A sampling machine for water body detection of hydraulic engineering

Abstract

The application relates to the technical field of water conservancy projects, and provides a sampling machine for water body detection of water conservancy projects, which comprises a mounting seat, a first piston cavity is formed in the mounting seat, a first piston plate is sealingly and slidably arranged in the first piston cavity, a driving component for driving the first piston plate to move is arranged in the right sealing cavity, the power end of the driving component sealingly and slidably penetrates through the right sealing cavity and is connected and fixed with the first piston plate, at least two linearly and uniformly distributed sampling bottles are detachably arranged at the lower end of a connecting seat, the sampling bottles are sealingly communicated with the first piston cavity through a second piston cavity, and an opening and closing device for opening and closing the second piston cavity is arranged on the connecting seat. The application has the beneficial effects that the multi-sampling bottle design can realize stratified sampling, and can realize the function of automatically sealing after sampling of the sampling bottles is completed; the first piston plate can realize multiple pollution-free sampling, and can guarantee the accuracy of water quality detection; the modular sampling bottles are convenient to disassemble and transport, and can improve operation efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of water conservancy engineering technology, and specifically relates to a sampling machine for water body detection in water conservancy projects. Background Technology

[0002] As water conservancy projects have gradually developed, when it is necessary to understand water quality, it is necessary to use a sampler to sample the water source. Sampling devices are a general term for instruments used to collect seawater samples. Due to the different objects being sampled, there are more and more types of existing sampling devices, resulting in different water collection devices. Since the water conservancy industry often needs to sample and analyze water samples, the design of water sampling devices is more sophisticated and the requirements are more stringent.

[0003] However, existing water sampling devices for water conservancy projects cannot sample water bodies at various depths, requiring repeated operations to complete the sampling work. Furthermore, they cannot automatically open and close the sampling bottle during the sampling process, resulting in relatively low work efficiency. Utility Model Content

[0004] In view of this, the present invention provides a sampling machine for water body testing in water conservancy projects. The multi-sampling bottle design enables stratified sampling and automatic sealing after sampling is completed. The first piston plate enables multiple uncontaminated samplings, ensuring the accuracy of water quality testing. The modular sampling bottles are easy to disassemble and transport, improving operational efficiency.

[0005] The technical solution is as follows: A sampling machine for water body detection in water conservancy projects includes a mounting base. A left sealing cavity and a right sealing cavity are symmetrically mounted on both sides of the mounting base. A connecting rope is fixedly installed at the middle position of the upper end of the mounting base. A wire harness is wrapped inside the connecting rope. A controller and a power module are installed inside the left sealing cavity. A first piston cavity is opened on the mounting base. A first piston plate is slidably mounted inside the first piston cavity. A driving component for moving the first piston plate is installed inside the right sealing cavity. The power end of the driving component slidably passes through the right sealing cavity and is connected and fixed to the first piston plate. A connecting seat is fixedly installed at the lower end of the mounting base. At least two linearly uniformly distributed sampling bottles are detachably mounted on the lower end of the connecting seat. The sampling bottles are sealed and connected to the first piston cavity through a second piston cavity. An opening and closing device for opening and closing the second piston cavity is provided on the connecting seat.

[0006] During use, the above technical solution features: the multi-sampling bottle design enables stratified sampling and automatic sealing after sampling; the first piston plate enables multiple uncontaminated samplings, ensuring the accuracy of water quality testing; and the modular sampling bottles facilitate disassembly and transportation, improving operational efficiency.

[0007] Preferably, the opening and closing device includes multiple circumferentially evenly distributed support rods fixedly installed in the second piston chamber, a third piston chamber coaxial with the second piston chamber is provided at the middle position of the multiple support rods, an air bladder is fixedly provided at the upper end of the third piston chamber, a third piston rod is fixedly provided at the lower end of the third piston chamber, and a float is fixedly provided at the lower end of the third piston rod.

[0008] Preferably, the lower end of the third piston cavity is fixedly provided with a third piston hole, the third piston rod slides through the third piston hole in a sealed manner, the upper end of the third piston cavity is provided with a vent hole communicating with the airbag, the upper end of the third piston rod is fixedly provided with a third piston plate, and the third piston plate is slidably installed in the third piston cavity, and a first elastic component is provided between the third piston plate and the third piston cavity.

[0009] Preferably, a mounting plate is provided on the third piston cavity below the vent hole, and a gap is reserved between the mounting plate and the upper end face of the third piston cavity. The mounting plate is connected and fixed to the upper end face of the third piston cavity by multiple circumferentially evenly distributed connecting rods. An automatic positioning mechanism corresponding to the third piston plate is fixedly provided at the lower end of the mounting plate, and the automatic positioning mechanism is electrically connected to the controller.

[0010] Preferably, the automatic positioning mechanism includes a positioning cavity fixedly mounted on a mounting plate, a first detection contact is fitted at the top of the inner wall of the positioning cavity, a fourth piston plate is slidably mounted in the positioning cavity, a second detection contact corresponding to the first detection contact is provided on the fourth piston plate, a positioning rod extending out of the positioning cavity and corresponding to the third piston plate is fixedly provided on the fourth piston plate, and a second elastic component corresponding to the positioning cavity is provided on the fourth piston plate.

[0011] Preferably, the lower end of the positioning cavity is provided with a sliding hole for the positioning rod to slide through. The second elastic component is movably fitted on the positioning rod, with one end connected and fixed to the fourth piston plate and the other end connected and fixed to the positioning cavity. The distance by which the positioning rod extends out of the positioning cavity is equal to the distance between the first detection contact and the second detection contact.

[0012] During use, the above technical solution achieves precise positioning control through the linkage between the fourth piston plate and the positioning rod. The equal design of the extension length of the positioning rod and the contact distance ensures that the contact triggering and mechanical displacement are synchronized. The mounting plate supported by the connecting rod keeps the positioning cavity stable. The gap structure on the lower side of the vent hole ensures air pressure balance and minimizes the sliding resistance of the fourth piston plate.

[0013] Preferably, the connecting seat has an annular groove on the outer ring of the second piston chamber, and the outer ring of the annular groove in the connecting seat has an internal thread. The sampling bottle is fixedly provided with a connecting part, and the connecting part has an external thread corresponding to the internal thread.

[0014] Preferably, an annular sealing gasket is fixedly provided at the upper end of the sampling bottle.

[0015] Preferably, a sealing pipe for the wire harness to pass through is provided between the left sealing cavity and the connecting rope, and the left sealing cavity and the right sealing cavity are connected by a connecting pipe.

[0016] Preferably, the first piston cavity extends through one end of the mounting base, the mounting base has a first piston hole communicating with the first piston cavity, the right sealing cavity has a piston hole, the first piston plate is fixedly provided with a first piston rod that slides through the first piston hole, the power end of the driving component is fixedly provided with a piston rod that slides through the piston hole, and the first piston rod and the piston rod are connected and fixed by a connecting plate.

[0017] During use, the above technical solution controls the opening of different sampling bottles by controlling the position of the first piston plate in the first piston cavity, thus achieving multi-depth sampling. After sampling, the first piston plate is driven to reset to prevent liquid from remaining in the first piston cavity and causing contamination from multiple samplings. The sampling bottle is quickly locked to the annular groove through the threaded connection, and the annular sealing gasket ensures the sealing of the interface, making it convenient to replace and store the sampling bottle and preventing the sampling bottle from being reused without cleaning, thus preventing contamination of the sampling water.

[0018] After adopting the above technical solution, the beneficial effects of this utility model are:

[0019] 1. The multi-sampling bottle design enables stratified sampling and automatic sealing after sampling. The first piston plate allows for multiple uncontaminated samplings, ensuring the accuracy of water quality testing. The modular sampling bottles facilitate disassembly and transportation, improving operational efficiency.

[0020] 2. Precise positioning control is achieved through the linkage between the fourth piston plate and the positioning rod. The equal design of the extension length of the positioning rod and the contact distance ensures that the contact triggering and mechanical displacement are synchronized. The mounting plate supported by the connecting rod keeps the positioning cavity stable. The gap structure on the lower side of the vent hole ensures air pressure balance and minimizes the sliding resistance of the fourth piston plate.

[0021] 3. By controlling the position of the first piston plate in the first piston cavity, the opening of different sampling bottles can be controlled, realizing the function of multi-depth sampling. After sampling is completed, the first piston plate is driven to reset to prevent liquid in the first piston cavity from causing contamination from multiple samplings. The sampling bottle is quickly locked to the annular groove through the threaded connection part, and the annular sealing gasket ensures the interface sealing, making it convenient to replace and store the sampling bottle, and preventing the sampling water from being contaminated by reusing the sampling bottle without cleaning. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art 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.

[0023] Figure 1 This is a perspective view of the present utility model;

[0024] Figure 2 This is a side view of the present invention;

[0025] Figure 3 This is a cross-sectional view of the present invention;

[0026] Figure 4 This is an exploded view of the present invention;

[0027] Figure 5 This is a perspective view of the mounting base of this utility model;

[0028] Figure 6 This is a sectional view of the mounting base of this utility model;

[0029] Figure 7 This is a partial exploded view of the present invention;

[0030] Figure 8 This is a perspective view of the opening and closing device of this utility model;

[0031] Figure 9 This is a cross-sectional view of the opening and closing device of this utility model;

[0032] Figure 10 This is an exploded view of the opening and closing device of this utility model;

[0033] Figure 11 This is a diagram illustrating the sealing effect of the opening and closing device of this utility model on the second piston chamber.

[0034] Figure 12 This is a cross-sectional view of the third piston cavity of this utility model;

[0035] Figure 13 This is a cross-sectional view of the automatic positioning mechanism of this utility model;

[0036] In the diagram, 1. Mounting base; 2. First piston hole; 3. Connecting seat; 4. Second piston chamber; 5. Annular groove; 6. Connecting rope; 7. Wiring harness; 8. Left sealing cavity; 9. Sealing pipe; 10. Right sealing cavity; 11. Second piston hole; 12. Connecting pipe; 13. Drive component; 14. Connecting plate; 15. First piston rod; 16. First piston plate; 17. Sampling bottle; 18. Connecting part; 19. Annular sealing gasket; 20. Support rod; 21. Third piston chamber; 22. Third piston hole; 23. Airbag; 24. Vent hole; 25. Third piston rod; 26. Third piston plate; 27. Float; 28. First elastic component; 29. ​​Mounting plate; 30. Connecting rod; 31. Automatic positioning mechanism; 32. First piston cavity; 3101. Positioning cavity; 3102. First detection contact; 3103. Sliding hole; 3104. Fourth piston plate; 3105. Second detection contact; 3106. Positioning rod; 3107. Second elastic component; Detailed Implementation

[0037] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0038] Example 1

[0039] like Figures 1 to 13 As shown, a sampling machine for water body detection in water conservancy projects includes a mounting base 1. A left sealing cavity 8 and a right sealing cavity 10 are symmetrically mounted on both sides of the mounting base 1. A connecting rope 6 is fixedly installed at the middle position of the upper end of the mounting base 1, and a wire harness 7 is wrapped inside the connecting rope 6. A controller and a power module are installed inside the left sealing cavity 8. A first piston cavity 32 is opened on the mounting base 1, and a first piston plate 16 is slidably installed inside the first piston cavity 32. A driving component 13 for moving the first piston plate 16 is installed inside the right sealing cavity 10. The power end of the driving component 13 slidably passes through the right sealing cavity 10 and is connected and fixed to the first piston plate 16. A connecting base 3 is fixedly installed at the lower end of the mounting base 1. At least two linearly uniformly distributed sampling bottles 17 are detachably installed at the lower end of the connecting base 3. The sampling bottles 17 are sealed and connected to the first piston cavity 32 through a second piston cavity 4. An opening and closing device for opening and closing the second piston cavity 4 is provided on the connecting base 3.

[0040] The opening and closing device includes multiple circumferentially evenly distributed support rods 20 fixedly installed in the second piston chamber 4. A third piston chamber 21, coaxial with the second piston chamber 4, is disposed at the middle position of the multiple support rods 20. An air bladder 23 is fixedly disposed at the upper end of the third piston chamber 21, and a third piston rod 25 is fixedly disposed at the lower end of the third piston chamber 21. A float ball 27 is fixedly disposed at the lower end of the third piston rod 25. A third piston hole 22 is fixedly opened at the lower end of the third piston chamber 21. The rod 25 slides through the third piston hole 22 in a sealed manner. The upper end of the third piston cavity 21 is provided with a vent hole 24 that communicates with the airbag 23. The upper end of the third piston rod 25 is fixedly provided with a third piston plate 26, and the third piston plate 26 is slidably installed in the third piston cavity 21. A first elastic component 28 is provided between the third piston plate 26 and the third piston cavity 21. The first elastic component 28 is a return spring, and one end is connected and fixed to the third piston plate 26, and the other end is connected and fixed to the third piston cavity 21.

[0041] Specifically: There are four sampling bottles 17. When no sampling is being performed, there is a gap between the outer surface of the airbag 23 and the second piston chamber 4. During the sampling process, the sampling water flows into the sampling bottle 17 through the gap between the two. The second piston chamber passes through the connecting seat and its upper end is sealed and connected to the first piston chamber.

[0042] In actual operation: After the connecting rope 6 is lowered to the target water depth, the controller activates the drive component 13 in the right sealed cavity 10 to push the first piston plate 16 to slide in the first piston cavity 32. As needed, the corresponding sampling bottle 17 is opened, allowing water to enter the sampling bottle 17 through the second piston cavity 4. The float 27 in the opening and closing device rises with the water level, driving the third piston rod 25 to compress the return spring. The third piston plate compresses the gas in the third piston cavity 21 and enters the air bladder 23, causing the air bladder 23 to expand and seal the second piston cavity 4, thus achieving automatic closing of the sampling bottle 17. The multi-sampling bottle 17 design can realize layered sampling. The support rod 20 maintains the axial stability of the third piston cavity 21.

[0043] A mounting plate 29 is provided on the third piston cavity 21 below the vent 24, and a gap is reserved between the mounting plate 29 and the upper end face of the third piston cavity 21. The mounting plate 29 is connected and fixed to the upper end face of the third piston cavity 21 by multiple circumferentially evenly distributed connecting rods 30. An automatic positioning mechanism 31 corresponding to the third piston plate 26 is fixedly provided at the lower end of the mounting plate 29. The automatic positioning mechanism 31 is electrically connected to the controller. The automatic positioning mechanism 31 includes a positioning cavity 3101 fixedly installed on the mounting plate 29. A first detection contact 3102 is assembled at the top of the inner wall of the positioning cavity 3101. A fourth piston plate 3104 is slidably installed in the positioning cavity 3101. A second detection contact 3105 corresponding to the first detection contact 3102 is provided on the fourth piston plate 3104. A positioning rod 3106 is fixedly provided, extending out of the positioning cavity 3101 and corresponding to the third piston plate 26. The fourth piston plate 3104 has a second elastic component 3107 corresponding to the positioning cavity 3101. The lower end of the positioning cavity 3101 is provided with a sliding hole 3103 for the positioning rod 3106 to slide through. The second elastic component 3107 is movably fitted on the positioning rod 3106, with one end connected and fixed to the fourth piston plate 3104 and the other end connected and fixed to the positioning cavity 3101. The distance by which the positioning rod 3106 extends out of the positioning cavity 3101 is equal to the distance between the first detection contact 3102 and the second detection contact 3105. The second elastic component 3107 is a return spring. The first detection contact 3102 and the positioning cavity 3101, and the second detection contact 3105 and the third piston plate 26 are both insulated.

[0044] In actual operation: precise positioning control is achieved through the linkage of the fourth piston plate 3104 and the positioning rod 3106. When the third piston plate 26 rises to the working position, it pushes the positioning rod 3106 to retract, causing the fourth piston plate 3104 to compress the second elastic component 3107, making the second detection contact 3105 contact the first detection contact 3102, forming a closed loop signal feedback to the controller to confirm the positioning status. The controller controls the drive component 13 to drive the first piston plate 16 to reset. When the third piston plate 26 moves down, the second elastic component 3107 pushes the fourth piston plate 3104 to reset, causing the detection contact to separate. The equal design of the extension length of the positioning rod 3106 and the contact spacing ensures that the contact triggering and mechanical displacement are synchronized. The mounting plate 29 supported by the connecting rod 30 keeps the positioning cavity 3101 stable. The gap structure on the lower side of the vent 24 ensures air pressure balance, minimizing the sliding resistance of the fourth piston plate 3104.

[0045] Example 2:

[0046] Based on Embodiment 1, the opening and closing device is a waterproof solenoid valve and is electrically connected to the controller.

[0047] Example 3

[0048] Based on Embodiment 1 or Embodiment 2, the connecting seat 3 has an annular groove 5 on the outer ring of the second piston chamber 4, and the outer ring of the annular groove 5 in the connecting seat 3 has an internal thread. A connecting part 18 is fixedly provided on the sampling bottle 17, and the connecting part 18 has an external thread corresponding to the internal thread. An annular sealing gasket 19 is fixedly provided at the upper end of the sampling bottle 17. The connecting part 18 is rotatably installed in the annular groove 5. A sealing pipe 9 for the wire harness 7 to pass through is provided between the left sealing cavity 8 and the connecting rope 6. The left sealing cavity 8 and the right sealing cavity 10 are connected by a connecting pipe 12. The first piston cavity 32 passes through one end of the mounting base 1. The mounting base 1 has a first piston hole 2 communicating with the first piston cavity 32. The right sealing cavity 10 has a piston hole. A first piston rod 15 is fixedly mounted on the first piston plate 16 and slides through the first piston hole 2. The power end of the driving component 13 is fixedly mounted with a piston rod that slides through the piston hole. The first piston rod 15 and the piston rod are connected and fixed through a connecting plate 14. The driving component 13 is a hydraulic cylinder. The hydraulic cylinder is installed in the right sealing cavity 10 by bolts and nuts, and its power end is connected and fixed to the piston rod.

[0049] In actual operation: the hydraulic cylinder drives the piston rod to link the first piston rod 15, which in turn drives the first piston plate 16 to reciprocate within the first piston cavity 32. By controlling the position of the first piston plate 16 within the first piston cavity 32, the opening of different sampling bottles 17 can be controlled, achieving the function of multi-depth sampling. After sampling, the first piston plate 16 is driven to reset to prevent liquid from remaining in the first piston cavity 32 and causing contamination from multiple samplings. The sampling bottle 17 is quickly locked to the annular groove 5 through the threaded connection part 18. The annular sealing gasket 19 ensures the interface sealing, making it convenient to replace and store the sampling bottle 17 and preventing the sampling bottle 17 from being reused without cleaning, which would cause sampling water contamination. The sealing pipe 9 protects the wire harness 7 from water corrosion, and the connecting pipe 12 connects the left sealing cavity 8 and the right sealing cavity 10.

[0050] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications may be made to this utility model without departing from its spirit and scope. All such changes and modifications fall within the scope of protection of this utility model as defined by the appended claims and their equivalents.

Claims

1. A sampling machine for water body detection in water conservancy projects, comprising a mounting base (1), wherein a left sealing cavity (8) and a right sealing cavity (10) are symmetrically mounted on both sides of the mounting base (1), a connecting rope (6) is fixedly arranged at the middle position of the upper end of the mounting base (1), a wire harness (7) is wrapped inside the connecting rope (6), and a controller and a power module are arranged inside the left sealing cavity (8), characterized in that: The mounting base (1) is provided with a first piston cavity (32), and a first piston plate (16) is slidably installed in the first piston cavity (32). A driving component (13) for moving the first piston plate (16) is provided in the right sealing cavity (10). The power end of the driving component (13) slidably passes through the right sealing cavity (10) and is connected and fixed to the first piston plate (16). A connecting seat (3) is fixedly provided at the lower end of the mounting base (1). At least two linearly uniformly distributed sampling bottles (17) are detachably installed at the lower end of the connecting seat (3). The sampling bottles (17) are sealed and connected to the first piston cavity (32) through the second piston cavity (4). An opening and closing device for opening and closing the second piston cavity (4) is provided on the connecting seat (3).

2. A sampling machine for water body detection in water conservancy projects according to claim 1, characterized in that, The opening and closing device includes multiple circumferentially evenly distributed support rods (20) fixedly installed in the second piston chamber (4). A third piston chamber (21) coaxial with the second piston chamber (4) is provided at the middle position of the multiple support rods (20). An air bag (23) is fixedly provided at the upper end of the third piston chamber (21). A third piston rod (25) is fixedly provided at the lower end of the third piston chamber (21). A float ball (27) is fixedly provided at the lower end of the third piston rod (25).

3. A sampling machine for water body detection in water conservancy projects according to claim 2, characterized in that, The lower end of the third piston cavity (21) is fixedly provided with a third piston hole (22), the third piston rod (25) slides through the third piston hole (22) in a sealed manner, the upper end of the third piston cavity (21) is provided with a vent hole (24) communicating with the airbag (23), the upper end of the third piston rod (25) is fixedly provided with a third piston plate (26), and the third piston plate (26) is slidably installed in the third piston cavity (21), and a first elastic component (28) is provided between the third piston plate (26) and the third piston cavity (21).

4. A sampling machine for water body detection in water conservancy projects according to claim 3, characterized in that, An mounting plate (29) is provided on the third piston cavity (21) below the vent (24), and a gap is reserved between the mounting plate (29) and the upper end face of the third piston cavity (21). The mounting plate (29) is connected and fixed to the upper end face of the third piston cavity (21) by multiple circumferentially evenly distributed connecting rods (30). An automatic positioning mechanism (31) corresponding to the third piston plate (26) is fixedly provided at the lower end of the mounting plate (29). The automatic positioning mechanism (31) is electrically connected to the controller.

5. A sampling machine for water body detection in water conservancy projects according to claim 4, characterized in that, The automatic positioning mechanism (31) includes a positioning cavity (3101) fixedly installed on the mounting plate (29). A first detection contact (3102) is assembled at the top of the inner wall of the positioning cavity (3101). A fourth piston plate (3104) is slidably installed in the positioning cavity (3101). A second detection contact (3105) corresponding to the first detection contact (3102) is provided on the fourth piston plate (3104). A positioning rod (3106) extending out of the positioning cavity (3101) and corresponding to the third piston plate (26) is fixedly provided on the fourth piston plate (3104). A second elastic component (3107) corresponding to the positioning cavity (3101) is provided on the fourth piston plate (3104).

6. A sampling machine for water body detection in water conservancy projects according to claim 5, characterized in that, The lower end of the positioning cavity (3101) is provided with a sliding hole (3103) for the positioning rod (3106) to slide through. The second elastic component (3107) is movably fitted on the positioning rod (3106), and one end is connected and fixed to the fourth piston plate (3104), and the other end is connected and fixed to the positioning cavity (3101). The distance by which the positioning rod (3106) extends out of the positioning cavity (3101) is equal to the distance between the first detection contact (3102) and the second detection contact (3105).

7. A sampling machine for water body detection in hydraulic engineering projects according to any one of claims 1-6, characterized in that, The connecting seat (3) has an annular groove (5) on the outer ring of the second piston chamber (4), and the outer ring of the annular groove (5) in the connecting seat (3) has an internal thread. The sampling bottle (17) is fixedly provided with a connecting part (18), and the connecting part (18) has an external thread corresponding to the internal thread.

8. A sampling machine for water body detection in water conservancy projects according to claim 7, characterized in that, An annular sealing gasket (19) is fixedly provided at the upper end of the sampling bottle (17).

9. A sampling machine for water body detection in water conservancy projects according to claim 8, characterized in that, A sealed pipe (9) for the wire harness (7) to pass through is provided between the left sealed cavity (8) and the connecting rope (6), and the left sealed cavity (8) and the right sealed cavity (10) are connected by a connecting pipe (12).

10. A sampling machine for water body detection in water conservancy projects according to claim 9, characterized in that, The first piston cavity (32) passes through one end of the mounting base (1). The mounting base (1) has a first piston hole (2) communicating with the first piston cavity (32). The right sealing cavity (10) has a piston hole. The first piston plate (16) has a first piston rod (15) that slides through the first piston hole (2) and is sealed. The power end of the drive component (13) has a piston rod that slides through the piston hole and is sealed. The first piston rod (15) and the piston rod are connected and fixed through a connecting plate (14).

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