Screening device for hemodialysis dry powder

Abstract

The invention provides a hemodialysis dry powder screening device which comprises a shell, a feeding hopper is arranged on the shell, a feeding pipe extending into the shell is arranged at the bottom of the feeding hopper, a liquid outlet valve is arranged at the bottom of the shell, a mounting ring is arranged on the feeding pipe, a mounting frame is arranged on the mounting ring, and a driving mechanism for driving the mounting ring to rotate is arranged on the shell. A supporting cylinder is rotatably arranged on the mounting frame, a screening assembly is arranged at the bottom of the supporting cylinder, the feeding pipe extends into the screening assembly, a first transmission mechanism connected with the supporting cylinder is arranged on the shell, and a crushing mechanism located on the screening assembly is arranged in the supporting cylinder. According to the device, dry powder can be screened, in the screening process, dry powder cakes which are not screened out move into the supporting cylinder, the cakes in the supporting cylinder are crushed through the crushing mechanism, the situation that too many cakes are screened out, and consequently waste of the dry powder is increased can be effectively avoided, and the utilization rate of the dry powder is increased.

Description

Technical Field

[0001] The invention specifically relates to a screening device for hemodialysis dry powder. Background Art

[0002] Dialysis dry powder is a new type of dialysis material. Compared with traditional dialysis fluid, it is more convenient and efficient to use. The main components of dialysis dry powder are electrolytes and acid-base buffers required for dialysis. These components are similar to those in dialysis fluid, but are more convenient to carry and store during use. When using dialysis dry powder, it needs to be dissolved in an appropriate amount of water, and then contact with blood to remove metabolic waste and toxins in the blood through diffusion and convection, thereby achieving the purpose of purifying the blood.

[0003] In the mixing process of powdered raw materials, the transportation and storage of raw materials may cause the powdered raw materials to agglomerate, and a screening device is needed to screen them. For example, Chinese patent publication number CN222152774U provides a screening device for hemodialysis dry powder. A screening auxiliary component is arranged inside the barrel body, and the agglomerated materials in the hemodialysis dry powder are screened by the screening auxiliary component. The use process of the device will not be affected by the accumulation of agglomerated materials causing the conical screening net to be blocked, which meets the actual use needs.

[0004] However, the existing dry powder screening device for hemodialysis is not convenient for breaking up the agglomerated dry powder during the screening process, which causes the agglomerated dry powder to be easily screened out and causes a lot of dry powder waste. Therefore, a screening device for hemodialysis dry powder is proposed to solve the above technical problems. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention proposes a screening device for hemodialysis dry powder to solve the technical problem raised in the above background technology that the existing dry powder screening device for hemodialysis is not convenient for breaking up agglomerated dry powder during the screening process, thereby causing the agglomerated dry powder to be easily screened out and resulting in a large amount of dry powder waste.

[0006] To achieve the above object, the present invention provides the following technical solution: a screening device for hemodialysis dry powder, comprising:

[0007] The shell is provided with a feed hopper, a feed pipe extending to the interior of the shell is provided at the bottom of the feed hopper, and a liquid outlet valve is provided at the bottom of the shell;

[0008] A mounting ring is rotatably sleeved on the feed pipe and is provided with a mounting frame, and a driving mechanism for driving the mounting ring to rotate is provided on the housing;

[0009] The support cylinder is rotatably arranged at the top on the mounting frame, and a screening assembly is arranged at the bottom, and the feeding pipe extends into the screening assembly;

[0010] The first transmission mechanism is arranged on the housing and connected to the support cylinder to convert the rotation of the mounting ring into driving the support cylinder to rotate reciprocally; and

[0011] The crushing mechanism is arranged in the support cylinder and on the screening assembly to crush the dry powder lumps that are not screened out.

[0012] Furthermore, the driving mechanism includes:

[0013] The driving motor is fixedly arranged on the housing, and a first gear is arranged on the output shaft of the driving motor; and

[0014] The second gear is arranged on the outer circumferential surface of the mounting ring and meshes with the first gear.

[0015] Furthermore, the screening assembly includes a mounting frame, which is in an inverted conical shape. The bottom of the support cylinder is fixedly connected to the center of the mounting frame. Multiple groups of screening meshes are arranged on the mounting frame, and the feeding pipe is located at the center of the housing and extends into the mounting frame.

[0016] Furthermore, the first transmission mechanism includes:

[0017] The transmission shaft is rotatably arranged on the mounting frame along its axis

[0018] The linkage assembly is arranged on the mounting frame and connected to the housing and the transmission shaft to convert the movement of the mounting frame into driving the transmission shaft to rotate; and

[0019] The control assembly is arranged on the transmission shaft and connected to the support cylinder to convert the rotation of the transmission shaft into driving the support cylinder to rotate reciprocally.

[0020] Furthermore, the linkage assembly includes:

[0021] The third gear is rotatably arranged on the mounting frame along its axis;

[0022] The gear ring is arranged on the inner wall of the housing and meshes with the third gear; and

[0023] The first belt transmission mechanism is arranged on the third gear and connected to the transmission shaft.

[0024] Furthermore, the control assembly includes:

[0025] The receiving rod is arranged on the support cylinder, and its end is connected to the mounting frame through a tension spring; and

[0026] The shifting rods are provided in multiple groups and are arranged in a circumferential direction on the transmission shaft and can abut against the side surfaces of the receiving rods.

[0027] Furthermore, the crushing mechanism comprises:

[0028] A central shaft is rotatably disposed in the support cylinder along its axis;

[0029] A spiral cutting blade is arranged at the bottom of the central shaft. A plurality of through grooves are circumferentially formed at the bottom of the support tube. The spiral cutting blade is arranged in the through grooves and fits the inner wall of the support tube; and

[0030] A second belt transmission mechanism is arranged on the transmission shaft and connected to the central shaft.

[0031] Furthermore, the bottom of the central shaft extends out of the installation frame and is connected to an extension shaft, and an agitator is provided at the end of the extension shaft.

[0032] Furthermore, the feed pipe is provided with a vibration mechanism connected to the support cylinder, and the movement of the support cylinder is converted into driving the screening assembly to vibrate through the vibration mechanism.

[0033] Furthermore, the vibration mechanism includes:

[0034] A limiting ring is arranged at the end of the supporting tube, and an elastic member is arranged between the limiting ring and the mounting frame;

[0035] A first mounting plate is disposed on the feed pipe, and has a plurality of convex ridges arranged circumferentially on one side thereof; and

[0036] The second mounting plate is disposed on the supporting tube, and has a plurality of groups of protrusions arranged in an annular direction on the side opposite to the first mounting plate, wherein the protrusions can abut against the convex edges.

[0037] Compared with the prior art, the present invention has the following beneficial effects:

[0038] When the device is in use, liquid is injected into the housing, and dry powder is put into the feed hopper. The dry powder falls into the screening assembly through the feed hopper. The driving mechanism drives the installation ring to rotate. During the rotation of the installation ring, the screening assembly is driven to revolve so that the screening assembly revolves, so as to evenly put the screened dry powder on the liquid surface and avoid the reduction of the melting speed caused by concentrated feeding, improve the melting rate of the dry powder, and the rotation of the installation ring can be converted into the reciprocating rotation of the driving support cylinder through the first transmission mechanism to drive the screening assembly to reciprocate, so as to realize the screening of the dry powder. During the screening process, the un-screened dry powder agglomerates and moves to the support cylinder, and the agglomerates in the support cylinder are broken by the crushing mechanism, which can effectively avoid the increase of dry powder waste caused by excessive agglomerates being screened out and improve the utilization rate of the dry powder. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the specific embodiments of the present invention, the drawings required for the specific embodiments will be briefly introduced below. In all the drawings, the components or parts are not necessarily drawn to actual scale.

[0040] Figure 1 It is a cross-sectional view of a screening device for hemodialysis dry powder provided by the present invention;

[0041] Figure 2 It is a schematic internal structure diagram of a screening device for hemodialysis dry powder of the present invention;

[0042] Figure 3 is Figure 2 an enlarged schematic view of area A in

[0043] Figure 4 It is a three-dimensional structure diagram of the internal parts of a screening device for hemodialysis dry powder of the present invention;

[0044] Figure 5 is Figure 4 an enlarged schematic view of area B in

[0045] Figure 6 It is a schematic internal view of the housing in a screening device for hemodialysis dry powder of the present invention;

[0046] Reference numerals:

[0047] 1. Housing; 11. Liquid outlet valve; 12. Feed hopper; 13. Feeding pipe; 14. First mounting plate; 15. Convex rib; 16. Tooth ring;

[0048] 2. Installation ring; 21. Installation frame; 22. Second gear; 23. Driving motor; 24. First gear;

[0049] 3. Support cylinder; 31. Mounting frame; 32. Screening net; 33. Limiting ring; 34. Elastic member; 35. Second mounting plate; 36. Protrusion; 37. Through slot; 38. Receiving rod; 39. Tension spring;

[0050] 4. Central axis; 41. Spiral cutting blade; 42. Extension axis; 43. Agitator;

[0051] 5. The third gear; 51. The transmission shaft; 52. The lever. DETAILED DESCRIPTION

[0052] The present invention is further described in detail below in conjunction with the accompanying drawings. It is necessary to point out here that the following specific implementation methods are only used to further illustrate the present invention and cannot be understood as limiting the scope of protection of the present invention. Technicians in this field can make some non-essential improvements and adjustments to the present invention based on the above application content.

[0053] Example:

[0054] like Figure 1 , 4 As shown, the present invention provides a screening device for hemodialysis dry powder, including a shell 1, a feed hopper 12 is arranged on the shell 1, a feed pipe 13 extending into the shell 1 is arranged at the bottom of the feed hopper 12, a liquid outlet valve 11 is arranged at the bottom of the shell 1, a mounting ring 2 is sleeved on the feed pipe 13, a mounting frame 21 is arranged on the mounting ring 2, a driving mechanism for driving the mounting ring 2 to rotate is arranged on the shell 1, the driving mechanism includes a driving motor 23 arranged on the shell 1, a first gear 24 is arranged on the output shaft of the driving motor 23, and a second gear 22 meshing with the first gear 24 is arranged on the outer circumferential surface of the mounting ring 2.

[0055] When the device is in use, liquid can be injected into the housing 1, and dry powder can be put into the housing 1 through the feed hopper 12. The first gear 24 can be driven to rotate by controlling the drive motor 23 to start. During the rotation process, the first gear 24 drives the mounting ring 2 to rotate on the feed pipe 13 through meshing with the second gear 22, so as to drive the mounting frame 21 to swing in the housing 1.

[0056] like Figure 1 , 3 As shown, in this embodiment, a rotatable support cylinder 3 is provided on the mounting frame 21, a screening assembly is provided at the bottom of the support cylinder 3, a feed pipe 13 extends into the screening assembly, the screening assembly includes an inverted cone-shaped mounting frame 31, the bottom of the support cylinder 3 is fixedly connected to the center of the mounting frame 31, a plurality of groups of screening nets 32 are provided on the mounting frame 31, and the feed pipe 13 is located at the center of the shell 1 and extends into the mounting frame 31.

[0057] The mounting frame 21 drives the support cylinder 3 to move during the rotation. During the movement of the support cylinder 3, the feed pipe 13 is always located in the mounting frame 31 to ensure that the agglomerated dry powder will not fall directly into the liquid during the movement of the mounting frame 31, and the dry powder is screened by the screening net 32 ​​to increase the dissolution rate of the dry powder.

[0058] like Figures 2 to 4 As shown, in this embodiment, the housing 1 is provided with a first transmission mechanism connected with the support cylinder 3, and the rotation of the mounting ring 2 is converted into reciprocating rotation of the support cylinder 3 through the first transmission mechanism. The first transmission mechanism includes a transmission shaft 51 rotatably arranged on the mounting frame 21 along its axis, and the mounting frame 21 is provided with a linkage assembly, which is connected with the housing 1 and the transmission shaft 51 to convert the movement of the mounting frame 21 into rotation of the driving transmission shaft 51, and the linkage assembly includes a third gear 5 rotatably arranged on the mounting frame 21, and the inner wall of the housing 1 is provided with a gear ring 16, which meshes with the third gear 5, and the third gear 5 is connected with the transmission shaft 51 through a first belt transmission mechanism.

[0059] The mounting ring 2 drives the mounting frame 21 to rotate during the rotation process. The mounting frame 21 drives the third gear 5 to rotate by meshing with the ring gear 16 during the rotation process. The third gear 5 drives the transmission shaft 51 to rotate through the first belt transmission mechanism during the rotation process. The transmission shaft 51 is provided with a control component connected to the support cylinder 3. The control component converts the rotation of the transmission shaft 51 into driving the support cylinder 3 to reciprocate. The control component includes a receiving rod 38 provided on the support cylinder 3. The end of the receiving rod 38 is connected to the mounting frame 21 through a tension spring 39. A plurality of shifting rods 52 are arranged circumferentially on the transmission shaft 51. The shifting rods 52 can abut against the side of the receiving rod 38.

[0060] During the rotation, the transmission shaft 51 drives multiple groups of levers 52 to swing. During the movement, the levers 52 drive the support tube 3 to rotate and stretch the tension spring 39 by abutting against the receiving rod 38. When the levers 52 are separated from the receiving rod 38, the support tube 3 is reset under the reset of the tension spring 39, thereby controlling the reciprocating motion of the screening net 32 ​​to improve the screening effect, and transporting the agglomerated dry powder to the center position of the installation frame 31 for subsequent processing.

[0061] like Figure 1 , 4As shown in Figures 5 and 6, in this embodiment, a crushing mechanism is provided in the support tube 3, and the crushing mechanism is located on the screening assembly, and the unscreened dry powder agglomerates are crushed by the crushing mechanism. The crushing mechanism includes a central shaft 4 which is rotatable and liftable along its axis and is provided in the support tube 3, a spiral cutter 41 is provided at the bottom of the central shaft 4, a plurality of groups of through grooves 37 are provided in the circumferential direction at the bottom of the support tube 3, the spiral cutter 41 is provided in the through grooves 37 and fits the inner wall of the support tube 3, and the transmission shaft 51 is connected to the central shaft 4 through a second belt transmission mechanism.

[0062] The agglomerated dry powder falls into the through groove 37 and contacts the spiral cutting knife 41. When the transmission shaft 51 rotates under the control of the aforementioned mechanism, the central shaft 4 is driven to rotate through the second belt transmission mechanism. During the rotation of the central shaft 4, the spiral cutting knife 41 is driven to rotate. During the rotation, the spiral cutting knife 41 breaks up the agglomerates of dry powder through relative movement with the through groove 37 to avoid excessive agglomerations being filtered out, thereby reducing the waste of raw materials.

[0063] like Figure 2 As shown, in this embodiment, the bottom of the central shaft 4 extends out of the mounting frame 31 and is connected to an extension shaft 42, and an agitator 43 is provided at the end of the extension shaft 42. The central shaft 4 can also drive the agitator 43 to move during continuous rotation, so that the dry powder can be quickly dissolved to further improve the liquid preparation efficiency, so that there is no need to perform separate mixing work when preparing the liquid, and the screening, dissolution and mixing of the dry powder can be carried out simultaneously, which greatly saves medical time.

[0064] like Figure 2 , 4 As shown in Figures 6 and 7, in this embodiment, a vibration mechanism connected to the support tube 3 is provided on the feed tube 13, and the movement of the support tube 3 is converted into the vibration of the driving screening assembly through the vibration mechanism. The vibration mechanism includes a limit ring 33 at the end of the support tube 3, and an elastic member 34 is provided between the limit ring 33 and the mounting frame 21. A first mounting plate 14 is provided on the feed tube 13, and a plurality of groups of convex ridges 15 are arranged circumferentially on one side of the first mounting plate 14. A second mounting plate 35 is provided on the support tube 3, and a plurality of groups of protrusions 36 are arranged circumferentially on the opposite side of the second mounting plate 35 and the first mounting plate 14, and the protrusions 36 can abut against the protrusions 15.

[0065] During the revolution and swing of the support cylinder 3, the abutment between the protrusion 36 and the ridge 15 drives the support cylinder 3 to move slightly along its axis, and the elastic member 34 controls the support cylinder 3 to reset, thereby causing the screening net 32 ​​to vibrate, so as to avoid blockage of the screening net 32 ​​and improve the screening efficiency.

[0066] Specific usage and beneficial effects of the present invention:

[0067] When the device is in use, liquid is injected into the shell 1, and dry powder is put into the feed hopper 12. The dry powder falls into the screening assembly through the feed hopper 12, and the driving mechanism drives the mounting ring 2 to rotate. During the rotation of the mounting ring 2, the screening assembly is driven to revolve so that the screening assembly revolves, so that the screened dry powder is evenly put into the liquid surface, and the concentrated delivery is avoided to reduce the dissolution rate, thereby improving the dissolution rate of the dry powder. The rotation of the mounting ring 2 can be converted into a reciprocating rotation drive of the support cylinder 3 through the first transmission mechanism to drive the screening assembly to reciprocate, thereby realizing the screening of the dry powder. In the screening process, the unscreened dry powder agglomerates move to the support cylinder 3, and the central shaft 4 is controlled to rotate by the second transmission mechanism to make the spiral cutting knife 41 move. The agglomerates in the support cylinder 3 are broken by the cooperation of the spiral cutting knife 41 and the through groove 37, which can effectively avoid excessive agglomerates being screened out, resulting in increased waste of dry powder, thereby improving the utilization rate of the dry powder.

[0068] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments. On the basis of the present invention, some modifications or improvements can be made thereto, which is obvious to those skilled in the art. Therefore, these modifications or improvements made on the basis of not departing from the spirit of the present invention all belong to the scope of protection claimed by the present invention.

Claims

1. A screening device for hemodialysis dry powder, characterized in that: Included are: The shell (1) is provided with a feed hopper (12), the bottom of the feed hopper (12) is provided with a feed pipe (13) extending into the interior of the shell (1), and the bottom of the shell (1) is provided with a liquid outlet valve (11); A mounting ring (2) is rotatably sleeved on the feed pipe (13) and is provided with a mounting frame (21); and a driving mechanism for driving the mounting ring (2) to rotate is provided on the housing (1); A support cylinder (3) having a top rotatably disposed on the mounting frame (21), a screening assembly disposed at the bottom, and the feed pipe (13) extending into the screening assembly; A first transmission mechanism, arranged on the housing (1) and connected to the support tube (3), so as to convert the rotation of the mounting ring (2) into driving the support tube (3) to reciprocate; and A crushing mechanism is arranged in the support cylinder (3) and located on the screening assembly to crush the unscreened dry powder agglomerates.

2. A hemodialysis dry powder screening device according to claim 1, characterized in that: The driving mechanism comprises: A driving motor (23) is fixedly mounted on the housing (1), and a first gear (24) is mounted on an output shaft of the driving motor (23); and The second gear (22) is arranged on the outer circumferential surface of the mounting ring (2) and meshes with the first gear (24).

3. A hemodialysis dry powder screening device according to claim 1, characterized in that: The screening assembly comprises a mounting frame (31) in an inverted cone shape. The bottom of the support cylinder (3) is fixedly connected to the center of the mounting frame (31). A plurality of groups of screening nets (32) are arranged on the mounting frame (31). The feed pipe (13) is located at the center of the shell (1) and extends into the mounting frame (31).

4. A hemodialysis dry powder screening device according to claim 3, characterized in that: The first transmission mechanism comprises: A transmission shaft (51) is rotatably arranged on the mounting frame (21) along its axis. A linkage assembly, arranged on the mounting frame (21) and connected to the housing (1) and the transmission shaft (51), so as to convert the movement of the mounting frame (21) into driving the transmission shaft (51) to rotate; and A control component is arranged on the transmission shaft (51) and connected to the support cylinder (3) to convert the rotation of the transmission shaft (51) into driving the support cylinder (3) to reciprocate.

5. A hemodialysis dry powder screening device according to claim 4, characterized in that: The linkage components include: A third gear (5) is rotatably arranged on the mounting frame (21) along its axis; a gear ring (16), arranged on the inner wall of the housing (1) and meshing with the third gear (5); and A first belt transmission mechanism is arranged on the third gear (5) and connected to the transmission shaft (51).

6. A hemodialysis dry powder screening device according to claim 4, characterized in that: The control component includes: A receiving rod (38) is arranged on the supporting tube (3), and an end portion of the receiving rod is connected to the mounting frame (21) via a tension spring (39); and The shifting rods (52) are provided in multiple groups and are arranged in a circumferential direction on the transmission shaft (51) and can abut against the side surface of the receiving rod (38).

7. A hemodialysis dry powder screening device according to claim 4, characterized in that: The crushing mechanism comprises: A central shaft (4) is rotatably arranged in the support cylinder (3) along its axis; A spiral cutting blade (41) is arranged at the bottom of the central shaft (4); a plurality of through grooves (37) are circumferentially formed at the bottom of the support tube (3); the spiral cutting blade (41) is arranged in the through grooves (37) and is in contact with the inner wall of the support tube (3); and A second belt transmission mechanism is arranged on the transmission shaft (51) and connected to the central shaft (4).

8. A hemodialysis dry powder screening device according to claim 7, characterized in that: The bottom of the central shaft (4) extends out of the installation frame (31) and is connected to an extension shaft (42), and a stirrer (43) is provided at the end of the extension shaft (42).

9. A hemodialysis dry powder screening device according to claim 1, characterized in that: The feed pipe (13) is provided with a vibration mechanism connected to the support cylinder (3), and the movement of the support cylinder (3) is converted into driving the screening assembly to vibrate through the vibration mechanism.

10. A hemodialysis dry powder screening device according to claim 9, characterized in that: The vibration mechanism comprises: A limiting ring (33) is arranged at the end of the supporting tube (3), and an elastic member (34) is arranged between the limiting ring (33) and the mounting frame (21); A first mounting plate (14) is disposed on the feed pipe (13) and has a plurality of groups of ridges (15) arranged circumferentially on one side thereof; and The second mounting plate (35) is arranged on the supporting tube (3), and has a plurality of groups of protrusions (36) arranged in an annular direction on the side opposite to the first mounting plate (14), wherein the protrusions (36) can abut against the convex ridges (15).

Images