CN219185199U - Dry powder barrel for hemodialysis on-line and hemodialysis machine - Google Patents
Dry powder barrel for hemodialysis on-line and hemodialysis machine Download PDFInfo
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- CN219185199U CN219185199U CN202223002163.2U CN202223002163U CN219185199U CN 219185199 U CN219185199 U CN 219185199U CN 202223002163 U CN202223002163 U CN 202223002163U CN 219185199 U CN219185199 U CN 219185199U
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- hemodialysis
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Abstract
The utility model provides a dry powder barrel for hemodialysis on-line and a hemodialysis machine, wherein the dry powder barrel for hemodialysis on-line comprises a barrel body, a barrel cover and a filtering device, the barrel cover is arranged at the top of the barrel body, a liquid outlet is arranged at the bottom of the barrel body, a liquid inlet is arranged on the barrel cover, and the filtering device is arranged in the barrel body and is close to the liquid outlet; the filtering device comprises a first filtering piece and a second filtering piece which are arranged along the axial direction of the barrel body, and the second filtering piece is positioned at one side of the first filtering piece, which is close to the liquid outlet; the first filter piece is disk-shaped, and the outer periphery of the first filter piece is connected with the barrel body, and the opening of the first filter piece is arranged back to the liquid outlet. The dry powder barrel for hemodialysis on-line is not easy to cause the phenomena of filter screen damage, screen blockage or bubble increase due to unsmooth liquid flow.
Description
Technical Field
The utility model relates to the field of medical equipment, in particular to a dry powder barrel for hemodialysis on-line and a hemodialysis machine.
Background
Currently, the most commonly used dialysis treatment equipment comprises a dialysis machine and a dry powder bucket for hemodialysis, wherein the dry powder bucket is connected with the dialysis machine, and hemodialysis concentrate is arranged inside the dry powder bucket and is prepared into qualified dialysate with dialysis water through a dialysate supply system.
When the dry powder barrel is used, the upper port and the lower port are in contact with the rubber sealing rings at the interfaces of the dialysis machine, so that the communication is realized. However, in the actual use process, the dialysis machine alarm often occurs due to the fact that the interface is not tightly sealed. On one hand, the reason of the poor sealing is that the interference fit between the port of the dry powder barrel and the interface of the dialysis machine is easy to occur because the port of the dry powder barrel has deviation in size; on the other hand, the sealing rubber ring at the interface of the dialysis machine is aged and hardened to lose elasticity, so that an effective elastic seal cannot be formed.
In addition, when the dry powder barrel is used, the condition that part of dialysis powder is not dissolved easily occurs, the existing filter screen is a single-layer plane filter screen, the plane filter screen is easy to deform and damage due to stress, and the phenomenon that bubbles are increased due to unsmooth liquid flow caused by blockage is easy to occur.
Disclosure of Invention
The first object of the utility model is to provide a dry powder bucket for hemodialysis on-line, which is not easy to cause phenomena of filter screen breakage, filter screen blockage or bubble increase due to unsmooth liquid flow.
A second object of the present utility model is to provide a hemodialysis machine having the dry powder cartridge described above.
In order to achieve the first object, the utility model provides a dry powder barrel for hemodialysis on-line, which comprises a barrel body, a barrel cover and a filtering device, wherein the barrel cover is arranged at the top of the barrel body, a liquid outlet is arranged at the bottom of the barrel body, a liquid inlet is arranged on the barrel cover, and the filtering device is arranged in the barrel body and is close to the liquid outlet; the filtering device comprises a first filtering piece and a second filtering piece which are arranged along the axial direction of the barrel body, and the second filtering piece is positioned at one side of the first filtering piece, which is close to the liquid outlet; the first filter piece is disk-shaped, and the outer periphery of the first filter piece is connected with the barrel body, and the opening of the first filter piece is arranged back to the liquid outlet.
According to the scheme, the filter area of the disc-shaped three-dimensional filter component can be effectively increased, meanwhile, the inclined filter component can play a certain buffering role on impact of fluid, the stress of the filter screen is smaller than that of a conventional plane filter screen, the phenomenon that the filter screen is broken, the filter screen is blocked or bubbles are increased due to unsmooth liquid flow is avoided, and meanwhile, a double-layer filter screen structure is adopted, multiple filtration of dialysate can be achieved, and the second filter piece on the lower side can effectively support the first filter piece on the upper side.
In a preferred scheme, the first filter element comprises a first filter support and a first filter screen, the first filter support comprises a first support main body part and a first abutting part, the first support main body part is in a grid shape, the first filter screen covers the side wall of the first support main body part far away from the liquid outlet, and the first abutting part surrounds and is connected to the radial outer side of the first support main body part; the inner peripheral wall of the barrel body is provided with a first limiting protrusion, and the first abutting part abuts against the first limiting protrusion and is in limiting fit in the axial direction of the barrel body.
Therefore, the first limiting protrusion and the second filter piece can be respectively matched with the first filter piece in the axial direction of the barrel body, and stable limiting of the first filter piece is realized.
In a preferred scheme, the second filter piece is in a disc shape, the outer periphery of the second filter piece is connected with the barrel body, and the opening of the second filter piece is arranged towards the liquid outlet.
Therefore, the second filter piece is arranged in a disc shape with an opening facing the liquid outlet, and the first filter piece can be stably supported.
The second filter element comprises a second filter support and a second filter screen, wherein the second filter support comprises a second support main body part and a second abutting part, the second support main body part is in a grid shape, the second filter screen covers the side wall of the second support main body part far away from the liquid outlet, and the second abutting part surrounds and is connected to the radial outer side of the second support main body part; the inner peripheral wall of the barrel body is provided with a second limiting protrusion, and the second abutting part abuts against the second limiting protrusion and is in limiting fit in the axial direction of the barrel body.
Therefore, the second limiting protrusion and the bottom wall of the barrel body can be respectively matched with the second filter element in the axial direction of the barrel body, and stable limiting of the second filter element is realized.
The first abutting part is obliquely arranged relative to the axial direction of the barrel body, and gradually moves away from the first bracket main body part from one end connected with the first bracket main body part to one end abutted with the first limiting protrusion; and/or the second abutting part is obliquely arranged relative to the axial direction of the barrel body, and the second abutting part is gradually far away from the second bracket main body part from one end connected with the second bracket main body part to one end abutted with the second limiting protrusion.
Therefore, the first abutting part and the second abutting part which are obliquely arranged can elastically deform in the radial direction, so that quick assembly is realized, and the first abutting part and the second abutting part can be prevented from being separated from the corresponding limiting protrusions.
In a preferred scheme, a positioning part is further arranged on one side, facing the second filter element, of the first filter element, and the positioning part is positioned in the middle of the first filter element; one side of the second filter element facing the first filter element is provided with a matching part, one of the positioning part and the matching part is a groove, the other is a bulge, and the matching part and the positioning part are in plug-in matching along the axial direction of the barrel body.
Therefore, the limit of the first filter piece relative to the second filter piece can be further realized through the plug-in matching of the positioning part and the matching part, and the first filter piece is prevented from being overturned due to uneven stress.
In a preferred embodiment, the second filter element has a higher filtration accuracy than the first filter element.
As a result, the second filter element located at the lower side has a higher filtration accuracy, and the filtration accuracy of the dialysate can be further improved.
In a preferred scheme, the peripheral wall of at least one of the liquid inlet and the liquid outlet is wrapped with an elastic sealing layer.
Therefore, a layer of flexible silica gel layer is stuck on the peripheral wall of the liquid inlet and/or the liquid outlet, so that the elastic fitting degree of the liquid inlet, the liquid outlet and the interface of the dialysis machine can be increased, the better compaction and sealing effects are realized, and the equipment alarm fault caused by slight air leakage of the connecting port is avoided.
The liquid inlet and/or the liquid outlet provided with the elastic sealing layer are cylindrical, and the thickness of the elastic sealing layer is gradually reduced from one end close to the barrel to one end far from the barrel along the axial direction of the barrel; or the liquid inlet and/or the liquid outlet provided with the elastic sealing layer are/is in a round table shape, and the thickness of the elastic sealing layer is unchanged along the axial direction of the barrel body from one end close to the barrel body to one end far away from the barrel body, wherein the outer diameter of the liquid inlet and/or the liquid outlet is gradually reduced.
Therefore, the thickness of the elastic sealing layer in the axial direction can compensate the dimensional deviation generated by processing the liquid inlet and the liquid outlet of the dry powder barrel, and the leakage caused by dimensional interference during connection is avoided.
In order to achieve the second object, the present utility model provides a hemodialysis machine, which comprises the dry powder barrel for hemodialysis on-line.
Drawings
FIG. 1 is a block diagram of an embodiment of a dry powder cartridge for hemodialysis on-line of the present utility model.
FIG. 2 is a cross-sectional view of an embodiment of a dry powder cartridge for hemodialysis on-line of the present utility model.
Fig. 3 is a partial enlarged view at a in fig. 2.
Fig. 4 is a partial enlarged view at B in fig. 2.
Fig. 5 is a partial enlarged view at C in fig. 2.
The utility model is further described below with reference to the drawings and examples.
Detailed Description
Referring to fig. 1-5, a hemodialysis machine includes a dry powder cartridge for hemodialysis on-line. The dry powder barrel for hemodialysis on-line comprises a barrel body 1, a barrel cover 2 and a filtering device 3, wherein the barrel cover 2 is arranged at the top of the barrel body 1, a liquid outlet 11 is formed in the bottom of the barrel body 1, a liquid inlet 21 is formed in the barrel cover 2, and the filtering device 3 is arranged in the barrel body 1 and is close to the liquid outlet 11. The outer surface of the barrel body 1 is also provided with a plurality of ribs 13 for supporting the dry powder barrel and preventing the dry powder barrel from rolling. The barrel cover 2 is provided with a clamping groove 22, the top end of the barrel body 1 is provided with a flanging 14, and the flanging 14 is clamped in the clamping groove 22 in a sealing way.
The filter device 3 comprises a first filter element 4 and a second filter element 5 arranged along the axial direction of the tub 1, the second filter element 5 being located on the side of the first filter element 4 close to the liquid outlet 11.
The first filter element 4 and the second filter element 5 are disc-shaped, the outer periphery of the first filter element 4 and the outer periphery of the second filter element 5 are connected with the barrel body 1, the opening 44 of the first filter element 4 is arranged back to the liquid outlet 11, and the opening 54 of the second filter element 5 is arranged towards the liquid outlet 11.
The first filter 4 includes a first filter holder 40 and a first filter screen (not shown), the first filter holder 40 includes a first holder body 41, a first abutting portion 42 and a positioning portion 43, the first holder body 41 is in a grid shape, the first filter screen covers a side wall of the first holder body 41 away from the liquid outlet 11, and the first abutting portion 42 surrounds and is connected to a radial outer side of the first holder body 41. The inner peripheral wall of the barrel body 1 is provided with a first limiting protrusion 15, and the first abutting part 42 abuts against the first limiting protrusion 15 and is in limiting fit in the axial direction of the barrel body 1. The first abutment portion 42 is disposed obliquely with respect to the axial direction of the tub 1, and the first abutment portion 42 is gradually distant from the first bracket body portion 41 from one end connected to the first bracket body portion 41 to one end abutted with the first limit projection 15.
The second filter element 5 includes a second filter holder 50 and a second filter screen (not shown), the second filter holder 50 includes a second holder main body portion 51, a second abutting portion 52 and a mating portion 53, the second holder main body portion 51 is in a grid shape, the second filter screen covers a side wall of the second holder main body portion 51 away from the liquid outlet 11, and the second abutting portion 52 surrounds and is connected to a radial outer side of the second holder main body portion 51. The inner peripheral wall of the barrel body 1 is provided with a second limiting protrusion 16, and the second abutting part 52 abuts against the second limiting protrusion 16 and is in limiting fit in the axial direction of the barrel body 1. The second abutment portion 52 is disposed obliquely with respect to the axial direction of the tub 1, and the second abutment portion 52 is gradually distant from the second bracket main body portion 51 from one end connected to the second bracket main body portion 51 to one end abutted with the second stopper protrusion 16. The obliquely arranged first and second abutment portions 42, 52 are elastically deformable in the radial direction, so that rapid assembly is achieved while being prevented from being disengaged from the corresponding stopper projection.
The positioning portion 43 is disposed on one side of the first filter support 40 facing the second filter support 50, and the positioning portion 43 is disposed in the middle of the first filter 4, and one side of the second filter 5 facing the first filter 4 is provided with a mating portion 53, in this embodiment, the positioning portion 43 is a groove, the mating portion 53 is a protrusion, and the mating portion 53 is in plug-in mating with the positioning portion 43 along the axial direction of the barrel 1.
The second filter element 5 has a higher filtering accuracy than the first filter element 4, i.e. the second filter screen has a smaller filter aperture than the first filter screen, so that multiple filtering of the dialysis fluid is achieved.
The outer peripheral walls of the liquid inlet 21 and the liquid outlet 11 are respectively wrapped with an elastic sealing layer 6, preferably, the elastic sealing layer 6 is made of a flexible silica gel layer, the liquid inlet 21 and the liquid outlet 11 are cylindrical, and the thickness of the elastic sealing layer 6 is gradually reduced from one end close to the barrel 1 to one end far away from the barrel 1 along the axial direction of the barrel 1. A layer of flexible silica gel layer is stuck on the peripheral walls of the liquid inlet 21 and the liquid outlet 11, so that the elastic fitting degree of the liquid inlet 21, the liquid outlet 11 and the interface of the dialysis machine can be increased, the better compression and sealing effects are realized, and the equipment alarm fault caused by slight air leakage of the connecting port is avoided. In addition, the thickness of the elastic sealing layer 6 in the axial direction can compensate the dimensional deviation generated by processing the liquid inlet 21 and the liquid outlet 11 of the dry powder barrel, and leakage caused by dimensional interference during connection is avoided.
From the above, discoid three-dimensional filter element can effectively increase filtration area, and the filter element of slope can play certain cushioning effect to the impact of fluid simultaneously, and is less than conventional plane filter screen atress, is difficult for appearing the filter screen damage, blocks up the net or because of the phenomenon that the unsmooth bubble of liquid flow increases, adopts double-deck filter screen structure simultaneously, can realize the multiple filtration to the dislysate and the second filter piece of downside can carry out effectual support to the first filter piece of upside.
In addition, along the axial direction of the barrel body, the thickness of the elastic sealing layer can be unchanged, and a liquid inlet and/or a liquid outlet provided with the elastic sealing layer are in a round table shape, and along the axial direction of the barrel body, the outer diameter of the liquid inlet and/or the liquid outlet gradually decreases from one end close to the barrel body to one end far away from the barrel body. It is also possible to provide an elastic sealing layer on only one of the liquid inlet or the liquid outlet. The material, size and shape of the elastic sealing layer may also be varied as desired. The positioning part can also be a bulge, and the corresponding matching part is a groove. The shape, number, size, etc. of the positioning portions and the fitting portions may be changed as needed. The barrel cover and the barrel body can be fixedly connected in an ultrasonic welding mode. The above-described modifications can also achieve the object of the present utility model.
Finally, it should be emphasized that the foregoing is merely a preferred embodiment of the present utility model, and is not intended to limit the utility model, but rather that various changes and modifications can be made by those skilled in the art without departing from the spirit and principles of the utility model, and any modifications, equivalent substitutions, improvements, etc. are intended to be included within the scope of the present utility model.
Claims (10)
1. The dry powder barrel for hemodialysis on-line comprises a barrel body, a barrel cover and a filtering device, wherein the barrel cover is arranged at the top of the barrel body, a liquid outlet is formed in the bottom of the barrel body, a liquid inlet is formed in the barrel cover, and the filtering device is arranged in the barrel body and is close to the liquid outlet;
the method is characterized in that:
the filtering device comprises a first filtering piece and a second filtering piece which are arranged along the axial direction of the barrel body, and the second filtering piece is positioned at one side of the first filtering piece, which is close to the liquid outlet;
the first filter piece is in a disc shape, the outer periphery of the first filter piece is connected with the barrel body, and the opening of the first filter piece is arranged back to the liquid outlet.
2. The dry powder cartridge for hemodialysis on-line of claim 1, wherein:
the first filter piece comprises a first filter support and a first filter screen, the first filter support comprises a first support main body part and a first abutting part, the first support main body part is in a grid shape, the first filter screen covers the side wall of the first support main body part far away from the liquid outlet, and the first abutting part surrounds and is connected to the radial outer side of the first support main body part;
the inner peripheral wall of the barrel body is provided with a first limiting protrusion, and the first abutting part abuts against the first limiting protrusion and is in limiting fit in the axial direction of the barrel body.
3. The dry powder bucket for hemodialysis on-line of claim 2, wherein:
the second filter piece is in a disc shape, the outer periphery of the second filter piece is connected with the barrel body, and the opening of the second filter piece faces the liquid outlet.
4. A dry powder cartridge for hemodialysis on-line according to claim 3, wherein:
the second filter piece comprises a second filter support and a second filter screen, the second filter support comprises a second support main body part and a second abutting part, the second support main body part is in a grid shape, the second filter screen covers the side wall of the second support main body part far away from the liquid outlet, and the second abutting part surrounds and is connected to the radial outer side of the second support main body part;
the inner peripheral wall of the barrel body is provided with a second limiting protrusion, and the second abutting part abuts against the second limiting protrusion and is in limiting fit in the axial direction of the barrel body.
5. The dry powder cartridge for hemodialysis on-line of claim 4, wherein:
the first abutting part is obliquely arranged relative to the axial direction of the barrel body, and gradually is far away from the first bracket main body part from one end connected with the first bracket main body part to one end abutted with the first limiting protrusion; and/or
The second abutting part is obliquely arranged relative to the axial direction of the barrel body, and gradually is far away from the second bracket main body part from one end connected with the second bracket main body part to one end abutted with the second limiting protrusion.
6. The dry powder cartridge for hemodialysis on-line of any one of claims 1 to 5, wherein:
one side of the first filter element, which faces the second filter element, is also provided with a positioning part, and the positioning part is positioned in the middle of the first filter element;
one side of the second filter element, which faces the first filter element, is provided with a matching part, one of the positioning part and the matching part is a groove, the other one is a bulge, and the matching part is in plug-in matching with the positioning part along the axial direction of the barrel body.
7. The dry powder cartridge for hemodialysis on-line of any one of claims 1 to 5, wherein:
the second filter element has a higher filtration accuracy than the first filter element.
8. The dry powder cartridge for hemodialysis on-line of any one of claims 1 to 5, wherein:
and an elastic sealing layer is wrapped on the peripheral wall of at least one of the liquid inlet and the liquid outlet.
9. The dry powder cartridge for hemodialysis on-line of claim 8, wherein:
the liquid inlet and/or the liquid outlet provided with the elastic sealing layer are cylindrical, and the thickness of the elastic sealing layer is gradually reduced from one end close to the barrel to one end far away from the barrel along the axial direction of the barrel; or alternatively
The liquid inlet and/or the liquid outlet provided with the elastic sealing layer are/is in a round table shape, the liquid inlet and/or the liquid outlet gradually decrease in outer diameter from one end close to the barrel body to one end far away from the barrel body along the axial direction of the barrel body, and the thickness of the elastic sealing layer is unchanged.
10. Hemodialysis machine, characterized by comprising a dry powder cartridge for hemodialysis on-line according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223002163.2U CN219185199U (en) | 2022-11-04 | 2022-11-04 | Dry powder barrel for hemodialysis on-line and hemodialysis machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223002163.2U CN219185199U (en) | 2022-11-04 | 2022-11-04 | Dry powder barrel for hemodialysis on-line and hemodialysis machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219185199U true CN219185199U (en) | 2023-06-16 |
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ID=86713875
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223002163.2U Active CN219185199U (en) | 2022-11-04 | 2022-11-04 | Dry powder barrel for hemodialysis on-line and hemodialysis machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219185199U (en) |
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2022
- 2022-11-04 CN CN202223002163.2U patent/CN219185199U/en active Active
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