Anti-drifting peritoneal dialysis pipeline convenient to fix

Abstract

The invention relates to the technical field of peritoneal dialysis, and provides an anti-drifting peritoneal dialysis pipeline convenient to fix, the anti-drifting peritoneal dialysis pipeline convenient to fix comprises a second dialysis tube arranged in an abdominal cavity, one end of the second dialysis tube is connected with one end of a detachable first dialysis tube in an inserted mode, and the other end of the first dialysis tube is connected with an abdominal fluid bag and a waste fluid bag; a connecting piece extending out of the abdominal cavity is arranged at one end of the second dialysis tube, and the other end of the first dialysis tube is fixedly connected to the extending end of the connecting piece; when the device is used and the second dialysis tube floats, the winding structure is used for controlling the balance weight structure, so that the weight of abdominal fluid entering the abdominal cavity of a patient and the weight of the balance weight structure are increased, the balance weight structure is reset due to gravity, and after the second dialysis tube is reset, the winding structure is pulled again, so that the abdominal fluid of the balance weight structure is transferred into the abdominal cavity. The weight of the counterweight structure is recovered to be the same as the original state, and the recovery effect of the patient is improved.

Description

Technical Field

[0001] The invention relates to the technical field of peritoneal dialysis, and in particular to an anti-drift peritoneal dialysis pipeline which is easy to fix. Background Art

[0002] Uremia is a very serious kidney disease. In the process of treating uremia, peritoneal dialysis is a common and effective method. It uses the body's own peritoneum as a semipermeable membrane to remove water and toxins. It has high removal efficiency and long effect time, and has little impact on the patient's other organs and systems, and does not damage the function of the remaining kidneys. In addition to having ideal therapeutic effects, peritoneal dialysis is also very economical and easy to operate. It can be performed at home. The combination of various advantages has led to the rapid development and promotion of peritoneal dialysis. It is used by many uremia patients as a renal replacement therapy. The principle of peritoneal dialysis surgery is simply to place the peritoneal dialysis tube at the bottom of the patient's abdominal cavity, which affects the patient's recovery. For peritoneal dialysis surgery, building a continuous and safe dialysis pathway is its core. However, under the influence of various unstable factors, the peritoneal dialysis tube can easily drift out of the true pelvic cavity, which is what we call tube drift. Once the peritoneal dialysis tube drifts, the patient's dialysate drainage will be obstructed, greatly reducing the quality and effect of dialysis, and also causing pain to the patient. Therefore, it is very important to prevent tube drift. Summary of the invention

[0003] In view of the deficiencies of the prior art, the present invention provides an anti-drift peritoneal dialysis pipeline that is easy to fix, solving the problems raised in the above-mentioned background technology.

[0004] The technical solution of the present invention is as follows:

[0005] A peritoneal dialysis circuit that is easy to fix and prevents drifting comprises a second dialysis tube arranged in the abdominal cavity, one end of the second dialysis tube is plugged with one end of a detachable first dialysis tube, one end of the first dialysis tube is respectively connected to a peritoneal fluid bag and a waste fluid bag,

[0006] One end of the second dialysis tube is provided with a connector extending to the outside of the abdominal cavity, and the other end of the first dialysis tube is fixedly connected to the protruding end of the connector;

[0007] The connector is provided with a matching silicone sleeve inside the body and a silicone plate outside the body for fixing the pipeline;

[0008] A dialysis hole is provided on the other end surface of the second dialysis tube, and a counterweight structure is provided at the bottom of the second dialysis tube;

[0009] The connecting piece is provided with a winding structure connected with the control counterweight structure.

[0010] Furthermore, the winding structure includes an inclined tube connected to the connecting piece, a wire drum rotatably connected to the inclined tube, and a pull rope wound around the wire drum, one end of the pull rope is fixedly connected to the counterweight structure.

[0011] Furthermore, the counterweight structure includes a second connecting shell with openings at the top and bottom, a lower clamping block and a movable plate, the second connecting shell is fixedly connected to the bottom end of the second dialysis tube, the lower clamping block is slidably connected in the second connecting shell, the movable plate is snap-connected to the bottom end of the inner wall of the second connecting shell, and the movable plate can be adsorbed on the bottom end of the lower clamping block and move up and down.

[0012] Furthermore, a sinking groove cooperating with the lower clamping block is provided at the upper end of the inner wall of the second connecting shell, a first groove is provided on one side of the sinking groove, and a limiting structure for fixing the lower clamping block is provided in the first groove.

[0013] Furthermore, the limiting structure includes a moving block, a connecting rod, a spring, a first protrusion and a baffle. The moving block is slidably connected in the first groove. The connecting rod fixedly connected to one side of the moving block passes through the second groove set in the side wall of the second connecting shell. The spring is sleeved on the connecting rod. The protruding end of the connecting rod is fixedly connected with the baffle. The first protrusion is set on the other side of the moving block.

[0014] Furthermore, the opposite surfaces of the lower clamping block and the moving block are provided with second protrusions that match with the first protrusions.

[0015] Furthermore, a slide rail is provided on the lower side of the lower clamping block relative to the second protrusion, the slide rail is slidably connected to the sliding block, the inner side of the sliding block is fixedly connected to a clamping block that matches the slide rail, and an upward third protrusion is provided on one side of the end of the sliding block.

[0016] Furthermore, the length of the sink is greater than the length of the lower clamping block.

[0017] Furthermore, a through drainage hole is provided on the movable plate, and a blocking block is provided at the bottom end of the movable plate, and the blocking block is engaged with the water outlet provided at the bottom end of the second connecting shell.

[0018] Compared with the prior art, the technical solution provided by the present invention has the following beneficial effects: when the present invention is in use, medical staff can adjust the distance between the silicone sleeve and the silicone plate on the connecting piece according to the different physiques of each person, so that the second dialysis tube can be better fixed under the patient's skin, making it more convenient to install and disassemble the first dialysis tube; after the catheter is placed, a counterweight is set to increase the weight of the tail end of the second dialysis tube to prevent the peritoneal dialysis catheter from drifting and affecting the patient's recovery; when the second dialysis tube drifts, the winding structure is used to control the counterweight structure so that the patient's abdominal fluid enters the counterweight structure, the weight of the counterweight structure increases, and the counterweight structure is reset due to gravity. After the second dialysis tube is reset, the winding structure is pulled again to transfer the abdominal fluid of the counterweight structure into the abdomen, so that the weight of the counterweight structure is restored to the same as the original state, thereby improving the patient's recovery effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the anti-drift peritoneal dialysis pipeline which is easy to fix in the present invention;

[0020] Figure 2 is a cross-sectional schematic diagram of a connecting member;

[0021] Figure 3 is a cross-sectional schematic diagram of a counterweight structure;

[0022] Figure 4 It is a structural schematic diagram of the lower card;

[0023] Figure 5 is a schematic diagram of the structure of the sliding member;

[0024] Figure 6 is a schematic diagram of the structure of the disc;

[0025] Figure 7 It is a partial enlarged view of A;

[0026] In the figure: 1, first dialysis tube, 2, peritoneal fluid bag, 3, waste fluid bag, 4, connector, 41, first connecting shell, 42, plug, 43, inclined tube, 44, threaded tube, 45, silicone sleeve, 46, silicone plate, 47, roller, 48, connecting shaft, 49, turntable, 5, second dialysis tube, 6, dialysis hole, 7, counterweight structure, 71, second connecting shell, 72, sink, 721, first slide slot, 73, slot, 74, limit structure, 741, moving block, 742, connection Rod, 743, spring, 744, first protrusion, 745, baffle, 75, lower block, 76, second protrusion, 77, sliding block, 771, block, 772, third protrusion, 78, slider, 79, second slide groove, 710, drainage hole, 711, first magnet, 712, second magnet, 713, lifting ring, 714, connecting plate, 715, slide rail, 716, fourth protrusion, 717, first groove, 718, second groove, 719, movable disk, 720, blocking block. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] As shown in Figure 1-7, an anti-drift peritoneal dialysis pipeline that is easy to fix includes a second dialysis tube 5 arranged in the abdominal cavity, one end of the second dialysis tube 5 is plugged with one end of a detachable first dialysis tube 1, one end of the first dialysis tube 1 is respectively connected to a peritoneal fluid bag 2 and a waste fluid bag 3, the first dialysis tube 1 is a Y-shaped structure, the main tube section of the first dialysis tube 1 is connected to the second dialysis tube 5, the upper end and the lower end of the branch section are respectively provided with the peritoneal fluid bag 2 and the waste fluid bag 3, and the two branch sections are provided with water stop clamps, which are convenient for blocking and use according to actual operations;

[0029] One end of the second dialysis tube 5 is provided with a connector 4 extending to the outside of the abdominal cavity, and the other end of the first dialysis tube 1 is fixedly connected to the protruding end of the connector 4; the connector 4 is provided with a matching silicone sleeve 45 in the body and a silicone plate 46 outside the body for fixing the pipeline; the connector 4 includes a cylindrical first connecting shell 41 and a plug 42, and the plug 42 is fixedly connected to the two ends of the hollow first connecting shell 41, and the end of the first dialysis tube 1 is fixedly connected with a threaded barrel, and the threaded barrel cooperates with the thread provided on the outer surface of the outer plug 42; the silicone sleeve 45 is fixedly connected to the end of the first connecting shell 41 (that is, the side in the body), and the diameter of the silicone sleeve 45 is larger than the width of the cut wound to prevent the second dialysis tube 5 from facing outward side movement; the silicone plate 46 is an elliptical structure, and an adhesive silver ion dressing is provided at the bottom, which is convenient for directly killing bacteria, controlling wound infection, accelerating wound healing, and removing odors caused by bacteria. The silicone plate 46 is arranged in the middle position of the first connecting shell 41 (that is, outside the body); the first connecting shell 41 located on the outside of the body is provided with an external thread, and a threaded tube 44 is threadedly connected to the external thread. The bottom end of the threaded tube 44 is fixedly connected to the silicone plate 46, and the silicone plate 46 is driven to move up and down by twisting the threaded tube 44, and the distance between the silicone plate 46 and the silicone sleeve 45 is adjusted to make the connecting piece 4 more stable. By arranging one end of the first dialysis tube 1 and the second dialysis tube 5 to be connected to the connecting piece 4, the effect of positioning the internal position of the entire dialysis tube in the abdominal cavity is achieved.

[0030] A dialysis hole 6 is provided on the surface of the other end of the second dialysis tube 5, and a counterweight structure 7 is provided at the bottom of the second dialysis tube 5. The second dialysis tube 5 is connected to the counterweight structure 7. By providing the counterweight structure 7, the weight of the end of the second dialysis tube 5 is increased to reset it; a winding structure connected to the control counterweight structure 7 is provided on the connecting member 4. By providing the winding structure, the water inlet and water outlet of the counterweight structure 7 are controlled, and the weight of the counterweight structure 7 is adjusted.

[0031] like Figure 2 As shown, the winding structure includes an inclined tube 43 connected to the connecting member 4, a wire drum 47 rotatably connected to the inclined tube 43, and a pull rope wound on the wire drum 47, one end of which is fixedly connected to the counterweight structure 7.

[0032] Specifically, the inclined tube 43 is arranged on the upper side of the external thread, and a circular hole is opened at the end of the inclined tube 43, and a bearing is fixedly connected in the circular hole, and a connecting shaft 48 that penetrates into the inclined tube 43 is fixedly connected in the bearing, and the inner end of the connecting shaft 48 is fixedly connected to the roller 47, and the outer end of the connecting shaft 48 is fixedly connected to the turntable 49; the first connecting shell 41 is provided with a connecting through hole relative to the position of the inclined tube, and the pull rope is made of biometal material, one end of the rope is wrapped around the roller 47 for fixation, and the other end passes through the through hole and is fixedly connected to the upper end of the counterweight structure 7, and the length of the pull rope is greater than the length of the second dialysis tube 5.

[0033] like Figure 3 and Figure 6 As shown, the counterweight structure includes a second connecting shell 71 with openings at the top and bottom, a lower clamping block 75 and a movable plate 719, the second connecting shell 71 is fixedly connected to the bottom end of the second dialysis tube 5, the lower clamping block 75 is slidably connected in the second connecting shell 71, the movable plate 719 is snap-connected to the bottom end of the inner wall of the second connecting shell 71, and the movable plate 719 can be adsorbed on the bottom end of the lower clamping block 75 and move up and down; a sink groove 72 cooperating with the lower clamping block 75 is provided at the upper end of the inner wall of the second connecting shell 71, a first groove 717 is provided on one side of the sink groove 72, and a limiting structure 74 for fixing the lower clamping block 75 is provided in the first groove 717.

[0034] Specifically, the diameter of the second dialysis tube 5 is the same as the diameter of the second connection shell 71; the bottom end of the lower clamping block 75 is fixedly connected with a long strip-shaped connecting plate 714, the length of the connecting plate 714 is consistent with the inner diameter of the second connection shell 71, and the connecting plate 714 is consistent with the shape of the clamping groove 73 at the lower end of the sink 72; the longitudinal section of the sink 72 is the same as the shape of the lower clamping block 75, and when the lower clamping block 75 is clamped in the sink 72, the second dialysis tube 5 is not connected to the second connection shell; in order to ensure that the lower clamping block 75 is clamped into the sink 7 2, a fourth semi-cylindrical protrusion 716 is fixedly connected to one side of the lower clamping block 75, and a first slide groove 721 matching with the fourth protrusion 716 is provided on the side wall of the sink 72; a lifting ring 713 is fixedly connected to the upper end of the lower clamping block 75, and the lifting ring 713 is connected to one end of the pull rope; the movable plate 719 is a disc-shaped structure, and the diameter of the movable plate 719 is the same as the inner diameter of the second connecting shell 71, and a through drainage hole 710 is provided on the movable plate 719, and the bottom of the movable plate 719 is provided with a drain hole 710. The end is provided with a blocking block 720, and the blocking block 720 is engaged with the water outlet provided at the bottom end of the second connecting shell 71; the connecting plate 714 is provided with a placement groove on the opposite surface to the movable disk 719, and the first magnet 711 and the second magnet 712 are fixedly connected in the placement groove respectively, and the corresponding surfaces of the two magnets are special-shaped magnetic fields. When the connecting plate 714 contacts the movable disk 719, the movable disk 719 can move up and down simultaneously with the connecting plate 714; in order to make the lower block 75 detach from the movable disk 719 and get stuck into the sink 72 A second slide groove 79 is provided at the bottom end of the inner wall of the second connecting shell 71, and a movable plate 719 is fixedly connected to a slider 78 corresponding to the position of the second slide groove 79. When the lower clamping block 75 rises to a certain position, the slider 78 contacts the top wall of the second slide groove 79, and the lower clamping block 75 is pulled forcefully, so that the movable plate 719 falls off and returns to its initial position, and the water outlet is in a closed state. In order to ensure that the lower clamping block 75 is limited when it is pulled to the end point, a limiting structure 74 is provided where the lower clamping block 75 is at the end position.

[0035] like Figure 7 As shown, the limiting structure 74 includes a moving block 741, a connecting rod 742, a spring 743, a first protrusion 744 and a blocking piece 745. The moving block 741 is slidably connected in the first groove 717. The connecting rod 742 fixedly connected to one side of the moving block 741 passes through the second groove 718 set on the side wall of the second connecting shell 71. The spring 743 is sleeved on the connecting rod 742. The protruding end of the connecting rod 742 is fixedly connected with the blocking piece 745. The other side of the moving block 741 is provided with a first protrusion 744; the opposite surface of the lower clamping block 75 and the moving block 741 is provided with a second protrusion 76 that cooperates with the first protrusion 744.

[0036] Specifically, the opening of the first groove 717 faces the lower block 75, the second groove 718 is located close to the outer side of the second connecting shell 71, and a connecting jack is provided between the first groove 717 and the second groove 718; the thickness of the moving block 741 is less than the depth of the first groove 717, and the length of the first protrusion 744 is less than the distance from the blocking piece 745 to the side wall of the second groove 718; when in the initial position, the spring 743 is not compressed, and the outer surface of the moving block 741 and the side surface of the sink 72 are in the same vertical and horizontal state;

[0037] The first protrusion 744 is in the shape of a right triangle with the right angle side facing upwards and is fixed to the outer side of the moving block 741. The length of the first protrusion 744 is consistent with the length of the moving block 741. The second protrusion 76 is in the shape of a right triangle with the right angle side facing leftwards and is fixed to the lower clamping block 75. The second protrusion 76 is located at the upper left corner of the lower clamping block 75. The length of the second protrusion 76 is half the thickness of the lower clamping block 75. The first protrusion 744 and the second protrusion 76 are in the same vertical horizontal plane.

[0038] When the pull rope pulls the lower block 75 upward, the inclined surface of the first protrusion 744 conflicts with the inclined surface of the second protrusion 76, and the first protrusion 744 is pulled upward to squeeze the second protrusion 76 to move inward. The spring 743 is compressed and the blocking piece 745 moves inward. As the pull is pulled upward, the first protrusion 744 does not produce an extrusion force on the second protrusion 76, and the second protrusion 76 moves outward. The spring 743 and the blocking piece 745 return to their initial state, and the end face of the first protrusion 744 conflicts with the end face of the second protrusion 76.

[0039] like Figure 4 and Figure 5 A slide rail 715 is provided on the lower side of the lower clamping block 75 relative to the second protrusion 76, and a sliding block 77 is slidably connected to the slide rail 715. The inner side surface of the sliding block 77 is fixedly connected with a clamping block 771 that matches the slide rail 715, and an upward third protrusion 772 is provided on one side of the end of the sliding block 77.

[0040] Specifically, the transverse cross section of the sliding block 77 is C-shaped, and a corresponding clamping block 771 is provided on the inner side of the sliding block 77. The transverse cross section of the clamping block 771 is triangular, and a long groove matching the clamping block 771 is provided in the slide rail 715; the inclined surface on the third protrusion 772 is inclined downward, and the third protrusion 772 is fixedly connected to the upper right end of the sliding block 77 (that is, the third protrusion 772 does not contact the second protrusion 76 when moving, and the two are located on the left and right sides of the side of the lower clamping block 75), and the width of the third protrusion 772 is half the width of the sliding block 77; the length of the sink 72 is greater than the length of the lower clamping block 75;

[0041] When it is necessary to move the lower clamping block 75 downward, pull the pull rope upward so that the upper end of the connecting plate 714 contacts the side wall of the sink groove 72, the first protrusion 744 does not contact the end face of the second protrusion 76, the inclined surface of the third protrusion 772 contacts the inclined surface of the first protrusion 744, and pull the third protrusion 772 upward to squeeze the first protrusion 744 to move inward. When the first protrusion 744 retracts into the first groove 717, the lower clamping block 75 drops to the bottom end in the second connecting shell 71.

[0042] The working process of the peritoneal dialysis pipeline provided by the present invention that is easy to fix and prevent drift is as follows:

[0043] Adjust the silicone plate 46 to make it in close contact with the skin, thread the first dialysis tube 1 to the end of the connector 4, plug the branch section into the abdominal fluid bag 2 and the waste fluid bag 3, and install a water stop clamp on the branch section;

[0044] When the peritoneal fluid flows into the peritoneal cavity, the water-stop clamp at the end of the waste fluid bag 3 is in a closed state; when the waste fluid flows out, the water-stop clamp at the end of the peritoneal fluid bag 2 is opened. At this time, if it is found that the waste fluid does not flow out smoothly, the second dialysis tube in the peritoneal cavity may drift; at this time, the turntable 49 is rotated, the drawstring gradually becomes shorter, the third protrusion 772 squeezes the first protrusion 744 to move inward, and the lower clamping block 75 moves downward. The lower clamping block 75 moves downward and the second connecting shell 71 is connected with the second dialysis tube 5. The peritoneal fluid flows into the second connecting shell 71, and the weight of the second connecting shell 71 increases to restore the initial position. The turntable 49 is rotated again, and the lower clamping block 75 moves upward to limit and fix, and the second connecting shell 71 is not connected with the second dialysis tube 5.

[0045] When drainage is required, the turntable 49 is rotated again, and the lower block 75 gradually moves downward by its own gravity. The lower block 75 and the movable disk 719 are attracted to each other and pulled upward, so that the drainage hole 710 is connected with the abdominal cavity; after drainage is completed, the lower block 75 moves upward, the lower block 75 is separated from the movable disk 719, and the movable disk 719 blocks the drainage hole 710.

[0046] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A peritoneal dialysis circuit that is easy to fix and prevents drift, comprising a second dialysis tube (5) arranged in the abdominal cavity, one end of the second dialysis tube (5) being plugged with one end of a detachable first dialysis tube (1), and one end of the first dialysis tube (1) being respectively connected to a peritoneal fluid bag (2) and a waste fluid bag (3), characterized in that: One end of the second dialysis tube (5) is provided with a connector extending to the outside of the abdominal cavity, and the other end of the first dialysis tube (1) is fixedly connected to the protruding end of the connector (4); The connecting piece (4) is provided with a matching silicone sleeve (45) inside the body and a silicone plate (46) outside the body for fixing the pipeline; A dialysis hole (6) is provided at one end of the second dialysis tube (5) located in the abdominal cavity, and a counterweight structure (7) is provided at the bottom of the second dialysis tube (5); The connecting member (4) is provided with a winding structure connected to the control counterweight structure (7).

2. The easy-to-fix drift-resistant peritoneal dialysis circuit according to claim 1, characterized in that: The winding structure comprises an inclined tube (43) connected to the connecting member (4), a wire drum (47) rotatably connected to the inclined tube (43), and a pull rope wound around the wire drum (47), one end of the pull rope being fixedly connected to the counterweight structure (7).

3. The easy-to-fix drift-resistant peritoneal dialysis circuit according to claim 1, characterized in that: The counterweight structure comprises a second connecting shell (71) having openings at the top and bottom, a lower clamping block (75) and a movable plate (719), wherein the second connecting shell (71) is fixedly connected to the bottom end of the second dialysis tube (5), the lower clamping block (75) is slidably connected in the second connecting shell (71), and the movable plate (719) is snap-connected to the bottom end of the inner wall of the second connecting shell (71), and the movable plate (719) can be adsorbed on the bottom end of the lower clamping block (75) and move up and down.

4. The easy-to-fix drift-resistant peritoneal dialysis circuit according to claim 3, characterized in that: A recessed groove (72) matching with the lower clamping block (75) is provided at the upper end of the inner wall of the second connecting shell (71), a first groove (717) is provided on one side of the recessed groove (72), and a limiting structure (74) for fixing the lower clamping block (75) is provided in the first groove (717).

5. The peritoneal dialysis circuit for preventing drift and fixing according to claim 4, characterized in that: The limiting structure (74) comprises a moving block (741), a connecting rod (742), a spring (743), a first protrusion (744) and a blocking piece (745); the moving block (741) is slidably connected in the first groove (717); a connecting rod (742) fixedly connected to one side of the moving block (741) passes through a second groove (718) provided on the side wall of the second connecting shell (71); the spring (743) is sleeved on the connecting rod (742); a blocking piece (745) is fixedly connected to the protruding end of the connecting rod (742); and a first protrusion (744) is provided on the other side of the moving block (741).

6. The peritoneal dialysis circuit for preventing drift and fixing according to claim 5, characterized in that: The surfaces opposite to the lower clamping block (75) and the moving block (741) are provided with second protrusions (76) matching with the first protrusions (744).

7. The peritoneal dialysis circuit for preventing drift and fixing according to claim 6, characterized in that: A slide rail (715) is arranged on the lower side of the lower clamping block (75) relative to the second protrusion (76); a sliding block (77) is slidably connected to the slide rail (715); a clamping block (771) matching the slide rail (715) is fixedly connected to the inner side surface of the sliding block (77); and a third protrusion (772) facing upward is arranged on one side of the end of the sliding block (77).

8. The peritoneal dialysis circuit for preventing drift and fixing according to claim 4, characterized in that: The length of the sink (72) is greater than the length of the lower clamping block (75).

9. The peritoneal dialysis circuit for preventing drift and fixing according to claim 3, characterized in that: The movable plate (719) is provided with a through drainage hole (710), and a blocking block (720) is provided at the bottom end of the movable plate (719), and the blocking block (720) is engaged with a water outlet provided at the bottom end of the second connecting shell (71).

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