Automatic opening and closing device of barrel cover and concentrated solution preparation system

Abstract

The utility model provides an automatic opening and closing device of a barrel cover and a concentrated solution preparation system, and relates to the technical field of medical instruments. According to the automatic opening and closing device, the rack, the moving mechanism and the lifting mechanism form the automatic opening and closing device, the moving mechanism is arranged on the rack and is in driving connection with the lifting mechanism, and the lifting mechanism is in driving connection with the can cover covering the can body; in the barrel cover opening process, the lifting mechanism drives the barrel cover to ascend so that the barrel cover can be separated from the barrel body, and the moving mechanism drives the lifting mechanism to move away from the upper portion of the barrel body along with the barrel cover. In the process of closing the can cover, the moving mechanism drives the lifting mechanism and the can cover to move back to the position above the can body, and the lifting mechanism drives the can cover to descend, so that the can cover covers the can body, and pressing force is applied to the can cover. On the basis, the workload of repeatedly opening and closing the barrel cover by medical staff in the concentrated solution preparation process can be reduced, the labor cost is reduced, human errors are avoided, and the quality of the prepared concentrated solution is improved.

Description

Technical Field

[0001] This application relates to the technical field of medical devices, and particularly to an automatic opening and closing device for a barrel cover and a concentrated solution preparation system. Background Art

[0002] The most commonly used medical method for treating patients with acute and chronic kidney diseases is hemodialysis. The principle is to remove harmful substances such as metabolic wastes, excess water, and electrolytes in the patient's blood through diffusion, convection, etc., and at the same time supplement necessary substances to maintain the acid-base balance and electrolyte balance in the patient's body. Usually, hemodialysis needs to be realized by a centralized liquid supply system. The centralized liquid supply system can prepare hemodialysis dry powder into concentrated solution and store it in a liquid preparation barrel, and then use a liquid preparation pump to transport the concentrated solution in the liquid preparation barrel to each dialysis position through a pipeline network, thus realizing the safe and stable supply of the concentrated solution.

[0003] In the related art, when preparing the concentrated solution, the barrel cover of the liquid preparation barrel needs to be opened and closed repeatedly, which results in insufficient sealing of the liquid preparation barrel and the quality of the prepared concentrated solution cannot be guaranteed. In addition, the opening and closing of the barrel cover still need to be manually operated, with a large workload, high labor cost, and prone to human errors, thus affecting the quality of the prepared concentrated solution. Utility Model Content

[0004] This application provides an automatic opening and closing device for a barrel cover and a concentrated solution preparation system, aiming to solve the problem of poor quality when the centralized liquid supply system automatically prepares the concentrated solution in the related art.

[0005] To solve the above-mentioned drawbacks in the related art, in the first aspect of this application, an automatic opening and closing device for a barrel cover is provided, including a frame, a moving mechanism, and a lifting mechanism. The moving mechanism is arranged on the frame, the lifting mechanism is arranged on the moving mechanism, the moving mechanism is drivingly connected to the lifting mechanism, and the barrel cover for covering on the barrel body is arranged on the lifting mechanism. The lifting mechanism is drivingly connected to the barrel cover. During the process of opening the barrel cover, the lifting mechanism drives the barrel cover to rise, so that the barrel cover is separated from the barrel body, and the moving mechanism drives the lifting mechanism and the barrel cover to move away from above the barrel body; during the process of closing the barrel cover, the moving mechanism drives the lifting mechanism and the barrel cover to move back above the barrel body, and the lifting mechanism drives the barrel cover to descend, so that the barrel cover covers on the barrel body and applies a pressing force to the barrel cover.

[0006] In some implementation solutions, the moving mechanism includes a first bracket, a first motor, a first guide rail, a first slider, and a first transmission structure. The first bracket is arranged on the frame. The first motor and the first guide rail are both arranged on the first bracket. The first motor is drivingly connected to the first slider through the first transmission structure. The first slider is slidably matched with the first guide rail. The lifting mechanism is arranged on the first slider. Wherein, the first motor is used to drive the first slider to slide along the first guide rail through the first transmission structure, so that the lifting mechanism drives the bucket cover to move synchronously. Further, the first transmission structure includes a first lead screw and a first nut. The first lead screw is connected to the output shaft of the first motor. The first nut is sleeved on the first lead screw and is in threaded cooperation with the first lead screw. The first slider is arranged on the first nut.

[0007] Further, the moving mechanism further includes a first photoelectric baffle and two first photoelectric switches. The two first photoelectric switches are respectively electrically connected to the first motor. The two first photoelectric switches are both arranged on the first bracket and are respectively located at opposite ends of the first guide rail. The first photoelectric baffle is arranged on the first slider. Wherein, one of the two first photoelectric switches is used to indicate the final position when the bucket cover is moved away from above the bucket body, and the other is used to indicate the final position when the bucket cover is moved back above the bucket body. When the first slider slides to the end of the first guide rail, the first photoelectric baffle blocks the corresponding first photoelectric switch, and the corresponding first photoelectric switch senses that it is blocked and turns off the first motor.

[0008] In some implementation solutions, the lifting mechanism includes a second bracket, a second motor, a second guide rail, a second slider, a second transmission structure, a cover plate connecting block, and a cover plate connecting rod. The moving mechanism is drivingly connected to the second bracket. The second motor and the second guide rail are both arranged on the second bracket. The second motor is drivingly connected to the second slider through the second transmission structure. The second slider is slidably matched with the second guide rail. The cover plate connecting block is arranged on the second slider. The cover plate connecting rod is arranged on the cover plate connecting block. The cover plate connecting rod is used to connect the bucket cover. Wherein, the second motor is used to drive the second slider and the cover plate connecting block to lift along the second guide rail through the second transmission structure, so that the cover plate connecting rod drives the bucket cover to lift synchronously.

[0009] Further, the second transmission structure includes a second lead screw and a second nut. The second lead screw is connected to the output shaft of the second motor. The second nut is sleeved on the second lead screw and is in threaded cooperation with the second lead screw. The second slider is arranged on the second nut.

[0010] Further, the lifting mechanism further includes a nut connecting block, a circlip, a compression spring, a second photoelectric baffle, and two second photoelectric switches. The cover connecting block is hollow inside, and a through hole communicating with the inside is formed in the cover connecting block. The nut connecting block is arranged on the second nut, and the nut connecting block extends into the cover connecting block through the through hole and is limited in the cover connecting block by the circlip. The compression spring is arranged inside the cover connecting block, and the opposite ends of the compression spring respectively abut against the nut connecting block and the cover connecting block. The second photoelectric baffle is arranged at one end of the nut connecting block that does not extend into the cover connecting block. The two second photoelectric switches are arranged oppositely and are respectively located on the second bracket and the cover connecting block, and the two second photoelectric switches are respectively electrically connected to the second motor. During the process of opening the bucket cover, the second motor drives the second lead screw to rotate, and drives the second nut to drive the second slider to rise along the second guide rail, so that the cover connecting block, the cover connecting rod, and the bucket cover rise synchronously. When rising to make the second photoelectric baffle block the second photoelectric switch on the second bracket, the second photoelectric switch on the second bracket senses that it is blocked and turns off the second motor. During the process of closing the bucket cover, the second motor drives the second lead screw to rotate, and drives the second nut to drive the second slider to descend along the second guide rail, so that the cover connecting block, the cover connecting rod, and the bucket cover descend synchronously. After descending to make the bucket cover cover on the bucket body, the nut connecting block compresses the compression spring to apply a pressing force to the bucket cover through the compression spring. When compressed to make the second photoelectric baffle block the second photoelectric switch on the cover connecting block, the second photoelectric switch on the cover connecting block senses that it is blocked and turns off the second motor.

[0011] In a second aspect of the present application, a concentrated solution preparation system is provided, which includes a material transporting mechanism, a bag opening mechanism, a liquid preparation bucket, a material tray, and the automatic opening and closing device described in the first aspect of the present application. The liquid preparation bucket includes a bucket body and a bucket cover. A plurality of dry powder bags are placed on the material tray, and hemodialysis dry powder is contained in the dry powder bags. The liquid preparation bucket and the material tray are relatively arranged on the frame. The material transporting mechanism is arranged on the frame and above the material tray. The automatic opening and closing device and the bag opening mechanism are adjacently arranged on the frame and close to the bucket cover. The automatic opening and closing device is drivingly connected to the bucket cover. During the preparation process of the concentrated solution, the automatic opening and closing device opens the bucket cover and moves the bucket cover away from above the bucket body. The material transporting mechanism grabs the dry powder bags on the material tray and transports the dry powder bags above the bucket body. The bag opening mechanism cuts open the dry powder bags, and the hemodialysis dry powder in the dry powder bags falls into the bucket body. The material transporting mechanism discards the dry powder bags and returns above the material tray. The automatic opening and closing device moves the bucket cover back above the bucket body. The automatic opening and closing device closes the bucket cover and applies a pressing force to the bucket cover.

[0012] In some implementation solutions, the bag-opening mechanism includes a driver, a bag-opening knife, and two bag-cutting knives. The driver is arranged on the frame, and the driver is drivingly connected to the bag-opening knife and the two bag-cutting knives. During the process of the bag-opening mechanism slicing open the dry powder bag, the driver first drives the bag-opening knife to make a horizontal cut in the width direction of the dry powder bag, and then drives the two bag-cutting knives to make two vertical cuts in the length direction of the dry powder bag. Further, the concentrated liquid preparation system further includes a feeding hopper and a loading hopper. The feeding hopper is sleeved at the bucket opening of the barrel body, the loading hopper is sleeved on the feeding hopper, the barrel cover is closed on the feeding hopper, sealing rings are provided at the positions between the feeding hopper and the barrel body and where the feeding hopper contacts the barrel cover, the feeding hopper and the loading hopper enclose an enclosed space, and a knife opening for inserting the bag-opening knife and the two bag-cutting knives is provided at a position of the feeding hopper close to the bucket opening. During the preparation process of the concentrated liquid, the material transporting mechanism transports the dry powder bag into the enclosed space, and the bag-opening mechanism extends the bag-opening knife and the two bag-cutting knives into the enclosed space through the knife opening and slices open the dry powder bag in the enclosed space.

[0013] In one aspect, the embodiment of the present application provides an automatic opening and closing device for a barrel cover. The automatic opening and closing device is composed of a frame, a moving mechanism, and a lifting mechanism. The moving mechanism is arranged on the frame, the moving mechanism is drivingly connected to the lifting mechanism, and the lifting mechanism is drivingly connected to the barrel cover covering the barrel body. During the process of opening the barrel cover, the lifting mechanism drives the barrel cover to rise, so that the barrel cover is separated from the barrel body, and the moving mechanism drives the lifting mechanism and the barrel cover to move away from above the barrel body; during the process of closing the barrel cover, the moving mechanism drives the lifting mechanism and the barrel cover to move back above the barrel body, and the lifting mechanism drives the barrel cover to descend, so that the barrel cover is closed on the barrel body and applies a pressing force to the barrel cover. It can be seen that the present application can realize the automatic opening and closing of the barrel cover (such as the barrel cover of the liquid preparation barrel), reduce the workload of medical staff repeatedly opening and closing the barrel cover during the preparation process of the concentrated liquid, reduce the labor cost, avoid the inaccurate problem of the preparation result of the concentrated liquid caused by human errors, and improve the quality of the concentrated liquid; moreover, the present application can apply a pressing force to the barrel cover after the barrel cover is closed, so that the cooperation between the barrel cover and the barrel body is tighter, that is, there is better sealing between the barrel cover and the barrel body, avoiding the pollution of the concentrated liquid in the liquid preparation barrel, and further improving the quality of the concentrated liquid.

[0014] In another aspect of the embodiments of the present application, a concentrated solution preparation system is provided. The concentrated solution preparation system includes a material transportation mechanism, a bag opening mechanism, a liquid preparation barrel, a material tray, and the automatic opening and closing device of the present application. When preparing the concentrated solution, the automatic opening and closing device opens the barrel lid and moves the barrel lid away from above the barrel body. The material transportation mechanism grabs the dry powder bag on the material tray and transports the dry powder bag above the barrel body. The bag opening mechanism cuts open the dry powder bag, so that the hemodialysis dry powder in the dry powder bag falls into the barrel body. The material transportation mechanism discards the dry powder bag and returns above the material tray. The automatic opening and closing device moves the barrel lid back above the barrel body and closes the barrel lid on the barrel body, and at the same time applies a pressing force to the barrel lid. It can be seen that the concentrated solution preparation system of the present application can realize the automatic feeding of the dry powder bag, the automatic bag opening, and the automatic feeding of the hemodialysis dry powder in the dry powder bag. And because it applies the automatic opening and closing device of the present application, it has all the advantages of the automatic opening and closing device. Description of the Drawings

[0015] In order to more clearly illustrate the technical solutions in the related art or the embodiments of the present application, the following will briefly introduce the drawings required to be used in the description of the related art or the embodiments of the present application. Obviously, the drawings in the following description are only some embodiments of the present application, rather than all embodiments. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0016] Figure 1 The front view of the automatic opening and closing device provided by the embodiment of the present application;

[0017] Figure 2 The sectional view of the automatic opening and closing device provided by the embodiment of the present application along Figure 1 the A-A direction in

[0018] Figure 3 The top view of the automatic opening and closing device provided by the embodiment of the present application;

[0019] Figure 4 The front view of the concentrated solution preparation system provided by the embodiment of the present application;

[0020] Figure 5 The side view of the concentrated solution preparation system provided by the embodiment of the present application along the B-B direction in 4;

[0021] Figure 6 The Figure 5 local enlarged view at C provided by the embodiment of the present application;

[0022] Figure 7 The assembly schematic diagram of the upper and lower hoppers and the barrel body provided by the embodiment of the present application.

[0023] The marks in the above drawings are respectively represented as:

[0024] 100 - Automatic opening and closing device, 110 - Moving mechanism, 111 - First bracket, 112 - First motor, 113 - First guide rail, 114 - First slider, 115 - First transmission structure, 1151 - First lead screw, 1152 - First nut, 116 - First photoelectric baffle, 117 - First photoelectric switch, 118 - Mounting plate, 120 - Lifting mechanism, 121 - Second bracket, 122 - Second motor, 123 - Second guide rail, 124 - Second slider, 125 - Second transmission structure, 1251 - Second lead screw, 1252 - Second nut, 126 - Cover connecting block, 127 - Cover connecting rod, 128 - Nut connecting block, 129 - Snap ring, 130 - Compression spring, 131 - Second photoelectric baffle, 132 - Second photoelectric switch, 200 - Liquid dispensing bucket, 210 - Bucket cover, 220 - Bucket body, 300 - Bag opening mechanism, 310 - Bag opening knife, 320 - Bag cutting knife, 400 - Material conveying mechanism, 500 - Feeding hopper, 510 - Knife edge, 511 - Bag opening knife edge, 512 - Bag cutting knife edge, 600 - Loading hopper, 700 - Liquid dispensing pump, 800 - Sealing ring, 900 - Tray. Detailed implementation manners

[0025] In the related art, the centralized liquid supply system includes an automatic bag opening device. The automatic bag opening device can automatically open the packaging bag containing hemodialysis dry powder and put the hemodialysis dry powder in the packaging bag into the liquid dispensing bucket, so as to realize the automatic preparation of the concentrated solution. However, the bag opening action of the automatic bag opening device is carried out above the liquid dispensing bucket. Due to the rapidity of the bag opening action, inevitably, a small part of the hemodialysis dry powder will be scattered, resulting in inaccurate preparation results of the concentrated solution in the liquid dispensing bucket, not only reducing the quality of the concentrated solution, but also increasing the cleaning difficulty of the equipment. Moreover, during the preparation process of the concentrated solution, the bucket cover of the liquid dispensing bucket needs to be opened and closed repeatedly, which leads to insufficient sealing of the liquid dispensing bucket and the quality of the prepared concentrated solution cannot be guaranteed. In addition, the opening and closing of the bucket cover still need to be manually operated, with a large workload, high labor cost, and prone to human errors, thus affecting the quality of the prepared concentrated solution.

[0026] To this end, the present application proposes an automatic opening and closing device for a bucket lid in the following embodiments. This automatic opening and closing device can achieve the automatic opening and closing of the bucket lid (not limited to the liquid dispensing bucket), and can apply a pressing force to the bucket lid after it is closed, making the fit between the bucket lid and the bucket body closer, that is, having better sealing performance between the bucket lid and the bucket body. On the one hand, it can reduce the workload of medical staff repeatedly opening and closing the bucket lid during the preparation of the concentrated solution, reduce labor costs, and avoid human errors. On the other hand, it also improves the quality of the prepared concentrated solution. Further, the present application also proposes a concentrated solution preparation system applying the above automatic opening and closing device in the following embodiments. This concentrated solution preparation system not only has the advantages of the automatic opening and closing device, but also can avoid the spillage of hemodialysis dry powder during automatic unpacking, thereby improving the accuracy of the concentrated solution preparation result in the liquid dispensing bucket and reducing the cleaning difficulty of the equipment.

[0027] In order to make the purpose, technical solution and advantages of the present application more obvious and understandable, the present application will be clearly and completely described below in conjunction with the embodiments of the present application and the corresponding drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions from beginning to end. It should be understood that the various embodiments of the present application described below are only used to explain the present application and are not used to limit the present application. That is, based on the various embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative work belong to the scope of protection of the present application. In addition, the technical features involved in the various embodiments of the present application described below can be combined with each other as long as they do not conflict with each other.

[0028] Please refer to Figure 1 , Figure 1 , which is the front view of the automatic opening and closing device. This embodiment provides an automatic opening and closing device 100 for a bucket lid. The automatic opening and closing device 100 can be applied to any container with a lid, and is mainly used to achieve the automatic opening and closing of the lid. This embodiment will take the bucket lid of the liquid dispensing bucket as an example for related description. Specifically, the automatic opening and closing device 100 includes a frame (not shown in the figure), a moving mechanism 110, and a lifting mechanism 120. The moving mechanism 110 is arranged on the frame, the lifting mechanism 120 is arranged on the moving mechanism 110, the moving mechanism 110 is drivingly connected to the lifting mechanism 120, the bucket lid for covering the bucket body is arranged on the lifting mechanism 120, and the lifting mechanism 120 is drivingly connected to the bucket lid.

[0029] During the actual opening and closing process of the bucket lid, when it is necessary to open the bucket lid, the lifting mechanism 120 drives the bucket lid to rise, so that the bucket lid is separated from the bucket body, and the moving mechanism 110 drives the lifting mechanism 120 together with the bucket lid to move away from above the bucket body; when it is necessary to close the bucket lid, the moving mechanism 110 drives the lifting mechanism 120 together with the bucket lid to move back above the bucket body, and the lifting mechanism 120 drives the bucket lid to descend, so that the bucket lid is closed on the bucket body and a pressing force is applied to the bucket lid. It can be understood that the lifting mechanism 120 drives the bucket lid to lift and lower, indicating that the direction in which the lifting mechanism 120 drives the bucket lid to move is the vertical direction; preferably, the direction in which the moving mechanism 110 drives the bucket lid to move is the horizontal direction, so that it can drive the bucket lid to move away from above the bucket body or move back above the bucket body. Thus, it can be seen that the present application can realize the automatic opening and closing of the bucket lid (such as the bucket lid of a liquid dispensing bucket), and can apply a pressing force to the bucket lid after the bucket lid is closed, so that the cooperation between the bucket lid and the bucket body is closer, that is, there is better sealing between the bucket lid and the bucket body. On the one hand, it can reduce the workload of medical staff repeatedly opening and closing the bucket lid during the preparation of the concentrated solution, reduce the labor cost, and avoid human errors. On the other hand, it also improves the quality of the prepared concentrated solution.

[0030] In some embodiments, please refer to Figure 1 , and in combination with Figure 2 and Figure 3 , Figure 2 is a cross-sectional view of the automatic opening and closing device along the Figure 1 A-A direction in Figure 3 , and

[0031] As one of the embodiments, the first transmission structure 115 includes a first lead screw 1151 and a first nut 1152. The first lead screw 1151 is connected to the output shaft of the first motor 112. The first nut 1152 is sleeved on the first lead screw 1151 and is in threaded cooperation with the first lead screw 1151. The first slider 114 is arranged on the first nut 1152. During the actual opening and closing process of the bucket cover, the first motor 112 drives the first lead screw 1151 to rotate. The rotating first lead screw 1151 will drive the first nut 1152 to move along the axis of the first lead screw 1151. The first nut 1152 moving along the axis of the first lead screw 1151 will drive the first slider 114 to slide along the first guide rail 113. That is to say, with the first lead screw 1151 and the first nut 1152 constituting the first transmission structure 115, the rotational motion of the first motor 112 can be converted into the linear sliding of the first slider 114, so as to drive the lifting mechanism 120 and the bucket cover to move away from above the bucket body or move back above the bucket body by using the first slider 114. Preferably, in order to ensure the stability of the connection between the lifting mechanism 120 and the moving mechanism 110, a mounting plate 118 can be arranged on the first slider 114, and the lifting mechanism 110 can be arranged on the mounting plate 118.

[0032] Further, the moving mechanism 110 further includes a first photoelectric baffle 116 and two first photoelectric switches 117. The two first photoelectric switches 117 are respectively electrically connected to the first motor 112. The two first photoelectric switches 117 are both arranged on the first bracket 111 and are respectively located at opposite ends of the first guide rail 113. The first photoelectric baffle 116 is arranged on the first slider 114. During the actual opening and closing process of the bucket cover, when the first slider 114 slides to the end of the first guide rail 113, the first photoelectric baffle 116 will block the corresponding first photoelectric switch 117, and the corresponding first photoelectric switch 117 will turn off the first motor 112 when it senses that it is blocked. It can be understood that one of the two first photoelectric switches 117 is used to indicate the final position when moving the bucket cover away from above the bucket body, and the other first photoelectric switch 117 is used to indicate the final position when moving the bucket cover back above the bucket body.

[0033] In some embodiments, still referring to Figure 1 、 Figure 2 and Figure 3, the lifting mechanism 120 includes a second bracket 121, a second motor 122, a second guide rail 123, a second slider 124, a second transmission structure 125, a cover connection block 126 and a cover connection rod 127. The moving mechanism 110 is drivingly connected to the second bracket 121. The second motor 122 and the second guide rail 123 are both arranged on the second bracket 121. The second motor 122 is drivingly connected to the second slider 124 through the second transmission structure 125. The second slider 124 is slidably engaged with the second guide rail 123. The cover connection block 126 is arranged on the second slider 124. The cover connection rod 127 is arranged on the cover connection block 126. The cover connection rod 127 is used to connect with the bucket cover. During the actual opening and closing process of the bucket cover, the second motor 122 can drive the second slider 124 to slide along the second guide rail 123 through the second transmission structure 125. The sliding second slider 124 will drive the cover connection block 126, the cover connection rod 127 and the bucket cover to rise and fall synchronously.

[0034] As one of the embodiments, the second transmission structure 125 includes a second lead screw 1251 and a second nut 1252. The second lead screw 1251 is connected to the output shaft of the second motor 122. The second nut 1252 is sleeved on the second lead screw 1251 and is in threaded engagement with the second lead screw 1251. The second slider 124 is arranged on the second nut 1252. That is to say, with the second lead screw 1251 and the second nut 1252 constituting the second transmission structure 125, the rotational motion of the second motor 122 can be converted into the linear lifting of the second slider 124, so as to drive the cover connection block 126, the cover connection rod 127 and the bucket cover to rise or fall by the second slider 124, and press the bucket cover when the bucket cover is closed on the bucket body.

[0035] Further, the lifting mechanism 120 further includes a nut connecting block 128, a circlip 129, a compression spring 130, a second photoelectric baffle 131 and two second photoelectric switches 132. The cover connecting block 126 is hollow inside, and a through hole communicating with the inside is formed on the cover connecting block 126. The nut connecting block 128 is arranged on the second nut 1252. The nut connecting block 128 extends into the cover connecting block 126 through the through hole and is limited in the cover connecting block 126 by the circlip 129. The compression spring 130 is arranged inside the cover connecting block 126. The opposite ends of the compression spring 130 respectively abut against the nut connecting block 128 and the cover connecting block 126. The second photoelectric baffle 131 is arranged at one end of the nut connecting block 128 that does not extend into the cover connecting block 126. The two second photoelectric switches 132 are arranged oppositely and are respectively located on the second bracket 121 and the cover connecting block 126. The two second photoelectric switches 132 are respectively electrically connected to the second motor 122. In addition, it should be noted that the second photoelectric switch 132 located on the second bracket 121 is used to indicate the final position when the bucket cover rises, and the second photoelectric switch 132 located on the cover connecting block 126 is used to indicate the final position when the bucket cover descends.

[0036] During the actual opening and closing process of the bucket cover, when it is necessary to open the bucket cover, the second motor 122 drives the second lead screw 1251 to rotate, and drives the second nut 1252 to drive the second slider 124 to rise along the second guide rail 123, so that the cover connecting block 126, the cover connecting rod 127 and the bucket cover rise synchronously. When rising to make the second photoelectric baffle 131 block the second photoelectric switch 132 located on the second bracket 121, the second photoelectric switch 132 located on the second bracket 121 senses that it is blocked and turns off the second motor 122; when it is necessary to close the bucket cover, the second motor 122 drives the second lead screw 1251 to rotate, and drives the second nut 1252 to drive the second slider 124 to descend along the second guide rail 123, so that the cover connecting block 126, the cover connecting rod 127 and the bucket cover descend synchronously. After descending to make the bucket cover cover on the bucket body, since the bucket cover cannot move downward anymore, the cover connecting block 126 does not move, but the second motor 122 continues to drive the second lead screw 1251 to rotate, so that the second nut 1252 continues to drive the nut connecting block 128 to move downward. At this time, the nut connecting block 128 will compress the compression spring 130, and the elastic force of the compression spring 130 will be transmitted to the bucket cover through the cover connecting block 126 and the cover connecting rod 127, thereby providing a pressing force for the bucket cover. When compressed to make the second photoelectric baffle 131 block the second photoelectric switch 132 located on the cover connecting block 126, the second photoelectric switch 132 located on the cover connecting block 126 senses that it is blocked and turns off the second motor 122.

[0037] Please refer to Figures 4 to 7 , Figure 4 which is the front view of the concentrated liquid preparation system.Figure 5 is a side view of the concentrated solution preparation system along the B-B direction in 4. Figure 6 is Figure 5 a partial enlarged view of the position C in Figure 7 a schematic assembly diagram of the loading and unloading hoppers and the barrel body. Specifically, the concentrated solution preparation system includes a material transporting mechanism 400, a bag opening mechanism 300, a liquid preparation barrel 200, a material tray 900 and an automatic opening and closing device 100. The liquid preparation barrel 200 includes a barrel body 220 and a barrel cover 210. A plurality of dry powder bags are placed on the material tray 900, and the dry powder bags contain hemodialysis dry powder. The liquid preparation barrel 200 and the material tray 900 are oppositely arranged on the frame. The material transporting mechanism 400 is arranged on the frame and above the material tray 900. The automatic opening and closing device 100 and the bag opening mechanism 300 are adjacently arranged on the frame and near the barrel cover 210. The automatic opening and closing device 100 is drivingly connected to the barrel cover 210.

[0038] During the preparation of the concentrated solution, the automatic opening and closing device 100 opens the barrel cover 210 and moves the barrel cover 210 away from above the barrel body 220. The material transporting mechanism 400 grabs the dry powder bags on the material tray 900 and transports the dry powder bags above the barrel body 220. The bag opening mechanism 300 cuts open the dry powder bags, and the hemodialysis dry powder in the dry powder bags falls into the barrel body 220. The material transporting mechanism 400 discards the dry powder bags and returns above the material tray 900. The automatic opening and closing device 100 moves the barrel cover 210 back above the barrel body 220. The automatic opening and closing device 100 closes the barrel cover 210 and applies a pressing force to the barrel cover 210. In addition, it should be noted that the concentrated solution preparation system can be used to form a centralized liquid supply system. The concentrated solution preparation system can form a centralized liquid supply system with a liquid distribution pump 700, a pipeline network and numerous dialysis machines. This application will not be further described here.

[0039] In some embodiments, the bag opening mechanism 300 includes a driver (such as a motor), a bag opening knife 310, and two bag cutting knives 320. The driver is disposed on the frame, and the driver is drivingly connected to the bag opening knife 310 and the two bag cutting knives 320. During the process of the bag opening mechanism 300 slicing open the dry powder bag, the driver first drives the bag opening knife 310 to make a horizontal cut in the width direction of the dry powder bag, and then drives the two bag cutting knives 320 to make two vertical cuts in the length direction of the dry powder bag. Further, the concentrated liquid preparation system further includes a feeding hopper 500 and a loading hopper 600. The feeding hopper 500 is sleeved at the opening of the barrel body 220, the loading hopper 600 is sleeved on the feeding hopper 500, the barrel cover 210 is closed on the feeding hopper 500, and sealing rings 800 are provided at the positions between the feeding hopper 500 and the barrel body 220 and at the positions on the feeding hopper 500 that are in contact with the barrel cover 210. The feeding hopper 500 and the loading hopper 600 enclose an enclosed space. An opening 510 for inserting the bag opening knife 310 and the two bag cutting knives 320 is provided at a position of the feeding hopper 500 close to the barrel opening, including a bag opening knife opening 511 and two bag cutting knife openings 512. During the preparation of the concentrated liquid, the material transporting mechanism 400 transports the dry powder bag into the enclosed space. The bag opening mechanism 300 extends the bag opening knife 310 and the two bag cutting knives 320 into the enclosed space through the opening 510 and slices open the dry powder bag in the enclosed space. It can be understood that the opening of the dry powder bag is carried out in the enclosed space. Under the enclosing action of the feeding hopper 500 and the loading hopper 600, the hemodialysis dry powder in the opened dry powder bag will not spill outside, but will directly fall into the barrel body 220 or slide into the barrel body 220 along the inner walls of the loading hopper 600 and the feeding hopper 500, thereby improving the accuracy of the concentrated liquid preparation result in the liquid preparation barrel 200 and reducing the cleaning difficulty of the equipment.

[0040] The above embodiments are only the preferred implementations of the present application, and they are not the only limitations on the automatic opening and closing device 100 and the related content of the concentrated solution preparation system. In this regard, those skilled in the art can make flexible settings based on the above embodiments according to the actual application scenarios. It can be understood that through the implementation of the above embodiments of the present application, the automatic opening and closing device 100 is composed of a frame, a moving mechanism 110 and a lifting mechanism 120. The moving mechanism 110 is arranged on the frame, the moving mechanism 110 is drivingly connected to the lifting mechanism 120, and the lifting mechanism 120 is drivingly connected to the barrel cover 210 covering the barrel body 220. During the process of opening the barrel cover 210, the lifting mechanism 120 drives the barrel cover 210 to rise, so that the barrel cover 210 is separated from the barrel body 220, and the moving mechanism 110 drives the lifting mechanism 120 to move the barrel cover 210 away from above the barrel body 220. During the process of closing the barrel cover 210, the moving mechanism 110 drives the lifting mechanism 120 to move the barrel cover 210 back above the barrel body 220, and the lifting mechanism 120 drives the barrel cover 210 to descend, so that the barrel cover 210 covers the barrel body 220 and applies a pressing force to the barrel cover 210. Thus, it can be seen that the present application can realize the automatic opening and closing of the barrel cover 210 (such as the barrel cover 210 of the liquid preparation barrel 200), and can apply a pressing force to the barrel cover 210 after the barrel cover 210 is closed, so that the cooperation between the barrel cover 210 and the barrel body 220 is tighter, that is, there is better sealing between the barrel cover 210 and the barrel body 220. On the one hand, it can reduce the workload of medical staff repeatedly opening and closing the barrel cover 210 during the preparation of the concentrated solution, reduce the labor cost, and avoid human errors. On the other hand, it also improves the quality of the prepared concentrated solution.

[0041] It should be noted that several embodiments shown above in the present application are described in a progressive manner. The key points of each embodiment are the differences from other embodiments. For the same or similar parts between the various embodiments, reference can be made to each other. It should also be noted that in the text description of the present application, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is such an actual relationship or order between these entities or operations. Further, the terms "include", "comprise" or any other corresponding variants are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes these elements, but may also include other elements not expressly listed, or may also include elements inherent in such a process, method, article or device. Moreover, without further limitation, the element defined by the statement "including one..." does not exclude the existence of another identical element in the process, method, article or device including the said element.

[0042] In addition, by implementing several embodiments shown above in the present application, those skilled in the art can implement or use the present application. For the several embodiments shown above in the present application, various modifications thereto will be obvious to those skilled in the art, and the general principles defined in the present application can be implemented in other embodiments not shown without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the several embodiments shown above, but rather will conform to the broadest scope consistent with the principles and novel features disclosed in the present application.

Claims

1. An automatic opening and closing device for a barrel cover, characterized in that: The machine comprises a frame, a moving mechanism and a lifting mechanism, wherein the moving mechanism is arranged on the frame, the lifting mechanism is arranged on the moving mechanism, the moving mechanism is connected to the lifting mechanism by driving, a barrel cover for covering the barrel body is arranged on the lifting mechanism, and the lifting mechanism is connected to the barrel cover by driving, wherein: The moving mechanism is used to: drive the lifting mechanism and the barrel cover to move away from the top of the barrel body when opening the barrel cover; or drive the lifting mechanism and the barrel cover to move back to the top of the barrel body when closing the barrel cover; The lifting mechanism is used to: drive the barrel cover to rise when opening the barrel cover, so that the barrel cover is separated from the barrel body and is located above the barrel body; or drive the barrel cover to descend when closing the barrel cover, so that the barrel cover is closed on the barrel body and a pressing force is applied to the barrel cover.

2. The automatic opening and closing device according to claim 1, characterized in that: The moving mechanism includes a first bracket, a first motor, a first guide rail, a first slider and a first transmission structure, the first bracket is arranged on the frame, the first motor and the first guide rail are both arranged on the first bracket, the first motor is drivingly connected to the first slider through the first transmission structure, the first slider is slidingly matched with the first guide rail, and the lifting mechanism is arranged on the first slider; wherein, the first motor is used to drive the first slider to slide along the first guide rail through the first transmission structure, so that the lifting mechanism and the barrel cover move synchronously.

3. The automatic opening and closing device according to claim 2, characterized in that: The first transmission structure includes a first lead screw and a first nut. The first lead screw is connected to the output shaft of the first motor. The first nut is sleeved on the first lead screw and matched with the first lead screw thread. The first slider is arranged on the first nut.

4. The automatic opening and closing device according to claim 2, characterized in that: The moving mechanism also includes a first photoelectric baffle and two first photoelectric switches, the two first photoelectric switches are electrically connected to the first motor respectively, the two first photoelectric switches are both arranged on the first bracket and respectively located at opposite ends of the first guide rail, and the first photoelectric baffle is arranged on the first slider; wherein, one of the two first photoelectric switches is used to indicate the final position when the barrel cover is removed from the top of the barrel body, and the other is used to indicate the final position when the barrel cover is moved back to the top of the barrel body, and the first photoelectric switch is used to turn off the first motor when it senses that it is blocked by the first photoelectric baffle.

5. The automatic opening and closing device according to claim 1, characterized in that: The lifting mechanism includes a second bracket, a second motor, a second guide rail, a second slider, a second transmission structure, a cover connecting block and a cover connecting rod. The moving mechanism is driven and connected to the second bracket. The second motor and the second guide rail are both arranged on the second bracket. The second motor is driven and connected to the second slider through the second transmission structure. The second slider is slidably matched with the second guide rail. The cover connecting block is arranged on the second slider. The cover connecting rod is arranged on the cover connecting block. The cover connecting rod is used to connect the barrel cover. The second motor is used to drive the second slider to lift and lower the cover connecting block along the second guide rail through the second transmission structure, so that the cover connecting rod can lift and lower the barrel cover synchronously.

6. The automatic opening and closing device according to claim 5, characterized in that: The second transmission structure includes a second lead screw and a second nut. The second lead screw is connected to the output shaft of the second motor. The second nut is sleeved on the second lead screw and threadably matched with the second lead screw. The second slider is arranged on the second nut.

7. The automatic opening and closing device according to claim 6, characterized in that: The lifting mechanism further includes a nut connection block, a retaining spring, a compression spring, a second photoelectric baffle and two second photoelectric switches. The cover plate connection block is hollow inside, and a through hole communicating with the inside is opened on the cover plate connection block. The nut connection block is arranged on the second nut, and the nut connection block extends into the cover plate connection block through the through hole and is limited in the cover plate connection block by the retaining spring. The compression spring is arranged in the cover plate connection block, and the opposite ends of the compression spring abut against the nut connection block and the cover plate connection block respectively. The second photoelectric baffle is arranged at one end of the nut connection block that does not extend into the cover plate connection block. The two second photoelectric switches are arranged oppositely and are respectively located on the second bracket and the cover plate connection block. The two second photoelectric switches are respectively electrically connected to the second motor. The second photoelectric switch located on the second bracket is used to indicate the final position of the barrel cover when the lifting mechanism drives the barrel cover to rise, and the second photoelectric switch located on the cover plate connection block is used to indicate the final position of the barrel cover when the lifting mechanism drives the barrel cover to descend, wherein: The second motor is used to: drive the second lead screw to rotate when opening the barrel cover, and drive the second nut together with the second slider to rise along the second guide rail, so that the cover plate connecting block, the cover plate connecting rod and the barrel cover rise synchronously; or drive the second lead screw to rotate when closing the barrel cover, and drive the second nut together with the second slider to descend along the second guide rail, so that the cover plate connecting block, the cover plate connecting rod and the barrel cover descend synchronously; The nut connecting block is used to compress the compression spring after the second motor drives the barrel cover to cover the barrel body, so as to apply a pressing force to the barrel cover through the compression spring; The second photoelectric switch is used to turn off the second motor when it senses that the second photoelectric switch is blocked by the second photoelectric baffle.

8. A concentrate preparation system, characterized in that: The invention comprises a material transport mechanism, a packaging opening mechanism, a liquid preparation barrel, a material tray and the automatic opening and closing device according to any one of claims 1 to 7, wherein the liquid preparation barrel comprises the barrel body and the barrel cover, the material tray is used to place a dry powder bag containing hemodialysis dry powder, the liquid preparation barrel and the material tray are relatively arranged on the frame, the material transport mechanism is arranged on the frame and is located above the material tray, the automatic opening and closing device and the packaging opening mechanism are adjacently arranged on the frame and are located near the barrel cover, and the automatic opening and closing device is drivingly connected to the barrel cover, wherein: The automatic opening and closing device is used to open the barrel cover and move the barrel cover away from the top of the barrel body; The material transport mechanism is used to grab the dry powder bag on the material tray and transport the dry powder bag to the top of the barrel; The bag opening mechanism is used to cut open the dry powder bag above the barrel body, so that the hemodialysis dry powder in the dry powder bag falls into the barrel body; The material transport mechanism is further used to discard the dry powder bag and return it to the top of the material tray after the hemodialysis dry powder in the dry powder bag falls into the barrel; The automatic opening and closing device is also used to move the barrel cover back to the top of the barrel body, close the barrel cover on the barrel body, and apply a pressing force to the barrel cover.

9. The concentrate preparation system according to claim 8, characterized in that: The package opening mechanism comprises a driver, a package opening knife and two bag cutting knives, wherein the driver is arranged on the frame, and the driver is drivingly connected to the package opening knife and the two bag cutting knives, wherein: The driver is used to first drive the bag opening knife to make a horizontal cut in the width direction of the dry powder bag, and then drive the two bag cutting knives to make two vertical cuts in the length direction of the dry powder bag.

10. The concentrate preparation system according to claim 9, characterized in that: It also includes a lower hopper and an upper hopper, the lower hopper is sleeved at the barrel mouth of the barrel body, the upper hopper is sleeved on the lower hopper, the barrel cover is covered on the lower hopper, a sealing ring is provided between the lower hopper and the barrel body, and at a position on the lower hopper that contacts the barrel cover, the lower hopper and the upper hopper are enclosed to form an enclosed space, and a knife edge for inserting the bag opening knife and the two bag cutting knives is provided at a position of the lower hopper near the barrel mouth, wherein: The material transport mechanism is specifically used to transport the dry powder bag into the enclosed space; The package opening mechanism is specifically used to extend the package opening knife and the two bag cutting knives into the enclosed space through the knife edge, and cut open the dry powder bag in the enclosed space.

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