A waste mineral oil detection sampling device

Abstract

The utility model relates to waste mineral oil sampling technical field discloses a waste mineral oil detection sampling device, including oil pipe one and limit component, the top fixedly connected with handle of oil pipe one, the inner wall slidingly connected with filter plate one of oil pipe one, the upper surface fixedly connected with fixed block of filter plate one, the inside fixedly connected with fixed axle of oil pipe one, the outer wall rotationally connected with rotating plate of fixed axle, the top fixedly connected with connecting block of rotating plate, the outer wall space of connecting block is limited to post no. One, one end of spring no. One is fixedly connected with the outer wall of rotating plate. In the utility model, press the rotating plate, through the mutual cooperation between fixed axle, spring no. One, connecting block, limit post no. One, can make limit post no. One move in the inside fixed block, further realizes the effect that filter plate no. One starts installation and disassembly, effectively improves the cleanliness of filter plate no. One, reduces sample pollution, improves detection accuracy.

Description

Technical Field

[0001] This utility model relates to the field of waste mineral oil sampling technology, and in particular to a waste mineral oil detection and sampling device. Background Technology

[0002] Waste mineral oil refers to mineral oil whose original physical and chemical properties have been altered due to external factors during its extraction, processing, and use, rendering it unusable. Waste mineral oil has high recycling value. Sampling and testing can determine the degree of pollution, assess its recycling potential and quality, and thus select appropriate treatment processes. Furthermore, sampling and testing can provide a scientific basis for safe treatment, recycling, and environmental protection; therefore, a waste mineral oil testing and sampling device is needed.

[0003] The main function of a waste mineral oil testing and sampling device is to safely and accurately collect waste mineral oil samples for subsequent testing and analysis. It ensures the representativeness, purity, and stability of the samples while reducing the risk of contamination and leakage during the sampling process. In existing technologies, because the filter plate and the oil collection pipe are often fixed as a single unit, the filter plate is not thoroughly cleaned during cleaning, which can easily lead to contamination of the mineral oil samples and reduce the accuracy of the tests. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a waste mineral oil detection and sampling device, which aims to improve the problem that the filter plate and the oil collection pipe are mostly fixed as one piece, and the filter plate is not thoroughly cleaned during cleaning, which easily leads to the contamination of mineral oil samples and reduces the accuracy of detection.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a waste mineral oil detection and sampling device, comprising an oil collection pipe and a limiting assembly. A handle is fixedly connected to the top end of the oil collection pipe. A filter plate is slidably connected to the inner wall of the oil collection pipe. A fixing block is fixedly connected to the upper surface of the filter plate. The outer wall of the fixing block is slidably connected to the inner wall of the oil collection pipe. A fixing shaft is fixedly connected to the inside of the oil collection pipe. A rotating plate is rotatably connected to the outer wall of the fixing shaft. A connecting block is fixedly connected to the top end of the rotating plate. A limiting post is engaged with the outer wall of the connecting block. The outer wall of the limiting post is slidably connected to the inside of the oil collection pipe. The outer wall of the limiting post is engaged with the inside of the fixing block. One end of a spring is fixedly connected to the outer wall of the rotating plate. The other end of the spring is fixedly connected to the inside of the oil collection pipe. A protective shell is engaged with the outer wall of the oil collection pipe. The protective shell is sleeved on the outside of the rotating plate. An extension assembly is provided on the outer wall of the oil collection pipe.

[0006] The above technical solution involves pressing the rotating plate to make it rotate, which in turn drives the connecting block to rotate. The connecting block engages with the limiting post 1, and the movement of the connecting block drives the limiting post 1 to move. The movement of the limiting post 1 can achieve the function of engaging or disengaging from the fixed block. The filter plate 1 has a fixing effect on the fixed block, thereby achieving the function of quickly installing or removing the filter plate 1, effectively improving the disassembly efficiency and cleaning degree of the filter plate 1.

[0007] Preferably, the extension assembly includes a second oil production pipe, the second oil production pipe being internally threaded to the outer wall of the first oil production pipe, and a second filter plate being fixedly connected inside the second oil production pipe.

[0008] Preferably, the limiting component includes a pull rod, the outer wall of which is slidably connected to the inside of the first oil production pipe, a limiting post two fixedly connected to the outer wall of the pull rod, the outer wall of the limiting post two slidably connected to the inside of the first oil production pipe, a baffle fixedly connected to the outer wall of the limiting post two, the outer wall of the baffle slidably connected to the inside of the first oil production pipe, the outer wall of the limiting post two being engaged with the inside of the fixing block, and a spring two sleeved on the outer wall of the limiting post two, one end of the spring two being fixedly connected to the outer wall of the baffle, and the other end of the spring two being fixedly connected to the inside of the first oil production pipe.

[0009] Preferably, a support block is fixedly connected to the outer wall of the oil production pipe, a vacuum generator is installed inside the support block, and a funnel is fixedly connected inside the support block.

[0010] Preferably, an oil collecting bottle is slidably connected inside the support block, and the inner wall of the oil collecting bottle is slidably connected to the outer wall of the funnel.

[0011] Preferably, a motor is fixedly connected inside the support block, and a bidirectional threaded rod is fixedly provided at the output end of the motor. The outer wall of the bidirectional threaded rod is rotatably connected to the inside of the support block. A slider is threadedly connected to the outer wall of the bidirectional threaded rod, and a clamping block is fixedly connected to the outer wall of the slider. The outer wall of the clamping block is slidably connected to the inside of the support block, and the inner wall of the clamping block is engaged with the outer wall of the oil collecting bottle.

[0012] Preferably, a support frame is fixedly connected to the outer wall of the oil production pipe, a support plate is slidably connected to the outer wall of the support frame, and the lower surface of the oil collecting bottle is attached to the upper surface of the support plate.

[0013] Preferably, the outer wall of the support frame is fitted with a spring three, the top end of the spring three is fixedly connected to the outer wall of the support frame, and the bottom end of the spring three is fixedly connected to the upper surface of the support plate.

[0014] This utility model has the following beneficial effects:

[0015] 1. In this utility model, the filter plate can filter impurities. By pressing the rotating plate, the fixed shaft, spring, connecting block, and limiting post can move the limiting post inside the fixed block through the cooperation between them. This achieves the function of limiting or releasing the offset of the fixed block, thereby realizing the effect of starting the installation and disassembly of the filter plate. This makes the installation and disassembly of the filter plate more convenient and flexible, effectively improves the cleanliness of the filter plate, reduces sample contamination, and improves the accuracy of detection.

[0016] 2. In this utility model, the support plate can support the oil collecting bottle, and the drive motor, through the cooperation between the bidirectional threaded rod, the slider, and the clamping block, can clamp and fix the oil collecting bottle to ensure the stability of the oil collecting bottle. At the same time, it can adapt to oil collecting bottles of different diameters and improve flexibility. Attached Figure Description

[0017] Figure 1 This is a three-dimensional schematic diagram of a waste mineral oil detection and sampling device proposed in this utility model;

[0018] Figure 2 This is a partial structural diagram of the rotating plate of a waste mineral oil detection and sampling device proposed in this utility model;

[0019] Figure 3 This is a schematic diagram of a partial structure of the spring in a waste mineral oil detection and sampling device proposed in this utility model;

[0020] Figure 4 This is a partial structural diagram of the funnel of a waste mineral oil detection and sampling device proposed in this utility model;

[0021] Figure 5 This is a partial structural diagram of the clamping block of a waste mineral oil detection and sampling device proposed in this utility model.

[0022] Legend:

[0023] 1. Oil production tubing 1; 2. Handle; 3. Filter plate 1; 4. Fixing block; 5. Fixing shaft; 6. Rotating plate; 7. Spring 1; 8. Connecting block; 9. Limiting post 1; 10. Limiting assembly; 1001. Pull rod; 1002. Baffle; 1003. Limiting post 2; 1004. Spring 2; 11. Oil production tubing 2; 12. Filter plate 2; 13. Support block; 14. Vacuum generator; 15. Funnel; 16. Oil collecting bottle; 17. Motor; 18. Bidirectional threaded rod; 19. Slider; 20. Clamping block; 21. Support frame; 22. Spring 3; 23. Support plate; 24. Protective shell. Detailed Implementation

[0024] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model. Example

[0025] Reference Figure 1 and Figure 2 An embodiment of this utility model provides a waste mineral oil detection and sampling device, including an oil collection pipe 1 and a limiting component 10. A handle 2 is fixedly connected to the top end of the oil collection pipe 1. A filter plate 3 is slidably connected to the inner wall of the oil collection pipe 1. A fixing block 4 is fixedly connected to the upper surface of the filter plate 3. The outer wall of the fixing block 4 is slidably connected to the inner wall of the oil collection pipe 1. A fixing shaft 5 is fixedly connected to the inside of the oil collection pipe 1. A rotating plate 6 is rotatably connected to the outer wall of the fixing shaft 5. A connecting block 8 is fixedly connected to the top end of the rotating plate 6. A limiting post 9 is snapped onto the outer wall of the connecting block 8. The outer wall of the limiting post 9 is slidably connected to the inside of the oil collection pipe 1. The outer wall of the limiting post 9 is snapped onto the inside of the fixing block 4. One end of a spring 7 is fixedly connected to the outer wall of the rotating plate 6. The other end of the spring 7 is fixedly connected to the inside of the oil collection pipe 1. A protective shell 24 is snapped onto the outer wall of the oil collection pipe 1. The protective shell 24 is sleeved on the outside of the rotating plate 6. An extension component is provided on the outer wall of the oil collection pipe 1.

[0026] Specifically, a filter plate 3 is installed at the bottom of the oil production tubing 1 to filter impurities. The filter plate 3 has a rotating handle and a locking groove inside. The handle allows for easy removal of the filter plate 3, and it can also be locked into the locking groove on the outer wall of the filter plate 3 for storage. The filter plate 3 is fixed to the fixing block 4, and the fixing block 4 engages with the limiting post 9. The oil production tubing 1 is fixed to the fixed shaft 5, and the fixed shaft 5 supports the rotating plate 6. The rotating plate 6 serves to fix the connecting block 8. When the rotating plate 6 is pressed, it rotates on the outer wall of the fixed shaft 5, causing the connecting block 8 to rotate synchronously. The outer wall of the connecting block 8 engages with the inner wall of the limiting post 9. Simultaneously, the outer wall of the connecting block 8 can rotate within the inner wall of the limiting post 9. Therefore, when the connecting block 8 rotates outward, it causes the limiting post 9 to move outward within the oil production pipe 1. The oil production pipe 1 supports and limits the offset of the limiting post 9, ensuring that the limiting post 9 can only move within the oil production pipe 1. The oil production tubing 1 moves linearly inside. A sealing ring is installed at the sliding contact point between the oil production tubing 1 and the limiting post 9 to ensure a tight seal. A spring 7 is positioned between the rotating plate 6 and the oil production tubing 1. When the rotating plate 6 is pressed, the spring 7 is compressed, and the resulting rebound force causes the spring 7 to reset the rotating plate 6 and the limiting post 9. The movement of the limiting post 9 can disengage from or engage with the fixed block 4, thus limiting the offset of the fixed block 4. This design allows for the rapid installation and removal of filter plate 3, making the replacement process simple and quick, and improving the cleanliness of filter plate 3. The outer wall of the oil production pipe 1 is equipped with two long columns with slots. There is a base plate between the bottom of the long columns, and the slots match the protrusions of the protective shell 24. The base plate and the top plate of the protective shell 24 have the same shape. After the protective shell 24 and the long columns are engaged, a complete protective sleeve is formed, which plays a protective role and prevents waste mineral oil from entering the interior of the oil production pipe 1.

[0027] Reference Figure 1 The extension assembly includes a second oil production pipe 11, which is internally threaded to the outer wall of the first oil production pipe 1, and a filter plate 12 is fixedly connected inside the second oil production pipe 11.

[0028] Specifically, the bottom of the first oil production pipe 1 is connected to the inside of the second oil production pipe 11 by threads, thereby extending the length of the pipeline. The bottom of the second oil production pipe 11 is fixed with a filter plate 2 12, which can filter impurities. After the extension, the filter plate 2 12 and the filter plate 1 3 can achieve a further filtration effect. Example

[0029] Reference Figure 1 and Figure 3The limiting component 10 includes a pull rod 1001, the outer wall of which is slidably connected to the inside of the first oil production pipe 1, a limiting post 1003 fixedly connected to the outer wall of the pull rod 1001, the outer wall of the limiting post 1003 slidably connected to the inside of the first oil production pipe 1, a baffle 1002 fixedly connected to the outer wall of the limiting post 1003, the outer wall of the baffle 1002 slidably connected to the inside of the first oil production pipe 1, the outer wall of the limiting post 1003 being engaged with the inside of the fixing block 4, and a spring 1004 sleeved on the outer wall of the limiting post 1003, one end of the spring 1004 being fixedly connected to the outer wall of the baffle 1002, and the other end of the spring 1004 being fixedly connected to the inside of the first oil production pipe 1.

[0030] Specifically, in this embodiment, the pull rod 1001 has a fixing effect on the second limiting post 1003, and the second limiting post 1003 has a fixing effect on the baffle 1002. By pulling the pull rod 1001, the second limiting post 1003 can slide outward inside the first oil production pipe 1. When the second limiting post 1003 slides outward, it will disengage from the inside of the fixing block 4, releasing the offset restriction on the fixing block 4. The second spring 1004 is set between the baffle 1002 and the first oil production pipe 1. It will be stretched when the second limiting post 1003 moves outward. By stretching the second spring 1004, a contraction force will be generated. After the pull rod 1001 is released, the second spring 1004 will reset the second limiting post 1003, so that the second limiting post 1003 is locked back inside the fixing block 4, thereby fixing the fixing block 4 inside the first oil production pipe 1, further achieving the effect of starting the installation and disassembly of the filter plate 3.

[0031] Reference Figure 1 and Figure 4 A support block 13 is fixedly connected to the outer wall of the oil production pipe 1. A vacuum generator 14 is installed inside the support block 13. A funnel 15 is fixedly connected inside the support block 13. An oil collecting bottle 16 is slidably connected inside the support block 13. The inner wall of the oil collecting bottle 16 is slidably connected to the outer wall of the funnel 15.

[0032] Specifically, the oil production pipe 1 has a fixing function on the support block 13, and the support block 13 and the oil production pipe 1 have holes of the same size for the support block 13 to receive waste mineral oil. The support block 13 has a downward-sloping groove inside, which is connected to the funnel 15. The vacuum generator 14 is a prior art technology. The vacuum generator 14 can generate negative pressure, allowing the oil inside the oil production pipe 1 to enter the interior of the support block 13. Since the support block 13 has a downward-sloping groove inside, the waste mineral oil will flow into the interior of the funnel 15 due to gravity after entering the interior of the support block 13. At the same time, a wild gas sensor is installed inside the support block 13. The wild gas sensor is a prior art technology. The liquid level sensor can detect the height of the mineral oil inside the support block 13, preventing the mineral oil from entering the vacuum generator 14 due to excessive height. After the bottle mouth of the oil collection bottle 16 is placed on the bottom outer wall of the funnel 15, the mineral oil will flow from the funnel 15 into the interior of the oil collection bottle 16.

[0033] Reference Figure 4 and Figure 5 A motor 17 is fixedly connected inside the support block 13. A bidirectional threaded rod 18 is fixedly provided at the output end of the motor 17. The outer wall of the bidirectional threaded rod 18 is rotatably connected to the inside of the support block 13. A slider 19 is threadedly connected to the outer wall of the bidirectional threaded rod 18. A clamping block 20 is fixedly connected to the outer wall of the slider 19. The outer wall of the clamping block 20 is slidably connected to the inside of the support block 13. The inner wall of the clamping block 20 is engaged with the outer wall of the oil collecting bottle 16.

[0034] Specifically, the support block 13 fixes the motor 17, ensuring its stable operation. The support block 13 also supports the bidirectional threaded rod 18. Driving the motor 17 causes the bidirectional threaded rod 18 to rotate, which in turn moves the slider 19. The movement of the slider 19 allows the clamping block 20 to move in opposite directions within the support block 13. The support block 13 supports and limits the offset of the clamping block 20, ensuring that the clamping block 20 can only move linearly. The inward movement of the clamping block 20 clamps and fixes the oil collecting bottle 16, ensuring its stability. It can also clamp and fix oil collecting bottles 16 of different diameters, improving flexibility.

[0035] Reference Figure 4 A support frame 21 is fixedly connected to the outer wall of the oil production pipe 1, and a support plate 23 is slidably connected to the outer wall of the support frame 21. The lower surface of the oil collecting bottle 16 is attached to the upper surface of the support plate 23. A spring 3 22 is sleeved on the outer wall of the support frame 21. The top end of the spring 3 22 is fixedly connected to the outer wall of the support frame 21, and the bottom end of the spring 3 22 is fixedly connected to the upper surface of the support plate 23.

[0036] Specifically, the oil production pipe 1 has a fixing function on the support frame 21, and the support frame 21 has a supporting and limiting function on the support plate 23, so that the support plate 23 can only move up and down on the outer wall of the support frame 21. The spring 3 22 is set between the support plate 23 and the support frame 21. When the support plate 23 moves downward, the spring 3 22 will be stretched. The downward movement of the support plate 23 can adapt to the oil collection bottle 16 of different heights and support the oil collection bottle 16. The stretching of the spring 3 22 will generate an upward contraction force, which in turn generates an upward pulling force on the support plate 23. When the support plate 23 supports the oil collection bottle 16, the pulling force generated by the spring 3 22 can make the support plate 23 provide more stable support for the oil collection bottle 16.

[0037] Working principle: When the device is needed, the rotating plate 6 is pressed to rotate on the outer wall of the fixed shaft 5. When the rotating plate 6 rotates, it will drive the limiting post 9 to move outward inside the oil pipe 1 through the connecting block 8. The limiting post 9 will move outward and disengage from the inside of the fixed block 4, releasing the limiting offset restriction on the fixed block 4, so that the filter plate 3 can be taken out. When the rotating plate 6 is pressed, the rotating plate 6 will squeeze the spring 7. The rebound force generated by the spring 7 being squeezed will reset the rotating plate 6 after it is released, so that the limiting post 9 will limit the fixed block 4, achieving the effect of quick installation and disassembly.

[0038] Similarly, in another embodiment, pulling the lever 1001 causes the limiting post 1003 and the baffle 1002 to move outward inside the oil production pipe 1. When the limiting post 1003 moves outward, it will disengage from the inside of the fixing block 4, thereby releasing the limiting effect on the fixing block 4. At the same time as the limiting post 1003 moves outward, it will also compress the spring 1004. The spring 1004 can achieve the effect of resetting the limiting post 1003, so that the limiting post 1003 is stuck inside the fixing block 4, limiting the fixing block 4, fixing the fixing block 4 to the inner wall of the oil production pipe 1, thereby achieving the effect of starting to disassemble the filter plate 3.

[0039] After the filter plate 13 is installed, the oil collecting bottle 16 is placed inside the support block 13, and the bottle opening of the oil collecting bottle 16 is fitted onto the lower outer wall of the funnel 15. Then, the motor 17 is driven, which drives the bidirectional threaded rod 18 to rotate. The rotation of the bidirectional threaded rod 18 causes the slider 19 to move and the clamping block 20 to move synchronously, thereby clamping and fixing the bottle opening of the oil collecting bottle 16 to ensure the stability of the oil collecting bottle 16. Then, the oil collection pipe 11 is threadedly connected to the filter plate 12. Then, the filter plate 12 is placed into the waste mineral oil to be sampled. The vacuum generator 14 is driven, so that the oil entering the filter plate 12 is drawn out from the oil collection pipe 11 by negative pressure. Upon entering the support block 13, the oil flows into the funnel 15 due to the downward-sloping groove within the support block 13. From there, the oil flows into the oil collection bottle 16, achieving rapid collection of the required oil volume. This device not only allows for quick replacement and thorough cleaning of the filter plate 3, ensuring its cleanliness, effectively reducing sample contamination, and improving the accuracy of test results, but also enables the clamping and fixing of oil collection bottles 16 with different opening sizes. This ensures the stability of the oil collection bottle 16 while effectively improving its flexibility to adapt to different sampling volume requirements.

[0040] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A waste mineral oil detection and sampling device, comprising an oil extraction pipe (1) and a limiting component (10), characterized in that: A handle (2) is fixedly connected to the top end of the first oil production pipe (1). A filter plate (3) is slidably connected to the inner wall of the first oil production pipe (1). A fixing block (4) is fixedly connected to the upper surface of the filter plate (3). The outer wall of the fixing block (4) is slidably connected to the inner wall of the first oil production pipe (1). A fixing shaft (5) is fixedly connected to the inside of the first oil production pipe (1). A rotating plate (6) is rotatably connected to the outer wall of the fixing shaft (5). A connecting block (8) is fixedly connected to the top end of the rotating plate (6). The outer wall of the connecting block (8) is clamped. A limiting post (9) is connected to the outside of the oil production pipe (1). The outer wall of the limiting post (9) is slidably connected to the inside of the oil production pipe (1). The outer wall of the limiting post (9) is snapped into the inside of the fixing block (4). One end of the spring (7) is fixedly connected to the outer wall of the rotating plate (6). The other end of the spring (7) is fixedly connected to the inside of the oil production pipe (1). A protective shell (24) is snapped into the outer wall of the oil production pipe (1). The protective shell (24) is sleeved on the outside of the rotating plate (6). An extension component is provided on the outer wall of the oil production pipe (1).

2. The waste mineral oil detection and sampling device according to claim 1, characterized in that: The extension assembly includes a second oil production pipe (11), the inner thread of which is connected to the outer wall of the first oil production pipe (1), and a second filter plate (12) is fixedly connected inside the second oil production pipe (11).

3. The waste mineral oil detection and sampling device according to claim 1, characterized in that: The limiting component (10) includes a pull rod (1001), the outer wall of which is slidably connected to the inside of the first oil production pipe (1), the outer wall of which is fixedly connected to a limiting post (1003), the outer wall of which is slidably connected to the inside of the first oil production pipe (1), the outer wall of which is fixedly connected to a baffle (1002), the outer wall of which is slidably connected to the inside of the first oil production pipe (1), the outer wall of which is clamped to the inside of a fixing block (4), and the outer wall of which is sleeved with a spring (1004), one end of which is fixedly connected to the outer wall of the baffle (1002), and the other end of which is fixedly connected to the inside of the first oil production pipe (1).

4. The waste mineral oil detection and sampling device according to claim 1, characterized in that: A support block (13) is fixedly connected to the outer wall of the oil production pipe (1). A vacuum generator (14) is installed inside the support block (13). A funnel (15) is fixedly connected inside the support block (13).

5. The waste mineral oil detection and sampling device according to claim 4, characterized in that: The support block (13) is slidably connected to an oil collecting bottle (16), and the inner wall of the oil collecting bottle (16) is slidably connected to the outer wall of the funnel (15).

6. The waste mineral oil detection and sampling device according to claim 5, characterized in that: A motor (17) is fixedly connected inside the support block (13). A bidirectional threaded rod (18) is fixedly provided at the output end of the motor (17). The outer wall of the bidirectional threaded rod (18) is rotatably connected to the inside of the support block (13). A slider (19) is threadedly connected to the outer wall of the bidirectional threaded rod (18). A clamping block (20) is fixedly connected to the outer wall of the slider (19). The outer wall of the clamping block (20) is slidably connected to the inside of the support block (13). The inner wall of the clamping block (20) is clamped to the outer wall of the oil collecting bottle (16).

7. The waste mineral oil detection and sampling device according to claim 5, characterized in that: The outer wall of the oil production pipe (1) is fixedly connected to a support frame (21), and the outer wall of the support frame (21) is slidably connected to a support plate (23). The lower surface of the oil collection bottle (16) is attached to the upper surface of the support plate (23).

8. The waste mineral oil detection and sampling device according to claim 7, characterized in that: The outer wall of the support frame (21) is fitted with a spring three (22), the top end of the spring three (22) is fixedly connected to the outer wall of the support frame (21), and the bottom end of the spring three (22) is fixedly connected to the upper surface of the support plate (23).

Images