Online filtration sampling device for heat conducting oil circulation system

Abstract

The application discloses an online filtering and sampling device of a heat conducting oil circulating system and relates to the technical field of heat conducting oil sampling.The device comprises an oil guide pipe, a filter seat fixedly connected to the outer wall of the oil guide pipe, a top cover installed at the top end of the filter seat, a pressing rod fixedly connected to the bottom end of the top cover, a partition plate, a filter cartridge, a sampling mechanism and a mounting mechanism.The sampling mechanism is arranged to automatically and separately sample the oil paths on both sides of the filter seat (i.e., before and after filtering) when the heat conducting oil circulating system is normally operating.The first motor drives the pressing plate to move downward, the vertical rod drives the movable plate to move, the oil path on the side is cut off, the circular groove is connected with the sampling pipe, the oil sample at the position is accurately discharged, the whole process does not need to be stopped or manually intervened, the sampling efficiency and operation safety are greatly improved, and reliable samples are provided for real-time evaluation of the filtering effect.

Description

Technical Field

[0001] This invention relates to the field of heat transfer oil sampling technology, specifically to an online filtration and sampling device for heat transfer oil circulation systems. Background Technology

[0002] Thermal transfer oil, also known as heat transfer fluid, is a special industrial oil belonging to the category of organic heat carriers. It achieves indirect heat transfer through liquid or gas phase circulation, and features uniform heating, good thermal stability, and low vapor pressure high-temperature operation. It is widely used in various industrial fields such as rubber and plastics processing, fine chemicals, chemical fiber production, and energy recovery. In recent years, with the improvement of industrial temperature control precision and the expansion of application scenarios, the requirements for thermal efficiency, safety, and operational stability of thermal transfer oil systems have been increasing.

[0003] During the long-term operation of a heat transfer oil circulation system, impurities such as solid particles, colloids, and carbides are generated in the oil due to oxidation, thermal decomposition, and other factors. If these impurities are not removed in time, they will deposit in pipes, heating equipment, and heat exchange surfaces, leading to decreased heat transfer efficiency, localized overheating, increased system pressure drop, and even pipe blockage, equipment damage, and safety accidents, seriously affecting the reliability and economy of system operation. Therefore, continuous and efficient online filtration of heat transfer oil is a key step in ensuring the long-term stable operation of the system.

[0004] Currently, most heat transfer oil systems have filters installed inside the pipeline or use bypass filtration, which generally have the following problems: First, the filtration effect is difficult to monitor in real time, making it impossible to intuitively assess the actual filtration performance of different filter media; second, sampling is inconvenient, especially since it is difficult to accurately and separately sample oil before and after filtration without shutting down the system, making it impossible to analyze filtration efficiency and filter element condition by comparing oil sample impurities; third, replacing the filter element often requires shutting down the system or manually cutting off the oil circuit, which is cumbersome and prone to causing oil leakage or system interruption, affecting production efficiency and operational safety.

[0005] Therefore, there is an urgent need for an online filtration sampling device that can achieve real-time monitoring of filtration status, convenient sampling of oil before and after the heat transfer oil circulation system during normal operation, and safe and rapid replacement of filter elements, in order to meet the needs of modern industrial processes for refined and automated maintenance of heat transfer oil systems. This invention is designed based on the above practical needs, aiming to provide a rationally structured, intelligently operated, safe, and efficient online filtration sampling solution for heat transfer oil. Summary of the Invention

[0006] The purpose of this invention is to provide an online filtration sampling device for a heat transfer oil circulation system, so as to facilitate sampling of the positions before and after heat transfer oil filtration.

[0007] To achieve the above objectives, the present invention provides the following technical solution: an online filtration and sampling device for a heat transfer oil circulation system, comprising an oil guide pipe, a filter seat fixedly connected to the outer wall of the oil guide pipe, a top cover installed at the top of the filter seat, a pressure rod fixedly connected to the bottom of the top cover, a partition slidably connected to the inner wall of the filter seat, a filter cylinder fixedly connected to the bottom of the partition, the bottom of the pressure rod contacting the bottom of the inner wall of the filter cylinder, heat transfer oil being sampled by a sampling mechanism, the top cover being installed on the filter seat by an installation mechanism, the sampling mechanism comprising a sampling seat, the sampling seat being fixedly connected to the outer wall of the oil guide pipe and located on both sides of the filter seat, a movable plate slidably connected to the inner wall of the sampling seat, a circular groove being formed on the outer wall of the movable plate, a vertical rod being fixedly connected to the top of the movable plate, the vertical rod extending above the sampling seat, a connecting groove being formed at the top of the vertical rod, and a fixing groove being formed on the inner wall of the connecting groove.

[0008] As a further embodiment of the present invention: the sampling mechanism further includes a displacement seat, which is disposed at one end of the filter seat. A displacement block is slidably connected to the inner wall of the displacement seat. A mounting frame is symmetrically and fixedly connected to the top of the displacement seat. A vertical plate is fixedly connected to the top of the mounting frame. A first motor is mounted on the outer wall of the displacement block. A spur gear is connected to the output end of the first motor. A gear frame is symmetrically and slidably connected to both sides of the spur gear inside the displacement block. One end of the gear frame extends out of the displacement block and is fixedly connected to a pressure plate. A connecting block is fixedly connected to the bottom end of the pressure plate. A slide rod extending out of the pressure plate is slidably connected inside the pressure plate. A spring is connected between the slide rod and the pressure plate. A fixing frame is fixedly connected to the bottom end of the slide rod. The connecting block extends out of the fixing frame. A sampling tube is fixedly connected to the outer wall of the sampling seat.

[0009] As a further embodiment of the present invention: the installation mechanism includes a locking block, which is symmetrically and fixedly connected to the top two sides of the filter seat; a limiting frame is symmetrically and fixedly connected to the top of the top cover; a positioning plate is slidably connected to the inner wall of the limiting frame; a slot is formed on the outer wall of the positioning plate; a displacement plate is fixedly connected to the outer wall of the displacement block; a second motor is installed on the outer wall of the displacement seat; a threaded rod is connected to the output end of the second motor; the threaded rod passes through the displacement plate; and positioning frames are symmetrically and fixedly connected to both sides of the displacement block.

[0010] As a further embodiment of the present invention: the inner wall of the sampling seat is in contact with the outer wall of the movable plate, and the top and bottom of the movable plate are fixedly connected with a first sealing ring.

[0011] As a further embodiment of the present invention: the outer wall of the gear frame is provided with a tooth groove, which meshes with the spur gear.

[0012] As a further embodiment of the present invention: the outer wall of the connecting block is fitted with the inner wall of the connecting groove, and the inner wall of the fixing groove is fitted with the outer wall of one end of the fixing frame.

[0013] As a further embodiment of the present invention: the end of the slide rod extending from the pressure plate is provided with an inclined surface.

[0014] As a further embodiment of the present invention: the inner wall of the limiting frame is in contact with the outer wall of the positioning plate, and the outer wall of the card block is in contact with the inner wall of the card slot.

[0015] As a further aspect of the present invention: a second sealing ring is installed at the junction of the top cover and the filter seat.

[0016] As a further embodiment of the present invention: the outer wall of the displacement plate is provided with a threaded hole, and the threaded hole matches the threaded rod.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] 1. Achieved online, automated, and isolated sampling: By setting up a sampling mechanism, automatic and isolated sampling can be performed on both sides of the filter seat (i.e., before and after filtration) during normal operation of the heat transfer oil circulation system. The first motor drives the pressure plate to move downward, which in turn drives the movable plate through the vertical rod. While cutting off the oil path on that side, it connects the circular groove to the sampling tube, allowing the oil sample at that location to flow out accurately. The entire process requires no machine shutdown or manual intervention, greatly improving sampling efficiency and operational safety, and providing reliable samples for real-time evaluation of the filtration effect.

[0019] 2. Facilitates accurate assessment of filtration performance and filter cartridge condition: By obtaining heat transfer oil samples before and after filtration, the two samples can be compared and analyzed for indicators such as impurity content and particle size. This allows for a direct and quantitative evaluation of the current filter cartridge's filtration efficiency, saturation level, and service life, providing a scientific basis for filter element replacement. This enables an upgrade from "periodic replacement" to "on-demand replacement" in the operation and maintenance mode, reducing maintenance costs and oil waste.

[0020] 3. The filter cartridge replacement process is made safer and more automated: By setting up an installation mechanism, when the filter cartridge needs to be replaced, the second motor drives the displacement block to move downwards as a whole, causing the pressure plates on both sides to move synchronously, automatically cutting off the oil guide pipes on both sides of the filter seat in advance, completely isolating the filter chamber to be replaced. At the same time, the positioning frame moves downwards with the displacement block and disengages from the positioning plate, allowing for easy unlocking and opening of the top cover. This design fundamentally avoids the risk of high-temperature heat transfer oil splashing during traditional filter cartridge replacement, ensuring operator safety. Furthermore, the entire process is seamless and rapid, significantly shortening the system maintenance window.

[0021] 4. Features linkage self-locking and status reset functions: The sampling and installation mechanism is ingeniously designed with mechanical linkage and self-locking structures. During sampling, the cooperation of the slide rod, spring, fixing frame, and fixing groove ensures reliable connection and power transmission between the pressure plate and the vertical rod; during reset, the slide rod contacts the vertical plate under pressure, automatically releasing the locking of the fixing frame and fixing groove, allowing the mechanism to reset smoothly. After replacing the filter element, the upward movement of the displacement block in the installation mechanism not only restores the oil circuit to its original state but also causes the positioning frame to re-lock the positioning plate, automatically reinforcing the top cover and ensuring the sealing reliability of the system after restarting.

[0022] 5. Compact structure, high integration, and easy integration and maintenance: The entire unit integrates online filtration, dual-channel sampling, safety shut-off, and quick core replacement functions into one compact and reasonable structure. It can be directly installed in existing heat transfer oil pipelines without requiring large-scale system modifications. The synergistic operation of each functional module not only meets the core requirements of online monitoring and maintenance but also ensures the overall sealing of the system through designs such as sealing rings, reducing the risk of leakage and extending the service life of the equipment.

[0023] In summary, this invention not only solves the problem of online sampling and evaluation of filtration effects in traditional heat transfer oil filtration systems, but also enables worry-free replacement of filter elements through automated and safe design, providing strong equipment support for the intelligent operation and maintenance and safe and efficient operation of heat transfer oil circulation systems. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of the present invention;

[0025] Figure 2 This is a schematic diagram of the installation of the filter cartridge of the present invention;

[0026] Figure 3 This is a schematic diagram of the internal structure of the vertical rod of the present invention;

[0027] Figure 4 This is a schematic diagram of the installation of the displacement block of the present invention;

[0028] Figure 5 This is a schematic diagram of the internal structure of the displacement seat of the present invention;

[0029] Figure 6 This is a schematic diagram of the internal structure of the displacement block of the present invention;

[0030] Figure 7 This is a schematic diagram of the internal structure of the pressure plate of the present invention;

[0031] Figure 8 This is a schematic diagram of the positioning frame of the present invention;

[0032] Figure 9 This is a schematic diagram of the positioning plate mechanism of the present invention;

[0033] Figure 10 This is a schematic diagram of the installation of the positioning plate of the present invention.

[0034] In the diagram: 1. Oil guide pipe; 2. Filter seat; 3. Top cover; 4. Pressure rod; 5. Baffle plate; 6. Filter cylinder; 7. Sampling mechanism; 701. Sampling seat; 702. Movable plate; 703. Circular groove; 704. Vertical rod; 705. Connecting groove; 706. Fixing groove; 707. Displacement seat; 708. Displacement block; 709. Mounting bracket; 710. Vertical plate; 711. First motor; 712. Spur gear; 7 13. Gear frame; 714. Pressure plate; 715. Connecting block; 716. Slide rod; 717. Spring; 718. Fixing frame; 719. Sampling tube; 8. Installation mechanism; 801. Locking block; 802. Limiting frame; 803. Positioning plate; 804. Locking groove; 805. Displacement plate; 806. Second motor; 807. Threaded rod; 808. Positioning frame; 9. First sealing ring; 10. Second sealing ring. Detailed Implementation

[0035] 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.

[0036] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In the description of this invention, it should be noted that unless otherwise explicitly specified and limited, the terms "installed," "connected," "linked," and "set up" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances. The following describes embodiments of the invention based on its overall structure.

[0037] Please see Figures 1 to 10In this embodiment of the invention, the online filtration and sampling device of the heat transfer oil circulation system includes an oil guide pipe 1, a filter seat 2 fixedly connected to the outer wall of the oil guide pipe 1, a top cover 3 installed at the top of the filter seat 2, a pressure rod 4 fixedly connected to the bottom of the top cover 3, a partition 5 slidably connected to the inner wall of the filter seat 2, a filter cylinder 6 fixedly connected to the bottom of the partition 5, and the bottom of the pressure rod 4 contacting the bottom of the inner wall of the filter cylinder 6. The heat transfer oil is sampled by the sampling mechanism 7, and the top cover 3 is installed on the filter seat 2 by the installation mechanism 8.

[0038] In this embodiment: heat transfer oil passes through the oil pipe 1 and through the filter seat 2. The partition 5 is slidably connected to the inner wall of the filter seat 2 through the sealing ring. The top cover 3 is installed on the top of the filter seat 2. The pressure rod 4 presses the filter cylinder 6 into the filter seat 2. When the heat transfer oil passes through the filter seat 2, impurities remain in the filter cylinder 6 and are collected.

[0039] Please refer to this carefully. Figures 1 to 7 The sampling mechanism 7 includes a sampling seat 701, which is fixedly connected to the outer wall of the oil guide pipe 1 and located on both sides of the filter seat 2. A movable plate 702 is slidably connected to the inner wall of the sampling seat 701. A circular groove 703 is formed on the outer wall of the movable plate 702. A vertical rod 704 is fixedly connected to the top of the movable plate 702, extending above the sampling seat 701. A connecting groove 705 is formed at the top of the vertical rod 704, and a fixing groove 706 is formed on the inner wall of the connecting groove 705. The sampling mechanism 7 also includes a displacement seat 707, which is located at one end of the filter seat 2. A displacement block 708 is slidably connected to the inner wall of the displacement seat 707. A mounting bracket 709 is symmetrically fixedly connected to the top of the displacement seat 707. A vertical plate 710 is fixedly connected to the top. A first motor 711 is installed on the outer wall of the displacement block 708. A spur gear 712 is connected to the output end of the first motor 711. A gear frame 713 is symmetrically slidably connected to both sides of the spur gear 712 inside the displacement block 708. One end of the gear frame 713 extends out of the displacement block 708 and is fixedly connected to a pressure plate 714. A connecting block 715 is fixedly connected to the bottom end of the pressure plate 714. A slide rod 716 extending out of the pressure plate 714 is slidably connected inside the pressure plate 714. A spring 717 is connected between the slide rod 716 and the pressure plate 714. A fixing frame 718 is fixedly connected to the bottom end of the slide rod 716. The fixing frame 718 extends out of the connecting block 715. A sampling tube 719 is fixedly connected to the outer wall of the sampling seat 701.

[0040] In this embodiment: the heat transfer oil in the oil guide pipe 1 passes through the sampling seat 701 via the circular groove 703. The vertical rod 704 moves, causing the movable plate 702 to slide within the sampling seat 701. The movable plate 702 moves downward, causing the circular groove 703 to separate from the inner cavity of the oil guide pipe 1. The movable plate 702 cuts off the oil guide pipe 1. At the same time, the circular groove 703 moves and contacts one end of the sampling tube 719. The heat transfer oil in the circular groove 703 flows out through the sampling tube 719, completing the sampling. Then, the movable plate 702 moves upward to reset, and the circular groove 703 connects with the inner cavity of the oil guide pipe 1, opening the oil guide pipe 1. The first motor 711 is started. The first motor 711 drives the spur gear 712 to rotate. The rotation of the spur gear 712 drives the two gear frames 713 to move in opposite directions. The displacement of the gear frames 713 drives the two pressure plates 714 to move in opposite directions.

[0041] When the heat transfer oil passes through the oil pipe 1, the two pressure plates 714 are in a horizontal state, the connecting block 715 is located in the connecting groove 705, and the pressure plates 714 and the slide rod 716 are in contact with the vertical plate 710. The spring 717 is under compression, and the fixing bracket 718 enters the connecting block 715. When the pressure plate 714 moves downward, the slide rod 716 and one end of the pressure plate 714 separate from the vertical plate 710. The slide rod 716 is reset by the elastic force of the spring 717. The displacement of the slide rod 716 drives the fixing bracket 718 to move. The fixing bracket 718 moves out of the connecting block 715 and engages with the fixing bracket 718. The fixed groove 706 fixes the connecting block 715 in the connecting groove 705. The pressure plate 714 moves downward, causing the vertical rod 704 to move downward. The displacement of the vertical rod 704 causes the movable plate 702 to move. When the pressure plate 714 moves to reset, the fixed bracket 718 engages with the fixed groove 706, which can drive the movable plate 702 to move upward synchronously until the sliding rod 716 contacts the vertical plate 710. The sliding rod 716 is displaced by force and enters the pressure plate 714, which compresses the spring 717. At this time, the fixed bracket 718 moves out of the fixed groove 706, and the pressure plate 714 and the movable plate 702 return to their original positions at the same time.

[0042] When one pressure plate 714 moves downward, the other pressure plate 714 moves upward. At this time, the sliding rod 716 on the other pressure plate 714 is always in contact with the vertical plate 710. The displacement of the pressure plate 714 causes the connecting block 715 to move out of the connecting groove 705, thereby preventing the vertical rod 704 from moving. When the pressure plate 714 is reset, the displacement of the pressure plate 714 causes the connecting block 715 to move into the connecting groove 705.

[0043] When sampling the heat transfer oil on one side of the filter holder 2, the first motor 711 is started. The operation of the first motor 711 drives the pressure plate 714 on one side to move downward. The displacement of the pressure plate 714 drives the movable plate 702 to move downward through the vertical rod 704. The displacement of the movable plate 702 cuts off the oil guide pipe 1 on one side, and connects the inner cavity of the circular groove 703 with the sampling tube 719. The heat transfer oil in the circular groove 703 flows out through the sampling tube 719, thus completing the sampling operation. This design facilitates automatic sampling of the heat transfer oil before and after filtration. By detecting impurities in the heat transfer oil before and after filtration, the filtration effect of different filter cartridges 6 can be checked. It is worth noting that one end of the sampling tube 719 is connected to a mechanical impurity tester, which is mainly used to determine the impurity content in the heat transfer oil.

[0044] Please refer to this carefully. Figures 8 to 10 The installation mechanism 8 includes a locking block 801, which is symmetrically fixedly connected to the top two sides of the filter base 2. A limiting frame 802 is symmetrically fixedly connected to the top of the top cover 3. A positioning plate 803 is slidably connected to the inner wall of the limiting frame 802. A slot 804 is opened on the outer wall of the positioning plate 803. A displacement plate 805 is fixedly connected to the outer wall of the displacement block 708. A second motor 806 is installed on the outer wall of the displacement base 707. A threaded rod 807 is connected to the output end of the second motor 806. The threaded rod 807 passes through the displacement plate 805. Positioning frames 808 are symmetrically fixedly connected to both sides of the displacement block 708.

[0045] In this embodiment: when the filter cartridge 6 is replaced, the second motor 806 is started. The second motor 806 drives the threaded rod 807 to rotate, which in turn moves the displacement plate 805. The displacement plate 805 moves the displacement block 708, which moves downward within the displacement seat 707. The displacement block 708 moves both pressure plates 714 downward, cutting off the oil guide pipes 1 on both sides of the filter seat 2 to prevent heat transfer oil from spraying out of the filter seat 2 opening during subsequent replacement. At the same time, the displacement block 708 moves the positioning frame 808 to separate from the positioning plate 803. At this time, the positioning plate 803 can be pushed to move, sliding within the limiting frame 802 until the locking block 801 disengages from the locking slot 804, releasing the fixation of the top cover 3. The top cover 3 is then moved to open the top of the filter seat 2, allowing the filter to be opened. The filter cartridge 6 is removed from the filter base 2, and a new filter cartridge 6 is placed into the top cover 3. After completion, the top cover 3 is pressed tightly against the top of the filter base 2, and the positioning plate 803 is pushed to slide within the limiting frame 802 until the locking block 801 engages in the slot 804, fixing the top cover 3 to the top of the filter base 2. After completion, the second motor 806 operates to drive the displacement block 708 to move upward. The displacement block 708 resets, driving the pressure plate 714 to reset, thereby opening the oil guide pipe 1. At the same time, the positioning frame 808 moves upward and contacts the positioning plate 803, thereby preventing the locking block 801 from displacing out of the slot 804 and automatically reinforcing the top cover 3. This design facilitates the quick replacement of the filter cartridge 6, and automatically cuts off the oil guide pipes 1 on both sides of the filter base 2 during replacement, preventing heat transfer oil from spraying out of the opening of the filter base 2 during subsequent replacements, ensuring the safety of the replacement operation.

[0046] Please refer to this carefully. Figures 1 to 7 The inner wall of the sampling seat 701 is in contact with the outer wall of the movable plate 702, and the top and bottom of the movable plate 702 are fixedly connected with the first sealing ring 9.

[0047] In this embodiment: the vertical rod 704 is displaced, causing the movable plate 702 to slide within the sampling seat 701, and the first sealing ring 9 is used to improve the sealing between the movable plate 702 and the sampling seat 701.

[0048] Please refer to this carefully. Figures 1 to 7 The outer wall of the gear frame 713 is provided with tooth grooves, which mesh with the spur gear 712.

[0049] In this embodiment: the first motor 711 drives the spur gear 712 to rotate, the rotation of the spur gear 712 drives the two gear frames 713 to move in opposite directions, and the displacement of the gear frames 713 drives the two pressure plates 714 to move in opposite directions.

[0050] Please refer to this carefully. Figures 1 to 7The outer wall of the connecting block 715 is in contact with the inner wall of the connecting groove 705, and the inner wall of the fixing groove 706 is in contact with the outer wall of one end of the fixing bracket 718.

[0051] In this embodiment: the connecting block 715 is connected into the connecting groove 705; when the pressure plate 714 moves downward, the slide rod 716 and one end of the pressure plate 714 separate from the vertical plate 710, the slide rod 716 is reset by the elastic force of the spring 717, the displacement of the slide rod 716 drives the fixing frame 718 to move, the fixing frame 718 moves out of the connecting block 715 and engages into the fixing groove 706, fixing the connecting block 715 in the connecting groove 705.

[0052] Please refer to this carefully. Figures 1 to 7 The end of the slide bar 716 that extends out of the pressure plate 714 is provided with a bevel.

[0053] In this embodiment: when the pressure plate 714 moves to reset, the slide rod 716 contacts the vertical plate 710, and the slide rod 716 is displaced by force and enters the pressure plate 714, which compresses the spring 717. At this time, the fixing bracket 718 is displaced out of the fixing groove 706.

[0054] Please refer to this carefully. Figures 8 to 10 The inner wall of the limiting frame 802 is in contact with the outer wall of the positioning plate 803, the outer wall of the card block 801 is in contact with the inner wall of the card slot 804, and a second sealing ring 10 is installed at the junction of the top cover 3 and the filter seat 2.

[0055] In this embodiment: the top cover 3 is pressed tightly against the top of the filter seat 2, and the positioning plate 803 is pushed to slide within the limiting frame 802 until the locking block 801 engages with the locking groove 804, thus fixing the top cover 3 to the top of the filter seat 2. The second sealing ring 10 is used to improve the sealing between the filter seat 2 and the top cover 3.

[0056] Please refer to this carefully. Figures 8 to 10 The outer wall of the displacement plate 805 is provided with a threaded hole, which matches the threaded rod 807.

[0057] In this embodiment: the second motor 806 drives the threaded rod 807 to rotate, the rotation of the threaded rod 807 drives the displacement plate 805 to move, the displacement of the displacement plate 805 drives the displacement block 708 to move, and the displacement block 708 moves downward within the displacement seat 707.

[0058] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. An online filtration and sampling device for a heat transfer oil circulation system, comprising an oil guide pipe (1), characterized in that, A filter seat (2) is fixedly connected to the outer wall of the oil guide pipe (1). A top cover (3) is installed on the top of the filter seat (2). A pressure rod (4) is fixedly connected to the bottom of the top cover (3). A partition (5) is slidably connected to the inner wall of the filter seat (2). A filter cylinder (6) is fixedly connected to the bottom of the partition (5). The bottom of the pressure rod (4) is in contact with the bottom of the inner wall of the filter cylinder (6). The heat transfer oil is sampled by a sampling mechanism (7). The top cover (3) is installed on the filter seat (2) by an installation mechanism (8). The sampling mechanism (7) includes a sampling seat. (701), the sampling seat (701) is fixedly connected to the outer wall of the oil guide pipe (1) and located on both sides of the filter seat (2). The inner wall of the sampling seat (701) is slidably connected to a movable plate (702). The outer wall of the movable plate (702) is provided with a circular groove (703). The top of the movable plate (702) is fixedly connected to a vertical rod (704). The vertical rod (704) extends to the top of the sampling seat (701). The top of the vertical rod (704) is provided with a connecting groove (705). The inner wall of the connecting groove (705) is provided with a fixing groove (706). The sampling mechanism (7) further includes a displacement seat (707), which is disposed at one end of the filter seat (2). A displacement block (708) is slidably connected to the inner wall of the displacement seat (707). A mounting bracket (709) is symmetrically fixedly connected to the top of the displacement seat (707). A vertical plate (710) is fixedly connected to the top of the mounting bracket (709). A first motor (711) is installed on the outer wall of the displacement block (708). A spur gear (712) is connected to the output end of the first motor (711). Teeth are symmetrically slidably connected to both sides of the spur gear (712) inside the displacement block (708). The frame (713) has a displacement block (708) extending from one end and a pressure plate (714) fixedly connected thereto. A connecting block (715) is fixedly connected to the bottom end of the pressure plate (714). A slide rod (716) extending from the pressure plate (714) is slidably connected inside the pressure plate (714). A spring (717) is connected between the slide rod (716) and the pressure plate (714). A fixing frame (718) is fixedly connected to the bottom end of the slide rod (716). The connecting block (715) extends from the fixing frame (718). A sampling tube (719) is fixedly connected to the outer wall of the sampling seat (701). The installation mechanism (8) includes a locking block (801), which is symmetrically fixedly connected to the top two sides of the filter seat (2). The top of the top cover (3) is symmetrically fixedly connected to a limiting frame (802). The inner wall of the limiting frame (802) is slidably connected to a positioning plate (803). The outer wall of the positioning plate (803) is provided with a slot (804). The outer wall of the displacement block (708) is fixedly connected to a displacement plate (805). The outer wall of the displacement seat (707) is equipped with a second motor (806). The output end of the second motor (806) is connected to a threaded rod (807). The threaded rod (807) passes through the displacement plate (805). The two sides of the displacement block (708) are symmetrically fixedly connected to positioning frames (808). The outer wall of the connecting block (715) is in contact with the inner wall of the connecting groove (705), and the inner wall of the fixing groove (706) is in contact with the outer wall of one end of the fixing frame (718).

2. The online filtration and sampling device for the heat transfer oil circulation system according to claim 1, characterized in that, The inner wall of the sampling seat (701) is in contact with the outer wall of the movable plate (702), and the top and bottom of the movable plate (702) are fixedly connected with a first sealing ring (9).

3. The online filtration and sampling device for the heat transfer oil circulation system according to claim 1, characterized in that, The outer wall of the gear frame (713) is provided with a tooth groove, which meshes with the spur gear (712).

4. The online filtration and sampling device for the heat transfer oil circulation system according to claim 1, characterized in that, The slide bar (716) has an inclined surface extending from one end of the pressure plate (714).

5. The online filtration and sampling device for the heat transfer oil circulation system according to claim 1, characterized in that, The inner wall of the limiting frame (802) is in contact with the outer wall of the positioning plate (803), and the outer wall of the card block (801) is in contact with the inner wall of the card slot (804).

6. The online filtration and sampling device for the heat transfer oil circulation system according to claim 1, characterized in that, A second sealing ring (10) is installed at the junction of the top cover (3) and the filter seat (2).

7. The online filtration and sampling device for the heat transfer oil circulation system according to claim 1, characterized in that, The outer wall of the displacement plate (805) is provided with a threaded hole, which matches the threaded rod (807).

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