CN209916857U

CN209916857U - Modified nephrology dept pressurization ultrafiltration device

Info

Publication number: CN209916857U
Application number: CN201821583355.8U
Authority: CN
Inventors: 张志坚; 孙铸兴; 王凉; 刘斌; 刘晓斌; 陈涵枝; 祁真; 周薇; 张渊
Original assignee: Wuxi Peoples Hospital
Current assignee: Wuxi Peoples Hospital
Priority date: 2018-09-27
Filing date: 2018-09-27
Publication date: 2020-01-10
Anticipated expiration: 2028-09-27

Abstract

The utility model relates to the technical field of machinery, in particular to an improved pressurizing ultrafiltration device for nephrology department, which comprises an external barrel, wherein a cavity is arranged inside the external barrel, an ultrafiltration membrane is arranged inside the cavity, a filtering chamber is arranged inside the ultrafiltration membrane, a liquid inlet pipe is arranged on the bottom wall of the cavity, a liquid outlet pipe is arranged on the top wall of the cavity, liquid sucking and draining devices are respectively arranged in the liquid inlet pipe and the liquid outlet pipe, each liquid sucking and draining device comprises a fixed disc, and a pressurizing device is also arranged in the filtering chamber, the utility model separates the external barrel from the ultrafiltration membrane, avoids mixing of stock solution and filtered filtrate to cause filtering failure, and realizes filtering of the stock solution through the pressurizing device and the liquid sucking and draining devices, ensures that the filtering of the stock solution is cleaner, and solves the problem that the stock solution cannot be completely filtered by the general pressurizing ultrafiltration device, and the problem of filtration failure is caused by mixing of the stock solution and the filtered filtrate very easily.

Description

Modified nephrology dept pressurization ultrafiltration device

Technical Field

The utility model relates to the technical field of machinery, specifically a modified nephrology dept pressurization ultrafiltration device.

Background

Ultrafiltration is one of the membrane separation techniques using pressure as the driving force. The pore diameter of the membrane is between 20 and 1000A DEG for the purpose of separating macromolecules from small molecules. The hollow fiber ultrafilter (membrane) has the advantages of high filling density in a unit container, small occupied area and the like. The pressure ultrafiltration device is also generally needed to be used for performing operations on patients in medical nephrology, and the general pressure ultrafiltration device can not completely filter stock solution in the pressure filtration process, and the stock solution is very easy to mix with filtered filtrate, so that the filtration failure is caused. In view of this, we propose an improved nephrology pressurization ultrafiltration device.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a modified nephrology dept pressurization ultrafiltration device to solve the general pressurization ultrafiltration device who provides in the above-mentioned background art and filter unclean to the stoste, and cause the mixed problem of filtrating after stoste and filtration very easily.

In order to achieve the above object, the utility model provides a following technical scheme:

an improved pressurization ultrafiltration device for nephrology department comprises an external barrel, wherein a cavity is arranged inside the external barrel, an ultrafiltration membrane is arranged inside the cavity, a filtering cavity is arranged inside the ultrafiltration membrane, a liquid inlet pipe is arranged on the bottom wall of the cavity, a liquid outlet pipe is arranged on the top wall of the cavity, the liquid inlet pipe and the liquid outlet pipe are both communicated with the filtering cavity, and liquid suction and discharge devices are respectively arranged in the liquid inlet pipe and the liquid outlet pipe;

each liquid suction and discharge device comprises a fixed disc, a plurality of liquid through holes which are arranged in an annular equal interval mode are formed in each fixed disc, a connecting disc is arranged below each fixed disc, a liquid inlet hole is formed in each connecting disc, two mutually symmetrical guide pillars are arranged on each connecting disc, a steel ball is further arranged between each fixed disc and the corresponding connecting disc, and the top ends of the two guide pillars penetrate through the steel ball and are fixedly connected with the fixed disc;

the cavity wall of the cavity is also provided with a filtered water outlet pipe which is communicated with the outside, and the inside of the filtering cavity is also provided with a pressurizing device.

Preferably, the liquid inlet pipe and the liquid outlet pipe are communicated with the outside.

Preferably, two symmetrical guide holes are formed in each steel ball, and the two guide pillars respectively penetrate through the two guide holes.

Preferably, the fixed disk and the connecting disk on one of the liquid suction and discharge devices are tightly bonded on the pipe wall of the liquid inlet pipe, and the fixed disk and the connecting disk on the other liquid suction and discharge device are tightly bonded on the pipe wall of the liquid outlet pipe.

Preferably, the pressurizing device comprises a hydraulic cylinder arranged on the wall of the filtering chamber, a rubber disc is arranged at the tail end of a telescopic shaft of the hydraulic cylinder, and a sealing ring is tightly bonded on one side surface of the rubber disc close to the hydraulic cylinder.

Preferably, the size of the rubber disc is adapted to the size of the filter chamber.

Preferably, the diameter of the steel ball is larger than that of the liquid through hole, and the diameter of the steel ball is larger than that of the liquid inlet hole.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses simple structure, high durability and convenient use, it is separated with the milipore filter through the external section of thick bamboo that sets up, avoid appearing the stock solution and mix with the filtrating later filtrating, cause and filter failure, in addition through the pressure device who sets up and inhale drain, the reciprocating motion of rubber disc realizes inhaling the filtration cavity with the stock solution in, pass through the rubber disc again and will store the stock solution in the filtration cavity and pressurize, the micromolecule spills over from the milipore filter, and enter into the cavity, further from straining back outlet pipe discharge, and impurity can only be followed the drain pipe and discharged, guarantee its filterable cleaner, it is at the filterable in-process of pressurization to have solved general pressurization ultrafiltration device, it is unclean to the stock solution filtration, and cause the stock solution to mix with filtrating later filtrating very easily, cause the problem of filtering failure.

Drawings

Fig. 1 is a perspective view of the present invention;

fig. 2 is a cross-sectional view of the present invention;

fig. 3 is a perspective view of the pressurizing device of the present invention;

fig. 4 is a perspective view of the liquid suction and discharge device of the present invention.

In the figure: 1. an external cylinder; 11. a cavity; 2. ultrafiltration membranes; 21. a filtration chamber; 3. a liquid inlet pipe; 4. A liquid outlet pipe; 5. a liquid suction and discharge device; 51. fixing the disc; 511. a liquid through hole; 52. a connecting disc; 521. a liquid inlet hole; 53. A guide post; 54. a steel ball; 541. a guide hole; 6. discharging a water pipe after filtering; 7. a pressurizing device; 71. a hydraulic cylinder; 72. a rubber disc; 73. and (5) sealing rings.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Referring to fig. 1-4, the present invention provides a technical solution:

the utility model provides a modified nephrology dept pressurization ultrafiltration device, as shown in fig. 1 and fig. 2, including external section of thick bamboo 1, the inside of external section of thick bamboo 1 is equipped with cavity 11, the inside of cavity 11 is equipped with milipore filter 2, the inside of milipore filter 2 is equipped with filters cavity 21, be equipped with feed liquor pipe 3 on the diapire of cavity 11, be equipped with drain pipe 4 on the roof of cavity 11, feed liquor pipe 3 and drain pipe 4 all are linked together with the external world, and feed liquor pipe 3 and drain pipe 4 all are linked together with filtering cavity 21, all install in feed liquor pipe 3 and the drain pipe 4 and inhale drain 5.

In this embodiment, the cavity wall of the cavity 11 is provided with a through hole for the liquid inlet pipe 3 and the liquid outlet pipe 4 to pass through, and the liquid inlet pipe 3 and the liquid outlet pipe 4 are tightly bonded and fixed with the wall of the through hole on the cavity wall of the cavity 11.

Specifically, the ultrafiltration membrane 2 is an American Korea PURON MP8081 external pressure type KOCH hollow fiber ultrafiltration membrane, and a matched circuit and a power supply are also provided by the manufacturer; furthermore, the present invention relates to the prior art for circuits, electronic components and modules, which can be implemented by those skilled in the art without extra description, and the protection of the present invention does not relate to the improvement of the structure and the working principle thereof.

Furthermore, the wall of the filtering cavity 21 is provided with a through hole for the liquid inlet pipe 3 and the liquid outlet pipe 4 to pass through, and the liquid inlet pipe 3 and the liquid outlet pipe 4 are tightly bonded and fixed with the wall of the through hole on the wall of the filtering cavity 21.

As shown in fig. 2 and 4, each liquid suction and discharge device 5 includes a fixed plate 51, a plurality of liquid through holes 511 are formed in each fixed plate 51 and are arranged in an annular equal interval, a connection plate 52 is installed below each fixed plate 51, the fixed plate 51 and the connection plate 52 on one liquid suction and discharge device 5 are tightly adhered to the pipe wall of the liquid inlet pipe 3, the fixed plate 51 and the connection plate 52 on the other liquid suction and discharge device 5 are tightly adhered to the pipe wall of the liquid outlet pipe 4, a liquid inlet hole 521 is formed in each connection plate 52, two guide posts 53 which are symmetrical to each other are installed on each connection plate 52, a steel ball 54 is further arranged between the fixed plate 51 and the connection plate 52, and the top ends of the two guide posts 53 penetrate through the steel ball 54 and are fixedly connected with the fixed plate 51.

In addition, two guide holes 541 which are symmetrical to each other are formed in each steel ball 54, the two guide posts 53 respectively penetrate through the two guide holes 541, and the two guide posts 53 are connected with the two guide holes 541 in a sliding manner.

As shown in fig. 1, 2 and 3, a filtered water outlet pipe 6 is further arranged on the cavity wall of the cavity 11, the filtered water outlet pipe 6 is communicated with the outside, a pressurizing device 7 is further arranged in the filtering cavity 21, the pressurizing device 7 comprises a hydraulic cylinder 71 arranged on the cavity wall of the filtering cavity 21, a rubber disc 72 is arranged at the tail end of a telescopic shaft of the hydraulic cylinder 71, the size of the rubber disc 72 is matched with that of the filtering cavity 21, and a sealing ring 73 is tightly bonded on one side surface of the rubber disc 72 close to the hydraulic cylinder 71.

Specifically, the rubber disc 72 is made of PP, which is polypropylene plastic. It is non-toxic and odorless, and can be soaked in boiling water of 100 deg.C without deformation and damage, and the common organic solvents of acid and alkali have no effect on it, so that it can be used in medical appliances.

It should be noted that the diameter of the steel ball 54 is larger than the diameter of the liquid through hole 511, and the diameter of the steel ball 54 is larger than the diameter of the liquid inlet hole 521, so that the liquid inlet hole 521 can be blocked when the steel ball 54 falls down, and the filtered impurities can flow out of the liquid through hole 511 when the steel ball 54 rises.

It is worth noting that the hydraulic cylinder 71 adopts an SMC series original CDG1BA50-200 type hydraulic cylinder produced by Shentuo pneumatic element factory of Liu city, le Qing, and a matched circuit and a power supply thereof are also provided by the factory; furthermore, the present invention relates to circuits, electronic components and modules, which are known in the art, and can be implemented by those skilled in the art without exception, and the present invention also does not relate to improvements to software and methods.

When the improved pressurized ultrafiltration device for nephrology department of the embodiment is used, the liquid inlet pipe 3 is connected with liquid which needs to be filtered from the outside, the hydraulic cylinder 71 is connected with an external power supply, the telescopic shaft on the hydraulic cylinder 71 starts to extend to drive the rubber disc 72 to move towards the direction far away from the hydraulic cylinder 71, when the rubber disc 72 moves, the liquid between the rubber disc 72 and the filtering chamber 21 is extruded, so that small molecules in the liquid between the rubber disc 72 and the filtering chamber 21 are separated out from the ultrafiltration membrane 2 and enter the cavity 11, and then flow out from the filtered water outlet pipe 6, so that the original liquid and the filtered liquid are prevented from being mixed together, in addition, as the rubber disc 72 continuously moves forwards, the pressure between the rubber disc 72 and the filtering chamber 21 is increased, after the pressure is increased, the steel balls 54 in the liquid outlet pipe 4 rise, at this time, the liquid inlet hole 521 below the steel balls 54 in the liquid outlet pipe 4 is not blocked, the steel ball 54 in the liquid inlet pipe 3 descends, the steel ball 54 in the liquid inlet pipe 3 blocks the liquid inlet hole 521 below the steel ball, impurities are discharged from the liquid outlet pipe 4 along with the continuous forward movement of the rubber disc 72, and the first process is finished;

in addition, when the telescopic shaft of the hydraulic cylinder 71 contracts, the rubber disc 72 is driven to move back, the steel ball 54 in the liquid outlet pipe 4 automatically falls under the action of gravity, and the liquid through hole 521 below the rubber disc is blocked, and along with the continuous movement of the rubber disc 72, the pressure between the rubber disc 72 and the wall of the filtering chamber 21 begins to decrease, so that the steel ball 54 in the liquid inlet pipe 3 rises, at this time, the steel ball 54 in the liquid inlet pipe 3 does not block the liquid through hole 521 below the same any more, and then the stock solution will enter the interior of the filtering chamber 21 along the liquid inlet pipe 3, at this time, the second process is finished, then, the first process is repeated, the above operation processes realize the filtration of the stock solution, the problems that the prior pressurized ultrafiltration device can not filter the stock solution completely, the original liquid is not filtered cleanly, and the problem of filtration failure caused by mixing of the original liquid and the filtered filtrate is very easy to occur.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the description in the above embodiments and the description is only preferred examples of the present invention, and is not intended to limit the present invention, and that the present invention can have various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications all fall into the scope of the claimed invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a modified nephrology department pressurization ultrafiltration device, includes external section of thick bamboo (1), its characterized in that: a cavity (11) is formed in the external barrel (1), an ultrafiltration membrane (2) is arranged in the cavity (11), a filtering cavity (21) is formed in the ultrafiltration membrane (2), a liquid inlet pipe (3) is arranged on the bottom wall of the cavity (11), a liquid outlet pipe (4) is arranged on the top wall of the cavity (11), the liquid inlet pipe (3) and the liquid outlet pipe (4) are communicated with the filtering cavity (21), and liquid suction and discharge devices (5) are arranged in the liquid inlet pipe (3) and the liquid outlet pipe (4);

each liquid suction and drainage device (5) comprises a fixed disc (51), a plurality of liquid through holes (511) which are arranged in an annular and equidistant mode are formed in each fixed disc (51), a connecting disc (52) is arranged below each fixed disc (51), a liquid inlet hole (521) is formed in each connecting disc (52), two mutually symmetrical guide pillars (53) are arranged on each connecting disc (52), a steel ball (54) is further arranged between each fixed disc (51) and each connecting disc (52), and the top ends of the two guide pillars (53) penetrate through the steel ball (54) and are fixedly connected with the fixed disc (51);

the cavity wall of the cavity (11) is also provided with a filtered water outlet pipe (6), the filtered water outlet pipe (6) is communicated with the outside, and the inside of the filtering cavity (21) is also provided with a pressurizing device (7).

2. The improved nephrology compression ultrafiltration device of claim 1, wherein: the liquid inlet pipe (3) and the liquid outlet pipe (4) are communicated with the outside.

3. The improved nephrology compression ultrafiltration device of claim 1, wherein: two guide holes (541) which are symmetrical to each other are formed in each steel ball (54), and the two guide columns (53) penetrate through the two guide holes (541) respectively.

4. The improved nephrology compression ultrafiltration device of claim 1, wherein: the fixed disc (51) and the connecting disc (52) on one of the liquid suction and drainage devices (5) are tightly bonded on the pipe wall of the liquid inlet pipe (3), and the fixed disc (51) and the connecting disc (52) on the other liquid suction and drainage device (5) are tightly bonded on the pipe wall of the liquid outlet pipe (4).

5. The improved nephrology compression ultrafiltration device of claim 1, wherein: the pressurizing device (7) comprises a hydraulic cylinder (71) arranged on the wall of the filtering chamber (21), a rubber disc (72) is arranged at the tail end of a telescopic shaft of the hydraulic cylinder (71), and a sealing ring (73) is tightly bonded on one side face, close to the hydraulic cylinder (71), of the rubber disc (72).

6. The improved nephrology compression ultrafiltration device of claim 5, wherein: the rubber disc (72) is adapted in size to the filter chamber (21).

7. The improved nephrology compression ultrafiltration device of claim 1, wherein: the diameter of the steel ball (54) is larger than that of the liquid through hole (511), and the diameter of the steel ball (54) is larger than that of the liquid inlet hole (521).