CN113417839B - Liquid pollution-free infusion pump for hydration treatment liquid inlet and outlet balance system - Google Patents
Liquid pollution-free infusion pump for hydration treatment liquid inlet and outlet balance system Download PDFInfo
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- CN113417839B CN113417839B CN202110917586.8A CN202110917586A CN113417839B CN 113417839 B CN113417839 B CN 113417839B CN 202110917586 A CN202110917586 A CN 202110917586A CN 113417839 B CN113417839 B CN 113417839B
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- pump
- shell assembly
- side wall
- driving
- shell
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B43/00—Machines, pumps, or pumping installations having flexible working members
- F04B43/12—Machines, pumps, or pumping installations having flexible working members having peristaltic action
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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
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
- A61M5/142—Pressure infusion, e.g. using pumps
- A61M5/14212—Pumping with an aspiration and an expulsion action
- A61M5/14228—Pumping with an aspiration and an expulsion action with linear peristaltic action, i.e. comprising at least three pressurising members or a helical member
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B43/00—Machines, pumps, or pumping installations having flexible working members
- F04B43/12—Machines, pumps, or pumping installations having flexible working members having peristaltic action
- F04B43/1207—Machines, pumps, or pumping installations having flexible working members having peristaltic action the actuating element being a swash plate
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/20—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by changing the driving speed
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/16—Casings; Cylinders; Cylinder liners or heads; Fluid connections
Abstract
The invention discloses a liquid pollution-free infusion pump for a hydration treatment liquid inlet and outlet balance system, which comprises a driving mechanism, a first pump shell assembly and a second pump shell assembly, wherein the first pump shell assembly and the second pump shell assembly are oppositely arranged, and the driving mechanism is fixedly connected to one end of the first pump shell assembly; the pump comprises a first pump shell assembly, a second pump shell assembly, a first adjusting mechanism and a second adjusting mechanism, wherein the first pump shell assembly is internally provided with a first pump core, the second pump shell assembly is internally provided with a second pump core, the side surfaces of the first pump shell assembly and the second pump shell assembly are both provided with the adjusting mechanisms along the axial direction of the first pump shell assembly, and the first pump core moves along the axial direction of the first pump shell assembly through the adjusting mechanisms. According to the invention, the first pump shell assembly and the second pump shell assembly are matched with each other, so that two pump heads can work simultaneously or one of the two pump heads can work independently, and the flow regulation range is enlarged; the pump head shell is in a cone-barrel shape, and the first motor is far away from the hose and is not located in the same plane, so that the pump body is prevented from being polluted by liquid.
Description
Technical Field
The invention relates to the technical field of hydration treatment infusion pumps. In particular to a liquid pollution-free infusion pump for a hydration treatment liquid inlet and outlet balance system.
Background
In hydration treatment, the infusion speed is controlled by an infusion pump, the infusion pump generally adopts a peristaltic pump, most peristaltic pumps directly drive a pump head through a motor, and when a hose is damaged, liquid flows out of the damaged part and possibly flows into the motor, so that the motor is damaged; the peristaltic pump can generate certain pulsation during infusion, so that the infusion is not stable enough, the number of the rotary rollers cannot be increased without limit, and the flow rate of the pump head can be reduced under the same circular arc and roller structure after the number of the rotary rollers is increased; under the same pipe diameter, the flow regulation of the peristaltic pump can only be regulated within a certain range by controlling the rotating speed of the motor, and the flow regulation range is narrow.
Disclosure of Invention
Therefore, the technical problem to be solved by the invention is to provide the liquid pollution-free infusion pump for the hydration treatment liquid inlet and outlet balance system, which has the advantages of difficult pollution of the infusion pump, large flow adjustable range and stable infusion.
In order to solve the technical problems, the invention provides the following technical scheme: the liquid pollution-free infusion pump for the hydration treatment liquid inlet and outlet balance system comprises a driving mechanism, a first pump shell assembly and a second pump shell assembly, wherein the first pump shell assembly and the second pump shell assembly are oppositely arranged, and the driving mechanism is fixedly connected to one end of the first pump shell assembly; a first pump core is arranged in the first pump shell assembly, a second pump core is arranged in the second pump shell assembly, adjusting mechanisms are arranged on the side surfaces of the first pump shell assembly and the second pump shell assembly along the axial direction of the first pump shell assembly and the second pump shell assembly, the first pump core moves along the axial direction of the first pump shell assembly through the adjusting mechanisms, and the second pump core moves along the axial direction of the second pump shell assembly through the adjusting mechanisms; the power output end of the driving mechanism is in driving connection with the power input end of the first pump core or the power output end of the driving mechanism is in driving connection with the power input end of the first pump core and the power input end of the second pump core.
The liquid pollution-free infusion pump for the hydration treatment liquid inlet and outlet balance system is characterized in that the first pump shell component and the second pump shell component are identical in structure, the first pump shell component comprises a pump head shell and a limiting shell, the side wall of the limiting shell is fixedly connected with the outer side wall of the pump head shell and communicated with the outer side wall of the pump head shell, the limiting shell is arranged along the axial direction of the pump head shell, two pipe penetrating grooves are formed in the side wall of the pump head shell along the generatrix of the side wall of the pump head shell, the two pipe penetrating grooves are respectively formed in two sides of the limiting shell, and the pump head shell of the first pump shell component is opposite to and fixedly connected with the pump head shell of the second pump shell component; one end of the pump head shell is fixedly connected with a baffle, a through hole is formed in the center of the baffle, the side wall of the driving mechanism is fixedly connected to the side wall of the baffle, and the power output end of the driving mechanism penetrates into the first pump shell assembly; the adjusting mechanism is arranged in the limiting shell; the first pump core is disposed within the pump head housing of the first pump housing assembly, and the second pump core is disposed within the pump head housing of the second pump housing assembly.
The liquid pollution-free infusion pump for the hydration treatment liquid inlet and outlet balance system is characterized in that the pump head shell is in a cone barrel shape; the adjusting mechanism comprises a screw rod, a second motor and a driving block, the two ends of the limiting shell are provided with screw rod supports, polished rod parts at the two ends of the screw rod are respectively rotatably connected in the two screw rod supports, the driving block is slidably connected in the limiting shell, the side wall of the driving block is provided with a threaded hole, the screw rod is in threaded connection in the threaded hole of the side wall of the driving block, and the output shaft of the driving motor is in driving connection with one end of the screw rod.
The liquid pollution-free infusion pump for the hydration treatment liquid inlet and outlet balance system comprises a fixed shell, a first motor, a driving shaft sleeve and a driving shaft, wherein the first motor is fixedly connected to the top of the fixed shell, an output shaft of the first motor penetrates through the top wall of the fixed shell, bearing holes are formed in two side walls of the fixed shell, bearings are sleeved at two ends of the driving shaft sleeve, the two bearings are respectively installed in the bearing holes in the two side walls of the fixed shell, a first bevel gear is arranged on the output shaft of the first motor, a second bevel gear is arranged on the driving shaft sleeve, the first bevel gear and the second bevel gear are meshed with each other, and the driving shaft is in transmission connection with the driving shaft sleeve; the side wall of the fixed shell is fixedly connected with one end of the first pump shell assembly, and the driving shaft penetrates into the first pump shell assembly and is in driving connection with the first pump core or penetrates into the first pump shell assembly and is in driving connection with the first pump core and penetrates into the second pump shell assembly and is in driving connection with the second pump core.
The liquid pollution-free infusion pump for the hydration treatment liquid inlet and outlet balance system is characterized in that the section of the driving shaft is square, the outer contour of the cross section of the driving shaft sleeve is circular, the cross section of the driving hole in the driving shaft sleeve is square, and the driving shaft penetrates through the driving hole in the driving shaft sleeve.
The liquid pollution-free infusion pump for the hydration treatment liquid inlet and outlet balance system is characterized in that the first pump core and the second pump core are identical in structure, the first pump core comprises a driving disc, a supporting bar, a rotating roller and a sleeve, the sleeve penetrates through the center of the side wall of the driving disc and is fixedly connected with the driving disc, two or more than two guide grooves are radially formed in the side wall of the driving disc and are uniformly distributed along the circumferential direction of the driving disc, the supporting bar is connected in the guide grooves in a sliding manner, a roller shaft is vertically and fixedly connected to the side wall of one end, away from the axis of the driving disc, of the supporting bar, the rotating roller is rotatably connected to the roller shaft, and a hinge seat is fixedly connected to the side wall of the supporting bar; the first end surface of the sleeve is sleeved with a connecting ring, the side wall of the connecting ring is uniformly hinged with two or more than two connecting rods along the circumferential direction of the connecting ring, the other end of each connecting rod is hinged with a hinged seat of the side wall of the supporting bar, the side wall of the driving disc is vertically and fixedly connected with an electric push rod, the driving end of the electric push rod is fixedly connected with a connecting frame, and the other end of the connecting frame is fixedly connected with the side wall of the connecting ring; the surface of the second end of the sleeve is rotatably connected with a shaft sleeve, the side wall of the shaft sleeve is fixedly connected with a supporting rod, and the bottom end of the supporting rod is fixedly connected with the driving end of the adjusting mechanism; the side wall of the rotating roller of the first pump core is in lap joint with the inner side wall of the first pump shell assembly, and the side wall of the rotating roller of the second pump core is in lap joint with the inner side wall of the second pump shell assembly.
The liquid pollution-free infusion pump for the hydration treatment liquid inlet and outlet balance system is characterized in that the rotary roller is in a cone frustum shape; the first end side wall of the rotary roller is provided with a first annular groove along the circumferential direction, a first annular plate is sleeved in the first annular groove, two or more first tension springs are uniformly arranged on the inner side wall of the first annular plate along the circumferential direction, and the other ends of the two or more tension springs are fixedly connected with the groove bottom wall of the first annular groove; the second end lateral wall of the rotary roller is provided with a second annular groove along the circumferential direction, a second annular plate is sleeved in the second annular groove, two or more second tension springs are evenly arranged on the inner side wall of the second annular plate along the circumferential direction, and the other end of each second tension spring is fixedly connected with the bottom wall of the second annular groove.
Above-mentioned a exempt from liquid contamination transfer pump for hydration treatment business turn over liquid balanced system, first pump core with the second pump core is coaxial just first pump core with when the guide way of second pump core coincides completely: the drive shaft hole of the first pump core and the drive shaft hole of the second pump core are not overlapped.
The technical scheme of the invention achieves the following beneficial technical effects:
1. according to the invention, the first pump shell assembly and the second pump shell assembly are matched with each other, so that two pump heads can work simultaneously or one of the two pump heads can work independently, and the flow regulation range is enlarged; under the condition of same-pipe-diameter conveying, when the rotary roller of the first pump core and the rotary roller of the second pump core synchronously work, a certain angle difference exists, the pulsation generated by the synchronous work of the two pump heads can be mutually overlapped in a staggered way, the pulsation frequency of a main output pipeline is improved, and the relatively stable transfusion is ensured; traditional peristaltic pump utilizes and improves the rotational speed and improve when the pulsation frequency guarantees that the infusion is steady, must improve the flow, guarantees the flow and does not increase again in order to guarantee that the infusion is steady, just needs to change thinner hose, and above-mentioned structure is under the prerequisite that does not improve motor speed and change hose, just can guarantee the stationarity of infusion, under the same flow, when improving the stationarity, can also reduce motor speed.
2. According to the invention, by arranging the first pump core and the second pump core which can be adjusted, the distance between the rotating rollers and the axis of the driving shaft can be adjusted, namely, the distance of the arc section formed between two adjacent rotating rollers can be adjusted, so that the characteristic of adjusting the flow rate under the same rotating speed of the motor is realized, and in actual use, the flow rate adjusting range is further improved by adjusting the first pump core and matching with the rotating speed of the motor; when the peristaltic pump stops operating, the two ends of the pipeline are in a disconnected state, and the two ends of the pipeline are required to be communicated with each other difficultly.
3. According to the invention, the movable first annular plate and the second annular plate are arranged at two ends of the rotary roller, when the rotary roller is pressed on the pump head shell, the first annular plate and the second annular plate shrink, so that the pressing of the hose is not influenced, and the hose can be blocked and prevented from deviating; when the position of the rotary roller is adjusted, the corresponding tension springs pull the first annular plate and the second annular plate to reset, and the effect of preventing the hose from deviating during adjustment is achieved.
4. According to the invention, the pump head shell is in a conical barrel shape, the first motor is far away from the hose and is not positioned in the same plane, and even if the hose is broken to cause liquid to flow out, the liquid can flow to the lower end along the pump head shell and cannot flow into the first motor, so that the pump body is prevented from being polluted by the liquid, and the motor is prevented from being corroded by the liquid.
Drawings
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a schematic front sectional view of the present invention;
FIG. 3 is a schematic front perspective view of a first pump core of the present invention;
FIG. 4 is a schematic rear perspective view of a first pump core of the present invention;
FIG. 5 is a schematic cross-sectional view of a roller according to the present invention;
FIG. 6 is a side view of a first pump cartridge of the present invention;
figure 7 is a side view of a second exemplary embodiment of the present invention.
The reference numbers in the figures denote: 1-a drive mechanism; 101-a first motor; 102-a stationary shell; 103-a first bevel gear; 104-a second bevel gear; 105-a bearing; 106-drive sleeve; 107-drive shaft; 2-a first pump housing assembly; 201-pump head casing; 202-a limit shell; 203-pipe penetrating groove; 3-a second pump housing assembly; 4-a first pump core; 401 — a drive disc; 402-a guide groove; 403-supporting strips; 404-a rotating roller; 405-a hinged seat; 406-a link; 407-connecting ring; 408-a sleeve; 409-an electric push rod; 410-a connecting frame; 411-a support bar; 412-roller shaft; 413 — a first annular groove; 414-first extension spring; 415-a first annular plate; 416-a second annular groove; 417-a second extension spring; 418-a second annular plate; 419-a drive shaft hole; 41-a second pump core; 5-an adjusting mechanism; 501-a screw rod; 502-a second electric machine; 503-lead screw support; 504-drive block.
Detailed Description
Referring to fig. 1-2, a liquid contamination free infusion pump for a hydration treatment inlet and outlet balance system includes a driving mechanism 1, a first pump housing assembly 2 and a second pump housing assembly 3, wherein the first pump housing assembly 2 and the second pump housing assembly 3 are disposed opposite to each other, and the driving mechanism 1 is fixedly connected to one end of the first pump housing assembly 2; be provided with first pump core 4 in the first pump case subassembly 2, be provided with second pump core 41 in the second pump case subassembly 3, mutually support through setting up first pump case subassembly 2 and second pump case subassembly 3, two pump heads can simultaneous working or one of them isolated operation, increase the scope of flow control, first pump case subassembly 2 with the side of second pump case subassembly 3 all is provided with adjustment mechanism 5 along its axial, first pump core 4 passes through adjustment mechanism 5 follows the axial motion of first pump case subassembly 2, second pump core 41 passes through adjustment mechanism 5 follows the axial motion of second pump case subassembly 3.
As shown in fig. 2, the first pump housing assembly 2 and the second pump housing assembly 3 have the same structure, the first pump housing assembly 2 includes a pump head housing 201 and a limiting housing 202, a side wall of the limiting housing 202 is fixedly connected with and communicated with an outer side wall of the pump head housing 201, the limiting housing 202 is arranged along an axial direction of the pump head housing 201, two pipe penetrating grooves 203 are formed on a side wall of the pump head housing 201 along a generatrix thereof, the two pipe penetrating grooves 203 are respectively formed on two sides of the limiting housing 202, the pump head housing 201 of the first pump housing assembly 2 is opposite to the pump head housing 201 of the second pump housing assembly 3 and is connected with the pump head housing 201 of the second pump housing assembly 3 through bolts; one end of the pump head shell 201 is fixedly connected with a baffle, a through hole is formed in the center of the baffle, the side wall of the driving mechanism 1 is fixedly connected to the side wall of the baffle, and the power output end of the driving mechanism 1 penetrates into the first pump shell component 2; the adjusting mechanism 5 is arranged in the limiting shell 202; the first pump core 4 is arranged in the pump head shell 201 of the first pump shell assembly 2, the second pump core 41 is arranged in the pump head shell 201 of the second pump shell assembly 3, the shape of the pump head shell 201 is a conical barrel shape, the first motor 101 is far away from the hose and is not in the same plane, even if the hose is broken to cause liquid outflow, the liquid can flow to the lower end along the pump head shell 201 and cannot flow into the first motor 101, so that the pump body is prevented from being polluted by the liquid, and the motor is prevented from being corroded by the liquid; the adjusting mechanism 5 comprises a screw rod 501, a second motor 502 and a driving block 504, the two ends of the limiting shell 202 are respectively provided with the screw rod supports 503, polished rod parts at the two ends of the screw rod 501 are respectively rotatably connected in the two screw rod supports 503, the driving block 504 is slidably connected in the limiting shell 202, the side wall of the driving block 504 is provided with a threaded hole, the screw rod 501 is in threaded connection in the threaded hole of the side wall of the driving block 504, and the output shaft of the driving motor is in driving connection with one end of the screw rod 501.
As shown in fig. 2, the driving mechanism 1 includes a fixed shell 102, a first motor 101, a driving shaft sleeve 106 and a driving shaft 107, the first motor 101 is fixedly connected to the top of the fixed shell 102, an output shaft of the first motor 101 penetrates through a top wall of the fixed shell 102, two side walls of the fixed shell 102 are respectively provided with a bearing hole, two ends of the driving shaft sleeve 106 are respectively sleeved with a bearing 105, the two bearings 105 are respectively installed in the bearing holes of the two side walls of the fixed shell 102, the output shaft of the first motor 101 is provided with a first bevel gear 103, the driving shaft sleeve 106 is provided with a second bevel gear 104, the first bevel gear 103 and the second bevel gear 104 are engaged with each other, the driving shaft 107 is connected in the driving shaft sleeve 106 in a transmission manner, the cross section of the driving shaft 107 is square, and the cross section of the driving shaft sleeve 106 is circular in outer profile, the cross section of the driving hole in the driving shaft sleeve 106 is a square hole, and the driving shaft 107 passes through the driving hole in the driving shaft sleeve 106; the side wall of the fixed shell 102 is fixedly connected with the baffle plate of the side wall of the first pump shell assembly 2, the driving shaft 107 passes through the through hole of the baffle plate side wall and is in driving connection with the first pump core 4, or the driving shaft 107 penetrates into the first pump shell assembly 2 and is in driving connection with the first pump core 4 and penetrates into the second pump shell assembly 3 and is in driving connection with the second pump core 41.
As shown in fig. 3 and 4, the first pump core 4 and the second pump core 41 have the same structure, the first pump core 4 includes a driving disc 401, a supporting strip 403, a rotating roller 404 and a sleeve 408, the sleeve 408 penetrates through the center of the side wall of the driving disc 401, the sleeve 408 is fixedly connected to the driving disc 401, two or more guide slots 402 are radially formed in the side wall of the driving disc 401, the two or more guide slots 402 are uniformly distributed along the circumferential direction of the driving disc, the supporting strip 403 is slidably connected in the guide slots 402, a roller shaft 412 is vertically and fixedly connected to the side wall of one end of the supporting strip 403, which is far away from the axis of the driving disc 401, the rotating roller 404 is rotatably connected to the roller shaft 412, the rotating roller 404 is in a truncated cone shape, and a first annular groove 413 is formed in the circumferential direction of the first end side wall of the rotating roller 404, a first annular plate 415 is sleeved in the first annular groove 413, two or more first tension springs 414 are uniformly arranged on the inner side wall of the first annular plate 415 along the circumferential direction of the first annular plate, and the other ends of the two or more first tension springs are fixedly connected with the bottom wall of the first annular groove 413; a second annular groove 416 is formed in the side wall of the second end of the rotating roller 404 along the circumferential direction of the rotating roller, a second annular plate 418 is sleeved in the second annular groove 416, two or more second tension springs 417 are uniformly arranged on the inner side wall of the second annular plate 418 along the circumferential direction of the second annular groove, the other ends of the second tension springs 417 are fixedly connected with the bottom wall of the second annular groove 416, a movable first annular plate 415 and a movable second annular plate 418 are arranged at two ends of the rotating roller 404, when the rotating roller 404 is pressed on the pump head shell 201, the first annular plate 415 and the second annular plate 418 are contracted, the pressing of the hose is not affected, and meanwhile, the hose can be blocked, and the deviation of the hose can be avoided; when the position of the rotating roller 404 is adjusted, the corresponding tension springs pull the first annular plate 415 and the second annular plate 418 to reset, so as to prevent the hose from deviating during adjustment, and the hinged seat 405 is fixedly connected to the side wall of the supporting bar 403; a connecting ring 407 is sleeved on the first end surface of the sleeve 408, two or more than two connecting rods are uniformly hinged to the side wall of the connecting ring 407 along the circumferential direction of the connecting ring, the other ends of the connecting rods are hinged to a hinge seat 405 on the side wall of the supporting bar 403, an electric push rod 409 is vertically and fixedly connected to the side wall of the driving disc 401, a connecting frame 410 is fixedly connected to the driving end of the electric push rod 409, and the other end of the connecting frame 410 is fixedly connected to the side wall of the connecting ring 407; the second end surface of the sleeve 408 is rotatably connected with a shaft sleeve, the side wall of the shaft sleeve is fixedly connected with a support rod 411, the bottom end of the support rod 411 of the first pump core 4 is fixedly connected with the top of the drive block 504 on the side surface of the first pump shell component 2, the bottom end of the support rod 411 of the second pump core 41 is fixedly connected with the top of the drive block 504 on the side surface of the second pump shell component 3, the distance between the rotating rollers 404 and the axis of the drive shaft 107 can be adjusted by arranging the adjustable first pump core 4 and the adjustable second pump core 41, namely, the distance between the adjacent two rotating rollers 404 forming an arc section can be adjusted, the characteristic of adjusting the flow rate can be realized under the same rotating speed of the motor, and in actual use, the flow rate adjusting range is further improved by adjusting the first pump core 4 and matching with the rotating speed of the motor; when the peristaltic pump stops operating, the two ends of the pipeline are in a disconnected state, and the two ends of the pipeline are required to be communicated with each other more difficultly, but the position of the rotating roller 404 can be adjusted, and the pipeline can be communicated by controlling the rotating roller 404 to contract inwards; the side wall of the rotary roller 404 of the first pump core 4 is overlapped with the inner side wall of the pump head shell 201 of the first pump shell assembly 2, and the side wall of the rotary roller 404 of the second pump core 41 is overlapped with the inner side wall of the pump head shell 201 of the second pump shell assembly 3; as shown in fig. 5 and 6, when the first pump core 4 and the second pump core 41 are coaxial and the guide grooves 402 of the first pump core 4 and the second pump core 41 are completely overlapped: the driving shaft hole 419 of the first pump core 4 and the driving shaft hole 419 of the second pump core 41 are not overlapped, and under the same-diameter conveying condition, when the rotating rollers 404 of the first pump core 4 and the rotating rollers 404 of the second pump core 41 synchronously work, a certain angle difference exists, the pulses generated by the synchronous work of the two pump heads can be mutually overlapped in a staggered manner, so that the frequency of the pulse of a total output pipeline is improved, and the relatively stable infusion is ensured; traditional peristaltic pump utilizes and improves the rotational speed and improve when the pulsation frequency guarantees that the infusion is steady, must improve the flow, guarantees the flow and does not increase again in order to guarantee that the infusion is steady, just needs to change thinner hose, and above-mentioned structure is under the prerequisite that does not improve motor speed and change hose, just can guarantee the stationarity of infusion, under the same flow, when improving the stationarity, can also reduce motor speed.
The working process is as follows: as shown in fig. 3, firstly, extending an electric push rod 409 controlling the first pump core 4, the electric push rod 409 driving a connecting ring 407 to be far away from the driving disc 401 through a connecting frame 410, the connecting ring 407 pulling a connecting rod 406 and driving a supporting bar 403 to be close to the axis of the driving disc 401, making a rotating roller 404 to be far away from the inner side wall of the pump head shell 201, after the rotating roller 404 is far away from the inner side wall of the pump head shell 201, pulling a first annular plate 415 and a second annular plate 418 to be reset by a first tension spring 414 and a second tension spring 417, the first annular plate 415, the second annular plate 418 and the rotating roller 404 being coaxial, then penetrating one end of a hose from one pipe penetrating groove 203 and lapping on the surface of the rotating roller 404 and then penetrating out from the other pipe penetrating groove 203, completing preliminary installation, installing the second pump core 41 in the same way, and then butting and fixing the first pump shell component 2 and the second pump shell component 3 through bolts;
when a pump head needs to be operated, the driving shaft 107 is pushed inwards, the driving shaft 107 penetrates into the first pumping driving shaft hole 419, the position of the pump core is adjusted as required, and when the position is adjusted, the driving screw 501 rotates to drive the driving block 504 to axially move by controlling the rotation of the second motor 502, so that the first pump core 4 is driven to axially move in the first pump shell assembly 2, so that different arc lengths are obtained, then the electric push rod 409 is controlled to contract, the connecting ring 407 drives the connecting rod 406, so that the supporting bar 403 is far away from the axis of the driving disc 401, so that the rotating roller 404 presses the hose, and when the rotating roller 404 is close to the pump head shell 201, the first annular plate 415 and the second annular plate 418 firstly contact the inner side wall of the pump head shell 201, and corresponding sides of the first annular plate and the second annular plate contract into the corresponding first annular groove 413 and the second annular groove 416 under the pressure; then, the first motor 101 is started, the first motor 101 drives the driving shaft sleeve 106 through the first bevel gear 103 and the second bevel gear 104, the driving shaft sleeve 106 drives the driving shaft 107 to rotate after rotating, and the driving shaft 107 transmits power to enable the first pump core 4 to move along with the driving shaft 107;
when two pump heads need to be operated, the driving shaft 107 is pushed inwards, the driving shaft 107 penetrates into the driving shaft hole 419 of the first pump core 4 and the driving shaft hole 419 of the second pump core 41, and similarly, after the first motor 101 is started, the driving shaft 107 transmits power to enable the first pump core 4 and the second pump core 41 to move.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications derived therefrom are intended to be within the scope of the claims of this patent.
Claims (5)
1. The liquid pollution-free infusion pump for the hydration treatment liquid inlet and outlet balance system is characterized by comprising a driving mechanism (1), a first pump shell assembly (2) and a second pump shell assembly (3), wherein the first pump shell assembly (2) and the second pump shell assembly (3) are arranged oppositely, and the driving mechanism (1) is fixedly connected to one end of the first pump shell assembly (2); a first pump core (4) is arranged in the first pump shell assembly (2), a second pump core (41) is arranged in the second pump shell assembly (3), adjusting mechanisms (5) are arranged on the side surfaces of the first pump shell assembly (2) and the second pump shell assembly (3) along the axial direction of the first pump shell assembly and the second pump shell assembly, the first pump core (4) moves along the axial direction of the first pump shell assembly (2) through the adjusting mechanisms (5), and the second pump core (41) moves along the axial direction of the second pump shell assembly (3) through the adjusting mechanisms (5); the power output end of the driving mechanism (1) is in driving connection with the power input end of the first pump core (4) or the power output end of the driving mechanism (1) is in driving connection with the power input end of the first pump core (4) and the power input end of the second pump core (41); the first pump shell assembly (2) and the second pump shell assembly (3) are identical in structure, the first pump shell assembly (2) comprises a pump head shell (201) and a limiting shell (202), the side wall of the limiting shell (202) is fixedly connected with the outer side wall of the pump head shell (201) and communicated with the outer side wall of the pump head shell, the limiting shell (202) is arranged along the axial direction of the pump head shell (201), the side wall of the pump head shell (201) is provided with two pipe penetrating grooves (203) along the generatrix of the side wall, the two pipe penetrating grooves (203) are respectively arranged on two sides of the limiting shell (202), and the pump head shell (201) of the first pump shell assembly (2) is opposite to and fixedly connected with the pump head shell (201) of the second pump shell assembly (3); one end of the pump head shell (201) is fixedly connected with a baffle, a through hole is formed in the center of the baffle, the side wall of the driving mechanism (1) is fixedly connected to the side wall of the baffle, and the power output end of the driving mechanism (1) penetrates into the first pump shell assembly (2); the adjusting mechanism (5) is arranged in the limiting shell (202); the first pump core (4) is arranged in a pump head shell (201) of the first pump shell assembly (2), and the second pump core (41) is arranged in a pump head shell (201) of the second pump shell assembly (3); the pump head shell (201) is in a cone-barrel shape; the adjusting mechanism (5) comprises a screw rod (501), a second motor (502) and a driving block (504), screw rod supports (503) are arranged at two ends of the limiting shell (202), polished rod parts at two ends of the screw rod (501) are respectively and rotatably connected in the two screw rod supports (503), the driving block (504) is slidably connected in the limiting shell (202), a threaded hole is formed in the side wall of the driving block (504), the screw rod (501) is in threaded connection in the threaded hole in the side wall of the driving block (504), and an output shaft of the second motor (502) is in driving connection with one end of the screw rod (501); the structure of the first pump core (4) is the same as that of the second pump core (41), the first pump core (4) comprises a driving disc (401), a supporting strip (403), a rotating roller (404) and a sleeve (408), the sleeve (408) penetrates through the center of the side wall of the driving disc (401), the sleeve (408) is fixedly connected with the driving disc (401), two or more guide grooves (402) are radially formed in the side wall of the driving disc (401), the two or more guide grooves (402) are uniformly distributed along the circumferential direction of the driving disc (401), the supporting strip (403) is slidably connected in the guide grooves (402), a roller shaft (412) is vertically and fixedly connected to the side wall of one end, far away from the axis of the driving disc (401), of the supporting strip (403), and the rotating roller (404) is rotatably connected to the roller shaft (412), the side wall of the supporting strip (403) is fixedly connected with a hinge seat (405); a connecting ring (407) is sleeved on the first end surface of the sleeve (408), two or more than two connecting rods are uniformly hinged to the side wall of the connecting ring (407) along the circumferential direction of the connecting ring, the other ends of the connecting rods are hinged to a hinge seat (405) on the side wall of the supporting bar (403), an electric push rod (409) is vertically and fixedly connected to the side wall of the driving disc (401), a connecting frame (410) is fixedly connected to the driving end of the electric push rod (409), and the other end of the connecting frame (410) is fixedly connected to the side wall of the connecting ring (407); the second end surface of the sleeve (408) is rotatably connected with a shaft sleeve, the side wall of the shaft sleeve is fixedly connected with a supporting rod (411), and the bottom end of the supporting rod (411) is fixedly connected with a driving block (504) of the adjusting mechanism (5); the side wall of the rotating roller (404) of the first pump core (4) is overlapped with the inner side wall of the first pump shell assembly (2), and the side wall of the rotating roller (404) of the second pump core (41) is overlapped with the inner side wall of the second pump shell assembly (3).
2. The infusion pump free of liquid pollution for the balance system of hydration treatment liquid inlet and outlet according to claim 1, wherein the driving mechanism (1) comprises a fixed shell (102), a first motor (101), a driving shaft sleeve (106) and a driving shaft (107), the first motor (101) is fixedly connected to the top of the fixed shell (102), an output shaft of the first motor (101) penetrates through the top wall of the fixed shell (102), bearing holes are formed in two side walls of the fixed shell (102), bearings (105) are sleeved at two ends of the driving shaft sleeve (106), the two bearings (105) are respectively installed in the bearing holes in the two side walls of the fixed shell (102), a first bevel gear (103) is arranged on the output shaft of the first motor (101), and a second bevel gear (104) is arranged on the driving shaft sleeve (106), the first bevel gear (103) and the second bevel gear (104) are meshed with each other, and the driving shaft (107) is in transmission connection with the driving shaft sleeve (106); the side wall of the fixed shell (102) is fixedly connected with one end of the first pump shell assembly (2), and the driving shaft (107) penetrates into the first pump shell assembly (2) and is in driving connection with the first pump core (4) or the driving shaft (107) penetrates into the first pump shell assembly (2) and is in driving connection with the first pump core (4) and penetrates into the second pump shell assembly (3) and is in driving connection with the second pump core (41).
3. The fluid contamination free infusion pump for a hydration treatment fluid in and out equilibration system according to claim 2, wherein the cross sectional shape of the drive shaft (107) is square, the cross sectional outer profile of the drive shaft sleeve (106) is circular, the cross sectional shape of the drive bore in the drive shaft sleeve (106) is square, and the drive shaft (107) passes through the drive bore in the drive shaft sleeve (106).
4. The fluid contamination free infusion pump for a hydration treatment fluid in and out balancing system of claim 1, wherein the roller (404) is shaped as a truncated cone; a first annular groove (413) is formed in the side wall of the first end of the rotating roller (404) along the circumferential direction of the rotating roller, a first annular plate (415) is sleeved in the first annular groove (413), two or more first tension springs (414) are uniformly arranged on the inner side wall of the first annular plate (415) along the circumferential direction of the first annular plate, and the other ends of the two or more first tension springs are fixedly connected with the bottom wall of the first annular groove (413); second annular groove (416) have been seted up along its circumference to the second end lateral wall of commentaries on classics roller (404), the endotheca of second annular groove (416) has second annular plate (418), the inside wall of second annular plate (418) evenly is provided with two or more second extension springs (417) along its circumference, the other end of second extension spring (417) with the tank bottom wall fixed connection of second annular groove (416).
5. The fluid contamination free infusion pump for a hydration treatment fluid in and out balancing system of claim 1, wherein when the first pump core (4) and the second pump core (41) are coaxial and the guide grooves (402) of the first pump core (4) and the second pump core (41) are fully coincident: the drive shaft hole (419) of the first pump core (4) and the drive shaft hole (419) of the second pump core (41) do not coincide.
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| CN202110917586.8A CN113417839B (en) | 2021-08-11 | 2021-08-11 | Liquid pollution-free infusion pump for hydration treatment liquid inlet and outlet balance system |
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| CN113417839B true CN113417839B (en) | 2022-08-30 |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN203548140U (en) * | 2013-11-04 | 2014-04-16 | 珠海健帆生物科技股份有限公司 | Single-pump-core double-pipe peristaltic pump |
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| CH658496A5 (en) * | 1982-07-27 | 1986-11-14 | Hans Jakob Guldener | HOSE CRUSH PUMP. |
| CN2533292Y (en) * | 2002-03-23 | 2003-01-29 | 河南玛纳建筑模板有限公司 | Multi-roller extrusion pump |
| CN101210553A (en) * | 2006-12-26 | 2008-07-02 | 张和强 | Peristaltic pump |
| CN101078398A (en) * | 2007-07-03 | 2007-11-28 | 周天清 | Rolling extrusion soft variable-volume fluid mechanical device |
| KR101006479B1 (en) * | 2010-10-06 | 2011-01-06 | 김은수 | Hose pump enabling easy control of hose compression power |
| CN206092347U (en) * | 2016-10-21 | 2017-04-12 | 广东肯富来泵业股份有限公司 | Liquid rotary pump unit |
| CN212055066U (en) * | 2020-04-03 | 2020-12-01 | 保定准择恒流泵制造有限公司 | Peristaltic pump head and peristaltic pump |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN203548140U (en) * | 2013-11-04 | 2014-04-16 | 珠海健帆生物科技股份有限公司 | Single-pump-core double-pipe peristaltic pump |
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