Drainage connector of hemodialysis machine

Abstract

The utility model relates to the technical field of drainage connectors, and discloses a drainage connector of a hemodialysis machine, which comprises an upper drainage connecting pipe and a lower drainage connecting pipe, a middle pipe is detachably connected between the upper drainage connecting pipe and the lower drainage connecting pipe, and an overflow pipe is communicated with the outer wall of the middle pipe. According to the utility model, the U-shaped pipe is arranged at the top of the overflow pipe, so that waste liquid can be directly discharged into the overflow collecting container through the U-shaped pipe of the overflow pipe, the waste liquid cannot continuously flow back into the drainage connecting upper pipe, and the waste liquid can be directly collected after flowing back, cannot be spilled out and cannot cause pollution in cooperation with the collection of the overflow collecting container; the three elastic valves are arranged on the inner wall in the middle pipe, so that the elastic valves can keep smooth when waste liquid flows down and close a channel when the waste liquid flows back, the effect of one-way flowing of the waste liquid is achieved, the waste liquid cannot flow back into the drainage connecting upper pipe, and the possibility that the waste liquid flows back to pollute a hemodialysis machine is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of drainage joints, in particular to a drainage joint for a hemodialysis machine. Background Art

[0002] Hemodialysis involves removing waste products from the blood through a semi-permeable membrane. Hemodialysis is a relatively safe, easy, and widely used blood purification method. The working principle of a hemodialysis machine is as follows: Dialysis concentrate and dialysis water are mixed into a qualified dialysate through a dialysate supply system. This dialysate then passes through the hemodialyzer and undergoes solute diffusion, osmosis, and filtration with the patient's blood drawn from the blood monitoring alarm system. The patient's blood, after the treatment, is returned to the patient's body through the blood monitoring alarm system, while the dialysate liquid used for dialysis is discharged from the dialysate supply system as waste liquid. This cycle repeats continuously, completing the entire dialysis process. Existing hemodialysis machines discharge waste liquid into the sewer through their own drain pipes, lacking corresponding drainage connectors. Over time, protein esters in the waste liquid adhere to the pipe walls. Long-term accumulation can cause pipe blockage, leading to poor drainage of the hemodialysis machine. This can also cause a decline in dialysis treatment or interruption of the hemodialysis machine alarm, causing waste liquid to flow back into the hemodialysis machine, causing contamination.

[0003] Patent publication number CN217510910U discloses a hemodialysis machine drainage connector, comprising an L-shaped positioning tube, the upper end of which is fixedly connected to the hemodialysis machine drainage tube, the lower end of which is vertically fixedly connected to a connecting tube, the side of which is fixedly provided with an overflow tube, the lower end of which is fixedly connected to an inclined tube, the side of which is matched with a liquid outlet tube, one end of which is fixedly connected to a drain pipe, a disc block sliding inside the inclined tube, a polished rod coaxially fixed to one side of the disc block, one end of which is matched with a control block, a sealing ring inside the inclined tube that matches the polished rod, and a fastener on the outside of the inclined tube that matches the polished rod. This device can be used to drain hemodialysis machines, block odor backflow, effectively prevent pipe blockage, and prevent waste liquid backflow.

[0004] Although the above device solves the problem of preventing waste liquid backflow, it still has the following shortcomings:

[0005] When the waste liquid is discharged from the overflow pipe, it cannot be guaranteed that the liquid can just flush the cap, and it is difficult to ensure that it will not flow back into the connecting pipe. If the cap is flushed, the waste liquid will spill out, causing pollution and inconvenience. Utility Model Content

[0006] In view of the deficiencies in the prior art, the utility model provides a drainage connector for a hemodialysis machine, which solves the problem of waste liquid backflow and overflow in the drainage connector.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a hemodialysis machine drainage joint, comprising an upper drainage connection tube and a lower drainage connection tube, an intermediate tube being detachably connected between the upper drainage connection tube and the lower drainage connection tube, an overflow pipe being connected to the outer wall of the intermediate tube, the end of the overflow pipe being fixedly connected to a U-shaped tube, the lower end of the U-shaped tube being fixedly connected to a pipe mouth, and the lower end of the pipe mouth being connected to an overflow collection container.

[0008] Furthermore, three elastic valves are fixedly connected to the inner wall of the middle tube, and gaps are provided between the three elastic valves.

[0009] Furthermore, the outer walls of both ends of the intermediate tube are threadedly connected with threaded rings, the outer walls of the drainage connection upper tube and the drainage connection lower tube are fixedly connected with outer rings, and the threaded rings are threadedly connected to the outer rings.

[0010] Furthermore, both ends of the middle pipe are provided with step grooves, and the ends of the drainage connection upper pipe and the drainage connection lower pipe are fixedly connected with extension rings, which are plugged into the step grooves.

[0011] Furthermore, a sealing ring is sleeved on the step groove, one side of the sealing ring abuts against the bottom surface of the step groove, and the other side abuts against the bottom surface of the extension ring.

[0012] Furthermore, the outer wall of the threaded ring is provided with anti-slip grooves.

[0013] Furthermore, a connecting port is fixedly connected to the top of the overflow collection container, and the pipe mouth and the connecting port are detachably connected.

[0014] Furthermore, the height of the elastic valve is higher than the communication position of the overflow tube.

[0015] Furthermore, a liquid level alarm is connected to the upper outer wall of the overflow pipe.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The utility model sets a U-shaped tube on the top of the overflow pipe, so that the waste liquid can be directly discharged into the overflow collection container through the overflow pipe U-shaped tube, so that the waste liquid will not continue to flow back into the drainage connection pipe. Combined with the collection of the overflow collection container, the waste liquid can be directly collected after flowing back without spilling or causing pollution. The structure is simple, easy to operate and highly practical.

[0018] 2. The utility model provides three elastic valves on the inner wall of the middle tube, which can keep the elastic valves open when the waste liquid flows forward and close the channel when it flows back, thereby achieving the effect of one-way flow of waste liquid, thereby preventing the waste liquid from flowing back into the drainage connection tube, reducing the possibility of waste liquid backflow contaminating the hemodialysis machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the three-dimensional cross-sectional structure of the intermediate tube of the utility model;

[0021] Figure 3 This is a schematic diagram of the three-dimensional cross-sectional structure of the overflow pipe of the utility model;

[0022] Figure 4 This is a schematic diagram of the three-dimensional cross-sectional structure of the intermediate tube and valve of the utility model;

[0023] Figure 5 It is a schematic diagram of the three-dimensional structure of the valve of the utility model.

[0024] In the figure: 1. Drainage connection upper pipe; 2. Drainage connection lower pipe; 3. Intermediate pipe; 31. Step groove; 32. Sealing ring; 4. Overflow pipe; 5. Overflow collection container; 51. Connection port; 6. U-shaped pipe; 61. Pipe mouth; 7. Outer ring; 8. Threaded ring; 9. Elastic valve; 10. Liquid level alarm; 11. Extension ring. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0026] like Figures 1 to 5 As shown, a drainage connector for a hemodialysis machine includes an upper drainage connection tube 1 and a lower drainage connection tube 2, wherein an intermediate tube 3 is detachably connected between the upper drainage connection tube 1 and the lower drainage connection tube 2, an overflow tube 4 is connected to the outer wall of the intermediate tube 3, an end of the overflow tube 4 is fixedly connected to a U-shaped tube 6, the lower end of the U-shaped tube 6 is fixedly connected to a pipe mouth 61, and the lower end of the pipe mouth 61 is connected to an overflow collection container 5.

[0027] like Figure 1 As shown, the drainage connector of the hemodialysis machine in the present invention is similar to the existing drainage connector of the hemodialysis machine. For example, the patent with announcement number CN217510910U discloses a drainage connector of the hemodialysis machine. The main improvement of the present invention is to solve the problem of waste liquid backflow overflow of the drainage connector. Figures 1 to 5 As shown, when the drainage connector of the hemodialysis machine in the present invention is in use, when waste liquid refluxes, the waste liquid will directly pass through the overflow pipe 4 to the U-shaped pipe 6 and be discharged into the overflow collection container 5.

[0028] By arranging a U-shaped tube 6 at the top of the overflow pipe 4, the waste liquid can be directly discharged into the overflow collection container 5 through the overflow pipe 4 U-shaped tube 6, so that the waste liquid will not continue to flow back into the drainage connection pipe 1. Combined with the collection of the overflow collection container 5, the waste liquid can be directly collected after flowing back without spilling or causing pollution.

[0029] like Figure 2 、 Figure 3 and Figure 5 As shown, three elastic valves 9 are fixedly connected to the inner wall of the middle tube 3 , and gaps are provided between the three elastic valves 9 .

[0030] Specifically, when the waste liquid flows downstream, due to the elasticity of the elastic valve 9, the gaps between the three elastic valves 9 will be expanded by the water pressure, and the waste liquid will flow downstream to the drainage connection lower pipe 2; when the liquid flows back, the gaps between the three elastic valves 9 will become smaller, causing a large part of the liquid to be blocked by the elastic valve 9 and then discharged through the overflow pipe 4. With this arrangement, the backflowing liquid will not pass through the intermediate pipe 3.

[0031] By arranging three elastic valves 9 on the inner wall of the intermediate tube 3, the elastic valves 9 can remain unobstructed when the waste liquid flows forward, and close the channel when it flows back, thereby achieving the effect of one-way flow of waste liquid, and thus preventing the waste liquid from flowing back into the drainage connection tube 1, reducing the possibility of waste liquid backflow contaminating the hemodialysis machine.

[0032] like Figure 2 and Figure 4 As shown, the outer walls of both ends of the intermediate tube 3 are threadedly connected with threaded rings 8, and the outer walls of the drainage connection upper tube 1 and the drainage connection lower tube 2 are fixedly connected with outer rings 7, and the threaded rings 8 are threadedly connected to the outer rings 7.

[0033] Specifically, when the elastic valve 9 or the overflow pipe 4 needs to be cleaned or replaced, the threaded ring 8 can be directly rotated to separate the threaded ring 8 from the outer ring 7, and then the intermediate tube 3 can be removed between the drainage connection upper tube 1 and the drainage connection lower tube 2, making it convenient to clean the elastic valve 9 and the overflow pipe 4.

[0034] like Figure 2 and Figure 4 As shown, both ends of the middle tube 3 are provided with step grooves 31 , and the ends of the drainage connection upper tube 1 and the drainage connection lower tube 2 are fixedly connected with extension rings 11 , which are plugged into the step grooves 31 .

[0035] Specifically, when the middle tube 3 needs to be connected with the drainage connection lower tube 2 and the drainage connection lower tube 2, it is only necessary to plug the extension rings 11 at the ends of the drainage connection upper tube 1 and the drainage connection lower tube 2 into the step grooves 31 at both ends of the middle tube 3, so as to realize the pre-fixation of the middle tube 3. At the same time, this end of the drainage connection lower tube 2 can be moved, so the upper end of the middle tube 3 can be plugged into the extension ring 11 of the drainage connection upper tube 1 first, and then the drainage connection lower tube 2 can be plugged into the lower end of the middle tube 3, and then the two threaded rings 8 can be rotated so that the threaded rings 8 are threadedly connected to the two outer rings 7 to realize the fixation of the middle tube 3.

[0036] like Figure 2 and Figure 4 As shown, a sealing ring 32 is mounted on the stepped groove 31. One side of the sealing ring 32 abuts against the bottom surface of the stepped groove 31, and the other side abuts against the bottom surface of the extension ring 11. The sealing ring 32 seals the connection between the intermediate pipe 3 and the upper and lower drainage connection pipes 1 and 2.

[0037] like Figure 2 and Figure 4 As shown, the outer wall of the threaded ring 8 is provided with anti-skid lines. The provision of the anti-skid lines can facilitate people to rotate the threaded ring 8.

[0038] like Figure 2 and Figure 3 As shown, the top of the overflow collection container 5 is fixedly connected with a connection port 51, and the nozzle 61 is detachably connected to the connection port 51. By setting the connection port 51 and the nozzle 61 as detachably connected, the waste liquid in the overflow collection container 5 can be easily poured out.

[0039] like Figure 2 and Figure 4 As shown, the height of the elastic valve 9 is higher than the communication position of the overflow pipe 4. This arrangement enables the overflow pipe 4 to smoothly guide the refluxed liquid.

[0040] like Figure 3 As shown, a liquid level alarm 10 is connected to the upper outer wall of the overflow pipe 4. The setting of the liquid level alarm 10 serves as a warning to people. As long as the liquid level in the overflow pipe 4 reaches a certain position, the liquid level alarm 10 will sound an alarm, which can remind people that the pipe is blocked, so that they can clean or replace the pipe.

[0041] The liquid level alarm 10 here is an existing mature technology and will not be described in detail here.

[0042] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A drainage connector for a hemodialysis machine, comprising an upper drainage connection tube (1) and a lower drainage connection tube (2), characterized in that: An intermediate pipe (3) is detachably connected between the upper drainage connection pipe (1) and the lower drainage connection pipe (2); an overflow pipe (4) is provided on the outer wall of the intermediate pipe (3); a U-shaped pipe (6) is fixedly connected to the end of the overflow pipe (4); a pipe opening (61) is fixedly connected to the lower end of the U-shaped pipe (6); and an overflow collection container (5) is connected to the lower end of the pipe opening (61).

2. A drainage connector for a hemodialysis machine according to claim 1, characterized in that: Three elastic valves (9) are fixedly connected to the inner wall of the intermediate tube (3), and gaps are provided between the three elastic valves (9).

3. A drainage connector for a hemodialysis machine according to claim 1 or 2, characterized in that: The outer walls of both ends of the intermediate tube (3) are threadedly connected with threaded rings (8), the outer walls of the drainage connection upper tube (1) and the drainage connection lower tube (2) are fixedly connected with outer rings (7), and the threaded rings (8) are threadedly connected to the outer rings (7).

4. A drainage connector for a hemodialysis machine according to claim 1 or 2, characterized in that: Both ends of the intermediate tube (3) are provided with step grooves (31), and the ends of the drainage connection upper tube (1) and the drainage connection lower tube (2) are fixedly connected with extension rings (11), which are plugged into the step grooves (31).

5. A drainage connector for a hemodialysis machine according to claim 4, characterized in that: A sealing ring (32) is sleeved on the step groove (31), one side of the sealing ring (32) abuts against the bottom surface of the step groove (31), and the other side abuts against the bottom surface of the extension ring (11).

6. The drainage connector for a hemodialysis machine according to claim 3, characterized in that: The outer wall of the threaded ring (8) is provided with anti-slip grooves.

7. A drainage connector for a hemodialysis machine according to claim 1, 2, 5 or 6, characterized in that: The top of the overflow collection container (5) is fixedly connected with a connection port (51), and the pipe port (61) is detachably connected to the connection port (51).

8. A drainage connector for a hemodialysis machine according to claim 2, 5 or 6, characterized in that: The height of the elastic valve (9) is higher than the communication position of the overflow pipe (4).

9. A drainage connector for a hemodialysis machine according to claim 1, 2, 5 or 6, characterized in that: The upper outer wall of the overflow pipe (4) is connected to a liquid level alarm (10).

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