Dry powder conveying device and centralized liquid supply system

Abstract

The embodiment of the utility model discloses a dry powder conveying device and a centralized liquid supply system, and relates to the technical field of medical instruments, the dry powder conveying device comprises a charging tray and a dry powder detection assembly; the charging tray is provided with dry powder grids of various specifications, and the dry powder grids are used for placing dry powder bags; the dry powder detection assembly is used for detecting whether dry powder bags exist in the dry powder grids. Based on the scheme, through the design of the dry powder grids of different specifications and the dry powder detection assembly, the dry powder weight needed during dialysis concentrated solution preparation can be accurately matched, and the corresponding dry powder grid is positioned and detected to convey the dry powder bag, so that the dry powder conveying accuracy is improved, and accurate solution preparation is facilitated to reduce waste.

Description

Technical Field

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

[0002] Hemodialysis is the main form of replacement therapy for patients with acute and chronic renal failure, and ensuring a stable supply of sufficient and safe dialysate is the core element for the smooth implementation of hemodialysis treatment.

[0003] Dialysis concentrate is an important component of dialysate, and dialysis concentrate is mainly configured and transported in a centralized fluid supply system. Since most centralized fluid supply systems need to be connected to large-scale hemodialysis machines, in order to ensure a stable supply of dialysate, dialysis concentrate is usually prepared in advance and a large amount of surplus is prepared. However, dialysis concentrate cannot be retained until the next day, which can easily cause a lot of waste.

[0004] To reduce waste, currently, dialysis concentrate is prepared using dry powder according to the accurately fed back dialysis concentrate preparation amount through a centralized liquid supply system. However, the dry powder delivery device for delivering dry powder for preparation in the centralized liquid supply system can only provide a single specification of dry powder, which is unable to accurately prepare the liquid, and the accuracy of dry powder delivery needs to be improved. Utility Model Content

[0005] The embodiment of the utility model discloses a dry powder conveying device and a centralized liquid supply system, which are used to improve the technical problem of low dry powder conveying accuracy in the existing centralized liquid supply system.

[0006] A first aspect of an embodiment of the utility model provides a dry powder conveying device, comprising: a material tray and a dry powder detection component;

[0007] The material tray is provided with dry powder grids of various specifications, and the dry powder grids are used to place dry powder bags;

[0008] The dry powder detection component is used to detect whether there is a dry powder bag in the dry powder grid.

[0009] Optionally, the dry powder detection assembly includes a push rod and a dry powder detector;

[0010] The material tray is provided with a through hole, and the dry powder detector is arranged outside the through hole;

[0011] The first end of the push rod passes through the through hole and abuts against the dry powder bag, and the second end of the push rod is placed in the detection area of ​​the dry powder detector.

[0012] Optionally, the push rod is provided with an abutment member, and the abutment member abuts against the material tray;

[0013] A spring is sleeved on the push rod, and the spring is arranged between the abutment member and the dry powder detector;

[0014] The abutment member is used to compress the spring.

[0015] Optionally, a fixing block is provided outside the through hole, and the dry powder detector is arranged on the fixing block;

[0016] The second end of the push rod passes through the fixing block and is placed in the detection area.

[0017] Optionally, the dry powder detector is a photoelectric switch;

[0018] The photoelectric switch includes a receiver and a transmitter, and a detection area is formed between the receiver and the transmitter.

[0019] Optionally, the dry powder detection component is also used to detect the number of dry powder bags in the dry powder grid.

[0020] Optionally, a plurality of dry powder grids of each specification are provided.

[0021] Optionally, it further comprises a material taking mechanism; the material taking mechanism comprises a material grabber and a driver;

[0022] The driver is drivingly connected to the material grabber;

[0023] The grabber is used for grabbing the dry powder bag.

[0024] Optionally, it also includes a liquid dispensing pump and a liquid dispensing barrel;

[0025] The liquid preparation barrel is used to place dry powder and reverse osmosis water in the dry powder bag;

[0026] The liquid dosing pump is connected to the liquid dosing barrel, and is used for conveying reverse osmosis water and stirring the reverse osmosis water and dry powder in the liquid dosing barrel.

[0027] A second aspect of an embodiment of the present utility model provides a dry powder conveying device, comprising the dry powder conveying device described in any one of the first aspects of the present utility model.

[0028] It can be seen from the above technical solutions that the embodiments of the utility model have the following advantages:

[0029] The embodiment of the utility model provides a dry powder delivery device, including: a material tray and a dry powder detection component; the material tray is provided with dry powder grids of various specifications, and the dry powder grids are used to place dry powder bags; the dry powder detection component is used to detect whether there is a dry powder bag in the dry powder grid. Based on the above scheme, through the design of dry powder grids of different specifications and dry powder detection components, it is beneficial to accurately match the dry powder weight required for the preparation of dialysis concentrate, and locate and detect the corresponding dry powder grid to deliver the dry powder bag, thereby improving the accuracy of dry powder delivery, and helping to achieve accurate liquid preparation to reduce waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0031] Figure 1 This is a schematic structural diagram of a dry powder conveying device provided in an embodiment of the utility model;

[0032] Figure 2 A top view of a combination of a material tray and a dry powder grid provided in an embodiment of the utility model;

[0033] Figure 3 for Figure 2 Sectional view of section AA;

[0034] Figure 4 for Figure 3 Schematic diagram of local structure B;

[0035] In the figure: 1. material tray; 2. dry powder grid for 10 people; 3. dry powder grid for 5 people; 4. dry powder grid for 1 person; 5. ejector; 6. spring; 7. fixing block; 8. dry powder detector; 9. liquid dispensing pump; 10. material taking mechanism; 11. liquid dispensing barrel. DETAILED DESCRIPTION

[0036] In order to make the purpose, features and advantages of the utility model more obvious and easy to understand, the technical solutions in the embodiments of the utility model are clearly and completely described. Obviously, the embodiments described below are only part of the embodiments of the utility model, and all other embodiments obtained by ordinary technicians in this field without creative work based on the embodiments of the utility model belong to the scope of protection of the utility model.

[0037] It should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the embodiments of the utility model.

[0038] In addition, the terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features.

[0039] In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0040] In the description of the embodiments of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific circumstances.

[0041] See also Figure 1 , an embodiment of the utility model provides a dry powder conveying device, comprising: a material tray 1 and a dry powder detection component;

[0042] The material tray 1 is provided with dry powder grids of various specifications, and the dry powder grids are used to place dry powder bags;

[0043] The dry powder detection component is used to detect whether there is a dry powder bag in the dry powder grid.

[0044] In this embodiment, dry powder grids of different specifications are provided on the material tray 1, and each specification of dry powder grid is used to assemble dry powder bags of corresponding specifications. The dry powder grid can be upwardly open to facilitate the placement and transportation of dry powder bags. When the dry powder bag is placed in the dry powder grid, the dry powder detection component can locate and detect the presence of the dry powder bag in the corresponding dry powder grid. Based on the above scheme, through the design of dry powder grids of different specifications and dry powder detection components, it is beneficial to accurately match the dry powder weight required for the preparation of dialysis concentrate, and locate the dry powder grid to transport the dry powder bag, thereby improving the accuracy of dry powder transportation, and helping to achieve accurate liquid preparation to reduce waste;

[0045] In the specific implementation, different dry powder detection components need to be used according to different dry powder grid structures or different spatial and positional relationships between the material tray and the conveying device, liquid supply device and other devices. In the development process of the technical solution of this application, we have tested different implementation methods, including: the first solution is to set a graphic acquisition device above the material tray, such as one or more image acquisition devices to collect images of each dry powder grid of the material tray to identify whether there are dry powder bags or their distribution or remaining quantity; the second solution is to use the principle of geometric optics, such as setting an optical device for reflection in the dry powder grid, and then use an optical sensor set above the material tray to detect whether there are dry powder bags. These solutions can all achieve the detection purpose of the dry powder detection component.

[0046] In a more specific embodiment, see Figure 1 to Figure 2 There are multiple dry powder grids for each specification.

[0047] In this embodiment, the specifications of the dry powder grid may include a 10-person dry powder grid 2, a 5-person dry powder grid 3 and a 1-person dry powder grid 4. The 10-person dry powder grid 2, the 5-person dry powder grid 3 and the 1-person dry powder grid 4 correspond to dry powder bags for placing 10-person, 5-person and 1-person dry powder preparation contents, respectively. By designing these three different specifications of dry powder grids, it is possible to flexibly respond to and widely adapt to diverse dry powder usage requirements; in specific implementation, multiple dry powder grids of each type can be set, which helps to ensure continuous and stable dry powder delivery.

[0048] In a more specific embodiment, see Figure 3 , Figure 3 This is a schematic diagram of the dry powder detection component being arranged on the material tray 1. The dry powder detection component structures on dry powder grids of different specifications are similar. Figure 4 , the dry powder detection assembly includes a push rod 5 and a dry powder detector 8;

[0049] The material tray 1 is provided with a through hole, and a dry powder detector 8 is provided outside the through hole;

[0050] A through hole is formed at the first end of the push rod 5 to abut against the dry powder bag, and a second end of the push rod 5 is placed in the detection area of ​​the dry powder detector 8 .

[0051] It should be noted that, in specific implementation, there are many ways in which the dry powder detection component can realize detection based on the abutment of the dry powder bag. For example, ultrasonic sensors, photoelectric switches and other sensors can be used as dry powder detection components and set in the dry powder grid for direct detection, or indirect cooperation detection can be performed based on corresponding sensors.

[0052] In this embodiment, the dry powder detection component includes a push rod 5 and a dry powder detector 8. The first end of the push rod 5 passes through the through hole opened at the bottom of the material tray 1 and then further passes through the dry powder grid. The dry powder detector 8 is provided on the side of the through hole of the material tray 1 opposite to the dry powder grid. When the dry powder bag in the dry powder grid abuts and applies pressure to the first end of the push rod 5, the second end of the push rod 5 moves along the through hole toward the dry powder detector 8 and enters the detection area of ​​the dry powder detector 8, triggering the detection mechanism of the dry powder detector 8, thereby detecting the presence of the dry powder bag in the dry powder grid. When the dry powder bag in the dry powder grid is taken out, the push rod 5 is no longer subjected to force, and the push rod 5 can be returned to its original position by providing an elastic mechanism or other reset auxiliary mechanism. When the push rod 5 returns to its original position, it will exit the detection range of the dry powder detector 8. The structure is simple and effective to achieve accurate detection of whether there is a dry powder bag in the dry powder grid.

[0053] In a specific implementation of this embodiment, please refer to Figure 4 , an abutment member is provided on the top rod 5, and a first end of the abutment member abuts against the material tray 1;

[0054] A spring 6 is sleeved on the top rod 5, and the spring 6 is arranged between the second end of the abutment member and the dry powder detector 8;

[0055] The abutment is used to compress the spring 6 .

[0056] In this embodiment, an abutment piece is provided on the push rod 5, and a spring 6 is also sleeved on the push rod 5. The first end of the abutment piece abuts against the side of the through hole of the material tray 1 opposite to the dry powder grid, and the second end of the abutment piece is connected to the first end of the spring 6, and the second end of the spring 6 is connected to the dry powder detector 8; when the push rod 5 is moved toward the dry powder detector 8 by the pressure of the dry powder bag, the abutment piece can push the spring 6 to be compressed in the direction of the dry powder detector 8. At this time, the dry powder detector 8 detects that there is a dry powder bag in the dry powder grid. When the dry powder bag is separated from the push rod 5, the push rod 5 returns to its place based on the elastic force of the spring 6. At this time, the dry powder detector 8 detects that there is no dry powder bag in the dry powder grid. Therefore, the movement of the push rod 5 before and after the dry powder bag is placed is realized by the spring 6, so as to flexibly adjust the triggering and cutting off of the dry powder detector 8.

[0057] In a specific implementation of this embodiment, please refer to Figure 3 to Figure 4 , a fixing block 7 is provided outside the through hole, and a dry powder detector 8 is arranged on the fixing block;

[0058] The second end of the push rod 5 passes through the fixing block 7 and is placed in the detection area.

[0059] In this embodiment, a fixing block 7 is provided on the side of the through hole of the material tray 1 opposite to the dry powder grid, and the dry powder detector 8 is externally provided on the fixing block 7. The second end of the push rod 5 can enter the detection area of ​​the dry powder detector 8 after passing through the fixing block 7. By providing the fixing block 7, while providing a stable installation foundation, the trigger distance between the dry powder detector 8 and the push rod 5 can be flexibly adjusted.

[0060] In a specific implementation, the spring 6 may abut between the abutting member and the dry powder detector 8 , or between the abutting member and the fixing block 7 , and the specific configuration may be as required.

[0061] Preferably, the dry powder detector 8 is a photoelectric switch, which includes a receiver and a transmitter, and a detection area is formed between the receiver and the transmitter. In this detection area, the transmitter emits light in a predetermined direction and is captured by the receiver. When the top rod 5 enters the detection area and blocks the light, the light originally directed to the receiver is interrupted or weakened, triggering the receiver to generate a signal change, thereby determining that there is a dry powder bag in the dry powder grid.

[0062] In a feasible solution, the dry powder detection component or the dry powder detector 8 implemented in the dry powder detection component can also be used to detect the number of dry powder bags in the dry powder grid. In specific implementation, a counter can be configured in the dry powder detector 8. When the dry powder detector 8 is triggered to switch state by the push rod 5, a counting signal will be sent to the counter, and the counter will add one to the corresponding count. By reading the value of the counter, it can be determined how many dry powder grids on the material tray 1 contain dry powder bags, so as to facilitate timely replenishment.

[0063] In a more specific embodiment, see Figure 1 , and also includes a material taking mechanism 10, which includes a grabber and a driver; the driver is drivingly connected to the grabber; the grabber is used to grab the dry powder bag.

[0064] In a more specific embodiment, it also includes a liquid dosing pump 9 and a liquid dosing barrel 11; the liquid dosing barrel 11 is used to place the dry powder and reverse osmosis water in the dry powder bag; the liquid dosing pump 9 is connected to the liquid dosing barrel 11, and the liquid dosing pump 9 is used to transport reverse osmosis water and stir the reverse osmosis water and dry powder in the liquid dosing barrel 11.

[0065] In this embodiment, the device also includes a liquid dosing pump 9, a material taking mechanism 10 and a liquid dosing barrel 11, wherein the liquid dosing pump 9 and the liquid dosing barrel 11 are connected. In specific implementation, the dialysis concentrate is prepared by using dry powder and reverse osmosis water. The grabber in the material taking mechanism 10 can grab dry powder bags of appropriate quantity and specifications from the dry powder grid based on the detection feedback of the dry powder detection component, and transport them to the area where the liquid dosing barrel 11 is located under the drive of the driver. The dry powder bags are opened by cooperating with the unpacking device or other dry powder bag auxiliary unpacking devices and poured into the liquid dosing barrel 11. At the same time, the liquid dosing pump 9 transports reverse osmosis water into the liquid dosing barrel 11, and stirs the dry powder by the reverse osmosis water flow to accelerate the melting of the dry powder, so that accurate liquid dosing can be achieved in the liquid dosing barrel 11. It is understandable that since the material picking structure 10 needs to move above the material tray 1, it may interfere with the recognition and detection of the optical sensor and image acquisition device in front, affecting the detection effect. In the present application, the dry powder bag is detected by the structural setting of the top rod 5 and the dry powder detector 8 on the material tray 1, and the detection effect is relatively timely and stable.

[0066] In a more specific embodiment, it also includes a frame; the material tray 1, the material taking mechanism 10, the liquid dispensing barrel 11 and the liquid dispensing pump 9 are all arranged on the frame, and a solid frame structure is provided through the frame to play a supporting role.

[0067] In a more specific embodiment, a controller is further included, and the controller is respectively connected to the dry powder detection component, the material taking mechanism 10 and the liquid dosing pump 9.

[0068] In this embodiment, the controller can control multiple components to complete intelligent deployment. As an illustration of the technical effect, the controller starts the dry powder bag loading device or other dry powder bag placement auxiliary mechanism, and assembles dry powder bags of corresponding specifications in each dry powder grid, which then triggers the dry powder detection component or the dry powder detector in the dry powder detection component to detect that the dry powder in the dry powder grid is in place. The dry powder detection component sends a detection signal to the controller accordingly. When the controller determines that the dry powder of different specifications in the dry powder grid has been used up to a preset amount based on all the received detection signals, the controller feeds back a replenishment signal to the dry powder bag loading device, so that the dry powder bags can be filled according to the detected position and remaining amount of dry powder. The controller determines the required amount of dialysis concentrate according to the number of dialysis patients connected and the set dialysis process, and calculates the amount of dry powder and reverse osmosis water required for preparing dialysis concentrate. The material-taking mechanism grabs dry powder bags of appropriate specifications and quantity, opens the bags and adds them into the liquid preparation barrel. The liquid preparation pump delivers reverse osmosis water to the liquid preparation barrel, and stirs the dry powder with the reverse osmosis water flow to accelerate the melting of the dry powder, thereby accurately preparing the liquid. During the dialysis process, the controller can calculate the required amount of remaining dialysis concentrate in real time according to the number of dialysis patients connected and the changes in the process, accurately grab the required amount of dry powder, and replenish the liquid.

[0069] It should be noted that the controller provides the hardware foundation for the intelligent processing of the device. The specific data analysis and processing process involved is the method content that can be implemented by skilled technicians based on common knowledge. The detection signal, supplementary signal and other signals involved in the processing process can be set according to the needs of the execution process. The realization of the above technical effects does not rely on the improvement of the method, but on the structure of the hardware and the use of the existing hardware working method. The description of the above actual use method is only used to illustrate the beneficial effects brought by this hardware structure. The structures such as the liquid dispensing pump, the material taking mechanism and the dry powder bag feeding mechanism can refer to the existing technology and will not be repeated here.

[0070] The utility model also discloses a centralized liquid supply system, which comprises the above-mentioned dry powder conveying device.

[0071] The above is a detailed introduction to a dry powder conveying device and a centralized liquid supply system provided by the utility model. For a person skilled in the art, according to the idea of ​​the embodiments of the utility model, there may be changes in the specific implementation method and the scope of application. In summary, the content of this specification should not be understood as a limitation on the utility model.

Claims

1. A dry powder conveying device, characterized in that: include: Feed tray and dry powder detection components; The material tray is provided with dry powder grids of various specifications, and the dry powder grids are used to place dry powder bags; The dry powder detection component is used to detect whether there is a dry powder bag in the dry powder grid.

2. The dry powder conveying device according to claim 1, characterized in that: The dry powder detection assembly includes a push rod and a dry powder detector; The material tray is provided with a through hole, and the dry powder detector is arranged outside the through hole; The first end of the push rod passes through the through hole and abuts against the dry powder bag, and the second end of the push rod is placed in the detection area of ​​the dry powder detector.

3. The dry powder conveying device according to claim 2, characterized in that: The push rod is provided with an abutment member, and the first end of the abutment member abuts against the material tray; A spring is sleeved on the push rod, and the spring is arranged between the second end of the abutment member and the dry powder detector; The abutment member is used to compress the spring.

4. The dry powder conveying device according to claim 2, characterized in that: A fixing block is disposed outside the through hole, and the dry powder detector is disposed on the fixing block; The second end of the push rod passes through the fixing block and is placed in the detection area.

5. The dry powder conveying device according to claim 2, characterized in that: The dry powder detector is a photoelectric switch; The photoelectric switch includes a receiver and a transmitter, and a detection area is formed between the receiver and the transmitter.

6. The dry powder conveying device according to claim 1, characterized in that: The dry powder detection component is also used to detect the number of dry powder bags in the dry powder grid.

7. The dry powder conveying device according to claim 1, characterized in that: There are multiple dry powder grids of each specification.

8. The dry powder delivery device according to claim 1, characterized in that: It also includes a material taking mechanism; the material taking mechanism includes a material grabber and a driver; The driver is drivingly connected to the grabber; The grabber is used for grabbing the dry powder bag.

9. The dry powder conveying device according to claim 1, characterized in that: It also includes a liquid dispensing pump and a liquid dispensing barrel; The liquid preparation barrel is used to place dry powder and reverse osmosis water in the dry powder bag; The liquid dosing pump is connected to the liquid dosing barrel, and is used for conveying reverse osmosis water and stirring the reverse osmosis water and dry powder in the liquid dosing barrel.

10. A centralized liquid supply system, characterized in that: It comprises a dry powder delivery device as described in any one of claims 1 to 9.

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