JP4165528B2 - Fluid transport device and fluid transporter - Google Patents

Description

  The present invention relates to a fluid transportation device and a fluid transportation device including the fluid transportation device.

  Conventionally, a plurality of rollers provided on concentric circles on the periphery of the rotor and a tube that flows fluid between the tube receiving members are mounted, and by rotating the rotor, the roller sequentially presses the tube to draw the fluid. There is known a peristaltic fluid transport device that causes fluid flow (see, for example, Patent Document 1).

  Also, as in the above-mentioned Patent Document 1, a tube that allows fluid to flow between a plurality of rollers and two backings provided at the peripheral edge of the rotor is mounted, and the rollers are sequentially tubed by rotating the rotor. Also known is a peristaltic fluid transport device that presses the fluid to flow the fluid, and this fluid transport device is a peristaltic pump device in which a motor module for rotating the rotor is configured to overlap the roller unit. It is known (see, for example, Patent Document 2).

US Pat. No. 3,737,251 (pages 2, 3 and FIG. 2) Japanese Patent No. 3177742 (pages 5, 6 and 1, 2)

  In both Patent Document 1 and Patent Document 2, since the rotor rotates while directly pressing the tube with a roller and transports the fluid, the tube may be stretched in the rotation direction of the rotor. Since the size of the fluid flow portion (inner diameter of the tube) changes with respect to the initial size, the flow rate of the fluid also changes, and it is considered that it is difficult to transport a stable flow rate.

  In both Patent Document 1 and Patent Document 2, it is considered that it is difficult to reduce the driving torque of the roller because a plurality of rollers constantly press or block the tube, and sufficient driving torque is obtained. Therefore, it is predicted that the drive source must be enlarged.

  In Patent Document 1, the housing includes a fluid transport device, a drive control circuit, a display unit, and an operation unit, which makes it difficult to reduce the size.

Further, in Patent Document 2, since the motor module is configured to overlap with the roller unit, it is difficult to reduce the thickness, and the tube is pressed against the backing and closed, so the tube is used as the pump module. There is also a problem that it is difficult to wear.
Furthermore, the fluid discharge amount is set within a preset range such as the quartz frequency, the number of divider stages, the reduction ratio of the gear mechanism, and it is difficult to easily change the amount.

  An object of the present invention is to provide a thin and small fluid transport device capable of maintaining a stable flow rate and a fluid transport device including the fluid transport device.

The fluid transport device according to the present invention includes an elastic tube, a tube frame having a tube guide wall for mounting the tube in an arc shape, and an arc center and a rotation center of the tube guide wall disposed inside the tube. Are mounted between the rotating plate, the tube and the rotating plate, which are radially arranged from the rotation center of the rotating plate, and the upper surface of the rotating plate. A rotary pressing plate provided with a pressing portion to be provided, wherein the pressing shaft has a hemispherical pressing portion whose one end abuts on the rotating pressing plate, and the other end which The rotary pressing plate sequentially presses the pressing shaft to flow the fluid from the fluid inflow side to the outflow side.
Here, the fluid includes, for example, a gas in addition to a liquid such as water, oils, and chemicals.

  According to the present invention, since the arc center of the tube frame, the rotation center of the rotating plate, and the radial centers of the plurality of pressing shafts are the same, the pressing shaft presses the tube in a substantially perpendicular direction, so that the tube is stretched. As a result, the inner diameter of the tube (fluid flow portion) is not deformed, so that a stable flow rate can be obtained. This is particularly effective for a small fluid transport device having a small diameter and made of a soft material.

  In addition, since the end of the pressing shaft that is in contact with the rotating pressing plate is rounded into a hemisphere, the frictional resistance with the rotating pressing plate can be reduced, and the rotational torque can be reduced in the fluid transport device. It is effective for miniaturization.

  Since the pressing shafts are arranged radially, the interval at which the tube is pressed is wider than the radial center portion, and the interval at which the tube is pressed is also increased. However, in the present invention, since the pressing portion that presses the tube is formed in a bowl shape, the interval for pressing the tube is narrowed, and the fluid flow efficiency can be increased in combination with the wider pressing surface. .

  Moreover, it is preferable that the rotary pressing plate is formed with a plurality of outer peripheral arc portions that press the pressing shaft to close the tube, and a recess that opens the tube between adjacent outer peripheral arc portions. .

  In this way, since the rotation pressing plate is rotated to press the pressing shaft and when it is released, the driving torque applied to the rotating pressing plate can be reduced when the rotation pressing plate is opened. The drive source (pump drive unit to be described later) can be reduced in size, and the fluid transportation device can also be reduced in size.

  Further, when operating this fluid transport device, since at least one pressing shaft closes the tube, even when the operation is stopped halfway, one part of the tube is closed. The outflow of fluid to the outside can be prevented. This can increase safety when the fluid is a chemical or the like that should be considered safe.

  Moreover, it is preferable that the said rotation press plate is detachable to the said rotation plate, and is comprised so that the number of these outer periphery circular arc parts can be changed suitably.

  According to such a structure, since the rotary pressing plate can be attached to and detached from the rotating plate, a plurality of rotary pressing plates having a combination of the number and shape of the outer peripheral arc portions are prepared, and the rotary pressing plate corresponding to a desired fluid flow rate is prepared. By replacing, the flow rate of fluid per unit time can be easily changed. Although the details will be described in an embodiment described later, the rotating plate is connected to the pump drive unit to transmit the driving force, so the rotating plate cannot be easily changed, but by changing the rotating pressing plate There is an effect that the flow rate can be easily changed.

  The rotary pressing plate may be divided into a plurality of rotary pressing plates having an outer peripheral arc portion that closes the tube, and a space for opening the tube is provided between the divided rotary pressing plates that are adjacent to each other. preferable.

  By doing in this way, the flow volume of the fluid can be easily changed by the combination of a plurality of rotary pressing plates. In addition, since a space for opening the tube is provided between the rotary pressing plates, the driving torque applied to the rotary pressing plate can be reduced as described above, and the size can be reduced.

Furthermore, it is desirable that the rotating plate and the rotating pressing plate are integrally formed.
With such a configuration, the structure of the fluid transportation device can be further simplified and the cost can be reduced by integrally configuring the rotating plate and the rotating pressing plate.

Further, the tube is mounted between a ring-shaped tube frame having a tube guide wall and a ring-shaped slide frame through which the pressing shaft provided inside the tube frame is inserted, and is formed on the slide frame. It is desirable that the position in the cross-sectional direction is regulated by a tube presser disposed between each of the plurality of pressing shafts.

  In this way, since the tube presser is formed in a comb-tooth shape between the pressing shafts, the tube presser can be attached to the fluid transport device while visually observing the tube, so that the assemblability can be improved. Further, the tube can be prevented from being lifted.

  The fluid transport device of the present invention includes the above-described peristaltic fluid transport device that transports a fluid by pressing an elastic tube, and a fluid storage container that stores a fluid. The fluid container is communicated with the tube.

  According to this invention, since the fluid transportation device having the above-described structure is employed, the fluid transportation device and the fluid storage container are in communication with each other because the fluid transportation device and the fluid storage container are communicated with each other. Therefore, it is easy to handle and the fluid transport device can be used repeatedly, so that there is an economic effect.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 to 3 show a fluid transport device and a fluid transport device according to Embodiment 1 of the present invention, FIGS. 4 to 6 show Embodiment 2 and FIG. 7 shows Embodiment 3. FIG.
(Embodiment 1)

1 to 3 show a fluid transport device and a fluid transport device according to a first embodiment.
FIG. 1 is a perspective view showing the external appearance of the fluid transporter of the present embodiment. In FIG. 1, the fluid transporter 10 includes a fluid transporting device 20 that transports fluid by a peristaltic motion and a pack-like fluid storage container 90 that stores the fluid. The fluid transport device 20 and the fluid storage container 90 are communicated with each other by a tube 80.

  The fluid storage container 90 is made of a synthetic resin having flexibility, and is formed of a silicon-based resin in the present embodiment. A tube holding portion 92 is provided at one end of the fluid storage container 90, and the tube 80 is hermetically fixed so that the fluid does not leak by means such as pressure bonding, heat welding, or adhesion.

  The fluid used in the present invention includes gas in addition to fluid liquid such as water, saline, chemicals, oils, aromatic liquids, and inks.

  One end of the tube 80 communicates with the inside of the fluid storage container 90, passes through the fluid transport apparatus 20, extends to the outside of the fluid transport apparatus 20, and stores the fluid stored in the fluid storage container 90. It is transported to the outside by the fluid transport device 20.

In the fluid transport device 20, a lower lid 82, a pump unit frame 31, a tube frame 32, and an upper lid 81 are sequentially stacked, and these are integrated by a fixing screw 95 (the figure shows an upper lid fixing screw). A rotary extrusion mechanism for transporting fluid is stored in the fluid transport device 20.
The lower lid 82, the pump unit frame 31, the tube frame 32, the upper lid 81, and the fluid container 90 are materials having excellent biocompatibility, for example, polysulfone, urethane, when the fluid transporter 10 is attached to a living body. It is preferable to employ a synthetic resin such as

Next, a mechanism for transporting fluid will be described with reference to the drawings.
FIG. 2 is a plan view showing a mechanism for transporting the fluid of the fluid transport device 20 according to the present embodiment, and FIG. 3 is a cross-sectional view showing the AA cross section of FIG. FIG. 2 shows a state in which the upper lid 81 is seen through in order to make the explanation easy to understand. 2 and 3, the fluid transport device 20 has a peristaltic motion on the tube 80 as a basic configuration, and a pump unit 30 as a rotary extrusion mechanism for transporting fluid, and a pump drive unit 60 for driving the pump unit 30. And is composed of. The pump unit 30 and the pump drive unit 60 are configured to overlap in the cross-sectional direction (see FIG. 3).

  First, the structure and drive of the pump drive unit 60 will be described. In FIG. 3, the pump drive unit 60 includes a plate-like first machine casing 61, a second machine casing 62, and a third machine casing 63, and pumps driving force into the space between the machine casings. A motor, a transmission wheel train, and a drive circuit for drive control (both not shown) provided to the unit 30 are provided.

  As the motor, in this embodiment, a step motor employed in a quartz watch or the like is employed, and the coil block 70 is disposed outside the pump unit 30. Although not shown, a stator magnetically joined to the coil block 70 and a rotor are provided inside the stator, and are rotated based on a signal from a drive circuit (not shown). A predetermined drive pattern is stored in advance in the drive circuit, and the step motor is driven by a signal based on this drive pattern.

  Although not shown, the drive circuit and the battery as the drive source are arranged in a space formed by the first machine casing 61 and the lower lid 82, and the battery intersects the coil block 70 and a transmission wheel described later. It is placed in a position that does not. Further, as described above, since the lower lid 82 is screwed and fixed by the fixing screw 96, the battery can be easily replaced if the lower lid 82 is removed.

  The rotation of the rotor is reduced to a predetermined reduction ratio by a plurality of transmission wheels (not shown) and transmitted to the transmission first wheel 71. The transmission first wheel 71 is pivotally supported between a bearing 77 provided on the second machine casing 62 and a transmission second wheel axle 72 planted on the third machine casing 63. The rotation of the transmission first wheel 71 passes through a transmission third wheel 73 (not shown), passes through a transmission fourth wheel 74 and a transmission fifth wheel 75, and is located at the center of the pump unit 30. Is transmitted to.

  The transmission fourth wheel & pinion 74 is loosely fitted to the central shaft portion of the transmission second wheel shaft 72, and the transmission fifth wheel & pinion 75 is loosely fitted to a support shaft 61 </ b> A provided in the first machine casing 61.

  In the pump drive unit 60, the first machine frame 61 is screwed and fixed inside the ring-shaped pump unit frame 31 by a fixing screw (not shown), and the second machine frame 62 and the third machine frame 63 are respectively set in predetermined ways. The first machine frame 61 is screwed and fixed with a fixing screw (not shown) with a gap. In this way, the pump drive unit 60 is unitized except for the transmission fifth wheel & pinion 75. A pump unit 30 is mounted on the top of the pump drive unit 60.

  Next, the structure of the pump unit 30 will be described. 2 and 3, the pump unit 30 includes, as a basic configuration, a rotary plate wheel 56 that is rotated by the rotational force transmitted from the pump drive unit 60, and a rotary plate 76 that rotates integrally with the rotary plate wheel 56. Four rollers 50 to 53 provided on the upper surface of the peripheral portion of the rotating plate 76, eight pressing shafts 40 to 47 provided radially from the center of rotation of the rotating plate 76, and a tube 80 through which fluid flows. Is provided.

  The rotating plate 76 is made of a disk-shaped plate member, and the rotating plate wheel 56 is fixed to the center. A rotational force is transmitted from the transmission fifth wheel 75 to the rotating wheel 56, and the rotating plate 76 rotates around the transmission second wheel shaft 72 as a rotation center. A central hole of the rotary wheel 56 is inserted into the transmission second wheel shaft 72, and the rotation wheel wheel 56 is pivotally supported by the transmission second wheel shaft 72 and a bearing 57 provided on the upper cover 81.

  A roller support shaft 55 is planted on the outer peripheral portion of the rotating plate 76. Four roller support shafts 55 are provided at equal distances (on concentric circles) from the rotation center of the rotating plate 76 and at equal intervals in the plane direction (90 degree intervals). In addition, since the structure which concerns on the roller spindle 55 and the rollers 50-53 is the same structure, four sets are illustrated and demonstrated. The roller support shaft 55 is press-fitted from below the rotating plate 76, and the roller shaft 54 is press-fitted to the roller support shaft 55 from the opposite side across the rotating plate 76.

  Further, the roller 50 is inserted into the roller shaft 54 and is locked by the C ring 58. The roller 50 has a loose-fitting relationship with the roller shaft 54 and can freely rotate. With the same structure, the rollers 50 to 53 are also arranged equidistant from the rotation center of the rotating plate 76. A ring-shaped slide frame 34 is provided on the outer periphery of the rotating plate 76 provided with these rollers 50 to 53.

  The center of the slide frame 34 also coincides with the center of rotation of the rotary plate 76, the position is accurately regulated by a positioning member (not shown), and is screwed and fixed to the first machine frame 61 by a fixing screw 97 (FIG. 3). ,reference). The slide frame 34 has eight holes that penetrate radially from the center to the outside, and the pressing shafts 40 to 47 are inserted into the holes, respectively. The pressing shafts 40 to 47 are set to dimensions that can move in the axial direction. Here, the angle formed by the axial center of the pressing shaft 40 and the axial center of the pressing shaft 47 is set to 90 degrees or more.

  Since the pressing shafts 40 to 47 have the same shape, the pressing shaft 43 will be described as an example (see FIG. 3). The pressing shaft 43 is formed with a hook-shaped pressing portion 43A at one end, and a pressing portion 43B rounded into a hemisphere at the other end. The pressing portion 43B is pressed by the roller 50, and the pressing portion 43A presses the tube 80 against the tube guide wall 32B, thereby compressing and flowing the fluid. When the pressing shaft 43 does not contact the rollers 50 to 53, the tube 80 is not pressed (indicated by a two-dot chain line in FIG. 3).

  A ring-shaped tube frame 32 is further provided on the outer periphery of the slide frame 34. As with the slide frame 34, the center of the tube frame 32 coincides with the rotation center of the rotating plate 76. A stepped tube mounting portion 32A for mounting the tube 80 is formed on the inner peripheral portion of the tube frame 32, and the planar direction of the tube 80 is between the tube mounting portion 32A and the pressing portion 43A of the pressing shaft 43. The position of is regulated. In a range where the pressing shafts 40 to 47 do not exist, the tube 80 is mounted in the form shown in FIG. 2 by a tube guide groove (not shown) provided in the slide frame 34 and the tube frame 32.

  The pressing shafts 40 to 47 extend radially from the rotation center of the rotating plate 76, and the tube guide wall 32 </ b> B against which the tube 80 is pressed is also formed concentrically with the rotating center of the rotating plate 76. Are pressed by the pressing shafts 40 to 47 in a substantially perpendicular direction.

  The slide frame 34 is formed with a tube presser 35 partially protruding in the upper surface direction of the tube 80 so that the tube 80 does not float up. A plurality of the tube pressers 35 are disposed between the pressing shafts 40 to 47 that press the tube 80 (in FIG. 2, three tube pressers 35 are provided.

  The fluid transport device 20 according to the present embodiment has the above-described pump drive unit 60 and the pump unit 30 overlapped, and the tube frame 32 and the upper lid 81 are inserted through the fixed shaft 33 that is pivotally supported by the pump unit frame to be fixed. Screwed and fixed with a screw 95. Similarly, the lower lid 82 is integrally formed by being screwed and fixed by a fixing screw 96.

  Next, the fluid flow action in the present embodiment will be described with reference to FIG. The rotary plate 76 is rotated by the pump drive unit 60 in the fluid flow direction (the arrow direction in the drawing), that is, in the present embodiment, in the counterclockwise direction. The roller 50 will be described as an example. Before the outermost periphery of the roller 50 intersects the pressing shaft 40, the pressing shaft 40 is in an open state. The rotating plate 76 rotates, the pressing shaft 40 moves in the direction of the tube 80 from the position where the outermost periphery of the roller 50 (indicated by the locus C in the drawing) contacts the end of the pressing shaft 40, and the tube 80 starts to be pressed. To do.

  Until the roller 50 comes into contact with the pressing shaft 40 and starts pressing, as described above, the angle between the pressing shafts 40 and 47 is set to 90 degrees or more, so at least the pressing shaft 47 is pressed by the roller 51. The tube 80 is closed.

  Further, when the rotating plate 76 rotates, the roller 50 sequentially presses against the pressing shafts 41, 42, and 43. At this time, when the rotation center of the rotating plate 76, the rotation center of the roller, and the axial center line of the pressing shaft become a straight line, the pressing amount becomes maximum, and then the roller gradually moves away from the pressing shaft, and the tube 80 is released from the pressing of the pressing shaft. In this way, the motion of sequentially pressing the tube 80 is called a peristaltic motion, and the fluid is transported by squeezing the tube 80 by this peristaltic motion. A device that transports fluid using such a peristaltic motion is called a peristaltic fluid transport device.

  Thus, as the rotating plate 76 rotates, the rollers 50 to 53 press the pressing shafts 40 to 47 one after another. As described above, the angle between the pressing shafts 40 and 47 is 90 degrees or more. For this reason, at least one of the pressing shafts closes the tube 80.

  Further, when the rollers 50 to 53 press the pressing shafts 40 to 47, the rollers 50 to 53 are rotated by frictional force in the direction opposite to the rotation direction of the rotating plate 76, that is, the clockwise direction. The frictional force is reduced.

  In the first embodiment described above, a structure including four rollers and eight pressing shafts is illustrated, but the number of rollers and pressing shafts can be arbitrarily selected and provided.

  Therefore, according to the first embodiment described above, the pressing shafts 40 to 47 press the tube 80 in a substantially right-angle direction, so that the tube 80 is not stretched, and thereby the inner diameter of the tube 80 (fluid flow portion). Since it does not change, a stable flow rate can be obtained.

  In addition, since the pressing shafts 40 to 47 are configured to be pressed by the rollers 50 to 53, the flow rate can be freely adjusted by arbitrarily setting the number and the strokes of the pressing shafts, and the fluid transportation device 20 having a desired flow rate. And a fluid transporter can be provided easily.

  Further, when the rollers 50 to 53 press the pressing shafts 40 to 47, the rollers 50 to 53 rotate in the direction opposite to the rotation direction of the rotating plate 76, so that the frictional resistance is reduced and the driving force of the rotating plate 76 can be reduced. In addition, since the torque generated by the motor as the drive source of the rotating plate 76 may be small, it is possible to reduce the size, and thus the fluid transport device 20 can also be reduced in size.

  Furthermore, since the fluid transport device 20 and the fluid storage container 90 are communicated with each other by the tube 80, the fluid storage container 90 can be easily replaced. Therefore, it is easy to handle and the fluid transport device 20 is repeatedly used. So there is an economic effect.

In this embodiment, when the rollers 50 to 53 are pivotally supported on the rotating plate 76, a structure is employed in which the rollers 50 to 53 are inserted into the roller shaft 54 and locked by the C ring 58. It is also possible to adopt a structure that supports the shaft.
(Embodiment 2)

Next, a fluid transportation device according to Embodiment 2 of the present invention will be described with reference to the drawings. In the second embodiment, in contrast to the structure in which the pressing shaft is pressed against the tube 80 by the roller in the first embodiment described above, a rotating pressing plate 100 is provided instead of the roller, and the rotating pressing plate 100 is rotated to thereby press the pressing shaft. It is characterized by pressing. Therefore, the structure of the rotary pressing plate 100 will be mainly described, description of other common parts will be omitted, and the same parts as those in the first embodiment will be described with the same reference numerals.
FIG. 4 is a partial plan view of the fluid transportation device 20 according to the second embodiment, and FIG. 5 is a cross-sectional view showing a BB cross section of FIG. Since the structure of the pump unit 30 in the second embodiment is the same as that in the first embodiment, the description thereof is omitted.

  5 and 6, a rotary pressing plate 100 (see FIG. 4) having four protrusions is provided on the upper surface of the rotating plate 76. The rotary pressing plate 100 is mounted with the four roller support shafts 55 into which the rollers 50 to 53 described in the first embodiment (see FIG. 3) are inserted as guide shafts, and is also locked by the C ring 58. ing. The rotation pressing plate 100 is rotated together with the rotation plate 76 with the same rotation center as that of the rotation plate 76. The four protrusions described above are the pressing portions 101 to 104 that press the pressing shafts 40 to 47. The shape and action of the rotary pressing plate 100 will be described in detail with reference to FIG.

  FIG. 6 is a plan view showing the shape of the rotary pressing plate 100. In FIG. 6, the rotary pressing plate 100 has four pressing portions 101 to 104 formed on the outer peripheral portion. The pressing parts 101 to 104 are provided at equal intervals of 90 degrees in the circumferential direction. A hole 105 through which the shaft portion of the rotary wheel 56 is inserted is formed in the central portion, and four holes 106 through which the roller support shaft 55 is inserted are formed in the outer peripheral direction. Since the pressing portions 101 to 104 have a point-symmetric shape with respect to the rotation center G, the pressing portion 101 will be described as an example.

  When the rotary pressing plate 100 rotates, the arc 108 is formed with a diameter that is in contact with the pressing shafts 40 to 47 or has a slight gap, and does not press the pressing shafts 40 to 47. When the rotary pressing plate 100 rotates, one of the pressing shafts is gradually started to be pressed by the inclined surface 109, reaches the maximum pressing stroke in the outer circumferential arc 110 (the rotation trajectory C of the rotary pressing plate 100), and closes the tube 80. Thereafter, when the rotary pressing plate 100 further rotates, it reaches the slope 111 and gradually moves away from the pressing shaft, and the tube 80 is released from the closed state. At this time, the fluid flows into the tube 80. In this way, the rotary pressing plate 100 imparts a peristaltic motion to the pressing shafts 40 to 47 to transport the fluid.

  In addition, the recessed part 107 is provided between the adjacent press parts, and the press shafts 40-47 are making the state open | released completely in the recessed part 107. FIG. Further, the concave portion 107 and the circular arc 108, the circular arc 108 and the inclined surface 109, the inclined surface 109 and the outer peripheral arc 110, and the outer peripheral arc 110 and the inclined surface 111 are smoothly rounded to press the pressing shaft smoothly. .

  When the pressing shafts 40 to 47 move away from the rotary pressing plate 100, the pressing shafts 40 to 47 are structured to move to the rotation center G side by the elastic force of the tube 80 so that the tube 80 is closed.

  In addition, as described in the first embodiment, the angle formed by the pressing shaft 40 and the pressing shaft 47 is set to 90 degrees or more, so that any one of the pressing portions adjacent to the rotary pressing plate has the tube 80. Blocked.

Therefore, according to the above-described second embodiment, the frictional resistance when pressing the pressing shafts 40 to 47 is slightly increased as compared with the structure including a plurality of rollers according to the above-described first embodiment, but one rotating pressing plate 100 is provided. Since the same driving can be performed only by providing, the structure can be simplified.
Furthermore, if several numbers and shapes of the pressing parts are prepared, there is an effect that the fluid flow rate can be easily changed by replacing the rotary pressing plate in accordance with a desired fluid flow rate.

  In the second embodiment (see FIGS. 4 and 5), the rotary pressing plate 100 is mounted on the roller shaft 54 as a guide shaft, but may be configured to be mounted directly on the roller support shaft 55. In addition, the object of the present invention can be realized even if the four roller shafts or the roller support shafts are two diagonal pairs (one pair).

  Further, the rotary pressing plate 100 and the rotary plate 76 can be integrally formed. Moreover, it can also be set as the structure provided with four rotation press plates corresponding to the rollers 50-53 like Embodiment 1, and it shall be set as the rotation press plate provided with two or three press parts. You can also.

In this way, the structure of the fluid transport device 20 can be simplified, and the cost can be reduced.
(Embodiment 3)

  Subsequently, Embodiment 3 of the present invention will be described with reference to the drawings. Embodiment 3 is a structure in which the fluid transporter 10 in Embodiments 1 and 2 described above is configured such that the fluid transport device 20 and the fluid storage container 90 are provided separately and communicated by a tube 80. Form 3 is characterized in that the fluid transport device and the fluid storage container are provided integrally in the housing.

  FIG. 7 is an exploded perspective view showing the fluid transporter according to the third embodiment. The same parts as those in the first and second embodiments will be described with the same reference numerals. In FIG. 7, the fluid transporter 10 includes a fluid transporting device unit 200 and a fluid storage unit 190 formed in a housing having a bowl-like shape in plan view. The housing includes a case 182 corresponding to the lower lid according to the first and second embodiments and an upper lid 181, and is screwed and fixed by fixing screws 95 (four in FIG. 7).

  The case 182 is formed with two parallel recesses, one of the recesses is provided with a pump unit 30 and a pump drive unit (not shown), and the other recess is formed with a fluid storage unit 190. The fluid storage unit 190 and the pump unit 30 are communicated with each other through a tube 180. One end 192 of the tube 180 passes through the fluid accommodating part 190, partway through the outer periphery of the pump unit 30, and the other end extends outside the fluid transporter 10.

  The pump unit 30 has the same structure as that of the first and second embodiments described above, and is a structure that transports fluid by the peristaltic motion of the pressing shafts 40 to 47 (see FIGS. 2 to 6).

  A packing (not shown) is provided at one end portion 192 of the tube 180 and the communication portion between the case 182 and the upper lid 181 so that the fluid does not leak from the fluid storage portion 190 into the pump unit 30. It is desirable that the fluid storage unit 190 is provided with an opening that is closed with, for example, a breathable film so that the pressure is substantially equal to the external pressure when the upper lid 181 is attached.

  Note that the upper lid 181 and the case 182 can be fixed by heat welding or adhesive bonding, in addition to screw fixing.

  Therefore, according to the third embodiment described above, the pump unit 30 and the fluid storage unit 190 are arranged so as not to overlap each other, so that the size can be reduced without increasing the thickness. In addition, since the pump unit 30 and the housing for the fluid storage unit 190 are formed as one, the cost can be reduced.

It should be noted that the present invention is not limited to the above-described embodiment, and modifications, improvements, and the like within the scope that can achieve the object of the present invention are included in the present invention.
For example, in the first to third embodiments, the fluid flow amount (transportation amount) can be set by the number of rollers, the number of pressing portions of the rotating plate, and the like. A plurality of pieces of information for arbitrarily selecting the rotation speed of 76 can be stored, the rotation speed can also be selected, and further, information for intermittently driving the rotary plate 76 can be stored to flow the fluid intermittently. You can also.

  Therefore, according to the above-described first to third embodiments, it is possible to provide a thin, small-sized fluid transport device that maintains a stable fluid flow rate, and a fluid transport device including the fluid transport device.

  The fluid transport device and the fluid transport device of the present invention are mounted inside or outside the device in various mechanical devices, and are used for transporting fluids such as water, saline, chemicals, oils, aromatic liquids, inks, and gases. Can be used. Further, the fluid transporter alone can be used for the flow and supply of the fluid.

  Furthermore, the fluid transport device described above is small and thin, and can accurately control the flow rate of the fluid, so that it can be stored in a fluid container and can be implanted in a living body, for the development or treatment of new drugs. Suitable for adoption.

The perspective view which shows the external appearance of the fluid transporter which concerns on Embodiment 1 of this invention. The top view which shows the fluid transport apparatus which concerns on Embodiment 1 of this invention. Sectional drawing which shows the fluid transport apparatus which concerns on Embodiment 1 of this invention. The fragmentary top view which shows the fluid transport apparatus which concerns on Embodiment 2 of this invention. Sectional drawing which shows the fluid transport apparatus which concerns on Embodiment 2 of this invention. The top view which shows the shape of the rotation press board which concerns on Embodiment 2 of this invention. The disassembled perspective view which shows the fluid transport device which concerns on Embodiment 3 of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Fluid transporter, 20 ... Fluid transport apparatus, 32 ... Tube frame, 32B ... Tube guide wall, 40-47 ... Pressing shaft, 43B ... Pushing part, 43A ... Pressing part, 50-53 ... Roller, 76 ... Rotating plate 80 ... Tube, 100 ... Rotary pressing plate, 101 ... Pressing part.

Claims (3)

An elastic tube;
A tube frame having a tube guide wall for mounting the tube in an arc shape;
A rotating plate that is arranged inside the tube and whose center of rotation coincides with the center of the arc of the tube guiding wall;
A plurality of pressing shafts disposed between the tube and the rotating plate and arranged radially from the rotation center of the rotating plate;
A rotary pressing plate that is detachably mounted on the upper surface of the rotating plate, and is provided with a pressing portion that presses the pressing shaft;
Is provided,
The pressing shaft is composed of a hemispherical pressing portion whose one end abuts on the rotary pressing plate, and a hook-shaped pressing portion whose other end presses the tube,
The rotary pressing plate is divided into a plurality of outer peripheral arc portions that press the pressing shaft to close the tube,
In the plurality of outer peripheral arc portions, a space for opening the tube is formed between the outer peripheral arc portions adjacent to each other, and the number of the outer peripheral arc portions can be appropriately changed. A fluid transporting device comprising: a fluid transport device configured to sequentially press the pressing shaft and flow the fluid from the fluid inflow side toward the outflow side. The fluid transport device according to claim 1,
Wherein the plurality of arc-shaped outer peripheral portion is fluid transportation device, characterized in that recesses opening is formed the tube between the outer arcuate portion adjacent one of the plurality of the outer circumferential arc. The fluid transport device according to claim 1 or 2 , wherein the fluid transport device is configured to press a tube having elasticity and transport the fluid.
A fluid container for containing fluid; and
With
The fluid transporter, wherein the fluid transport device and the fluid container are communicated by the tube.

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