Peripheral circulation module for hemodialysis water

Abstract

A water peripheral circulation module for hemodialysis relates to the field of water treatment and comprises two water segregators, a first diaphragm valve connected between the two water segregators and more than one hose connected to a matched water diversion port between the two water segregators, and the middle of the hose is connected with a connector through a second diaphragm valve. Compared with the prior art, the device has the advantages of being simple in structure, low in manufacturing cost and capable of adjusting the pressure difference.

Description

Technical Field

[0001] The invention relates to the field of water treatment, in particular to a peripheral circulation module for hemodialysis water. Background Art

[0002] At present, the centralized dialysate supply system for hemodialysis mainly uses a large circulation pipeline to connect each hemodialysis machine in series when supplying dialysate (or dialysate concentrate) to each dialysis machine. When the pipeline needs to be disinfected or the dialysate in the circulating tube needs to be circulated, the circulating pump in the main unit drives the liquid circulation in the pipeline; The problem with this pipeline layout is that each dialysis machine suction point requires a long pipeline to be connected to the large circulation pipeline so as to guide the transferred pure water from the large circulation pipeline to the hemodialysis machine. In this structure, during disinfection, the disinfectant cannot enter this section of the pipeline through the large circulation pipeline, resulting in the pipeline not being effectively disinfected. For this reason, someone invented the technology of patent CN202022216120.9, which sets a venturi tube at the liquid collection point of the large circulation pipeline, connects the circulation pipeline at both ends of the venturi tube, and connects the export port in the middle of the circulation pipeline to the hemodialysis machine. In this way, the pressure difference at both ends of the venturi tube is used to realize the introduction of the large circulation pipeline into the circulation pipeline. During normal use, the transferred pure water transported by the large circulation pipeline can be exported, and during disinfection, the disinfectant liquid can pass through the large circulation pipeline including the venturi tube and the circulation pipeline; This technology has high technical requirements for the Venturi tube to ensure that the circulation pipeline has sufficient pressure difference, which results in high cost and inconvenience in use. Moreover, once the structure of the Venturi tube is determined, the pressure difference of the circulation pipeline is fixed and cannot be adjusted in response to changes in the use environment (such as changes in the number of liquid collection points, which will cause a large change in the pressure difference). Summary of the invention

[0003] The object of the present invention is to provide a peripheral circulation module for hemodialysis water which has a simple structure, low manufacturing cost and can adjust the pressure difference.

[0004] The peripheral circulation module for hemodialysis water of the present invention is implemented as follows: it includes two water distributors, a first diaphragm valve connected between the two water distributors, and one or more hoses connected to the matching water distribution ports between the two water distributors, wherein the middle part of the hose is connected to the joint through the second diaphragm valve.

[0005] When in use, the two water dividers of the flow dividing module of the present invention are respectively connected in series to the large circulation pipeline. By adjusting the opening of the first diaphragm valve, the water pressure difference between the two water dividers can be adjusted, so that a part of the fluid in the large circulation pipeline passes through the two water dividers and the first diaphragm valve to complete the large circulation, and the other part of the fluid is introduced from the front water divider into the hose, and then flows into the rear water divider to complete the large circulation. If the connector is connected to the hemodialysis machine and the second diaphragm valve is opened, the fluid (ultrapure water) flowing through the hose flows to the hemodialysis machine; When disinfection is required, in addition to a portion of the disinfectant flowing through the two water distributors and the first diaphragm valve to complete the large circulation and disinfect the two water distributors and the first diaphragm valve, a portion of the disinfectant can also flow through the hose to disinfect the hose, thereby achieving disinfection of the diversion module.

[0006] Due to the structure of the diverter, when the fluid flows through the diverter, it will not be retained in the diverter to form a dead corner. The diaphragm valve, due to its structure, will also not have a dead corner. By adjusting the diaphragm valve, the opening of the diaphragm valve can be adjusted, and then the pressure difference between the two water diverters can be adjusted to ensure that there is enough water head to supply ultrapure water to the hemodialysis machine. During disinfection, the disinfectant can flow through various positions of the pipeline to achieve comprehensive disinfection. Moreover, during use, there will be no dead corners for bacteria to breed.

[0007] Compared with the prior art, the present invention has the advantages of simple structure, low manufacturing cost and ability to adjust pressure difference. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 This is a schematic diagram of the structure of the peripheral circulation module for hemodialysis water of the present invention; Figure 2 It is a schematic diagram of the large circulation pipeline; Figure 3 This is the structural principle diagram of the diaphragm valve.

[0009] Explanation of the accompanying reference numerals: A-peripheral circulation module for hemodialysis water; 1-water distributor; 2-first diaphragm valve; 3-water outlet; 4-hose; 5-second diaphragm valve; 6-connector; 7-water treatment system; 8-disinfection system; 9-hemodialysis machine; 10-valve; 11-arc protrusion; 12-diaphragm. DETAILED DESCRIPTION

[0010] The peripheral circulation module for hemodialysis water of the present invention is now described in further detail with reference to the accompanying drawings and embodiments: like Figure 1 As shown, the peripheral circulation module for hemodialysis water of the present invention is implemented as follows, including two water distributors 1, a first diaphragm valve 2 connected between the two water distributors 1, and one or more hoses 4 connected to the matching water distribution port 3 between the two water distributors 1, and the middle part of the hose 4 is connected to the connector 6 through the second diaphragm valve 5.

[0011] like Figure 2 As shown, when in use, the two water distributors 1 of the hemodialysis water peripheral circulation module A of the present invention are respectively connected in series to the large circulation pipeline, and the water treatment system 7 supplies ultrapure water to the large circulation pipeline, or the disinfection system 8 supplies disinfectant water to the large circulation pipeline. By adjusting the opening of the first diaphragm valve 2, the water pressure difference between the two water distributors 1 can be adjusted, so that a part of the fluid in the large circulation pipeline passes through the two water distributors 1 and the first diaphragm valve 2 to complete the large circulation, and the other part of the fluid is introduced from the front water distributor 1 into the hose 4, and then flows through the rear water distributor 1 to complete the large circulation. If the connector 6 is connected to the hemodialysis machine 9 and the second diaphragm valve 5 is opened, the fluid (ultrapure water) flowing through the hose 4 flows to the hemodialysis machine 9; When disinfection is required, in addition to a portion of the disinfectant flowing through the two water dividers 1 and the first diaphragm valve 2 to complete the large circulation and disinfect the two water dividers 1 and the first diaphragm valve 2, a portion of the disinfectant can also flow through the hose 4 to disinfect the hose 4, thereby achieving the disinfection of the diversion module A for the centralized fluid supply of hemodialysis.

[0012] like Figure 3 As shown, the basic structure of the diaphragm valve is that the bottom of the valve 10 is flat or has an arc-shaped protrusion 11, and the diaphragm 12 driven by power moves from top to bottom in the form of a convex arc surface to achieve the effect of closing or adjusting the opening. Since the bottom of the valve 10 is flat or has an arc-shaped protrusion 11, and the diaphragm 12 is also a convex arc surface, there is no dead angle when the fluid passes through the valve 10, thereby avoiding the breeding of bacteria due to fluid stagnation.

[0013] Preferably, flanges 13 are provided at the two ports of the water distributor 1, the caliber of one end of the water distributor 1 matches the caliber of the inlet and outlet of the first diaphragm valve 2, and the caliber of the other end of the water distributor 1 matches the caliber of the large circulation pipeline. The flange and caliber matching design ensures that the large circulation pipeline fluid flows in a laminar flow when passing through the water distributor 1, and there will be no stagnation and dead corners.

Claims

1. A peripheral circulation module for hemodialysis water, characterized in that: It includes two water distributors, a first diaphragm valve connected between the two water distributors, and one or more hoses connected to the matching water distribution ports between the two water distributors. The middle part of the hose is connected to the joint through the second diaphragm valve. The diaphragm valve is a valve whose bottom is flat or convex at the valve surface. The diaphragm driven by power moves from top to bottom in the form of a convex arc surface to achieve the effect of closing or adjusting the opening.

2. The peripheral circulation module for hemodialysis water according to claim 1, characterized in that: Flanges are provided at the two ends of the water distributor. The caliber of one end of the water distributor matches the caliber of the inlet and outlet of the first diaphragm valve, and the caliber of the other end of the water distributor matches the diameter of the large circulation pipeline.

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