A portable sampler for geological exploration of water conservancy and environmental information

Abstract

The present application relates to geological sample collection equipment technical field, disclose a kind of for hydraulic ring information surveying and mapping geological exploration portable sampler, including shell, symmetrically arranged guide post in the shell interior, lift plate is arranged on the inner wall of shell, further including inflatable mechanism is arranged on the top of shell;Inflatable mechanism includes the wrapping material being arranged on the top of shell, the main gas pipe being arranged in the wrapping material, a plurality of annular arrays are arranged between the outer wall of main gas pipe and the inner wall of wrapping material, the fixed sleeve being arranged on the top of wrapping material, the screw hole being opened in the middle of the top of fixed sleeve, the limiting slot being opened in the top of fixed sleeve near the outside of screw hole, the butt joint ring being arranged in the limiting slot, the bend hole being opened in the bottom of butt joint ring, a plurality of annular arrays are opened in the bottom of limiting slot Gas hole.It can be sampled to water body of different depth by setting inflatable mechanism, and sampling and packaging can be conveniently completed, and the operation convenience is increased.

Description

Technical Field

[0001] This invention relates to the field of geological sample collection equipment technology, and in particular to a portable sampler for geological exploration used in hydrogeological and environmental information mapping. Background Technology

[0002] Portable samplers for geological exploration are key tools for acquiring water body data in hydrogeological and environmental information mapping, effectively solving the problem of difficult water sampling in complex terrain. The device is compact and lightweight, allowing for easy carrying by a single soldier to areas inaccessible by vehicles, such as deep mountains and valleys, ensuring comprehensive spatial coverage of survey points. Its core function is to guarantee the representativeness and authenticity of water samples. The device can penetrate deep into narrow monitoring wells or specific water depths, effectively isolating different water layers during extraction to avoid water disturbance and pollution, thus ensuring that the submitted samples accurately reflect the hydrogeological characteristics of the original site. This portable and high-precision sampling method replaces traditional cumbersome and inefficient operating procedures, significantly improving the efficiency and reliability of field data collection. It provides high-quality physical evidence for groundwater dynamic monitoring, water resource assessment, and water pollution control.

[0003] Traditional samplers are widely used in geological exploration, but due to limitations in their structure and working principle, they often present some significant problems. Existing water samplers face significant operational bottlenecks in hydrogeological mapping, particularly for sampling operations at different depths. The core issue is the inability to achieve continuous underwater sampling, resulting in extremely low work efficiency. In practice, for each water sample collected at a specific depth, workers must first completely raise the sampler to the surface, manually empty the sample, and then lower it again. This repetitive mechanical operation not only significantly extends the field exploration cycle but also increases the labor intensity of operators. Furthermore, these devices lack flexibility in adjusting sampling depth. Due to the lack of a depth control mechanism, relying solely on rope deployment and retrieval makes accurate positioning difficult in complex hydrogeological environments, leading to a cumbersome sampling process susceptible to water flow interference. More importantly, because the equipment cannot directly dispense and seal samples underwater, samples are highly susceptible to contact with the external environment or non-target water layers during retrieval, causing sample contamination or alteration of properties. These technological shortcomings severely restrict the accurate acquisition of multi-level hydrological data by hydrogeological and environmental information mapping, making it difficult to meet the actual needs of modern geological exploration for efficient and continuous sampling. Summary of the Invention

[0004] Given the limitations of existing technologies, such as the inability of samplers to continuously sample underwater and the inability to encapsulate samples underwater, a portable geological exploration sampler for hydrogeological and environmental information mapping is proposed.

[0005] Its purpose is to enable the sampler to complete sampling and encapsulation underwater, to perform continuous sampling, and to make it easy to adjust the sampling depth.

[0006] The technical solution of the present invention is a portable geological exploration sampler for hydrogeological and environmental information mapping, including a shell, guide columns symmetrically arranged inside the shell, a lifting plate arranged on the inner wall of the shell, and an inflation mechanism arranged on the top of the shell. The inflation mechanism includes a packaging material disposed on the top of the outer shell, a main air pipe disposed inside the packaging material, several auxiliary air pipes arranged in an annular array between the outer wall of the main air pipe and the inner wall of the packaging material, a fixing sleeve disposed on the top of the packaging material, a screw hole opened at the center of the top of the fixing sleeve, a limiting groove opened at the outer side of the screw hole on the top of the fixing sleeve, a docking ring disposed inside the limiting groove, a bent hole opened at the bottom of the docking ring, several air holes arranged in an annular array at the bottom of the limiting groove, the bottom ends of several air holes respectively docking with the top ends of several auxiliary air pipes, an air cylinder disposed on the inner wall of the screw hole, a piston disposed inside the air cylinder, two one-way valves obliquely symmetrically disposed on both sides of the piston with opposite flow directions, a vertical rod disposed inside the piston, a return spring disposed on the vertical rod inside the piston, a handle disposed on the top of the piston, baffles obliquely symmetrically disposed on the vertical rod near the top and bottom of the return spring, a partition unit disposed at the bottom of the air cylinder, and a sampling unit disposed on the outer side of the outer shell.

[0007] Furthermore, the top of the handle has a through hole extending to the bottom, and the middle and top of the vertical rod are slidably connected to the through hole.

[0008] Furthermore, the piston has a circular cavity near the return spring, and a circular plate is provided near the vertical rod near the circular cavity. The outer wall of the circular plate is slidably connected to the inner wall of the circular cavity, and the top and bottom of the return spring are fixedly connected to the circular plate and the circular cavity, respectively.

[0009] Furthermore, a lever is provided on the outer side of the docking ring, and the outer wall of the lever is slidably connected to the limiting groove.

[0010] Furthermore, the isolation unit includes a spiral spring disposed on the inner wall of the bottom of the air cylinder, a valve stem disposed on the inner end of the spiral spring, and an air groove opened on the outer side of the air cylinder near the spiral spring.

[0011] Furthermore, the inner wall of the air groove is provided with an airflow hole that extends into the air cylinder, and valve plates are provided at the top and bottom of the valve stem.

[0012] Furthermore, the sampling unit includes several test tubes arranged in a ring array on the outer wall of the outer shell, a sealing plug at the top of the test tube, several cylinders near the top of the test tube, a slider at the top of the cylinder, a pressure spring at the top of the slider, and a top plate at the top of the pressure spring. The bottom of the slider is engaged with the sealing plug, and the bottom end of the auxiliary air pipe extends into the interior of the outer shell and is fixedly connected to the cylinder.

[0013] Furthermore, the outer side of the outer shell is provided with a ring array of several locking blocks, which are engaged with the corresponding test tubes. The cylinder consists of a cylinder body and a plunger. The outer wall of the cylinder body is fixedly connected to the outer shell, and the top of the plunger is fixedly connected to the slider.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. By setting up an inflation mechanism, water samples of different depths can be taken at once, increasing operational convenience. The device's depth in the water can be controlled by adjusting the inflation state, allowing it to float in the target water layer without manual intervention. The operator only needs to operate the adjustment component to achieve continuous changes in depth. This design avoids the tedious process of repeatedly lowering the device, making it simple and quick to collect multiple layers of water samples in the vertical direction, effectively improving the overall smoothness of the operation.

[0015] 2. By setting up a sampling unit, sampling and packaging can be completed conveniently, improving operational efficiency. This unit integrates sample injection and sealing functions. It automatically opens the inlet after the sampling operation is performed and automatically closes it after the sample is filled, ensuring that sample collection and preservation are carried out simultaneously, shortening the operation time. It also provides tight packaging to prevent sample leakage and optimizes the workflow.

[0016] 3. By setting up test tubes, continuous underwater sampling can be achieved through several test tubes, avoiding the need to repeatedly raise the equipment to the surface. The device is equipped with multiple independent containers, which can collect samples from different locations multiple times during a single dive. Each container operates independently without interfering with others, and is retrieved uniformly after collection, saving the time required for repeated raising and lowering of the equipment and improving the continuity and overall efficiency of underwater operations. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the entire invention; Figure 2 This is a schematic diagram of the internal structure of the outer shell of the present invention; Figure 3 This is a schematic diagram of the connection between the fixing sleeve and the air cylinder of the present invention; Figure 4 This is a schematic diagram of the internal structure of the air cylinder of the present invention; Figure 5 This is a schematic diagram of the screw hole structure of the present invention; Figure 6 This is a schematic diagram of the connection between the fixing sleeve and the docking ring of the present invention; Figure 7 This is a schematic diagram of the docking ring structure of the present invention; Figure 8 This is a schematic diagram of the internal structure of the fixing sleeve of the present invention; Figure 9 This is a schematic diagram of the connection between the plunger and the spiral spring of the present invention; Figure 10 This is a schematic diagram of the internal structure of the piston of the present invention; Figure 11 This is a schematic diagram showing the relative positions of the outer shell and the test tube of the present invention; Figure 12 This is a schematic diagram of the connection between the test tube and the sealing plug according to the present invention; Figure 13 This is a schematic diagram showing the connection between the cylinder and the outer casing of the present invention; Figure 14 This is a schematic diagram showing the connection between the packaging material and the main air tube of the present invention.

[0018] In the picture: 1. Outer shell; 2. Guide post; 3. Lifting plate; 4. Inflation mechanism; 41. Packaging material; 42. Main air pipe; 43. Auxiliary air pipe; 44. Fixing sleeve; 45. Screw hole; 46. Limiting groove; 47. Connecting ring; 48. Bend; 49. Air hole; 410. Air cylinder; 411. Piston; 412. One-way valve; 413. Vertical rod; 414. Return spring; 415. Handle; 416. Baffle; 417. Spiral spring; 418. Valve stem; 419. Air groove; 420. Test tube; 421. Sealing plug; 422. Cylinder; 423. Slider; 424. Downward pressure spring; 425. Top plate. Detailed Implementation

[0019] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0020] Example 1, referring to Figures 1-14This invention provides a portable geological sampling device for hydrogeological and environmental information mapping, comprising a shell 1, guide posts 2 symmetrically fixedly connected inside the shell 1, a lifting plate 3 slidably connected to the inner wall of the shell 1, and an inflation mechanism 4 installed on the top of the shell 1. The inflation mechanism 4 includes a covering material 41 fixedly connected to the top of the shell 1, a main air pipe 42 fixedly connected inside the covering material 41, several auxiliary air pipes 43 in a ring array fixedly connected between the outer wall of the main air pipe 42 and the inner wall of the covering material 41, a fixing sleeve 44 fixedly connected to the top of the covering material 41, a screw hole 45 opened at the center of the top of the fixing sleeve 44, a limiting groove 46 opened at the outer side of the top of the fixing sleeve 44 near the screw hole 45, a docking ring 47 rotatably connected inside the limiting groove 46, and a bottom of the docking ring 47. The device includes a curved hole 48, several annular arrays of air holes 49 at the bottom of the limiting groove 46, the bottom ends of several air holes 49 respectively connected to the top ends of several auxiliary air pipes 43, an air cylinder 410 threadedly connected to the inner wall of the screw hole 45, a piston 411 slidably connected inside the air cylinder 410, one-way valves 412 obliquely and symmetrically fixedly connected to both sides of the piston 411, the flow directions of the two one-way valves 412 being opposite, a vertical rod 413 slidably connected inside the piston 411, a return spring 414 fixedly connected to the vertical rod 413 inside the piston 411, a handle 415 fixedly connected to the top of the piston 411, baffles 416 obliquely and symmetrically fixedly connected to the vertical rod 413 near the top and bottom of the return spring 414, a partition unit assembled at the bottom of the air cylinder 410, and a sampling unit assembled on the outside of the outer shell 1.

[0021] Specifically, when using the sampler, the outer casing 1 is placed in water. The outer casing 1 floats when the air content inside increases and sinks when the air content decreases. To inflate the outer casing 1, grip the fixing sleeve 44 and rotate the air cylinder 410. As the air cylinder 410 rotates, it moves along the axis of the screw hole 45. Control the air cylinder 410 to move towards the fixing sleeve 44 to its maximum stroke. At this point, the bottom end of the air cylinder 410 will align with the channel formed by the fixing sleeve 44 and the main air pipe 42. Then, grip the handle 415, and while gripping the handle 415... Simultaneously pressing the top of the vertical rod 413 causes it to move downwards, compressing the return spring 414. As the vertical rod 413 moves downwards, it also drives the two baffles 416 to move synchronously. At this time, the airflow from the top of the piston 411 to the bottom of the piston 411 in the two opposite-direction one-way valves 412 is released from blockage, and the airflow from the bottom of the piston 411 to the top of the piston 411 is closed. Then, by pulling up the handle 415, the piston 411 moves upwards, and the bottom of the piston 411 produces... When negative pressure is generated, air enters the bottom of piston 411 through inflation check valve 412. After handle 415 is pulled up to its maximum stroke, piston 411 is pressed down. At this time, the pressure at the bottom of piston 411 increases, thereby pushing the lifting plate 3 inside the outer shell 1 to move down. The downward movement of lifting plate 3 discharges water from the outer shell 1. At this time, the water discharge of the sampler increases, causing buoyancy to rise. Therefore, the outer shell 1 will float upward. By repeatedly pushing and pulling handle 415, more air can be injected into the interior of the outer shell 1. Since there is friction between lifting plate 3 and the inner wall of outer shell 1, a certain positive and negative pressure needs to be maintained. The lifting plate 3 can only move after the piston 411 has reached a certain level. Therefore, when the piston 411 moves, the lifting plate 3 will not move before the one-way valve 412 is opened. When it is necessary to remove the air from the outer shell 1, release the pressure on the vertical rod 413. At this time, the one-way valve 412 is opened. Then, push and pull the piston 411 through the handle 415 to remove the air from the outer shell 1. At this time, the lifting plate 3 moves upward. At the same time as it moves upward, a negative pressure is generated between the bottom of the lifting plate 3 and the inner wall of the outer shell 1, so that water flows into the interior from the bottom of the outer shell 1. At this time, the drainage of the outer shell 1 decreases, so the outer shell 1 will sink.

[0022] Reference Figures 3-10 The top of the handle 415 has a through hole extending to the bottom, and the middle and top of the vertical rod 413 are slidably connected to the through hole.

[0023] Specifically, the handle 415 constrains the vertical rod 413 through the through hole, so that the vertical rod 413 can only move up and down.

[0024] Reference Figure 10The piston 411 has a circular cavity near the return spring 414, and the vertical rod 413 has a circular plate near the circular cavity. The outer wall of the circular plate is slidably connected to the inner wall of the circular cavity. The top and bottom of the return spring 414 are fixedly connected to the circular plate and the circular cavity, respectively.

[0025] Specifically, the piston 411 accommodates the return spring 414 and the circular plate through the circular cavity. After the pressure on the vertical rod 413 is released, the vertical rod 413 will be reset under the action of the return spring 414.

[0026] Reference Figures 3-8 A lever is provided on the outer side of the docking ring 47, and the outer wall of the lever is slidably connected to the limiting groove 46.

[0027] Specifically, by applying force to the lever, it can slide along the annular groove, and while the lever slides, it drives the docking ring 47 to rotate.

[0028] Reference Figures 1-14 The partition unit includes a spiral spring 417 fixedly connected to the inner wall of the bottom of the air cylinder 410, a valve stem 418 fixedly connected to the inner end of the spiral spring 417, and an air groove 419 opened on the outside of the air cylinder 410 near the spiral spring 417.

[0029] Specifically, when the air cylinder 410 moves upward, it will drive the valve stem 418 to move together through the spiral spring 417. After the valve stem 418 moves a certain distance, the valve plate at the bottom will seal the channel connecting the main air pipe 42 inside the fixed sleeve 44. At this time, the valve stem 418 stops moving. Then, the air cylinder 410 continues to move upward until the valve plate at the top of the valve stem 418 seals the channel from the bottom of the air cylinder 410 to the main air pipe 42. In this state, the spiral spring 417 is stretched. When the bottom of the air cylinder 410 reconnects with the channel connecting the main air pipe 42 of the fixed sleeve 44, the spiral spring 417 returns to its original state and puts the valve stem 418 in a position where the channel is not blocked.

[0030] Reference Figure 8 and Figure 9 The inner wall of the air groove 419 is provided with an air flow hole that extends into the air cylinder 410, and valve plates are provided at the top and bottom of the valve stem 418.

[0031] Specifically, during the inflation and deflation process of the air cylinder 410, the internal airflow enters the air groove 419 through the airflow hole, and the airflow in the air groove 419 enters the bend 48.

[0032] Example 2, refer to Figures 1-14This is the second embodiment of the present invention. This embodiment differs from the first embodiment in that: the sampling unit includes several test tubes 420 arranged in a ring array and snapped onto the outer wall of the outer shell 1; a sealing plug 421 fixedly connected to the top of the test tubes 420; several cylinders 422 fixedly connected near the top of the test tubes 420; a slider 423 fixedly connected to the top of the cylinders 422; a pressure spring 424 fixedly connected to the top of the slider 423; and a top plate 425 fixedly connected to the top of the pressure spring 424. The bottom of the slider 423 is snapped into the sealing plug 421, and the bottom end of the auxiliary air pipe 43 penetrates into the interior of the outer shell 1 and is fixedly connected to the cylinders 422.

[0033] Specifically, once the outer casing 1 is in the appropriate position in the water, the air cylinder 410 is rotated to move away from the fixed sleeve 44 to its maximum stroke, causing the bottom end of the air cylinder 410 to be blocked by the valve stem 418. In this state, the bottom surface of the air groove 419 is flush with the bottom surface of the docking ring 47. Then, the docking ring 47 is rotated by the lever, which simultaneously rotates the bent hole 48. By rotating the bent hole 48 until it aligns with any of the air holes 49, the vertical rod 413 is pressed to put the inflation check valve 412 into standby mode. Then, the piston 411 is pushed or pulled by the handle 415 to inject air into the air groove 419. After entering the air groove 419, the air passes through the bent hole 48 and the corresponding air hole 49 in sequence, and then through... The air vent 49 enters the corresponding auxiliary air pipe 43 and cylinder 422, causing the plunger of cylinder 422 to rise. The plunger drives the slider 423 to rise simultaneously. The rise of slider 423 causes the lower spring 424 to store force, and slider 423 drives the sealing plug 421 to move upward together. After the sealing plug 421 moves upward a certain distance, it disengages from the test tube 420. At this time, external water will enter the test tube 420. Then, the air in cylinder 422 is extracted, causing the plunger to return to its original position. At this time, slider 423 will return to its original position under the action of the lower spring 424 and the plunger, and drive the sealing plug 421 to reseal the test tube 420, completing the sampling. By connecting the bent hole 48 with different air vents 49, sampling operations can be performed on different test tubes 420.

[0034] Reference Figures 1-13 The outer side of the outer shell 1 is provided with a ring array of several locking blocks, which are engaged with the corresponding test tubes 420. The cylinder 422 consists of a cylinder body and a plunger. The outer wall of the cylinder body is fixedly connected to the outer shell 1, and the top of the plunger is fixedly connected to the slider 423.

[0035] Specifically, the locking block secures the test tube 420 to prevent it from falling. When air is injected into the cylinder 422, the pressure increases, which pushes the plunger out. When the air is extracted, the plunger returns to its original position. The rest of the structure is the same as that in Example 1.

[0036] Based on embodiments 1-2, the working principle of this invention is as follows: This invention achieves depth adjustment and multi-point sealed sampling in hydrogeological exploration through the inflation mechanism 4. First, by rotating the air cylinder 410 to connect with the main air pipe 42 channel inside the fixed sleeve 44, the piston 411 is pushed and pulled back to generate air pressure, forcing the lifting plate 3 to move to change the drainage volume inside the outer shell 1. Increased drainage volume causes buoyancy to rise, making the outer shell 1 float, and vice versa, thus precisely controlling the device to suspend in the target water layer. After reaching the predetermined depth, the air cylinder 410 is rotated in the opposite direction to disengage from the main channel, causing the air groove 41 to... 9 is flush with the bottom surface of the docking ring 47. The operating lever rotates the docking ring 47, aligning the bent hole 48 with the specific air hole 49. When inflating again, the airflow enters the corresponding cylinder 422 through the auxiliary air pipe 43, pushing the plunger upward and compressing the spring. At the same time, it lifts the sealing plug 421, allowing the water sample to flow into the test tube 420. After evacuation, the plunger resets under the action of the spring, driving the sealing plug 421 to reseal the test tube 420, completing a single sampling. By rotating the docking ring 47 to switch between different air holes 49, multiple test tubes 420 can be sampled independently in sequence, ensuring the accuracy and sealing of the samples.

[0037] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention 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 solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A portable geological exploration sampler for hydrogeological and environmental information mapping, comprising a shell (1), guide columns (2) symmetrically arranged inside the shell (1), and a lifting plate (3) disposed on the inner wall of the shell (1), characterized in that: It also includes an inflation mechanism (4) located on the top of the outer casing (1); The inflation mechanism (4) includes a cover material (41) disposed on the top of the outer shell (1), a main air pipe (42) disposed inside the cover material (41), a plurality of auxiliary air pipes (43) arranged in an annular array between the outer wall of the main air pipe (42) and the inner wall of the cover material (41), a fixing sleeve (44) disposed on the top of the cover material (41), a screw hole (45) opened at the center of the top of the fixing sleeve (44), a limiting groove (46) opened at the top of the fixing sleeve (44) near the outside of the screw hole (45), a docking ring (47) disposed inside the limiting groove (46), a bent hole (48) opened at the bottom of the docking ring (47), a plurality of air holes (49) arranged in an annular array at the bottom of the limiting groove (46), and the bottom ends of the plurality of air holes (49) respectively connected to a plurality of The top end of the dry auxiliary air pipe (43) is connected to the air cylinder (410) set on the inner wall of the screw hole (45), the piston (411) is set inside the air cylinder (410), the one-way valves (412) are obliquely symmetrically set on both sides of the piston (411), the flow directions of the two one-way valves (412) are opposite, the vertical rod (413) is set inside the piston (411), the return spring (414) is set inside the vertical rod (413) at the piston (411), the handle (415) is set on the top of the piston (411), the baffle (416) is obliquely symmetrically set on the vertical rod (413) near the top and bottom of the return spring (414), the partition unit is set at the bottom of the air cylinder (410), and the sampling unit is set on the outside of the outer shell (1); The partition unit includes a spiral spring (417) disposed on the inner wall of the bottom of the air cylinder (410), a valve stem (418) disposed on the inner end of the spiral spring (417), and an air groove (419) opened on the outside of the air cylinder (410) near the spiral spring (417). The inner wall of the air groove (419) is provided with an airflow hole that extends into the air cylinder (410), and valve plates are provided at the top and bottom of the valve stem (418).

2. The portable geological sampling device for hydrogeological and environmental information mapping according to claim 1, characterized in that: The top of the handle (415) has a through hole extending to the bottom, and the middle and top of the vertical rod (413) are slidably connected to the through hole.

3. The portable geological sampling device for hydrogeological and environmental information mapping according to claim 1, characterized in that: The piston (411) has a circular cavity near the return spring (414), and the vertical rod (413) has a circular plate near the circular cavity. The outer wall of the circular plate is slidably connected to the inner wall of the circular cavity. The top and bottom of the return spring (414) are fixedly connected to the circular plate and the circular cavity, respectively.

4. The portable geological sampling device for hydrogeological and environmental information mapping according to claim 1, characterized in that: A lever is provided on the outer side of the docking ring (47), and the outer wall of the lever is slidably connected to the limiting groove (46).

5. The portable geological sampling device for hydrogeological and environmental information mapping according to claim 1, characterized in that: The sampling unit includes several test tubes (420) arranged in a ring array on the outer wall of the outer shell (1), a sealing plug (421) at the top of the test tube (420), several cylinders (422) arranged near the top of the test tube (420), a slider (423) arranged at the top of the cylinder (422), a pressure spring (424) arranged at the top of the slider (423), and a top plate (425) arranged at the top of the pressure spring (424). The bottom of the slider (423) is engaged with the sealing plug (421), and the bottom end of the auxiliary air pipe (43) penetrates into the interior of the outer shell (1) and is fixedly connected to the cylinder (422). The outer side of the outer shell (1) is provided with a number of locking blocks in a ring array. The locking blocks are engaged with the corresponding test tubes (420). The cylinder (422) is composed of a cylinder body and a plunger. The outer wall of the cylinder body is fixedly connected to the outer shell (1), and the top of the plunger is fixedly connected to the slider (423).

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