Water leakage prevention water outlet device

Abstract

The invention provides a water leakage prevention water outlet device. The water leakage prevention water outlet device comprises a water feeding pipe, a limiting ring, a blocking ball, a spring and an adjusting mechanism. The water feeding pipe is provided with a water inlet end and a water outlet end; the water inlet end of the water feeding pipe is communicated with a water conveying pipe of the automatic water feeding device; the limiting plate is connected with the water outlet end of the water feeding pipe, and a water outlet hole is formed in the limiting plate; the blocking bead is arranged in the water feeding pipe and can block the water outlet hole after moving in the center line direction of the water feeding pipe, the spring is arranged in the water feeding pipe, and one end of the spring abuts against the blocking bead. The adjusting mechanism adjusts the thrust applied to the spring in real time according to the change of external air pressure, so that the thrust applied to the plugging bead by the spring is changed, and then the thrust is counteracted with the thrust applied to the plugging bead from the outside by the external air pressure; the blocking ball can be kept at the water outlet of the limiting plate under the condition that no experimental animal licks the blocking ball, the water outlet is blocked, water leakage is avoided, and the environment in the simulation cabin is maintained.

Description

Technical Field

[0001] The present invention relates to the technical field of animal water feeding, and particularly relates to a water outlet device that prevents water leakage. Background Art

[0002] In plateau medical research, using a simulation chamber to simulate the plateau low-pressure environment and study the pathogenesis of altitude sickness in animals under this environment is a conventional experimental method. Experimental animals are placed in the simulation chamber for experiments. Since then, the experimental animals are isolated from the outside world, and an automatic water feeding device and an automatic feeding device are used to feed water and food to the experimental animals. The conventional automatic water feeding device uses a suction head to discharge water. A channel is provided in the suction head, and a spring and a blocking bead are provided in the channel. The end port of the suction head contracts inward to prevent the blocking bead from slipping out from there. One end of the spring presses against the blocking bead and makes the blocking bead partially exposed outside the end of the suction head. When the experimental animal drinks water, it licks the blocking bead outside the end of the suction head, pushing the blocking bead to retract, so that the water in the channel flows out from the end of the suction head.

[0003] It is found in practice that the spring provided in the channel of the suction head not only needs to press the blocking bead against the end of the suction head so that the blocking bead can block the end of the suction head to prevent water from flowing out, but also needs to pay attention that the elastic force of the spring cannot be too large to avoid that the experimental animal cannot open the channel by licking the blocking bead when it needs to drink water; this makes the elastic force of the spring acting on the blocking bead at this place smaller. As the experiment progresses, the water feeding device is in the simulation chamber, and the simulated plateau low pressure and plain high pressure in the simulation chamber are converted. The air pressure acts on the blocking bead at the end of the suction head. When the water feeding device is in the plateau low-pressure environment, the spring presses the blocking bead against the end of the suction head, and the thrust of the spring on the blocking bead is appropriate, and the suction head works normally; when the environment switches to the plain high pressure, the thrust of the spring on the blocking bead from the inside does not change, but the high pressure acts on the blocking bead from the outside, causing the blocking bead to retract into the suction head channel, resulting in water leakage from the suction head of the automatic water feeding device, wetting the experimental chamber mat, and the experiment cannot proceed smoothly because the experimental animal lacks water after the water leakage. Summary of the Invention

[0004] Aiming at the deficiencies in the prior art, the present invention provides a water outlet device that prevents water leakage, thereby solving or at least alleviating one or more of the above problems and other problems existing in the prior art.

[0005] The present invention provides a water outlet device that prevents water leakage, including:

[0006] A water feeding pipe, having a water inlet end and a water outlet end;

[0007] A limiting plate, connected to the water outlet end of the water feeding pipe, and having a water outlet hole provided thereon;

[0008] A plugging bead, which is arranged in the water feeding pipe and can move along the central line direction of the water feeding pipe to block the water outlet hole;

[0009] A spring, which is arranged in the water feeding pipe and has one end abutted against the plugging bead; and

[0010] An adjusting mechanism, which is connected to the other end of the spring and applies different degrees of thrust to the spring according to different external air pressures.

[0011] Preferably, two or more induction holes are formed in the water feeding pipe;

[0012] The adjusting mechanism includes:

[0013] An installation block, which can slide into the water feeding pipe along the central line direction of the water feeding pipe, the installation block can be kept stationary in the water feeding pipe, a reaction channel corresponding to the induction hole is formed in the installation block, and one end of the reaction channel far away from the induction hole is opposite to the end of the spring;

[0014] A first airbag, one end of which is communicated with one end of the reaction channel and can be located in the corresponding induction hole; and

[0015] A second airbag, one end of which is communicated with the end of the reaction channel far away from the first airbag and is connected to the end of the spring far away from the plugging bead.

[0016] Preferably, the reaction channel includes:

[0017] A first reaction hole, which extends along the radial direction of the water feeding pipe and has one end opposite to the induction hole; and

[0018] A second reaction hole, which extends along the central line direction of the water feeding pipe, one end of the second reaction hole is opposite to the spring, and the end of the second reaction hole far away from the spring is communicated with the first reaction hole;

[0019] The adjusting mechanism further includes:

[0020] An annular sliding plate, which is coaxially arranged in the corresponding first reaction hole, and the annular sliding plate is in clearance fit with the first reaction hole;

[0021] A sealing ring, which is connected to the end of the annular sliding plate away from the second reaction hole, and the sealing ring can abut against the inner wall of the water feeding pipe; and

[0022] A positioning sleeve, one end outer wall of which is fixedly connected to the inner ring of the annular sliding plate, and the other end of the positioning sleeve can be inserted into the corresponding induction hole.

[0023] Preferably, the adjusting mechanism further comprises:

[0024] A third tubular bladder, one end of which is fixedly connected to the bottom of the first reaction hole, and the other end of which is fixedly connected to the outer ring of the annular sliding plate.

[0025] One end of the first airbag is open and fixedly connected to the inner wall of the positioning sleeve.

[0026] Preferably, the adjusting mechanism further comprises:

[0027] A guiding block, which is in clearance fit with the inner wall of the second reaction hole and fixedly connected to the second airbag;

[0028] A connecting rod, which is fixedly connected to the end of the guiding block away from the second airbag; and

[0029] A connecting ring, which is fixedly connected to the end of the spring away from the plugging bead, and the connecting ring is connected to the end of the connecting rod away from the guiding block.

[0030] Preferably, both the second airbag and the third tubular bladder are cylindrical foldable airbags.

[0031] Preferably, the water feeding pipe comprises:

[0032] A first pipe body, one end of which is the water outlet end, and the inner cavity cross-section of which is square; and

[0033] A second pipe body, which is connected to the first pipe body on the same center line, and the inner cavity cross-section of which is square;

[0034] The cross-section of the mounting block is square; the mounting block is in sliding fit with the inner wall of the second pipe body; the mounting block can abut against the first pipe body; and the induction hole is formed in the second pipe body.

[0035] Preferably, the mounting block is of a cuboid structure; a first water passing hole and a second mounting hole are formed in the square block along the center line direction of the water feeding pipe; the first water passing hole is communicated with the second mounting hole; one end of the spring abuts against the plugging bead, and the other end of the spring is located in the second mounting hole.

[0036] Preferably, a strip-shaped stop block is connected to one end of the positioning sleeve away from the third tubular bladder.

[0037] Compared with the prior art, the present invention has the following beneficial effects:

[0038] In the technology of the present invention, the regulating mechanism adjusts the thrust applied to the spring in real time according to the changes in the external air pressure, so that the thrust of the spring acting on the sealing bead changes, and then offsets the thrust applied to the sealing bead from the outside by the external air pressure, so that the sealing bead can remain at the water outlet of the limit plate in the absence of licking by the experimental animal, forming a seal on the water outlet, avoiding water leakage, and maintaining the environment inside the simulated cabin. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly describes the drawings required for the specific embodiments or the description of the prior art. Similar elements or parts are generally identified by similar reference numerals throughout the drawings. Elements or parts in the drawings are not necessarily drawn to scale.

[0040] Figure 1 This is a schematic diagram of the installation of a water outlet device that prevents water leakage in one embodiment of the present invention;

[0041] Figure 2 A perspective view of a water outlet device that prevents water leakage in one embodiment of the present invention;

[0042] Figure 3 for Figure 1 A cross-sectional view of the middle water outlet device;

[0043] Figure 4 for Figure 3 The enlarged schematic diagram of S in the middle;

[0044] Figure 5 for Figure 2 Exploded view of the mid-water outlet device;

[0045] Figure 6 for Figure 5 Partial cross-sectional view.

[0046] Reference numerals:

[0047] 10. Water feeding pipe; 11. Water inlet; 12. Water outlet; 13. Sensor hole; 14. First tube body; 15. Second tube body;

[0048] 20. Limit plate; 21. Water outlet;

[0049] 30. Sealing beads;

[0050] 40. Spring;

[0051] 50. Adjusting mechanism; 51. Mounting block; 511. Reaction channel; 512. First reaction hole; 513. Second reaction hole; 514. First water passing hole; 515. Second mounting hole; 52. First airbag; 53. Second airbag; 54. Annular sliding plate; 55. Sealing ring; 56. Positioning sleeve; 57. Third tubular bladder; 58. Guide block; 59. Connecting rod; 60. Connecting ring; 61. Strip-shaped stop block. Detailed implementation mode

[0052] Hereinafter, embodiments of the technical solution of the present invention will be described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and thus are only examples and cannot be used to limit the protection scope of the present invention.

[0053] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in this application should be the ordinary meanings understood by those skilled in the art to which the present invention belongs.

[0054] In the description of this application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention.

[0055] In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. In the description of the present invention, "a plurality" means two or more, unless otherwise specifically defined.

[0056] In this application, unless otherwise clearly specified and limited, the terms "mounting", "connecting", "connecting", "fixing", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0057] In this application, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply indicates that the first feature has a lower horizontal height than the second feature.

[0058] See Figures 1 to 6 , this embodiment provides a water outlet device for preventing water leakage, including a water feeding pipe 10, a limiting ring, a plugging bead 30, a spring 40 and an adjusting mechanism 50.

[0059] The water feeding pipe 10 has a water inlet end 11 and a water outlet end 12. The water inlet end 11 of the water feeding pipe 10 is communicated with the water delivery pipe of the automatic water feeding device. The limiting plate 20 is connected to the water outlet end 12 of the water feeding pipe 10. A water outlet hole 21 is formed on the limiting plate 20, and the water outlet hole 21 is coaxial with the water feeding pipe 10. The plugging bead 30 is arranged in the water feeding pipe 10, and the plugging bead 30 can move along the central line direction of the water feeding pipe 10 to block the water outlet hole 21. When the plugging bead 30 does not block the water outlet hole 21, the water in the water feeding pipe 10 can pass through the outer periphery of the plugging bead 30 and flow out from the water outlet hole 21. The spring 40 is arranged in the water feeding pipe 10 and abuts against the plugging bead 30 at one end. The adjusting mechanism 50 is connected to the other end of the spring 40, and the adjusting mechanism 50 applies different degrees of thrust to the spring 40 according to different external air pressures. When the external air pressure increases, the thrust applied by the adjusting mechanism 50 to the spring 40 increases, so that the spring 40 between the adjusting mechanism 50 and the plugging bead 30 is compressed, and the elastic force of the spring 40 acting on the plugging bead 30 increases.

[0060] In this embodiment, the adjusting mechanism 50 adjusts the thrust applied to the spring 40 in real time according to the change of the external air pressure, so that the thrust of the spring 40 acting on the plugging bead 30 changes, and further offsets the thrust applied to the plugging bead 30 from the outside by the external air pressure, so that the plugging bead 30 can be kept at the water outlet hole 21 of the limiting plate 20 and block the water outlet hole 21 without being licked by the experimental animal, avoiding water leakage and maintaining the environment in the simulation chamber.

[0061] In one embodiment, two or more induction holes 13 are formed on the water feeding pipe 10.

[0062] The adjusting mechanism 50 includes a mounting block 51, a first airbag 52 and a second airbag 53.

[0063] The mounting block 51 can slide into the water feeding pipe 10 along the central axis direction of the water feeding pipe 10 and can remain stationary within the water feeding pipe 10. Reaction channels 511 corresponding to the induction holes 13 are formed in the mounting block 51 (i.e., the number of reaction channels 511 on the mounting block 51 is the same as the number of induction holes 13). One end of the reaction channel 511 away from the induction hole 13 faces the end of the spring 40. One end of the first airbag 52 communicates with one end of the reaction channel 511 and can be located within the corresponding induction hole 13. One end of the second airbag 53 communicates with the end of the reaction channel 511 away from the first airbag 52 and is connected to the end of the spring 40 away from the plugging bead 30. The first airbag 52 communicates with the second airbag 53 through the reaction channel 511. The first airbag 52, the second airbag 53, and the reaction channels 511 correspond to each other one by one.

[0064] In this embodiment, the first airbag 52 connected to one end of the reaction channel 511 is placed at the position of the induction hole 13. When the external air pressure increases, the first airbag 52 is compressed, and through transmission in the reaction channel 511, the volume of the second airbag 53 is increased, thereby compressing the spring 40. The compressed spring 40 exerts a greater pressure on the plugging bead 30, which roughly offsets the air pressure received by the plugging bead 30, thus preventing water leakage caused by the retraction of the plugging bead 30.

[0065] In one embodiment, the reaction channel 511 includes a first reaction hole 512 and a second reaction hole 513.

[0066] The first reaction hole 512 extends along the radial direction of the water feeding pipe 10, and one end of the first reaction hole 512 faces the induction hole 13. The second reaction hole 513 extends along the central axis direction of the water feeding pipe 10, one end of the second reaction hole 513 faces the spring 40, and the end of the second reaction hole 513 away from the spring 40 communicates with the first reaction hole 512. The first reaction hole 512 and the second reaction hole 513 are connected through a transition hole.

[0067] The adjusting mechanism 50 further includes an annular sliding plate 54, a sealing ring 55, and a positioning sleeve 56.

[0068] The annular sliding plate 54 is coaxially arranged within the corresponding first reaction hole 512, and the annular sliding plate 54 has a clearance fit with the first reaction hole 512. The sealing ring 55 is connected to the end of the annular sliding plate 54 facing away from the second reaction hole 513, and the sealing ring 55 can abut against the inner wall of the water feeding pipe. One end outer wall of the positioning sleeve 56 is fixedly connected to the inner ring of the annular sliding plate, and the other end of the positioning sleeve 56 can be inserted into the corresponding induction hole 13.

[0069] In this embodiment, the mounting block 51 slides into the feeding tube, driving the annular sliding plate 54 to move out of the first reaction hole 512. At this time, the positioning sleeve 56 is inserted into the corresponding induction hole 13, so that the mounting block 51 remains stationary in the feeding tube to achieve fixation. And the sealing ring 55 abuts against the inner wall of the feeding tube at this time, and the induction hole 13 is located in the middle of the sealing ring 55, thus preventing water from leaking from the induction hole 13.

[0070] In one embodiment, the adjusting mechanism 50 further includes a third tubular bladder 57.

[0071] One end of the third tubular bladder 57 is fixedly connected to the bottom of the first reaction hole 512, and the other end of the third tubular bladder 57 is fixedly connected to the outer ring of the annular sliding plate 54. One end of the first airbag 52 is open and fixedly connected to the inner wall of the positioning sleeve 56.

[0072] In this embodiment, during installation, first press the positioning sleeve 56 to retract it into the first reaction hole 512. At this time, slide the mounting block 51 into the feeding tube. At this time, the gas in the first reaction hole 512 moves towards the second airbag 53, compressing the spring 40 through the second airbag 53. At this time, the annular sliding plate 54 is affected by the internal air pressure (the annular sliding plate 54 is relatively wide and will be affected by the air pressure in the reaction channel 511), and has a tendency to move out of the first reaction hole 512. Until the positioning sleeve 56 moves to the induction hole 13 along with the mounting block 51, the annular sliding plate 54 and the positioning sleeve 56 move towards the reaction hole, and the positioning sleeve 56 is inserted into the induction hole 13. When the air pressure outside the first airbag 52 increases and the first airbag 52 is pressed into the first reaction hole 512, the air pressure in the reaction channel 511 increases, which will press the annular sliding plate 54 closer to the inner wall of the water supply pipe 10, so that the sealing effect between the sealing ring 55 and the inner wall of the water supply pipe 10 is better.

[0073] In one embodiment, the adjusting mechanism 50 further includes a guide block 58, a connecting rod 59 and a connecting ring 60.

[0074] The guide block 58 is in clearance fit with the inner wall of the second reaction hole 513, and the guide block 58 is fixedly connected to the second airbag 53. The connecting rod 59 is fixedly connected to the end of the guide block 58 away from the second airbag 53. The connecting ring 60 is fixedly connected to the end of the spring 40 away from the plugging bead 30, and the connecting ring 60 is connected to the end of the connecting rod 59 away from the guide block 58.

[0075] In this embodiment, two or more connecting rods 59 apply force to the connecting ring 60 evenly, so that the spring 40 applies force to the plugging bead 30 evenly.

[0076] In one embodiment, both the second airbag 53 and the third tubular airbag 57 are cylindrical foldable airbags, and their structures are similar to bellows. When the second airbag 53 and the third tubular airbag 57 are folded, they have a certain guiding effect, that is, they are folded in a fixed direction. Therefore, the gaps between the annular sliding plate 54 and the inner wall of the first reaction hole 512 and between the guiding block 58 and the inner wall of the second reaction hole 513 can be set larger to avoid direct contact, thereby reducing the friction force, so that when the first airbag 52 is compressed, the pressure can be quickly transmitted to the spring 40 through the second airbag 53.

[0077] In one embodiment, the water supply pipe 10 includes a first pipe body 14 and a second pipe body 15.

[0078] One end of the first pipe body 14 is a water outlet end 12, and its inner cavity cross-section is square. The second pipe body 15 is connected to the first pipe body 14 on the same center line, and its inner cavity cross-section is square. The mounting block 51 has a square cross-section; the mounting block 51 is slidably matched with the inner wall of the second pipe body 15, the mounting block 51 can abut against the first pipe body 14, and the induction hole 13 is opened on the second pipe body 15.

[0079] In this embodiment, the plugging bead 30 is not inside the first pipe body 14. Since the inner cavity of the first pipe body 14 is square, the plugging bead 30 can be restricted, so that the plugging bead 30 can only move along the center line direction of the first pipe body 14. Once the plugging bead 30 moves towards the second pipe body 15, water can flow out from the four corners of the first pipe body 14 after passing through the plugging bead 30. When the mounting block 51 abuts against the first pipe body 14, the positioning sleeve 56 pops out from the corresponding induction hole 13.

[0080] In one embodiment, the mounting block 51 has a cuboid structure; a first water passing hole 514 and a second mounting hole 515 are opened on the square block along the center line direction of the water supply pipe 10; the first water passing hole 514 is communicated with the second mounting hole 515; one end of the spring 40 abuts against the plugging bead 30, and the other end of the spring 40 is located in the second mounting hole 515.

[0081] In this embodiment, the cuboid structure of the mounting block 51 is convenient for installation. When it is matched with the second pipe body 15, the mounting block 51 abuts against the first pipe body 14, and the positioning sleeve 56 can pop out from the corresponding induction hole 13 to form a fixation. The installation is convenient.

[0082] In one embodiment, a strip-shaped stop block 61 is connected to one end of the positioning sleeve 56 away from the third tubular airbag 57. The strip-shaped stop block 61 limits the first airbag 52 to prevent the first airbag 52 from expanding outwards. Thus, when the gas in the reaction channel 511 is pressurized, it can act on the annular sliding plate 54 to ensure the sealing performance between the sealing ring 55 and the inner wall of the water supply pipe 10.

[0083] In the description of the present invention, a large number of specific details are set forth. However, it is understood that embodiments of the present invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail so as not to obscure the understanding of this description.

[0084] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be covered within the scope of the claims and the description of the present invention.

Claims

1. A water outlet device for preventing water leakage, characterized in that, Comprising: A water supply pipe (10) having a water inlet end (11) and a water outlet end (12); A limit plate (20) connected to the water outlet end (12) of the water supply pipe (10), and having a water outlet hole (21) formed therein; A plugging bead (30) disposed within the water supply pipe (10) and movable along the central axis direction of the water supply pipe (10) to form a plug for the water outlet hole (21); A spring (40) disposed within the water supply pipe (10), with one end abutted against the plugging bead (30); and An adjusting mechanism (50) connected to the other end of the spring (40) and applying different degrees of thrust to the spring (40) according to different external air pressures.

2. A water-leakage-proof water outlet device according to claim 1, characterized in that: Two or more induction holes (13) are formed in the water supply pipe (10); The adjusting mechanism (50) includes: A mounting block (51) slidable along the central axis direction of the water supply pipe (10) and entering into the water supply pipe (10), the mounting block (51) being capable of remaining stationary within the water supply pipe (10), and having a reaction channel (511) corresponding to the induction hole (13) formed therein, and one end of the reaction channel (511) remote from the induction hole (13) being opposite to the end of the spring (40); A first airbag (52), with one end of the first airbag (52) communicating with one end of the reaction channel (511) and being capable of being located within the corresponding induction hole (13); and A second airbag (53), with one end of the second airbag (53) communicating with the end of the reaction channel (511) remote from the first airbag (52) and connected to the end of the spring (40) remote from the plugging bead (30).

3. A water-leakage-proof water outlet device according to claim 2, characterized in that: The reaction channel (511) includes: A first reaction hole (512) extending radially along the water supply pipe (10), with one end opposite to the induction hole (13); and A second reaction hole (513) extending along the central axis direction of the water supply pipe (10), with one end of the second reaction hole (513) opposite to the spring (40), and the end of the second reaction hole (513) remote from the spring (40) communicating with the first reaction hole (512); The adjusting mechanism (50) further includes: An annular sliding plate (54) coaxially disposed within the corresponding first reaction hole (512), and the annular sliding plate (54) being in clearance fit with the first reaction hole (512); A sealing ring (55) connected to the end of the annular sliding plate (54) facing away from the second reaction hole (513), and the sealing ring (55) being capable of abutting against the inner wall of the water supply pipe; and A positioning sleeve (56), with the outer wall of one end of the positioning sleeve (56) fixedly connected to the inner ring of the annular sliding plate (54), and the other end of the positioning sleeve (56) being insertable into the corresponding induction hole (13).

4. A water-leakage-proof water outlet device according to claim 3, characterized in that: The adjusting mechanism (50) further includes: A third tubular bladder (57), with one end fixedly connected to the bottom of the first reaction hole (512) and the other end fixedly connected to the outer ring of the annular sliding plate (54). One end of the first airbag (52) is open and fixedly connected to the inner wall of the positioning sleeve (56).

5. The water outlet device for preventing water leakage according to claim 4, wherein The adjusting mechanism (50) further includes: A guiding block (58), which is in clearance fit with the inner wall of the second reaction hole (513) and fixedly connected to the second airbag (53); A connecting rod (59), fixedly connected to the end of the guiding block (58) away from the second airbag (53); and A connecting ring (60), fixedly connected to the end of the spring (40) away from the plugging bead (30), and the connecting ring (60) is connected to the end of the connecting rod (59) away from the guiding block (58).

6. The water outlet device for preventing water leakage according to claim 5, characterized in that, Both the second airbag (53) and the third tubular airbag (57) are cylindrical foldable airbags.

7. The water outlet device for preventing water leakage according to claim 6, characterized in that, The water feeding pipe (10) includes: A first pipe body (14), one end of which is the water outlet end (12), and the cross-section of its inner cavity is square; and A second pipe body (15), connected to the first pipe body (14) on the same center line, and the cross-section of its inner cavity is square; The cross-section of the mounting block (51) is square; the mounting block (51) is in sliding fit with the inner wall of the second pipe body (15); the mounting block (51) can abut against the first pipe body (14); and the induction hole (13) is opened on the second pipe body (15).

8. The water outlet device for preventing water leakage according to claim 7, characterized in that, The mounting block (51) is of a cuboid structure; a first water passing hole (514) and a second mounting hole (515) are opened on the square block along the center line direction of the water feeding pipe (10); the first water passing hole (514) communicates with the second mounting hole (515); one end of the spring (40) abuts against the plugging bead (30), and the other end of the spring (40) is located in the second mounting hole (515).

9. The water outlet device for preventing water leakage according to claim 8, characterized in that, A strip-shaped stop block (61) is connected to the end of the positioning sleeve (56) away from the third tubular airbag (57).

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