CN219185199U - Dry powder barrel for hemodialysis on-line and hemodialysis machine - Google Patents

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

On-line dry powder barrel and hemodialysis machine for hemodialysis

technical field

The utility model relates to the field of medical equipment, in particular to a hemodialysis on-line dry powder bucket and a hemodialysis machine.

Background technique

At present, the most commonly used dialysis treatment equipment includes a dialysis machine and a hemodialysis dry powder bucket connected to the dialysis machine. The hemodialysis concentrate is arranged inside the dry powder bucket, and is prepared with dialysis water through a dialysate supply system to form a qualified dialysate.

When the dry powder barrel is in use, the upper and lower ports are in pressure contact with the rubber sealing ring at the interface of the dialysis machine to achieve communication. However, in actual use, it often occurs that the dialysis machine alarms due to poor sealing of the interface. The reason for the poor sealing is that, on the one hand, there is a deviation in the port size of the dry powder barrel, which is prone to interference fit between the port of the dry powder barrel and the interface of the dialysis machine; Elastic, unable to form an effective elastic seal.

In addition, when the dry powder bucket is in use, some dialysis powder is prone to undissolved conditions, and the existing filter screen is usually a single-layer flat filter screen, which is easily deformed and damaged by force, and is also easy to be blocked to cause liquid If the flow is not smooth, there will be an increase in the number of bubbles.

Utility model content

The first purpose of the present utility model is to provide a hemodialysis on-line dry powder barrel that is not prone to damage to the filter screen, blockage of the screen, or increased bubbles due to poor liquid flow.

The second purpose of the utility model is to provide a hemodialysis machine with the above dry powder bucket.

In order to achieve the above first purpose, the utility model provides a dry powder barrel for on-line hemodialysis, including a barrel body, a barrel cover and a filter device, the barrel cover is arranged on the top of the barrel body, and the bottom of the barrel body is provided with a liquid outlet. The cover is provided with a liquid inlet, and the filter device is arranged in the barrel and is arranged close to the liquid outlet; the filter device includes a first filter element and a second filter element arranged along the axial direction of the barrel body, and the second filter element is located at the first The side of the filter element is close to the liquid outlet; the first filter element is disc-shaped, the outer periphery of the first filter element is connected with the barrel body, and the opening of the first filter element is arranged facing away from the liquid outlet.

It can be seen from the above scheme that the disc-shaped three-dimensional filter part can effectively increase the filter area, and the inclined filter part can buffer the impact of the fluid to a certain extent. Compared with the conventional flat filter, the force is smaller and the filter is not easy to appear. In case of damage, blockage or increased air bubbles due to poor liquid flow, the double-layer filter structure can achieve multiple filtrations of the dialysate and the second filter on the lower side can effectively filter the first filter on the upper side. support.

A preferred solution is that the first filter element includes a first filter holder and a first filter net, the first filter holder includes a first holder main body and a first abutment part, the first holder main body is in the shape of a grid, and the first The filter screen is covered on the side wall of the main body of the first bracket away from the liquid outlet, the first abutting portion surrounds and connects radially outside the main body of the first bracket; the inner peripheral wall of the barrel is provided with a first limiting protrusion The first abutting portion abuts against the first limiting protrusion and cooperates with the axial upper limit of the barrel body.

It can be seen that the first position-limiting protrusion and the second filter element can respectively cooperate with the first filter element in the axial direction of the barrel body, so as to realize stable position limitation of the first filter element.

A preferred solution is that the second filter element is disc-shaped, the outer periphery of the second filter element is connected to the barrel body, and the opening of the second filter element is set towards the liquid outlet.

It can be seen that the second filter element is arranged in a disk shape with its opening facing the liquid outlet, which can stably support the first filter element.

A further solution is that the second filter element includes a second filter holder and a second filter net, the second filter holder includes a second holder main body and a second abutment part, the second holder main body is in the shape of a grid, and the second filter The net is covered on the side wall of the second bracket main body away from the liquid outlet, and the second abutting portion surrounds and connects to the radially outer side of the second bracket main body; the inner peripheral wall of the barrel is provided with a second limiting protrusion , the second abutting portion abuts against the second limiting protrusion and cooperates with the axial upper limit of the barrel body.

It can be seen that the second position-limiting protrusion and the bottom wall of the barrel body can respectively cooperate with the second filter element in the axial direction of the barrel body, so as to achieve a stable position limit for the second filter element.

A further solution is that the first abutting portion is inclined relative to the axial direction of the barrel, and the first abutting portion gradually moves from the end connected to the main body of the first bracket to the end abutting the first stop protrusion. away from the main body of the first bracket; and/or the second abutting portion is inclined relative to the axial direction of the barrel, and the second abutting portion is from one end connected to the main body of the second bracket to abutting against the second limiting protrusion The connected end gradually moves away from the main body of the second bracket.

It can be seen that the obliquely arranged first abutting portion and the second abutting portion can be elastically deformed in the radial direction, so as to realize rapid assembly, and at the same time prevent disengagement from the corresponding limiting protrusion.

A preferred solution is that the side of the first filter element facing the second filter element is also provided with a positioning part, and the positioning part is located in the middle of the first filter element; the 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, and the other is a protrusion, and the matching part and the positioning part are inserted and fitted along the axial direction of the barrel.

It can be seen that through the insertion fit of the positioning part and the matching part, the position limitation of the first filter part relative to the second filter part can be further realized, and the first filter part can be prevented from turning over due to uneven force.

A preferred solution is that the filtration accuracy of the second filter element is higher than that of the first filter element.

It can be seen that the second filter element located on the lower side has a higher filtration precision, so that the filtration precision of the dialysate can be further improved.

A preferred solution is that the outer peripheral wall of at least one of the liquid inlet and the liquid outlet is wrapped with an elastic sealing layer.

It can be seen that pasting a layer of flexible silicone layer on the peripheral wall of the liquid inlet and/or the liquid outlet can increase the elastic fit between the liquid inlet, the liquid outlet and the interface of the dialysis machine, and achieve better compression And the sealing effect, to avoid equipment alarm failure caused by slight air leakage at the connection port.

A further solution is that the liquid inlet and/or the liquid outlet provided with the elastic sealing layer are cylindrical, and along the axial direction of the barrel, from the end close to the barrel to the end far away from the barrel, the thickness of the elastic sealing layer is gradually decrease; or the liquid inlet and/or liquid outlet provided with an elastic sealing layer are in the shape of a cone, along the axial direction of the barrel, from one end close to the barrel to the end far away from the barrel, the liquid inlet and /or the outer diameter of the liquid outlet gradually decreases, and the thickness of the elastic sealing layer remains unchanged.

It can be seen that the change in the thickness of the elastic sealing layer in the axial direction can compensate for the dimensional deviation caused by the processing of the liquid inlet and liquid outlet of the dry powder barrel, and avoid leakage caused by dimensional interference during connection.

In order to achieve the above-mentioned second purpose, the utility model provides a hemodialysis machine, including the above-mentioned dry powder bucket for on-line hemodialysis.

Description of drawings

Fig. 1 is a structural diagram of an embodiment of the dry powder bucket for on-line hemodialysis of the present invention.

Fig. 2 is a cross-sectional view of an embodiment of the on-line dry powder bucket for hemodialysis of the present invention.

Fig. 3 is a partial enlarged view of A in Fig. 2 .

Fig. 4 is a partial enlarged view of B in Fig. 2 .

Fig. 5 is a partial enlarged view of position C in Fig. 2 .

Below in conjunction with accompanying drawing and embodiment the utility model is described further.

Detailed ways

Referring to Fig. 1 to Fig. 5, the hemodialysis machine includes a dry powder bucket for on-line hemodialysis. The dry powder barrel for on-line hemodialysis includes a barrel body 1, a barrel cover 2 and a filter device 3, the barrel cover 2 is set on the top of the barrel body 1, the bottom of the barrel body 1 is provided with a liquid outlet 11, and the barrel cover 2 is provided with a liquid inlet port 21, the filter device 3 is set in the barrel body 1 and is set close to the liquid outlet 11. The outer surface of the bucket body 1 is also provided with several ribs 13 for supporting the dry powder bucket and preventing the dry powder bucket from rolling. The lid 2 is provided with a slot 22 , and the top of the barrel body 1 is provided with an outer flange 14 , and the outer flange 14 is sealed and engaged in the slot 22 .

The filter device 3 includes a first filter element 4 and a second filter element 5 arranged along the axial direction of the barrel body 1 , and the second filter element 5 is located on a side of the first filter element 4 close to the liquid outlet 11 .

Both the first filter element 4 and the second filter element 5 are disc-shaped, and the outer periphery of the first filter element 4 and the outer periphery of the second filter element 5 are all connected to the bucket body 1, and the opening 44 of the first filter element 4 is behind the It is arranged toward the liquid outlet 11 , while the opening 54 of the second filter element 5 is arranged toward the liquid outlet 11 .

The first filter element 4 includes a first filter holder 40 and a first filter screen (not shown), the first filter holder 40 includes a first holder body part 41, a first abutting part 42 and a positioning part 43, the first holder body The portion 41 is in the shape of a grid, the first filter mesh is covered on the side wall of the first bracket main body 41 away from the liquid outlet 11 , and the first abutting portion 42 surrounds and connects radially outside of the first bracket main body 41 . A first limiting protrusion 15 is provided on the inner peripheral wall of the barrel body 1 , and the first abutting portion 42 abuts against the first limiting protrusion 15 and cooperates with the axial upper limit of the barrel body 1 . The first abutting portion 42 is arranged obliquely with respect to the axial direction of the barrel body 1 , and the first abutting portion 42 extends from one end connected to the first bracket main body 41 to the end abutting the first stop protrusion 15 , gradually move away from the first bracket body part 41 .

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 part 51, a second abutting part 52 and a matching part 53, the second holder main body The portion 51 is in the shape of a grid, the second filter mesh covers the side wall of the second support main body 51 away from the liquid outlet 11 , and the second abutting portion 52 surrounds and connects radially outside of the second support main body 51 . A second limiting protrusion 16 is provided on the inner peripheral wall of the barrel body 1 , and the second abutting portion 52 abuts against the second limiting protrusion 16 and cooperates with the axial upper limit of the barrel body 1 . The second abutting portion 52 is arranged obliquely with respect to the axial direction of the barrel body 1 , and the second abutting portion 52 extends from one end connected to the second bracket main body 51 to the end abutting against the second limiting protrusion 16 , gradually move away from the second bracket body part 51 . The obliquely arranged first abutting portion 42 and the second abutting portion 52 can be elastically deformed in the radial direction, so as to realize fast assembly, and at the same time prevent disengagement from the corresponding limiting protrusion.

The positioning part 43 is arranged on the side of the first filter holder 40 facing the second filter holder 50, and the positioning part 43 is located in the middle of the first filter part 4, and the side of the second filter part 5 facing the first filter part 4 is provided with a fitting part 53 , in this embodiment, the positioning part 43 is a groove, and the matching part 53 is a protrusion, and the matching part 53 and the positioning part 43 are inserted and fitted along the axial direction of the barrel body 1 .

The filtration accuracy of the second filter element 5 is higher than that of the first filter element 4 , that is, the filter aperture of the second filter screen is smaller than that of the first filter screen, thereby realizing multiple filtration of the dialysate.

The outer peripheral walls of the liquid inlet 21 and the liquid outlet 11 are all wrapped with an elastic sealing layer 6. Preferably, the elastic sealing layer 6 adopts a flexible silicone layer, and the liquid inlet 21 and the liquid outlet 11 are cylindrical. In the axial direction of 1, the thickness of the elastic sealing layer 6 decreases gradually from the end close to the barrel body 1 to the end far away from the barrel body 1. Paste a layer of flexible silicone on the peripheral wall of the liquid inlet 21 and the liquid outlet 11, which can increase the elastic fit between the liquid inlet 21, the liquid outlet 11 and the interface of the dialysis machine, and achieve better compression and sealing The effect is to avoid equipment alarm failure caused by slight air leakage at the connection port. In addition, the change in the thickness of the elastic sealing layer 6 in the axial direction can compensate for the dimensional deviation caused by the processing of the liquid inlet 21 and the liquid outlet 11 of the dry powder barrel, and avoid leakage caused by dimensional interference during connection.

It can be seen from the above that the disc-shaped three-dimensional filter part can effectively increase the filter area, and the inclined filter part can buffer the impact of the fluid to a certain extent. Compared with the conventional flat filter, the force is smaller and the filter is less likely to be damaged. , blockage or increased air bubbles due to poor liquid flow, at the same time, the double-layer filter structure can realize multiple filtration of dialysate and the second filter on the lower side can effectively filter the first filter on the upper side. support.

In addition, along the axial direction of the barrel, the thickness of the elastic sealing layer can also be unchanged, and the liquid inlet and/or liquid outlet provided with the elastic sealing layer are in the shape of a cone, and along the axial direction of the barrel, they are close to each other. From one end of the barrel to the end away from the barrel, the outer diameter of the liquid inlet and/or the liquid outlet gradually decreases. It is also possible to arrange an elastic sealing layer only on one of the liquid inlet or the liquid outlet. The material, size and shape of the elastic sealing layer can also be varied as desired. The positioning part can also be a protrusion, and correspondingly, the matching part can be a groove. The shape, quantity and size of the positioning portion and the matching portion can be changed as required. The bung can also be fixedly connected by ultrasonic welding between the bung and the bung. Above-mentioned change also can realize the purpose of the utility model.

Finally, it should be emphasized that the above are only preferred embodiments of the utility model, and are not intended to limit the utility model. For those skilled in the art, the utility model can have various changes and modifications. Within the spirit and principles of the invention, any modifications, equivalent replacements, improvements, etc., shall be included in the scope of protection of the present utility model.

Claims (10)

1. The dry powder barrel for on-line hemodialysis, including a barrel body, a barrel cover and a filter device, the barrel cover is arranged on the top of the barrel body, the bottom of the barrel body is provided with a liquid outlet, and the barrel cover is provided with There is a liquid inlet, and the filtering device is arranged in the barrel and is arranged close to the liquid outlet; It is characterized by: The filter device includes a first filter element and a second filter element arranged along the axial direction of the barrel, and the second filter element is located on a side of the first filter element close to the liquid outlet; The first filter element is disc-shaped, the outer periphery of the first filter element is connected to the barrel, and the opening of the first filter element is set away from the liquid outlet. 2. The online dry powder barrel for hemodialysis according to claim 1, characterized in that: The first filter element includes a first filter holder and a first filter net, the first filter holder includes a first holder body part and a first abutment part, the first holder body part is in the shape of a grid, the The first filter mesh is covered on the side wall of the first bracket main body away from the liquid outlet, and the first abutting portion surrounds and connects radially outside the first bracket main body; A first limiting protrusion is provided on the inner peripheral wall of the barrel body, and the first abutting portion abuts against the first limiting protrusion and cooperates with the axial upper limit of the barrel body. 3. The online dry powder barrel for hemodialysis according to claim 2, characterized in that: The second filter element is disc-shaped, the outer periphery of the second filter element is connected to the barrel body, and the opening of the second filter element is arranged toward the liquid outlet. 4. The online dry powder barrel for hemodialysis according to claim 3, characterized in that: The second filter element includes a second filter holder and a second filter net, the second filter holder includes a second holder main body and a second abutment part, the second holder main body is in the shape of a grid, the The second filter screen is covered on the side wall of the second bracket main body away from the liquid outlet, and the second abutting portion surrounds and is connected to the radial outside of the second bracket main body; A second limiting protrusion is provided on the inner peripheral wall of the barrel, and the second abutting portion abuts against the second limiting protrusion and cooperates with the axial upper limit of the barrel. 5. The online dry powder barrel for hemodialysis according to claim 4, characterized in that: The first abutting portion is arranged obliquely relative to the axial direction of the barrel, and the first abutting portion is from one end connected to the main body of the first bracket to abutting against the first limiting protrusion. one end connected, gradually away from the first bracket main body; and/or The second abutting portion is arranged obliquely relative to the axial direction of the barrel, and the second abutting portion is from one end connected to the main body of the second bracket to abutting against the second limiting protrusion. The connected end gradually moves away from the second bracket main body. 6. The online dry powder bucket for hemodialysis according to any one of claims 1 to 5, characterized in that: The side of the first filter element facing the second filter element is also provided with a positioning part, and the positioning part is located in the middle of the first filter element; The side of the second filter element facing the first filter element is provided with a matching portion, one of the positioning portion and the matching portion is a groove, and the other is a protrusion, and the matching portion and the positioning portion part along the axial direction of the barrel body. 7. The online dry powder bucket for hemodialysis according to any one of claims 1 to 5, characterized in that: The filtration accuracy of the second filter element is higher than that of the first filter element. 8. The online dry powder bucket for hemodialysis according to any one of claims 1 to 5, characterized in that: The outer peripheral wall of at least one of the liquid inlet and the liquid outlet is wrapped with an elastic sealing layer. 9. The online dry powder bucket for hemodialysis according to claim 8, characterized in that: The liquid inlet and/or the liquid outlet provided with the elastic sealing layer are cylindrical, along the axial direction of the barrel, from an end close to the barrel to an end far away from the barrel, the the thickness of the elastomeric seal gradually decreases; or The liquid inlet and/or the liquid outlet provided with the elastic sealing layer are in the shape of a cone, along the axial direction of the barrel, from the end close to the barrel to the end far away from the barrel. The outer diameter of the liquid port and/or the liquid outlet gradually decreases, and the thickness of the elastic sealing layer remains constant. 10. The hemodialysis machine, characterized in that it comprises the on-line dry powder bucket for hemodialysis according to any one of claims 1 to 9.

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