A dialysis dry powder filling device

Abstract

This utility model discloses a dialysis dry powder filling device, comprising: a storage mechanism, the storage mechanism including a cylinder for storing the dry powder to be filled, a feed hopper for replenishing the dry powder into the cylinder at the top of the cylinder, and a discharge pipe for discharging the dry powder from the cylinder at the bottom of the cylinder; and a screw metering mechanism, disposed on the cylinder, for quantitatively pushing the dry powder out of the discharge pipe. This utility model, by adding a connecting pipe at the discharge pipe and installing a piston and a driving component for moving the piston up and down inside the connecting pipe, allows the piston to be driven out of the connecting pipe during normal discharge, enabling the dry powder to be discharged normally into the filling container. After filling, the piston is driven back into the connecting pipe by the driving component, sealing the connecting pipe and preventing the dry powder remaining on the inner wall of the connecting pipe from being discharged under gravity or vibration, thereby reducing powder leakage from the discharge port.

Description

Technical Field

[0001] This utility model relates to the field of hemodialysis dry powder production technology, and in particular to a dialysis dry powder filling device. Background Technology

[0002] The statements herein provide only background information related to this invention and do not necessarily constitute prior art.

[0003] During the production and processing of hemodialysis dry powder, the prepared dry powder needs to be poured into filling barrels in multiple batches. The current filling method is generally to store the dry powder in a tank and discharge a certain amount of dry powder into the filling barrels through a screw metering device.

[0004] Because dry powder tends to adhere to and remain on the inner wall of the outlet during the filling process, after filling is completed, this adhered dry powder will fall off under the influence of gravity or vibration, resulting in powder leakage. The leaked dialysis dry powder cannot be effectively utilized, causing waste of raw materials. In addition, the leaked powder will scatter around the equipment and on the conveyor belt, increasing the difficulty and workload of cleaning the equipment. Utility Model Content

[0005] The purpose of this invention is to address the aforementioned shortcomings by providing a dialysis dry powder filling device that reduces powder leakage from the discharge port.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a dialysis dry powder filling device, comprising:

[0007] A storage mechanism, the storage mechanism including a cylinder for storing dry powder to be filled, a feed hopper for replenishing the dry powder into the cylinder at the top of the cylinder, and a discharge pipe for discharging the dry powder from the cylinder at the bottom of the cylinder.

[0008] The screw metering mechanism, installed on the cylinder, is used to quantitatively push dry powder out of the discharge pipe;

[0009] A lifting mechanism, which is connected to the cylinder, is used to drive the cylinder to move up and down;

[0010] A blocking mechanism includes a connecting pipe disposed at the bottom end of the discharge pipe and connected to the discharge pipe, a cover plate for sealing the opening of the filling barrel is provided on the connecting pipe, and a piston that dynamically seals with the connecting pipe and a driving component for driving the piston in and out of the connecting pipe are movably disposed inside the connecting pipe.

[0011] Furthermore, the screw metering mechanism includes a screw rotatably disposed inside the cylinder and one end inserted into the discharge pipe, and a drive motor for driving the screw to rotate.

[0012] Furthermore, a collar is fixedly provided on the discharge pipe, and a first compression spring is provided between the collar and the connecting pipe. When the first compression spring is in its natural state, the bottom end of the discharge pipe is inserted into the connecting pipe.

[0013] Furthermore, the driving component includes a vertical rod disposed on the top of the piston, a guide block disposed on the vertical rod and inserted into a connecting pipe, a guide groove disposed in the connecting pipe for the guide block to move up and down, a second compression spring disposed at the bottom of the guide block and located in the guide groove, the piston being located in the connecting pipe when the second compression spring is in its natural state, the driving component also includes a plurality of first wedge blocks disposed on the top of the vertical rod and a second wedge block disposed on the bottom of the screw, the second wedge block being used to push the first wedge blocks downward when rotating.

[0014] Furthermore, the guide block is provided with a baffle to prevent dry powder from entering the guide groove.

[0015] Furthermore, the piston is frustum-shaped, and the diameter of the top end of the piston is smaller than the diameter of the bottom end, which is used to guide the dry powder above the piston to slide down.

[0016] The beneficial effects of this utility model are reflected in:

[0017] This invention adds a connecting pipe to the discharge pipe and installs a piston and a driving component inside the connecting pipe to move the piston up and down. When the discharge pipe is discharging normally, the driving component can drive the piston out of the connecting pipe, allowing the dry powder to be discharged normally into the filling barrel. After filling is completed, the driving component drives the piston back into the connecting pipe to block the connecting pipe, preventing the dry powder remaining on the inner wall of the connecting pipe from being discharged under gravity or vibration, thereby reducing powder leakage from the discharge port. Attached Figure Description

[0018] Figure 1 This is a perspective view of the present invention;

[0019] Figure 2 This is a schematic diagram showing the connection between the discharge pipe and the connecting pipe of this utility model;

[0020] Figure 3 for Figure 2 A magnified view of a portion of point A shown;

[0021] Figure 4 This is a partial cross-sectional view of the blocking mechanism of this utility model.

[0022] In the picture:

[0023] 1. Storage mechanism; 11. Cylinder; 12. Feed hopper; 13. Discharge pipe; 2. Screw metering mechanism; 21. Screw; 22. Drive motor; 3. Lifting mechanism; 4. Blocking mechanism; 41. Connecting pipe; 42. Cover plate; 43. Piston; 44. Drive component; 441. Vertical rod; 442. Guide block; 443. Second compression spring; 444. First wedge block; 445. Second wedge block; 45. Collar; 46. First compression spring; 47. Baffle. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present utility model.

[0025] Please see Figure 1-4 This utility model discloses a dialysis dry powder filling device, comprising:

[0026] Storage mechanism 1 includes a cylinder 11 for storing dry powder to be filled, a feed hopper 12 for adding dry powder into the cylinder 11 is provided at the top of the cylinder 11, and a discharge pipe 13 for discharging the dry powder inside the cylinder 11 is provided at the bottom of the cylinder 11.

[0027] The screw metering mechanism 2 is installed on the cylinder 11 and is used to quantitatively push dry powder out of the discharge pipe 13;

[0028] Lifting mechanism 3 is connected to cylinder 11 and is used to drive cylinder 11 to move up and down.

[0029] The blocking mechanism 4 includes a connecting pipe 41 located at the bottom end of the discharge pipe 13 and connected to the discharge pipe 13. A cover plate 42 for sealing the opening of the filling barrel is provided on the connecting pipe 41. A piston 43 that dynamically seals with the connecting pipe 41 and a driving component 44 for driving the piston 43 to enter and exit the connecting pipe 41 are movably arranged inside the connecting pipe 41.

[0030] This invention adds a connecting pipe 41 to the discharge pipe 13, and installs a piston 43 and a driving component 44 inside the connecting pipe 41 to drive the piston 43 to move up and down. When the discharge pipe 13 is discharging normally, the driving component 44 can drive the piston 43 to move out of the connecting pipe 41, so that the dry powder can be discharged normally into the filling barrel. After filling is completed, the driving component 44 drives the piston 43 to move back into the connecting pipe 41 to block the connecting pipe 41, so that the dry powder remaining on the inner wall of the connecting pipe 41 cannot be discharged under gravity or vibration, thereby reducing powder leakage from the discharge port.

[0031] It should be noted that the cover plate 42 is provided with an exhaust hole for the gas inside the filling barrel to be discharged, ensuring that the dry powder can enter the filling barrel normally.

[0032] In one embodiment, the screw metering mechanism 2 includes a screw 21 rotatably disposed inside the cylinder 11 and one end inserted into the discharge pipe 13, and a drive motor 22 for driving the screw 21 to rotate.

[0033] With this design, the screw 21 is driven to rotate by the drive motor 22, so that the dry powder in the cylinder 11 falls into the screw 21 and is pushed downward by the screw 21. By controlling the number of rotations of the screw 21, the dry powder can be quantitatively supplied. At the same time, because the screw will actively push the dry powder to move, the dry powder can be prevented from clogging at the discharge pipe 13.

[0034] It should be noted that the screw metering mechanism 2 is common knowledge in this field, so its specific structural composition and working principle will not be described in detail here.

[0035] In one embodiment, a collar 45 is fixedly provided on the discharge pipe 13, and a first compression spring 46 is provided between the collar 45 and the connecting pipe 41. When the first compression spring 46 is in its natural state, the bottom end of the discharge pipe 13 is inserted into the connecting pipe 41.

[0036] This design allows the cover plate 42 to cover the opening of the filling barrel when the lifting mechanism 3 moves the storage mechanism 1 downward. At this time, the continued downward movement of the lifting mechanism 3 will compress the first compression spring 46, so that the first compression spring 46 can provide a large downward pressure to the cover plate 42 when the connecting pipe 41 discharges material, ensuring that the cover plate 42 seals the opening of the filling barrel and prevents other materials from entering the filling barrel.

[0037] In one embodiment, the driving component 44 includes a vertical rod 441 disposed on the top of the piston 43, a guide block 442 disposed on the vertical rod 441 and inserted into the connecting pipe 41, a guide groove disposed in the connecting pipe 41 for the guide block 442 to move up and down, a second compression spring 443 disposed at the bottom of the guide block 442 and located in the guide groove, and when the second compression spring 443 is in its natural state, the piston 43 is located in the connecting pipe 41. The driving component 44 also includes a plurality of first wedge blocks 444 disposed on the top of the vertical rod 441 and a second wedge block 445 disposed on the bottom of the screw 21, the second wedge block 445 being used to push the first wedge blocks 444 downward when rotating.

[0038] This design ensures that when the piston 43 is not in the filling state, it is pushed by the second compression spring 443 and is located inside the connecting pipe 41, preventing the dry powder inside the connecting pipe 41 from being discharged. During filling, as the lifting mechanism 3 drives the storage mechanism 1 to move down, the connecting pipe 41 will initially be unable to move down because the cover plate 42 is in contact with the opening of the filling barrel. At this time, the continued movement of the lifting mechanism 3 will cause the discharge pipe 13 and the screw 21 to continue to move down, thereby pushing the upright rod 441 below the screw 21 to move down, causing the piston 43 to move out of the connecting pipe 41. Then, the rotation of the screw 21 allows the dry powder to enter the connecting pipe 41. Due to the combined action of the first wedge block 444, the second wedge block 445, and the second compression spring 443, the upright rod 441 will shake up and down when the screw 21 rotates, thereby ensuring that as much dry powder as possible can be discharged into the filling barrel.

[0039] In one embodiment, the guide block 442 is provided with a baffle 47 for preventing dry powder from entering the guide groove.

[0040] This design, by sealing the guide channel with baffle 47, prevents dry powder from entering the guide channel and improves the smoothness of the movement of guide block 442 within the guide channel.

[0041] It should be noted that, in order to reduce the amount of dry powder remaining in the connecting pipe 41, the tops of the baffle 47 and the guide block 442 are inclined surfaces, so that the dry powder falling on them will not accumulate too much on their tops.

[0042] In one embodiment, the piston 43 is frustum-shaped, and the diameter of the top end of the piston 43 is smaller than the diameter of the bottom end, which is used to guide the dry powder above the piston 43 to slide down.

[0043] This design allows the dry powder to fall onto the piston 43 and be discharged in all directions under the guidance of the conical surface of the piston 43, further reducing dry powder residue.

[0044] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0045] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0046] Additionally, "multiple" refers to two or more.

[0047] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A dialysis dry powder filling device, characterized by, include: Storage mechanism (1), the storage mechanism (1) includes a cylinder (11) for storing dry powder to be filled, the top of the cylinder (11) is provided with a feed hopper (12) for replenishing the dry powder into the cylinder (11), and the bottom of the cylinder (11) is provided with a discharge pipe (13) for discharging the dry powder inside the cylinder (11). The screw metering mechanism (2) is installed on the cylinder (11) and is used to quantitatively push dry powder out of the discharge pipe (13); Lifting mechanism (3), which is connected to cylinder (11) and is used to drive cylinder (11) to move up and down; The blocking mechanism (4) includes a connecting pipe (41) disposed at the bottom end of the discharge pipe (13) and connected to the discharge pipe (13). The connecting pipe (41) is provided with a cover plate (42) for sealing the mouth of the filling barrel. The connecting pipe (41) is movably disposed inside the connecting pipe (41) and dynamically seals the connecting pipe (41), and a driving component (44) for driving the piston (43) to enter and exit the connecting pipe (41).

2. The dialysis dry powder filling device according to claim 1, characterized in that: The screw metering mechanism (2) includes a screw (21) rotatably disposed inside the cylinder (11) and one end inserted into the discharge pipe (13) and a drive motor (22) for driving the screw (21) to rotate.

3. The dialysis dry powder filling device of claim 1, wherein: A collar (45) is fixedly installed on the discharge pipe (13), and a first compression spring (46) is provided between the collar (45) and the connecting pipe (41). When the first compression spring (46) is in its natural state, the bottom end of the discharge pipe (13) is inserted into the connecting pipe (41).

4. The dialysis dry powder filling device of claim 2, wherein: The driving component (44) includes a vertical rod (441) disposed on the top of the piston (43), a guide block (442) disposed on the vertical rod (441) and inserted into the connecting pipe (41), a guide groove disposed in the connecting pipe (41) for the guide block (442) to move up and down, a second compression spring (443) disposed at the bottom of the guide block (442) and located in the guide groove, when the second compression spring (443) is in the natural state, the piston (43) is located in the connecting pipe (41), the driving component (44) also includes a plurality of first wedge blocks (444) disposed on the top of the vertical rod (441) and a second wedge block (445) disposed on the bottom of the screw (21), the second wedge block (445) is used to push the first wedge block (444) downward when rotating.

5. The dialysis dry powder filling device of claim 4, wherein: The guide block (442) is provided with a baffle (47) to prevent dry powder from entering the guide groove.

6. The dialysis dry powder filling device of claim 1, wherein: The piston (43) is frustum shaped, and the diameter of the top end of the piston (43) is smaller than the diameter of the bottom end, which is used to guide the dry powder above the piston (43) to slide down.

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