Liquid preparation device and liquid supply system

Abstract

The utility model discloses a liquid preparation device and a liquid supply system, and belongs to the technical field of medical equipment. Comprising a liquid preparation barrel which is provided with a feeding port, a discharging port and a filter residue outlet; the filter screen is installed in the liquid preparation barrel, the peripheral side wall of the filter screen is connected with the inner wall of the liquid preparation barrel in a sealed mode, the filter screen is provided with a first inclined face and a plurality of second inclined faces, the inclined lower end of the first inclined face is aligned with the filter residue outlet, and the second inclined faces all face the first inclined face. The plastic bag residues are not prone to being closely attached to the inner wall of the liquid preparation barrel in the sliding process, the situation that plastic bags are stacked on the edge of the filter screen is reduced, and the problem that the plastic bag residues are stacked in the liquid preparation barrel in the prior art is practically solved in cooperation with the mode that the peripheral side wall of the filter screen is connected with the inner wall of the liquid preparation barrel in a sealed mode.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to a liquid dispensing device and a liquid supply system. Background Art

[0002] Hemodialysis is a form of renal replacement therapy for patients with acute and chronic renal failure. It removes metabolic waste and maintains electrolyte and acid-base balance by draining blood from the body and exchanging it with dialysate in the dialyzer. Dialysate is typically prepared from dialysis dry powder in a pre-mixed ratio. To meet the needs of a large number of patients undergoing dialysis simultaneously, a centralized fluid supply system is typically used to pre-mix the dialysis powder into a concentrated solution, which is then delivered to the dialysis machine via a pipeline. The centralized fluid supply system includes a dispensing device and infusion pipelines, and its development direction is automation, intelligence, controllability, and safety. It automatically unpacks, dispenses, and delivers dialysis dry powder. During the preparation of the dialysis concentrate, the bagged dialysis dry powder is automatically cut open by a blade and dropped into a dispensing bucket for dispensing. Plastic bag residue generated during the bag cutting process also falls into the dispensing bucket, potentially causing unstable conductivity probe detection, pipeline blockage, and affecting dispensing quality. Therefore, the plastic bag residue needs to be separated.

[0003] In the prior art, a horizontal filter screen is provided at the water outlet at the bottom of the liquid mixing barrel. After the dry powder is dissolved, the plastic bag residue accumulates on the upper part of the filter screen and can only be removed manually. Utility Model Content

[0004] The utility model provides a liquid dispensing device and a liquid supply system, which are used to solve the problem in the prior art that plastic bag residues are accumulated in a liquid dispensing barrel.

[0005] The first aspect of the present invention provides a liquid dispensing device, comprising:

[0006] A liquid mixing barrel, wherein the liquid mixing barrel is provided with a feeding port, a discharging port and a filter residue outlet;

[0007] A filter screen is installed in the liquid distribution barrel, the peripheral side wall of the filter screen is sealed with the inner wall of the liquid distribution barrel, the filter screen has a first inclined surface and multiple second inclined surfaces, the inclined lower end of the first inclined surface is aligned with the filter residue outlet, and the multiple second inclined surfaces are all facing the first inclined surface.

[0008] In some embodiments of the first aspect, a width of a portion of the first inclined surface gradually narrows from an inclined upper end of the first inclined surface to an inclined lower end of the first inclined surface.

[0009] In some embodiments of the first aspect, the first inclined surface includes a shape matching section, a diameter-changing section, and a constant diameter section arranged in sequence;

[0010] The shape matching section is located at the inclined upper end of the first inclined surface, and the shape matching section is used to match the shape of the inner wall of the liquid mixing barrel;

[0011] In the direction from the shape matching section to the constant diameter section, the width of the variable diameter section narrows linearly;

[0012] The constant diameter section is located at the inclined lower end of the first inclined surface.

[0013] In some embodiments of the first aspect, the plurality of second inclined surfaces are all inclined toward the inclined lower end of the first inclined surface.

[0014] In some embodiments of the first aspect, the filter screen includes a first inclined block having the first inclined surface and a second inclined block having the second inclined surface;

[0015] The second tilting blocks are connected to both sides of the first tilting block respectively, and the tilting surfaces of the two second tilting blocks are arranged opposite to each other.

[0016] In some embodiments of the first aspect, the first inclined surface has an inclination angle of 5 to 45° with respect to the horizontal cross section of the liquid dispensing barrel;

[0017] The inclination angle between the second inclined surface and the horizontal cross section of the liquid dispensing barrel is 5-45°;

[0018] In some embodiments of the first aspect, the filter mesh has an aperture of 1 to 5 mm.

[0019] In some embodiments of the first aspect, the liquid mixing barrel further has a flushing water inlet; the flushing water inlet is arranged above the inclined upper end of the first inclined surface.

[0020] In some embodiments of the first aspect, the liquid preparation barrel further has one or more liquid preparation water inlets, and at least one of the liquid preparation water inlets is located above the filter screen.

[0021] A second aspect of the present invention provides a liquid supply system, comprising:

[0022] dialysis machines;

[0023] The liquid dispensing device described in the first aspect is applied;

[0024] A liquid storage barrel is connected to the liquid dispensing device and the dialysis machine through pipelines.

[0025] It can be seen from the above technical solutions that the present invention has the following advantages:

[0026] First, an embodiment of the present invention provides a liquid dispensing device, comprising a liquid dispensing barrel and a filter screen disposed within the liquid dispensing barrel. The filter screen has a first inclined surface and a plurality of second inclined surfaces, the inclined lower end of the first inclined surface being aligned with the filter residue outlet, and the plurality of second inclined surfaces all facing the first inclined surface. Plastic bag residue slides along the second inclined surface to the first inclined surface, and then slides out of the filter residue outlet along the first inclined surface. The sliding stroke of the plastic bag residue on the second inclined surface is short, making it difficult for the plastic bag residue to adhere closely to the inner wall of the liquid dispensing barrel. When sliding on the first inclined surface, the edge of the first inclined surface becomes the second inclined surface, making it difficult for the plastic bag residue to adhere closely to the edge of the second inclined surface, thereby reducing the accumulation of plastic bags on the edge of the filter screen. Furthermore, because the peripheral side walls of the filter screen are sealed to the inner wall of the liquid dispensing barrel, after dry powder and plastic bag residue fall into the filter screen, the dry powder passes through the filter screen, while the plastic bag residue remains on the filter screen. The plastic bag residue is difficult to fall between the edge of the filter screen and the barrel wall of the liquid dispensing barrel, effectively solving the problem of plastic bag residue accumulating in the liquid dispensing barrel in the prior art.

[0027] 2. An embodiment of the present invention provides a liquid supply system, including a dialysis machine, a liquid dispensing device and a liquid storage tank. Since the liquid dispensing device can effectively separate the bag residue from the powder, it avoids pipeline blockage and unstable conductivity probe detection, thereby improving the safety and reliability of the liquid supply system. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0029] Figure 1 A schematic diagram of the overall structure of a liquid dispensing device provided in the first aspect of an embodiment of the utility model;

[0030] Figure 2 A schematic diagram of the overall cross-sectional structure of a liquid dispensing device provided in the first aspect of an embodiment of the utility model;

[0031] Figure 3 A schematic structural diagram of a filter screen provided in accordance with the first aspect of the present invention;

[0032] Figure 4 The cross-sectional structure of the filter provided by the first aspect of the embodiment of the utility model is shown as follows: Figure 1 ;

[0033] Figure 5 The cross-sectional structure of the filter provided by the first aspect of the embodiment of the utility model is shown as follows: Figure 2 ;

[0034] Figure 6 This is a schematic diagram of the overall structure of a liquid supply system provided in the second aspect of an embodiment of the utility model.

[0035] Reference numerals:

[0036] 1. Liquid dispensing barrel; 10. Feeding port; 11. Discharging port; 12. Filter residue outlet; 13. Rinse water inlet; 2. Filter screen; 20. First inclined block; 200. First inclined surface; 2000. Shape-matching section; 2001. Variable diameter section; 2002. Constant diameter section; 21. Second inclined block; 210. Second inclined surface; a. Dialysis machine; b. Liquid dispensing device; c. Liquid storage barrel. DETAILED DESCRIPTION

[0037] The embodiment of the utility model provides a liquid dispensing device and a liquid supply system, which are used to solve the problem of plastic bag residue residue in the prior art.

[0038] In order to make the purpose, features, and advantages of the present invention more obvious and easy to understand, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0039] See also Figures 1 to 5 The utility model provides a liquid dispensing device, comprising:

[0040] The liquid dispensing barrel 1 is provided with a feeding port 10, a discharging port 11 and a filter residue outlet 12;

[0041] The filter screen 2 is installed in the liquid mixing barrel 1, and the peripheral side wall of the filter screen 2 is sealed with the inner wall of the liquid mixing barrel 1. The filter screen 2 has a first inclined surface 200 and multiple second inclined surfaces 210. The inclined lower end of the first inclined surface 200 is aligned with the filter residue outlet 12, and the multiple second inclined surfaces 210 are all facing the first inclined surface 200.

[0042] When the plastic bag residue and dry powder fall into the liquid preparation barrel 1 at the same time, the dry powder will fall from the mesh of the filter screen 2, and then the dry powder will enter the bottom of the liquid preparation barrel 1 to mix with the liquid, and the plastic bag residue will remain on the filter screen 2. If the plastic bag residue falls to the first inclined surface 200, the plastic bag residue will slide along the first inclined surface 200 and slide out of the liquid preparation barrel 1 from the filter residue outlet 12. If the plastic bag residue falls to the second inclined surface 210, the plastic bag residue will first slide along the second inclined surface 210 to the first inclined surface 200, and then slide along the first inclined surface 200 and slide out of the filter residue outlet 12.

[0043] It can be seen from the above application scenarios that if the plastic bag residue falls onto the second inclined surface 210, the plastic bag residue will slide to the first inclined surface 200. The sliding stroke of the plastic bag residue on the second inclined surface 210 is short, and the plastic bag residue is not easy to fit closely with the inner wall of the liquid mixing barrel 1; if the plastic bag residue falls onto the first inclined surface 200, since the edge of the first inclined surface 200 is the second inclined surface 210, even if the sliding stroke is long, it is difficult for the plastic bag residue to fit closely with the edge of the second inclined surface 210, effectively reducing the accumulation of plastic bags on the edge of the filter screen 2.

[0044] Compared with the existing technology, this solution has the following advantages: First, the filter screen 2 of this solution is set with multiple inclined surfaces, which can reduce the accumulation of plastic bag residue on the edge of the filter screen 2, reduce the possibility of plastic bag residue approaching the gap between the edge of the filter screen 2 and the wall of the liquid mixing barrel 1, and reduce the problem of plastic bag residue falling from the gap; second, the peripheral side walls of the filter screen 2 of this solution are sealed with the inner wall of the liquid mixing barrel 1, and plastic bag residue is difficult to fall from the edge of the filter screen 2 and the wall of the liquid mixing barrel 1, thereby avoiding the problem of plastic bag residue and powder being mixed again from the root.

[0045] As a possible example, Figure 1 and Figure 2 As shown, this embodiment provides a possible implementation structure of a liquid mixing barrel 1, the top of the liquid mixing barrel 1 has a feeding port 10, the bottom of the liquid mixing barrel 1 has a gradually narrowing discharge port 11, the filter residue outlet 12 is located on the side wall of the liquid mixing barrel 1, and one or more liquid mixing water inlets are additionally provided on the side wall of the liquid mixing barrel 1, at least one liquid mixing water inlet is provided above the filter screen 2, if there are extra liquid mixing water inlets, the extra liquid mixing water inlets can be provided below the filter screen 2 for cooperation with the stirring device, so that the dry powder is mixed more evenly; a stirring device is also provided in the liquid mixing barrel 1, and the plastic bag residue and dry powder enter the liquid mixing barrel 1 from the feeding port 10, and then after being filtered through the filter screen 2, the plastic bag residue and dry powder can be separated, and the dry powder falls, and then the dry powder is stirred by the stirring device to complete the liquid mixing.

[0046] In order to achieve efficient cleaning of the filter 2, as Figure 2As shown, the side wall of the liquid mixing barrel 1 is also provided with a flushing water inlet 13; the flushing water inlet 13 is arranged at the inclined upper end of the first inclined surface 200. When there is plastic bag residue remaining in the concave part in the middle of the filter screen, or when the filter screen 2 needs to be cleaned, water is pumped into the flushing water inlet 13, and high-speed water flows through the first inclined surface 200 and the second inclined surface 210 of the filter screen 2, taking away the plastic bag residue on the filter screen 2 without manual salvage, thereby achieving efficient cleaning of the filter screen 2.

[0047] As a possible example, Figures 3 to 5 As shown, this embodiment provides a possible implementation structure of a filter screen 2, which includes a first inclined block 20 having a first inclined surface 200 and two second inclined blocks 21 having second inclined surfaces 210; the second inclined blocks 21 are respectively connected to both sides of the first inclined block 20, and the inclined surfaces of the two second inclined blocks 21 are arranged relative to each other, so that after the plastic bag residue falls on the filter screen 2, no matter whether the plastic bag residue falls on the first inclined block 20 or the second inclined block 21, the plastic bag residue will eventually gather on the first inclined surface 200, and then separate from the filter residue outlet 12 along the first inclined surface 200.

[0048] In a specific embodiment, a method for sealingly connecting the filter screen 2 and the liquid mixing barrel 1 is provided, and a sealing ring is also provided between the filter screen 2 and the liquid mixing barrel 1. The sealing ring is elastically clamped between the liquid mixing barrel 1 and the filter screen 2, and the filter screen 2 and the liquid mixing barrel 1 squeeze the sealing ring to achieve sealing.

[0049] It should be pointed out that the sealing ring used in the above-mentioned sealing connection is the preferred embodiment of this solution. Other sealing connection methods, such as adhesive sealing methods, can be selected by those skilled in the art according to their actual needs.

[0050] In a specific embodiment, in order to improve the collection efficiency of plastic bag residue, as Figure 3 As shown, from the inclined upper end of the first inclined surface 200 to the inclined lower end of the first inclined surface 200, the width of at least part of the first inclined surface 200 gradually narrows. After the plastic bag residue falls in, it will slide along the narrowing direction and finally gather at the filter residue outlet 12, thereby improving the collection efficiency of the plastic bag residue. In addition, the filter residue outlet 12 does not need to be too large, which can reduce external pollution from entering the liquid preparation barrel 1 through the filter residue outlet 12.

[0051] Further, such as Figure 3As shown, the first inclined surface 200 includes a shape matching section 2000, a variable diameter section 2001 and a constant diameter section 2002 arranged in sequence; the shape matching section 2000 is located at the inclined upper end of the first inclined surface 200, and the shape matching section 2000 is used to match the shape of the inner wall of the liquid mixing barrel 1; in the direction from the shape matching section 2000 to the constant diameter section 2002, the width of the variable diameter section 2001 linearly narrows; the constant diameter section 2002 is located at the inclined lower end of the first inclined surface 200. After the plastic bag residue falls into the filter screen 2, the plastic bag residue will gradually slide toward the filter residue outlet 12 along the narrowing structure and be collected together.

[0052] Specifically, the liquid mixing barrel 1 is a cylindrical structure, the inclined upper end of the first inclined block 20 is a triangular fan-shaped block, the inclined lower end of the first inclined block 20 extends with a protruding arm to form the above-mentioned inclined surface, and the two second inclined blocks 21 are both triangular fan-shaped blocks, thereby forming a filter screen 2.

[0053] In a specific embodiment, in order to increase the sliding speed of the plastic bag residue, multiple second inclined surfaces 210 are inclined toward the inclined lower end of the first inclined surface 200. After the plastic bag residue falls onto the second inclined surface 210, it will move directly to the inclined lower end of the first inclined surface 200. Its movement trajectory is an oblique line. Compared with the second inclined surface 210 vertically toward the first inclined surface 200, its movement trajectory is a right angle line, which has faster movement and sliding speed and higher separation efficiency.

[0054] In a specific embodiment, the inclination angle between the first inclined surface 200 and the horizontal cross-section of the liquid mixing barrel 1 is preferably 5°, the inclination angle between the second inclined surface 210 and the horizontal cross-section of the liquid mixing barrel 1 is preferably 5°, and the maximum inclination angle is 45°, which can achieve a balance between occupied volume and inclination efficiency.

[0055] In a specific embodiment, the mesh size of the filter screen 2 is preferably 5 mm, and the minimum mesh size is 1 mm to ensure that dry powder and liquid can pass through.

[0056] From the above, we can know the basic structure and principle of the liquid dispensing device of this scheme. The following will provide a liquid supply system using the liquid dispensing device.

[0057] Please refer to Figure 6 This embodiment provides a liquid supply system, including: a dialysis machine a, a liquid dispensing device b, and a liquid storage barrel c. The liquid storage barrel c is connected to the liquid dispensing device b and the dialysis machine a through pipelines. The specific pipeline connection settings and pipeline accessories settings of the liquid storage barrel c, the liquid dispensing device b, and the dialysis machine a can be referred to the prior applications 202421607542.0 and 202410920210.6.

[0058] When supplying liquid, the liquid preparation device b is used to prepare the concentrated liquid required by the dialysis machine a. The prepared concentrated liquid is passed into the liquid storage barrel c. Then, when needed, the concentrated liquid in the liquid storage barrel c is passed into the dialysis machine for dialysis. During this process, since the liquid preparation device b can well separate the bag residue from the powder, it avoids pipeline blockage and unstable conductivity probe detection, thereby improving the safety and reliability of the liquid supply system.

[0059] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments can still be modified, or some of the technical features thereof can be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

[0060] Finally, it should be noted that, in this article, relational terms such as first and second, etc. are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations.

Claims

1. A liquid dispensing device, characterized in that: include: A liquid mixing barrel, wherein the liquid mixing barrel is provided with a feeding port, a discharging port and a filter residue outlet; A filter screen is installed in the liquid distribution barrel, the peripheral side wall of the filter screen is sealed with the inner wall of the liquid distribution barrel, the filter screen has a first inclined surface and multiple second inclined surfaces, the inclined lower end of the first inclined surface is aligned with the filter residue outlet, and the multiple second inclined surfaces are all facing the first inclined surface.

2. The liquid dispensing device according to claim 1, characterized in that: From the inclined upper end of the first inclined surface to the inclined lower end of the first inclined surface, the width of at least a portion of the first inclined surface gradually narrows.

3. The liquid dispensing device according to claim 2, characterized in that: The first inclined surface comprises a shape matching section, a diameter-changing section and a constant diameter section arranged in sequence; The shape matching section is located at the inclined upper end of the first inclined surface, and the shape matching section is used to match the shape of the inner wall of the liquid mixing barrel; In the direction from the shape matching section to the constant diameter section, the width of the variable diameter section narrows linearly; The constant diameter section is located at the inclined lower end of the first inclined surface.

4. The liquid dispensing device according to claim 1, characterized in that: The plurality of second inclined surfaces are all inclined toward the inclined lower end of the first inclined surface.

5. The liquid dispensing device according to claim 1, characterized in that: The filter screen includes a first inclined block having the first inclined surface and a second inclined block having the second inclined surface; The second tilting blocks are connected to both sides of the first tilting block respectively, and the tilting surfaces of the two second tilting blocks are arranged opposite to each other.

6. The liquid dispensing device according to claim 1, characterized in that: The inclination angle between the first inclined surface and the horizontal cross section of the liquid dispensing barrel is 5-45°; The inclination angle between the second inclined surface and the horizontal cross section of the liquid mixing barrel is 5-45°.

7. The liquid dispensing device according to claim 1, characterized in that: The pore size of the filter is 1-5 mm.

8. The liquid dispensing device according to claim 1, characterized in that: The liquid mixing barrel also has a flushing water inlet; the flushing water inlet is arranged at the inclined upper end of the first inclined surface.

9. The liquid dispensing device according to claim 1, characterized in that: The liquid preparation barrel also has one or more liquid preparation water inlets, and at least one of the liquid preparation water inlets is arranged above the filter screen.

10. A liquid supply system, characterized in that: include: dialysis machines; A liquid dispensing device according to any one of claims 1 to 9 is used; A liquid storage barrel is connected to the liquid dispensing device and the dialysis machine through pipelines.

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