Concentrated solution preparation device

Abstract

The utility model provides a concentrated solution preparation device, and relates to the technical field of medical instruments. The concentrated solution preparation device comprises a hopper, a solution preparation barrel, an uncovering mechanism, a material conveying mechanism and an unpacking mechanism, the solution preparation barrel comprises a barrel body and a barrel cover, the hopper sleeves a barrel opening of the barrel body, the barrel cover covers the hopper, the unpacking mechanism comprises a driving mechanism, a connecting rod and a cutter, and the cutter is located in the hopper and is in driving connection with the driving mechanism outside the hopper through the connecting rod; the cover opening mechanism opens a barrel cover and moves away from the upper portion of a barrel body, the material conveying mechanism grabs a dry powder bag containing hemodialysis dry powder and conveys the dry powder bag into a hopper, the driving mechanism drives a cutter to cut the dry powder bag in the hopper through a connecting rod, so that the hemodialysis dry powder in the dry powder bag falls into the barrel body, and the material conveying mechanism conveys the dry powder bag out of the hopper. And the cover opening mechanism is used for moving the barrel cover back to the upper part of the barrel body and covering the hopper with the barrel cover. On the basis, the preparation accuracy of the concentrated solution can be ensured, and the concentrated solution can be prevented from being polluted.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical devices, and particularly relates to a concentrated solution preparation device. BACKGROUND

[0002] The most common medical treatment for patients with acute and chronic kidney disease is hemodialysis, which is to remove harmful substances such as metabolic waste, excess water and electrolytes in the blood of patients through diffusion, convection and other methods, and to supplement necessary substances to maintain the acid-base balance and electrolyte balance in the body of patients. Generally, hemodialysis needs to use a liquid preparation device, which can prepare hemodialysis dry powder into concentrated solution and store it in a liquid storage barrel, and then the concentrated solution in the liquid storage barrel can be delivered to each dialysis machine through a pipeline network by a liquid supply pump, thereby realizing safe and stable supply of concentrated solution.

[0003] In the related art, the liquid preparation device usually includes an opening mechanism, which can automatically cut open a packaging bag containing hemodialysis dry powder and pour the hemodialysis dry powder in the packaging bag into a liquid preparation barrel, so as to realize automatic preparation of concentrated solution. However, the existing liquid preparation device still has the following disadvantages: the opening action of the opening mechanism is performed in an open environment (such as above the opening of the liquid preparation barrel), and due to the force of the opening action, part of the hemodialysis dry powder will inevitably be scattered, resulting in inaccurate preparation of the concentrated solution; the cutter in the opening mechanism is exposed to the open environment for a long time, which is easy to breed bacteria, so that the cutter will contaminate the hemodialysis dry powder in the subsequent opening process, thereby contaminating the prepared concentrated solution and reducing the safety of hemodialysis. Practical new type content

[0004] The present application provides a concentrated solution preparation device, which aims to solve the problem that the concentrated solution is easily contaminated and the preparation result is inaccurate when the liquid preparation device is used to prepare the concentrated solution in the related art.

[0005] To solve the above-mentioned problems existing in the related art, the application provides a concentrated liquid preparation device, which comprises a rack, a liquid preparation barrel, an uncapping mechanism, a material conveying mechanism, an opening mechanism and a hopper. The liquid preparation barrel and the material conveying mechanism are arranged on the rack. The liquid preparation barrel comprises a barrel body and a barrel cover. The hopper is sleeved at the barrel opening of the barrel body, and the barrel cover is covered on the hopper. The uncapping mechanism is arranged on the rack and close to the barrel cover, and is drivingly connected to the barrel cover. Specifically, the opening mechanism comprises a driving mechanism, a connecting rod and a cutter. The driving mechanism is arranged on the rack and close to the hopper. The hopper has a through hole which is in communication with the inside. One end of the connecting rod is arranged on the driving mechanism and is drivingly connected to the driving mechanism. The other end of the connecting rod extends into the hopper through the through hole. The cutter is located in the hopper and is arranged on the end of the connecting rod away from the driving mechanism. A sealing element is arranged in the through hole. The sealing element is sleeved on the connecting rod and abuts against the hole wall of the through hole on the side away from the connecting rod. Further, the uncapping mechanism is used to open the barrel cover and move it away from above the barrel body. The material conveying mechanism is used to grab a dry powder bag containing hemodialysis dry powder and convey it into the hopper. The driving mechanism is used to drive the cutter to cut the dry powder bag in the hopper through the connecting rod, so that the hemodialysis dry powder in the dry powder bag falls into the barrel body. The material conveying mechanism is also used to convey the dry powder bag out of the hopper and discard it. The uncapping mechanism is also used to move the barrel cover back to above the barrel body and cover it on the hopper.

[0006] In some implementations, the driving mechanism comprises a first driving mechanism and a second driving mechanism, the connecting rod comprises a first connecting rod and a second connecting rod, the cutter comprises a stabbing cutter and a cutting cutter, the through hole comprises a first through hole and a second through hole, and the sealing element comprises a first sealing element and a second sealing element. One end of the first connecting rod is arranged on the first driving mechanism and is drivingly connected to the first driving mechanism. The other end of the first connecting rod extends into the hopper through the first through hole. The stabbing cutter is located in the hopper and is arranged on the end of the first connecting rod away from the first driving mechanism. The first sealing element is arranged in the first through hole. The first sealing element is sleeved on the first connecting rod and abuts against the hole wall of the first through hole on the side away from the first connecting rod. One end of the second connecting rod is arranged on the second driving mechanism and is drivingly connected to the second driving mechanism. The other end of the second connecting rod extends into the hopper through the second through hole. The cutting cutter is located in the hopper and is arranged on the end of the second connecting rod away from the second driving mechanism. The second sealing element is arranged in the second through hole. The second sealing element is sleeved on the second connecting rod and abuts against the hole wall of the second through hole on the side away from the second connecting rod. Specifically, the first driving mechanism is used to drive the stabbing cutter to stab into the dry powder bag in the hopper through the first connecting rod. The second driving mechanism is used to drive the cutting cutter to cut the dry powder bag horizontally in the hopper through the second connecting rod after the stabbing cutter stabs into the dry powder bag. The material conveying mechanism is also used to drive the dry powder bag to rise after the cutting cutter cuts the dry powder bag horizontally, so that the stabbing cutter cuts the dry powder bag longitudinally in the hopper.

[0007] In some implementations, the sealing element comprises a sealing ring. The sealing ring is arranged in the through hole. The sealing ring is sleeved on the connecting rod and abuts against the hole wall of the through hole on the side away from the connecting rod.

[0008] In some implementations, the sealing member includes a sealing ring, the sealing ring is arranged in the through hole and sleeved on the connecting rod, and a ring-shaped insert piece is formed on a side of the sealing ring away from the connecting rod and surrounds a ring core. A ring-shaped insert slot is formed on a hole wall of the through hole and surrounds the connecting rod, and the ring-shaped insert piece is inserted into the ring-shaped insert slot.

[0009] In some implementations, the sealing member includes a main sealing ring and two auxiliary sealing rings, the two auxiliary sealing rings are arranged on opposite sides of the main sealing ring, the main sealing ring and the two auxiliary sealing rings are coaxial, the main sealing ring and the two auxiliary sealing rings are sleeved on the connecting rod, the auxiliary sealing rings are larger in size than the main sealing ring, the main sealing ring is located in the through hole, the two auxiliary sealing rings are located inside and outside the hopper respectively, and the two auxiliary sealing rings abut against the inner wall and the outer wall of the hopper respectively on a side close to the main sealing ring. In one or more of the implementations, a side of the main sealing ring away from the connecting rod abuts against a hole wall of the through hole; or, the main sealing ring is spaced apart from the hole wall of the through hole to form a gap, and a sealing material is filled in the gap.

[0010] In some implementations, the concentrated solution preparation device further includes a filter screen, the filter screen is arranged in the barrel body and close to the barrel opening, and is used to allow the hemodialysis dry powder to pass through and block the fragments falling from the dry powder bag when the dry powder bag is cut open.

[0011] In some implementations, in addition to the structures mentioned above, the concentrated solution preparation device further includes a disinfectant tank, a disinfectant pipe, a disinfectant pump, and a disinfectant nozzle, the disinfectant pump and the disinfectant tank are arranged on the rack, the barrel body has a disinfection hole communicating with the inside, the disinfection hole is close to the barrel opening, one end of the disinfectant pipe is connected to the disinfectant tank through the disinfectant pump, the other end of the disinfectant pipe extends into the barrel body through the disinfection hole, and the disinfectant nozzle is located in the barrel body and connected to the end of the disinfectant pipe away from the disinfectant tank. Among them, the disinfectant tank is used to store disinfectant; the disinfectant pump is used to pump the disinfectant from the disinfectant tank to the disinfectant nozzle through the disinfectant pipe; and the disinfectant nozzle is used to spray the disinfectant on the cutting tool, the inner wall of the hopper, and the barrel body.

[0012] In some implementations, in addition to the structures mentioned above, the concentrated solution preparation device further includes a water storage tank, a water pipe, a water pump, and a cleaning nozzle, the water pump and the water storage tank are arranged on the rack, the barrel body has a cleaning hole communicating with the inside, the cleaning hole is close to the barrel opening, one end of the water pipe is connected to the water storage tank through the water pump, the other end of the water pipe extends into the barrel body through the cleaning hole, and the cleaning nozzle is located in the barrel body and connected to the end of the water pipe away from the water storage tank. Among them, the water storage tank is used to store clean water; the water pump is used to pump the clean water from the water storage tank to the cleaning nozzle through the water pipe; and the cleaning nozzle is used to spray the clean water on the cutting tool, the inner wall of the hopper, and the barrel body.

[0013] In some implementations, the hopper includes a lower hopper and an upper hopper, the lower hopper is sleeved at the barrel opening of the barrel body, the upper hopper is sleeved on the lower hopper, the barrel cover is covered on the upper hopper, the size of the upper hopper is smaller than that of the lower hopper, the through hole is located on the lower hopper, and the cutter is located in the lower hopper.

[0014] For the concentrated liquid preparation device provided by the application, the hopper, the liquid preparation barrel, the cover opening mechanism, the material conveying mechanism and the bag opening mechanism are composed, the liquid preparation barrel includes a barrel body and a barrel cover, the hopper is sleeved at the barrel opening of the barrel body, the barrel cover is covered on the hopper, the bag opening mechanism includes a driving mechanism, a connecting rod and a cutter, the hopper has a through hole in communication with the inside, one end of the connecting rod is provided on the driving mechanism and is drivingly connected with the driving mechanism, the other end of the connecting rod extends into the hopper through the through hole, the cutter is located in the hopper and is provided on the end of the connecting rod away from the driving mechanism, a sealing element is arranged in the through hole, the sealing element is sleeved on the connecting rod and abuts against the hole wall of the through hole on the side away from the connecting rod; in actual application, the cover opening mechanism can open the barrel cover and move it away from above the barrel body, the material conveying mechanism can grab the dry powder bag containing hemodialysis dry powder and convey it into the hopper, the driving mechanism can drive the cutter to cut the dry powder bag in the hopper through the connecting rod, so that the hemodialysis dry powder in the dry powder bag falls into the barrel body, the material conveying mechanism can also convey the dry powder bag out of the hopper and discard it, and the cover opening mechanism can also move the barrel cover back to above the barrel body and cover it on the hopper. As can be seen, in the process of preparing the concentrated liquid, the application places the dry powder bag in the hopper and cuts the dry powder bag in the hopper, which makes the hemodialysis dry powder in the dry powder bag not fall outside, but directly fall into the barrel body or slide into the barrel body along the inner wall of the hopper, thereby improving the accuracy of the concentrated liquid preparation result in the liquid preparation barrel, ensuring the quality of the concentrated liquid, and reducing the cleaning difficulty of the device; in addition, in the application, when the barrel cover is covered on the hopper, the barrel cover and the hopper enclose a closed space, and the barrel cover is mostly covered on the hopper, only when the dry powder bag enters or exits the hopper, the barrel cover is temporarily opened, which makes the cutter of the bag opening mechanism mostly in the closed space, instead of being exposed in the open environment for a long time as in the traditional scheme, thereby inhibiting the breeding of bacteria on the cutter, avoiding the pollution of the prepared concentrated liquid due to the breeding of bacteria on the cutter, and further improving the safety of hemodialysis. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the related art or the embodiments of the application, the following will briefly introduce the drawings needed to be used in the description of the related art or the embodiments of the application. Obviously, the drawings in the following description are only some embodiments of the application, and not all embodiments. Those skilled in the art can also obtain other drawings according to these drawings without creating any inventive work.

[0016] Figure 1A front view of the concentrated liquid preparation device provided by the embodiment of the present application;

[0017] Figure 2 A side view of the concentrated liquid preparation device provided by the embodiment of the present application;

[0018] Figure 3 An assembly view of the hopper, liquid preparation barrel and cover opening and bag opening mechanism provided by the embodiment of the present application;

[0019] Figure 4 A sectional view along the direction of A-A of the embodiment of the present application; Figure 3

[0020] Figure 5 A partial enlarged view at B of the embodiment of the present application; Figure 3

[0021] Figure 6 A top view of the embodiment of the present application; Figure 3

[0022] The marks in each of the above figures respectively represent:

[0023] 1-frame, 2-material tray, 3-liquid preparation barrel, 4-cover opening mechanism, 5-material conveying mechanism, 6-bag opening mechanism, 7-hopper, 31-barrel body, 32-barrel cover, 61-driving mechanism, 62-linkage, 63-cutter, 64-seal, 611-first driving mechanism, 612-second driving mechanism, 621-first linkage, 622-second linkage, 631-inserting cutter, 632-cutting cutter, 641-first seal, 642-second seal, 71-lower hopper, 72-upper hopper, 711-through hole, 7111-first through hole, 7112-second through hole. DETAILED DESCRIPTION

[0024] ​​​In the related art, the opening mechanism of the liquid preparation device can automatically cut open the packaging bag containing hemodialysis dry powder and pour the hemodialysis dry powder in the packaging bag into the liquid preparation barrel, so as to realize automatic preparation of the concentrated solution. However, the existing liquid preparation device still has the following disadvantages: the opening action of the opening mechanism is carried out in an open environment, and due to the force of the opening action, part of the hemodialysis dry powder will inevitably be scattered, resulting in inaccurate preparation of the concentrated solution in the liquid preparation barrel, which not only reduces the quality of the concentrated solution, but also increases the cleaning difficulty of the device; the cutter of the opening mechanism is exposed to the open environment for a long time, and bacteria are easily bred thereon, so that the cutter will contaminate the hemodialysis dry powder in the subsequent opening process, thereby contaminating the prepared concentrated solution and further reducing the safety of hemodialysis; the cutter of the opening mechanism is easy to leave hemodialysis dry powder, which often needs to be cleaned manually, which will greatly increase the workload of the operator. Therefore, the present application proposes a concentrated solution preparation device in the following embodiments to solve the above-mentioned disadvantages in the related art.

[0025] In order to make the purpose, technical scheme and advantages of the present application more obvious and easy to understand, the present application will be described clearly and completely below in combination with the embodiments of the present application and the corresponding drawings, wherein the same or similar reference signs represent the same or similar elements or elements with the same or similar functions throughout. It should be understood that the embodiments of the present application described below are only used to explain the present application and do not limit the present application, i.e. all other embodiments obtained by those skilled in the art without creative labor based on the various embodiments of the present application are within the scope of protection of the present application. In addition, the technical features involved in each embodiment of the present application described below can be combined with each other as long as they do not conflict with each other.

[0026] Please refer to Figures 1 to 6 , Figure 1 is a front view of the concentrated solution preparation device, Figure 2 is a side view of the concentrated solution preparation device, Figure 3 is an assembly view of the hopper, liquid preparation barrel and cap opening and bag opening mechanism, Figure 4 is a sectional view along the direction A-A in Figure 3 is a sectional view along the direction B-B in Figure 5 is an enlarged view of part B in Figure 3 is an enlarged view of part C in Figure 6 is an enlarged view of part D in Figure 3The top view of the embodiment. The embodiment provides a concentrated liquid preparation device, which comprises a rack 1, a tray 2, a hopper 7, a preparation barrel 3, an uncapping mechanism 4, a material conveying mechanism 5 and an opening bag mechanism 6. The preparation barrel 3 and the tray 2 are oppositely arranged on the rack 1, the material conveying mechanism 5 is arranged on the rack 1 and above the tray 2, the preparation barrel 3 comprises a barrel body 31 and a barrel cover 32, the hopper 7 is sleeved at the barrel opening of the barrel body 31, the barrel cover 32 is covered on the hopper 7, the uncapping mechanism 4 is arranged on the rack 1 and close to the barrel cover 32, and the uncapping mechanism 4 is drivingly connected to the barrel cover 32. The opening bag mechanism 6 comprises a driving mechanism 61, a connecting rod 62 and a cutter 63. The driving mechanism 61 is arranged on the rack 1 and close to the hopper 7. A through hole 711 is formed in the hopper 7 and communicates with the inside of the hopper 7. One end of the connecting rod 62 is arranged on the driving mechanism 61 and drivingly connected to the driving mechanism 61. The other end of the connecting rod 62 extends into the hopper 7 through the through hole 711. The cutter 63 is located in the hopper 7 and arranged on the end of the connecting rod 62 away from the driving mechanism 61. A sealing element 64 is arranged in the through hole 711 and sleeved on the connecting rod 62 and abuts against the hole wall of the through hole 711 away from the connecting rod 62.

[0027] Specifically, the tray 2 is used for placing a plurality of dry powder bags containing hemodialysis dry powder; the uncapping mechanism 4 is used for opening the barrel cover 32 and moving the barrel cover 32 away from above the barrel body 31; the material conveying mechanism 5 is used for grabbing the dry powder bag from the tray 2 and conveying the grabbed dry powder bag into the hopper 7; the driving mechanism 61 is used for driving the cutter 63 to cut the dry powder bag in the hopper 7 through the connecting rod 62, so that the hemodialysis dry powder in the dry powder bag falls into the barrel body 31; the material conveying mechanism 5 is also used for conveying the dry powder bag to the outside of the hopper 7 for discarding and returning to above the tray 2 after discarding the dry powder bag; the uncapping mechanism 4 is also used for moving the barrel cover 32 back to above the barrel body 31 and covering the barrel cover 32 on the hopper 7. In addition, it should be noted that the dry powder bag is not limited to being placed on the tray 2. Those skilled in the art should understand that the dry powder bag can actually be placed at any position convenient for the material conveying mechanism 5 to grab, such as a conveyor belt, a desktop adjacent to the rack 1, a platform arranged on the rack 1, etc. The specific position can be set according to actual needs, and the present application does not make a unique limitation thereon. However, the present application will take the dry powder bag placed on the tray 2 as an example for relevant description.

[0028] That is, the preparation process of the concentrated solution is: the opening mechanism 4 first opens the barrel cover 32, and then moves the barrel cover 32 away from above the barrel body 31; after the opening mechanism 4 moves the barrel cover 32 away from above the barrel body 31, the material conveying mechanism 5 first grabs the dry powder bag from the tray 2, and then conveys the grabbed dry powder bag into the hopper 7; after the material conveying mechanism 5 conveys the dry powder bag into the hopper 7, the driving mechanism 61 drives the cutter 63 in the hopper 7 to cut the dry powder bag, so that the hemodialysis dry powder in the dry powder bag falls into the barrel body 31 or slides into the barrel body 31 along the inner wall of the hopper 7; after the hemodialysis dry powder in the dry powder bag falls into the barrel body 31, the material conveying mechanism 5 first conveys the dry powder bag to a designated position (such as a waste bag barrel arranged on the rack 1) outside the hopper 7 and then returns to above the tray 2; after the material conveying mechanism 5 conveys the dry powder bag outside the hopper 7, the opening mechanism 4 first moves the barrel cover 32 back to above the barrel body 31, and then covers the barrel cover 32 on the hopper 7. It can be understood that the above process is only to put the hemodialysis dry powder in a single dry powder bag into the liquid preparation barrel 3, but in actual application, it may be necessary to put the hemodialysis dry powder in multiple dry powder bags into the liquid preparation barrel 3, so the above process is cycled. The number of cycles (i.e., how many dry powder bags of hemodialysis dry powder are to be put into the liquid preparation barrel 3) can be set according to actual needs, and the present application does not make a unique limitation.

[0029] As can be seen from the above, in the process of preparing the concentrated solution, the present embodiment places the dry powder bag inside the hopper 7 and cuts the dry powder bag in the hopper 7, which makes the hemodialysis dry powder in the dry powder bag not fall outside, but directly fall into the barrel body 31 or slide into the barrel body 31 along the inner wall of the hopper 7, thereby improving the accuracy of the concentrated solution preparation result in the liquid preparation barrel 3, ensuring the quality of the concentrated solution, and reducing the cleaning difficulty of the device. In the present embodiment, when the barrel cover 32 is covered on the hopper 7, the barrel cover 32 will form an enclosed space with the hopper 7, and the barrel cover 32 is mostly covered on the hopper 7, only when the dry powder bag enters or exits the hopper 7, the barrel cover 32 will be opened for a short time, which makes the cutter 63 of the opening mechanism 6 mostly in the enclosed space, rather than being exposed in the open environment for a long time as in the traditional scheme, thereby inhibiting the growth of bacteria on the cutter 63, which can avoid the pollution of the prepared concentrated solution due to the growth of bacteria on the cutter 63, thereby improving the safety of hemodialysis. In addition, it should be understood that although the hopper 7 is provided with a through hole 711 communicating with the inside for the connecting rod 62 to extend into the hopper 7, since the through hole 711 is provided with a sealing element 64 sleeved on the connecting rod 62, the through hole 711 has better sealing performance, so the hemodialysis dry powder scattered from the dry powder bag will not leak outside the hopper 7 after cutting the dry powder bag in the hopper 7.

[0030] In some embodiments, still referring toFigures 1 to 6 The driving mechanism 61 comprises a first driving mechanism 611 and a second driving mechanism 612, the connecting rod 62 comprises a first connecting rod 621 and a second connecting rod 622, the cutter 63 comprises an insert cutter 631 and a cutting cutter 632, the through hole 711 comprises a first through hole 7111 and a second through hole 7112, and the sealing element 64 comprises a first sealing element 641 and a second sealing element 642.

[0031] Specifically, one end of the first connecting rod 621 is arranged on the first driving mechanism 611 and is drivingly connected with the first driving mechanism 611, the other end of the first connecting rod 621 extends into the hopper 7 through the first through hole 7111, the insert cutter 631 is located in the hopper 7 and is arranged on the end of the first connecting rod 621 away from the first driving mechanism 611, the first sealing element 641 is arranged in the first through hole 7111, the first sealing element 641 is sleeved on the first connecting rod 621 and abuts against the hole wall of the first through hole 7111 away from the first connecting rod 621; one end of the second connecting rod 622 is arranged on the second driving mechanism 612 and is drivingly connected with the second driving mechanism 612, the other end of the second connecting rod 622 extends into the hopper 7 through the second through hole 7112, the cutting cutter 632 is located in the hopper 7 and is arranged on the end of the second connecting rod 622 away from the second driving mechanism 612, the second sealing element 642 is arranged in the second through hole 7112, and the second sealing element 642 is sleeved on the second connecting rod 622 and abuts against the hole wall of the second through hole 7112 away from the second connecting rod 622.

[0032] On this basis, the first driving mechanism 611 is configured to drive the stabbing knife 631 to stab into the dry powder bag in the hopper 7 through the first connecting rod 621; the second driving mechanism 612 is configured to drive the cutting knife 632 to transversely cut the dry powder bag in the hopper 7 through the second connecting rod 622 after the stabbing knife 631 stabs into the dry powder bag; and the material conveying mechanism 5 is further configured to drive the dry powder bag to ascend after the cutting knife 632 transversely cuts the dry powder bag, so that the stabbing knife 631 longitudinally cuts the dry powder bag in the hopper 7. That is to say, after the material conveying mechanism 5 conveys the dry powder bag into the hopper 7, the unpacking process of the unpacking mechanism 6 on the dry powder bag is as follows: the first driving mechanism 611 drives the stabbing knife 631 to stab into the dry powder bag in the hopper 7 through the first connecting rod 621, at this time, the stabbing knife 631 only stabs into the dry powder bag, and the opening on the dry powder bag is relatively small, so that most of the hemodialysis dry powder is still in the dry powder bag; after the stabbing knife 631 stabs into the dry powder bag, the second driving mechanism 612 drives the cutting knife 632 to transversely cut the dry powder bag in the hopper 7 through the second connecting rod 622, at this time, the dry powder bag is cut by the cutting knife 632 to form a relatively large opening (which can be located above the stabbing position of the stabbing knife 631, or below the stabbing position of the stabbing knife 631), and part of the hemodialysis dry powder in the dry powder bag will be separated from the dry powder bag and scattered into the barrel 31; after the cutting knife 632 transversely cuts the dry powder bag, the material conveying mechanism 5 drives the dry powder bag to move in the direction of exiting the hopper 7 (i.e., drives the dry powder bag to ascend), and in the process of ascending of the dry powder bag, since the stabbing knife 631 is fixed, the stabbing knife 631 will longitudinally cut the dry powder bag, and at the same time, the bottom of the dry powder bag will be turned upward, and finally, the hemodialysis dry powder in the dry powder bag will be completely poured into the barrel 31.

[0033] In some embodiments, still referring to Figures 1 to 6 The sealing member 64 comprises a sealing ring (not shown in the figure), which is arranged in the through hole 711, and abuts against the hole wall of the through hole 711 on the side away from the connecting rod 62, so as to ensure the sealing performance of the through hole 711. It should be noted that the sealing ring can be made of materials commonly used in the art and having good sealing performance, such as nitrile rubber (NBR), fluororubber (FKM), silicone rubber (VMQ), natural rubber (NR), polytetrafluoroethylene (PTFE), nylon (PA), copper alloy, stainless steel, etc., and the specific material can be selected according to actual needs, which is not uniquely limited in the present application.

[0034] Of course, the form of the sealing member 64 is not limited to a single sealing ring. In other embodiments, the sealing member 64 can also have other forms. For example, the sealing member 64 includes a sealing ring which is arranged in the through hole 711 and sleeved on the connecting rod 62, and an annular insert piece is formed on the side of the sealing ring away from the connecting rod 62. An annular insert slot (not shown in the figure) which surrounds the connecting rod 62 is formed on the hole wall of the through hole 711. The annular insert piece is inserted into the annular insert slot, so as to ensure the sealing property of the through hole 711. In addition, it should be noted that the part of the sealing ring away from the connecting rod 62 can be spaced from the hole wall of the through hole 711 or abut against the hole wall of the through hole 711. However, the sealing property is the best when the part of the sealing ring away from the connecting rod 62 abuts against the hole wall of the through hole 711, so it is preferred that the part of the sealing ring away from the connecting rod 62 abut against the hole wall of the through hole 711.

[0035] For another example, the sealing member 64 includes a main sealing ring (not shown in the figure) and two auxiliary sealing rings (not shown in the figure). The two auxiliary sealing rings are arranged on the opposite sides of the main sealing ring respectively. The main sealing ring and the two auxiliary sealing rings are coaxial. The main sealing ring and the two auxiliary sealing rings are sleeved on the connecting rod 62. The size of the auxiliary sealing ring is greater than that of the main sealing ring. The main sealing ring is located in the through hole 711. The two auxiliary sealing rings are located in and out of the hopper 7 respectively. The side of the two auxiliary sealing rings close to the main sealing ring abut against the inner wall and the outer wall of the hopper 7 respectively, so as to ensure the sealing property of the through hole 711. In addition, it should be noted that the side of the main sealing ring away from the connecting rod 62 can abut against the hole wall of the through hole 711 or be spaced from the hole wall of the through hole 711 to form a gap. However, the sealing property is the best when the side of the main sealing ring away from the connecting rod 62 abuts against the hole wall of the through hole 711, so it is preferred that the side of the main sealing ring away from the connecting rod 62 abut against the hole wall of the through hole 711. In addition, it should be noted that when the side of the main sealing ring away from the connecting rod 62 is spaced from the hole wall of the through hole 711 to form a gap, a sealing material can be filled in the gap to compensate for the insufficient sealing property of the main sealing ring when it is spaced from the hole wall of the through hole 711. The sealing material filled in the gap can be a material with good sealing property and commonly used in the art, such as a carbon fiber sealing material, a glass fiber sealing material, etc. The specific material can be selected according to actual needs, and the present application does not make a unique limitation in this regard.

[0036] In some embodiments, still referring to Figures 1 to 6In addition to the above-mentioned structure, the concentrate preparation device further comprises a filter screen (not shown in the figure) arranged in the barrel body 31 and close to the barrel opening, which is used to allow the hemodialysis dry powder to pass through and block the fragments falling from the dry powder bag when it is opened. It can be understood that when the bag opening mechanism 6 opens the dry powder bag, the dry powder bag is likely to generate fragments when it is cut open by the cutter 63. If these fragments fall into the barrel body 31, they will inevitably contaminate the concentrate in the barrel body 31. Therefore, the present application is provided with a filter screen close to the barrel opening in the barrel body 31. In this case, the hemodialysis dry powder scattered from the dry powder bag can pass through the filter screen into the barrel body 31, while the fragments falling from the dry powder bag are blocked by the filter screen, so that the fragments of the dry powder bag can be prevented from entering the barrel body 31 and contaminating the concentrate.

[0037] In some embodiments, still referring to Figures 1 to 6 In addition to the above-mentioned structure, the concentrate preparation device further comprises a disinfectant tank (not shown in the figure), an infusion tube (not shown in the figure), an infusion pump (not shown in the figure) and a disinfectant nozzle (not shown in the figure). The infusion pump and the disinfectant tank are arranged on the rack 1. The barrel body 31 has a disinfection hole (not shown in the figure) communicating with the inside, which is close to the barrel opening of the barrel body 31. One end of the infusion tube is connected to the disinfectant tank through the infusion pump, and the other end extends into the barrel body 31 through the disinfection hole. The disinfectant nozzle is located in the barrel body 31 and is connected to the end of the infusion tube away from the disinfectant tank. In addition, it should be noted that in order to ensure the sealing performance of the disinfection hole, a sealing member 64 can be arranged in the disinfection hole to improve the sealing performance of the disinfection hole.

[0038] Specifically, the disinfectant tank is used to store disinfectant; the infusion pump is used to pump disinfectant from the disinfectant tank to the disinfectant nozzle through the infusion tube; and the disinfectant nozzle is used to spray disinfectant onto the cutter 63 and the inner wall of the hopper 7 and the barrel body 31. That is to say, the concentrate preparation device of the present application has a disinfection function, which can not only disinfect the barrel body 31, but also disinfect the cutter 63 and the hopper 7. When disinfecting, the infusion pump can be started to pump the disinfectant in the disinfectant tank to the disinfectant nozzle in the barrel body 31 through the infusion pump and the infusion tube, and then the disinfectant nozzle can be used to spray disinfectant onto the cutter 63 and the inner wall of the hopper 7 and the barrel body 31, so that the cutter 63 and the hopper 7 are disinfected at the same time when the barrel body 31 is disinfected, which can effectively inhibit the breeding of bacteria on the cutter 63 and the inner wall of the hopper 7 and the barrel body 31, avoid contamination of the concentrate, and ensure the safety of hemodialysis.

[0039] In some embodiments, still referring to Figures 1 to 6In addition to the above-mentioned structure, the concentrated solution preparation device further comprises a water storage tank (not shown in the figure), a water delivery pipe (not shown in the figure), a water delivery pump (not shown in the figure), and a cleaning nozzle (not shown in the figure). The water delivery pump and the water storage tank are arranged on the rack 1. The barrel body 31 has a cleaning hole (not shown in the figure) in communication with the inside of the barrel body 31. The cleaning hole is close to the barrel opening of the barrel body 31. One end of the water delivery pipe is connected to the water storage tank through the water delivery pump, and the other end of the water delivery pipe extends into the barrel body 31 through the cleaning hole. The cleaning nozzle is located in the barrel body 31 and is connected to the end of the water delivery pipe away from the water storage tank. In addition, it should be noted that, in order to ensure the sealing performance of the cleaning hole, a sealing member 64 can be arranged in the cleaning hole, so as to improve the sealing performance of the cleaning hole by using the sealing member 64.

[0040] Specifically, the water storage tank is used to store clean water. The water delivery pump is used to pump the clean water in the water storage tank to the cleaning nozzle through the water delivery pipe. The cleaning nozzle is used to spray the clean water on the cutting tool 63 and the inner wall of the barrel body 31 and the hopper 7. That is to say, the concentrated solution preparation device has a cleaning function, which can not only clean the barrel body 31, but also clean the cutting tool 63 and the hopper 7. When cleaning, the water delivery pump can be started to pump the clean water in the water storage tank to the cleaning nozzle in the barrel body 31 through the water delivery pump and the water delivery pipe, and then the cleaning nozzle can be used to spray the clean water on the cutting tool 63 and the inner wall of the barrel body 31 and the hopper 7, so as to clean the cutting tool 63 and the hopper 7 and the inner wall of the barrel body 31 at the same time. This can effectively remove the residual hemodialysis dry powder on the cutting tool 63 and the hopper 7 and the inner wall of the barrel body 31, greatly reduce the workload of the operator, and reduce the labor cost compared with the traditional manual cleaning. Of course, the cleaning function of the concentrated solution preparation device is not limited to removing the residual hemodialysis dry powder on the cutting tool 63 and the hopper 7 and the inner wall of the barrel body 31. After the cutting tool 63, the hopper 7, and the barrel body 31 are sterilized, the cleaning function can also be used to remove the residual sterilizing liquid on the cutting tool 63 and the hopper 7 and the inner wall of the barrel body 31.

[0041] In some embodiments, still referring to Figures 1 to 6The hopper 7 comprises a lower hopper 71 and an upper hopper 72. The lower hopper 71 is sleeved on the barrel opening of the barrel body 31. The upper hopper 72 is sleeved on the lower hopper 71. The barrel cover 32 is covered on the upper hopper 72. The through hole 711 is located on the lower hopper 71. The cutter 63 is located in the lower hopper 71. In addition, it should be noted that a sealing ring is arranged between the lower hopper 71 and the barrel body 31, between the lower hopper 71 and the upper hopper 72, and between the upper hopper 72 and the barrel cover 32, so as to improve the sealing performance among the hopper 7, the barrel cover 32 and the barrel body 31. It should be further noted that the size of the upper hopper 72 is preferably smaller than that of the lower hopper 71, so as to reduce the contact space between the hopper 7 and the outside when the hopper 7 is separated from the barrel cover 32, thereby ensuring the sealing performance when the hopper 7 is separated from the barrel cover 32, and avoiding the pollution of the cutter 63 in the hopper 7 by the outside.

[0042] The above embodiment is only a preferred implementation of the present application, and is not the only limitation of the concentrated liquid preparation device; based on the above embodiment, those skilled in the art can flexibly set it according to the actual application scene. It can be understood that through the implementation of the above embodiment of the present application, the concentrated liquid preparation device is composed of the tray 2, the hopper 7, the liquid preparation barrel 3, the cover opening mechanism 4, the material conveying mechanism 5 and the bag opening mechanism 6, the liquid preparation barrel 3 includes a barrel body 31 and a barrel cover 32, the hopper 7 is sleeved at the barrel opening of the barrel body 31, and the barrel cover 32 is covered on the hopper 7, the bag opening mechanism 6 includes a driving mechanism 61, a connecting rod 62 and a cutter 63, the hopper 7 has a through hole 711 communicating with the inside, one end of the connecting rod 62 is arranged on the driving mechanism 61 and is drivingly connected with the driving mechanism 61, the other end of the connecting rod 62 extends into the hopper 7 through the through hole 711, the cutter 63 is located in the hopper 7 and is arranged on the end of the connecting rod 62 away from the driving mechanism 61, a sealing element 64 is arranged in the through hole 711, and the sealing element 64 is sleeved on the connecting rod 62 and abuts against the hole wall of the through hole 711 away from the connecting rod 62; in actual application, the cover opening mechanism 4 can open the barrel cover 32 and move it away from above the barrel body 31, the material conveying mechanism 5 can grab the dry powder bag from the tray 2 and convey it into the hopper 7, the driving mechanism 61 can drive the cutter 63 to cut the dry powder bag in the hopper 7 through the connecting rod 62, so that the hemodialysis dry powder in the dry powder bag falls into the barrel body 31, the material conveying mechanism 5 can also convey the dry powder bag to the outside of the hopper 7 and discard it and return to above the tray 2, and the cover opening mechanism 4 can also move the barrel cover 32 back to above the barrel body 31 and cover it on the hopper 7. As can be seen, in the process of preparing the concentrated liquid, the present application places the dry powder bag in the hopper 7 and cuts the dry powder bag in the hopper 7, so that the hemodialysis dry powder in the dry powder bag will not be spilled outside, but will directly fall into the barrel body 31 or slide into the barrel body 31 along the inner wall of the hopper 7, thereby improving the accuracy of the concentrated liquid preparation result in the liquid preparation barrel 3, ensuring the quality of the concentrated liquid, and reducing the cleaning difficulty of the device; in addition, in the present application, when the barrel cover 32 is covered on the hopper 7, the barrel cover 32 and the hopper 7 enclose a closed space, and the barrel cover 32 is mostly covered on the hopper 7, and only when the dry powder bag enters and exits the hopper 7, the barrel cover 32 will be opened for a short time, so that the cutter 63 of the bag opening mechanism 6 is mostly in the closed space, and will not be exposed in the open environment for a long time like the traditional scheme, thereby inhibiting the breeding of bacteria on the cutter 63, avoiding the pollution of the prepared concentrated liquid due to the breeding of bacteria on the cutter 63, and further improving the safety of hemodialysis.

[0043] It should be noted that the several embodiments shown above in this application are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. It should also be noted that in the textual description of this application, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply such an actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements may include not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus; and, without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0044] Furthermore, those skilled in the art can implement or use this application by practicing the several embodiments shown above. Various modifications to the embodiments shown above will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments not shown without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the several embodiments shown above, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A concentrate dispensing device characterized by, The device comprises a rack, a liquid preparation barrel, an uncapping mechanism, a material conveying mechanism, an opening bag mechanism and a hopper, the liquid preparation barrel and the material conveying mechanism are arranged on the rack, the liquid preparation barrel comprises a barrel body and a barrel cover, the hopper is sleeved at the barrel opening of the barrel body, the barrel cover is covered on the hopper, the uncapping mechanism is arranged on the rack and close to the barrel cover, and the uncapping mechanism is drivingly connected to the barrel cover; The opening bag mechanism comprises a driving mechanism, a connecting rod and a cutter, the driving mechanism is arranged on the rack and close to the hopper, the hopper has a through hole in communication with the inside, one end of the connecting rod is arranged on the driving mechanism and drivingly connected with the driving mechanism, the other end of the connecting rod extends into the hopper through the through hole, the cutter is located in the hopper and arranged on the other end of the connecting rod away from the driving mechanism, and a sealing element is arranged in the through hole and sleeved on the connecting rod and abuts against the hole wall of the through hole away from the connecting rod; The uncapping mechanism is used for opening the barrel cover and moving it away from above the barrel body, the material conveying mechanism is used for grabbing a dry powder bag containing hemodialysis dry powder and conveying it into the hopper, the driving mechanism is used for driving the cutter to cut the dry powder bag in the hopper through the connecting rod, so that the hemodialysis dry powder in the dry powder bag falls into the barrel body, and the material conveying mechanism is also used for conveying the dry powder bag out of the hopper and discarding it, and the uncapping mechanism is also used for moving the barrel cover back to above the barrel body and covering it on the hopper.

2. The concentrate formulation device of claim 1, wherein, The driving mechanism comprises a first driving mechanism and a second driving mechanism, the connecting rod comprises a first connecting rod and a second connecting rod, the cutter comprises a plug cutter and a cutter, the through hole comprises a first through hole and a second through hole, and the sealing element comprises a first sealing element and a second sealing element; One end of the first connecting rod is arranged on the first driving mechanism and drivingly connected with the first driving mechanism, the other end of the first connecting rod extends into the hopper through the first through hole, the plug cutter is located in the hopper and arranged on the other end of the first connecting rod away from the first driving mechanism, the first sealing element is arranged in the first through hole and sleeved on the first connecting rod and abuts against the hole wall of the first through hole away from the first connecting rod; One end of the second connecting rod is arranged on the second driving mechanism and drivingly connected with the second driving mechanism, the other end of the second connecting rod extends into the hopper through the second through hole, the cutter is located in the hopper and arranged on the other end of the second connecting rod away from the second driving mechanism, the second sealing element is arranged in the second through hole and sleeved on the second connecting rod and abuts against the hole wall of the second through hole away from the second connecting rod; The first driving mechanism is configured to drive the stabbing knife to stab into the dry powder bag in the hopper through the first connecting rod; the second driving mechanism is configured to drive the cutting knife to cut the dry powder bag transversely in the hopper through the second connecting rod after the stabbing knife stabs into the dry powder bag; and the material conveying mechanism is further configured to drive the dry powder bag to rise after the cutting knife cuts the dry powder bag transversely, so that the stabbing knife cuts the dry powder bag longitudinally in the hopper.

3. The concentrate formulation device of claim 1, wherein, The sealing member comprises a sealing ring arranged in the through hole and sleeved on the connecting rod, and a side of the sealing ring away from the connecting rod abuts against the hole wall of the through hole.

4. The concentrate formulation device of claim 1, wherein, The sealing member comprises a sealing ring arranged in the through hole and sleeved on the connecting rod, and a side of the sealing ring away from the connecting rod is formed with a ring-shaped insert piece around the ring core, and the hole wall of the through hole is provided with a ring-shaped insert groove around the connecting rod, and the ring-shaped insert piece is inserted into the ring-shaped insert groove.

5. The concentrate formulation device of claim 1, wherein, The sealing member comprises a main sealing ring and two auxiliary sealing rings, the two auxiliary sealing rings are arranged on the opposite sides of the main sealing ring respectively, the main sealing ring and the two auxiliary sealing rings are coaxial, the main sealing ring and the two auxiliary sealing rings are sleeved on the connecting rod, the auxiliary sealing rings are larger in size than the main sealing ring, the main sealing ring is located in the through hole, the two auxiliary sealing rings are located in the hopper and outside the hopper respectively, and the sides of the two auxiliary sealing rings close to the main sealing ring abut against the inner wall and the outer wall of the hopper respectively.

6. The concentrate formulation device of claim 5, wherein, The main sealing ring abuts against the hole wall of the through hole away from the connecting rod, or the main sealing ring is spaced from the hole wall of the through hole to form a gap, and the gap is filled with a sealing material.

7. The concentrate formulation device of claim 1, wherein, The concentrated solution preparation device further comprises a filter screen arranged in the barrel body and close to the barrel opening, which is configured to allow the hemodialysis dry powder to pass through and block the fragments falling off when the dry powder bag is cut open.

8. The concentrate formulation device of claim 1, wherein, The concentrated solution preparation device further comprises a disinfectant tank, a liquid delivery pipe, a liquid delivery pump and a disinfectant nozzle, the liquid delivery pump and the disinfectant tank are arranged on the rack, the barrel body is provided with a disinfection hole communicating with the inside, the disinfection hole is close to the barrel opening, one end of the liquid delivery pipe is connected to the disinfectant tank through the liquid delivery pump, the other end of the liquid delivery pipe extends into the barrel body through the disinfection hole, and the disinfectant nozzle is located in the barrel body and connected to the end of the liquid delivery pipe away from the disinfectant tank. The disinfectant tank is configured to store disinfectant. The liquid delivery pump is configured to extract the disinfectant from the disinfectant tank and pump the disinfectant to the disinfectant nozzle through the liquid delivery pipe. The disinfectant nozzle is configured to spray the disinfectant onto the cutting tool, the inner wall of the hopper and the barrel body.

9. The concentrate formulation device of claim 1, wherein, The concentrated liquid preparation device further comprises a water storage tank, a water conveying pipe, a water conveying pump and a cleaning nozzle, the water conveying pump and the water storage tank are arranged on the rack, the barrel has a cleaning hole in communication with the inside, the cleaning hole is close to the barrel opening, one end of the water conveying pipe is connected to the water storage tank through the water conveying pump, the other end of the water conveying pipe extends into the barrel through the cleaning hole, the cleaning nozzle is located in the barrel and is connected to the other end of the water conveying pipe away from the water storage tank, wherein: The water storage tank is used for storing clean water. The water conveying pump is used for pumping the clean water from the water storage tank to the cleaning nozzle through the water conveying pipe. The cleaning nozzle is used for spraying the clean water onto the cutter and the inner wall of the barrel and the hopper.

10. The concentrate formulation device of claim 1, wherein, The hopper comprises a lower hopper and an upper hopper, the lower hopper is sleeved at the barrel opening of the barrel, the upper hopper is sleeved on the lower hopper, the barrel cover covers the upper hopper, the through hole is located on the lower hopper, the cutter is located in the lower hopper, and the size of the upper hopper is smaller than that of the lower hopper.

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