Waste lubricating oil regeneration pre-filtering device

Abstract

The utility model provides a waste lubricating oil regenerating and pre-filtering device, which relates to the technical field of lubricating oil recycling, and particularly comprises a box body, a top plate is arranged at the top of the box body, a first cavity and a second cavity are arranged on the box body, the first cavity is communicated with the second cavity, and a plurality of heating rods are arranged in the box body and positioned on the outer side of the first cavity. A spiral stirring rod is rotationally connected to the interior of the first cavity, two bases are arranged in the second cavity, the two bases are both inserted into the box body and are in sliding connection with the box body, and a first sieve plate and a second sieve plate are arranged in each base. The first sieve plate and the second sieve plate are arranged on the two bases correspondingly, a multi-stage filtering structure is formed, meanwhile, a T-shaped insertion plate can be driven to move through telescopic movement of a first electric telescopic rod, then sliding of the second sieve plate relative to the first sieve plate is achieved, and the gap between the first sieve plate and the second sieve plate is adjusted; the filtering requirements of impurities with different particle sizes are met.

Description

Technical Field

[0001] This utility model relates to the field of lubricating oil recycling technology, specifically a waste lubricating oil regeneration pre-filtration device. Background Technology

[0002] In many fields such as machinery and chemicals, lubricating oil is a key medium for ensuring the normal operation of equipment, playing a vital role in reducing friction and protecting machine parts. However, with increased usage time, lubricating oil gradually oxidizes and emulsifies. Furthermore, due to the wear and tear of mechanical parts, a large amount of impurities, especially iron filings, can become trapped within it, leading to a decline in its performance and necessitating replacement. Statistics show that the amount of waste lubricating oil generated globally each year is considerable. If this waste lubricating oil is directly discarded, it will not only cause serious pollution to the soil, water sources, and other ecological environments but also result in a huge waste of resources.

[0003] Chinese Patent Announcement No. CN219023402U discloses a waste lubricating oil filtration device, relating to the field of lubricating oil treatment technology. This waste lubricating oil filtration device includes a housing. Two mounting inclined plates are fixedly connected to the inner walls of opposite sides of the housing. A filter plate is fixedly connected between the two mounting inclined plates. A cleaning frame is disposed between the two mounting inclined plates, located above the filter plate. Scraper teeth are fixedly connected to the lower surface of the cleaning frame. A rotating disk is rotatably connected to the inner wall of the housing. Arc-shaped fan blades are fixedly connected to the outer surface of the rotating disk. This waste lubricating oil filtration device eliminates the need for manual movement of the cleaning frame, further reducing the workload of operators. When the cleaning frame moves, the scraper teeth simultaneously agitate the filter residue on the filter plate, thus preventing the filter plate from being clogged by filter residue during use, ensuring the effectiveness of the filter plate, and preventing lubricating oil from flowing out of the housing.

[0004] In the existing technology, the waste lubricating oil regeneration pre-filtration device mainly relies on the scraping teeth on the cleaning frame to prevent the filter plate mesh from clogging. There is no related structure to adjust the filtration precision, and it is impossible to adjust the fineness of filtration according to actual filtration needs. Therefore, we have made improvements to this and proposed a waste lubricating oil regeneration pre-filtration device. Utility Model Content

[0005] The purpose of this invention is to address the problem that a current waste lubricating oil regeneration pre-filtration device cannot adjust the fineness of filtration according to actual filtration needs during use.

[0006] To achieve the above-mentioned objectives, this utility model provides the following technical solution:

[0007] The waste lubricating oil regeneration pre-filtration device improves the above-mentioned problems by setting a first screen plate and a second screen plate on two bases respectively, and adjusting the gap between the first screen plate and the second screen plate to meet the filtration requirements of impurities of different particle sizes.

[0008] The application is as follows:

[0009] A waste lubricating oil regeneration pre-filtration device includes a housing with a top plate. The housing has a first cavity and a second cavity, which are connected. Multiple heating rods are located inside the housing and outside the first cavity. A spiral stirring rod is rotatably connected inside the first cavity. Two bases are located inside the second cavity, both inserted into and slidably connected to the housing. A first sieve plate and a second sieve plate are located inside each base, and the bases are fixedly connected to the first sieve plates. Two first electric telescopic rods are embedded on one side of the inner wall of each base. T-shaped inserts and auxiliary plates are respectively located on both sides of each of the two second sieve plates, inserted into and slidably connected to the bases and second sieve plates. The output end of the first electric telescopic rod is fixedly connected to the T-shaped insert. Adjacent first and second sieve plates are slidably connected.

[0010] As a preferred technical solution of this application, multiple T-shaped rods are fixedly installed on the side of each of the two auxiliary plates away from the second sieve plate. The multiple T-shaped rods are inserted into the interior of the base and slidably connected thereto. A return spring is fixedly installed on the end of each of the multiple T-shaped rods away from the auxiliary plate. The two ends of the multiple return springs are respectively fixedly connected to the base and the second sieve plate.

[0011] As a preferred technical solution of this application, a second electric telescopic rod is fixedly installed inside the box, and a baffle is fixedly installed at the output end of the second electric telescopic rod. The baffle is slidably connected to the box and the first cavity, and a through groove that cooperates with the first cavity is provided on the baffle.

[0012] As a preferred technical solution of this application, a servo motor is fixedly installed inside the top plate, and the output end of the servo motor is fixedly connected to the spiral stirring rod, which passes through the bottom of the top plate and is rotatably connected to it;

[0013] As a preferred technical solution of this application, a scraper is fixedly installed on the outer bottom of the spiral stirring rod, and the scraper is slidably connected to the box body and the first cavity;

[0014] As a preferred technical solution of this application, a side plate is provided on one side of the box body, the side plate is inserted into the interior of the box body and slidably connected thereto, and both bases are inserted into the interior of the side plate and slidably connected thereto;

[0015] As a preferred technical solution of this application, fixing blocks are fixedly installed on the top of both sides of the box body, and sliders are provided inside the two fixing blocks. The two sliders are fixedly connected to the top plate, and the two sliders pass through the top of the fixing blocks and are slidably connected to them. Screws are provided on the top of the two sliders, and the screws pass through the sliders and are threadedly connected to them. The screws are inserted into the inside of the fixing blocks and are threadedly connected to them.

[0016] As a preferred technical solution of this application, a temperature sensor is embedded in the bottom of the inner wall of the top plate, a flow monitor is installed inside the box, and a controller is installed on the top of the top plate. The controller is electrically connected to the first electric telescopic rod, the servo motor, the second electric telescopic rod, the temperature sensor, and the flow monitor.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0018] In the scheme of this application:

[0019] (1) A first sieve plate and a second sieve plate are respectively set on the two bases to form a multi-stage filtration architecture. At the same time, the T-shaped insert plate can be moved by the extension and retraction of the first electric telescopic rod, thereby realizing the sliding of the second sieve plate relative to the first sieve plate and adjusting the gap between the first sieve plate and the second sieve plate to meet the filtration requirements of impurities of different particle sizes.

[0020] (2) The design of the first and second screen plates can be separated, which allows maintenance personnel to disassemble the two screen plates separately and clean them in a targeted manner according to the clogging of different screen plates. At the same time, when the screen plates are partially damaged or worn, there is no need to replace the entire filter assembly, which reduces the cost of maintenance materials. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0022] Figure 2 This is a front sectional view of the present invention.

[0023] Figure 3 This utility model Figure 2 Enlarged view of point A in the middle;

[0024] Figure 4 This is a partial structural diagram of the present invention;

[0025] Figure 5 This is a side sectional view of the present invention.

[0026] Explanation of reference numerals in the accompanying drawings: 1. Housing; 2. First cavity; 3. Second cavity; 4. Base; 5. First sieve plate; 6. Second sieve plate; 7. First electric telescopic rod; 8. T-shaped insert plate; 9. Auxiliary plate; 10. T-shaped rod; 11. Return spring; 12. Top plate; 13. Servo motor; 14. Spiral stirring rod; 15. Heating rod; 16. Baffle; 17. Second electric telescopic rod; 18. Scraper; 19. Temperature sensor; 20. Flow monitor; 21. Fixing block; 22. Slider; 23. Screw; 24. Side plate; 25. Controller. Detailed Implementation

[0027] The present invention will be further described in detail below with reference to the accompanying drawings.

[0028] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

[0029] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to 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 utility model.

[0030] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0031] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0032] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0033] Example 1: Please refer to the appendix of the instruction manual. Figure 2-4 A waste lubricating oil regeneration pre-filtration device includes a housing 1, with a top plate 12 on the top of the housing 1. The housing 1 has a first cavity 2 and a second cavity 3, which are connected. Multiple heating rods 15 are arranged inside the housing 1 and outside the first cavity 2. A spiral stirring rod 14 is rotatably connected inside the first cavity 2. Two bases 4 are arranged inside the second cavity 3. Both bases 4 are inserted into the housing 1 and slidably connected thereto. A first sieve plate 5 and a second sieve plate 6 are arranged inside the two bases 4, and the bases 4 are fixedly connected to the first sieve plate 5. Two first electric telescopic rods 7 are embedded on one side of the inner wall of each of the two bases 4. T-shaped insert plates 8 and auxiliary plates 9 are respectively arranged on both sides of the two second sieve plates 6. The T-shaped insert plates 8 and auxiliary plates 9 are inserted into the bases 4 and the second sieve plates 6 and slidably connected thereto. The output end of the first electric telescopic rod 7 is fixedly connected to the T-shaped insert plate 8. Two adjacent first sieve plates 5 and second sieve plates 6 are slidably connected.

[0034] In this embodiment of the utility model, after the waste lubricating oil enters the second chamber 3, it first passes through the first screen plate 5 for preliminary filtration to remove larger particulate impurities. According to the particle size of the impurities to be filtered, the controller 25 controls the extension and retraction of the first electric telescopic rod 7, which drives the T-shaped insert plate 8 to move, adjusts the position of the second screen plate 6 relative to the first screen plate 5, and adjusts the gap between the first screen plate 5 and the second screen plate 6 so that the waste lubricating oil passes through the second screen plate 6 for secondary filtration to further remove smaller particulate impurities.

[0035] When the second screen plate 6 needs to be disassembled for cleaning or replacement, the controller 25 controls the first electric telescopic rod 7 to start, causing its output end to drive the T-shaped insert plate 8 to retract into the base 4. As the T-shaped insert plate 8 retracts, its limiting effect on the second screen plate 6 is released. At this time, the return spring 11, which was originally in a compressed state, begins to release its elastic potential energy and generates an outward elastic force. Under the action of the return spring 11, the auxiliary plate 9 slides along the inside of the base 4 and gradually moves outward from the inside of the second screen plate 6. When the auxiliary plate 9 is completely removed from the inside of the second screen plate 6, the second screen plate 6 can be easily removed from the base 4, thereby realizing the convenient disassembly of the second screen plate 6 and facilitating subsequent cleaning and maintenance work.

[0036] In this embodiment of the utility model, the T-shaped insert plate 8 can be moved by the telescopic movement of the first electric telescopic rod 7, thereby realizing the sliding of the second screen plate 6 relative to the first screen plate 5, adjusting the gap between the first screen plate 5 and the second screen plate 6 to adapt to the filtration requirements of impurities of different particle sizes. At the same time, the first screen plate 5 and the second screen plate 6 can be designed to be separated, so that maintenance personnel can disassemble the two screen plates separately and clean them in a targeted manner according to the clogging of different screen plates.

[0037] Example 2: Please refer to the appendix of the instruction manual. Figure 1-4 In a preferred embodiment of the present invention, multiple T-shaped rods 10 are fixedly installed on the side of each of the two auxiliary plates 9 away from the second sieve plate 6. The multiple T-shaped rods 10 are inserted into the interior of the base 4 and slidably connected thereto. A return spring 11 is fixedly installed on the end of each of the multiple T-shaped rods 10 away from the auxiliary plate 9. The two ends of the multiple return springs 11 are respectively fixedly connected to the base 4 and the second sieve plate 6.

[0038] A second electric telescopic rod 17 is fixedly installed inside the housing 1. A baffle 16 is fixedly installed at the output end of the second electric telescopic rod 17. The baffle 16 is slidably connected to the housing 1 and the first cavity 2. A through groove that cooperates with the first cavity 2 is opened on the baffle 16.

[0039] A servo motor 13 is fixedly installed inside the top plate 12. The output end of the servo motor 13 is fixedly connected to the spiral stirring rod 14. The spiral stirring rod 14 passes through the bottom of the top plate 12 and is rotatably connected to it.

[0040] A scraper 18 is fixedly installed on the bottom outer side of the spiral stirring rod 14, and the scraper 18 is slidably connected to the box body 1 and the first cavity 2.

[0041] A side plate 24 is provided on one side of the box body 1. The side plate 24 is inserted into the interior of the box body 1 and slidably connected thereto. Both bases 4 are inserted into the interior of the side plate 24 and slidably connected thereto. Multiple fixing bolts are provided on the side of the side plate 24 away from the box body 1. The multiple fixing bolts all pass through the side plate 24 and are threadedly connected thereto. The multiple fixing bolts are all inserted into the interior of the box body 1 and are threadedly connected thereto.

[0042] Fixing blocks 21 are fixedly installed on the top of both sides of the housing 1. Slider 22 is provided inside the two fixing blocks 21. The two sliders 22 are fixedly connected to the top plate 12. The two sliders 22 pass through the top of the fixing blocks 21 and are slidably connected to them. Screws 23 are provided on the top of the two sliders 22. The screws 23 pass through the sliders 22 and are threadedly connected to them. The screws 23 are inserted into the inside of the fixing blocks 21 and are threadedly connected to them.

[0043] A temperature sensor 19 is embedded in the bottom of the inner wall of the top plate 12. A flow monitor 20 is installed inside the box 1. A controller 25 is installed on the top of the top plate 12. The controller 25 is electrically connected to the first electric telescopic rod 7, the servo motor 13, the second electric telescopic rod 17, the temperature sensor 19, and the flow monitor 20.

[0044] In this embodiment of the invention, the T-shaped rod 10 and the return spring 11 work together to keep the second sieve plate 6 in a stable position when it is not subjected to external force, thus ensuring the stability of the sieve plate.

[0045] The movement of the baffle 16 is controlled by the second electric telescopic rod 17, which can adjust the flow area between the first chamber 2 and the second chamber 3, thereby controlling the flow rate of waste lubricating oil and avoiding the filtration effect due to excessive flow.

[0046] Waste lubricating oil enters the first chamber 2 through a feed pipe located on one side of the top plate 12. The controller 25, based on temperature information from the temperature sensor 19, controls the heating rod 15 to heat the waste lubricating oil, reducing its viscosity for easier subsequent processing. Simultaneously, the servo motor 13 drives the spiral stirring rod 14 to rotate, causing the scraper 18 to scrape off the lubricating oil adhering to the bottom of the inner wall of the first chamber 2, thoroughly mixing it with the lubricating oil in the chamber to evenly disperse impurities. The rotation of the spiral stirring rod 14 also propels the waste lubricating oil towards the second chamber 3, acting as a guide.

[0047] The second cavity 3 is equipped with two bases 4. Both bases 4 are inserted into the box 1 and slidably connected to it. They are also inserted into the side plate 24 and slidably connected to it. The bases 4 are fixedly connected to the box 1 by multiple fixing bolts on the side plate 24. This structure facilitates the installation, disassembly and maintenance of the bases 4.

[0048] A temperature sensor 19 is embedded in the bottom of the inner wall of the top plate 12 to monitor the temperature of the waste lubricating oil in the first chamber 2 in real time. A flow monitor 20 is installed inside the housing 1 to detect the flow rate of the waste lubricating oil. A controller 25 is installed on the top of the top plate 12. The controller 25 is electrically connected to the electromagnet, the first electric telescopic rod 7, the servo motor 13, the second electric telescopic rod 17, the temperature sensor 19, and the flow monitor 20. Based on the data fed back by the temperature sensor 19 and the flow monitor 20, the controller 25 can automatically control the heating temperature of the heating rod 15, the speed of the servo motor 13, and the extension and retraction of the first and second electric telescopic rods 7 and 17, thereby realizing intelligent control of the pre-filtration process and ensuring that the device operates under optimal conditions.

[0049] Example 3: Please refer to the appendix of the instruction manual. Figure 5 In a preferred embodiment of the present invention, two insert plates are fixedly installed inside the housing 1 and inside the second cavity 3. A guide block is provided inside the second cavity 3. Both insert plates are inserted into the guide block and slidably connected to it. An electromagnet is provided inside the guide block. Multiple through holes that cooperate with the electromagnet are opened on the guide block. Protective plates are fixedly installed inside the guide block and inside the multiple through holes. The controller 25 is electrically connected to the electromagnet.

[0050] In this embodiment of the present invention, when the waste lubricating oil flows through the guide block of the second cavity 3, the controller 25 activates the electromagnet power supply to generate a strong magnetic field. Magnetic impurities such as iron filings and rust in the waste lubricating oil are adsorbed onto the inner wall of the through hole of the guide block and the surface of the protective plate under the action of the magnetic field, thereby achieving the separation of magnetic impurities from the oil. This replenishes the fine impurities that the first sieve plate 5 and the second sieve plate 6 cannot filter, significantly improving the filtration accuracy and providing purer oil for the subsequent regeneration process.

[0051] In this embodiment of the utility model, the electromagnet can adsorb and filter magnetic impurities in waste lubricating oil, further improving the filtration effect. The protective plate can prevent impurities from clogging the through holes and ensure the normal operation of the electromagnet. The guide block is placed inside the housing 1 through the insert plate for easy disassembly. At the same time, the controller 25 can dynamically adjust the power of the electromagnet according to the data of the flow monitor 20.

[0052] A heat dissipation hole is provided on the top plate 12 to cooperate with the servo motor 13. Rubber sealing rings and rubber gaskets are provided at the connection between the top plate 12 and the housing 1, and at the connection between the side plate 24 and the housing 1 to prevent waste lubricating oil leakage and ensure the airtightness of the device. A rubber sealing sleeve is installed at the rotating connection between the spiral stirring rod 14 and the top plate 12 to prevent lubricating oil from seeping out from the rotation gap, and at the same time play a certain role in buffering and noise reduction. Rubber dustproof rings are provided between the first screen plate 5 and the second screen plate 6, as well as between the first screen plate 5 and the base 4, to prevent impurities from entering the sliding gap, ensure smooth sliding of the screen plate, and prevent lubricating oil leakage. A rubber sealing strip is provided at the sliding connection between the baffle 16 and the housing 1 and the first cavity 2 to ensure that the baffle 16 can effectively seal during the flow adjustment process and prevent lubricating oil leakage.

[0053] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model shall fall within the scope of the technical solution of the present utility model.

Claims

1. A device for pre-filtering of waste lubricating oil for regeneration, comprising a tank (1), characterised in that, The top of the box (1) is provided with a top plate (12). The box (1) has a first cavity (2) and a second cavity (3) which are connected. Multiple heating rods (15) are provided inside the box (1) and outside the first cavity (2). A spiral stirring rod (14) is rotatably connected inside the first cavity (2). Two bases (4) are provided inside the second cavity (3). Both bases (4) are inserted into the box (1) and slidably connected thereto. The second base (4) is provided inside the second cavity (3). A sieve plate (5) and a second sieve plate (6) are provided, and a base (4) is fixedly connected to the first sieve plate (5). Two first electric telescopic rods (7) are embedded on one side of the inner wall of each of the two bases (4). T-shaped inserts (8) and auxiliary plates (9) are respectively provided on both sides of the two second sieve plates (6). The T-shaped inserts (8) and auxiliary plates (9) are inserted into the interior of the base (4) and the second sieve plate (6) and are slidably connected thereto. The output end of the first electric telescopic rod (7) is fixedly connected to the T-shaped insert (8). Two adjacent first sieve plates (5) and second sieve plates (6) are slidably connected.

2. The used lubricating oil regeneration prefiltering device according to claim 1, characterized in that, Multiple T-shaped rods (10) are fixedly installed on the side of each of the two auxiliary plates (9) away from the second sieve plate (6). The multiple T-shaped rods (10) are inserted into the base (4) and slidably connected thereto. A return spring (11) is fixedly installed on the end of each of the multiple T-shaped rods (10) away from the auxiliary plate (9). Both ends of the multiple return springs (11) are fixedly connected to the base (4) and the second sieve plate (6) respectively.

3. The used lubricating oil regeneration prefiltering device according to claim 1, characterized in that, The box (1) is fixedly installed with a second electric telescopic rod (17), and a baffle (16) is fixedly installed at the output end of the second electric telescopic rod (17). The baffle (16) is slidably connected to the box (1) and the first cavity (2), and a through groove that cooperates with the first cavity (2) is opened on the baffle (16).

4. The used lubricating oil regeneration prefiltering apparatus according to claim 1, characterized by, A servo motor (13) is fixedly installed inside the top plate (12). The output end of the servo motor (13) is fixedly connected to the spiral stirring rod (14). The spiral stirring rod (14) passes through the bottom of the top plate (12) and is rotatably connected to it.

5. The used lubricating oil regeneration prefiltering apparatus according to claim 1, wherein A scraper (18) is fixedly installed on the bottom outer side of the spiral stirring rod (14), and the scraper (18) is slidably connected to the box body (1) and the first cavity (2).

6. The used lubricating oil regeneration prefiltering apparatus according to claim 1, wherein A side plate (24) is provided on one side of the box (1). The side plate (24) is inserted into the inside of the box (1) and slidably connected thereto. Both bases (4) are inserted into the inside of the side plate (24) and slidably connected thereto.

7. The waste lubricating oil regeneration pre-filtration device according to claim 1, characterized in that, Fixing blocks (21) are fixedly installed on the top of both sides of the box (1). Slider blocks (22) are provided inside the two fixing blocks (21). The two sliders (22) are fixedly connected to the top plate (12). The two sliders (22) pass through the top of the fixing blocks (21) and are slidably connected to them. Screws (23) are provided on the top of the two sliders (22). The screws (23) pass through the sliders (22) and are threadedly connected to them. The screws (23) are inserted into the inside of the fixing blocks (21) and are threadedly connected to them.

8. The used lubricating oil regeneration prefiltering apparatus according to claim 1, wherein A temperature sensor (19) is embedded in the bottom of the inner wall of the top plate (12). A flow monitor (20) is installed inside the box (1). A controller (25) is installed on the top of the top plate (12). The controller (25) is electrically connected to the first electric telescopic rod (7), the servo motor (13), the second electric telescopic rod (17), the temperature sensor (19), and the flow monitor (20).

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