Water taking device for geological survey

Abstract

The utility model relates to the technical field of geological survey, and discloses a water taking device for geological survey, which comprises a support frame, a first cylinder, a spline housing, a hollow spline shaft, a second cylinder, a sealing plate, a filter cartridge, a spiral blade, a water pump and a rotary joint. During use, after the first cylinder is driven by external force to rotate, the spiral blade and the sealing plate can be driven to rotate synchronously. And then after the supporting frame is driven by external force to descend, the first cylinder can be driven to drill into the ground. And then the hollow spline shaft slides under the driving of external force, and finally drives the sealing plate to open the lower port of the first cylinder and drives the filter cartridge to move out of the lower port of the first cylinder. And finally, the water pump is controlled to work to complete water taking work. Moreover, in the process of drilling into the ground, the lower end opening of the first cylinder is always in a blocked state, so that soil, sandy soil and the like are prevented from entering the internal cavity. Meanwhile, the filter cartridge is not in direct contact with soil, sandy soil and the like, so that blockage, abrasion and damage are reduced.

Description

Technical Field

[0001] This application relates to the field of geological survey technology, and in particular to a water intake device for geological surveys. Background Technology

[0002] A related technology (publication number: CN222529013U) discloses an automatic groundwater monitoring and sampling device, including a sampling drill pipe, a sealing cover, and a sampling pump. The sampling drill pipe has a water inlet channel at its bottom and a cavity for storing water samples inside, with the water inlet channel communicating with the cavity. The sealing cover is detachably mounted on the top of the sampling drill pipe and seals the end of the pipe. The sampling pump is detachably mounted on the side wall of the sampling drill pipe, and a sampling tube is provided at the pump inlet, passing through the sealing cover and extending to the bottom surface of the sampling drill pipe.

[0003] In the process of implementing the technical solution disclosed herein, at least the following problems were found in the related technologies:

[0004] This automatic groundwater monitoring and sampling device draws groundwater by creating negative pressure within the sampling drill pipe. It can actively collect and sample groundwater even when groundwater levels are low, thus improving sampling efficiency. However, during drilling, soil and gravel can easily enter the cavity through the inlet channel, causing contamination. Even with a filter screen at the outer end of the inlet channel, the screen is prone to clogging, wear, and damage due to direct contact with soil and gravel during drilling.

[0005] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this application, and therefore may include information that does not constitute prior art known to those skilled in the art. Utility Model Content

[0006] To provide a basic understanding of some aspects of the disclosed technical solutions, a brief summary is given below. This summary is not a general commentary, nor is it intended to identify key / important components or describe the scope of protection of these technical solutions, but rather serves as an introduction to the detailed explanations that follow.

[0007] This disclosure provides a water intake device for geological surveys to solve the problems mentioned in the background section.

[0008] In some technical solutions, a water intake device for geological surveys includes: a support frame; a first cylinder rotatably inserted through the bottom wall of the support frame; a spline sleeve installed at the top of the first cylinder and coaxially distributed with the first cylinder; a hollow spline shaft slidably inserted through the spline sleeve and coaxially distributed with the first cylinder; a second cylinder connected to the bottom surface of the hollow spline shaft and coaxially distributed with the first cylinder, the second cylinder including a plurality of through holes at its bottom end; and a sealing plate installed at the bottom of the second cylinder. The first cylinder has a bottom surface that abuts against the bottom surface of the first cylinder; a filter cylinder is fitted onto the second cylinder, fitting against the inner wall of the first cylinder, and located between the sealing plate and the plurality of through holes; a spiral blade is connected to the outer wall of the first cylinder; a water pump has its inlet facing the top end of the hollow spline shaft; a rotary joint is installed between the top end of the hollow spline shaft and the inlet of the water pump; wherein the first cylinder can be controlled to rotate to drive the spiral blade to rotate, and the spline shaft can be controlled to slide to drive the sealing plate to move.

[0009] Optionally, it further includes: a support plate for connecting to the trolley; a first hydraulic cylinder mounted on the support plate along the axial direction of the first cylinder; wherein the support frame is mounted on the moving end of the first hydraulic cylinder.

[0010] Optionally, it further includes: a guide rail, mounted on the support plate along the axial direction of the first cylinder; and a slider, slidably mounted on the guide rail and connected to the support frame.

[0011] Optionally, it further includes: a motor, mounted on the top wall of the support frame and located inside the support frame; a driving pulley, mounted on the rotating end of the motor; a driven pulley, mounted on the outer wall of the first cylinder; and a belt, fitted between the driving pulley and the driven pulley.

[0012] Optionally, it further includes: a second hydraulic cylinder, installed on the top wall of the support frame, with the moving end of the second hydraulic cylinder facing the bottom wall of the support frame; a movable plate, installed on the moving end of the second hydraulic cylinder and fitted onto the hollow spline shaft; a first bearing, installed between the movable plate and the hollow spline shaft; wherein the water pump is installed on the top surface of the movable plate.

[0013] Optionally, it further includes: a retaining ring fitted onto the outer wall of the second cylinder; wherein the filter cylinder is clamped between the retaining ring and the sealing plate.

[0014] Optionally, it also includes a water supply pipe connected to the drain outlet of the water pump.

[0015] Optionally, the first cylinder includes a plurality of first cylinder bodies connected end to end in sequence, and the connection between two adjacent first cylinder bodies includes a first flange, and two adjacent first flanges are detachably installed; wherein, the topmost first cylinder is rotatably inserted through the bottom wall of the support frame.

[0016] Optionally, the second cylinder includes a plurality of second cylinder bodies connected end to end in sequence, and the connection between two adjacent second cylinder bodies includes a second flange, which can be detachably installed between two adjacent second flanges; wherein, the plurality of through holes are located in the bottommost second cylinder.

[0017] The water intake device for geological surveys provided in this disclosure can achieve the following technical effects:

[0018] This disclosure provides a water intake device for geological surveys, comprising a support frame, a first cylinder, a spline sleeve, a hollow spline shaft, a second cylinder, a sealing plate, a filter cylinder, spiral blades, a water pump, and a rotary joint. The first cylinder is rotatably mounted through the bottom wall of the support frame, allowing it to rotate relative to the bottom wall. The spline sleeve is mounted on the top of the first cylinder and coaxially distributed with it, used to transmit torque. The hollow spline shaft is slidably mounted through the spline sleeve and coaxially distributed with it, allowing it to slide relative to the spline sleeve and drive the spline sleeve to rotate. The second cylinder is connected to the bottom surface of the hollow spline shaft and coaxially distributed with the first cylinder. The second cylinder includes multiple through holes at its bottom end for groundwater to pass through, allowing groundwater to enter the second cylinder. The sealing plate is mounted on the bottom surface of the second cylinder and abuts against the bottom surface of the first cylinder, used to seal the bottom end of the first cylinder. A filter cartridge is fitted onto the second cylinder, fitting snugly against the inner wall of the first cylinder and positioned between the sealing plate and multiple through holes. It filters out soil, sand, and other impurities from the groundwater. A helical blade is connected to the outer wall of the first cylinder, facilitating drilling into the ground. The pump's inlet is opposite the top of the hollow splined shaft, used to transport groundwater. A rotary joint is installed between the top of the hollow splined shaft and the pump's inlet, used to transfer groundwater from the rotating pipeline to the stationary pipeline. The first cylinder can be rotated in a controlled manner to drive the helical blade, and the splined shaft can be slid in a controlled manner to move the sealing plate.

[0019] In operation, the first cylinder rotates under external force, which in turn drives the helical blades to rotate. This, in turn, drives the splined sleeve to rotate, which in turn drives the hollow splined shaft to rotate. This, in turn, drives the second cylinder to rotate, ultimately causing the sealing plate to rotate synchronously. Then, the support frame descends under external force, driving the first cylinder to drill into the ground. The hollow splined shaft then slides under external force, moving the second cylinder and ultimately causing the sealing plate to open the lower port of the first cylinder, allowing the filter cartridge to move out from the lower port. Groundwater then passes through the filter cartridge and enters the interior of the first cylinder. It then flows through multiple through-holes into the interior of the second cylinder. Finally, the water pump is activated, and the groundwater is sequentially drawn through the hollow splined shaft and rotary joint to the pump and discharged, completing the water extraction process. Furthermore, during the drilling process, the lower port of the first cylinder remains sealed, preventing soil and sand from entering the internal chamber. Simultaneously, the filter cartridge does not directly contact the soil and sand, reducing clogging, wear, and damage.

[0020] The above general description and the description below are exemplary and illustrative only and are not intended to limit this application. Attached Figure Description

[0021] One or more embodiments are illustrated by way of example with reference to the accompanying drawings. These illustrations and drawings do not constitute a limitation on the embodiments. Elements having the same reference numerals in the drawings are shown as similar elements. The drawings are not to be scaled. And wherein:

[0022] Figure 1 This is a cross-sectional structural schematic diagram of a water intake device for geological surveys provided in an embodiment of this disclosure;

[0023] Figure 2 yes Figure 1 Enlarged structural diagram at point A;

[0024] Figure 3 yes Figure 1 Enlarged structural diagram at point B;

[0025] Figure 4 This is a schematic diagram of the main structure of a water intake device for geological surveys provided in an embodiment of this disclosure;

[0026] Figure 5 yes Figure 4 A magnified structural diagram at point C.

[0027] Figure label:

[0028] 1. Support frame; 2. First cylinder; 3. Spline sleeve; 4. Hollow spline shaft; 5. Second cylinder; 6. Sealing plate; 7. Filter cylinder; 8. Helical blade; 9. Water pump; 10. Rotary joint; 11. Support plate; 12. First hydraulic cylinder; 13. Trolley; 14. Guide rail; 15. Slider; 16. Motor; 17. Belt; 18. Second hydraulic cylinder; 19. Moving plate; 20. First bearing; 21. Fixing ring; 22. Water supply pipe. Detailed Implementation

[0029] To provide a more detailed understanding of the features and technical content of the embodiments of this disclosure, the implementation of the embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. The accompanying drawings are for illustrative purposes only and are not intended to limit the embodiments of this disclosure. In the following technical description, for ease of explanation, several details are used to provide a full understanding of the disclosed embodiments. However, one or more embodiments may still be implemented without these details. In other cases, well-known structures and devices may be simplified in their depiction to simplify the drawings.

[0030] The terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this disclosure are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this disclosure described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0031] In this disclosure, the terms "upper," "lower," "inner," "middle," "outer," "front," and "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for better describing the embodiments of this disclosure and their implementations, and are not intended to limit the indicated devices, elements, or components to having a specific orientation, or to require them to be constructed and operated in a specific orientation. Furthermore, some of the aforementioned terms may be used to indicate other meanings besides orientation or positional relationship; for example, the term "upper" may in some cases indicate a dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this disclosure according to the specific circumstances.

[0032] Furthermore, the terms "set up," "connect," and "fix" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this disclosure according to the specific circumstances.

[0033] Unless otherwise stated, the term "multiple" means two or more.

[0034] In this embodiment of the disclosure, the character " / " indicates that the objects before and after it are in an "or" relationship. For example, A / B means: A or B.

[0035] The term "and / or" describes an association between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or A and B.

[0036] It should be noted that, unless otherwise specified, the embodiments and features described in the present disclosure can be combined with each other.

[0037] Combination Figures 1 to 5 As shown, this embodiment of the present disclosure provides a water intake device for geological surveys, including a support frame 1, a first cylinder 2, a spline sleeve 3, a hollow spline shaft 4, a second cylinder 5, a sealing plate 6, a filter cylinder 7, a spiral blade 8, a water pump 9, and a rotary joint 10. The first cylinder 2 is rotatably inserted through the bottom wall of the support frame 1, allowing it to rotate relative to the bottom wall of the support frame 1. The spline sleeve 3 is installed at the top of the first cylinder 2 and is coaxially distributed with the first cylinder 2, used to transmit torque. The hollow spline shaft 4 is slidably inserted through the spline sleeve 3 and is coaxially distributed with the first cylinder 2, allowing it to slide relative to the spline sleeve 3 and drive the spline sleeve 3 to rotate. The second cylinder 5 is connected to the bottom surface of the hollow spline shaft 4 and is coaxially distributed with the first cylinder 2. The second cylinder 5 includes multiple through holes located at its bottom end, which are used to allow groundwater to pass through, enabling groundwater to enter the second cylinder 5. A sealing plate 6 is installed on the bottom surface of the second cylinder 5 and abuts against the bottom surface of the first cylinder 2, used to seal the bottom end of the first cylinder 2. A filter cylinder 7 is fitted onto the second cylinder 5, fitting against the inner wall of the first cylinder 2, and located between the sealing plate 6 and multiple through holes, used to filter out soil, sand, and other impurities from the groundwater. A spiral blade 8 is connected to the outer wall of the first cylinder 2, facilitating drilling into the ground. The water pump 9's inlet is opposite to the top end of the hollow spline shaft 4, used to transport groundwater. A rotary joint 10 is installed between the top end of the hollow spline shaft 4 and the water pump 9, used to input groundwater from the rotating pipeline to the stationary pipeline. The first cylinder 2 can be rotated in a controlled manner to drive the spiral blade 8 to rotate, and the spline shaft can be slid in a controlled manner to move the sealing plate 6.

[0038] This embodiment of the invention provides a water intake device for geological surveys. A first cylinder 2, driven by an external force, rotates, causing the spiral blades 8 to rotate. Simultaneously, this rotates the spline sleeve 3, which in turn rotates the hollow spline shaft 4. This, in turn, rotates the second cylinder 5, ultimately causing the sealing plate 6 to rotate synchronously. Subsequently, the support frame descends under external force, causing the first cylinder 2 to drill into the ground. Then, the hollow spline shaft 4 slides under external force, moving the second cylinder 5 and ultimately causing the sealing plate 6 to open the lower port of the first cylinder 2, and causing the filter cylinder 7 to move out from the lower port of the first cylinder 2. At this point, groundwater passes through the filter cylinder 7 and enters the interior of the first cylinder 2. Then, through multiple through-holes, it enters the interior of the second cylinder 5. Finally, the water pump 9 is activated, and the groundwater is sequentially drawn through the hollow spline shaft 4 and the rotary joint 10 to the water pump 9 and discharged, completing the water intake process. Furthermore, during the drilling process, the lower end of the first cylinder 2 remains sealed, thus preventing soil and sand from entering the internal chamber. Simultaneously, the filter cylinder 7 does not directly contact the soil and sand, thereby reducing clogging, wear, and damage.

[0039] Optionally, combined Figure 1 , Figure 2 Figure 4 and Figure 5 As shown, it also includes a support plate 11 and a first hydraulic cylinder 12. The support plate 11 is connected to the trolley 13 and moves under the drive of the trolley 13, supporting the installation of the first hydraulic cylinder 12. The first hydraulic cylinder 12 is installed on the support plate 11 along the axial direction of the first cylinder 2, providing driving force to achieve lifting operation. The support frame 1 is installed at the moving end of the first hydraulic cylinder 12 and moves under the drive of the first hydraulic cylinder 12.

[0040] In this embodiment, the first hydraulic cylinder 12 is controlled to operate, which in turn moves the first support frame 1 up and down. Ultimately, this moves the first cylinder 2 up and down, allowing it to automatically insert into or remove from the ground.

[0041] Optionally, combined Figure 1 , Figure 2 Figure 4 and Figure 5 As shown, it also includes a guide rail 14 and a slider 15. The guide rail 14 is mounted on the support plate 11 along the axial direction of the first cylinder 2. The slider 15 is slidably mounted on the guide rail 14 and connected to the support frame 1.

[0042] In this embodiment, the guide rail 14 and the slider 15 serve as guide supports to improve the stability of the support frame 1 during movement and reduce the radial force on the moving end of the first hydraulic cylinder 12.

[0043] Optionally, combined Figure 1 , Figure 2 Figure 4 and Figure 5 As shown, the system also includes a motor 16, a drive pulley, a driven pulley, and a belt 17. The motor 16 is mounted on the top wall of the support frame 1 and located inside the support frame 1, providing driving force to achieve the rotational motion function. The drive pulley is mounted on the rotating end of the motor 16 and rotates under the drive of the motor 16. The driven pulley is mounted on the outer wall of the first cylinder 2 and drives the first cylinder 2 to rotate. The belt 17 is fitted between the drive pulley and the driven pulley to transmit driving force.

[0044] In this embodiment, controlling the motor 16 to operate drives the drive pulley to rotate. The belt 17 then drives the driven pulley to rotate, ultimately achieving the function of automatic rotation of the first cylinder 2.

[0045] Optionally, combined Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, the system also includes a second hydraulic cylinder 18, a movable plate 19, and a first bearing 20. The second hydraulic cylinder 18 is mounted on the top wall of the support frame 1, with its movable end facing the bottom wall of the support frame 1, providing driving force to achieve linear movement. The movable plate 19 is mounted on the movable end of the second hydraulic cylinder 18 and fitted onto the hollow spline shaft 4. It moves under the drive of the second hydraulic cylinder 18, thus moving the hollow spline shaft 4. The first bearing 20 is installed between the movable plate 19 and the hollow spline shaft 4, enabling the hollow spline shaft 4 to rotate relative to the movable plate 19 and to slide under the drive of the movable plate 19. A water pump 9 is mounted on the top surface of the movable plate 19.

[0046] In this embodiment, controlling the second hydraulic cylinder 18 to operate will drive the moving plate 19 to move, which in turn drives the hollow shaft to slide. This then drives the second cylinder 5 to move, ultimately causing the sealing plate 6 to automatically open or seal the lower port of the first cylinder 2.

[0047] Optionally, combined Figure 1 , Figure 2 Figure 4 and Figure 5 As shown, it also includes a bearing housing and a second bearing. The bearing housing is installed on the bottom wall of the support frame 1 and is sleeved on the first cylinder 2. The second bearing is installed between the bearing housing and the first cylinder 2.

[0048] In this embodiment, after the bearing housing is installed on the bottom wall of the support frame 1, it is used to support the second bearing and limit its position. The second bearing is used to support the first cylinder 2, reduce the frictional force on the first cylinder 2, and improve the rotational accuracy of the first cylinder 2.

[0049] Optionally, combined Figure 1 , Figure 3and Figure 4 As shown, it also includes a tapered drill. The tapered drill is mounted on the bottom surface of the sealing plate 6.

[0050] In this embodiment of the disclosure, a conical drill is used to break the soil so that the first cylinder 2 can be inserted into the ground and the sealing plate 6 can open the lower port of the first cylinder 2.

[0051] Optionally, combined Figure 1 and Figure 3 As shown, it also includes a retaining ring 21. The retaining ring 21 is fitted onto the outer wall of the second cylinder 5. The filter cylinder 7 is held between the retaining ring 21 and the sealing plate 6.

[0052] In this embodiment, the retaining ring 21 is used to limit movement to prevent the filter cartridge 7 from moving axially.

[0053] Optionally, combined Figure 1 , Figure 2 Figure 4 and Figure 5 As shown, it also includes a water supply pipe 22. The water supply pipe 22 is connected to the drain outlet of the water pump 9.

[0054] In this embodiment of the disclosure, the water pipe 22 is used to transport groundwater discharged from the water pump 9 in order to facilitate the collection of groundwater.

[0055] Optionally, combined Figures 1 to 5 As shown, the first cylinder 2 includes multiple first cylinder bodies connected end to end in sequence. The connection between any two adjacent first cylinder bodies includes a first flange, and the two adjacent first flanges are detachably installed. The topmost first cylinder 2 is rotatably inserted through the bottom wall of the support frame 1.

[0056] In this embodiment of the disclosure, during the drilling process, the overall length of the first cylinder 2 can be increased by continuously installing a new first cylinder, ultimately enabling drilling into a deeper part of the ground.

[0057] Optionally, combined Figures 1 to 5 As shown, the second cylinder 5 comprises multiple second cylinder bodies connected end to end in sequence. Each connection between two adjacent second cylinder bodies includes a second flange, and adjacent second flanges are detachably mounted. Multiple through holes are located in the bottommost second cylinder 5.

[0058] In this embodiment of the disclosure, during the drilling process, the overall length of the second cylinder 5 can be increased by continuously installing a new second cylinder, ultimately enabling water to be extracted from deeper underground.

[0059] The foregoing description and accompanying drawings have fully illustrated embodiments of this disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The embodiments represent only possible variations. Individual components and functions are optional unless explicitly required, and the order of operation may vary. Parts and features of some embodiments may be included or substituted for parts and features of other embodiments. Embodiments of this disclosure are not limited to the structures described above and shown in the accompanying drawings, and various modifications and changes may be made without departing from its scope. The scope of this disclosure is limited only by the appended claims.

Claims

1. A water intake device for geological surveys, characterized in that, include: Support frame; The first cylinder is rotatably inserted through the bottom wall of the support frame; The spline sleeve is installed at the top of the first cylinder and is distributed coaxially with the first cylinder; A hollow spline shaft is slidably inserted through the spline sleeve and is coaxially distributed with the first cylinder; The second cylinder is connected to the bottom surface of the hollow spline shaft and is coaxially distributed with the first cylinder. The second cylinder includes a plurality of through holes located at its bottom end. A sealing plate is installed on the bottom surface of the second cylinder and abuts against the bottom surface of the first cylinder; The filter cartridge is fitted onto the second cylinder, fits against the inner wall of the first cylinder, and is located between the sealing plate and the plurality of through holes; Helical blades are connected to the outer wall of the first cylinder; A water pump, wherein the pump's inlet is opposite to the top end of the hollow spline shaft; A rotary joint is installed between the top of the hollow spline shaft and the water pump's inlet. The first cylinder can be rotated in a controlled manner to drive the spiral blades to rotate, and the spline shaft can be slid in a controlled manner to drive the sealing plate to move.

2. The water intake device for geological surveys according to claim 1, characterized in that, Also includes: Support plate, used to connect to the trolley; The first hydraulic cylinder is mounted on the support plate along the axial direction of the first cylinder; The support frame is installed on the moving end of the first hydraulic cylinder.

3. A water intake device for geological surveys according to claim 2, characterized in that, Also includes: A guide rail is mounted on the support plate along the axial direction of the first cylinder; The slider is slidably mounted on the guide rail and connected to the support frame.

4. A water intake device for geological surveys according to claim 1, characterized in that, Also includes: The motor is mounted on the top wall of the support frame and located inside the support frame; An active pulley is installed on the rotating end of the motor; The driven pulley is installed on the outer wall of the first cylinder; A belt is fitted between the driving pulley and the driven pulley.

5. A water intake device for geological surveys according to claim 1, characterized in that, Also includes: The second hydraulic cylinder is installed on the top wall of the support frame, with the moving end of the second hydraulic cylinder facing the bottom wall of the support frame; A movable plate is installed at the movable end of the second hydraulic cylinder and fitted onto the hollow spline shaft; A first bearing is installed between the movable plate and the hollow spline shaft; The water pump is installed on the top surface of the movable plate.

6. A water intake device for geological surveys according to claim 1, characterized in that, Also includes: A retaining ring is fitted onto the outer wall of the second cylinder; The filter cartridge is held between the fixing ring and the sealing plate.

7. A water intake device for geological surveys according to claim 1, characterized in that, Also includes: The water supply pipe is connected to the drain outlet of the water pump.

8. A water intake device for geological surveys according to any one of claims 1 to 7, characterized in that: The first cylinder includes a plurality of first cylinder bodies connected end to end in sequence. The connection between two adjacent first cylinder bodies includes a first flange, and two adjacent first flanges can be detachably installed. The topmost first cylinder is rotatably inserted through the bottom wall of the support frame.

9. A water intake device for geological surveys according to any one of claims 1 to 7, characterized in that: The second cylinder includes multiple second cylinder bodies connected end to end in sequence. The connection between two adjacent second cylinder bodies includes a second flange, and two adjacent second flanges can be detachably installed. The multiple through holes are located in the bottommost second cylinder.

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