CN212090411U

CN212090411U - Novel external blood auxiliary peristaltic pump

Info

Publication number: CN212090411U
Application number: CN202020161526.9U
Authority: CN
Inventors: 刘敏
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-02-11
Filing date: 2020-02-11
Publication date: 2020-12-08
Anticipated expiration: 2030-02-11

Abstract

The utility model discloses a novel blood auxiliary peristaltic pump of external formula, including the pump body, the inside of the pump body is rotated and is connected with the pivot, and the support has been cup jointed in the activity on the lateral wall of pivot, rotates on the support and is connected with a plurality of gyro wheels, and the left side of cavity is equipped with the arc wall, is equipped with the hose between arc wall and the gyro wheel, and adjustment mechanism and follow two pipe orifices departments respectively and outside pipe connection are all walked around at the both ends of hose, the utility model discloses a rotate butterfly nut, make the screw rod take the base to slide then, the guide pillar can carry out the regulation of certain degree to the hose this moment, has guaranteed the device's velocity of flow stability to convenient the dismantlement need not additional instrument when changing.

Description

Novel external blood auxiliary peristaltic pump

Technical Field

The utility model relates to the technical field of medical equipment, in particular to a novel external blood auxiliary peristaltic pump.

Background

At present, the peristaltic pump has the characteristics of no pollution, high precision and good sealing property, but the conventional peristaltic pump has a complex structure and high cost, is quite complicated when a hose is replaced, and can be replaced only by locking the hose by using different tools or screws; the peristaltic pump is a non-contact pump, and liquid is transmitted by squeezing the friction hose, so that the hose is a consumable and needs to be replaced regularly, but in the actual hose installation process, the hose length cannot be completely matched with the roller, so that the hose and the roller are too loose or too tight, and the transfusion amount is inaccurate; in addition, after the flexible pipe is used for a period of time, the length of the flexible pipe can be stretched and deformed to a certain extent due to friction, extrusion and the like, so that the pipeline is loosened, and the volume of pillow-shaped fluid flowing in the flexible pipe is changed, so that the flow rate is influenced. Therefore, a novel blood-assisted peristaltic pump in an extracorporeal mode is provided.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a novel blood-assisted peristaltic pump of external formula to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a novel blood auxiliary peristaltic pump of external formula, includes the pump body, the pump body includes casing and upper cover, open the inside of the pump body has the cavity, the inside of cavity is rotated and is connected with the pivot, the lower extreme of pivot and actuating mechanism's output shaft, actuating mechanism drive pivot is rotatory, the support has been cup jointed in the activity on the lateral wall of pivot, it is connected with a plurality of gyro wheels to rotate on the support, the left side of cavity is equipped with the arc wall, be equipped with the hose between arc wall and the gyro wheel, adjustment mechanism is all walked around and two mouths of pipe are located and external pipe connection are followed respectively to the both ends of hose, and two mouths of pipe are opened on the left side lateral wall of the pump.

Preferably, the adjusting mechanism comprises two bases, guide pillars are fixedly connected to the upper sides of the two bases, the hose is wound on the side walls of the two guide pillars, sliders are fixedly connected to the lower sides of the two bases, the sliders are connected to the inner portions of the sliding grooves in a sliding mode, the sliding grooves are formed in the side walls of the cavity, screw rods are fixedly connected to the side walls of the two bases, penetrate through the side walls of the cavity, extend to the outer portions of the pump body, and are meshed and sleeved with butterfly nuts.

Preferably, a plurality of butt joint blocks of right side fixedly connected with of upper cover, butt joint block activity joint is in the inside in joint groove, the joint groove is opened on the right side wall of casing, the left side of upper cover is through the left side fixed connection of turn button and casing.

Preferably, the inside of the pipe orifice is movably clamped with a clamping block, the inside of the clamping block is movably inserted with a through pipe, the inner end of the through pipe is inserted at the end part of the hose, and the outer end of the through pipe is movably connected with an external pipeline.

Preferably, the fixture block includes fixture block and lower fixture block, just it has two rings of spacing grooves to go up fixture block and division down on the fixture block, the hose is close to the one end of fixture block for the expansion end and be equipped with the rand that corresponds with the spacing groove on it, the siphunculus also is equipped with the rand that corresponds with the spacing groove.

Preferably, the lower fixture block is provided with a positioning hole, and the upper fixture block is provided with a corresponding positioning rod.

Preferably, actuating mechanism includes quick-witted case, quick-witted case fixed connection is on the downside of the pump body, the inside fixedly connected with motor of quick-witted case, the output shaft of motor passes through gear and is connected with the pivot.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model can easily take off the upper cover to replace the hose by manually unscrewing the two rotating buttons, the operation is simple and quick without tools, and after the upper cover is taken off, the bracket and the roller can be taken off from the rotating shaft, thereby being more convenient for replacing the hose; through the motor speed who changes the device, a slew velocity for adjusting the support, thereby a pulsation degree for adjusting the device, through the fixture block joint in mouth of pipe department, the both ends of back hose on the siphunculus are pegged graft to the hose like this and are fixed, through rotating butterfly nut, make the screw rod take the base to slide then, the guide pillar also can slide along with the base like this, the guide pillar can cause not equidimension drawing to the hose this moment, thereby adjust the laminating degree between hose and the gyro wheel, thereby reduce the flow variation that system error brought as far as.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a schematic structural view of the bracket, the roller, the adjusting mechanism and the hose of the present invention;

FIG. 3 is an exploded view of the housing and the upper cover of the present invention;

FIG. 4 is an exploded view of the housing, shaft, bracket and hose of the present invention;

fig. 5 is a cross-sectional view of the housing and the adjustment mechanism of the present invention;

FIG. 6 is a cross-sectional view of the pump body, the driving mechanism and the rotating shaft of the present invention;

FIG. 7 is an exploded view of the fixture block, the through pipe and the hose of the present invention;

fig. 8 is an exploded view of the fixture block and the through pipe of the present invention.

In the figure: 1. the pump body, 101, the casing, 102, the upper cover, 2, the cavity, 3, the pivot, 4, the support, 5, the gyro wheel, 6, actuating mechanism, 601, the quick-witted case, 602, the motor, 603, gear mechanism, 7, arc wall, 8, the hose, 9, adjustment mechanism, 901, base, 902, guide pillar, 903, slider, 904, spout, 905, screw rod, 906, butterfly nut, 10, the mouth of pipe, 11, the fixture block, 1101, the upper fixture block, 1102, the lower fixture block, 1103, spacing groove, 1104, the locating hole, 12, siphunculus, 13, butt joint piece, 14, joint groove, 15, the turn button, 16, the rand, 17, recess, 18, lug.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-8, the present invention provides a technical solution: an external novel blood-assisted peristaltic pump comprises a pump body 1, wherein the pump body 1 comprises a shell 101 and an upper cover 102, the upper cover 102 is arranged above the shell 101 and used for sealing the device, a cavity 2 is formed in the pump body 1, a rotating shaft 3 is rotatably connected in the cavity 2, in order to ensure that the rotating shaft 3 can rotate stably and reduce friction resistance, a bearing is arranged at the joint of the lower end of the rotating shaft 3 and the side wall of the cavity 2, the lower end of the rotating shaft 3 is connected with an output shaft of a driving mechanism 6, the driving mechanism 6 drives the rotating shaft 3 to rotate, a support 4 is movably sleeved on the outer side wall of the rotating shaft 3, a spline is arranged on the outer side wall of the rotating shaft 3, a key groove is arranged on a hole in which the support 4 is sleeved on the rotating shaft 3, the spline is positioned in the key groove to form a clamping fit, when the rotating shaft 3 rotates, because the spline is positioned in the, therefore, the rotating shaft 3 provides rotating power for the support 4, the support 4 is rotatably connected with the plurality of rollers 5, the left side of the cavity 2 is provided with the arc-shaped wall 7, the hose 8 is arranged between the arc-shaped wall 7 and the rollers 5, the hose 8 is made of silica gel materials and has certain elasticity and resilience, after the rollers 5 and the arc-shaped wall 7 flatten the hose 8, after the extrusion force is eliminated, the inner hole of the hose 8 can be quickly opened to realize fluid transmission, the two ends of the hose 8 are both wound around the adjusting mechanism 9 and are respectively connected with external pipelines from the two pipe orifices 10, one end of the hose 8 is an inflow end, namely one end of the liquid inflow hose 8, the other end of the hose 8 is an outflow end, namely one end of the liquid outflow hose 8, and the two pipe orifices 10 are arranged on the left side wall of the pump body 1.

Specifically, the adjusting mechanism 9 includes two bases 901 (corresponding to the two pipe orifices 10), guide posts 902 are fixedly connected to the upper sides of the two bases 901, the guide posts 902 hook the hose 8, the bases 901 slide, so that the hose 8 can be adjusted to be tightened to a certain extent, the hose 8 is wound on the side walls of the two guide posts 902, sliders 903 are fixedly connected to the lower sides of the two bases 901, the sliders 903 are slidably connected to the inside of the sliding grooves 904, the sliders 903 slide inside the sliding grooves 904 to guide the sliding of the bases 901, so as to limit the sliding track of the bases 901, so that the hose 8 can be adjusted more conveniently, the sliding grooves 904 are opened on the side walls of the cavity 2, screws 905 are fixedly connected to the side walls of the two bases 901, the screws 905 penetrate through the side walls of the cavity 2 and extend to the outside of the pump body 1 and are engaged and sleeved with the butterfly nuts 906, by rotating the butterfly nuts, the screw 905 is slid so that the screw 905 slides with the base 901, and the guide post 902 stretches the hose 8.

Particularly, a plurality of butt joint pieces 13 of right side fixedly connected with of upper cover 102, butt joint piece 13 activity joint is in the inside of joint groove 14, joint groove 14 is opened on the right side wall of casing 101, the left side of upper cover 102 is through the left side fixed connection of turn-button 15 with casing 101, and the upper end of turn-button 15 is anti-skidding line, is convenient for hold with the hand and rotates turn-button 15, and butt joint piece 13 joint is fixed with the opposite side of upper cover 102 with turn-button 15 behind the inside of joint groove 14, makes the ability quick fixed upper cover 102, does benefit to the dismantlement of upper cover 102 again.

Specifically, a clamping block 11 is movably clamped inside the pipe orifice 10, a convex block 18 is arranged on the side wall of the clamping block 11, a groove 17 matched with the convex block 18 is arranged at the pipe orifice 10, when the clamping block 11 is clamped inside the pipe orifice 10, the convex block 18 is clamped inside the groove 17, at the moment, the clamping block 11 can only be taken out in an upward sliding manner, after the upper cover 102 is fixed on the shell 101, the clamping block 11 is fixed at the pipe orifice 10, a through pipe 12 is movably inserted inside the clamping block 11, the through pipe 12 is made of a plastic material with high hardness, the inner end of the through pipe 12 is inserted into the end portion of the hose 8, the outer end of the through pipe 12 is movably connected with an external pipeline, the through pipe 12 plays a role in communicating two ends of the hose 8 with the external pipeline, the pipeline 12 is inserted into the clamping block 11 for fixing, and barbs (as shown in fig. 8) are arranged at two, which in turn makes the hose 8 and the outer pipe more firmly inserted behind the end of the pipe 12.

Specifically, the latch 11 is formed by clamping an upper latch 1101 and a lower latch 1102, two rings of limiting grooves 1103 are formed in the upper latch 1101 and the lower latch 1102, one end of the hose 8, which is close to the latch 11, is an expanded end, and a collar 16 corresponding to the limiting grooves 1103 is arranged on the end, which is close to the latch 11, the collar 16 on the hose 8 is made of rigid plastic and is integrally formed with the hose 8, so that the stable clamping effect is achieved, the through pipe 12 is also provided with the collar 16 corresponding to the limiting grooves 1103, the through pipe 12 is prevented from moving inside and outside after the latch 1101 and the lower latch 1102 are clamped, the stability is improved, in addition, in order to simplify the installation process, no other tool is needed, the lower latch 1102 is provided with a positioning hole 1104, the upper latch 1101 is provided with a corresponding positioning rod (not shown in the drawing), and the positioning rod is inserted into the positioning hole 1104 so that the shape of the latch 11 is kept stable.

Specifically, the driving mechanism 6 includes a case 601, the case 601 is fixedly connected to the lower side surface of the pump body 1, the inside of the case 601 is fixedly connected with a motor 602, the motor 602 is a stepping motor, the rotating speed of the output shaft of the motor 602 can be changed, the output shaft of the motor 602 is connected with the rotating shaft 3 through a gear mechanism 603, and the gear mechanism 603 is a device in which gears and gears are engaged with each other and transmit, as shown in fig. 6, two gears are engaged with each other in the drawing, and the central shaft of one gear is sleeved on the output shaft of the motor 602 through a spline, and the central shaft of the other gear is fixedly connected with the lower end of the rotating shaft 3, so when the motor 602 is started, the output shaft of the motor 602 rotates and drives the two gears to rotate, and finally the rotating shaft.

The working principle is as follows: when the device is used, firstly, the power supply is switched on, the output shaft of the motor 602 rotates and drives the rotating shaft 3 to rotate through the gear mechanism 603, so that the rotating shaft 3 drives the bracket 4 to rotate, and at the moment, each roller 5 and the arc-shaped wall 7 alternately flatten the hose 8, and the process is as follows: when the first roller 5 rolls a section of the hose 8 on the arc-shaped wall 7, the first roller 5 pushes the liquid in the pressed section of the hose 8 forward, so as to drive the liquid in the whole hose 8 to flow, when the first roller 5 does not squeeze the hose 8, the second roller 5 starts to squeeze the hose 8, the process that the first roller 5 squeezes the hose 8 is repeated, the flowing auxiliary force is applied to the liquid in the hose 8 again, and the process is repeated, so that the liquid in the hose 8 continuously flows; when the flow rate in the hose 8 is adjusted, the rotating speed of the motor 602 can be adjusted, and then the rotating speed of the bracket 4 with the rollers 5 is changed, so that the speed of alternately squeezing the hose 8 between the two rollers 5 is increased, and the flowing speed of the liquid in the hose 8 is changed in a manner of changing the pulsation degree of the hose 8; when the hose 8 needs to be adjusted (for example, when the hose is newly installed and the length needs to be corrected, or after the hose is used for a period of time, the length slightly changes), the butterfly nut 906 is rotated to drive the screw 905 to slide, so that the screw 905 drives the base 901 to slide, the guide post 902 can stretch the hose 8, the fit degree between the hose 8 and the roller 5 is adjusted, and over-loosening or over-tightening is prevented.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. An extracorporeal novel blood-assisted peristaltic pump, comprising a pump body (1), wherein the pump body (1) comprises a casing (101) and an upper cover (102), and is characterized in that: the utility model discloses a pump body, including pump body (1), the inside of pump body (1) is opened there are cavity (2), the internal rotation of cavity (2) is connected with pivot (3), the lower extreme of pivot (3) and the output shaft of actuating mechanism (6), actuating mechanism (6) drive pivot (3) are rotatory, support (4) have been cup jointed in the activity on the lateral wall of pivot (3), it is connected with a plurality of gyro wheels (5) to rotate on support (4), the left side of cavity (2) is equipped with arc wall (7), be equipped with hose (8) between arc wall (7) and gyro wheel (5), adjustment mechanism (9) are all walked around and are located and outside pipe connection from two mouths of pipe (10) respectively to the both ends of hose (8), and two mouths of pipe (10) are opened on the left side wall of the pump body (1).

2. The novel extracorporeal blood-assisted peristaltic pump of claim 1, wherein: the adjusting mechanism (9) comprises two bases (901), guide pillars (902) are fixedly connected to the upper sides of the two bases (901), the hose (8) is wound on the side walls of the two guide pillars (902), sliders (903) are fixedly connected to the lower sides of the two bases (901), the sliders (903) are slidably connected to the inside of the sliding groove (904), the sliding groove (904) is formed in the side wall of the cavity (2), threaded rods (905) are fixedly connected to the side walls of the two bases (901), and the threaded rods (905) penetrate through the side wall of the cavity (2), extend to the outside of the pump body (1) and are meshed with butterfly nuts (906).

3. The novel extracorporeal blood-assisted peristaltic pump of claim 1, wherein: the right side fixedly connected with of upper cover (102) a plurality of butt joint piece (13), butt joint piece (13) activity joint is in the inside of joint groove (14), joint groove (14) are opened on the right side wall of casing (101), the left side of upper cover (102) is through the left side fixed connection of knob (15) and casing (101).

4. The novel extracorporeal blood-assisted peristaltic pump of claim 1, wherein: the inner part of the pipe orifice (10) is movably clamped with a clamping block (11), the inner part of the clamping block (11) is movably inserted with a through pipe (12), the inner end of the through pipe (12) is inserted at the end part of the hose (8), and the outer end of the through pipe (12) is movably connected with an external pipeline.

5. The novel extracorporeal blood-assisted peristaltic pump of claim 4, wherein: the fixture block (11) comprises an upper fixture block (1101) and a lower fixture block (1102), two rings of limiting grooves (1103) are formed in the upper fixture block (1101) and the lower fixture block (1102), a clamping ring (16) corresponding to the limiting grooves (1103) is arranged on one end, close to the fixture block (11), of the hose (8) and is an expanded end, and the clamping ring (16) corresponding to the limiting grooves (1103) is also arranged on the through pipe (12).

6. The novel extracorporeal blood-assisted peristaltic pump of claim 5, wherein: the lower clamping block (1102) is provided with a positioning hole (1104), and the upper clamping block (1101) is provided with a corresponding positioning rod.

7. The novel extracorporeal blood-assisted peristaltic pump of claim 1, wherein: actuating mechanism (6) include quick-witted case (601), quick-witted case (601) fixed connection is on the downside of the pump body (1), the inside fixedly connected with motor (602) of quick-witted case (601), the output shaft of motor (602) passes through gear mechanism (603) and is connected with pivot (3).