Discharging structure, submerged servomotor sealing device and submerged servomotor

Abstract

The invention discloses a discharging structure, a submerged servomotor sealing device and a submerged servomotor, and relates to the technical field of hydroelectric power generation. A guide cylinder is connected with a plugging plate, a transfer groove is formed in the guide cylinder and communicates with a discharging pipe, a pushing structure is located in the transfer groove, and liquid can enter the transfer groove through the pushing structure and then is discharged through the discharging pipe; the driving assembly is used for driving the pushing structure to move close to the discharging pipe, and centralized collection and discharging of liquid are achieved. The covering structure and the blocking plate are connected to form an air chamber, a push plate is arranged in the air chamber and slidably connected with the covering structure, one end of the piston rod is connected with the push plate, the piston rod is located on the inner side of the guide cylinder and can slide relative to the guide cylinder, and liquid generated when the piston rod moves can enter the transfer groove through the push structure. And then the gas is discharged through the discharge pipe. The purpose that the submerged servomotor carries out liquid centralized collection and guide discharge is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of hydropower generation, and in particular to a discharge structure, a submersible servomotor sealing device and a submersible servomotor. Background Art

[0002] The submersible servo is a power actuator designed specifically for underwater or liquid media environments. Through hydraulic, electric or pneumatic drive, it achieves precise control of turbine blades, guide vanes, valves, gates and other equipment, while ensuring long-term sealing reliability in high-pressure, corrosive media.

[0003] Due to its waterproof, pressure-resistant and corrosion-resistant properties, the underwater servomotor can be widely used in scenarios requiring power transmission and precise control in underwater or liquid medium environments.

[0004] At present, when the underwater relays on the market are in use, a small amount of leakage is inevitable when the piston rod moves inside the sealing ring. When the leakage reaches a specified amount, water will enter the air chamber and cause a malfunction, making the existing underwater relay unable to collect and guide the liquid for discharge. Therefore, a device is needed to improve the above problem. Summary of the Invention

[0005] The object of the present invention is to provide a discharge structure, a submerged servomotor sealing device and a submerged servomotor, which realize the purpose of the submerged servomotor for centralized collection and guided discharge of liquid.

[0006] To achieve the above object, the present invention provides the following solutions:

[0007] The present invention provides a discharge structure, comprising: a centralized component and a driving component; the centralized component comprises a blocking plate, a guide cylinder and a pushing structure, the guide cylinder is connected to the blocking plate, a transfer trough is provided in the guide cylinder, the transfer trough is communicated with a discharge pipe, the pushing structure is located in the transfer trough, liquid can enter the transfer trough through the pushing structure, and then be discharged from the discharge pipe; the driving component is used to drive the pushing structure to move close to the discharge pipe, thereby realizing centralized collection and discharge of the liquid.

[0008] In some specific embodiments, a first sealing structure and a second sealing structure are provided in the guide cylinder, and the transfer groove is located between the first sealing structure and the second sealing structure.

[0009] In some specific schemes, there are two pushing structures, and the two pushing structures are symmetrically arranged on both sides of the discharge pipe; the pushing structure includes a bracket and a matching block, the bracket is connected to the inner wall of the transfer trough by a first elastic element, the bracket is in contact with the transfer trough and can slide relative to each other, the matching block is arranged on the bracket, a second elastic element is arranged between the matching block and the bracket, and a protrusion matching the matching block is arranged in the transfer trough; the matching block can contact the protrusion so that a channel for liquid flow is formed between the matching block and the inner wall of the transfer trough; when the matching block is separated from the protrusion, the matching block contacts the inner wall of the transfer trough, and the channel is closed.

[0010] In some specific schemes, the pushing structure also includes a cross frame and a connecting rope, the cross frame is connected to the bracket, a first sliding groove is opened on the guide cylinder along the axial direction of the guide cylinder, the cross frame is slidably connected to the first sliding groove, one end of the connecting rope is connected to the cross frame, and the other end of the connecting rope is connected to the guide cylinder. The driving component applies force to the connecting rope, so that the cross frame drives the bracket to move along the axial direction of the guide cylinder, thereby realizing the approach or distance between the pushing structure and the discharge pipe.

[0011] In some specific schemes, the driving assembly also includes a pressure plate and an airbag, the pressure plate is arranged on the airbag, and a reset elastic element is arranged in the airbag, and the reset elastic element can realize the reset of the airbag; when the pressure plate moves close to the blocking plate, the pressure plate presses the airbag, and the gas in the airbag drives the force structure to move, and the pushing structure approaches the discharge pipe; when the airbag is reset, the pushing structure moves away from the discharge pipe.

[0012] In some specific schemes, the force-applying structure includes an air cylinder, a plunger rod, a connecting base and a contact wheel. The air cylinder is connected to the airbag, and the gas in the air cylinder can drive the plunger rod to move. The plunger rod is connected to the contact wheel through the connecting base, and the contact wheel is used to push the pushing structure. A second sliding groove is provided on the sealing plate, and the wheel frame of the contact wheel is slidably connected to the second sliding groove.

[0013] In some specific embodiments, an extension tube is further included, wherein an extension cavity is provided in the extension tube, the extension cavity is communicated with the discharge pipe, and the extension cavity is connected to the negative pressure structure.

[0014] The present invention also provides a submersible servomotor sealing device, comprising: a covering structure, a push plate, a piston rod and the discharge structure, wherein the covering structure and the sealing plate are connected to form an air chamber, the push plate is arranged in the air chamber, the push plate is slidably connected to the covering structure, one end of the piston rod is connected to the push plate, the piston rod is located on the inner side of the guide cylinder, the piston rod and the guide cylinder can slide relative to each other, and the liquid generated by the piston rod when moving can enter the transfer tank through the pushing structure and then be discharged from the discharge pipe.

[0015] In some specific embodiments, a first rack is provided at the other end of the piston rod, a gear is provided on the sealing plate, the gear is rotatably connected to the sealing plate, the drive assembly is connected to the second rack, and both the first rack and the second rack are engaged with the gear.

[0016] The present invention also provides a submersible servomotor, comprising the submersible servomotor sealing device.

[0017] Compared with the prior art, the present invention has achieved the following technical effects:

[0018] The present invention allows leaked liquid to enter the interior of the transfer tank through a pushing structure. At the same time, the discharge pipe is connected to the transfer tank, so that the liquid can flow out. In addition, the driving component drives the pushing structure so that the liquid accumulated at the bottom end of the transfer tank is pushed to the discharge pipe, which facilitates the liquid to quickly enter the interior of the discharge pipe and completes the work of centralized liquid guidance and discharge. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 An axonometric diagram of a submersible servomotor in some embodiments of the present invention;

[0021] Figure 2 An axonometric view of a covering structure in some embodiments of the present invention;

[0022] Figure 3 An axonometric view of a push plate, a piston rod, and a first rack in some embodiments of the present invention;

[0023] Figure 4 An axonometric diagram of a discharge structure in some embodiments of the present invention;

[0024] Figure 5An axonometric view of the guide cylinder, the pushing structure, and the discharge pipe in some embodiments of the present invention (guide cylinder cutaway);

[0025] Figure 6 Pushing structural axonometric drawings in some embodiments of the present invention;

[0026] Figure 7 An axonometric view of a blocking plate and a drive assembly in some embodiments of the present invention (with the airbag cut away);

[0027] Figure 8 An axonometric view of the force-applying structure in some embodiments of the present invention (with the blocking plate cut away);

[0028] Figure 9 An axonometric diagram of the discharge pipe, connecting pipe, and negative pressure structure in some embodiments of the present invention;

[0029] In the figure: 1-sealing plate, 2-guide cylinder, 3-transfer trough, 4-discharge pipe, 5-first sealing structure, 6-second sealing structure, 7-cross bar, 8-bracket, 9-matching block, 10-first elastic element, 11-second elastic element, 12-bump, 13-cross frame, 14-connecting rope, 15-gear bracket, 16-pressure plate, 17-air bag, 18-guide frame, 19-reset elastic element, 20-air cylinder, 21-plunger rod, 22-connecting base frame, 23-contact wheel, 24-second slide groove, 25-extension tube, 26-negative pressure structure, 27-covering structure, 28-push plate, 29-piston rod, 30-air chamber, 31-first rack, 32-gear, 33-second rack, 34-connecting pipe. DETAILED DESCRIPTION

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0031] The object of the present invention is to provide a discharge structure, a submerged servomotor sealing device and a submerged servomotor, which realize the purpose of the submerged servomotor for centralized collection and guided discharge of liquid.

[0032] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0033] Example 1

[0034] like Figures 1 to 9As shown, this embodiment provides a discharge structure, including: a centralized component and a driving component; the centralized component includes a blocking plate 1, a guide cylinder 2 and a pushing structure, the guide cylinder 2 is connected to the blocking plate 1, the guide cylinder 2 is set through the blocking plate 1, a transfer trough 3 is set in the guide cylinder 2, the transfer trough 3 is provided with a connecting hole, the connecting hole of the transfer trough 3 is connected to the discharge pipe 4, the pushing structure is located in the transfer trough 3, the liquid can enter the transfer trough 3 through the pushing structure, and then be discharged from the discharge pipe 4; the driving component is used to drive the pushing structure to move close to the discharge pipe 4 to achieve centralized collection and discharge of the liquid. In this embodiment, the leaked liquid enters the interior of the transfer trough 3 through the pushing structure, and at the same time, the discharge pipe 4 is connected to the transfer trough 3 so that the liquid can flow out, and the driving component drives the pushing structure so that the liquid accumulated at the bottom end of the transfer trough 3 is pushed to the discharge pipe 4, so that the liquid can quickly enter the interior of the discharge pipe 4 and complete the work of centralized guided discharge of the liquid.

[0035] In some embodiments, a first sealing structure 5 and a second sealing structure 6 are provided in the guide cylinder 2 , and the transfer tank 3 is located between the first sealing structure 5 and the second sealing structure 6 .

[0036] In some embodiments, the discharge pipe 4 is arranged in the middle of the transfer trough 3, and the discharge pipe 4 is connected to the lowest point of the transfer trough 3, the first sealing structure 5 and the second sealing structure 6 are symmetrically arranged on both sides of the discharge pipe 4, and the first sealing structure 5 and the second sealing structure 6 are both fixedly connected to the guide tube 2, and the first sealing structure 5 and the second sealing structure 6 both include two grid rings arranged along the axial direction of the guide tube 2.

[0037] In some embodiments, there are two pushing structures, and the two pushing structures are symmetrically arranged on both sides of the discharge pipe 4. A cross bar 7 is arranged in the guide cylinder 2, and the cross bar 7 is parallel to the axial direction of the guide cylinder 2. The pushing structure is slidably connected to the cross bar 7.

[0038] In some embodiments, the pushing structure includes a bracket 8 and a mating block 9. The bracket 8 is connected to the inner wall of the transfer tank 3 by a first elastic element 10, which is preferably a spring. The bracket 8 is in contact with the transfer tank 3 and can slide relative to it. The mating block 9 is provided with a key, and a slot is provided on the bracket 8. The mating block 9 and the bracket 8 are linked by the key and the slot. A second elastic element 11 is provided between the mating block 9 and the bracket 8, and the second elastic element 11 is preferably a spring. A protrusion 12 matching the mating block 9 is provided in the transfer tank 3, and the two protrusions 12 are symmetrically arranged on both sides of the discharge pipe 4. The surface of the protrusion 12 is provided with a 45° slope; the mating block 9 can contact the protrusion 12, and the mating block 9 is separated from the inner wall of the transfer tank 3, so that a channel for liquid flow is formed between the mating block 9 and the inner wall of the transfer tank 3; when the mating block 9 is separated from the protrusion 12, the mating block 9 contacts the inner wall of the transfer tank 3, and the channel is closed.

[0039] In some embodiments, the pushing structure also includes two cross frames 13 and two connecting ropes 14. The two cross frames 13 are respectively connected to the two ends of the bracket 8, and the two cross bars 7 are symmetrically arranged at the two ends of the bracket 8. A first sliding groove is opened on the guide cylinder 2 along the axial direction of the guide cylinder 2. The cross frame 13 is slidingly connected to the first sliding groove. The two connecting ropes 14 in the same pushing structure are symmetrically arranged on both sides of the bracket 8. One end of the connecting rope 14 is connected to the cross frame 13, and the other end of the connecting rope 14 is connected to the guide cylinder 2. By applying force to the connecting rope 14, the cross frame 13 drives the bracket 8 to move along the axial direction of the guide cylinder 2, thereby realizing the approach or distance between the pushing structure and the discharge pipe 4.

[0040] In some embodiments, the driving assembly also includes a pressure plate 16 and an airbag 17. The pressure plate 16 is arranged on the airbag 17, and the pressure plate 16 is slidably connected to the guide frame 18 at the front end of the sealing plate 1. The guide frame 18 is located below the airbag 17, and a limiting protrusion is provided on the guide frame 18. The airbag 17 is arranged at the front end of the sealing plate 1, and the second rack 33 is fixedly connected to the pressure plate 16. The second rack 33 is arranged parallel to the first rack 31. A reset elastic element 19 is provided in the airbag 17. The reset elastic element 19 is preferably a reset spring, and the reset elastic element 19 can realize the reset of the airbag 17; when the push plate 28 moves close to the sealing plate 1, the pressure plate 16 presses the airbag 17, and the gas in the airbag 17 drives the force structure to move, and the pushing structure approaches the discharge pipe 4; when the airbag 17 is reset, the pushing structure moves away from the discharge pipe 4.

[0041] In some embodiments, the force-applying structure includes an air cylinder 20, a plunger rod 21, a connecting base 22 and a contact wheel 23. The air cylinder 20 is L-shaped, and the interior of the air cylinder 20 is hollow. The air cylinder 20 is connected to the airbag 17. The gas in the air cylinder 20 can drive the plunger rod 21 to move. The plunger rod 21 is connected to the contact wheel 23 through the connecting base 22. There are two connecting bases 22. The two connecting bases 22 are symmetrically arranged on both sides of the plunger rod 21. Each connecting base 22 is connected to two contact wheels 23. The two contact wheels 23 are symmetrically arranged on both sides of the connecting base 22. The contact wheel 23 is rotatably connected to the wheel frame. The contact wheel 23 corresponds to the connecting rope 14 one by one, and the contact wheel 23 is in contact with the connecting rope 14. A second slide groove 24 is provided on the blocking plate 1. The wheel frame of the contact wheel 23 is slidably connected to the second slide groove 24, and the second slide groove 24 is perpendicular to the first slide groove.

[0042] In some embodiments, an extension tube 25 is further included, in which an extension cavity is provided. The extension cavity is connected to the discharge pipe 4, and the extension cavity is connected to the negative pressure structure 26. The negative pressure structure 26 is started and connected to the interior of the extension cavity through the negative pressure structure 26, so that the negative pressure structure 26 can form a negative pressure inside the extension cavity, so that the extension cavity can quickly absorb the liquid inside the discharge pipe 4, thereby completing the task of quickly draining the liquid.

[0043] In this embodiment, the transfer tank 3 is located between the first sealing structure 5 and the second sealing structure 6, so that the leaked liquid can be concentrated into the interior of the transfer tank 3. At the same time, it is connected to the transfer tank 3 through the connecting pipe 34, so that the liquid can flow outward. In addition, the piston rod 29 drives the first rack 31 to move when it moves, and the first rack 31 drives the gear 32 to rotate, so that the pressure plate 16 squeezes the airbag 17, so that the contact wheel 23 can move downward, and the squeezing connecting rope 14 pulls the bracket 8 toward the center of the transfer tank 3. The liquid accumulated at the bottom end of the transfer tank 3 can be pushed to the internal center of the transfer tank 3, which facilitates the liquid to quickly enter the interior of the connecting pipe 34 and complete the liquid guided discharge work.

[0044] When the bracket 8 of this embodiment is reset, it can drive the mating stopper 9 to contact the protrusion 12. Through the alignment of the protrusion 12 and the mating stopper 9, the mating stopper 9 can be displaced upward along the surface of the protrusion 12, so that the mating stopper 9 can be misaligned with the bracket 8, causing the mating stopper 9 to be out of contact with the bottom end of the inner wall of the transfer tank 3, so that the liquid inside the transfer tank 3 can flow normally into the interior of the connecting pipe 34, completing the task of centralized liquid collection.

[0045] Example 2

[0046] like Figures 1 to 9 As shown, this embodiment provides a submersible relay sealing device, including: a covering structure 27, a push plate 28, a piston rod 29 and the discharge structure of embodiment one, the covering structure 27 and the sealing plate 1 are connected to form an air chamber 30, a push plate 28 is provided in the air chamber 30, the push plate 28 is slidably connected to the covering structure 27, one end of the piston rod 29 is connected to the push plate 28, the piston rod 29 is located on the inner side of the guide cylinder 2, the piston rod 29 and the guide cylinder 2 can slide relative to each other, the first sealing structure 5 and the second sealing structure 6 are arranged between the piston rod 29 and the guide cylinder 2, the outer ring of the piston rod 29 is respectively fitted with the inner ring of the first sealing structure 5 and the second sealing structure 6, the liquid generated by the piston rod 29 when moving can enter the transfer tank 3 through the pushing structure, and then be discharged by the discharge pipe 4.

[0047] In some embodiments, a first rack 31 is provided at the other end of the piston rod 29, a gear bracket 15 is provided on the sealing plate 1, a gear 32 is provided on the gear bracket 15, the gear 32 is rotatably connected to the gear bracket 15, the pressure plate 16 of the drive assembly is connected to the second rack 33, and the first rack 31 and the second rack 33 are both engaged with the gear 32.

[0048] When in use, first connect the external power execution system with the air chamber 30, so that when the power execution system is running, it can drive the push plate 28 to move. When the push plate 28 moves, it can drive the piston rod 29 to move inside the guide cylinder 2. Through the arrangement of the first sealing structure 5 and the second sealing structure 6, the amount of liquid leakage when the piston rod 29 moves can be greatly reduced. At this time, when a small amount of liquid leaks through the first sealing structure 5 and the second sealing structure 6, it is transferred through the transfer groove 3 arranged between the first sealing structure 5 and the second sealing structure 6, and the bracket 8 remains In normal state, the first elastic element 10 near the first sealing structure 5 can pull the bracket 8 close to the first sealing structure 5, and the first elastic element 10 near the second sealing structure 6 can pull the bracket 8 close to the second sealing structure 6, so that when the matching block 9 contacts the protrusion 12, the matching block 9 can move upward along the top inclined surface of the protrusion 12, so that the leaked liquid can enter the transfer tank 3 through the channel formed by the matching block 9 and the inner wall of the transfer tank 3. At the same time, it is connected to the transfer tank 3 through the connecting pipe 34, so that the liquid can be discharged through the connecting pipe 34 and the discharge pipe 4;When the piston rod 29 drives the push plate 28 to move in the direction close to the blocking plate 1, the piston rod 29 drives the first rack 31 to move at the bottom end of the gear 32, so that the gear 32 rotates, and then drives the second rack 33 to move, so that the second rack 33 can drive the pressure plate 16 to move in the direction close to the blocking plate 1, so that the pressure plate 16 can compress the airbag 17, and the airbag 17 is connected with the inside of the gas cylinder 20, so that the gas inside the airbag 17 can enter the inside of the gas cylinder 20, so that the plunger rod 21 can drive the connecting base 22 to move downward. When the connecting base 22 moves downward, it can drive the contact wheel 23 to contact the connecting rope 14, and the connecting The end of the rope 14 away from the cross frame 13 is connected to the inside of the blocking plate 1, so that when the connecting rope 14 is pressed, the connecting rope 14 can drive the cross frame 13 to move toward the inner center (or discharge pipe 4) of the transfer trough 3. At the same time, the cross frame 13 and the first slide slot slide intercept, so that the bracket 8 moves in a straight line. When the bracket 8 moves toward the center direction of the transfer trough 3, it can drive the matching block 9 to move out from the top of the protrusion 12, and the matching block 9 is separated from the protrusion 12. At this time, the matching block 9 is driven by the second elastic element 11 to move downward until it is flush with the outer ring of the bracket 8. The keys at both ends of the bottom of the matching block 9 are engaged with the inside of the bracket 8. The locking chute slides in the slot, so that the matching block 9 can be ensured to move downward in a straight line. When the bracket 8 moves subsequently, the matching block 9 and the bracket 8 fit with the bottom end of the inner wall of the transfer chute 3, and the liquid accumulated at the bottom end of the inner wall of the transfer chute 3 is gathered to the inner center of the transfer chute 3. Then, when the contact wheel 23 moves downward to the limit position, the connecting rope 14 can pull the bracket 8 to fit the top of the connecting pipe 34, so that the accumulated liquid at the bottom end of the inner wall of the transfer chute 3 can quickly flow to the inside of the connecting pipe 34 for discharge. Then, when the piston rod 29 drives the push plate 28 to move away from the blocking plate 1, the first rack 31 can move at the gear 32 The bottom end moves toward the rear end, allowing the gear 32 to drive the second rack 33 toward the front end, causing the pressure plate 16 to disengage from the airbag 17. At this time, the return spring slowly resets the airbag 17, allowing it to absorb the gas inside the cylinder 20, driving the plunger rod 21, the connecting base 22, and the contact wheel 23 upward. At the same time, when the contact wheel 23 disengages from the connecting rope 14, the elasticity of the first elastic element 10 resets the bracket 8, causing the mating stopper 9 to move again to the top of the protrusion 12. The liquid leaked between the first sealing structure 5 and the second sealing structure 6 flows into the interior of the transfer tank 3 again.

[0049] Example 3

[0050] like Figures 1 to 9 As shown, this embodiment provides a submersible servomotor, including the submersible servomotor sealing device of the second embodiment.

[0051] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only intended to help understand the method and core concept of the present invention. At the same time, those skilled in the art will find that the specific implementation methods and application scopes may vary based on the concept of the present invention. In summary, the contents of this specification should not be construed as limiting the present invention.

Claims

1. A discharge structure, characterized in that: include: Centralized component and drive component; the centralized component includes a blocking plate, a guide cylinder and a pushing structure, the guide cylinder is connected to the blocking plate, a transfer trough is provided in the guide cylinder, the transfer trough is connected to the discharge pipe, the pushing structure is located in the transfer trough, the liquid can enter the transfer trough through the pushing structure, and then be discharged from the discharge pipe; the driving component is used to drive the pushing structure to move close to the discharge pipe to realize the centralized collection and discharge of the liquid.

2. The discharge structure according to claim 1, characterized in that: A first sealing structure and a second sealing structure are provided in the guide cylinder, and the transfer groove is located between the first sealing structure and the second sealing structure.

3. The discharge structure according to claim 1, characterized in that: There are two pushing structures, and the two pushing structures are symmetrically arranged on both sides of the discharge pipe; the pushing structure includes a bracket and a matching block, the bracket is connected to the inner wall of the transfer trough by a first elastic element, the bracket is in contact with the transfer trough and can slide relative to each other, the matching block is arranged on the bracket, a second elastic element is arranged between the matching block and the bracket, and a protrusion matching the matching block is arranged in the transfer trough; the matching block can contact the protrusion so that a channel for liquid flow is formed between the matching block and the inner wall of the transfer trough; when the matching block is separated from the protrusion, the matching block contacts the inner wall of the transfer trough, and the channel is closed.

4. The discharge structure according to claim 3, characterized in that: The pushing structure also includes a cross frame and a connecting rope. The cross frame is connected to the bracket. A first sliding groove is opened on the guide cylinder along the axial direction of the guide cylinder. The cross frame is slidably connected to the first sliding groove. One end of the connecting rope is connected to the cross frame, and the other end of the connecting rope is connected to the guide cylinder. The driving component applies force to the connecting rope, so that the cross frame drives the bracket to move along the axial direction of the guide cylinder, thereby realizing the approach or distance between the pushing structure and the discharge pipe.

5. The discharge structure according to claim 1, characterized in that: The driving assembly also includes a pressure plate and an airbag, wherein the pressure plate is arranged on the airbag, and a reset elastic element is arranged in the airbag, and the reset elastic element can realize the reset of the airbag; when the pressure plate moves close to the blocking plate, the pressure plate presses the airbag, and the gas in the airbag drives the force structure to move, and the pushing structure approaches the discharge pipe; when the airbag is reset, the pushing structure moves away from the discharge pipe.

6. The discharge structure according to claim 5, characterized in that: The force-applying structure includes an air cylinder, a plunger rod, a connecting base and a contact wheel. The air cylinder is connected to the airbag, and the gas in the air cylinder can drive the plunger rod to move. The plunger rod is connected to the contact wheel through the connecting base. The contact wheel is used to push the pushing structure. A second sliding groove is provided on the sealing plate, and the wheel frame of the contact wheel is slidably connected to the second sliding groove.

7. The discharge structure according to claim 1, characterized in that: It also includes an extension pipe, in which an extension cavity is provided. The extension cavity is communicated with the discharge pipe, and the extension cavity is connected to the negative pressure structure.

8. A submersible servo sealing device, characterized in that: include: A covering structure, a push plate, a piston rod and the discharge structure according to any one of claims 1 to 7, wherein the covering structure and the sealing plate are connected to form an air chamber, the push plate is arranged in the air chamber, the push plate is slidably connected to the covering structure, one end of the piston rod is connected to the push plate, the piston rod is located on the inner side of the guide cylinder, the piston rod and the guide cylinder can slide relative to each other, and the liquid generated by the piston rod when moving can enter the transfer tank through the pushing structure and then be discharged from the discharge pipe.

9. The underwater servomotor sealing device according to claim 8, characterized in that: A first rack is provided at the other end of the piston rod, a gear is provided on the sealing plate, the gear is rotatably connected to the sealing plate, the driving assembly is connected to the second rack, and both the first rack and the second rack are engaged with the gear.

10. A submersible servo, characterized in that: The invention comprises the underwater servomotor sealing device according to any one of claims 8 to 9.

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