fixedly connected to the inner side of the sliding plate (551). A sliding opening (554) is provided on the independent shell (51). The metal slider (553) is slidably connected to the inside of the sliding opening (554). A strong magnetic ring (555) is fixedly connected to the independent shell (51). The sealing plate (552) seals the liquid entering the independent shell (51) through a one-way liquid inlet seal (556), so that it can be independently temperature controlled and detected.

3. The epoxy curing agent viscosity testing device according to claim 2, characterized in that: The one-way liquid inlet seal (556) includes a liquid inlet (5561), which is located on a sealing plate (552). A sealing plate (5562) is provided inside the liquid inlet (5561). A fixing block (5563) is fixedly connected to the sealing plate (5562). A fixing rod (5564) is fixedly connected to the sealing plate (5562). The fixing rod (5564) is rotatably connected to the inside of the fixing block (5563). A torsion spring (5565) is fixedly connected to the fixing rod (5564). The other end of the torsion spring (5565) is fixedly connected to the inner wall of the fixing block (5563).

4. The epoxy curing agent viscosity testing device according to claim 3, characterized in that: A sealing head (7) is fixedly connected to the surface of the fixing rod (5564), and the sealing head (7) is inserted into the interior of the fixing block (5563).

5. The epoxy curing agent viscosity testing device according to claim 1, characterized in that: The sealed cleaning assembly (6) includes a water box (62), which is fixedly installed on the support frame (4). A miniature plunger pump (63) is connected to the water box (62). The output end of the miniature plunger pump (63) is connected to the mounting box (61) through a hose. A spray ring (64) is fixedly connected to the bottom of the mounting box (61). The independent shell (51) is threaded to the outside of the spray ring (64). A spray nozzle (65) is opened at the bottom of the spray ring (64). The mounting box (61) collects the wastewater during cleaning through an external seal (66).

6. The epoxy curing agent viscosity testing device according to claim 5, characterized in that: The outer sealing element (66) includes an outer collection sleeve (661), which is threaded onto the mounting box (61), and the bottom of the mounting box (61) is provided with an outer flushing port (662).

7. The epoxy curing agent viscosity testing device according to claim 5, characterized in that: The water box (62) is equipped with a second heating wire (8) for selectively heating the cleaning solution inside the water box (62). The temperature of both the first heating wire (53) and the second heating wire (8) is controlled by a thermostat.

8. The epoxy curing agent viscosity testing device according to claim 1, characterized in that: A protective sleeve (9) is fixedly installed on the outside of the independent shell (51), and the protective sleeve (9) is located outside the independent storage slot (52).

9. The epoxy curing agent viscosity testing device according to claim 1, characterized in that: The bottom of the sample box (3) is controlled by the position adjustment component (10) to raise the sample box (3) to the standard height for the detection head (2) during detection. The position adjustment component (10) includes a base plate (101), an adjustment plate (102) is fixedly connected to the base plate (101), the adjustment plate (102) is inserted into the support frame (4), a limit plate (103) is fixedly connected to the support frame (4), a locking block (104) is slidably connected to the limit plate (103), a clamping spring (105) is fixedly connected to the locking block (104), the clamping spring (105) is connected to the limit plate (103), and the locking block (104) clamps and limits the adjustment plate (102) through a bayonet of the same shape.

10. The epoxy curing agent viscosity testing device according to claim 9, characterized in that: The bottom of the card block (104) is sloping, which allows the adjustment plate (102) to move upwards during adjustment without descending on its own, thus stabilizing the working height of the base plate (101).

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