CN115501404A - Hemodialysis instrument - Google Patents
Hemodialysis instrument Download PDFInfo
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- CN115501404A CN115501404A CN202210999456.8A CN202210999456A CN115501404A CN 115501404 A CN115501404 A CN 115501404A CN 202210999456 A CN202210999456 A CN 202210999456A CN 115501404 A CN115501404 A CN 115501404A
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- Prior art keywords
- rotating shaft
- ring
- ratchet
- central rotating
- central
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
- A61M1/14—Dialysis systems; Artificial kidneys; Blood oxygenators ; Reciprocating systems for treatment of body fluids, e.g. single needle systems for hemofiltration or pheresis
- A61M1/16—Dialysis systems; Artificial kidneys; Blood oxygenators ; Reciprocating systems for treatment of body fluids, e.g. single needle systems for hemofiltration or pheresis with membranes
- A61M1/1621—Constructional aspects thereof
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M2205/00—General characteristics of the apparatus
- A61M2205/82—Internal energy supply devices
Abstract
The invention relates to the technical field of medical treatment, in particular to a hemodialysis instrument, which comprises a pump shell, a hose, a central rotating shaft, a roller component, an energy storage component, a reversing component and a driving component, wherein a liquid inlet and a liquid outlet are formed in one side of the pump shell, the energy storage component comprises a transmission rotating shaft and a spring plate, a coiled spring is arranged in the spring plate, the reversing component comprises a first ratchet mechanism, a second ratchet mechanism and a planetary gear mechanism, and the driving component comprises a motor and a normally closed clutch switch.
Description
Technical Field
The invention relates to the technical field of medical treatment, in particular to a hemodialysis instrument.
Background
Hemodialysis is one of the kidney replacement treatment modes of patients with acute and chronic renal failure. The method comprises the steps of draining blood in vivo to the outside of the body, passing through a dialyzer consisting of a plurality of hollow fibers, enabling the blood and electrolyte solution with similar body concentration to be inside and outside one hollow fiber, and performing substance exchange by dispersion, ultrafiltration, adsorption and convection principles to remove metabolic waste in the body and maintain the balance of electrolyte and acid-base; meanwhile, excessive water in the body is removed, the whole process of purified blood reinfusion is called hemodialysis, wherein the hemodialysis instrument is needed to be used when the hemodialysis is carried out, the existing hemodialysis instrument comprises a circulating peristaltic pump, the circulating peristaltic pump needs to be driven by a motor to work, but in the period from sudden power failure of a hospital to starting of a standby power supply, the traditional circulating peristaltic pump stops working, the hemodialysis process is affected, medical accidents can occur, the life safety of a patient is threatened, and therefore the hemodialysis instrument capable of continuously working for a period of time after power failure is necessary to be provided aiming at the problems.
Disclosure of Invention
In view of the above, there is a need to provide a hemodialysis machine that addresses the problems of the prior art.
In order to solve the problems of the prior art, the invention adopts the technical scheme that: a hemodialysis machine, comprising:
the pump comprises a pump shell, a semi-closed shell and a pump body, wherein the top of the pump shell is of an open structure, a columnar accommodating groove is formed in the center of the semi-closed shell, and a liquid inlet and a liquid outlet which are communicated with the columnar accommodating groove are formed in the outer wall of one side of the pump shell;
the hose is embedded on the circumferential wall of the columnar holding tank in a U shape, and two ends of the hose are respectively communicated with the liquid inlet and the liquid outlet;
the central rotating shaft is vertically and rotatably arranged in the columnar accommodating groove, and the lower end of the central rotating shaft vertically and downwards penetrates through the bottom of the pump shell;
the roller assembly is arranged on the central rotating shaft and is used for rotating and extruding the hose so that the liquid in the hose flows from the liquid inlet to the liquid outlet along the hose;
the energy storage assembly comprises a transmission rotating shaft and a spring plate, the transmission rotating shaft is vertically and rotatably arranged beside the central rotating shaft and is in transmission connection with the central rotating shaft, the rotation direction of the transmission rotating shaft is opposite to that of the central rotating shaft, the spring plate is arranged right above the transmission rotating shaft, a rolled spring is arranged in the spring plate, and the upper end of the transmission rotating shaft is connected with the rolled spring and is used for driving the rolled spring to roll;
the reversing assembly comprises a first ratchet mechanism, a second ratchet mechanism and a planetary gear mechanism, the central rotating shaft drives the roller assembly to rotate through the first ratchet mechanism after rotating, the second ratchet mechanism is used for transmitting the torque of the transmission rotating shaft to the planetary gear mechanism when the transmission rotating shaft rotates reversely, and the planetary gear mechanism is used for carrying out steering conversion so that the roller assembly rotates forwards again;
drive assembly, including motor and normally closed separation and reunion switch, the motor is the vertical fixed bottom of locating the pump case, and the output shaft of motor is vertical up, and normally closed separation and reunion switch locates between the output shaft and the central pivot of motor, and normally closed separation and reunion switch makes the output shaft separation of central pivot and motor in the central pivot with the moment of torsion transmission of motor output shaft when the motor circular telegram.
Further, the bottom of the columnar holding tank is fixedly provided with a first bearing which is vertical in the axial direction, the central rotating shaft is fixedly connected with the inner ring of the first bearing in a coaxial mode and then vertically penetrates through the pump shell downwards, the middle of the central rotating shaft is fixedly provided with a driving gear in a coaxial mode, and the transmission rotating shaft is fixedly provided with a transmission gear meshed with the driving gear in a coaxial mode.
Further, the first ratchet mechanism includes:
the second bearing is coaxially sleeved at the upper end of the central rotating shaft, and the inner ring of the second bearing is fixedly connected with the central rotating shaft;
the center of the first ratchet wheel disc is provided with a first through hole, the first ratchet wheel disc is coaxially and fixedly sleeved on the outer ring of the second bearing, and a circle of first ratchets are formed at the top of the first ratchet wheel disc;
the first pawls are distributed on one side of the first ratchet wheel disc where the first ratchets are formed in a circular array mode, each first pawl is meshed with the first ratchets, and the first pawls are fixedly connected with the central rotating shaft through a first fixing frame;
wherein, the roller assembly is connected with the first ratchet wheel disc.
Further, the roller assembly includes:
the connecting cylindrical sleeve is vertically and coaxially sleeved on the central rotating shaft, and the top of the connecting cylindrical sleeve is fixedly connected with the bottom of the first ratchet wheel disc;
the two transverse supporting rods are symmetrically and fixedly arranged on the outer wall of the connecting cylindrical sleeve, and the length direction of each transverse supporting rod is consistent with the radial direction of the central rotating shaft;
two pulleys, every pulley all link to each other through pulley yoke and the horizontal branch that corresponds, and the axial of every pulley all is vertical and every pulley homoenergetic is laminated in the perisporium rotation of column holding tank.
Further, second ratchet is located between first ratchet and the drive gear, and second ratchet includes:
the third bearing is coaxially sleeved on the central rotating shaft, and the inner ring of the third bearing is fixedly connected with the central rotating shaft;
a second ratchet wheel disc, wherein a second through hole is formed in the center of the second ratchet wheel disc and coaxially and fixedly sleeved on an outer ring of the third bearing, and a second ratchet wheel with a ring of teeth opposite to the first ratchet wheel in direction is formed at the top of the second ratchet wheel disc;
the second pawls are distributed on one side of the second ratchet formed by the second ratchet disc in a circular array mode, each second pawl is meshed with the second ratchet, and the second pawls are fixedly connected with the central rotating shaft through the second fixing frame.
Further, the planetary gear mechanism includes:
the central outer gear ring is coaxially and fixedly sleeved on the outer wall of the second ratchet wheel disc;
the annular gear carrier is sleeved on the periphery of the central outer gear ring, and the bottom of the annular gear carrier is fixedly connected with the bottom of the columnar accommodating groove;
the planetary gears are connected in the annular gear carrier in a circular array in a shaft mode, and each planetary gear is meshed with the central outer gear ring;
the inner gear ring is arranged on the periphery of the plurality of planetary gears and is meshed with each planetary gear, a plane bearing is arranged below the inner gear ring, the lower ring of the plane bearing is abutted against the annular gear carrier, and the upper ring is abutted against the bottom of the inner gear ring;
the two connecting vertical plates are symmetrically arranged at the top of the inner gear ring, and two ends of each connecting vertical plate are fixedly connected with the top of the inner gear ring and the bottom of the corresponding pulley frame respectively.
Furthermore, the spring plate is a semi-closed cylindrical shell with an open structure at the bottom, the coiled spring is movably arranged in the spring plate, the end part of the coiled spring, which is positioned at the outer edge, is fixedly connected with the spring plate, a circular cover plate is fixedly connected to the open structure of the spring plate, and a central hole which is opposite to the center of the coiled spring and is used for the upper end of the transmission rotating shaft to pass through is formed in the circular cover plate.
Further, the shaping has the rectangle that is linked together with the pump case to hold the storehouse on the lateral wall of one side of pump case, the rectangle holds the storehouse and keeps away from one side of pump case for open structure, the rectangle holds the storehouse internal fixation and is equipped with two horizontal support boards that are parallel to each other and interval distribution from top to bottom, the top that lies in the horizontal support board of top is fixed and is equipped with one and be vertical sleeve, telescopic inner wall inlays and is equipped with the round rubber ring, clockwork spring dish opening is inserted downwards and is located the rubber ring, and the outer wall of clockwork spring dish is laminated with the inner wall of rubber ring mutually, the transmission pivot is located between two horizontal support boards and the both ends of transmission pivot are connected with two horizontal support boards respectively with the axle, the upper end of transmission pivot upwards passes horizontal support board and the centre bore that lie in the top in proper order and the tip that the center was located the center department links firmly mutually with the coil spring, drive gear is located between two horizontal support boards.
Further, the motor passes through the rectangle fixing base and links to each other with the bottom of pump case, and the rectangle fixing base is the shell form and wherein is the both sides of symmetry and is open structure, and the hole of dodging that supplies central pivot and motor output to pass is seted up respectively to the top and the bottom of rectangle fixing base, and normally closed clutch switch includes:
the cylindrical accommodating shell is coaxially connected with an output shaft of the motor, the top of the cylindrical accommodating shell is of an open structure, a plurality of vertical bosses in a circular array are formed on the inner wall of the cylindrical accommodating shell, and the top of each vertical boss is in a smooth round head shape;
the movable pressing plate is circular and is coaxially and movably arranged in the cylindrical containing shell, a plurality of grooves in a circular array are formed in the outer edge of the bottom of the movable pressing plate, the upper end of each vertical boss can be clamped in the corresponding groove, a vertical cylindrical sleeve is formed in the center of the top of the movable pressing plate, the cylindrical sleeve is upwards movably sleeved at the bottom end of the central rotating shaft, a plurality of vertical limiting strips in a circular array are formed on the outer wall of the bottom end of the central rotating shaft, and a plurality of vertical limiting grooves matched with the vertical limiting strips are formed in the cylindrical sleeve;
the spring is vertically arranged in the columnar accommodating shell, and two ends of the spring respectively abut against the bottom of the movable pressure plate and the bottom in the columnar accommodating shell;
the electromagnet is annular and is embedded at the bottom in the cylindrical accommodating shell;
and the annular iron ring is embedded at the bottom of the movable pressing plate and is opposite to the electromagnet.
Furthermore, the top of the pump shell is hinged with a transparent cover plate for sealing the top opening of the pump shell, and an installation cover plate for sealing the opening of the rectangular accommodating bin is fixedly arranged on the opening of the rectangular accommodating bin.
Compared with the prior art, the invention has the beneficial effects that: compare traditional hemodialysis appearance, this device is at peristaltic pump normal operating, also be the pulley of this device when carrying out the extrusion infusion to the hose, the revolving force transmission that produces the pulley rotation carries out the energy storage on the coil-shaped clockwork spring, thereby when the outage, the revolving force through the switching-over subassembly with coil-shaped clockwork spring release commutates and transmits on the pulley, make the pulley also can continue to operate one end time, and in this section of time, medical personnel can go to start stand-by power supply and lead to stand-by power supply with the rotatory motor of driving pulley, carry out normal power supply, and then in this section of time of leading to stand-by power supply at the outage, whole peristaltic pump still normally goes on, prevent that hemodialysis process from causing the influence to the patient because of outage abrupt interruption.
Drawings
FIG. 1 is a schematic perspective view of the embodiment;
FIG. 2 is a first cross-sectional perspective view of the pump housing of an embodiment;
FIG. 3 is an enlarged partial view of A1 shown in FIG. 2;
FIG. 4 is an enlarged partial view of A2 indicated in FIG. 2;
FIG. 5 is an enlarged partial view of A3 indicated in FIG. 2;
FIG. 6 is an enlarged partial schematic view of A4 indicated in FIG. 2;
FIG. 7 is a second cross-sectional view of the pump housing of the embodiment;
FIG. 8 is an exploded perspective view of the truck assembly and the reversing assembly of the embodiment;
FIG. 9 is an exploded perspective view of an energy storage assembly of an embodiment;
fig. 10 is an exploded perspective view of the drive assembly of the embodiment.
The reference numbers in the figures are: 1. a pump housing; 2. a columnar accommodating groove; 3. a liquid inlet; 4. a liquid outlet; 5. a hose; 6. a central rotating shaft; 7. a transmission rotating shaft; 8. a spring plate; 9. a coiled spring; 10. a motor; 11. a first bearing; 12. a drive gear; 13. a transmission gear; 14. a second bearing; 15. a first ratchet wheel disc; 16. punching a hole I; 17. a first ratchet; 18. a first pawl; 19. a first fixing frame; 20. connecting the cylindrical sleeve; 21. a transverse strut; 22. a pulley; 23. a pulley yoke; 24. a third bearing; 25. a second ratchet wheel disc; 26. punching a hole II; 27. a second ratchet; 28. a second pawl; 29. a second fixing frame; 30. a central outer gear ring; 31. a ring gear carrier; 32. a planetary gear; 33. an inner gear ring; 34. a flat bearing; 35. connecting a vertical plate; 36. a circular cover plate; 37. a central bore; 38. a rectangular holding bin; 39. a horizontal support plate; 40. a sleeve; 41. a rubber ring; 42. a rectangular fixed seat; 43. avoiding holes; 44. a cylindrical containment shell; 45. a vertical boss; 46. a movable pressing plate; 47. a groove; 48. a cylindrical sleeve; 49. a vertical limiting strip; 50. a vertical limiting groove; 51. a spring; 52. an electromagnet; 53. an annular iron ring; 54. a transparent cover plate; 55. and (7) installing a cover plate.
Detailed Description
For further understanding of the features and technical means of the present invention, as well as the specific objects and functions attained by the present invention, the present invention will be described in further detail with reference to the accompanying drawings and detailed description.
Referring to fig. 1 to 10, a hemodialysis machine includes:
the pump comprises a pump shell 1, a semi-closed shell and a liquid outlet, wherein the top of the pump shell is of an open structure, the center of the pump shell is provided with a columnar accommodating groove 2, and the outer wall of one side of the pump shell 1 is provided with a liquid inlet 3 and a liquid outlet 4 which are communicated with the columnar accommodating groove 2;
the hose 5 is embedded on the circumferential wall of the columnar accommodating groove 2 in a U shape, and two ends of the hose 5 are respectively communicated with the liquid inlet 3 and the liquid outlet 4;
the central rotating shaft 6 is vertically and rotatably arranged in the columnar accommodating groove 2, and the lower end of the central rotating shaft 6 vertically and downwards penetrates through the bottom of the pump shell 1;
the roller assembly is arranged on the central rotating shaft 6 and is used for rotating and extruding the hose 5 so that liquid in the hose 5 flows from the liquid inlet 3 to the liquid outlet 4 along the hose 5;
the energy storage assembly comprises a transmission rotating shaft 7 and a spring plate 8, the transmission rotating shaft 7 is vertically and rotatably arranged beside the central rotating shaft 6 and is in transmission connection with the central rotating shaft 6, the rotation direction of the transmission rotating shaft 7 is opposite to that of the central rotating shaft 6, the spring plate 8 is arranged right above the transmission rotating shaft 7, a rolled spring 9 is arranged in the spring plate 8, and the upper end of the transmission rotating shaft 7 is connected with the rolled spring 9 and is used for driving the rolled spring 9 to roll;
the reversing assembly comprises a first ratchet mechanism, a second ratchet mechanism and a planetary gear mechanism, the central rotating shaft 6 drives the roller assembly to rotate through the first ratchet mechanism after rotating, the second ratchet mechanism is used for transmitting the torque of the transmission rotating shaft 7 to the planetary gear mechanism when the transmission rotating shaft 7 rotates reversely, and steering conversion is carried out through the planetary gear mechanism, so that the roller assembly rotates forwards again;
drive assembly, including motor 10 and normally closed clutch switch, motor 10 is the vertical fixed bottom of locating pump case 1, and the output shaft of motor 10 is vertical up, and normally closed clutch switch locates between the output shaft of motor 10 and central pivot 6, and normally closed clutch switch transmits the moment of torsion of motor 10 output shaft in central pivot 6 when motor 10 circular telegram, makes central pivot 6 and motor 10's output shaft separation when motor 10 cuts off the power supply.
Referring to fig. 2 and 7, a first bearing 11 which is vertical in the axial direction is fixedly arranged at the bottom of the columnar accommodating groove 2, a central rotating shaft 6 is coaxially and fixedly connected with an inner ring of the first bearing 11 and then vertically and downwards penetrates through the pump shell 1, a driving gear 12 is coaxially and fixedly arranged in the middle of the central rotating shaft 6, and a transmission gear 13 which is meshed with the driving gear 12 is coaxially and fixedly arranged on the driving rotating shaft 7.
When the central rotating shaft 6 rotates, the driving gear 12 drives the transmission gear 13 meshed with the central rotating shaft to rotate reversely, so that the transmission rotating shaft 7 is driven to rotate reversely, and the coiled spring 9 in the spring plate 8 is wound through the reverse rotation of the transmission rotating shaft 7, so that the coiled spring 9 stores energy.
Referring to fig. 2, 3 and 8, the first ratchet mechanism includes:
the second bearing 14 is coaxially sleeved at the upper end of the central rotating shaft 6, and the inner ring of the second bearing 14 is fixedly connected with the central rotating shaft 6;
the center of the first ratchet wheel disc 15 is provided with a first through hole 16, the first through hole is coaxially and fixedly sleeved on the outer ring of the second bearing 14, and a ring of first ratchets 17 are formed at the top of the first ratchet wheel disc 15;
the first pawls 18 are distributed on one side of the first ratchet wheel disc 15 where the first ratchets 17 are formed in a circular array mode, each first pawl 18 is meshed with the first ratchets 17, and the first pawls 18 are fixedly connected with the central rotating shaft 6 through first fixing frames 19;
wherein, the roller assembly is connected with the first ratchet wheel disk 15.
When the central rotating shaft 6 rotates, a plurality of first pawls 18 fixedly connected with the central rotating shaft 6 through a first fixing frame 19 are meshed with the first ratchet disc 15 and drive the first ratchet disc 15 to rotate, so that the first ratchet disc 15 can rotate to drive the roller assembly to extrude and infuse the hose 5.
Referring to fig. 2 and 8, the scroll wheel assembly includes:
the connecting cylindrical sleeve 20 is vertically and coaxially sleeved on the central rotating shaft 6, and the top of the connecting cylindrical sleeve 20 is fixedly connected with the bottom of the first ratchet wheel disc 15;
the two transverse supporting rods 21 are symmetrically and fixedly arranged on the outer wall of the connecting cylindrical sleeve 20, and the length direction of each transverse supporting rod 21 is consistent with the radial direction of the central rotating shaft 6;
two pulleys 22, every pulley 22 all links to each other with the horizontal branch 21 that corresponds through pulley yoke 23, and every pulley 22's axial all is vertical and every pulley 22 all can laminate in the perisporium rotation of column holding tank 2.
When the transverse supporting rod 21 is processed, the transverse supporting rod 21 can be processed into an elastic telescopic rod, and the pulley frame 23 is fixed on the elastic end, so that the pulley 22 has an inward-retracting elastic force after contacting the hose 5, and the pulley 22 is prevented from directly and rigidly contacting the hose 5 to cause the hose 5 to be extruded and burst after the hose 5 is filled with liquid.
Referring to fig. 2, 4 and 8, a second ratchet mechanism is provided between the first ratchet mechanism and the drive gear 12, the second ratchet mechanism including:
the third bearing 24 is coaxially sleeved on the central rotating shaft 6, and the inner ring of the third bearing 24 is fixedly connected with the central rotating shaft 6;
a second ratchet wheel disc 25, the center of which is provided with a second through hole 26, is coaxially and fixedly sleeved on the outer ring of the third bearing 24, and the top of the second ratchet wheel disc 25 is formed with a second ratchet 27 with the tooth direction opposite to that of the first ratchet 17;
the second pawls 28 are distributed on one side of the second ratchet wheel disc 25 where the second ratchets 27 are formed in a circular array mode, each second pawl 28 is meshed with the second ratchets 27, and the second pawls are fixedly connected with the central rotating shaft 6 through second fixing frames 29.
Because the tooth direction of the second ratchet 27 is opposite to the tooth direction of the first ratchet 17, when the central rotating shaft 6 rotates, the first pawls 18 drive the first ratchet disc 15 to rotate, the second pawls 28 rotate and slide on the second ratchet 27 and do not drive the second ratchet disc 25 to rotate, in the process, the pulley 22 rotates to extrude the hose 5, and the transmission rotating shaft 7 is driven by the central rotating shaft 6 to rotate reversely to wind and store energy for the coiled clockwork spring 9.
Referring to fig. 2, 5, and 8, the planetary gear mechanism includes:
the central outer gear ring 30 is coaxially and fixedly sleeved on the outer wall of the second ratchet wheel disc 25;
the ring gear carrier 31 is sleeved on the periphery of the central outer gear ring 30, and the bottom of the ring gear carrier 31 is fixedly connected with the bottom of the cylindrical accommodating groove 2;
a plurality of planet gears 32, journalled in a circular array within the ring gear carrier 31, each planet gear 32 meshing with the central outer ring gear 30;
the inner gear ring 33 is arranged on the periphery of the plurality of planetary gears 32, the inner gear ring 33 is meshed with each planetary gear 32, a plane bearing 34 is arranged below the inner gear ring 33, the lower ring of the plane bearing 34 is abutted against the ring gear carrier 31, and the upper ring is abutted against the bottom of the inner gear ring 33;
the two connecting vertical plates 35 are symmetrically arranged at the top of the inner gear ring 33, and two ends of each connecting vertical plate 35 are fixedly connected with the top of the inner gear ring 33 and the bottom of the corresponding pulley frame 23.
When the central rotating shaft 6 is driven to rotate by the motor 10, the first pawls 18 fixedly connected with the central rotating shaft 6 drive the first ratchet discs 15 to drive each pulley 22 to rotate and extrude the hose 5, so that the rotating direction of the central rotating shaft 6 determines the flow direction of fluid in the hose 5, when the default central rotating shaft 6 rotates clockwise, the fluid in the hose 5 flows to the fluid outlet 4 from the fluid inlet 3, after the central rotating shaft 6 rotates clockwise, the first ratchet discs 15 rotate clockwise, at the moment, the second ratchet discs 25 do not rotate, the driving gear 12 drives the transmission gear 13 to rotate counterclockwise, meanwhile, the transmission rotating shaft 7 rotates counterclockwise to drive the rolled spiral spring 9 to roll and store energy, once the motor 10 is powered off, the rolled spiral spring 9 releases elasticity to drive the transmission rotating shaft 7 to rotate clockwise, the transmission gear 13 rotates clockwise, and the driving gear 12 rotates counterclockwise, then the central rotating shaft 6 rotates counterclockwise, at this time, the second pawl 28 engages with the second ratchet 27 and drives the second ratchet disc 25 to rotate counterclockwise, then the central outer gear ring 30 fixed on the outer wall of the second ratchet disc 25 rotates counterclockwise to drive each planetary gear 32 to rotate clockwise, so that the inner gear ring 33 engaging with each planetary gear 32 rotates clockwise, then through the connection effect of the two connecting vertical plates 35, the two pulley carriers 23 rotate clockwise to continue to drive the two pulleys 22 to squeeze and feed the flexible tube 5, wherein, when the central rotating shaft 6 rotates counterclockwise, the plurality of first pawls 18 rotate counterclockwise, the first ratchet disc 15 is driven by the connecting sleeve 20 to rotate clockwise, so that each first pawl 18 slides on the first pawl 17 without interfering with the clockwise rotation of the first ratchet disc 15, hereby it is achieved that the pulley 22 will continue to operate for the transport of liquid in the hose 5 for a while after the motor 10 has been de-energized.
Referring to fig. 9, the spring plate 8 is a semi-closed cylindrical case with an open bottom, the coiled spring 9 is movably disposed in the spring plate 8, the end of the coiled spring 9 located at the outer edge is fixedly connected to the spring plate 8, a circular cover plate 36 is fixedly connected to the open bottom of the spring plate 8, and a central hole 37 is formed in the circular cover plate 36, which is aligned with the center of the coiled spring 9 and through which the upper end of the transmission shaft 7 passes.
When the spring plate 8 is pulled by the end of the spiral spring 9 at the outer periphery, that is, the spiral spring 9 is compressed to the extreme, the rotationally arranged spring plate 8 rotates, thereby preventing the motor 10 from moving after the spiral spring 9 is compressed to the extreme by rotation, and further causing the spiral spring 9 to be torn by the rotation of the transmission rotary shaft 7.
Referring to fig. 2 and 9, a rectangular accommodating chamber 38 communicated with the pump case 1 is formed on a side wall of one side of the pump case 1, one side of the rectangular accommodating chamber 38 away from the pump case 1 is of an open structure, two parallel horizontal support plates 39 distributed at intervals up and down are fixedly arranged in the rectangular accommodating chamber 38, a vertical sleeve 40 is fixedly arranged at the top of the horizontal support plate 39 positioned above, a ring of rubber ring 41 is embedded in the inner wall of the sleeve 40, the spring plate 8 is inserted into the rubber ring 41 with an opening facing downward, the outer wall of the spring plate 8 is attached to the inner wall of the rubber ring 41, the transmission rotating shaft 7 is arranged between the two horizontal support plates 39, two ends of the transmission rotating shaft 7 are respectively coupled with the two horizontal support plates 39, the upper end of the transmission rotating shaft 7 sequentially penetrates through the horizontal support plate 39 positioned above and the central hole 37 to be fixedly connected with the end of the coiled spring 9 at the center, and the transmission gear 13 is positioned between the two horizontal support plates 39.
When the coiled clockwork spring 9 is driven by the transmission rotating shaft 7 to wind, the clockwork spring 8 may be driven by the coiled clockwork spring 9 in the winding process to rotate, so that the compression of the coiled clockwork spring 9 is not extremely caused to cause insufficient energy storage, and the subsequent reverse rotation of the driving rotating shaft 7 is influenced, at this time, if the clockwork spring 8 tends to rotate in the winding process of the coiled clockwork spring 9, the rotation friction of the clockwork spring 8 is increased through the action of the rubber ring 41, the rotation force generated by the clockwork spring 8 is not enough to overcome the rotation friction with the rubber ring 41, so that the clockwork spring 8 is in a stable state in the winding process of the coiled clockwork spring 9, and the clockwork spring 8 does not start to rotate until the coiled clockwork spring 9 is wound to be extremely caused.
Referring to fig. 1 and 10 to show, motor 10 links to each other through the bottom of rectangle fixing base 42 with pump case 1, and rectangle fixing base 42 is the shell form and wherein is the both sides of symmetry and is open structure, and the hole 43 of dodging that supplies central pivot 6 and motor 10 output to pass is seted up respectively to the top and the bottom of rectangle fixing base 42, and normally closed clutch switch includes:
the cylindrical accommodating shell 44 is coaxially connected with an output shaft of the motor 10, the top of the cylindrical accommodating shell 44 is of an open structure, a plurality of vertical bosses 45 in a circular array are formed on the inner wall of the cylindrical accommodating shell 44, and the top of each vertical boss 45 is in a smooth round head shape;
the movable pressing plate 46 is circular and coaxially and movably arranged in the columnar accommodating shell 44, a plurality of grooves 47 in a circular array are formed in the outer edge of the bottom of the movable pressing plate 46, the upper end of each vertical boss 45 can be clamped in the corresponding groove 47, a vertical cylindrical sleeve 48 is formed in the center of the top of the movable pressing plate 46, the cylindrical sleeve 48 is upwards movably sleeved at the bottom end of the central rotating shaft 6, a plurality of vertical limiting strips 49 in a circular array are formed on the outer wall of the bottom end of the central rotating shaft 6, and a plurality of vertical limiting grooves 50 matched with the vertical limiting strips 49 are formed in the cylindrical sleeve 48;
the spring 51 is vertically arranged in the cylindrical accommodating shell 44, and two ends of the spring 51 are respectively abutted against the bottom of the movable pressing plate 46 and the bottom in the cylindrical accommodating shell 44;
an electromagnet 52 having a ring shape and embedded in the bottom of the cylindrical accommodation case 44;
and the annular iron ring 53 is embedded at the bottom of the movable pressure plate 46 and is opposite to the electromagnet 52.
When the power is off, the electromagnet 52 is not powered on, the movable pressing plate 46 is supported upwards through the elasticity of the spring 51, so that the cylindrical sleeve 48 slides upwards on the central rotating shaft 6 until the bottom end of the central rotating shaft 6 is abutted against the top of the movable pressing plate 46, at the moment, the plurality of grooves 47 on the movable pressing plate 46 are separated from the plurality of vertical bosses 45 in the cylindrical accommodating shell 44, therefore, the rotation of the central rotating shaft 6 does not affect the output shaft of the motor 10, once the power is on, the motor 10 is started, the electromagnet 52 is powered on, at the moment, the rotating shaft of the motor 10 can rotate immediately to drive the cylindrical accommodating shell 44 to rotate, the electromagnet 52 attracts the annular iron ring 53, so that the movable pressing plate 46 overcomes the elasticity of the spring 51 to move downwards, until a plurality of vertical bosses 45 in rotation are clamped in grooves 47 on a movable pressing plate 46, at the moment, the movable pressing plate 46 can rotate along with a cylindrical containing shell 44, then a cylindrical sleeve 48 arranged at the top of the movable pressing plate 46 can drive the central rotating shaft 6 to rotate, and as long as an electromagnet 52 is electrified all the time, an output shaft of the motor 10 and the central rotating shaft 6 are always in a connected state, because the cylindrical sleeve 48 is connected with the movable pressing plate 46, when the movable pressing plate 46 is attracted to move downwards by the electromagnet 52, the cylindrical sleeve 48 also moves downwards, and in order to prevent the cylindrical sleeve 48 from moving downwards to be separated from the central rotating shaft 6, the axial length of the cylindrical sleeve 48 arranged at the bottom end of the central rotating shaft 6 needs to be larger than the maximum downward travel of the movable pressing plate 46.
Referring to fig. 1, the top of the pump casing 1 is hinged with a transparent cover 54 for closing the top opening, and the opening of the rectangular housing chamber 38 is fixedly provided with a mounting cover 55 for closing the opening.
The working principle is as follows:
when the power is normally supplied, the output shaft of the motor 10 drives the cylindrical containing shell 44 to rotate, the annular iron ring 53 embedded in the movable pressing plate 46 is attracted by the electromagnet 52, at this time, the movable pressing plate 46 moves downwards, the spring 51 is in a compressed state, when the vertical bosses 45 in the cylindrical containing shell 44 are clamped in the grooves 47 at the bottom of the movable pressing plate 46, the cylindrical sleeve 48 arranged at the top of the movable pressing plate 46 drives the central rotating shaft 6 to rotate, the central rotating shaft 6 simultaneously drives the driving gear 12 and the first pawls 18 to rotate, wherein the first pawls 18 drive the first ratchet disc 15 to drive the two pulleys 22 to extrude the hose 5, at this time, the second pawls 28 rotatably slide on the second ratchets 27, so that the second ratchet disc 25 cannot rotate, the driving gear 12 drives the driving gear 13 to rotate, and then the driving rotating shaft 7 rotates to wind the spiral spring 9, at the moment, the roll-shaped clockwork spring 9 is in an energy storage state, when the roll-shaped clockwork spring 9 is rolled to the limit, the clockwork spring disc 8 rotates, once the power is cut off, the output shaft of the motor 10 stops rotating, meanwhile, the electromagnet 52 is powered off, the movable pressing plate 46 is upwards pushed by the reset elastic force of the spring 51, so that the grooves 47 are separated from the vertical bosses 45, at the moment, the roll-shaped clockwork spring 9 releases the elastic force, the transmission rotating shaft 7 is driven to reversely rotate, the central rotating shaft 6 is driven to rotate through the transmission effect of the transmission gear 13, the planetary gear mechanism is driven to rotate and reverse through the second ratchet disc 25, finally, the two pulleys 22 are driven to continuously rotate to extrude the hose 5, the pulleys 22 can also continuously rotate to extrude and transmit liquid in the hose 5 in a period of time after the power is cut off, and meanwhile, a medical staff on site starts a standby power supply of a hospital, the motor 10 is powered, so that the whole process of hemodialysis can not be immediately stopped when power is suddenly cut off, and the treatment safety of a patient is effectively ensured.
The above examples, which are intended to represent only one or more embodiments of the present invention, are described in greater detail and with greater particularity, and are not to be construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent should be subject to the appended claims.
Claims (10)
1. Hemodialysis appearance, its characterized in that includes:
the pump comprises a pump shell (1), a semi-closed shell of which the top is of an opening structure and the center is provided with a columnar accommodating groove (2), wherein the outer wall of one side of the pump shell (1) is provided with a liquid inlet (3) and a liquid outlet (4) which are communicated with the columnar accommodating groove (2);
the hose (5) is embedded on the circumferential wall of the columnar holding tank (2) in a U shape, and two ends of the hose (5) are respectively communicated with the liquid inlet (3) and the liquid outlet (4);
the central rotating shaft (6) is vertically and rotatably arranged in the columnar accommodating groove (2), and the lower end of the central rotating shaft (6) vertically and downwards penetrates through the bottom of the pump shell (1);
the roller assembly is arranged on the central rotating shaft (6) and is used for rotating and extruding the hose (5) so that the liquid in the hose (5) flows from the liquid inlet (3) to the liquid outlet (4) along the hose (5);
the energy storage assembly comprises a transmission rotating shaft (7) and a clockwork spring plate (8), the transmission rotating shaft (7) is vertically rotated and arranged beside the central rotating shaft (6) and is in transmission connection with the central rotating shaft (6), the rotation direction of the transmission rotating shaft (7) is opposite to that of the central rotating shaft (6), the clockwork spring plate (8) is arranged right above the transmission rotating shaft (7), a rolled clockwork spring (9) is arranged in the clockwork spring plate (8), and the upper end of the transmission rotating shaft (7) is connected with the rolled clockwork spring (9) and is used for rotationally driving the rolled clockwork spring (9) to roll;
the reversing assembly comprises a first ratchet mechanism, a second ratchet mechanism and a planetary gear mechanism, the central rotating shaft (6) drives the roller assembly to rotate through the first ratchet mechanism after rotating, the second ratchet mechanism is used for transmitting the torque of the transmission rotating shaft (7) to the planetary gear mechanism when the transmission rotating shaft (7) rotates reversely, and steering conversion is carried out through the planetary gear mechanism, so that the roller assembly rotates forwards again;
drive assembly, including motor (10) and normally closed clutch switch, motor (10) are the bottom of vertical fixed locating pump case (1), the output shaft of motor (10) is vertical up, normally closed clutch switch locates between output shaft and central pivot (6) of motor (10), normally closed clutch switch transmits the moment of torsion of motor (10) output shaft in central pivot (6) when motor (10) circular telegram, make the output shaft separation of central pivot (6) and motor (10) when motor (10) outage.
2. The hemodialysis instrument according to claim 1, wherein a first bearing (11) which is vertical in the axial direction is fixedly arranged at the bottom of the columnar accommodating groove (2), the central rotating shaft (6) is coaxially and fixedly connected with an inner ring of the first bearing (11) and then vertically and downwardly penetrates through the pump shell (1), a driving gear (12) is coaxially and fixedly arranged in the middle of the central rotating shaft (6), and a transmission gear (13) which is meshed with the driving gear (12) is coaxially and fixedly arranged on the transmission rotating shaft (7).
3. The hemodialysis machine of claim 1, wherein the first ratchet mechanism comprises:
the second bearing (14) is coaxially sleeved at the upper end of the central rotating shaft (6), and the inner ring of the second bearing (14) is fixedly connected with the central rotating shaft (6);
a first through hole (16) is formed in the center of the first ratchet disc (15), the first through hole is coaxially and fixedly sleeved on an outer ring of the second bearing (14), and a ring of first ratchets (17) are formed on the top of the first ratchet disc (15);
a plurality of first pawls (18) are distributed on one side of a first ratchet wheel disc (15) forming first ratchets (17) in a circular array mode, each first pawl (18) is meshed with the corresponding first ratchets (17), and the first pawls (18) are fixedly connected with the central rotating shaft (6) through first fixing frames (19);
wherein, the roller component is connected with a first ratchet wheel disc (15).
4. The hemodialysis machine of claim 3, wherein the roller assembly comprises:
the connecting cylindrical sleeve (20) is vertically and coaxially sleeved on the central rotating shaft (6), and the top of the connecting cylindrical sleeve (20) is fixedly connected with the bottom of the first ratchet wheel disc (15);
the two transverse supporting rods (21) are symmetrically and fixedly arranged on the outer wall of the connecting cylindrical sleeve (20), and the length direction of each transverse supporting rod (21) is consistent with the radial direction of the central rotating shaft (6);
two pulleys (22), every pulley (22) all link to each other with horizontal branch (21) that correspond through pulley yoke (23), and the axial of every pulley (22) all is vertical and every pulley (22) all can be in the perisporium rotation of column holding tank (2) of laminating.
5. A haemodialysis machine according to claim 3, wherein a second ratchet mechanism is provided between the first ratchet mechanism and the drive gear (12), the second ratchet mechanism comprising:
the third bearing (24) is coaxially sleeved on the central rotating shaft (6), and the inner ring of the third bearing (24) is fixedly connected with the central rotating shaft (6);
a second ratchet wheel disc (25), a second through hole (26) is arranged at the center of the second ratchet wheel disc, the second ratchet wheel disc is coaxially and fixedly sleeved on an outer ring of the third bearing (24), and a second ratchet (27) with a ring of teeth in the opposite direction to the first ratchet (17) is formed at the top of the second ratchet wheel disc (25);
pawl (28) No. two of a plurality of are circular array and distribute in one side of No. two ratchet (27) of No. two ratchet dish (25) shaping, and every pawl (28) No. two all meshes with No. two ratchet (27) mutually, and a plurality of pawl links firmly with central pivot (6) mutually through mount (29) No. two.
6. The hemodialysis machine of claim 5, wherein the planetary gear mechanism comprises:
the central outer gear ring (30) is coaxially fixed and sleeved on the outer wall of the second ratchet wheel disc (25);
the ring-shaped gear carrier (31) is sleeved on the periphery of the central outer gear ring (30), and the bottom of the ring-shaped gear carrier (31) is fixedly connected with the bottom of the columnar accommodating groove (2);
a plurality of planet gears (32) which are axially connected in a circular array in a ring gear carrier (31), and each planet gear (32) is meshed with the central outer gear ring (30);
the inner gear ring (33) is arranged on the periphery of the plurality of planetary gears (32), the inner gear ring (33) is meshed with each planetary gear (32), a plane bearing (34) is arranged below the inner gear ring (33), a lower ring of the plane bearing (34) is abutted against the ring gear carrier (31), and an upper ring is abutted against the bottom of the inner gear ring (33);
the two connecting vertical plates (35) are symmetrically arranged at the top of the inner gear ring (33), and two ends of each connecting vertical plate (35) are fixedly connected with the top of the inner gear ring (33) and the bottom of the corresponding pulley frame (23).
7. The hemodialysis apparatus according to claim 1, wherein the spiral power spring plate (8) is a semi-closed cylindrical shell with an open bottom, the spiral power spring (9) is movably arranged in the spiral power spring plate (8), the end part of the spiral power spring (9) at the outer edge is fixedly connected with the spiral power spring plate (8), a circular cover plate (36) is fixedly connected to the open structure of the spiral power spring plate (8), and a central hole (37) which is opposite to the center of the spiral power spring (9) and through which the upper end of the transmission rotating shaft (7) passes is formed in the circular cover plate (36).
8. The hemodialysis instrument according to claim 7, wherein a rectangular accommodating chamber (38) communicated with the pump housing (1) is formed on a side wall of one side of the pump housing (1), one side of the rectangular accommodating chamber (38) far away from the pump housing (1) is of an open structure, two horizontal support plates (39) which are parallel to each other and are distributed at intervals up and down are fixedly arranged in the rectangular accommodating chamber (38), a vertical sleeve (40) is fixedly arranged at the top of the horizontal support plate (39) positioned above, a circle of rubber ring (41) is embedded in the inner wall of the sleeve (40), an opening of the spring plate (8) is downwards inserted into the rubber ring (41), the outer wall of the spring plate (8) is attached to the inner wall of the rubber ring (41), the transmission shaft (7) is arranged between the two horizontal support plates (39), two ends of the transmission shaft (7) are respectively and are in shaft connection with the two horizontal support plates (39), the upper end of the transmission shaft (7) sequentially penetrates through the horizontal support plate (39) positioned above and the central hole (37) to be in shaft connection with the end of the transmission gear (9) positioned at the center, and the two horizontal support plates (39) are fixedly connected.
9. The hemodialysis instrument of claim 1, wherein the motor (10) is connected to the bottom of the pump housing (1) through a rectangular fixing seat (42), the rectangular fixing seat (42) is shell-shaped and has two symmetrical sides of an opening structure, the top and the bottom of the rectangular fixing seat (42) are respectively provided with an avoiding hole (43) for the central rotating shaft (6) and the output end of the motor (10) to pass through, and the normally closed clutch switch comprises:
the cylindrical accommodating shell (44) is coaxially connected with an output shaft of the motor (10), the top of the cylindrical accommodating shell (44) is of an open structure, a plurality of vertical bosses (45) in a circular array are formed on the inner wall of the cylindrical accommodating shell (44), and the top of each vertical boss (45) is in a smooth round head shape;
the movable pressing plate (46) is circular, the movable pressing plate is coaxially and movably arranged in the cylindrical accommodating shell (44), a plurality of grooves (47) in a circular array are formed in the outer edge of the bottom of the movable pressing plate (46), the upper end of each vertical boss (45) can be clamped in the corresponding groove (47), a vertical cylindrical sleeve (48) is formed in the center of the top of the movable pressing plate (46), the cylindrical sleeve (48) is upwards movably sleeved at the bottom end of the central rotating shaft (6), a plurality of vertical limiting strips (49) in a circular array are formed on the outer wall of the bottom end of the central rotating shaft (6), and a plurality of vertical limiting grooves (50) matched with the vertical limiting strips (49) are formed in the cylindrical sleeve (48);
the spring (51) is vertically arranged in the cylindrical accommodating shell (44), and two ends of the spring (51) are respectively abutted against the bottom of the movable pressing plate (46) and the bottom in the cylindrical accommodating shell (44);
the electromagnet (52) is annular and is embedded at the bottom in the cylindrical accommodating shell (44);
and the annular iron ring (53) is embedded at the bottom of the movable pressing plate (46) and is opposite to the electromagnet (52).
10. The hemodialysis machine of claim 8, wherein the top of the pump housing (1) is hinged with a transparent cover plate (54) for closing the top opening, and the opening of the rectangular containing chamber (38) is fixedly provided with a mounting cover plate (55) for closing the opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210999456.8A CN115501404B (en) | 2022-08-19 | 2022-08-19 | Hemodialysis instrument |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210999456.8A CN115501404B (en) | 2022-08-19 | 2022-08-19 | Hemodialysis instrument |
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| CN115501404A true CN115501404A (en) | 2022-12-23 |
| CN115501404B CN115501404B (en) | 2023-04-21 |
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| CN115501404B (en) | 2023-04-21 |
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