JP4317466B2 - Tube type pump device - Google Patents

Description

  The present invention relates to a tube-type pump device that transfers a liquid in a tube by moving a crushing member while crushing an elastic tube.

  The tube pump device for transferring the liquid in the tube by moving the crushing member along the elastic tube while the elastic tube is crushed by a crushing member such as a roller, such as food, cosmetics, pharmaceuticals, machinery, chemistry, etc. Expected use in the field.

  However, in this type of pump device, the elastic tube is deteriorated in a short period because the roller is in a state of crushing the elastic tube even during the liquid feeding suspension period. Therefore, there is an inconvenience that the elastic tube must be periodically replaced.

  Therefore, a cam body to which the driving force from the drive source is transmitted and a roller support body for supporting the tube crushing roller are provided, and the roller is caused to appear from the retracted position to the crushing position by the cam body during liquid feeding. Then, when the roller support is driven to rotate and the liquid feeding is stopped, a configuration is considered in which only the cam body is rotated in the reverse direction to return the roller from the collapsed position to the retracted position.

  However, when such a cam mechanism is employed, the cam does not work if the cam body and the roller support are rotated when the roller is returned from the crushing position to the retracted position. Therefore, a frictional force is always applied to the roller support to prevent the cam body and the roller support from rotating.

  However, the conventional tube type pump device requires a mechanism for rotating both the cam body and the roller support body and preventing their rotation, so that the structure is complicated. Therefore, there is a problem that the assembly work efficiency is low. In addition, when the frictional force of the braking spring is used to prevent rotation, there is a problem that it is difficult to improve reliability because wear occurs. In addition, when the pump device is downsized, the diameter of the roller support is reduced. Therefore, in order to obtain a predetermined braking load, it is necessary to increase the size of the braking spring. Since the spring is easily damaged by the wear and fatigue, there is a problem that it is more difficult to improve the reliability.

  In view of the above problems, the subject of the present invention is a tube pump that can simplify the structure and improve the reliability by adopting a structure that does not require a rotation prevention mechanism using a spring. To provide an apparatus.

In order to solve the above-described problem, in the present invention, a wall surface, an elastic tube that is disposed along the wall surface, and the inside of which is used as a flow path, and a crush that is disposed so as to sandwich the elastic tube between the wall surfaces And a crushing member that moves along the wall surface while crushing the elastic tube, thereby moving the liquid in the elastic tube to bring the crushing member closer to the wall surface. A crushing member support that is displaceably supported between a crushing position and a retracted position that is separated from the wall surface, a drive mechanism that drives the crushing member support along the wall surface, and movement of the crushing member support And a cam portion that displaces the crushing member from the retracted position to the crushing position on the crushing member support when the crushing member passes through the crushing member and the crushing member support. After the crushing member is displaced to the crushing position with the movement of the crushing member support, the displaced state is maintained, and when the crushing member support moves in the opposite direction, the crushing member The crushing member support is a rotating body that holds a roller as the crushing member on the outer peripheral side, and is a first guide groove extending in the radial direction. And a second guide groove extending continuously from one end in the circumferential direction from the radially outer end of the first guide groove, the elastic tube, the wall surface around the crushing member support, The roller is supported by the crushing member support, and the rotation support shaft is in contact with the cam portion. In the guide groove and the second plan Characterized in that it is displaceably supported in the groove.

Moreover, in another form of this invention, the crushing member arrange | positioned so that the said elastic tube may be pinched | interposed between the wall surface, the elastic tube which is arrange | positioned along this wall surface, and the inside becomes a flow path, and the said wall surface And a crushing member that moves along the wall surface while crushing the elastic tube to transfer the liquid in the elastic tube, and the crushing member approaches the wall surface. A crushing member support that is displaceably supported between a position and a retracted position that is separated from the wall surface, a drive mechanism that drives the crushing member support along the wall surface, and a movement of the crushing member support And when the crushing member passes, the crushing member is displaced from the retracted position to the crushing position on the crushing member support, and the crushing member and the crushing member support are After the crushing member is displaced to the crushing position with the movement of the crushing member support, the displaced state is maintained, and when the crushing member support moves in the reverse direction, the crushing member is moved from the crushing position. It is comprised so that it may return to the said retracted position, The said crushing member support body is a rotary body which hold | maintains the roller as said crushing member on the outer peripheral side, The said elastic tube and said wall surface around the said crushing member support body The cam portion is arranged at a position out of a region where the roller crushes the elastic tube in the movement trajectory of the roller.

In this case, in the roller, the rotation support shaft is supported by the crushing member support, the rotation support shaft abuts on the cam portion, and the crushing member support is a first member extending in the radial direction. And a second guide groove continuously extending from one end in the radial direction of the first guide groove to the one side in the circumferential direction, and the rotation support shaft is disposed in the first guide groove and It is desirable that the second guide groove is supported so as to be displaceable.

According to the tube pump device according to the present invention, when the crushing member support is driven, the crushing member that was in the retracted position is displaced from the retracted position to the collapsed position when passing through the cam portion, and remains in this displaced state. The crushing member support moves. For this reason, since the crushing location of the elastic tube is displaced, the fluid in the elastic tube is pushed out. Therefore, although the crushing member support moves, the cam portion does not move, and therefore it is not necessary to prevent the crushing member support and the cam portion from being rotated by the rotation preventing mechanism provided with the braking spring. Therefore, reliability can be improved. Further, since the structure can be simplified, it is possible to reduce the number of parts and the assembly cost. Here, in the configuration in which the cam portion is arranged at a position out of the region where the roller crushes the elastic tube in the movement trajectory of the roller, the cam portion displaces the roller to the crushing position. When it tries, it does not receive a repulsive force from an elastic tube. Accordingly, the roller can be reliably displaced.

In this invention, it is preferable that the front-end | tip part in a said 2nd guide groove is provided with the escape part which swells at least to radial direction outer side, and escapes the said rotation support shaft to radial direction outer side. If comprised in this way, since the rotation support shaft in a 2nd guide groove will be in the state escaped to the radial direction outer side by the escape part during liquid feeding, a rotation support shaft does not hit a cam part strongly.

In the present invention, the crushing member support includes a third guide groove that continuously extends from the radially outer end of the first guide groove to the other side in the circumferential direction, and the rotation support shaft includes: It is preferable that the first guide groove, the second guide groove, and the third guide groove are supported so as to be displaceable. If comprised in this way, if the rotation direction of a crushing member support body is reversed, the direction through which a fluid flows can be reversed. In this case, it is preferable that the tip end portion of the third guide groove is provided with an escape portion that bulges at least radially outward and allows the rotation support shaft to escape radially outward. If comprised in this way, since the rotation support shaft in a 3rd guide groove will be in the state escaped to the radial direction outer side by the escape part during liquid feeding, a rotation support shaft does not hit a cam part strongly.

  In the present invention, it is preferable that two or more rollers are supported by the crushing member support at positions spaced apart in the circumferential direction.

In the present invention, the crushing member support moves, but the cam portion that displaces the crushing member from the retracted position to the crushing position does not move, so that a rotation prevention mechanism having a braking spring is unnecessary. Therefore, problems such as deterioration of the braking spring do not occur, so that reliability can be improved. In addition, since the rotation prevention mechanism and the like can be omitted, the structure can be simplified, and the number of parts and the assembly cost can be reduced. Moreover, in the form which employ | adopted the structure by which the cam part was arrange | positioned in the movement locus | trajectory of a roller and the position which the roller remove | deviated from the area | region which crushes an elastic tube, the cam part tried to displace a roller to a crushing position. When receiving no repulsive force from the elastic tube. Accordingly, the roller can be reliably displaced.

  Embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 and FIG. 2 are an exploded perspective view when each member constituting the tubular pump device to which the present invention is applied is viewed obliquely from above, and an exploded perspective view when viewed from obliquely below. 3 and 4 are a plan view and a longitudinal sectional view showing a configuration of a main part of a tube type pump device to which the present invention is applied. FIGS. 5A, 5B, 5C, and 5D are explanatory views showing how the rollers are displaced in the tube type pump device to which the present invention is applied. 6 (A) and 6 (B) are explanatory views of cam portions formed on the upper case and the lower case of the tube type pump device to which the present invention is applied.

  1 to 4, the tube type pump device 1 according to the present embodiment includes a motor case 10 in which a motor 20 is accommodated, a lower case 30 having a rectangular planar shape, a rotating body 40, and a rectangular lid shape. The upper case 50 is stacked in this order, and the upper case 50, the lower case 30, and the motor case 10 are connected by four bolts 15.

  In the lower case 30, a substantially circular recess 35 that opens upward is formed, and an inner peripheral wall 350 of the recess 35 stands upright from the bottom. A rotating body 40 is disposed in the recess 35, and an elastic tube 60 having a flow path inside is disposed so as to surround the outer peripheral portion of the rotating body 40. Both end portions of the elastic tube 60 are drawn out of the case from the rectangular cutout portion of the lower case 30 through the tube drawing holes 38 and 39. The support shaft 32 stands upright at the center of the recess 35.

  The rotating body 40 includes a disk-shaped lower first rotating plate 41 and a disk-shaped upper second rotating plate 42 disposed opposite to the first rotating plate 41, and includes a first rotating plate 41. When the plate-like protrusions 411 and 412 protruding upward from the rotary plate 41 are fitted into the holes of the second rotary plate 42, the first rotary plate 41 and the second rotary plate 42 are integrated. Further, in the rotating body 40, a cylindrical bearing portion 48 protruding upward from the first rotating plate 41 is fitted in the central hole of the second rotating plate 42, and the support shaft 32 is placed in the cylindrical bearing portion 48. Is inserted.

  In the rotating body 40, a pair of guide grooves 43 and 44 are formed on the outer peripheral side of the first rotating plate 41 at symmetrical positions with the cylindrical bearing portion 48 as the center. As shown in FIG. 5 (A), the first guide grooves 431 and 441 extending in the radial direction and the end portions on the outer peripheral side of the first guide grooves 431 and 441 continuously extend in the counterclockwise direction. The second guide grooves 432 and 442 and the third guide grooves 433 and 443 continuously extending in the clockwise direction from the outer peripheral ends of the first guide grooves 431 and 441, 43 and 44 have a T-shape. A pair of guide grooves 45, 46 are formed on the outer peripheral side of the second rotary plate 42 at positions facing the guide grooves 43, 44 of the first rotary plate 41, and these guide grooves 45, 46 are formed. In the same manner as the guide grooves 43 and 44 of the first rotating plate, the first guide grooves 451 and 461 extending in the radial direction and the counterclockwise direction from the outer peripheral ends of the first guide grooves 451 and 461 Second guide grooves 452 and 462 continuously extending in the first direction, and third guide grooves 453 and 463 continuously extended in the clockwise direction from the outer peripheral ends of the first guide grooves 451 and 461, The guide grooves 45 and 46 have a T-shape.

  Here, the second guide grooves 432, 442, 452, and 462 are provided with escape portions 430, 440, 450, and 460 having bulged tip portions, and the end portions of the rotation support shafts 711 and 721 are illustrated in FIG. As shown in D), the escape portions 430, 440, 450, and 460 can be retracted radially outward. In addition, the third guide grooves 433, 443, 453, 463 are also provided with escape portions 430, 440, 450, 460 whose tip portions swell, and the end portions of the rotation support shafts 711, 721 are provided in the third guide. Even in the grooves 433, 443, 453, and 463, the escape portions 430, 440, 450, and 460 can be retracted radially outward.

  1 to 4 again, the rotating body 40 supports a pair of rollers 71 and 72 between the first rotating plate 41 and the second rotating plate 41. These rollers 71 and 72 are both The lower end portions of the rotation center shafts 711 and 721 are fitted into the guide grooves 43 and 44 of the first rotation plate 41, and the upper end portions of the rotation center shafts 711 and 721 are the guide grooves 45 of the second rotation plate 42, 46. Accordingly, the rollers 71 and 72 are supported on the outer peripheral side of the rotating body 40 so as to be rotatable around the rotation center shafts 711 and 721. In this state, the rotation center shafts 711 and 721 are guided by the guide grooves 43, 44, and 45. , 46 can be displaced. The rollers 71 and 72 are provided with large-diameter flange portions on both end faces, and the roller surfaces 710 and 720 positioned between them are structured to be recessed radially inward from the outer peripheral edge of the flange portion. . In addition, the roller surfaces 710 and 720 have a curved shape in which rising portions are formed on both sides in the width direction and the central portion is slightly recessed.

  In the present embodiment, external teeth are formed on the outer peripheral side surface of the first rotating plate 41. In addition, a pinion 24 is fixed to the output shaft 23 of the motor, and a large-diameter gear of a gear 25 that is rotatably supported by the fixed shaft 21 is meshed with the pinion 24. The small-diameter gear of the gear 25 is partially exposed to the recess 35 in the hollow protrusion 37 of the lower case 30 and is formed on the outer peripheral surface of the first rotating plate 41 on the inner peripheral surface of the recess 35. Engage with external teeth. For this reason, the rotating body 40 can be rotated around the support shaft 32 by the motor 20.

  As shown in FIGS. 2 and 6A, the upper case 50 is formed with a concave portion 55 having a planar shape that is shallower than the concave portion 35 of the lower case 30 but substantially the same as the concave portion 35. In addition, a circular protrusion 53 is formed on the upper bottom portion of the concave portion 55 so as to surround the receiving portion 56 of the support shaft 32, and tube lead holes 38 and 39 are formed in the outer peripheral portion of the circular protrusion 53. A substantially triangular cam portion 51 is formed with the top facing the top.

  Further, as shown in FIGS. 1 and 6B, also in the lower case 30, a circular protrusion 33 is formed at the bottom of the recess 35 so as to surround the support shaft 32, and an outer peripheral portion of the circular protrusion 33 is formed. Is formed with a substantially triangular cam portion 31 with the top facing the direction in which the tube drawing holes 38 and 39 are formed.

(Operation)
7A to 7H are explanatory views showing the operation of the tube type pump device to which the present invention is applied.

  In the tubular pump device 1 of this embodiment, the rollers 71 and 72 are in a state of sandwiching the elastic tube 60 between the inner peripheral wall 350 of the recess 35 in the assembled state. In this state, immediately before the start of the operation transmission, as shown in FIG. 7A, the first roller 71 is located at a position slightly shifted counterclockwise CCW from the cam portions 31 and 51, and its symmetry. The second roller 72 is located at the position. In this state, the rotation center shafts 711 and 721 of the rollers 71 and 72 are positioned in the first guide grooves 431, 441, 451, and 461 (see FIG. 5A). Therefore, the rollers 71 and 72 are in positions (retracted positions) where the elastic tube 60 is not crushed between the inner peripheral wall 350 of the recess 35.

  In this state, it is assumed that the rotating body 40 is driven to rotate clockwise CW by the motor 20 and enters the state shown in FIG. In this state, the rotation support shaft 711 of the first roller 71 is guided radially outward by the cam portions 31 and 51 (see FIG. 5B), and the rotation support shaft 711 includes the first guide groove 431, It moves from 451 to the 2nd guide grooves 432 and 452 (refer FIG.5 (C)). As a result, the first roller 71 moves radially outward on the rotating body 40. Such a radially outer position is a crushing position where the elastic tube 60 can be crushed.

  In this state, it is assumed that the rotating body 40 is further driven to rotate clockwise CW, and after going through the states shown in FIGS. 7C, 7D, and 7E, the state shown in FIG. During this time, the rotation support shaft 711 of the first roller 71 remains positioned in the second guide grooves 43 and 452 (see FIG. 5D), and the first roller is located on the rotating body 40. It remains in the radially outer side (crush position). On the other hand, in the second roller 72, the rotation support shaft 721 starts to be guided radially outward by the cam portions 31 and 51, and the rotation support shaft 721 is guided from the first guide grooves 441 and 461 to the second guide. It starts to move to the grooves 442 and 462. As a result, the second roller 72 also starts to move radially outward (crush position) on the rotating body 40.

  Next, as shown in FIG. 7G, when the rotation support shaft 721 of the second roller 72 passes the cam portions 31 and 51, the rotation support shaft 721 of the second roller 72 is completely moved to the second position. It moves to the back of the guide grooves 442 and 462.

  Then, as shown in FIG. 7H, when the rotating body 40 rotates while the rollers 71 and 72 are positioned radially outward, the elastic tube 60 is crushed by both the rollers 71 and 72, and The collapsed position rotates clockwise CW. As a result, the fluid in the elastic tube 60 is pushed out from the outlet of the elastic tube 60 as indicated by an arrow OUT, while a new fluid is sucked from the inlet as indicated by an arrow IN. Therefore, if the rotating body 40 is continuously rotated clockwise CW by driving the motor, the fluid can be continuously fed.

  In the meantime, the rotation support shafts 711 and 721 are in a position shifted radially outward within the escape portions 430, 440, 450 and 460 formed at the tip portions of the second guide grooves 432, 442, 452 and 462. Therefore, when the rollers 71 and 72 pass through the cam portions 31 and 51 due to the rotation of the rotating body 40, the end portions of the rotation support shafts 711 and 721 do not hit the cam portions 31 and 51 strongly.

  Here, when it is desired to stop liquid feeding, the motor drive is rotated in the reverse direction, and the rotating body 40 is counteracted by an angle until the rotation support shafts 711 and 721 return to the first guide grooves 431, 442, 452, and 462. When rotated clockwise CCW, the rotation support shafts 711, 721 of the rollers 71, 72 move relative to the clockwise CW on the rotating body 40, and the elastic return force of the elastic tube 60 against the rollers 71, 72 Since the rollers 71 and 72 are pushed inward in the radial direction by (repulsive force), the rotation center shafts 711 and 721 move from the second guide grooves 432, 442, 452 and 462 to the first guide grooves 431, 442 and 452. , 462. Accordingly, since the rollers 71 and 72 are displaced inward in the radial direction, the liquid feeding can be stopped. In addition, when it is desired to resume liquid feeding, the rotating body 40 is rotated at most once in a clockwise direction, and a steady state as shown in FIG.

(Main effects of this form)
As described above, in the tube pump device 1 of the present embodiment, the rotating body 40 rotates and moves, but the cam portions 31 and 51 do not move, so that a rotation prevention mechanism including a braking spring is unnecessary. Therefore, problems such as deterioration of the braking spring do not occur, so that reliability can be improved. In addition, since the rotation prevention mechanism and the like can be omitted, the structure can be simplified, and the number of parts and the assembly cost can be reduced.

  Further, when it is desired to stop the liquid feeding, if the rotating body 40 is slightly rotated backward, the rollers 71 and 72 are automatically retracted inward in the radial direction (retreat position). Is not crushed by the rollers 71, 72. Therefore, the life of the elastic tube 60 can be greatly extended.

  Further, the cam portions 31 and 51 are arranged at positions out of the region where the rollers 71 and 72 crush the elastic tube 60 in the movement trajectory of the rollers 71 and 72. When trying to displace, the elastic tube 60 does not receive a repulsive force. Therefore, the rollers 71 and 72 can be reliably displaced.

  Furthermore, in the tube pump device 1 according to the present embodiment, the guide grooves 43, 44, 45, 46 of the rotating body 40 are arranged in the circumferential direction from the radially outer ends of the first guide grooves 431, 441, 451, 461. Since the second guide grooves 432, 442, 452, 462 and the third guide grooves 433, 443, 453, 463 extend on both sides, if the rotation direction of the rotating body 40 is reversed, the fluid flowing direction is reversed. Can be made.

[Other embodiments]
In the above embodiment, the guide grooves 43, 44, 45, and 46 of the rotating body 40 have a T-shape, but the second guide groove and the third guide groove are symmetrically formed in a curved shape. It may be. The cam portions 31 and 51 are not limited to the configuration formed in each of the upper and lower cases, but may be formed only in one case, or may be formed on the support shaft 32 or the like. Furthermore, although the said form was the example which used the rollers 71 and 72 as a crushing member , the number is not limited to two, One or three or more may be sufficient .

  As described above, in the present invention, the crushing member support moves, but the cam portion that displaces the crushing member from the retracted position to the crushing position does not move. It is unnecessary. Therefore, problems such as deterioration of the braking spring do not occur, so that reliability can be improved. In addition, since the rotation prevention mechanism and the like can be omitted, the structure can be simplified, and the number of parts and the assembly cost can be reduced. Moreover, when stopping liquid feeding, if a crushing member support material is reversely rotated, a crushing member will retract. Therefore, the elastic tube is not crushed by the crushing member during the stoppage period of the liquid feeding, so that the life of the elastic tube can be greatly extended.

It is a disassembled perspective view when each member which comprises the tube type pump apparatus to which this invention is applied is seen from diagonally upward. It is a disassembled perspective view when each member which comprises the tube type pump apparatus to which this invention is applied is seen from diagonally downward. It is a top view which shows the structure of the principal part of the tube type pump apparatus to which this invention is applied. It is a longitudinal cross-sectional view which shows the structure of the principal part of the tube type pump apparatus to which this invention is applied. (A)-(D) is explanatory drawing which shows a mode that a roller displaces in the tube type pump apparatus to which this invention is applied, respectively. (A), (B) is explanatory drawing of the cam part formed in the upper case of a tube type pump apparatus to which this invention is applied, and a lower case, respectively. (A)-(H) are each explanatory drawings which show operation | movement of the tube type pump apparatus to which this invention is applied.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Tube type pump apparatus 20 Motor 31, 51 Cam part 40 Rotating body (Crushing member support body)
41 First Rotating Plate 42 Second Rotating Plate 43, 44 Guide Groove 60 Elastic Tube 71, 72 Roller (Crushing Member)
350 Inner wall (wall surface)
430, 440, 450, 460 Relief portions 431, 441, 451, 461 First guide grooves 432, 442, 452, 462 Second guide grooves 433, 443, 453, 463 Third guide grooves 711, 721 Rotating support shaft

Claims (7)

A wall surface, an elastic tube disposed along the wall surface, the inside of which is a flow path, and a crushing member disposed so as to sandwich the elastic tube between the wall surface, In the tube type pump device for transferring the liquid in the elastic tube by moving along the wall surface while crushing the elastic tube,
A crushing member support that supports the crushing member so as to be displaceable between a crushing position that approaches the wall surface and a retracted position that is separated from the wall surface, and a drive mechanism that drives the crushing member support along the wall surface. And a cam portion that displaces the crush member from the retracted position to the crush position on the crush member support when the crush member passes along with the movement of the crush member support,
The crushing member and the crushing member support are maintained in a displaced state after the crushing member is displaced to the crushing position as the crushing member support is moved, and the crushing member support is moved in the opposite direction. When moved, the crushing member is configured to return from the crushing position to the retracted position,
The crushing member support is a rotating body that holds a roller as the crushing member on the outer peripheral side, and is continuous from a radially extending first guide groove and a radially outer end of the first guide groove. A second guide groove extending on one side in the circumferential direction,
The elastic tube, the wall surface, and the cam are arranged around the crushing member support,
The roller has a rotation support shaft supported by the crushing member support, and the rotation support shaft abuts on the cam portion,
The tube-type pump device, wherein the rotation support shaft is supported so as to be displaceable in the first guide groove and the second guide groove. A wall surface, an elastic tube disposed along the wall surface, the inside of which is a flow path, and a crushing member disposed so as to sandwich the elastic tube between the wall surface, In the tube type pump device for transferring the liquid in the elastic tube by moving along the wall surface while crushing the elastic tube,
A crushing member support that supports the crushing member so as to be displaceable between a crushing position that approaches the wall surface and a retracted position that is separated from the wall surface, and a drive mechanism that drives the crushing member support along the wall surface. And a cam portion that displaces the crush member from the retracted position to the crush position on the crush member support when the crush member passes along with the movement of the crush member support,
The crushing member and the crushing member support are maintained in a displaced state after the crushing member is displaced to the crushing position as the crushing member support is moved, and the crushing member support is moved in the opposite direction. When moved, the crushing member is configured to return from the crushing position to the retracted position,
The crushing member support is a rotating body that holds a roller as the crushing member on the outer peripheral side,
The elastic tube, the wall surface, and the cam are arranged around the crushing member support ,
The tube-type pump device, wherein the cam portion is disposed at a position out of a region where the roller crushes the elastic tube in the movement locus of the roller. The roller according to claim 2, wherein the rotation support shaft is supported by the crushing member support, and the rotation support shaft is in contact with the cam portion.
The crushing member support includes a first guide groove extending in the radial direction and a second guide groove extending continuously from the radially outer end of the first guide groove to one side in the circumferential direction,
The tube-type pump device, wherein the rotation support shaft is supported so as to be displaceable in the first guide groove and the second guide groove. 4. The tube type according to claim 1, wherein a tip portion of the second guide groove includes a relief portion that swells at least radially outward to allow the rotation support shaft to escape radially outward. Pump device. 5. The crushing member support according to claim 1, wherein the crushing member support includes a third guide groove extending continuously from the radially outer end of the first guide groove to the other side in the circumferential direction.
The tube-type pump device, wherein the rotation support shaft is supported so as to be displaceable in the first guide groove, the second guide groove, and the third guide groove.   6. The tube type pump device according to claim 5, wherein a tip portion of the third guide groove is provided with an escape portion that bulges at least radially outward to allow the rotation support shaft to escape radially outward. . The tube type pump device according to any one of claims 1 to 6, wherein two or more rollers are supported on the crushing member support at positions spaced apart in the circumferential direction.

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