CN213554255U - Venturi shunting module for hemodialysis concentrated liquid supply - Google Patents
Venturi shunting module for hemodialysis concentrated liquid supply Download PDFInfo
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- CN213554255U CN213554255U CN202022216120.9U CN202022216120U CN213554255U CN 213554255 U CN213554255 U CN 213554255U CN 202022216120 U CN202022216120 U CN 202022216120U CN 213554255 U CN213554255 U CN 213554255U
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- 239000007788 liquid Substances 0.000 title claims abstract description 42
- 238000001631 haemodialysis Methods 0.000 title claims abstract description 21
- 230000000322 hemodialysis Effects 0.000 title claims abstract description 20
- 230000000149 penetrating effect Effects 0.000 claims abstract description 4
- 238000000502 dialysis Methods 0.000 claims description 13
- 238000003754 machining Methods 0.000 claims description 5
- 230000007704 transition Effects 0.000 claims description 5
- 238000005266 casting Methods 0.000 claims description 3
- 229920003023 plastic Polymers 0.000 claims description 3
- 239000004033 plastic Substances 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 238000002347 injection Methods 0.000 claims 1
- 239000007924 injection Substances 0.000 claims 1
- 238000005265 energy consumption Methods 0.000 abstract description 7
- 239000012141 concentrate Substances 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 description 7
- 239000012530 fluid Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000001133 acceleration Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000008602 contraction Effects 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 238000001746 injection moulding Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model relates to a hemodialysis field, especially a venturi reposition of redundant personnel module that is used for hemodialysis to concentrate to supply liquid. This reposition of redundant personnel module includes: a module body (20); a main flow passage (27) penetrating the module body (20); branch flow passages communicated with the main flow passage (27), wherein the number of the branch flow passages is at least two; wherein, at the place where the second branch flow channel (23) communicates with the main flow channel (27), the cross section of the main flow channel (27) becomes smaller. The utility model has the advantages that: the problems that the liquid supply flow is lengthened, the circular flow resistance is increased, bubbles are easily accumulated at local high points and the like due to a mode that liquid supply pipelines are connected in series one by one through hemodialysis machines adopted by common centralized liquid supply are solved, and therefore relay pumps distributed in the liquid supply flow can be reduced, the energy consumption and the failure rate are reduced, and the overall reliability of the system is improved.
Description
Technical Field
The utility model relates to a hemodialysis field, especially a venturi reposition of redundant personnel module that is used for hemodialysis to concentrate to supply liquid.
Background
At present, when a concentrated dialysate supply system for hemodialysis major supplies dialysate (or dialysate concentrate) to each dialysis machine, a large circulation pipeline is mainly adopted to connect each hemodialysis machine in series. When the pipeline needs disinfection or dialysate in the circulating pipe, the circulating pump in the main machine pushes the liquid in the pipeline to circulate. The working principle is as shown in figure 1.
The pipeline layout has the following problems: the liquid suction point of each dialysis machine is a certain height above the ground, so that the dialysate conveying pipeline is fluctuated; once air enters the pipeline, the liquid circulation resistance of the whole pipeline is high due to the superposition effect of the water heads, so that one or more relay pumps are often added in the pipeline flow path in order to realize normal circulation.
The above problems lead to an increase in equipment cost, and also increase in system operation energy consumption and failure rate. In order to solve the problem, the inventor designs a shunting module according to the Venturi principle, adds the shunting module to the liquid suction point position of each dialysis machine, and can effectively improve the problems.
Disclosure of Invention
The invention of the utility model aims to: aiming at the existing problems, the venturi shunting module for hemodialysis centralized liquid supply is provided, and the energy consumption and the failure rate of the system can be effectively reduced.
A venturi diverter module for a centralized liquid supply for hemodialysis, comprising: a module body; a main flow passage penetrating the module body; the branch flow channels are communicated with the main flow channel, and the number of the branch flow channels is at least two; wherein, the cross section of the main runner diminishes at the place where the branch runner near the outlet communicates with the main runner. When the dialysis machine works, the main flow channel is communicated with the dialysate conveying pipeline; the branch flow passages are communicated with each other through a liquid suction pipe of the dialysis machine.
By adopting the technical scheme, when the dialysate flows through the shunting module, the branch flow channel close to the inlet and the branch flow channel close to the outlet have different flow rates due to different cross section areas, and the branch flow channel close to the inlet has a lower flow rate. According to bernoulli's equation: p +1/2 ρ v2+ ρ gh ═ C, at which time p +1/2 ρ v2Approximately a constant, v is the flow velocity of the fluid at that point, ρ is the density of the fluid, g is the gravitational acceleration, h is the height at that point, and C is a constant. The higher the velocity v somewhere in the flow path, the lower the pressure p. Therefore, the pressure in the branch channel near the inlet is higher than that in the branch channel near the outlet, and under the action of the pressure difference, the liquid flows into the liquid suction pipe of the dialysis machine from the branch channel near the inlet and flows into the main channel from the branch channel near the outlet. Even if the dialysate conveying pipeline enters into the airThe air is lighter than the liquid and directly flows away from the dialysate conveying pipeline, so that the possibility of entering the branch flow channel downwards is reduced, the possibility of incapability of flowing due to the fact that the air plug forms differential pressure in the branch flow channel to offset the Venturi effect can be reduced, and therefore energy loss of the flow can be effectively reduced through the structure, and energy consumption of the system is reduced. The problems that the liquid supply flow is lengthened, the circular flow resistance is increased, bubbles are easily accumulated at local high points and the like due to a plurality of fluctuation of the flow caused by a mode that liquid supply pipelines are connected in series one by one through hemodialysis machines adopted by common centralized liquid supply are solved, so that relay pumps distributed in the liquid supply flow can be reduced, the energy consumption and the failure rate are reduced, and the overall reliability of the system is improved
As the preferred scheme of the utility model, the sprue cross-section changes gradually through the changeover portion. The transition section can avoid the increase of flow resistance caused by sudden change of the pipe diameter, and further reduce the energy loss of liquid flow.
As the preferred scheme of the utility model, the cross section of sprue is circular.
As the preferred scheme of the utility model, the cross section of the branch flow channel is circular.
As the preferred scheme of the utility model, the cross sectional area of sprue is less than the cross sectional area of sprue.
Set up the runner cross-section for circular in the above-mentioned scheme, can make things convenient for the processing of lathe and drilling machine in the machining, improve the efficiency of manufacturing to reduce the cost of production.
As the preferred scheme of the utility model, the sprue passes through pagoda joint or cutting ferrule and connects and be connected with dislysate pipeline.
As the preferred proposal of the utility model, the branch flow channel is connected with the liquid suction pipe of the dialysis machine through the pagoda joint or the cutting ferrule joint.
As the utility model discloses a preferred scheme, the material of module body is high-quality plastics or stainless steel such as PP, PVFD, and these raw and other materials not only sources are extensive, and the machining of being convenient for moreover can effectively improve the reliability of product supply. When the batch size is large, the production can also be realized by adopting a mold injection molding or casting mode.
To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:
1. the problems that the liquid supply flow is lengthened, the circular flow resistance is increased, bubbles are easily accumulated at local high points and the like caused by a plurality of fluctuation of the flow due to the serial connection of liquid supply pipelines and hemodialysis machines one by one adopted by common centralized liquid supply are solved;
2. on the basis, the relay pumps distributed in the liquid supply flow can be reduced, the energy consumption and the failure rate are reduced, and the overall reliability of the system is further improved.
Drawings
FIG. 1 is a schematic diagram of the operation of a prior art dialysis center;
FIG. 2 is a schematic diagram of the operation of the apparatus of the present invention;
the following are marked in the figure: 10-branch liquid suction point, 11-dialysate conveying pipeline, 12-dialysis machine liquid suction pipe, 20-module body, 21-contraction part of main flow channel, 22-first branch flow channel, 23-second branch flow channel, 24-dialysate inlet, 25-dialysate outlet, 26-pipe diameter contraction transition section, 27-main flow channel, 200-hemodialysis centralized liquid supply system and 301-dialysis machine.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
Example 1, as shown in fig. 1-2:
a venturi diverter module for a centralized liquid supply for hemodialysis, comprising: a module body 20; a main flow passage 27 penetrating the module body 20; branch flow passages communicated with the main flow passage 27, the number of the branch flow passages is at least two; wherein, at the place where the second branch flow channel 23 communicates with the main flow channel 27, the cross section of the main flow channel 27 becomes smaller.
By adopting the technical scheme, when the dialysate flows through the shunt module,the liquid flow rates at the first branch flow channel 22 and the second branch flow channel 23 are different due to the difference of the inner diameters of the main flow channels 27, and the flow rate at the first branch flow channel 22 is slower. According to bernoulli's equation: p +1/2 ρ v2+ ρ gh ═ C, at which time p +1/2 ρ v2Approximately a constant, v is the flow velocity of the fluid at that point, ρ is the density of the fluid, g is the gravitational acceleration, h is the height at that point, and C is a constant. The higher the velocity v somewhere in the flow path, the lower the pressure p. Therefore, the pressure in the first branch flow passage 22 is higher than that in the second branch flow passage 23, and the liquid flows into the pipette of the dialysis machine from the first branch flow passage 22 and flows into the main pipeline from the second branch flow passage 23 under the action of the pressure difference. Even if air enters the pipette 12 of the dialysis machine, the air is lighter than liquid and directly flows away from the dialysate conveying pipeline 11, so that the possibility of the air entering the branch flow channel downwards is reduced, the possibility that the air cannot flow because the air plug forms pressure difference in the branch flow channel to offset the Venturi effect can be reduced, and therefore, the structure can effectively reduce the energy loss of the flow channel, and the energy consumption of the system is reduced.
Further, the section of the main flow passage 27 is gradually changed through the pipe diameter contraction transition section 26. The transition section is arranged to avoid the increase of flow resistance caused by sudden change of the pipe diameter, and further reduce the energy loss of liquid flow.
Further, the main flow passage 27 is circular in cross section.
Furthermore, the cross section of the branch flow channel is circular.
Further, the cross-sectional area of the branch flow channel is smaller than the cross-sectional area of the main flow channel 27.
The main runner and the branch runner are arranged to be circular in cross section in the scheme, so that machining of a lathe and a drilling machine in machining can be facilitated, production and manufacturing efficiency is improved, and production cost is reduced.
Further, the main flow channel 27 is connected to the dialysate delivery line 11 via a pagoda fitting or a bayonet fitting.
Further, the branch flow channel is connected with the dialysis machine pipette 12 through a pagoda joint or a ferrule joint.
Further, the module body 20 is made of high-quality plastic such as PP and PVFD, or stainless steel. The raw materials are wide in source, and the raw materials are wide in source, convenient to machine and capable of effectively improving the reliability of product supply. When the batch size is large, the production can also be realized by adopting a mold injection molding or casting mode.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. A venturi diverter module for a centralized liquid supply for hemodialysis, comprising:
a module body;
a main flow passage penetrating the module body;
branch flow passages communicated with the main flow passage, wherein the number of the branch flow passages is at least two;
wherein, the cross section of the main runner becomes smaller at the position where the branch runner near the outlet is communicated with the main runner.
2. The venturi flow divider module of claim 1, wherein the cross-section of the primary flow passage gradually changes through a transition section.
3. The venturi flow divider module of claim 2, wherein the cross-section of the primary flow passage is circular.
4. The venturi flow divider module of claim 3, wherein the cross-section of the branch flow channel is circular.
5. The venturi flow divider module for a centralized liquid supply for hemodialysis according to any one of claims 1-4, wherein the cross-sectional area of the branch flow channel is smaller than the cross-sectional area of the main flow channel.
6. The venturi flow-splitting module for a centralized liquid supply for hemodialysis of claim 5, wherein the primary flow passage is connected to a dialysate delivery conduit through a pagoda fitting or a bayonet fitting.
7. The venturi flow-splitting module for concentrated liquid supply for hemodialysis of claim 6, wherein the branch channel is connected to a dialysis machine pipette through a pagoda or bayonet fitting.
8. The venturi flow divider module of claim 7, wherein the module body is made of plastic or stainless steel.
9. The venturi flow divider module for centralized liquid supply for hemodialysis of claim 8, wherein the module body is made of PP or PVFD.
10. The venturi flow divider module for centralized liquid supply for hemodialysis according to any one of claims 8-9, wherein the flow divider module is manufactured by machining, mold injection or casting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022216120.9U CN213554255U (en) | 2020-09-30 | 2020-09-30 | Venturi shunting module for hemodialysis concentrated liquid supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022216120.9U CN213554255U (en) | 2020-09-30 | 2020-09-30 | Venturi shunting module for hemodialysis concentrated liquid supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213554255U true CN213554255U (en) | 2021-06-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022216120.9U Active CN213554255U (en) | 2020-09-30 | 2020-09-30 | Venturi shunting module for hemodialysis concentrated liquid supply |
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| Country | Link |
|---|---|
| CN (1) | CN213554255U (en) |
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2020
- 2020-09-30 CN CN202022216120.9U patent/CN213554255U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240909 Address after: No. 1-401, Building 17, No. 1919 Shuangyan Road, Chengdu Cross Strait Science and Technology Industrial Development Park, Wenjiang District, Chengdu City, Sichuan Province, China 611130 Patentee after: Wangcheng Medical Technology (Chengdu) Co.,Ltd. Country or region after: China Address before: No.24, unit 1, building 5, No.7 Xinghan Road, Jinniu District, Chengdu, Sichuan 610000 Patentee before: Xu Yong Country or region before: China |
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| TR01 | Transfer of patent right |