Automatic proportioning equipment for hemodialysis concentrate and its operating process

Abstract

This invention relates to the field of medical equipment technology, specifically to an automatic hemodialysis concentrate mixing device and its operating process, comprising a hemodialysis machine, a mixing chamber, an impeller, a rotating assembly, a stirring wheel, an adjusting assembly, and a telescopic plate. The mixing chamber is installed inside the dialysis machine and has an inlet and an outlet. The inlet is divided into an A-liquid inlet and a B-liquid inlet. An adjusting chamber is provided on the mixing chamber. A rotating assembly is located below the impeller in a drive chamber. A stirring wheel is located above the rotating assembly within the mixing chamber. An adjusting assembly is located on one side of the rotating assembly, and a telescopic plate is installed within the adjusting assembly. The impeller drives the stirring wheel to rotate via the adjusting assembly, achieving uniform mixing of the liquids. The rotating assembly drives the telescopic plate to slide via the adjusting assembly, changing the diameter of the inlet. This invention achieves uniform mixing of hemodialysis concentrates through centrifugal force, improving dialysis efficiency and reducing waste liquid generation.

Description

Technical Field

[0001] This invention relates to the field of medical equipment technology, specifically to an automatic hemodialysis concentrate mixing device and its operating process. Background Technology

[0002] Hemodialysis is one of the commonly used methods of blood purification. It mainly refers to establishing extracorporeal circulation through hemodialysis equipment, injecting the patient's blood and dialysate into the dialyzer at the same time, and using the diffusion effect of the semi-permeable membrane of the dialyzer to remove small molecule metabolic waste or harmful substances from the blood, thereby correcting the patient's water load, electrolyte imbalance, and acid-base imbalance.

[0003] When using a hemodialysis machine, dialysate A and dialysate B are inserted into the machine. The dialysate A and dialysate B are then transported to the mixing chamber for mixing in equal proportions. The mixed dialysate is then mixed with reverse osmosis water and transported to the dialyzer for further mixing.

[0004] During the uniform mixing of dialysate A and dialysate B, an imbalance in the ratio may occur, leading to excessively low conductivity and decreased osmotic pressure. This can result in hemolysis and increase the amount of waste liquid, causing dialysate waste.

[0005] To address this, existing technology has proposed a hemodialysis machine. This hemodialysis machine utilizes an A dry powder cartridge, a B dry powder cartridge, and a balance chamber to effectively achieve hemodialysis using A powder and B powder, reducing the cost of the hemodialysis machine. However, it still does not solve the problem of reduced dialysis effect and hemolysis caused by imbalance in the dialysate ratio, as well as the problem of increased waste fluid.

[0006] In view of this, the present invention proposes an automatic hemodialysis concentrate preparation device and its operating process. Summary of the Invention

[0007] The technical problem to be solved by the present invention is to provide an automatic hemodialysis concentrate preparation device and its operating process, which addresses the shortcomings of the prior art.

[0008] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is: an automatic hemodialysis concentrate mixing device and its operating process:

[0009] An automatic hemodialysis concentrate mixing device includes a hemodialysis machine and an impeller; the hemodialysis machine is equipped with a mixing chamber, which has an inlet and an outlet. The inlet is divided into an A-solution inlet and a B-solution inlet, which are used to introduce A-solution and B-solution in equal proportions. The outlet is used to deliver the uniformly mixed A-solution and B-solution through the hemodialysis machine to the patient; the mixing chamber is divided into a drive chamber and a mixing chamber, which is used to mix A-solution and B-solution. The mixing chamber has an adjustment chamber, which is connected to the inlet.

[0010] The impeller is installed inside the A-liquid inlet. When A-liquid dialysate enters through the A-liquid inlet, the dialysate impacts the impeller, causing it to rotate. The impeller's rotation speed changes according to the inlet flow rate of A-liquid. A rotating assembly is located below the impeller and inside the drive chamber. A stirring wheel is located above the rotating assembly and inside the mixing chamber. An adjusting assembly is located on one side of the rotating assembly, containing two sets of telescopic plates. When A-liquid enters through the A-liquid inlet, the impeller drives the stirring wheel to rotate via the rotating assembly, achieving uniform mixing of the liquids. The rotating stirring wheel agitates the dialysate in the mixing chamber, ensuring uniform mixing of the two dialysates and preventing incorrect dialysate ratios from the outlet due to uneven mixing. The rotating assembly drives the telescopic plates to slide via the adjusting assembly, changing the inlet diameter. This change in inlet diameter alters the dialysate flow rate, ensuring that the two dialysates maintain a balanced mixture at different flow rates, thereby improving the effectiveness of hemodialysis.

[0011] Preferably, the rotating assembly includes a driving wheel, a driven wheel, and a rotating shaft; the driving wheel is fixedly installed with the impeller, and the driving wheel is rotatably installed in the adjusting cavity. Both the driving wheel and the driven wheel are arranged vertically, which enables a change in the direction of motion, converting the horizontal rotation of the driving wheel into the vertical rotation of the driven wheel; the driven wheel is fixedly connected to the rotating shaft; one end of the rotating shaft is located in the adjusting cavity, and a reciprocating crank is installed at the middle end of the rotating shaft; the reciprocating crank is eccentrically installed with the rotating shaft, and a push rod is rotatably installed on the reciprocating crank. The rotation of the rotating shaft drives the reciprocating crank to swing up and down, and the reciprocating crank drives the push rod to slide up and down. A vibrating plate is provided on the push rod, and the push rod and the vibrating plate are slidably installed; the vibrating plate is located in the driving cavity, and the vibrating plate is connected to the driving cavity. Vibration springs are arranged between the chambers, and vibration protrusions are arranged in a grid on the vibration plate. The vibration protrusions are used to strike the walls of the mixing chamber, thereby transmitting the vibration to the mixing chamber and causing the dialysate in the mixing chamber to vibrate, thus mixing the two sides. A drive column is fixedly installed on the vibration plate, and the reciprocating motion of the push rod, in conjunction with the vibration springs, realizes the reciprocating motion of the vibration plate. One end of the drive column is located in the mixing chamber and is rotatably installed with the stirring wheel. The drive column is provided with a drive protrusion. The stirring wheel has a drive groove that cooperates with the drive column. The drive column squeezes the drive groove on the stirring wheel through the drive protrusion, thereby driving the stirring wheel to rotate. The rotation of the stirring wheel stirs the dialysate in the mixing chamber, thereby making the dialysate uniformly mixed.

[0012] Preferably, the vibrating protrusion is a hemispherical structure. The density of the vibrating protrusion at both ends of the vibrating plate is less than that at the center of the vibrating plate. The hemispherical structure enables point contact between the vibrating protrusion and the mixing chamber, ensuring uniform diffusion of vibration. The density of the vibrating protrusion at both ends is less than that at the center, resulting in smaller vibrations at the inlet and outlet of the mixing chamber and larger vibrations in the middle of the mixing chamber. This avoids vibration affecting the entry and exit of dialysate. At the same time, the enhanced vibration effect in the middle promotes the mixing effect of the stirring wheel on the dialysate, enhancing the mixing of the dialysate.

[0013] Preferably, the drive channel is divided into a rotating section and a stationary section. The rotating section is a spiral channel, and the stationary section is a straight channel. The stationary section connects the beginning and end of the rotating section. Elastic blocks are provided at the connection points of the beginning and end of the stationary and rotating sections. When the drive column moves vertically upward, the drive protrusion squeezes the rotating section and drives the stirring wheel to rotate one revolution to mix the dialysate. At this time, the drive protrusion is located at the junction of the rotating and stationary sections. When the drive column moves vertically downward, the drive column slides down along the straight channel, and the drive protrusion does not drive the stirring wheel to rotate. This causes the stirring wheel to rotate in one direction, thereby reducing the generation of eddies and avoiding the generation of bubbles due to excessive stirring, which would affect the dialysis effect.

[0014] Preferably, the adjusting assembly includes a fixed bushing, a centrifugal plate, a push rod, a drive rack, and a telescopic assembly; the fixed bushing is located inside the adjusting cavity and is fixedly connected to the rotating shaft, and centrifugal springs are arranged in a ring array on the fixed bushing; one end of the centrifugal spring is fixedly connected to the fixed bushing, and the other end of the centrifugal spring is fixedly connected to the centrifugal plate; a push plate is provided inside the adjusting cavity, and the push plate is located on one side of the centrifugal plates arranged in a ring array; the rotation of the rotating shaft drives the fixed bushing to rotate synchronously, and the fixed bushing transmits the generated centrifugal force to the centrifugal plate, causing the centrifugal plate to move along the outer circumference, and the centrifugal plate contacts the push plate and pushes the push plate to slide; the push plate is fixedly connected to the push rod; the push rod has an inclined groove, and the push plate and the drive rack are arranged perpendicularly, the push rod slides synchronously with the push plate, and the push rod pushes the drive rack through the inclined groove. The sliding mechanism and the vertical arrangement of the push plate and the drive rack change the direction of movement. A return spring is provided between the drive rack and the inner wall of the adjustment cavity to reset the drive rack. The drive rack meshes with the telescopic assembly. There are two telescopic assemblies, located in the A liquid inlet and the B liquid inlet respectively, and they mesh with each other. The telescopic assembly in the A liquid inlet meshes with the drive rack. Two sets of telescopic plates 7 are slidably installed in the two telescopic assemblies. The drive rack meshes with the telescopic assembly of the A liquid inlet, which drives the telescopic plate to extend. The telescopic assembly of the A liquid inlet drives the telescopic assembly of the B liquid inlet to rotate, thereby driving the telescopic plate to extend and change the inner diameter of the inlet, so that the A liquid and B liquid dialysate enter in equal proportions.

[0015] Preferably, the bottom end of the push rod is provided with a limiting protrusion, and the inner wall of the adjustment cavity is provided with a sliding groove that cooperates with the limiting protrusion. The cooperation between the limiting protrusion and the sliding groove fixes the push rod, thereby realizing the step-by-step pushing of the push rod. Only when the centrifugal force reaches the set value can the push rod be pushed to slide by the push plate, thereby realizing the classification of liquid intake levels.

[0016] Preferably, the telescopic assembly includes a drive wheel, a fixed wheel, and a limiting post; the drive wheel meshes with a drive rack, the drive wheel has an arc-shaped groove in a circular array, and a fixed wheel is provided on one side of the drive wheel; the fixed wheel has a limiting groove corresponding to the arc-shaped groove, and a limiting post is slidably connected in the limiting groove, with the end of each limiting post inserted into the corresponding limiting groove; the number of telescopic plates in each group is the same as the number of limiting posts, and each telescopic plate is fixedly connected to the surface of the corresponding limiting post, with the telescopic plate located between the drive wheel and the fixed wheel; the drive wheel meshes with the drive rack and rotates, the rotation of the drive wheel compresses and pushes the limiting post through the arc-shaped groove, the limiting post maintains horizontal sliding under the action of the limiting groove, thereby causing the telescopic plate to slide and change the inner diameter of the liquid inlet.

[0017] Preferably, the diameter of the drive wheel inside the A liquid inlet is larger than the diameter of the drive wheel inside the B liquid inlet. When mixing the A liquid and B liquid dialysate, the required content of the A liquid dialysate is less than the content of the B liquid dialysate. Therefore, by limiting the diameter between the two drive wheels, the transmission ratio between them is changed, making the sliding distance of the telescopic plate inside the B liquid inlet greater than the sliding distance of the telescopic plate inside the A liquid inlet. This reduces the diameter of the drive wheel inside the B liquid inlet, thereby changing the transmission ratio and increasing the sliding distance of the telescopic plate inside the B liquid inlet, ensuring equal proportion of liquid intake.

[0018] Preferably, the telescopic plate has a buffer slope, and the buffer slope has a flow channel. The buffer slope is used to increase the angle between the dialysate and the telescopic plate, thereby reducing the friction between the two and ensuring the flow rate of the dialysate. The flow channel guides the dialysate, causing it to flow in a spiral motion, enhancing the kinetic energy of dialysate A and dialysate B, and promoting the uniform mixing of the dialysate.

[0019] An automated preparation process for hemodialysis concentrates includes the following steps:

[0020] S1. Prepare corresponding dialysate solutions A and B by mixing dry powder of solution A and solution B in a certain proportion. The pH value of dialysate solution A and solution B (bicarbonate dialysate) is 7.0-7.8. Place the prepared dialysate solution on the hemodialysis machine. Set an appropriate pH value for the bicarbonate dialysate solution to avoid metabolic acidosis caused by a low pH value.

[0021] S2. When the hemodialysis machine is started, dialysate A and dialysate B are delivered to the mixing chamber. Dialysate A first enters the mixing chamber from the dialysate A inlet. At the same time, dialysate B inlet delivers a specified proportion of dialysate B into the mixing chamber according to the amount of dialysate A inlet. The ratio of dialysate A to dialysate B is 1:1.225.

[0022] S3. When dialysate A enters through the A-liquid inlet, the impeller drives the rotating component to operate. The rotating component drives the regulating component to add dialysate B in proportion according to the amount of dialysate A entering. The dialysate after uniform mixing will be mixed with reverse osmosis water for dilution. The reverse osmosis water enters the liquid circuit of the hemodialysis machine through the ultrafiltration pump, and is then transported to the mixing chamber to dilute the concentration of the mixed dialysate, avoiding excessively high dialysate concentration. After uniform mixing, it is sent into the dialyzer to exchange blood with the patient for hemodialysis.

[0023] The present invention, by adopting the above technical solution, can bring the following beneficial effects:

[0024] 1. The present invention relates to an automatic hemodialysis concentrate mixing device and its operating process. The present invention achieves uniform mixing of dialysis fluid in a fixed proportion through the cooperation of rotating components and adjusting components, thereby ensuring the effect of dialysis treatment.

[0025] 2. The present invention provides an automatic hemodialysis concentrate mixing device and its operating process. The present invention achieves intermittent directional rotation of the stirring wheel through a rotating component, thereby avoiding the generation of eddies and thus avoiding the generation of bubbles, which could damage the patient's hemodialysis.

[0026] 3. The present invention provides an automatic hemodialysis concentrate preparation device and its operating process. The present invention reduces the control variables by adjusting the components, thereby reducing the difficulty of preparing the dialysate and improving work efficiency. Attached Figure Description

[0027] Figure 1 This is a partial cross-sectional view of the hemodialysis machine of the present invention;

[0028] Figure 2 This is a half-sectional schematic diagram of the mixing chamber of the present invention;

[0029] Figure 3 This is a vertical sectional view of the mixing chamber of the present invention;

[0030] Figure 4 For the present invention Figure 3 A magnified view of point A;

[0031] Figure 5 This is a schematic diagram of the rotating component and the adjusting component of the present invention;

[0032] Figure 6 This is a schematic diagram of the rotating component of the present invention;

[0033] Figure 7 This is a half-sectional schematic diagram of the rotating component of the present invention;

[0034] Figure 8 For the present invention Figure 7 A magnified view of point B;

[0035] Figure 9 This is a schematic diagram of the stirring wheel of the present invention;

[0036] Figure 10 For the present invention Figure 9 A magnified view of point C;

[0037] Figure 11 This is a schematic diagram of the adjustment component of the present invention;

[0038] Figure 12 This is a schematic diagram of the telescopic component of the present invention.

[0039] In the picture:

[0040] 1. Hemodialysis machine;

[0041] 2. Mixing chamber; 21. Liquid inlet; 211. Liquid A inlet; 212. Liquid B inlet; 22. Drive chamber; 23. Mixing chamber; 24. Adjustment chamber; 241. Sliding groove;

[0042] 3. Impeller;

[0043] 4. Rotating assembly; 41. Driving wheel; 42. Driven wheel; 43. Shaft; 44. Reciprocating crank; 45. Push rod; 46. Vibrating plate; 461. Vibrating protrusion; 47. Vibrating spring; 48. Drive column; 481. Drive protrusion;

[0044] 5. Agitator wheel; 51. Drive channel; 511. Rotating section; 512. Stationary section; 513. Elastic stop;

[0045] 6. Adjusting assembly; 61. Fixed bushing; 62. Centrifugal spring; 63. Centrifugal plate; 64. Push plate; 65. Push rod; 651. Inclined groove; 652. Limiting protrusion; 66. Drive rack; 67. Return spring; 68. Telescopic assembly; 681. Drive wheel; 6811. Arc groove; 682. Fixed wheel; 6821. Limiting groove; 683. Limiting post;

[0046] 7. Telescopic plate; 71. Buffer slope; 72. Drainage channel. Detailed Implementation

[0047] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0048] An automatic hemodialysis concentrate preparation device and its operating process according to the present invention:

[0049] like Figures 1 to 12As shown, an automatic hemodialysis concentrate mixing device includes a hemodialysis machine 1, a mixing chamber 2, an impeller 3, a rotating assembly 4, a stirring wheel 5, an adjusting assembly 6, and a telescopic plate 7. The hemodialysis machine 1 is equipped with the mixing chamber 2. The hemodialysis machine 1 of this invention is existing technology, such as the hemodialysis machine 1 manufactured by B. Braun. This hemodialysis machine 1 uses a pump to transport the dialysate into the mixing chamber 2. The mixing chamber 2 has an inlet 21 and an outlet. The inlet 21 is divided into an A-liquid inlet 211 and a B-liquid inlet 211. The hemodialysis machine 1 has a liquid inlet 212 and a liquid outlet 21 for the equal proportion of A-solution and B-solution dialysate entering the machine. The liquid outlet is used to deliver the uniformly mixed A-solution and B-solution dialysate to the patient through the hemodialysis machine 1. The mixing chamber 2 is divided into a drive chamber 22 and a mixing chamber 23. The mixing chamber 23 is used to mix A-solution and B-solution dialysate. The mixing chamber 2 is provided with an adjustment chamber 24, which is connected to the liquid inlet 21 and is connected to both the A-solution inlet 211 and the B-solution inlet 212.

[0050] The impeller 3 is installed inside the A-liquid inlet 211. A sealing ring is provided at the connection between the impeller 3 and the A-liquid inlet 211 to ensure the sealing of the A-liquid inlet 211. When A-liquid dialysate enters the A-liquid inlet 211, the A-liquid dialysate impacts the impeller 3, driving it to rotate. The impeller 3 changes its rotation speed according to the inlet flow rate of the A-liquid inlet 211. The A-liquid dialysate is pressurized by the pump and sent into the A-liquid inlet 211. After being pressurized by the pump, the A-liquid dialysate obtains a large flow velocity and impact force, thus satisfying the force required to drive the impeller 3 to rotate. A rotating assembly 4 is provided below the impeller 3, and the rotating assembly 4 is located inside the drive chamber 22. An agitator 5 is provided above the rotating assembly 4, and the agitator 5 is located inside the mixing chamber 23. The agitator 5 is rotatably connected to the inner wall of the mixing chamber 23. An installation groove is provided on the inner wall of the mixing chamber 23, and the agitator 5 is provided with a mounting groove. The mounting block, which is fitted with the mounting slot, has a convex structure, which restricts the vertical freedom of the stirring wheel 5, allowing it to only rotate. An adjustment component 6 is provided on one side of the rotating assembly 4, and two sets of telescopic plates 7 are installed within the adjustment component 6. When liquid A enters through the inlet 211, the impeller 3 drives the stirring wheel 5 to rotate via the rotating assembly 4, achieving uniform mixing of the liquid. The rotating stirring wheel 5 stirs the dialysate in the mixing chamber 2, ensuring uniform mixing of the two dialysates within the mixing chamber 2. This prevents an incorrect ratio of dialysate flowing from the outlet due to uneven mixing. The rotating assembly 4, through the adjustment component 6, drives the telescopic plates 7 to slide, changing the diameter of the inlet 21. This change in the diameter of the inlet 21 alters the amount of dialysate entering the chamber, ensuring that the two dialysates maintain a uniform mixing ratio even at different flow rates, thereby improving the effectiveness of hemodialysis.

[0051] The driving wheel 41 is fixedly installed with the impeller 3. The driving wheel 41 is rotatably installed in the adjusting cavity 24. The driving wheel 41 and the driven wheel 42 are arranged perpendicularly. Both the driving wheel 41 and the driven wheel 42 are bevel gears. The perpendicular arrangement realizes the change of motion direction, changing the horizontal rotation of the driving wheel 41 into the vertical rotation of the driven wheel 42. The driven wheel 42 is fixedly connected to the rotating shaft 43. One end of the rotating shaft 43 is located in the adjusting cavity 24, and a reciprocating crank 44 is installed in the middle of the rotating shaft 43. The reciprocating crank 44 is eccentrically installed with the rotating shaft 43. A push rod 45 is rotatably installed on the reciprocating crank 44. The rotation of the rotating shaft 43 drives the reciprocating crank 44 to swing up and down. The reciprocating crank 44 drives the push rod 45 to slide up and down. The reciprocating crank 44 and the rotating shaft 43 are eccentrically mounted, forming a crank-rocker mechanism, thereby realizing the reciprocating motion of the reciprocating crank 44. The reciprocating crank 44 then drives the push rod 45 to reciprocate up and down. A vibrating plate 46 is provided on the push rod 45, and the push rod 45 and the vibrating plate 46 are slidably mounted. The vibrating plate 46 is located in the drive cavity 22. Vibrating springs 47 are arrayed between the vibrating plate 46 and the drive cavity 22. Vibrating protrusions 461 are arranged in a grid on the vibrating plate 46. The vibrating protrusions 461 are used to strike the cavity wall of the mixing cavity 23, thereby transmitting the vibration to the mixing cavity 23, so that the mixing cavity 23... The dialysate vibrates, causing mixing on both sides. A drive column 48 is fixedly installed on the vibrating plate 46. The reciprocating motion of the push rod 45, in conjunction with the vibration spring 47, realizes the reciprocating motion of the vibrating plate 46. When the push rod 45 moves vertically upward under the action of the reciprocating crank 44, the push rod 45 pushes the vibrating plate 46 vertically upward, and at the same time, the vibrating plate 46 pulls the vibration spring 47. When the push rod 45 moves vertically downward under the action of the reciprocating crank 44, the vibrating plate 46 is no longer subjected to the force of the push rod 45 and moves downward to reset under the action of the vibration spring 47. The vibrating protrusion 461 has a hemispherical structure and is located at both ends of the vibrating plate 46. The density of the vibrating protrusion 461 at both ends is less than that at the center of the vibrating plate 46. The hemispherical structure enables point contact between the vibrating protrusion 461 and the mixing chamber 23, ensuring uniform diffusion of vibration. The density of the vibrating protrusion 461 at both ends is less than that at the center, resulting in smaller vibrations at the inlet 21 and outlet, and larger vibrations in the middle of the mixing chamber 2. This avoids vibration affecting the entry and exit of dialysate. At the same time, the enhanced vibration effect in the middle promotes the mixing effect of the stirring wheel 5 on the dialysate, enhancing the mixing of the dialysate. One end of the drive column 48 is located in the mixing chamber 23 and is rotatably mounted with the stirring wheel 5. The drive column 48 is provided with a drive protrusion 481.The stirring wheel 5 has a driving groove 51 that engages with the driving column 48. The driving column 48 presses the driving groove 51 on the stirring wheel 5 through the driving protrusion 481, thereby driving the stirring wheel 5 to rotate. The rotation of the stirring wheel 5 agitates the dialysate in the mixing chamber 23, thus making the dialysate uniformly mixed. The driving groove 51 is divided into a rotating section 511 and a stationary section 512. The rotating section 511 is a spiral groove, and the stationary section 512 is a straight groove. The stationary section 512 connects the beginning and end of the rotating section 511. Elastic blocks 513 are provided at the connection points between the stationary section 512 and the beginning and end of the rotating section 511. The elastic blocks 513 are used to limit the movement trajectory of the driving protrusion 481. When the driving protrusion 481 moves to the stationary section 512 and the rotating section 511, the elastic blocks 513 restrict the movement trajectory of the driving protrusion 481. When the segment 511 intersects, the elastic stop 513 generates resistance, which restricts the tendency of the drive protrusion 481 to move along the rotating segment 511, making it easier for the drive protrusion 481 to slide into the stationary segment 512. When the drive column 48 moves vertically upward, under the unidirectional limiting and guiding action of the elastic stop 513, the drive protrusion 481 squeezes the rotating segment 511 to drive the stirring wheel 5 to rotate one revolution to mix the dialysate. At this time, the drive protrusion 481 is located at the junction of the rotating segment 511 and the stationary segment 512. When the drive column 48 moves vertically downward, under the unidirectional limiting and guiding action of the elastic stop 513 at this point, the drive column 48 slides down along the straight groove, and the drive protrusion 481 will not drive the stirring wheel 5 to rotate, thus causing the stirring wheel 5 to rotate in one direction, thereby reducing the generation of eddies and avoiding the generation of bubbles due to excessive stirring, which would affect the dialysis effect.

[0052] When dialysate A enters through inlet 211, impeller 3 is impacted by the dialysate A, causing it to rotate. This rotation drives the driving wheel 41 at its bottom to rotate synchronously. The driving wheel 41 meshes with the driven wheel 42, driving the driven wheel 42 to rotate. The driven wheel 42's rotation drives the rotating shaft 43 to rotate synchronously. The rotating shaft 43 drives the reciprocating crank 44 to oscillate back and forth. The reciprocating crank 44 drives the push rod 45 to move up and down reciprocally. The push rod 45 and the vibration spring 47 work together to achieve the reciprocating motion of the vibrating plate 46. When the vibrating plate 46 moves upward, the vibrating plate... The vibrating protrusion 461 on the 46 strikes the inner wall of the mixing chamber 23, transmitting vibration to the mixing chamber 23 to promote the mixing of the dialysate. At the same time, the vibrating plate 46 drives the drive column 48 to move upward synchronously. The drive column 48 squeezes the drive groove 51 of the stirring wheel 5 through the drive protrusion 481, thereby driving the stirring wheel 5 to rotate and mix the dialysate. The impeller 3 controls the stirring wheel 5 to achieve different speeds according to the different liquid inlet volume through the rotating component 4, so as to meet the uniform mixing of dialysate with different contents. At the same time, the vibration plate 46 strikes the mixing chamber 23 to promote the mixing of the dialysate.

[0053] The fixed bushing 61 is located inside the adjusting cavity 24 and is fixedly connected to the rotating shaft 43. Centrifugal springs 62 are arranged in a ring array on the fixed bushing 61. One end of each centrifugal spring 62 is fixedly connected to the fixed bushing 61, and the other end is fixedly connected to a centrifugal plate 63. A push plate 64 is provided inside the adjusting cavity 24, located on one side of the centrifugal plates 63 arranged in a ring array. The impeller 3 changes its rotation speed according to different liquid inflow rates, thereby causing the rotating shaft 43 to rotate at different speeds, which in turn drives the fixed shaft 43. The fixed bushing 61 rotates synchronously, and the centrifugal force changes synchronously according to the speed of the fixed bushing 61. This causes the centrifugal spring 62 to be stretched to different degrees, pushing the centrifugal plate 63 to move different distances. The rotation of the rotating shaft 43 drives the fixed bushing 61 to rotate synchronously. The fixed bushing 61 transmits the generated centrifugal force to the centrifugal plate 63, causing the centrifugal plate 63 to move along the outer circumference. The centrifugal plate 63 contacts the push plate 64, pushing the push plate 64 to slide. The push plate 64 ensures continuous contact with the centrifugal plate 63, realizing the conversion of centrifugal force and ensuring the continuous conversion of centrifugal force.

[0054] The push plate 64 is fixedly connected to the push rod 65. The push rod 65 has an inclined groove 651. The push plate 64 and the drive rack 66 are both arranged perpendicularly. The push rod 65 slides synchronously with the push plate 64. A limiting protrusion 652 is provided at the bottom of the push rod 65. A sliding groove 241 that cooperates with the limiting protrusion 652 is provided on the inner wall of the adjusting cavity 24. The cooperation between the limiting protrusion 652 and the sliding groove 241 fixes the push rod 65, thereby enabling the push rod 65 to be pushed step-by-step. Only when the centrifugal force reaches the set value can the push plate 64 push the push rod 65 to slide, thus achieving the classification of liquid inlet volume. When the liquid inlet volume fluctuates slightly, the centrifugal force changes slightly, leading to the circular motion of the centrifugal plate 63. When the circumferential motion contracts, it will not cause the push rod 65 to slide, thus ensuring the stability of the change in the inner diameter of the inlet 21. At the same time, since the centrifugal plate 63 cannot form a complete circle when it makes a circumferential motion, there will be a partial gap in the contact between the centrifugal plate 63 and the push plate 64. During this time, the opening and closing of the limiting protrusion 652 and the sliding groove 241 ensures the stable movement of the limiting plate. The push rod 65 pushes the drive rack 66 to slide through the inclined groove 651. The push plate 64 and the drive rack 66 are arranged vertically to change the direction of movement. A return spring 67 is provided between the drive rack 66 and the inner wall of the adjustment cavity 24. The return spring 67 is used to realize the return of the drive rack 66. The drive rack 66 meshes with the telescopic component 68.

[0055] Two telescopic components 68 are provided, located in the A-liquid inlet 211 and the B-liquid inlet 212 respectively, and meshing with each other. A sealing ring is provided between each telescopic component 68 and its corresponding inlet, thus ensuring the seal between the A-liquid inlet 211 and the B-liquid inlet 212 and preventing dialysate from entering the regulating chamber 24. The telescopic component 68 in the A-liquid inlet 211 meshes with the drive rack 66. Two sets of telescopic plates 7 are slidably installed in the two telescopic components 68 respectively. A buffer slope 71 is provided on each telescopic plate 7, and a drainage groove 72 is provided on the buffer slope 71. The buffer slope 71 is used to increase the angle between the dialysate and the telescopic plate 7, thereby reducing the friction between them. To ensure the flow rate of the dialysate, the guide channel 72 guides the dialysate, causing it to flow in a spiral motion, enhancing the kinetic energy of dialysate A and dialysate B, and promoting uniform mixing of the dialysate. The drive rack 66 engages with the telescopic component 68 of the A liquid inlet 211, which drives the telescopic plate 7 to extend. The telescopic component 68 of the A liquid inlet 211 drives the telescopic component 68 of the B liquid inlet 212 to rotate, thereby driving the telescopic plate 7 to extend and change the inner diameter of the inlet 21, so that dialysate A and dialysate B enter in equal proportion. At this time, only the amount of dialysate A needs to be controlled to control the proportion of dialysate A and dialysate B entering, thus reducing the difficulty of control.

[0056] The telescopic assembly 68 includes a drive wheel 681, a fixed wheel 682, and a limiting post 683. The drive wheel 681 meshes with a drive rack 66. The drive wheel 681 has an arc-shaped groove 6811 arranged in a ring. A fixed wheel 682 is provided on one side of the drive wheel 681. A limiting groove 6821 corresponding to the arc-shaped groove 6811 is opened on the fixed wheel 682. A limiting post 683 is slidably connected in the limiting groove 6821, and the end of each limiting post 683 is inserted into the corresponding limiting groove 6821. The number of telescopic plates 7 in each group is the same as the number of limiting posts 683, and each telescopic plate 7 is fixedly connected to the surface of the corresponding limiting post 683. The telescopic plate 7 is located between the drive wheel 681 and the fixed wheel 682. The drive wheel 681 meshes with the drive rack 66 and rotates. The rotation of the drive wheel 681 compresses and pushes the limiting post 683 through the arc-shaped groove 6811. Position column 683 maintains horizontal sliding under the action of limiting groove 6821, thereby driving telescopic plate 7 to slide and change the inner diameter of inlet 21; the diameter of drive wheel 681 in A liquid inlet 211 is larger than the diameter of drive wheel 681 in B liquid inlet 212. When A liquid dialysate and B liquid dialysate are mixed, the required content of A liquid dialysate is less than the content of B liquid dialysate. Therefore, by limiting the diameter between the two drive wheels 681, the transmission ratio between the two is limited, so that the sliding distance of telescopic plate 7 in B liquid inlet 212 is greater than the sliding distance of telescopic plate 7 in A liquid inlet 211, thereby reducing the diameter of drive wheel 681 in B liquid inlet 212, thereby changing the transmission ratio, expanding the sliding distance of telescopic plate 7 in B liquid inlet 212, ensuring equal entry. A sealing ring is provided between drive wheel 681 and fixed wheel 682 and inlet 21 to ensure the sealing of inlet 21.

[0057] The rotation of the rotating shaft 43 drives the fixed bushing 61 to rotate synchronously. The rotation of the fixed bushing 61 generates centrifugal force, which drives the centrifugal spring 62 to stretch. The centrifugal spring 62 pushes the centrifugal plate 63 to slide. The centrifugal plate 63 pushes the push plate 64 to slide horizontally. The push plate 64 drives the push rod 65 to slide synchronously. The push rod 65 pushes the drive rack 66 to slide through the inclined groove 651. The drive rack 66 meshes with the drive wheel 681 of the A liquid inlet 211. The rotation of the drive wheel 681 of the A liquid inlet 211 drives the drive wheel 681 of the B liquid inlet 212 to rotate. The rotation of the drive wheel 681 squeezes and pushes the limiting post 683 through the arc groove 6811. The limiting post 683 remains horizontally sliding under the action of the limiting groove 6821, thereby driving the telescopic plate 7 to slide.

[0058] In the automatic hemodialysis concentrate preparation device of the present invention, when the dialysate A enters through the dialysate inlet 211, the impeller 3 is impacted by the dialysate A and rotates. The rotation of the impeller 3 drives the driving wheel 41 at the bottom to rotate synchronously. The driving wheel 41 meshes with the driven wheel 42, thereby driving the driven wheel 42 to rotate. The rotation of the driven wheel 42 drives the rotating shaft 43 to rotate synchronously. The rotating shaft 43 drives the reciprocating crank 44 to oscillate back and forth. The reciprocating crank 44 drives the push rod 45 to move up and down reciprocally. When the push rod 45 moves upward, it pushes the vibrating plate 46 to move upward synchronously. The vibrating plate 46 pulls the vibration spring 47. At the same time, the vibrating plate 46 drives the drive column 48 to rotate synchronously. The drive column 48 drives the stirring wheel 5 to rotate. When the push rod 45 moves downward, it no longer contacts the vibrating plate 46. The vibration spring 47 pulls the vibrating plate 46 to reset. The downward movement of the vibrating plate 46 drives the drive column 48 to move vertically downward.

[0059] Simultaneously, the rotation of the rotating shaft 43 drives the fixed bushing 61 to rotate synchronously. The rotation of the fixed bushing 61 generates centrifugal force that drives the centrifugal spring 62 to stretch. The centrifugal spring 62 pushes the centrifugal plate 63 to slide. The centrifugal plate 63 pushes the push plate 64 to slide horizontally. The push plate 64 drives the push rod 65 to slide synchronously. The push rod 65 pushes the drive rack 66 to slide through the inclined groove 651. The drive rack 66 squeezes the reset spring 67. At the same time, the drive rack 66 meshes with the drive wheel 681 of the A liquid inlet 211. The rotation of the drive wheel 681 of the A liquid inlet 211 drives the drive wheel 681 of the B liquid inlet 212 to rotate. The rotation of the drive wheel 681 squeezes and pushes the limiting post 683 through the arc groove 6811. The limiting post 683 remains horizontally sliding under the action of the limiting groove 6821, thereby driving the telescopic plate 7 to slide.

[0060] When the hemodialysis machine 1 stops working, the impeller 3 stops rotating, which in turn causes the rotating shaft 43 to stop rotating. The fixed bushing 61 stops rotating synchronously, the centrifugal force disappears, the centrifugal spring 62 pulls the centrifugal plate 63 to reset, the drive rack 66 is no longer subjected to the squeezing force of the push plate 64, the drive rack 66 is reset under the action of the reset spring 67, the drive rack 66 pushes the push rod 65 to reset, and the push rod 65 pushes the push plate 64 to reset.

[0061] This invention provides an automatic hemodialysis concentrate preparation device and its operating process. Many methods and approaches exist for implementing this technical solution; the above description is merely a preferred embodiment of the invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this invention, and these improvements and modifications should also be considered within the scope of protection of this invention. All components not explicitly stated in this embodiment can be implemented using existing technologies.

Claims

1. An automatic hemodialysis concentrate mixing device, characterized in that: Includes a hemodialysis machine (1) and an impeller (3); The hemodialysis machine (1) is equipped with a mixing chamber (2), and the mixing chamber (2) is provided with an inlet (21) and an outlet. The inlet (21) is divided into an A liquid inlet (211) and a B liquid inlet (212). The mixing chamber (2) is divided into a driving chamber (22) and a mixing chamber (23). An adjustment chamber (24) is provided on the mixing chamber (2), and the adjustment chamber (24) is connected to the liquid inlet (21). The impeller (3) is installed in the liquid A inlet (211). A rotating assembly (4) is provided below the impeller (3). The rotating assembly (4) is located inside the drive chamber (22). A stirring wheel (5) is provided above the rotating assembly (4). The stirring wheel (5) is located inside the mixing chamber (23). An adjustment assembly (6) is provided on one side of the rotating assembly (4). Two sets of telescopic plates (7) are provided inside the adjustment assembly (6). When the liquid A inlet (211) is filled, the impeller (3) drives the stirring wheel (5) to rotate through the rotating assembly (4) to achieve uniform mixing of the liquid. The rotating assembly (4) includes a driving wheel (41), a driven wheel (42), and a rotating shaft (43). The driving wheel (41) is fixedly installed with the impeller (3), the driving wheel (41) is rotatably installed in the regulating cavity (24), and the driving wheel (41) and the driven wheel (42) are arranged perpendicularly. The driven wheel (42) is fixedly connected to the rotating shaft (43); One end of the rotating shaft (43) is located in the adjusting cavity (24), and a reciprocating crank (44) is installed in the middle of the rotating shaft (43). The reciprocating crank (44) is eccentrically mounted to the shaft (43), and a push rod (45) is rotatably mounted on the reciprocating crank (44). The top rod (45) is provided with a vibrating plate (46), and the top rod (45) and the vibrating plate (46) are slidably installed; The vibrating plate (46) is located inside the driving cavity (22). Vibrating springs (47) are arranged between the vibrating plate (46) and the driving cavity (22). Vibrating protrusions (461) are arranged in a grid on the vibrating plate (46). A driving column (48) is fixedly installed on the vibrating plate (46). One end of the drive column (48) is located in the mixing chamber (23) and is rotatably mounted with the stirring wheel (5); the drive column (48) is provided with a drive protrusion (481). The stirring wheel (5) is provided with a drive groove (51) that cooperates with the drive column (48); The drive groove (51) is divided into a rotating section (511) and a stationary section (512). The rotating section (511) is a spiral groove, and the stationary section (512) is a straight groove. The stationary section (512) connects the beginning and end of the rotating section (511). Elastic blocks (513) are provided at the connection between the beginning and end of the stationary section (512) and the rotating section (511). The rotating component (4) drives the telescopic plate (7) to slide through the adjusting component (6) to change the diameter of the liquid inlet (21).

2. The automatic hemodialysis concentrate mixing device according to claim 1, characterized in that: The vibration bump (461) is a hemispherical structure, and the density of the vibration bump (461) at both ends of the vibration plate (46) is less than the density at the center of the vibration plate (46).

3. The automatic hemodialysis concentrate mixing device according to claim 1, characterized in that: The adjustment assembly (6) includes a fixed bushing (61), a centrifugal plate (63), a push rod (65), a drive rack (66), and a telescopic assembly (68). The fixed bushing (61) is located in the adjustment cavity (24) and is fixedly connected to the rotating shaft (43). Centrifugal springs (62) are arranged in a ring on the fixed bushing (61). One end of the centrifugal spring (62) is fixedly connected to the fixed bushing (61), and the other end of the centrifugal spring (62) is fixedly connected to the centrifugal plate (63); The regulating cavity (24) is provided with a push plate (64), which is located on one side of the centrifugal plates (63) arranged in a ring array. The push plate (64) is fixedly connected to the push rod (65); The push rod (65) has a slanted groove (651), and the push plate (64) and the drive rack (66) are arranged perpendicularly. A return spring (67) is provided between the drive rack (66) and the inner wall of the adjustment cavity (24), and the drive rack (66) meshes with the telescopic assembly (68); There are two telescopic components (68). The two telescopic components (68) are located in the A liquid inlet (211) and the B liquid inlet (212) respectively, and they mesh with each other. The telescopic component (68) in the A liquid inlet (211) meshes with the drive rack (66). The two sets of telescopic plates (7) are slidably installed in the two telescopic components (68) respectively.

4. The automatic hemodialysis concentrate mixing device according to claim 3, characterized in that: The bottom end of the push rod (65) is provided with a limiting protrusion (652), and the inner wall of the adjustment cavity (24) is provided with a sliding groove (241) that cooperates with the limiting protrusion (652).

5. The automatic hemodialysis concentrate mixing device according to claim 3, characterized in that: The telescopic assembly (68) includes a drive wheel (681); The drive wheel (681) meshes with the drive rack (66), the drive wheel (681) has an arc-shaped groove (6811) in an annular array, and a fixed wheel (682) is provided on one side of the drive wheel (681). The fixed wheel (682) is provided with a limiting groove (6821) corresponding to the arc groove (6811). A limiting post (683) is slidably connected in the limiting groove (6821), and the end of each limiting post (683) is inserted into the corresponding limiting groove (6821). The number of each set of telescopic plates (7) is the same as the number of the limiting posts (683), and each telescopic plate (7) is fixedly connected to the surface of the corresponding limiting post (683). The telescopic plate (7) is located between the drive wheel (681) and the fixed wheel (682).

6. The automatic hemodialysis concentrate mixing device according to claim 5, characterized in that: The diameter of the drive wheel (681) inside the A liquid inlet (211) is larger than the diameter of the drive wheel (681) inside the B liquid inlet (212).

7. The automatic hemodialysis concentrate mixing device according to claim 5, characterized in that: The telescopic plate (7) is provided with a buffer slope (71), and the buffer slope (71) is provided with a drainage groove (72).

8. An automatic hemodialysis concentrate preparation process, applicable to the automatic hemodialysis concentrate preparation equipment described in any one of claims 1-7, characterized in that: The process includes the following steps: S1. Prepare the dry powder of solution A and the dry powder of solution B into corresponding dialysis solutions A and B according to the proportion. The pH value of the dialysis solution A and the dialysis solution B is 7.0-7.

8. Place the prepared dialysis solution on the hemodialysis machine (1). S2. The hemodialysis machine (1) starts to deliver A solution dialysate and B solution dialysate to the mixing chamber (2). A solution dialysate first enters the mixing chamber (2) from the A solution inlet (211). At the same time, the B solution inlet (212) will deliver a specified proportion of B solution dialysate into the mixing chamber (2) according to the amount of A solution inlet (211). S3. When the A liquid dialysis solution enters through the A liquid inlet (211), the impeller (3) drives the rotating component (4) to operate. The rotating component (4) drives the regulating component (6) to add the B liquid dialysis solution in proportion according to the inlet volume of the A liquid inlet (211). Then, the rotating component (4) mixes the A liquid dialysis solution and the B liquid dialysis solution evenly.

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