CN213724084U

CN213724084U - Chain transmission transfer pump

Info

Publication number: CN213724084U
Application number: CN202020951589.4U
Authority: CN
Inventors: 王文娟; 刘晓红; 李娜
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-05-29
Filing date: 2020-05-29
Publication date: 2021-07-20
Anticipated expiration: 2030-05-29

Abstract

The utility model relates to the field of infusion pumps, and discloses a chain transmission infusion pump, which comprises a driving sprocket, an infusion catheter and a motor; one side of the driving chain wheel is rotatably connected with a driven chain wheel through a chain, and the chain comprises an outer chain plate, an inner chain plate, an edge shaft, a bearing, a roller and a pin shaft; the roller is installed on the pin shaft through a bearing, the side shaft is provided with two groups of rollers which are connected to the pin shaft in a threaded mode, the driving chain wheel is meshed with the side shaft, a group of transverse infusion catheters are arranged on the same rear side face of the driving chain wheel and the driven chain wheel, an infusion catheter pressing plate in a rectangular structure is arranged on the outer side of each infusion catheter, the infusion catheter pressing plate is matched with the roller for use, the infusion catheter pressing plate is tightly pressed on a chain of the linear motion part of the chain, and the roller rolls on the surface of the infusion catheter pressing plate. The utility model has the advantages that: simple structure, good infusion flow linearity and high efficiency, and is suitable for being applied to miniaturized portable equipment.

Description

Chain transmission transfer pump

Technical Field

The utility model relates to an transfer pump field specifically is a chain drive transfer pump.

Background

The pump device is the "heart" of a medical infusion pump and is the source of power for delivering fluid. Medical infusion pumps generally employ a finger-like peristaltic pump as a power source. The finger-shaped peristaltic pump is provided with a cam shaft, a plurality of cams are arranged on the cam shaft, the motion laws of the cams are different by certain angles, and each cam is connected with a finger-shaped sliding block. When the device works, the stepping motor drives the cam shaft to rotate, so that the sliding block reciprocates up and down according to a certain sequence and a motion rule, and the venous transfusion catheter is sequentially extruded like waves, so that liquid in the venous transfusion catheter directionally flows at a certain speed. When the number of the 'fingers' exceeds 8 (generally 12), the linearity of the pump is good, and the pump is not easy to generate pulsation during transfusion.

However, the existing finger-shaped peristaltic pump is relatively large in volume, and the infusion pump adopting the finger-shaped peristaltic pump is almost all table-type, so that the finger-shaped peristaltic pump is extremely inconvenient to transfer and carry.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a chain drive transfer pump 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: a chain transmission infusion pump comprises a driving chain wheel, an infusion catheter and a motor; the downside output of motor rotates and is connected with vertical rotation axis, and the rotation axis is terminal to be connected with drive sprocket's axis of rotation through sleeve fixed connection, and one side of drive sprocket rotates through the chain and is connected with driven sprocket, and it is rotatory through starter motor drive sprocket, then drives driven sprocket rotary motion through the rotation linkage effect of chain. The chain comprises an outer chain plate, an inner chain plate, a side shaft, a bearing, a roller and a pin shaft; the roller is installed on the pin shaft through a bearing, the side shafts are provided with two groups and are connected to the pin shaft in a threaded mode, the driving chain wheel is meshed with the side shafts, and when the driving chain wheel rotates, the motion track of the chain is formed into two semicircles and two straight lines. The infusion device is characterized in that a group of transverse infusion catheters are arranged on the same rear side face of the driving chain wheel and the driven chain wheel, infusion catheter pressing plates in a rectangular structure are arranged on the outer sides of the infusion catheters, the infusion catheter pressing plates are matched with rollers for use, the infusion catheter pressing plates are tightly pressed on the chains of the linear motion parts of the chains, and the rollers roll on the surfaces of the infusion catheter pressing plates, so that liquid in the infusion catheters is extruded to flow at a given speed, and the function of the infusion device is realized.

As a further aspect of the present invention: and the rotating shafts of the driving chain wheel and the driven chain wheel are arranged on the bracket through a bracket bearing.

As a further aspect of the present invention: the left end and the right end of the support are provided with clamping rings for fixing and limiting the connection state between the rotating shaft and the support.

As a further aspect of the present invention: the inner side of the support is fixedly provided with a support baffle, two ends of the support baffle are sleeved on the driving chain wheel and the driven chain wheel, and the support baffle is arranged to maintain the motion track of the straight section of the chain not to be deformed due to the extrusion of the infusion catheter when the chain moves.

As a further aspect of the present invention: compared with the prior art, the beneficial effects of the utility model are that: the chain type infusion pump disclosed by the invention has the advantages that the motor drives the chain wheel and the chain to rotate through the chain type transmission principle, the linear motion of the chain and the roller is locally generated, the roller extrudes the liquid in the infusion catheter to flow in the linear motion section, the function of the infusion pump is realized, and the system has the characteristics of simple structure, good infusion flow linearity and high efficiency, and is suitable for being applied to miniaturized portable equipment.

Drawings

Fig. 1 is a schematic perspective view of a chain-drive infusion pump.

Fig. 2 is a schematic top view of a chain-drive infusion pump.

Fig. 3 is a structure diagram of a driving sprocket and a driven sprocket in a chain-type transmission infusion pump.

Fig. 4 is a chain structure diagram in a chain-driven infusion pump.

FIG. 5 is a diagram showing the positional relationship between a driving sprocket, a driven sprocket and a chain in a chain-type transmission infusion pump.

Fig. 6 is a connection structure diagram of a bracket, a driving chain wheel and a driven chain wheel in a chain transmission infusion pump.

Wherein: 1 driving chain wheel, 2 driven chain wheel, 3 chain, 31 outer chain plate, 32 inner chain plate, 33 side shaft, 34 bearing, 35 roller, 36 pin shaft, 4 transfusion conduit pressing plate, 41 transfusion conduit, 5 motor, 6 sleeve, 7 bracket, 71 bracket bearing and 72 clamping ring.

Detailed Description

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

Example one

Referring to fig. 1-3, a chain-drive infusion pump comprises a driving sprocket 1, an infusion tube 41, a motor 5; the downside output of motor 5 rotates and is connected with vertical rotation axis, and the rotation axis is terminal through 6 fixed connection of sleeve to the axis of rotation of drive sprocket 1, and one side of drive sprocket 1 is rotated through 3 chains and is connected with driven sprocket 2, and it is rotatory through 5 drive sprockets 1 of starter motor, then drives 2 rotary motion of driven sprocket through the rotation linkage of 3 chains. The chain 3 comprises an outer chain plate 31, an inner chain plate 32, a side shaft 33, a bearing 34, a roller 35 and a pin shaft 36; the rollers 35 are mounted on the pin shaft 36 through the bearings 34, the side shafts 33 are provided with two groups and are connected to the pin shaft 36 in a threaded manner, the driving sprocket 1 and the side shafts 33 are meshed with each other, and when the driving sprocket 1 rotates, the motion track of the chain 3 is formed into two semicircles and two straight lines. A group of transverse infusion catheters 41 are arranged on the same rear side face of the driving chain wheel 1 and the driven chain wheel 2, infusion catheter pressing plates 4 in a rectangular structure are arranged on the outer sides of the infusion catheters 41, the infusion catheter pressing plates 4 are matched with the rollers 35 for use, the infusion catheter pressing plates 4 are tightly pressed on the chains of the linear motion parts of the chains 3, and the rollers 35 roll on the surfaces of the infusion catheter pressing plates 4, so that liquid in the infusion catheters 41 is extruded to flow at a given speed, and the function of an infusion device is realized.

The utility model discloses a theory of operation is: the driving chain wheel 1 is driven to rotate through the starting motor 5, then the driven chain wheel 2 is driven to rotate through the linkage effect of the chain 3, and then the rollers arranged in the middle of the driving chain wheel 1 and the driven chain wheel 2 are driven to roll on the surface of the infusion catheter pressure plate 4 at the same time, so that the liquid input into the infusion catheter 41 flows at a given speed in an extruding mode, and the infusion device is used for achieving the effect.

Example two

In the first embodiment, the rotating shafts of the driving sprocket 1 and the driven sprocket 2 are mounted on the bracket 7 through the bracket bearing 71, and the left and right ends of the bracket 7 are provided with the snap rings 72 for fixing and limiting the connection state between the rotating shafts and the bracket 7. And a bracket baffle 73 with two ends sleeved on the driving sprocket 1 and the driven sprocket 2 is fixedly arranged on the inner side of the bracket 7, and the bracket baffle 73 is used for maintaining the motion track of the straight section of the chain 3 not to be deformed due to the extrusion of the infusion catheter 41 when the chain 3 moves.

Although the preferred embodiments of the present patent have been described in detail, the present patent is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present patent within the knowledge of those skilled in the art.

Claims

1. A chain transmission infusion pump comprises a driving chain wheel (1), an infusion catheter (41) and a motor (5); the output end of the lower side of the motor (5) is rotatably connected with a vertical rotating shaft, and the automatic transmission is characterized in that the tail end of the rotating shaft is fixedly connected to a rotating shaft of the driving chain wheel (1) through a sleeve (6), one side of the driving chain wheel (1) is rotatably connected with a driven chain wheel (2) through a chain (3), and the chain (3) comprises an outer chain plate (31), an inner chain plate (32), a side shaft (33), a bearing (34), a roller (35) and a pin shaft (36); the roller (35) is installed on the pin shaft (36) through a bearing (34), two groups of side shafts (33) are arranged and are connected to the pin shaft (36) in a threaded mode, the driving chain wheel (1) is meshed with the side shafts (33), a group of transverse infusion catheters (41) are arranged on the same rear side face of the driving chain wheel (1) and the driven chain wheel (2), infusion catheter pressing plates (4) in rectangular structures are arranged on the outer sides of the infusion catheters (41), the infusion catheter pressing plates (4) are matched with the roller (35) for use, the infusion catheter pressing plates (4) are tightly pressed on a linear motion part chain of the chain (3), and the roller (35) rolls on the surface of the infusion catheter pressing plates (4).

2. A chain-drive infusion pump according to claim 1, wherein the path of motion of the chain (3) is two semi-circles and two straight lines.

3. A chain drive infusion pump according to claim 2, wherein the axes of rotation of the drive sprocket (1) and the driven sprocket (2) are mounted on a support (7) by means of support bearings (71).

4. A chain-drive infusion pump according to claim 3, wherein the holder (7) is provided with snap rings (72) at both left and right ends.

5. The chain-drive infusion pump according to claim 3, wherein a bracket baffle (73) is fixedly arranged on the inner side of the bracket (7) and the two ends of the bracket baffle are sleeved on the driving chain wheel (1) and the driven chain wheel (2).