Automatic proportioning equipment for hemodialysis concentrate and operation process of automatic proportioning equipment

Abstract

The invention relates to the technical field of medical equipment, in particular to hemodialysis concentrate automatic proportioning equipment and an operation process thereof, and the hemodialysis concentrate automatic proportioning equipment comprises a hemodialysis machine, a mixing chamber, an impeller, a rotating assembly, a stirring wheel, an adjusting assembly and a telescopic plate; a mixing chamber is mounted in the dialysis machine, liquid inlets and liquid outlets are formed in the mixing chamber, and the liquid inlets are divided into a liquid A inlet and a liquid B inlet; an adjusting cavity is formed in the mixing chamber, a rotating assembly is arranged below the impeller and rotationally located in the driving cavity, a stirring wheel is arranged above the rotating assembly and located in the mixing cavity, an adjusting assembly is arranged on one side of the rotating assembly, a telescopic plate is installed in the adjusting assembly, and the impeller drives the stirring wheel to rotate through the adjusting assembly to achieve uniform mixing of liquid. According to the hemodialysis concentrate uniform mixing device, equal-ratio uniform mixing of hemodialysis concentrates is achieved through centrifugal force, the dialysis effect is improved, and generation of waste liquid is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of medical equipment, in particular to a hemodialysis concentrate automatic proportioning device and an operating process thereof. Background Art

[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 semipermeable membrane of the dialyzer to remove small molecule metabolic waste or harmful substances in the blood, thereby achieving the purpose of correcting the patient's water load, electrolyte disorder, and acid-base imbalance.

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

[0004] During the process of uniformly mixing the dialysate A and the dialysate B, an imbalance in the ratio may occur, which will lead to low conductivity and decreased osmotic pressure, thus causing hemolysis. At the same time, the amount of waste liquid will increase, resulting in a waste of dialysate.

[0005] To this end, the prior art proposes a hemodialysis machine. The hemodialysis machine in the invention uses A dry powder cylinder, B dry powder cylinder and a balance chamber to effectively realize the use of A powder and B powder for hemodialysis, thereby 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 ratio of dialysate, and at the same time, it leads to an increase in waste liquid.

[0006] In view of this, the present invention proposes an automatic proportioning device for hemodialysis concentrate and an operating process thereof. Summary of the invention

[0007] The technical problem to be solved by the present invention is to provide a hemodialysis concentrate automatic proportioning device and an operating process thereof in view of the deficiencies in the above-mentioned prior art.

[0008] In order to solve the above technical problems, the technical solution adopted by the present invention is: an automatic proportioning device for hemodialysis concentrate and its operating process: An automatic proportioning device for hemodialysis concentrate comprises a hemodialysis machine and an impeller; a mixing chamber is installed in the hemodialysis machine, a liquid inlet and a liquid outlet are provided on the mixing chamber, the liquid inlet is divided into a liquid A inlet and a liquid B inlet, the liquid inlet is used for equal proportion of liquid A dialysate and liquid B dialysate to enter, the liquid outlet is used for delivering the evenly mixed liquid A dialysate and liquid B dialysate through the hemodialysis machine for use by patients; the mixing chamber is divided into a driving chamber and a mixing chamber, the mixing chamber is used for mixing liquid A dialysate and liquid B dialysate, and a regulating chamber is provided on the mixing chamber, the regulating chamber is communicated with the liquid inlet; The impeller is installed in the A liquid inlet. When the A liquid dialysate enters the A liquid inlet, the A liquid dialysate impacts the impeller to drive the impeller to rotate. The impeller changes its rotation speed according to the amount of liquid inlet of the A liquid. A rotating component is provided below the impeller, and the rotating component is located inside the driving chamber. A stirring wheel is provided above the rotating component, and the stirring wheel is located in the mixing chamber. An adjusting component is provided on one side of the rotating component, and two groups of telescopic plates are arranged in the adjusting component. When the A liquid inlet enters the liquid, the impeller drives the stirring wheel to rotate through the rotating component to achieve uniform mixing of the liquid. The rotating stirring wheel rotates to stir the dialysate in the mixing chamber, so that the two dialysates are evenly mixed in the mixing chamber, so as to avoid the wrong proportion of the dialysate flowing out of the liquid outlet due to uneven mixing. The rotating component drives the telescopic plate to slide through the adjusting component to achieve the change of the diameter of the liquid inlet. The change of the diameter of the liquid inlet changes the amount of dialysate inlet, so that the two dialysates can still maintain equal proportion mixing at different flow rates, thereby improving the effect of hemodialysis.

[0009] Preferably, the rotating assembly includes a driving wheel, a driven wheel and a rotating shaft; the driving wheel is fixedly installed with the impeller, the driving wheel is rotatably installed in the adjusting chamber, the driving wheel and the driven wheel are arranged vertically, and the vertical arrangement realizes the change of the movement direction, and the horizontal rotation of the driving wheel is converted into the vertical rotation of the driven wheel; the driven wheel is fixedly connected with the rotating shaft; one end of the rotating shaft is located in the adjusting chamber, 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, and 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, and a vibration plate is provided on the push rod, and the push rod is slidably installed with the vibration plate; the vibration plate is located in the driving chamber, and the vibration plate is rotatably installed with the driving chamber. There are vibration springs in array between the cavities, and there are vibration protrusions in grid array on the vibration plate. The vibration protrusions are used to knock on the cavity wall of the mixing cavity, and then transmit the vibration to the mixing cavity, so that the dialysate in the mixing cavity vibrates and mixes on both sides. A driving column is fixedly installed on the vibration plate, and the reciprocating motion of the top rod cooperates with the vibration spring to realize the reciprocating motion of the vibration plate; one end of the driving column is located in the mixing cavity and is rotatably installed with the stirring wheel; a driving protrusion is provided on the driving column; a driving groove matched with the driving column is opened on the stirring wheel, and the driving column squeezes the driving groove on the stirring wheel through the driving protrusion, and then drives the stirring wheel to rotate through the driving groove, and the rotation of the stirring wheel stirs the dialysate in the mixing cavity, so that the dialysate is evenly mixed.

[0010] Preferably, the vibration bump is a hemispherical structure, and the density of the vibration bumps at the two ends of the vibration plate is less than that at the center of the vibration plate. The hemispherical structure realizes point contact between the vibration bump and the mixing chamber, thereby ensuring uniform diffusion of vibration. The density of the vibration bumps at the two ends is less than that at the center, so that the vibration at the inlet and outlet of the mixing chamber is smaller, the vibration at the middle end of the mixing chamber is larger, and the vibration at the inlet and outlet is small, thereby avoiding the influence of vibration on the entry and output of the dialysate. At the same time, the vibration effect at the middle end is enhanced to promote the mixing effect of the stirring wheel on the dialysate, thereby enhancing the mixing of the dialysate.

[0011] Preferably, the driving groove is divided into a rotating section and a stationary section, the rotating section is a spiral groove, the stationary section is a straight groove, the stationary section connects the head end and the tail end of the rotating section, and elastic blocks are provided at the connection between the head end and the tail end of the stationary section and the rotating section. When the driving column moves vertically upward, the driving protrusion squeezes the rotating section to drive the stirring wheel to rotate one circle to mix the dialysate. At this time, the driving protrusion is located at the junction of the rotating section and the stationary section. When the driving column moves vertically downward, the driving column slides down along the straight groove, and the driving protrusion will not drive the stirring wheel to rotate, so that the stirring wheel rotates in one direction, thereby reducing the generation of eddy currents and avoiding the generation of bubbles due to excessive stirring, which affects the dialysis effect.

[0012] Preferably, the adjusting assembly includes a fixed shaft sleeve, a centrifugal plate, a push rod, a driving rack and a telescopic assembly; the fixed shaft sleeve is located in the adjusting chamber and is fixedly connected to the rotating shaft, and a centrifugal spring is arranged in an annular array on the fixed shaft sleeve; one end of the centrifugal spring is fixedly connected to the fixed shaft sleeve, and the other end of the centrifugal spring is fixedly connected to the centrifugal plate; a push plate is arranged inside the adjusting chamber, and the push plate is located on one side of the centrifugal plates distributed in an annular array; the rotation of the rotating shaft drives the fixed shaft sleeve to rotate synchronously, and the fixed shaft sleeve transmits the generated centrifugal force to the centrifugal plate, so that the centrifugal plate moves along the outer side of the circumference, and the centrifugal plate contacts the push plate to push the push plate to slide; the push plate is fixedly connected to the push rod; an inclined groove is provided on the push rod, and the push plate and the driving rack are arranged vertically, the push rod slides synchronously with the push plate, and the push rod pushes the driving rack through the inclined groove The push plate and the driving rack slide, and the push plate and the driving rack realize the change of movement direction by vertical arrangement; a reset spring is provided between the driving rack and the inner wall of the adjusting chamber, and the reset spring is used to realize the reset of the driving rack, and the driving rack is meshed with the telescopic component; the telescopic components are provided with two, and the two telescopic components are respectively located in the A liquid inlet and the B liquid inlet, and meshed with each other; the telescopic component in the A liquid inlet is meshed with the driving rack, and the two groups of telescopic plates 7 are respectively slidably installed in the two telescopic components, and the driving rack is meshed with the telescopic component of the A liquid inlet, and the telescopic plate is driven to extend through the telescopic component of the A liquid inlet, and the telescopic component of the A liquid inlet drives the telescopic component of the B liquid inlet to rotate, thereby driving the telescopic plate to extend to change the inner diameter of the inlet, so that the A liquid dialysate and the B liquid dialysate enter in equal proportions.

[0013] Preferably, a limiting protrusion is provided at the bottom end of the push rod, and a sliding groove cooperating with the limiting protrusion is opened on the inner wall of the adjusting cavity. The cooperation between the limiting protrusion and the sliding groove realizes the fixation of the push rod, and then realizes the step-by-step pushing of the push rod. Only when the centrifugal force reaches the set size can the push rod be pushed to slide by the push plate, thereby realizing the graded division of the liquid intake amount.

[0014] Preferably, the telescopic assembly includes a driving wheel, a fixed wheel and a limiting column; the driving wheel is meshed with a driving rack, the driving wheel annular array has an arc-shaped groove, and a fixed wheel is provided on one side of the driving wheel; a limiting groove corresponding to the arc-shaped groove is opened on the fixed wheel, and the limiting column is slidably connected in the limiting groove, and the end of each limiting column is respectively inserted into the corresponding limiting groove; the number of the telescopic plates in each group is the same as the number of the limiting columns, and each of the telescopic plates is fixedly connected to the surface of the corresponding limiting column, and the telescopic plate is located between the driving wheel and the fixed wheel; the driving wheel is meshed with the driving rack and then rotates, and the rotation of the driving wheel squeezes and pushes the limiting column through the arc-shaped groove, and the limiting column keeps horizontal sliding under the action of the limiting groove, thereby driving the telescopic plate to slide and change the inner diameter of the liquid inlet.

[0015] Preferably, the diameter of the driving wheel in the A liquid inlet is larger than the diameter of the driving wheel in the B liquid inlet. When the A liquid dialysate and the B liquid dialysate are proportioned, 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 driving wheels, the transmission ratio between the two is changed, so that the sliding distance of the telescopic plate in the B liquid inlet is greater than the sliding distance of the telescopic plate in the A liquid inlet, thereby reducing the diameter of the driving wheel in the B liquid inlet, thereby realizing the change of the transmission ratio, expanding the sliding distance of the telescopic plate in the B liquid inlet, and ensuring equal-ratio entry.

[0016] Preferably, a buffer slope is provided on the telescopic plate, and a drainage groove is provided on the buffer slope. The buffer slope is used to enhance the angle between the dialysate and the telescopic plate, thereby reducing the friction between the two, thereby ensuring the flow rate of the dialysate. The drainage groove guides the dialysate, causing the dialysate to flow in a spiral rotation, thereby enhancing the kinetic energy of liquid A dialysate and liquid B dialysate and promoting uniform mixing of the dialysate.

[0017] An automatic proportioning operation process for hemodialysis concentrate, the operation process comprising the following steps: S1. Prepare the A liquid dry powder and the B liquid dry powder into the corresponding A liquid dialysate and B liquid dialysate respectively according to the proportion, wherein the pH value of the A liquid dialysate and the B liquid dialysate bicarbonate dialysate is 7.0-7.8, and place the prepared dialysate on the hemodialysis machine; prepare the appropriate pH value of the bicarbonate dialysate to avoid metabolic acidosis caused by a low pH value; S2, the hemodialysis machine is started to transport the A liquid dialysate and the B liquid dialysate into the mixing chamber, the A liquid dialysate first enters the mixing chamber from the A liquid inlet, and at the same time, the B liquid inlet will transport a specified proportion of the B liquid dialysate into the mixing chamber according to the liquid inlet amount of the A liquid inlet, and the ratio of the A liquid dialysate to the B liquid dialysate is 1:1.225; S3. When the A-liquid dialysate enters through the A-liquid inlet, the impeller drives the rotating component to operate. The rotating component drives the adjusting component to put in the B-liquid dialysate in equal proportion according to the content of the A-liquid dialysate 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 mixed dialysate to avoid excessive concentration of the dialysate. After uniform mixing, it is sent to the dialyzer to exchange with the patient's blood for hemodialysis.

[0018] The present invention adopts the above technical solution to bring the following beneficial effects: 1. The present invention discloses an automatic proportioning device for hemodialysis concentrate and its operating process. The present invention realizes uniform mixing of dialysate at a certain ratio through the cooperation of a rotating component and an adjusting component, thereby ensuring the effect of dialysis treatment.

[0019] 2. The automatic proportioning device for hemodialysis concentrate and its operating process of the present invention realize intermittent directional rotation of the stirring wheel through a rotating component, thereby avoiding the generation of eddy currents, thereby avoiding the generation of bubbles and causing damage to the patient's hemodialysis.

[0020] 3. The automatic proportioning device for hemodialysis concentrate of the present invention and its operating process achieves the reduction of control variables through adjusting components, reduces the difficulty of dialysate proportioning, and improves work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a partial cross-sectional view of the hemodialysis machine of the present invention; Figure 2 A half-section schematic diagram of a mixing chamber of the present invention; Figure 3 A vertical cross-sectional view of a mixing chamber of the present invention; Figure 4 For the present invention Figure 3 A local enlarged view of point A; Figure 5 It is a schematic diagram of the rotating assembly and the adjusting assembly of the present invention; Figure 6 It is a schematic diagram of a rotating assembly of the present invention; Figure 7 It is a half-section schematic diagram of the rotating assembly of the present invention; Figure 8 For the present invention Figure 7 A local enlarged view of point B; Fig. 9 A schematic diagram of the stirring wheel of the present invention; Fig.10 For the present invention Fig. 9 A local enlarged view of point C; Fig.11 It is a schematic diagram of the adjustment component of the present invention; Fig.12 It is a schematic diagram of the telescopic assembly of the present invention.

[0022] In the figure: 1. Hemodialysis machine; 2. Mixing chamber; 21. Liquid inlet; 211. Liquid A inlet; 212. Liquid B inlet; 22. Driving chamber; 23. Mixing chamber; 24. Adjusting chamber; 241. Sliding groove; 3. Impeller; 4. Rotating assembly; 41. Driving wheel; 42. Driven wheel; 43. Rotating shaft; 44. Reciprocating crank; 45. Push rod; 46. Vibrating plate; 461. Vibrating bump; 47. Vibrating spring; 48. Driving column; 481. Driving bump; 5. stirring wheel; 51. driving groove; 511. rotating section; 512. stationary section; 513. elastic stopper; 6. Adjustment assembly; 61. Fixed sleeve; 62. Centrifugal spring; 63. Centrifugal plate; 64. Push plate; 65. Push rod; 651. Bevel groove; 652. Limiting convex block; 66. Driving rack; 67. Return spring; 68. Telescopic assembly; 681. Driving wheel; 6811. Arc groove; 682. Fixed wheel; 6821. Limiting groove; 683. Limiting column; 7. Telescopic plate; 71. Buffer slope; 72. Drainage trough. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] The present invention discloses an automatic proportioning device for hemodialysis concentrate and its operation process: like Figures 1 to 12 As shown, an automatic proportioning device for hemodialysis concentrate 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 installed with a mixing chamber 2, and the hemodialysis machine 1 of the present invention is a prior art, such as a hemodialysis machine 1 produced by B. Braun Aldridge, which transports the dialysate through a pump to allow it to enter the mixing chamber 2; the mixing chamber 2 is provided with a liquid inlet 21 and a liquid outlet, and the liquid inlet 21 is divided into a liquid A inlet 211 and a liquid B inlet 212. The liquid inlet 212 is used for equal proportions of A liquid dialysate and B liquid dialysate to enter, and the liquid outlet is used to transport the evenly mixed A liquid dialysate and B liquid dialysate through the hemodialysis machine 1 to the patient for use; the mixing chamber 2 is divided into a driving chamber 22 and a mixing chamber 23, the mixing chamber 23 is used for mixing A liquid dialysate and B liquid dialysate, and the mixing chamber 2 is provided with a regulating chamber 24, the regulating chamber 24 is connected with the liquid inlet 21, and the regulating chamber 24 is respectively connected with the A liquid inlet 211 and the B liquid inlet 212; The impeller 3 is installed in the A liquid inlet 211, and 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 to drive the impeller 3 to rotate. The impeller 3 changes its rotation speed according to the amount of liquid inlet 211. The A liquid dialysate is pressurized by the pump and sent into the A liquid inlet 211. The A liquid dialysate obtains a larger flow velocity and impact force after being pressurized by the pump, thereby satisfying the force for driving the impeller 3 to rotate. A rotating component 4 is provided below the impeller 3, and the rotating component 4 is located in the driving chamber 22. A stirring wheel 5 is provided above the rotating component 4, and the stirring wheel 5 is located in the mixing chamber 23. The stirring wheel 5 is rotatably connected to the inner wall of the mixing chamber 23, and a mounting groove is provided on the inner wall of the mixing chamber 23. The mounting block matched with the mounting groove has a convex structure of the mounting groove, thereby limiting the freedom of the stirring wheel 5 in the vertical direction, so that the stirring wheel 5 can only rotate. An adjusting component 6 is provided on one side of the rotating component 4, and two groups of telescopic plates 7 are arranged in the adjusting component 6. When the A liquid inlet 211 is filled with liquid, the impeller 3 drives the stirring wheel 5 to rotate through the rotating component 4 to achieve uniform mixing of the liquid. The stirring wheel 5 rotates to stir the dialysate in the mixing chamber 2, so that the two dialysates are evenly mixed in the mixing chamber 2, avoiding the wrong proportion of the dialysate flowing out of the liquid outlet due to uneven mixing. The rotating component 4 drives the telescopic plate 7 to slide through the adjusting component 6 to achieve the change of the diameter of the liquid inlet 21. The change in the diameter of the liquid inlet 21 changes the liquid inlet amount of the dialysate, so that the two dialysates can still maintain equal proportion mixing at different flow rates, thereby improving the effect of hemodialysis.

[0025] The driving wheel 41 is fixedly installed with the impeller 3, and the driving wheel 41 is rotatably installed in the adjusting chamber 24. The driving wheel 41 and the driven wheel 42 are arranged vertically, and both the driving wheel 41 and the driven wheel 42 are bevel gears, which are arranged vertically to realize the change of the movement direction, and the horizontal rotation of the driving wheel 41 is converted into the vertical rotation of the driven wheel 42; the driven wheel 42 is fixedly connected with the rotating shaft 43; one end of the rotating shaft 43 is located in the adjusting chamber 24, and a reciprocating crank 44 is installed at the middle end of the rotating shaft 43; the reciprocating crank 44 is eccentrically installed with the rotating shaft 43, and a push rod 45 is rotatably installed on the reciprocating crank 44, and the rotation of the rotating shaft 43 drives the reciprocating crank 44 to swing up and down, and moves to the left and right sides of the rotating shaft 43. The reciprocating crank 44 drives the push rod 45 to slide up and down, and the reciprocating crank 44 and the rotating shaft 43 are eccentrically installed so that the two constitute a crank rocker mechanism, thereby realizing the reciprocating motion of the reciprocating crank 44, and the reciprocating crank 44 drives the push rod 45 to reciprocate up and down; a vibration plate 46 is provided on the push rod 45, and the push rod 45 and the vibration plate 46 are slidably installed; the vibration plate 46 is located in the driving cavity 22, and a vibration spring 47 is arrayed between the vibration plate 46 and the driving cavity 22, and a grid array of vibration bumps 461 is provided on the vibration plate 46, and the vibration bumps 461 are used to knock on 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 driving column 48 is fixedly installed on the vibration plate 46. The reciprocating motion of the push rod 45 cooperates with the vibration spring 47 to realize the reciprocating motion of the vibration plate 46. When the push rod 45 moves vertically upward under the action of the reciprocating crank 44, the push rod 45 pushes the vibration plate 46 to move vertically upward. At the same time, the vibration plate 46 pulls the vibration spring 47; when the push rod 45 moves vertically downward under the action of the reciprocating crank 44, the vibration plate 46 is no longer affected by the force of the push rod 45 and moves downward and resets under the action of the vibration spring 47; the vibration bump 461 is a hemispherical structure, and the vibration bump 461 is located at both ends of the vibration plate 46. The density is smaller than that at the center of the vibration plate 46. The hemispherical structure realizes point contact between the vibration protrusion 461 and the mixing chamber 23, ensuring uniform diffusion of vibration. The density of the vibration protrusion 461 at both ends is smaller than that at the center, so that the vibration at the liquid inlet 21 and the liquid outlet is smaller, the vibration at the middle end of the mixing chamber 2 is larger, and the vibration at the liquid inlet 21 and the liquid outlet is smaller, thereby avoiding the influence of vibration on the entry and output of the dialysate. At the same time, the vibration effect at the middle end is enhanced to promote the mixing effect of the stirring wheel 5 on the dialysate, thereby enhancing the mixing of the dialysate. One end of the driving column 48 is located in the mixing chamber 23 and is rotatably mounted with the stirring wheel 5. The driving column 48 is provided with a driving protrusion 481.The stirring wheel 5 is provided with a driving groove 51 matched with the driving column 48. The driving column 48 squeezes the driving groove 51 on the stirring wheel 5 through the driving protrusion 481, and then drives the stirring wheel 5 to rotate through the driving groove 51. The stirring wheel 5 rotates to stir the dialysate in the mixing chamber 23, so that the dialysate is evenly 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 is connected to the head and tail ends of the rotating section 511. Elastic blocks 513 are provided at the connection between the head and tail ends of the stationary section 512 and the rotating section 511. Elastic blocks 513 are provided at the connection between the stationary section 512 and the rotating section 511. The elastic blocks 513 are used to limit the moving trajectory of the driving protrusion 481. When the driving protrusion 481 moves to the point where the stationary section 512 and the rotating section 511 are connected When the driving column 48 is at the intersection of the rotating section 511 and the stationary section 511, the elastic stopper 513 generates resistance to limit the tendency of the driving protrusion 481 to move along the rotating section 511, so that the driving protrusion 481 slides into the more easily stationary section 512. When the driving column 48 moves vertically upward, under the one-way limiting guiding action of the elastic stopper 513, the driving protrusion 481 squeezes the rotating section 511 to drive the stirring wheel 5 to rotate one circle to mix the dialysate. At this time, the driving protrusion 481 is located at the intersection of the rotating section 511 and the stationary section 512. When the driving column 48 moves vertically downward, under the one-way limiting guiding action of the elastic stopper 513 here, the driving column 48 slides down along the straight groove, and the driving protrusion 481 does not drive the stirring wheel 5 to rotate, so that the stirring wheel 5 rotates in one direction, thereby reducing the generation of eddy currents and avoiding the generation of bubbles due to excessive stirring, which affects the dialysis effect. When the A-liquid dialysate enters from the A-liquid inlet 211, the impeller 3 is impacted by the A-liquid dialysate and then 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 achieve reciprocating swing. The reciprocating crank 44 drives the push rod 45 to reciprocate up and down. The push rod 45 and the vibration spring 47 cooperate with each other to achieve the reciprocating motion of the vibration plate 46. When the vibration plate 46 moves upward, the vibration plate The vibration protrusion 461 on 46 knocks the inner wall of the mixing chamber 23, and transmits the vibration to the mixing chamber 23 to promote the mixing of the dialysate. At the same time, the vibration plate 46 drives the driving column 48 to move upward synchronously. The driving column 48 squeezes the driving groove 51 of the stirring wheel 5 through the driving protrusion 481, thereby driving the stirring wheel 5 to rotate to mix the dialysate. The impeller 3 controls the stirring wheel 5 to achieve different rotation speeds according to the different liquid intake amounts through the rotating component 4, so as to meet the uniform mixing of the dialysate with different contents. At the same time, the knocking of the vibration plate 46 on the mixing chamber 23 is enhanced to promote the mixing of the dialysate.

[0026] The fixed sleeve 61 is located in the adjustment chamber 24 and is fixedly connected to the rotating shaft 43. The fixed sleeve 61 has a centrifugal spring 62 in an annular array. One end of the centrifugal spring 62 is fixedly connected to the fixed sleeve 61, and the other end of the centrifugal spring 62 is fixedly connected to the centrifugal plate 63. A push plate 64 is arranged inside the adjustment chamber 24. The push plate 64 is located on one side of the centrifugal plate 63 distributed in an annular array. The impeller 3 realizes different speed changes according to different liquid inflows, thereby making the rotating shaft 43 realize different speeds, and the rotating shaft 43 drives the fixed shaft The sleeve 61 rotates synchronously, and the fixed sleeve 61 realizes synchronous change of centrifugation according to the change of speed, so that the centrifugal spring 62 is stretched to different degrees, pushing the centrifugal plate 63 to move different distances. The rotation of the rotating shaft 43 drives the fixed sleeve 61 to rotate synchronously, and the fixed sleeve 61 transmits the generated centrifugal force to the centrifugal plate 63, so that the centrifugal plate 63 moves along the outer side of the circumference. The centrifugal plate 63 contacts the push plate 64 and pushes the push plate 64 to slide. The push plate 64 ensures continuous contact with the centrifugal plate 63, realizes the conversion of centrifugal force, and ensures the continuous conversion of centrifugal force. The push plate 64 is fixedly connected to the push rod 65; an inclined groove 651 is provided on the push rod 65, and the push plate 64 and the driving rack 66 are arranged vertically. The push rod 65 slides synchronously with the push plate 64. A limiting protrusion 652 is provided at the bottom end of the push rod 65, and a sliding groove 241 cooperating with the limiting protrusion 652 is provided on the inner wall of the regulating chamber 24. The cooperation between the limiting protrusion 652 and the sliding groove 241 realizes the fixation of the push rod 65, thereby realizing the step-by-step pushing of the push rod 65. Only when the centrifugal force reaches the set size can the push plate 64 push the push rod 65 to slide, thereby realizing the graded division of the liquid inlet amount. When the liquid inlet amount fluctuates slightly, the centrifugal force changes slightly, thereby causing the circular movement of the centrifugal plate 63. The push rod 65 will not slide when the circular motion is contracted, thereby ensuring the stability of the change in the inner diameter of the liquid inlet 21. At the same time, since the centrifugal plate 63 cannot form a complete circle when performing circular motion, there will be a partial window period in the contact between the centrifugal plate 63 and the push plate 64. At this time, the opening and closing of the limit protrusion 652 and the sliding groove 241 ensure the stable movement of the limit plate; the push rod 65 pushes the drive rack 66 to slide through the inclined groove 651, and the push plate 64 and the drive rack 66 are arranged vertically to achieve the change of the movement direction; a reset spring 67 is provided between the drive rack 66 and the inner wall of the adjustment chamber 24, and the reset spring 67 is used to realize the reset of the drive rack 66, and the drive rack 66 is meshed with the telescopic component 68; The telescopic components 68 are provided with two, and the two telescopic components 68 are respectively located in the A liquid inlet 211 and the B liquid inlet 212, and meshed with each other. A sealing ring is provided between the two telescopic components 68 and their corresponding inlets, thereby ensuring the sealing between the A liquid inlet 211 and the B liquid inlet 212, thereby preventing the dialysate from entering the regulating chamber 24. The telescopic component 68 in the A liquid inlet 211 is meshed with the driving rack 66, and the two groups of telescopic plates 7 are respectively slidably installed in the two telescopic components 68. The telescopic plate 7 is provided with a buffer slope 71, and the buffer slope 71 is provided with a drainage groove 72. The buffer slope 71 is used to increase the angle between the dialysate and the telescopic plate 7, thereby reducing the friction between the two, thereby To ensure the flow rate of the dialysate, the drainage groove 72 guides the dialysate, so that the dialysate flows in a spiral rotation, thereby enhancing the kinetic energy of the A liquid dialysate and the B liquid dialysate and promoting uniform mixing of the dialysate; the driving rack 66 is engaged with the telescopic component 68 of the A liquid inlet 211, and the telescopic component 68 of the A liquid inlet 211 drives the telescopic plate 7 to extend, and 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, thereby allowing the A liquid dialysate and the B liquid dialysate to enter in equal proportions. At this time, it is only necessary to control the inflow amount of the A liquid dialysate to control the equal-proportional entry of the A liquid dialysate and the B liquid dialysate, thereby reducing the difficulty of control; The telescopic assembly 68 includes a driving wheel 681, a fixed wheel 682 and a limiting column 683; the driving wheel 681 is meshed with the driving rack 66, the driving wheel 681 has an arc groove 6811 in a circular array, and a fixed wheel 682 is provided on one side of the driving wheel 681; a limiting groove 6821 corresponding to the arc groove 6811 is provided on the fixed wheel 682, and the limiting column 683 is slidably connected in the limiting groove 6821, and the end of each limiting column 683 is respectively inserted into the corresponding limiting groove 6821; the number of the telescopic plates 7 in each group is the same as the number of the limiting columns 683, and each of the telescopic plates 7 is fixedly connected to the surface of the corresponding limiting column 683, and the telescopic plate 7 is located between the driving wheel 681 and the fixed wheel 682; the driving wheel 681 is meshed with the driving rack 66 and then rotates, and the driving wheel 681 rotates to squeeze and push the limiting column 683 through the arc groove 6811, and the limiting column 683 is inserted into the corresponding limiting groove 6821. The position column 683 keeps sliding horizontally under the action of the limit groove 6821, thereby driving the telescopic plate 7 to slide and change the inner diameter of the liquid inlet 21; the diameter of the driving wheel 681 in the A liquid inlet 211 is larger than the diameter of the driving wheel 681 in the diameter of the B liquid inlet 212. When the A liquid dialysate and the B liquid dialysate are proportioned, 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 driving wheels 681, the transmission ratio between the two is limited, so that the sliding distance of the telescopic plate 7 in the B liquid inlet 212 is greater than the sliding distance of the telescopic plate 7 in the A liquid inlet 211, thereby reducing the diameter of the driving wheel 681 in the B liquid inlet 212, thereby realizing the change of the transmission ratio, expanding the sliding distance of the telescopic plate 7 in the B liquid inlet 212, and ensuring equal-ratio entry. A sealing ring is provided between the driving wheel 681 and the fixed wheel 682 and the liquid inlet 21 to ensure the sealing of the liquid inlet 21; The rotation of the rotating shaft 43 drives the fixed sleeve 61 to rotate synchronously. The rotation of the fixed sleeve 61 generates centrifugal force to drive 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 driving rack 66 to slide through the inclined groove 651. The driving rack 66 engages with the driving wheel 681 of the A liquid inlet 211. The driving wheel 681 of the A liquid inlet 211 rotates to drive the driving wheel 681 of the B liquid inlet 212 to rotate. The driving wheel 681 rotates and squeezes and pushes the limit column 683 through the arc groove 6811. The limit column 683 keeps horizontal sliding under the action of the limit groove 6821, thereby driving the telescopic plate 7 to slide.

[0027] When the automatic proportioning device for hemodialysis concentrate of the present invention is in use, when the dialysate of liquid A enters from the liquid A inlet 211, the impeller 3 is impacted by the dialysate of liquid A and then 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, and then drives 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 achieve reciprocating swing. The reciprocating crank 44 drives the push rod 45 to reciprocate up and down. When the push rod 45 moves upward, the push rod 45 pushes the vibration plate 46 to move upward synchronously. The vibration plate 46 pulls the vibration spring 47. At the same time, the vibration plate 46 drives the driving column 48 to rotate synchronously. The driving column 48 drives the stirring wheel 5 to rotate. When the push rod 45 moves downward, the push rod 45 is no longer in contact with the vibration plate 46. The vibration spring 47 pulls the vibration plate 46 to reset. The vibration plate 46 moves downward and drives the driving column 48 to move vertically downward. At the same time, the rotation of the rotating shaft 43 drives the fixed shaft sleeve 61 to rotate synchronously. The rotation of the fixed shaft sleeve 61 generates centrifugal force to drive 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 driving rack 66 to slide through the inclined groove 651. The driving rack 66 squeezes the reset spring 67. At the same time, the driving rack 66 is engaged with the driving wheel 681 of the A liquid inlet 211. The driving wheel 681 of the A liquid inlet 211 rotates to drive the driving wheel 681 of the B liquid inlet 212 to rotate. The driving wheel 681 rotates and squeezes and pushes the limiting column 683 through the arc groove 6811. The limiting column 683 keeps sliding horizontally under the action of the limiting groove 6821, thereby driving the telescopic plate 7 to slide. When the hemodialysis machine 1 stops working, the impeller 3 stops rotating, and then the rotating shaft 43 stops rotating, and the fixed sleeve 61 stops rotating synchronously, the centrifugal force disappears, the centrifugal spring 62 pulls the centrifugal plate 63 to reset, and the driving rack 66 is no longer squeezed by the push plate 64. The driving rack 66 is reset under the action of the reset spring 67, and the driving rack 66 pushes the push rod 65 to reset, and the push rod 65 pushes the push plate 64 to reset.

[0028] The present invention provides an automatic proportioning device for hemodialysis concentrate and its operating process. There are many methods and ways to implement the technical solution. The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention. All components not specified in this embodiment can be implemented by existing technologies.

Claims

1. An automatic proportioning device for hemodialysis concentrate, characterized in that: It comprises a hemodialysis machine (1) and an impeller (3); The hemodialysis machine (1) is provided with a mixing chamber (2), the mixing chamber (2) being provided with a liquid inlet (21) and a liquid outlet, the liquid inlet (21) being divided into a liquid A inlet (211) and a liquid B inlet (212); The mixing chamber (2) is divided into a driving chamber (22) and a mixing chamber (23). The mixing chamber (2) is provided with an adjusting chamber (24), and the adjusting chamber (24) is communicated with the liquid inlet (21); The impeller (3) is installed in the A liquid inlet (211); a rotating assembly (4) is provided below the impeller (3); the rotating assembly (4) is located inside the driving 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 adjusting assembly (6) is provided on one side of the rotating assembly (4); two groups of telescopic plates (7) are provided inside the adjusting assembly (6); when liquid is introduced into the A liquid inlet (211), the impeller (3) drives the stirring wheel (5) to rotate through the rotating assembly (4) to achieve uniform mixing of the liquid; and the rotating assembly (4) drives the telescopic plate (7) to slide through the adjusting assembly (6) to achieve a change in the diameter of the liquid inlet (21).

2. The automatic proportioning device for hemodialysis concentrate according to claim 1, characterized in that: The rotating assembly (4) comprises a driving wheel (41), a driven wheel (42) and a rotating shaft (43); The driving wheel (41) is fixedly mounted on the impeller (3), the driving wheel (41) is rotatably mounted in the adjustment chamber (24), and the driving wheel (41) and the driven wheel (42) are arranged vertically; The driven wheel (42) is fixedly connected to the rotating shaft (43); One end of the rotating shaft (43) is located in the adjustment cavity (24), and a reciprocating crank (44) is installed at the middle end of the rotating shaft (43); The reciprocating crank (44) is eccentrically mounted on the rotating shaft (43), and a push rod (45) is rotatably mounted on the reciprocating crank (44); A vibration plate (46) is provided on the push rod (45), and the push rod (45) and the vibration plate (46) are slidably mounted; The vibration plate (46) is located in the driving cavity (22), a vibration spring (47) is arranged in an array between the vibration plate (46) and the driving cavity (22), a vibration bump (461) is arranged in a grid array on the vibration plate (46), and a driving column (48) is fixedly mounted on the vibration plate (46); One end of the driving column (48) is located in the mixing chamber (23) and is rotatably mounted on the stirring wheel (5); a driving protrusion (481) is provided on the driving column (48); The stirring wheel (5) is provided with a driving groove (51) that cooperates with the driving column (48).

3. The automatic proportioning device for hemodialysis concentrate according to claim 2, characterized in that: The vibration convex block (461) is a hemispherical structure, and the density of the vibration convex block (461) located at the two ends of the vibration plate (46) is less than the density at the center of the vibration plate (46).

4. The automatic proportioning device for hemodialysis concentrate according to claim 2, characterized in that: 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) is connected to the head end and the tail end of the rotating section (511); elastic stoppers (513) are provided at the connection between the head end and the tail end of the stationary section (512) and the rotating section (511).

5. The automatic proportioning device for hemodialysis concentrate according to claim 2, characterized in that: The adjustment assembly (6) comprises a fixed shaft sleeve (61), a centrifugal plate (63), a push rod (65), a driving rack (66) and a telescopic assembly (68); The fixed shaft sleeve (61) is located in the adjustment cavity (24) and is fixedly connected to the rotating shaft (43); a centrifugal spring (62) is provided in an annular array on the fixed shaft sleeve (61); One end of the centrifugal spring (62) is fixedly connected to the fixed shaft sleeve (61), and the other end of the centrifugal spring (62) is fixedly connected to the centrifugal plate (63); A push plate (64) is disposed inside the regulating chamber (24), and the push plate (64) is located on one side of the centrifugal plates (63) distributed in a circular array; The push plate (64) is fixedly connected to the push rod (65); The push rod (65) is provided with an inclined groove (651), and the push plate (64) and the driving rack (66) are both arranged vertically; A return spring (67) is provided between the driving rack (66) and the inner wall of the regulating chamber (24), and the driving rack (66) is meshed with the telescopic assembly (68); Two telescopic assemblies (68) are provided. The two telescopic assemblies (68) are respectively located in the A liquid inlet (211) and the B liquid inlet (212) and mesh with each other. The telescopic assembly (68) in the A liquid inlet (211) meshes with the driving rack (66). The two sets of telescopic plates (7) are respectively slidably mounted in the two telescopic assemblies (68).

6. The automatic proportioning device for hemodialysis concentrate according to claim 5, characterized in that: A limiting protrusion (652) is provided at the bottom end of the push rod (65), and a sliding groove (241) cooperating with the limiting protrusion (652) is provided on the inner wall of the adjustment cavity (24).

7. The automatic proportioning device for hemodialysis concentrate according to claim 5, characterized in that: The telescopic assembly (68) comprises a driving wheel (681); The driving wheel (681) is meshed with the driving rack (66); the driving wheel (681) has an arc-shaped groove (6811) in an annular array; and a fixed wheel (682) is provided on one side of the driving wheel (681); The fixed wheel (682) is provided with a limiting groove (6821) corresponding to the arc groove (6811), the limiting groove (6821) is slidably connected with a limiting column (683), and the end of each limiting column (683) is respectively inserted into the corresponding limiting groove (6821); The number of the telescopic plates (7) in each group is the same as the number of the limiting posts (683), and each of the telescopic plates (7) is fixedly connected to the surface of a corresponding limiting post (683), and the telescopic plates (7) are located between the driving wheel (681) and the fixed wheel (682).

8. The automatic proportioning device for hemodialysis concentrate according to claim 7, characterized in that: The diameter of the driving wheel (681) in the A liquid inlet (211) is greater than the diameter of the driving wheel (681) in the B liquid inlet (212).

9. The automatic proportioning device for hemodialysis concentrate according to claim 8, 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).

10. An automatic proportioning operation process for hemodialysis concentrate, applicable to an automatic proportioning device for hemodialysis concentrate according to any one of claims 1 to 9, characterized in that: The operation process includes the following steps: S1. Prepare the A liquid dry powder and the B liquid dry powder into corresponding A liquid dialysate and B liquid dialysate respectively according to the proportion, wherein the pH value of the A liquid dialysate and the B liquid dialysate bicarbonate dialysate is 7.0-7.8, and place the prepared dialysate on the hemodialysis machine (1); S2, the hemodialysis machine (1) is started to convey the A liquid dialysate and the B liquid dialysate into the mixing chamber (2), the A liquid dialysate first enters the mixing chamber (2) from the A liquid inlet (211), and at the same time, the B liquid inlet (212) conveys a specified proportion of the B liquid dialysate into the mixing chamber (2) according to the amount of liquid inlet (211) of the A liquid inlet; S3, when the A liquid dialysate 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 dialysate in equal proportion according to the amount of liquid entering the A liquid inlet (211). The rotating component (4) then evenly mixes the A liquid dialysate and the B liquid dialysate.

Images