Underground water sampling device for engineering geological survey

Abstract

The utility model discloses an underground water sampling device for engineering geological survey, which comprises a main body assembly, a control box, a positioning plate, ground nails, a support frame and a driving box, the support frame is arranged in the control box, and the driving box is fixed at the top of the support frame; the water taking assembly comprises a moving part, a winding part and a sample separating part, the moving part is arranged in the control box, the winding part is arranged in the driving box, and the sample separating part is arranged below the driving box. The underground water sampling device has the beneficial effects that through the matched use of the moving part and the winding part, a worker can conveniently operate and sample underground water at a position far away from a water source sampling point, the worker can be prevented from falling into water accidentally, the safety during water source sampling is improved, and through the arrangement of the sample separating part, the worker can conveniently place the sampler into the underground water, so that the sampling efficiency is improved. Five underground water sources with different depths are sampled at a time, and meanwhile, filter holes are formed in the top of the sample separating barrel, so that weeds or large-particle impurities can be prevented from entering the sample separating barrel.

Description

Technical Field

[0001] This utility model relates to the field of geological exploration technology, and in particular to a groundwater sampling device for engineering geological exploration. Background Technology

[0002] Groundwater sampling is a crucial task in engineering geological exploration. It is essential for assessing groundwater quality, understanding its dynamic changes, and determining its impact on engineering structures. During geological exploration, a borehole is typically drilled at a sampling point in the exploration area to obtain groundwater samples. This allows for the analysis of the local geology and water quality. After drilling, a deep circular well is formed, into which workers place a sampler to collect groundwater samples.

[0003] Currently, when sampling groundwater, staff usually stand next to the well at the sampling point and then place the sampler into the well to collect the water sample. However, the area near the water source is usually slippery, and staff are prone to slipping or falling, especially in deep water areas. If a staff member accidentally falls into the water, they may face the risk of drowning. In addition, the existing sampler can only obtain a water sample from one depth at a time when it is placed into the well. Since the water quality is different at different depths, when it is necessary to sample water from different depths, the sampler needs to be retrieved and placed in several times, which is inefficient. Utility Model Content

[0004] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the present invention.

[0005] In view of the problems existing in the above and / or existing groundwater sampling devices for engineering geological exploration, this utility model is proposed.

[0006] Therefore, the problem that this utility model aims to solve is that when sampling groundwater, workers are usually located next to the well at the sampling point, and then put the sampler into the well to carry out the water sampling work. However, the area near the water source is usually slippery, and workers are prone to slipping or falling, especially in deep water areas. If workers accidentally fall into the water, they may face the risk of drowning. At the same time, the existing sampler can only obtain a water sample from one depth at a time when it is put into the well. However, the water quality is different at different depths of groundwater. When it is necessary to sample water sources at different depths, the sampler needs to be retrieved and put in several times, which results in low work efficiency.

[0007] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a groundwater sampling device for engineering geological exploration, comprising a main component including a control box, a positioning plate, ground spikes, a support frame, and a drive box. The positioning plate is fixed to the four outer corners of the control box, the ground spikes are inserted into the inner wall of the positioning plate, the support frame is disposed inside the control box, and the drive box is fixed to the top of the support frame. A water sampling component is disposed outside the control box, including a moving part, a winding part, and a sample separating part. The moving part is disposed inside the control box, the winding part is disposed inside the drive box, and the sample separating part is disposed below the drive box.

[0008] As a preferred embodiment of the groundwater sampling device for engineering geological exploration described in this utility model, the moving part includes a first motor, a screw, a first bearing, and a limiting block. The first motor is fixed to the inner wall of the control box. The screw is installed at the output end of the first motor through a coupling. The first bearing is rotatably connected to one end of the screw and is fixed to the inner wall of the control box. The limiting block is fixed to the outer side of the screw.

[0009] As a preferred embodiment of the groundwater sampling device for engineering geological exploration described in this utility model, the movable component further includes a movable plate, which is threadedly connected to the outside of the screw and fixed to the bottom of the support frame.

[0010] As a preferred embodiment of the groundwater sampling device for engineering geological exploration described in this utility model, the moving part further includes a chute and a slider. The chute is formed on the inner wall of the control box, and the slider is fixed to the outer side of the moving plate and slidably connected to the inner wall of the chute.

[0011] As a preferred embodiment of the groundwater sampling device for engineering geological exploration described in this utility model, the winding component includes a second motor, a rotating shaft, a second bearing, and a winding roller. The second motor is fixed to the inner wall of the drive box. The rotating shaft is installed at the output end of the second motor via a coupling. The second bearing is rotatably connected to one end of the rotating shaft and is fixed to the inner wall of the drive box. The winding roller is installed on the outer side of the rotating shaft.

[0012] As a preferred embodiment of the groundwater sampling device for engineering geological exploration described in this utility model, the winding component further includes a cable, a sampler, and a weighted cone. The cable is wound around the outside of the winding roller, the sampler is installed at one end of the cable, and the weighted cone is fixed to the bottom of the sampler.

[0013] As a preferred embodiment of the groundwater sampling device for engineering geological exploration described in this utility model, the sampling component includes a sampling cylinder, a cavity, an electronic controller, a signal receiver, and signal lines. The sampling cylinder is disposed inside the sampler, the cavity is opened inside the sampler, the electronic controller and the signal receiver are both fixed inside the cavity, and there are five sampling cylinders and five signal lines, which correspond to each other.

[0014] As a preferred embodiment of the groundwater sampling device for engineering geological exploration described in this utility model, the sample separating component further includes a filter hole, which is located at the top of the sample separating cylinder.

[0015] As a preferred embodiment of the groundwater sampling device for engineering geological exploration described in this utility model, the sampling component further includes a waterproof seat, a hydraulic rod, a push plate, a plug, and a water inlet. The waterproof seat is fixed to the inner wall of the sampling cylinder, the hydraulic rod is disposed inside the waterproof seat, and the hydraulic rod is electrically connected to the electronic controller via a signal line. The push plate is fixed to the top of the hydraulic rod, the plug is fixed to the top of the push plate, the water inlet is opened below the filter hole, and the plug is snapped into the inner wall of the water inlet.

[0016] As a preferred embodiment of the groundwater sampling device for engineering geological exploration described in this utility model, the sample-separating component further includes a sealing groove and a sealing ring. The sealing groove is formed on the inner wall of the waterproof seat, and the sealing ring is fixed to the top of the push plate and snapped into the inner wall of the sealing groove.

[0017] The beneficial effects of this utility model are as follows: By using the moving part and the winding part together, it is convenient for staff to operate the sampling device at a distance from the water source sampling point to carry out groundwater sampling. This can prevent staff from accidentally falling into the water and improve the safety of water source sampling. The sample-dividing part makes it easy for staff to put the sampler into the groundwater and sample water sources at five different depths at one time, which improves the efficiency of groundwater sampling. At the same time, the filter hole at the top of the sample-dividing tube can prevent weeds or large particles of impurities from entering the sample-dividing tube, avoiding impurities from affecting the detection of water source samples, thereby improving the accuracy of groundwater sampling. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0019] Figure 1This is a structural diagram of the main components of a groundwater sampling device used for engineering geological exploration.

[0020] Figure 2 This is a structural diagram of the water sampling component of a groundwater sampling device used for engineering geological exploration.

[0021] Figure 3 This is a structural diagram of the moving parts of a groundwater sampling device used for engineering geological exploration.

[0022] Figure 4 This is a structural diagram of the winding component of a groundwater sampling device used for engineering geological exploration.

[0023] Figure 5 This is a diagram of the internal structure of a groundwater sampling device used for engineering geological exploration.

[0024] Figure 6 This is a diagram of the internal structure of the sampling tube of a groundwater sampling device used for engineering geological exploration.

[0025] Figure 7 Groundwater sampling device for engineering geological exploration Figure 6 Enlarged structural diagram at point A in the middle.

[0026] Numbered components in the diagram: 100, Main component; 101, Control box; 102, Positioning plate; 103, Ground stake; 104, Support frame; 105, Drive box; 200, Water intake component; 201, Moving part; 201a, First motor; 201b, Screw; 201c, First bearing; 201d, Limiting block; 201e, Moving plate; 201f, Slide groove; 201g, Slider; 202, Rewinding component; 202a, Second motor; 202b, Rotating shaft; 202c 202d, Second bearing; 202e, Take-up roller; 202f, Cable; 202g, Cone; 203, Sample divider; 203a, Sample divider cylinder; 203b, Cavity; 203c, Electronic controller; 203d, Signal receiver; 203e, Signal line; 203f, Filter hole; 203g, Waterproof seat; 203h, Hydraulic rod; 203i, Push plate; 203j, Seal; 203k, Water inlet; 203l, Sealing groove; 203m, Sealing ring. Detailed Implementation

[0027] To make the above-mentioned objectives, features and advantages of this utility model more readily understood, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0028] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0029] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single embodiment or an embodiment selectively excluded from other embodiments.

[0030] Example 1

[0031] Reference Figures 1 to 7 This is the first embodiment of the present invention. This embodiment provides a groundwater sampling device for engineering geological exploration. The groundwater sampling device for engineering geological exploration includes a main component 100 and a water sampling component 200. The main component 100 can improve the safety of personnel when sampling groundwater during engineering geological exploration. The water sampling component 200 can extract five different types of water source samples from groundwater at one time.

[0032] The main component 100 includes a control box 101, a positioning plate 102, a ground nail 103, a support frame 104, and a drive box 105. The positioning plate 102 is fixed to the four outer corners of the control box 101, the ground nail 103 is inserted into the inner wall of the positioning plate 102, the support frame 104 is disposed inside the control box 101, and the drive box 105 is fixed to the top of the support frame 104.

[0033] The control box 101 is used to install the moving part 201. Usually, before groundwater sampling is carried out in engineering geological exploration, the ground of the sampling site is drilled to collect samples. The drilling will form a deep circular well. The control box 101 is placed near the circular well. The positioning plate 102 is connected to the four corners of the outside of the control box 101. The control box 101 can be fixed to the ground by ground nails 103. The support frame 104 is used to support the drive box 105. The drive box 105 is used to install the winding part 202.

[0034] The water intake assembly 200 is located outside the control box 101 and includes a moving part 201, a winding part 202 and a sample dividing part 203. The moving part 201 is located inside the control box 101, the winding part 202 is located inside the drive box 105, and the sample dividing part 203 is located below the drive box 105.

[0035] The movable component 201 allows workers to control the sampler 202f to enter the well for water sample extraction without having to get close to the well, thus improving the safety of workers. The retractable component 202 allows workers to control the retraction and deployment of the sampler 202f. The sample splitting component 203 allows workers to extract water samples from different depths at once.

[0036] Example 2

[0037] Reference Figure 3 and Figure 4 This is the second embodiment of the present invention, which is based on the previous embodiment.

[0038] Specifically, the moving part 201 includes a first motor 201a, a screw 201b, a first bearing 201c, and a limiting block 201d. The first motor 201a is fixed to the inner wall of the control box 101. The screw 201b is installed at the output end of the first motor 201a through a coupling. The first bearing 201c is rotatably connected to one end of the screw 201b and is fixed to the inner wall of the control box 101. The limiting block 201d is fixed to the outside of the screw 201b.

[0039] The first motor 201a is used to drive the screw 201b to rotate. The first motor 201a is a bidirectional motor that can change the rotation direction of the screw 201b. Since the screw 201b is threadedly connected to the inner wall of the moving plate 201e, when the screw 201b rotates, the moving plate 201e will move with the screw 201b. The first bearing 201c is installed at one end of the screw 201b, which can improve the rotation stability of the screw 201b when it rotates. By setting the limit block 201d, the movement distance of the moving plate 201e can be limited to prevent it from moving too far and disengaging from the screw 201b.

[0040] Specifically, the movable component 201 also includes a movable plate 201e, which is threaded to the outside of the screw 201b and fixed to the bottom of the support frame 104.

[0041] Since the movable plate 201e is fixed to the bottom of the support frame 104, when the movable plate 201e moves inside the control box 101, it can drive the support frame 104 to move as well, which in turn can drive the drive box 105 fixed to the top of the support frame 104 to move.

[0042] Specifically, the movable component 201 also includes a slide groove 201f and a slider 201g. The slide groove 201f is formed on the inner wall of the control box 101, and the slider 201g is fixed to the outer side of the movable plate 201e and slidably connected to the inner wall of the slide groove 201f.

[0043] The slide groove 201f is formed on the inner wall of the control box 101. Since the slider 201g slides on its inner wall and is fixed on the outside of the moving plate 201e, when the moving plate 201e moves, the slider 201g slides in the slide groove 201f along with the moving plate 201e, limiting the movement of the moving plate 201e and thus improving the stability of the movement of the moving plate 201e.

[0044] Specifically, the take-up component 202 includes a second motor 202a, a rotating shaft 202b, a second bearing 202c, and a take-up roller 202d. The second motor 202a is fixed to the inner wall of the drive box 105. The rotating shaft 202b is installed at the output end of the second motor 202a via a coupling. The second bearing 202c is rotatably connected to one end of the rotating shaft 202b and is fixed to the inner wall of the drive box 105. The take-up roller 202d is installed on the outer side of the rotating shaft 202b.

[0045] The second motor 202a is used to drive the rotating shaft 202b to rotate. The second motor 202a is a bidirectional motor that can change the rotation direction of the rotating shaft 202b. Since the rotating shaft 202b is installed on the inner wall of the take-up roller 202d, when the rotating shaft 202b rotates, the take-up roller 202d will rotate synchronously with the rotating shaft 202b. The second bearing 202c is installed at one end of the rotating shaft 202b. When the rotating shaft 202b rotates, it can improve the stability of its rotation. The rotation of the take-up roller 202d can take in and unwind the cable 202e wrapped around its outer side.

[0046] Specifically, the take-up component 202 also includes a cable 202e, a sampler 202f, and a weighted cone 202g. The cable 202e is wound around the outside of the take-up roller 202d, the sampler 202f is installed at one end of the cable 202e, and the weighted cone 202g is fixed to the bottom of the sampler 202f.

[0047] Cable 202e is used to install sampler 202f. Cable 202e facilitates the movement of sampler 202f when it is extended or retracted. The insulating jacket of cable 202e is printed with scale lines to help staff understand the depth of sampler 202f. The weight cone 202g is fixed to the bottom of sampler 202f, which can increase the gravitational acceleration of sampler 202f, thereby improving the smoothness of sampler 202f during descent. Sampler 202f is used to sample groundwater.

[0048] Example 3

[0049] Reference Figure 5 , Figure 6 and Figure 7 This is the third embodiment of the present invention, which is based on the first two embodiments.

[0050] Specifically, the sample distribution component 203 includes a sample distribution cylinder 203a, a cavity 203b, an electronic controller 203c, a signal receiver 203d, and a signal line 203e. The sample distribution cylinder 203a is located inside the sampler 202f, the cavity 203b is located inside the sampler 202f, the electronic controller 203c and the signal receiver 203d are both fixed inside the cavity 203b, and there are five sample distribution cylinders 203a and five signal lines 203e, which correspond to each other.

[0051] Five sampling cylinders 203a are provided to sample groundwater sources at five different depths. A cavity 203b is located inside the sampler 202f and is used to install an electronic controller 203c and a signal receiver 203d. The electronic controller 203c is connected to five signal lines 203e and is electrically connected to the signal receiver 203d. When the signal receiver 203d receives an operation instruction from the operator, the signal is transmitted to the electronic controller 203c. The electronic controller 203c controls the hydraulic rod 203h in the corresponding sampling cylinder 203a through the signal lines 203e. In this case, the signal receiver 203d is a device specifically designed to receive and process various signals in an underwater environment. These signals can be sound waves, electromagnetic waves, or other forms of energy, and are mainly used for detecting, locating, identifying, and transmitting underwater acoustic or electromagnetic signals.

[0052] Specifically, the sample divider 203 also includes a filter hole 203f, which is located at the top of the sample divider cylinder 203a.

[0053] The filter hole 203f is located at the top of the sample tube 203a to prevent weeds or large particles from entering the sample tube 203a, thus avoiding the influence of impurities on the detection of water source samples and improving the accuracy of groundwater sampling.

[0054] Specifically, the sample distribution component 203 also includes a waterproof seat 203g, a hydraulic rod 203h, a push plate 203i, a plug 203j, and a water inlet 203k. The waterproof seat 203g is fixed to the inner wall of the sample distribution cylinder 203a. The hydraulic rod 203h is located inside the waterproof seat 203g. The hydraulic rod 203h is electrically connected to the electronic controller 203c through a signal line 203e. The push plate 203i is fixed to the top of the hydraulic rod 203h. The plug 203j is fixed to the top of the push plate 203i. The water inlet 203k is opened below the filter hole 203f. The plug 203j is snapped into the inner wall of the water inlet 203k.

[0055] The waterproof seat 203g is fixed inside the sample distribution cylinder 203a, which facilitates the installation of the hydraulic rod 203h inside it, preventing water from entering the hydraulic rod 203h and providing a protective effect. The hydraulic rod 203h in this case can be used underwater. Its working principle is basically the same as that of an ordinary hydraulic rod, which uses hydraulic pressure to push the piston or telescopic rod to achieve mechanical movement. However, due to the special nature of the underwater environment, the hydraulic rod 203h in this case needs to undergo some special treatment in its design and manufacturing process (the specific processing principle has been published in the existing technology and will not be elaborated here). When the hydraulic rod 203h receives a signal, it starts to drive the push plate 203i. The push plate 203i moves and causes the seal 203j to separate from the water inlet 203k below the filter hole 203f, so that the water sample can enter the sample distribution cylinder 203a. After the sample is collected, the hydraulic rod 203h pushes the push plate 203i to move and causes the seal 203j to close with the water inlet 203k.

[0056] Specifically, the sample part 203 also includes a sealing groove 203l and a sealing ring 203m. The sealing groove 203l is opened in the inner wall of the waterproof seat 203g, and the sealing ring 203m is fixed to the top of the push plate 203i. The sealing ring 203m is snapped into the inner wall of the sealing groove 203l.

[0057] The sealing groove 203l is opened on the inner wall of the sample tube 203a, and the sealing ring 203m is fixed on the top of the push plate 203i. When the push plate 203i pushes the plug 203j to close with the water inlet 203k, the sealing ring 203m is engaged in the sealing groove 203l, thereby improving the sealing effect of the sample tube 203a.

[0058] In use, the staff fixes the control box 101 to the ground near the water source sampling point using ground nails 103. The staff stands at a distance from the water source and moves the drive box 105 to the top of the well using the moving part 201. Then, the sampler 202f is lowered into the well using the retracting part 202 to collect groundwater samples. The staff can control the extraction of water samples from five different depths at one time using the sample separating part 203 on the ground. Since the sampler 202f is located below the drive box 105, the sampler 202f is finally retrieved using the retracting part 202, and the sample is moved to a safe area using the moving part 201.

[0059] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A groundwater sampling device for engineering geological investigations, characterized in that: The utility model relates to a kind of water sampling device, including, Main body assembly (100), including operating box (101), positioning plate (102), ground nail (103), support frame (104) and drive box (105), the positioning plate (102) is fixed to the four corners outside the operating box (101), the ground nail (103) is inserted in the inner wall of the positioning plate (102), the support frame (104) is arranged inside the operating box (101), and the drive box (105) is fixed to the top of the support frame (104); Water taking assembly (200) is arranged outside the operating box (101), including moving part (201), winding part (202) and sample separating part (203), the moving part (201) is arranged inside the operating box (101), the winding part (202) is arranged inside the drive box (105), and the sample separating part (203) is arranged below the drive box (105).

2. The device for taking groundwater samples for engineering-geological surveys according to claim 1, characterised in that: The moving part (201) includes first motor (201a), screw rod (201b), first bearing (201c) and limit block (201d), the first motor (201a) is fixed to the inner wall of the operating box (101), the screw rod (201b) is installed on the output end of the first motor (201a) by shaft coupling, the first bearing (201c) is rotatably connected to one end of the screw rod (201b), the first bearing (201c) is fixed to the inner wall of the operating box (101), and the limit block (201d) is fixed to the outer side of the screw rod (201b).

3. The device for taking groundwater samples for engineering-geological surveys according to claim 2, characterised in that: The moving part (201) further includes moving plate (201e), and the moving plate (201e) is threadedly connected to the outer side of the screw rod (201b), and the moving plate (201e) is fixed to the bottom of the support frame (104).

4. The device for taking groundwater samples for engineering-geological surveys according to claim 3, characterised in that: The moving part (201) further includes chute (201f) and sliding block (201g), the chute (201f) is opened in the inner wall of the operating box (101), and the sliding block (201g) is fixed to the outer side of the moving plate (201e) and is slidably connected to the inner wall of the chute (201f).

5. The device for taking groundwater samples for engineering-geological surveys according to claim 1, characterised in that: The winding part (202) includes second motor (202a), rotating shaft (202b), second bearing (202c) and winding roller (202d), the second motor (202a) is fixed to the inner wall of the drive box (105), the rotating shaft (202b) is installed on the output end of the second motor (202a) by shaft coupling, the second bearing (202c) is rotatably connected to one end of the rotating shaft (202b), the second bearing (202c) is fixed to the inner wall of the drive box (105), and the winding roller (202d) is installed on the outer side of the rotating shaft (202b).

6. The device for taking groundwater samples for engineering-geological surveys according to claim 5, characterised in that: The winding piece (202) further comprises a cable (202e), a sampler (202f) and a heavy cone (202g), the cable (202e) is wound outside the winding roller (202d), the sampler (202f) is installed at one end of the cable (202e), and the heavy cone (202g) is fixed at the bottom of the sampler (202f).

7. The device for taking groundwater samples for engineering-geological surveys according to claim 6, characterised in that: The sample separating piece (203) comprises a sample separating cylinder (203a), a cavity (203b), an electric controller (203c), a signal receiver (203d) and a signal line (203e), the sample separating cylinder (203a) is arranged inside the sampler (202f), the cavity (203b) is arranged inside the sampler (202f), the electric controller (203c) and the signal receiver (203d) are both fixed inside the cavity (203b), and the sample separating cylinder (203a) and the signal line (203e) are both arranged as five and correspond to each other.

8. The device for taking groundwater samples for engineering-geological surveys according to claim 7, characterised in that: The sample separating piece (203) further comprises a filter hole (203f), and the filter hole (203f) is arranged at the top end of the sample separating cylinder (203a).

9. The device for taking groundwater samples for engineering-geological surveys according to claim 7, characterised in that: The sample separating piece (203) further comprises a waterproof seat (203g), a hydraulic rod (203h), a push plate (203i), a sealing (203j) and a water inlet (203k), the waterproof seat (203g) is fixed to the inner wall of the sample separating cylinder (203a), the hydraulic rod (203h) is arranged inside the waterproof seat (203g), the hydraulic rod (203h) is electrically connected with the electric controller (203c) through the signal line (203e), the push plate (203i) is fixed to the top end of the hydraulic rod (203h), the sealing (203j) is fixed to the top of the push plate (203i), the water inlet (203k) is arranged below the filter hole (203f), and the sealing (203j) is clamped to the inner wall of the water inlet (203k).

10. The device for taking groundwater samples for engineering-geological surveys according to claim 9, characterized in that: The sample separating piece (203) further comprises a sealing groove (203l) and a sealing ring (203m), the sealing groove (203l) is arranged in the inner wall of the waterproof seat (203g), and the sealing ring (203m) is fixed to the top of the push plate (203i) and clamped to the inner wall of the sealing groove (203l).

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