A telescopic sampling rod device for deep liquid level sampling

Abstract

The utility model relates to liquid sampling equipment technical field discloses a telescopic sampling rod device for deep liquid level sampling, include: protective cover, the top is fixed with handle and is passed through, the limit rod is arranged below handle, the top of protective cover is equipped with the stay wire device, and the outer surface of protective cover is coated with anticorrosive coating, gear groove, vertical and set up in the back of protective cover top, L type support frame, horizontal placement, the outer end bottom is provided with the illuminating lamp, telescopic axle no.

Description

Technical Field

[0001] This utility model relates to the field of liquid sampling equipment technology, specifically a telescopic sampling rod device for deep liquid level sampling. Background Technology

[0002] In the field of liquid sampling equipment technology, existing technologies already have relevant solutions for sampling needs in deep liquid levels (such as industrial storage tanks, chemical reactors, and deep wells for environmental monitoring).

[0003] A search revealed existing technology (application number: CN202021249759.0), which describes "a deep-seated slurry sampling device." This utility model includes a sampling rod, with a handle connected to its upper end. The sampling rod has an installation groove, and a second sampling rod is housed within the installation groove. The upper end of the second sampling rod is connected to the handle. The sampling rod has a sampling port on its shaft, with a sampling cup opening above it. The sampling port and the sampling cup opening communicate with the installation groove. The bottom of the second sampling rod has a sampling cup cavity containing a sampling cup, located below the sampling port. This utility model has the advantages of being able to sample slurry at depths below the slurry surface, having a simple structure, convenient operation, high sampling efficiency, enabling vertical positioning sampling, and providing accurate sampling with minimal sample error.

[0004] However, while existing technologies have improved overall simplicity and accuracy, they still have some shortcomings: such as the inability to sample liquids in multiple liquid levels and the inability to quickly disassemble and replace sampling containers. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a telescopic sampling rod device for deep liquid level sampling.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a telescopic sampling rod device for deep liquid level sampling, comprising: a protective cover with a handle fixedly through the top, a non-slip sleeve on the handle, a limit rod fixedly through the bottom of the handle, a pull wire device on the top of the protective cover, an anti-corrosion coating on the outer surface of the protective cover, and scale lines marked on the front of the protective cover; a gear groove vertically formed on the top of the back of the protective cover; an L-shaped support frame, which is L-shaped and horizontally placed, with one end fixed to the middle of the top of the protective cover and a light lamp at the bottom of the other end; a telescopic shaft slidably connected inside the protective cover, with buttons on both sides of the top of the telescopic shaft, a sealing gasket at the connection between the button and the telescopic shaft, one end of the button slidably connected through the bottom of the protective cover, and the button can slide vertically in the grooves formed on both sides of the inner wall of the protective cover, one end of the button sliding in the circular groove formed on the top of the telescopic shaft, a spring inside the button, one end of the spring fixed in the circular groove of the telescopic shaft, and the other end fixed to the inner wall of the button, and an anti-corrosion coating on the outer surface of the telescopic shaft.

[0007] As a further description of the above technical solution:

[0008] There are several sets of fixing rings, placed horizontally, with one set fixed to the bottom front of the protective cover.

[0009] As a further description of the above technical solution:

[0010] A set of fixing rings is fixed to the bottom front of telescopic shaft one, and telescopic shaft two is slidably connected inside telescopic shaft one.

[0011] As a further description of the above technical solution:

[0012] Buttons are provided on both sides of the top of the telescopic shaft two. A sealing gasket is installed at the connection between the button and the telescopic shaft two. The button slides in the grooves opened on both sides of the inner wall of the telescopic shaft one. One end of the button slides through and is connected to the bottom two sides of the telescopic shaft one. The other end slides in the circular groove opened on the top of the telescopic shaft two. A spring is also provided inside the button. One end of the spring is fixed in the circular groove of the telescopic shaft two, and the other end is fixed to the inner wall of the button. The outer surface of the telescopic shaft two is coated with an anti-corrosion coating. A set of fixing rings is fixed in the center of the front of the telescopic shaft two.

[0013] As a further description of the above technical solution:

[0014] The cable pulling device includes: a cylindrical shaft, one end of which is slidably connected to the top of the protective cover, and the other end of which is fixed perpendicularly to a fixed shaft; a gear, which is fixed to the cylindrical shaft at the back of the protective cover, and the gear is slidably connected in a gear groove, with the gear meshing with the gear groove; a rotating handle, which is fixed to the middle of the cylindrical shaft near the gear; and a connecting wire, which is sleeved on the outside of the cylindrical shaft at the front end of the protective cover, with one end of the connecting wire fixed to the cylindrical shaft and the other end slidably passing through several sets of fixed rings.

[0015] As a further description of the above technical solution:

[0016] The telescopic shaft 2 has a base at its bottom, and the telescopic shaft 2 is placed in a groove on the top of the base. A pin is provided on one side of the base, and the pin slides through and connects the bottom of the telescopic shaft 2 to the base, and is fixed by a nut.

[0017] As a further description of the above technical solution:

[0018] A sampling bucket is fixed to the other end of the base. The top of the sampling bucket is connected to a top cover by a hinge. The top cover is fixed by a ring-shaped strong magnet on the top of the sampling bucket. A set of fixing rings is vertically fixed on the top of the top cover. The end of the connecting wire away from the cylindrical shaft can be sleeved and fixed on the fixing rings on the top of the sampling bucket.

[0019] This utility model has the following beneficial effects:

[0020] 1. Enables precise multi-level liquid level sampling: Through the graded extension and retraction adjustment of telescopic shaft one and telescopic shaft two, combined with the scale line of the protective cover, the sampling depth can be accurately measured; the pull line device can pull the top cover to open only when the sampling bucket reaches the target liquid level, avoiding the mixing of liquid above and ensuring the accuracy of sampling at different liquid levels.

[0021] 2. The sampling components are easy to assemble and disassemble and are efficient: The telescopic shaft 2 and the base can be quickly connected and disassembled through pins and nuts, which makes it easy to change the sampling bucket of different specifications according to the sampling needs. At the same time, it is easier to clean after disassembly, thus improving the sampling efficiency in multiple scenarios. Attached Figure Description

[0022] Figure 1 This is a front view of the overall appearance of a telescopic sampling rod device for deep liquid level sampling proposed in this utility model.

[0023] Figure 2 This is a rear view of the overall appearance of a telescopic sampling rod device for deep liquid level sampling proposed in this utility model.

[0024] Figure 3 This is an exploded view of a telescopic sampling rod device for deep liquid level sampling proposed in this utility model;

[0025] Figure 4This is a cross-sectional view of the button proposed in this utility model.

[0026] Legend:

[0027] 1. Protective cover; 111. Button; 112. Spring; 10. Gear groove; 100. Cylindrical shaft; 101. Gear; 102. Rotary handle; 103. Connecting wire; 11. Fixing ring; 2. Limiting rod; 3. Handle; 4. L-shaped support frame; 5. Telescopic shaft one; 6. Telescopic shaft two; 71. Base; 72. Pin; 73. Sampling bucket. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," 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 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 utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The utility model will be further described in detail below with reference to the accompanying drawings.

[0030] 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.

[0031] Example 1:

[0032] like Figures 1 to 4As shown, this embodiment provides a telescopic sampling rod device for deep liquid level sampling, comprising: a protective cover 1, with a handle 3 fixedly fixed through the top, a non-slip sleeve on the handle 3, a limit rod 2 fixedly fixed through the bottom of the handle 3, a pull wire device on the top of the protective cover 1, an anti-corrosion coating on the outer surface of the protective cover 1, and scale lines marked on the front of the protective cover 1; a gear groove 10, vertically formed on the top of the back of the protective cover 1; an L-shaped support frame 4, which is L-shaped, horizontally placed, with one end fixed to the middle of the top of the protective cover 1, and a lighting lamp at the bottom of the other end; and a telescopic shaft 5, slidably connected to the protective cover. Inside the protective cover 1, buttons 111 are provided on both sides of the top of the telescopic shaft 5. A sealing gasket is installed at the connection between the button 111 and the telescopic shaft 5. One end of the button 111 is slidably connected to the bottom of the protective cover 1. The button 111 can slide vertically in the grooves opened on both sides of the inner wall of the protective cover 1. One end of the button 111 slides in the circular groove opened on the top of the telescopic shaft 5. A spring 112 is provided inside the button 111. One end of the spring 112 is fixed in the circular groove of the telescopic shaft 5, and the other end is fixed to the inner wall of the button 111. The outer surface of the telescopic shaft 5 is coated with an anti-corrosion coating.

[0033] In this embodiment, the pull wire device constitutes a telescopic sampling rod device for deep liquid level sampling as described in this application.

[0034] It should also be noted that the telescopic sampling rod device for deep liquid level sampling in this application can be a manual telescopic sampling rod device, an electric telescopic sampling rod device, a pump-suction telescopic sampling rod device, etc. Figure 1 In this embodiment, a telescopic sampling rod device for deep liquid level sampling is described as a manual telescopic sampling rod device. Of course, other types of telescopic sampling rod devices for deep liquid level sampling can also adopt a similar structure, which will not be described in detail below.

[0035] Understandable Figure 1 This illustration only schematically shows some components of a telescopic sampling rod device for deep liquid level sampling. The actual shape, size, position, and construction of these components are not subject to change. Figure 1 Due to limitations, a telescopic sampling rod device for deep liquid level sampling can also include, compared to... Figure 1 More or fewer parts.

[0036] In addition, in this embodiment, the protective cover 1 is made of 304 stainless steel and has a rectangular hollow structure; the handle 3 is cylindrical and the anti-slip sleeve completely covers the outer surface of the handle 3; the limiting rod 2 is made of 304 stainless steel, is cylindrical, and is located directly below the handle 3, and is vertically fixed to the top of the protective cover 1. The L-shaped support frame 4 is made of aluminum alloy and has a rectangular cross-section; the lighting lamp is an LED lamp, fixed at the bottom of the horizontal section of the L-shaped support frame 4 away from the protective cover 1, facing directly downwards; the telescopic shaft 5 is made of 304 stainless steel and its outer diameter matches the inner diameter of the protective cover 1; the grooves on both sides of the inner wall of the protective cover 1 are rectangular and their width matches the diameter of the button 111; the diameter of the circular groove at the top of the telescopic shaft 5 matches the diameter of the button 111. Press the buttons 111 on both sides of the top of the telescopic shaft 5. The spring 112 is compressed, and the buttons 111 retract into the telescopic shaft 5. Push or pull the telescopic shaft 5 into or out of the protective cover 1 to the desired position. Release the buttons 111, the spring 112 returns to its original position, and the buttons 111 pop out and lock into the groove on the inner wall of the protective cover 1, thus fixing the telescopic shaft 5. The hand handle 3 operates the device, and the limit rod 2 limits the maximum depth to which the device enters the liquid. The light on the L-shaped support frame 4 provides illumination when there is insufficient light. The anti-corrosion coating on the outer surface of the protective cover 1 and the telescopic shaft 5 isolates the liquid from corrosion. The scale lines are used to read the liquid level depth. The pull wire device is used to control the subsequent sampling components, realizing the extension and fixation of the telescopic shaft 5 to meet the sampling needs at different depths. The limit rod 2 prevents the hand from contacting the liquid. The light ensures operation in dim environments. The anti-corrosion coating extends the service life of the device. The scale lines ensure that the sampling depth is accurately measurable.

[0037] Specifically, there are several sets of fixing rings 11, which are placed horizontally, with one set fixed to the bottom front of the protective cover 1.

[0038] In this embodiment, the fixing rings 11 are circular in shape, and there are several sets of them. The fixing rings 11 serve as guide components for the connecting wires, providing a fixed path for the connecting wires. This ensures that the connecting wires do not deviate during the pulling process, guaranteeing the stability of subsequent sampling operations.

[0039] Specifically, a set of fixing rings 11 are fixed to the bottom front of telescopic shaft 5, and telescopic shaft 6 is slidably connected inside telescopic shaft 5.

[0040] In a preferred embodiment, the retaining ring 11 at the bottom front of the telescopic shaft 5 is located perpendicular to the axis of the telescopic shaft 5 and has the same specifications as the retaining ring 11 on the protective cover 1. The telescopic shaft 6 is made of 304 stainless steel, is cylindrical, and its outer diameter matches the inner diameter of the telescopic shaft 5, allowing it to be completely retracted into the telescopic shaft 5. The telescopic shaft 6 can slide inside the telescopic shaft 5, enabling secondary adjustment of the overall sampling rod length in conjunction with the telescopic shaft 5. This further extends the overall length of the sampling rod, meeting the sampling needs at deeper liquid levels.

[0041] Example 2:

[0042] Based on Example 1, in order to facilitate the sampling and protection of the liquid, a pull wire device is provided on the top of the protective cover 1;

[0043] Specifically, buttons 111 are provided on both sides of the top of the telescopic shaft 2 6. A sealing gasket is installed at the connection between the button 111 and the telescopic shaft 2 6. The button 111 slides in the grooves opened on both sides of the inner wall of the telescopic shaft 1 5. One end of the button 111 is slidably connected to the bottom two sides of the telescopic shaft 1 5, and the other end slides in the circular groove opened on the top of the telescopic shaft 2 6. A spring 112 is provided inside the button 111. One end of the spring 112 is fixed in the circular groove of the telescopic shaft 2 6, and the other end is fixed to the inner wall of the button 111. The outer surface of the telescopic shaft 2 6 is coated with an anti-corrosion coating. A set of fixing rings 11 is fixed in the center of the front of the telescopic shaft 2 6.

[0044] In this embodiment, the buttons 111 on both sides of the top of the telescopic shaft 2 6 have the same specifications as the buttons 111 on the telescopic shaft 1 5; the grooves on both sides of the inner wall of the telescopic shaft 1 5 are rectangular, and their width matches the diameter of the buttons 111; the diameter of the circular groove at the top of the telescopic shaft 2 6 matches the diameter of the buttons 111. The fixing ring 11 in the center of the front of the telescopic shaft 2 6 is located at the center of the central axis of the front of the telescopic shaft 2 6. Pressing the buttons 111 on both sides of the top of the telescopic shaft 2 6 compresses the spring 112, and the buttons 111 retract into the telescopic shaft 2 6, pushing or pulling the telescopic shaft 2 6 into or out of the telescopic shaft 1 5 to the desired position. Releasing the buttons 111 resets the spring 112, and the buttons 111 pop out and lock into the grooves on the inner wall of the telescopic shaft 1 5, thus fixing the telescopic shaft 2 6; the fixing ring 11 continues to provide guidance for the connecting wire. This achieves the extension and fixation of the telescopic shaft 2 6, further expanding the sampling depth range; the anti-corrosion coating protects the telescopic shaft 2 6 from liquid corrosion; the fixing ring 11 ensures stable guidance of the connecting wire.

[0045] Specifically, the cable pulling device includes: a cylindrical shaft 100, one end of which is slidably connected to the top of the protective cover 1, and the other end of which is fixed to a fixed shaft perpendicularly to the cylindrical shaft 100; a gear 101, which is fixed to the cylindrical shaft 100 at the back of the protective cover 1, and the gear 101 is slidably connected in the gear groove 10, and the gear 101 meshes with the gear groove 10; a rotating handle 102, which is fixed to the middle of the cylindrical shaft 100 near the end of the gear 101; and a connecting wire 103, which is sleeved on the outside of the cylindrical shaft 100 at the front end of the protective cover 1, and one end of the connecting wire 103 is fixed to the cylindrical shaft 100, and the other end can slide through several sets of fixed rings 11.

[0046] In this configuration, the cylindrical shaft 100 is made of 304 stainless steel; the fixed shaft is cylindrical and vertically fixed to one end of the cylindrical shaft 100; the gear 101 is fixed to the cylindrical shaft 100 near the back of the protective cover 1, coaxial with the cylindrical shaft 100. The depth of the gear groove 10 matches the thickness of the gear 101, and the inner wall has teeth that mesh with the gear 101. The rotating handle 102 is cylindrical and fixed to the middle of the cylindrical shaft 100 near the end of the gear 101, perpendicular to the cylindrical shaft 100. The connecting wire 103, with a length set according to the maximum extension length of the sampling rod, is sleeved on the outside of the cylindrical shaft 100 at the front end of the protective cover 1, and wound several times. Pulling the rotating handle 102 outwards moves the cylindrical shaft 100 and gear 101, disengaging gear 101 from gear groove 10. Rotating the rotating handle 102 rotates the cylindrical shaft 100, winding or releasing the connecting wire 103. After adjustment, pushing the rotating handle 102 re-engages gear 101 into gear groove 10, fixing the cylindrical shaft 100. The meshing of gear 101 with gear groove 10 enables precise adjustment and fixation of the connecting wire 103, ensuring stable control of the sampling component.

[0047] Example 3:

[0048] Based on Example 2, in order to facilitate the replacement of sampling buckets 73 of different sizes, a base 71 is provided at the bottom of the telescopic shaft 6.

[0049] Specifically, the telescopic shaft 2 6 has a base 71 at its bottom, and the telescopic shaft 2 6 is placed in a groove on the top of the base 71. A pin 72 is provided on one side of the base 71. The pin 72 slides through and connects the bottom of the telescopic shaft 2 6 to the base 71, and is fixed by a nut.

[0050] The base 71 has a rectangular parallelepiped structure, with a top groove that matches the diameter and width of the telescopic shaft 6. The pin 72 is cylindrical, and the nut is threaded into it. The bottom of the telescopic shaft 6 is inserted into the top groove of the base 71, aligning it with the through hole in the base 71. The pin 72 is then inserted, and the nut is screwed onto the end of the pin 72 that extends out of the base 71, securing the telescopic shaft 6 to the base 71. For disassembly, the nut is unscrewed, and the pin 72 is pulled out to separate the telescopic shaft 6 from the base 71. This allows for quick installation and removal of the base 71 and the telescopic shaft 6, facilitating the replacement and cleaning of the sampling components.

[0051] Specifically, a sampling bucket 73 is fixed to the other end of the base 71. A top cover is connected to the top of the sampling bucket 73 by a hinge. The top cover is fixed by a ring-shaped strong magnet at the top of the sampling bucket 73. A set of fixing rings 11 is vertically fixed to the top of the top cover. The end of the connecting line 103 away from the cylindrical shaft 100 can be sleeved and fixed on the fixing rings 11 at the top of the sampling bucket 73.

[0052] In this embodiment, the sampling bucket 73 is cylindrical and fixed to the end of the base 71 away from the telescopic shaft 6. The diameter of the top cover is adapted to the outer diameter of the sampling bucket 73. The fixing ring 11 at the top of the sampling bucket 73 has the same specifications as the other fixing rings 11 and is vertically fixed to the central axis of the top of the top cover. The end of the connecting line 103 away from the cylindrical shaft 100 can be fixed to the fixing ring 11 at the top of the sampling bucket 73. The sampling bucket 73 is connected to the telescopic shaft 6 through the base 71, and the top cover is connected to the sampling bucket 73 through a hinge. Under normal conditions, the top cover is attracted to the annular strong magnet at the top of the sampling bucket 73, sealing the sampling bucket 73. Pulling the connecting line 103 causes the top cover to rotate around the hinge, opening the sampling bucket 73 for sampling. Releasing the connecting line 103 causes the top cover to close under the action of gravity and the strong magnet, sealing the sampling bucket 73. The sampling container 73 is sealed and opened to ensure that the liquid does not leak or mix during the sampling process, thereby improving the sampling accuracy; the fixing ring 11 ensures that the connecting line 103 effectively controls the top cover.

[0053] In actual use, the user places the bottom of the telescopic shaft 6 into the circular groove at the top of the base 71, inserts the pin 72, and secures it with a nut. This design allows for quick replacement of the sampling container as needed. One end of the connecting wire 103 is fitted and fixed in the button 111 on the top of the sampling container 73, and the other end is wrapped around and fixed to the cylindrical shaft 100. Then, according to the required depth of the liquid, the telescopic shaft 5 and the telescopic shaft 6 are pulled out until the button 111 pops out and is fixed. The light on the L-shaped support frame 4 is turned on, and the handle 3 is held to insert the device into the liquid. The design of the limiting rod 2 can limit the maximum depth of the entire device to enter, preventing the handle 3 from entering the liquid and harming the user's skin. When the sampling container 73 reaches the liquid to be sampled, the user holds and pulls the rotating handle 102 outward. At this time, the gear 101 disengages from the gear groove 10 and rotates. The handle 102 and cylindrical shaft 100 rotate together, causing the connecting line 103 on the cylindrical shaft 100 to contract until the top of the sampling bucket 73 is opened. Then, the gear 101 is re-engaged into the gear groove 10 for easy sampling. This design can prevent the liquid above from entering the sampling bucket 73 and affecting the measurement when multiple layers of liquid are involved. After sampling, the handle 102 is rotated in the opposite direction to loosen the connecting line 103, close the top of the sampling bucket 73, and remove the device. The scale lines on the protective cover 1 allow the user to easily record the depth of the liquid level. The light on the L-shaped support frame 4 provides illumination for sampling. Then, the buttons 111 on the top of the telescopic shaft 2 6 and the telescopic shaft 1 5 are pressed respectively. The spring 112 is contracted and drives the button 111 to retract into its housing. Then, it is tied with a rope for storage, effectively saving space.

[0054] 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 telescopic sampling rod device for deep liquid level sampling, characterized in that: include: The protective cover (1) has a handle (3) fixed through the top, and a non-slip sleeve is fitted on the handle (3). A limit rod (2) is fixed through the bottom of the handle (3). A pull wire device is provided on the top of the protective cover (1). The outer surface of the protective cover (1) is coated with an anti-corrosion coating, and the front of the protective cover (1) is marked with scale lines. Gear groove (10) is vertically opened on the top of the back of the protective cover (1); The L-shaped support frame (4) is L-shaped and placed horizontally. One end is fixed to the top center of the protective cover (1), and the other end is equipped with a lighting lamp at the bottom. Telescopic shaft 1 (5) is slidably connected inside the protective cover (1), and buttons (111) are respectively provided on both sides of the top of telescopic shaft 1 (5). A sealing gasket is installed at the connection between the button (111) and telescopic shaft 1 (5). One end of the button (111) is slidably connected through the bottom sides of the protective cover (1), and the button (111) can slide vertically in the grooves opened on both sides of the inner wall of the protective cover (1). One end of the button (111) slides in the circular groove opened at the top of the telescopic shaft 1 (5). A spring (112) is provided inside the button (111), and one end of the spring (112) is fixed in the circular groove of the telescopic shaft 1 (5), and the other end is fixed to the inner wall of the button (111). The outer surface of the telescopic shaft 1 (5) is coated with an anti-corrosion coating.

2. The telescopic sampling rod device for deep liquid level sampling according to claim 1, characterized in that: There are several sets of fixing rings (11), which are placed horizontally, and one set is fixed to the bottom front of the protective cover (1).

3. The telescopic sampling rod device for deep liquid level sampling according to claim 2, characterized in that: A set of fixing rings (11) is fixed to the bottom front of telescopic shaft one (5), and telescopic shaft two (6) is slidably connected inside telescopic shaft one (5).

4. A telescopic sampling rod device for deep liquid level sampling according to claim 3, characterized in that: Buttons (111) are provided on both sides of the top of the telescopic shaft 2 (6). A sealing gasket is installed at the connection between the button (111) and the telescopic shaft 2 (6). The button (111) slides in the grooves opened on both sides of the inner wall of the telescopic shaft 1 (5). One end of the button (111) is slidably connected to the bottom sides of the telescopic shaft 1 (5) respectively. The other end slides in the circular groove opened at the top of the telescopic shaft 2 (6). A spring (112) is provided inside the button (111). One end of the spring (112) is fixed in the circular groove of the telescopic shaft 2 (6), and the other end is fixed to the inner wall of the button (111). The outer surface of the telescopic shaft 2 (6) is coated with an anti-corrosion coating. A set of fixing rings (11) is fixed in the middle of the front of the telescopic shaft 2 (6).

5. A telescopic sampling rod device for deep liquid level sampling according to claim 4, characterized in that: The cable pulling device includes: a cylindrical shaft (100), one end of which is slidably connected to the top of the protective cover (1), and the other end of which is fixed to a fixed shaft perpendicularly to the cylindrical shaft (100); Gear (101) is fixed on the cylindrical shaft (100) at the back of the protective cover (1), and gear (101) is slidably connected in the gear groove (10), and gear (101) meshes with gear groove (10); Rotary handle (102) is fixed to the middle of one end of cylindrical shaft (100) near gear (101); The connecting wire (103) is sleeved on the outside of the cylindrical shaft (100) located at the front end of the protective cover (1), and one end of the connecting wire (103) is fixed on the cylindrical shaft (100), while the other end can slide through several sets of fixing rings (11).

6. A telescopic sampling rod device for deep liquid level sampling according to claim 5, characterized in that: The telescopic shaft 2 (6) is provided with a base (71) at its bottom, and the telescopic shaft 2 (6) is placed in a groove on the top of the base (71). A pin (72) is provided on one side of the base (71), and the pin (72) slides through and connects the bottom of the telescopic shaft 2 (6) and the base (71), and is fixed by a nut.

7. A telescopic sampling rod device for deep liquid level sampling according to claim 6, characterized in that: A sampling bucket (73) is fixed at the other end of the base (71). The top of the sampling bucket (73) is connected to a top cover by a hinge. The top cover is fixed by a ring-shaped strong magnet at the top of the sampling bucket (73). A set of fixing rings (11) is vertically fixed at the top of the top cover. The end of the connecting line (103) away from the cylindrical shaft (100) can be sleeved and fixed on the fixing rings (11) at the top of the sampling bucket (73).

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