JP5439519B2 - pump - Google Patents

Description

  The present invention relates to a chemical solution transport pump used in the medical field, for example.

  Pumps that transport fluids are used in a wide variety of technical fields and applications. For example, since a diaphragm pump for transporting a chemical used in the medical field is for transporting a chemical, it is necessary to frequently replace consumable parts such as a diaphragm for transporting a fluid for hygiene purposes.

  For example, in order to replace the diaphragm of the diaphragm pump, there are many disassembly steps, and it is also necessary to remove the carrier fluid staying in the pump, which is complicated. In addition, since pumps used in the medical field require high hygiene management, in recent years, instead of exchanging only the diaphragm, the peripheral portion of the diaphragm is unitized, and each unit is replaced. There is a growing demand for easy replacement and maintenance.

  This invention is made | formed in view of said situation, and makes it a subject to provide the pump which can perform a maintenance easily.

The present invention is a pump having a fluid transport unit that transports a transport fluid by a predetermined transport unit, and a drive unit that is configured integrally with the fluid transport unit and drives the transport unit by a working fluid. A first drive unit provided on one side of the fluid transfer unit; a second drive unit provided on the other side of the fluid transfer unit; and a third drive unit for pumping the working fluid. It has the 1st conveyance member provided in the conveyance part side, and the 2nd conveyance member provided in the 1st drive part side and the 2nd drive part side, and the 1st conveyance member conveys conveyance fluid by the fluid conveyance part side A second diaphragm that is actuated by working fluid on the first drive unit side and the second drive unit side, the first diaphragm being closed. And the second diaphragm are elastic together The first and second diaphragms are configured to be detachable so that the fluid transport unit can be detached from the first drive unit and the second drive unit. First fixing means for detachably fixing to the third driving part, and second fixing means for detachably fixing the fluid conveyance part to the first driving part and the second driving part, are provided. The means includes a bolt for fixing the fluid conveyance portion to the third drive portion, an insertion hole formed in the fluid conveyance portion and through which the bolt is inserted, and a shaft portion of the bolt provided in the third drive portion. And a hooking portion for hooking the shaft portion .

According to this configuration, the fluid conveyance unit and the first diaphragm can be unitized, and the second diaphragm and the drive unit can be unitized. Thus, when it is desired to replace the respective diaphragms, in order to be replaced every units, it is possible to easily carry out maintenance.
Moreover, it can be made to function as one pump by fixing a fluid conveyance part to a drive part, and integrating.

Further, in the pump according to the present invention, the second fixing means is formed in the screw hole formed in the fluid conveying portion, the bolt fitted in the screw hole, the first driving portion and the second driving portion, and the bolt. When the first drive unit and the second drive unit are aligned with the fluid transporting unit so that the first diaphragm and the second diaphragm overlap, the screw hole of the second fixing means and the above-mentioned It is desirable to be configured so that the insertion hole matches.

  According to the present invention, maintenance can be easily performed.

It is a front view of the pump which concerns on a reference example . It is a side view of a pump similarly. It is sectional drawing which shows the state from which the fluid conveyance part was isolate | separated from the drive part. It is a front view of a 2nd connection part and a 2nd fixing | fixed part. It is a side view which shows the operation | movement which attaches a fluid conveyance part to a drive part. It is a side view which shows the operation | movement which removes a fluid conveyance part from a drive part. It is a fragmentary sectional view of the pump concerning a reference example . It is a front view which similarly shows the 2nd connection part and 2nd fixing | fixed part of a pump. It is sectional drawing of the pump which concerns on one Embodiment of this invention , (a) is whole sectional drawing, (b) is a principal part enlarged view. It is a perspective view of a pump similarly. It is a perspective view of a pump similarly. It is a perspective view of a pump similarly. It is a perspective view of a pump similarly.

  Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.

1 to 6 show a reference example of a pump according to the present invention. The pump 1 according to the reference example includes a fluid transport unit (pump head) 2 that transports a transport fluid, a fluid transport unit 3 for transporting the transport fluid of the fluid transport unit 2 , and a drive that drives the fluid transport unit 3 Part 4.

  The fluid transport unit 2 functions integrally with the drive unit 4 during pump operation. As shown in FIG. 3, the fluid transport unit 2 includes an inflow unit 5 into which the transport fluid flows, a discharge unit 6 through which the transport fluid is discharged, and a transport fluid formed between the inflow unit 5 and the discharge unit 6. And a fluid conveyance path 7. Each of the inflow part 5 and the discharge part 6 is provided with check valves (check balls) 8 and 9 for preventing the backflow of the carrier fluid.

  The fluid transport means 3 includes a first transport member 11 provided on the fluid transport unit 2 side and a second transport member 12 provided on the drive unit 4 side. The first transport member 11 closes a part of the fluid transport path 7 that transports the transport fluid on the fluid transport unit 2 side, and transports the transport fluid by elastic deformation, and a shaft portion for pressing the diaphragm 13 (Hereinafter referred to as “first shaft portion”) 14.

  The diaphragm 13 is formed in a circular shape by, for example, a synthetic resin. As shown in FIG. 3, the diaphragm 13 is integrally fixed to a part of the fluid transport unit 2. The diaphragm 13 is fixed to a main body (hereinafter referred to as “fluid transport section main body”) 2 a of the fluid transport section 2 via a fixing member 16. Specifically, the diaphragm 13 is fixed to the fluid transport unit main body 2 a by sandwiching the edge between the fluid transport unit main body 2 a and the fixing member 16. The fixing member 16 is formed with a plurality (four in the illustrated example) of fixing parts (hereinafter referred to as “first fixing parts”) 17 for fixing the fluid conveyance part 2 to the driving part 4. A detailed configuration of the first fixing portion 17 will be described later.

  The diaphragm 13 constitutes a part of the fluid transport unit 2 by closing a part of the fluid transport path 7 of the fluid transport unit 2. The diaphragm 13 causes the transport fluid to flow into the fluid transport path 7 from the inflow portion 5 by a predetermined reciprocating motion, and discharges it from the discharge portion 6. When the diaphragm 13 is fixed to the fluid transport unit 2, one unit is configured by the diaphragm 13 and the fluid transport unit 2.

  The first shaft portion 14 protrudes from one surface of the diaphragm 13. The first shaft portion 14 is detachably connected to a second transport member 12 provided on the drive portion 4 side. A connecting portion (hereinafter referred to as “first connecting portion”) 19 connected to the second transport member 12 is provided at the protruding end portion of the first shaft portion 14. The first connecting portion 19 is configured in a disk shape (flange shape) having a diameter larger than that of the first shaft portion 14.

  The second transport member 12 is attached to the drive unit 4 so as to reciprocate in a predetermined direction. The second transport member 12 has a shaft portion (hereinafter referred to as “second shaft portion”) 21 supported by the drive unit 4 so as to reciprocate in a predetermined direction. A connecting portion (hereinafter referred to as “second connecting portion”) 22 that is detachably connected to the first connecting portion 19 of the first shaft portion 14 is provided at one end of the second shaft portion 21. . Further, a flange portion 23 that receives a driving force from the driving portion 4 is formed at the other end portion of the second shaft portion 21. The first connecting portion 19 and the second connecting portion 22 function as connecting means for connecting the first transport member 11 and the second transport member 12.

  As shown in FIGS. 3 and 4, the second connecting portion 22 includes a recess 26 into which the first connecting portion 19 is inserted and an engaging groove 27 with which a midway portion of the first shaft portion 14 is engaged. The bottom surface of the recess 26 is formed in an arc shape when viewed from the front. The width of the recess 26 is slightly larger than the diameter of the second connecting portion 22 so that the second connecting portion 22 can enter. The engaging groove 27 of the second connecting portion 22 is formed linearly from the upper end of the second connecting portion 22 downward.

  The first connecting portion 19 and the second connecting portion 22 are connected as follows. That is, the first connecting portion 19 is inserted into the recess 26 from above the second connecting portion 22, and the middle portion of the first shaft portion 14 is engaged with the engaging groove 27 and lowered downward, whereby the connection between the two is achieved. Made.

  The drive unit 4 includes a motor 30 for driving the second shaft unit 21 and a drive unit body 4 a that supports the second shaft unit 21. As shown in FIG. 3, the drive unit main body 4 a includes a first divided body 31 and a second divided body 32. The first divided body 31 includes a cylindrical portion 33 that supports the second shaft portion 21 of the second conveying member 12 and a fixing portion that fixes the driving portion 4 to the fluid conveying portion 2 (hereinafter referred to as “second fixing portion”). 34 is formed.

  The second shaft portion 21 is inserted inside the tube portion 33. Thereby, the cylinder part 33 is supporting this 2nd axial part 21 so that the 2nd axial part 21 can reciprocate in a cylindrical center direction (axial center direction).

  A flange portion 35 having a diameter larger than that of the cylindrical portion 33 is formed at the end portion of the first divided body 31. The second fixing portion 34 is formed on the flange portion 35. A plurality of (four in the illustrated example) second fixing portions 34 are formed in the flange portion 35. A detailed configuration of the second fixing portion 34 will be described later.

  A concave portion 36 is formed in the center portion of the flange portion 35, which is recessed in the tube center direction of the tube portion 33. A hole of the cylindrical portion 33 is formed through the bottom surface 35 a of the recess 36. Further, the end of the second shaft portion 21 protrudes from the bottom surface 35 a of the recess 35.

  A sealing member 37 for sealing the shaft portion is provided on the bottom surface 35 a of the recess 35. The sealing member 37 is formed in an annular shape, and has a seal member (oil seal) 7a on the periphery of the central portion thereof. The sealing member 37 is fixed to the drive unit main body 4a (first divided body 31) by means such as a bolt.

A biasing member 38 that biases the second shaft portion 21 in a predetermined direction is provided in the drive unit main body 4a. A space 39 for accommodating the urging member 38 is formed between the first divided body 31 and the second divided body 32, and the urging member 38 has the second shaft portion 21 in the space 39. The flange portion 23 is urged. For example, the compression coil spring is employed as the urging member 38. The pump 1 is configured to convert the rotational force of the shaft portion of the motor 30 into a pressing force that presses the second shaft portion 21 toward the fluid conveying portion 2 at a predetermined cycle by a cam. When the pressing force does not act, the flange portion 23 of the second shaft portion 21 is attached so that the second shaft portion 21 is returned to the position before pressing (the second shaft portion 21 is separated from the fluid transport portion 2). It is fast.

  The first divided body 31 and the second divided body 32 are provided with flange portions 41 and 42 for connecting each other. Each flange part 41 and 42 is connected by fastening means, such as a volt | bolt, Thereby, the 1st division body 31 and the 2nd division body 32 are united, and the drive part main body 4a is comprised. As described above, the drive unit 4 is configured as one unit by the drive unit main body 4a, the second transport member 12, and the motor 30.

  A fixing means 45 that detachably fixes the fluid transport unit 2 to the drive unit 4 is provided between the fluid transport unit body 2a that configures the fluid transport unit 2 and the drive unit body 4a that configures the drive unit 4. . The fixing means 45 includes the first fixing part 17 of the fluid transport unit 2 and the second fixing part 34 of the driving unit 4.

  As shown in FIG. 3, the first fixing portion 17 is provided with a columnar shaft portion 46 that protrudes from the fixing member 16 and a protruding end portion of the shaft portion 46, and a circle having a diameter larger than that of the shaft portion 46. And a plate portion 47.

  As shown in FIG. 3, the second fixing portion 34 includes a latching recess 48 that latches the disc portion 47 of the first fixing portion 17, and a guide groove 49 that guides the shaft portion 46 of the first fixing portion 17. Have

  The latching recess 48 is formed long in the vertical direction, and its bottom surface 48 a is a concave curved surface having a circular arc shape when viewed from the front so as to match the shape of the disk portion 47 of the first fixing portion 17. The side surface 48b of the latching recess 48 is a straight flat surface in the vertical direction when viewed from the front.

  As shown in FIG. 4, the guide groove 49 is formed in a straight line that is long in the vertical direction. The lower end of the guide groove 49 does not reach the bottom of the latching recess 48 and is formed in a range up to the middle of the latching recess 48 in the vertical direction.

  An insertion port 50 for the disc portion 47 into which the disc portion 47 of the first fixed portion 17 can be inserted and removed is formed in the upper portion of the latching recess 48. The insertion port 50 has an arcuate edge 50a. The radius of curvature of the arcuate edge 50a of the insertion port 50 is slightly larger than the diameter of the first fixed portion 17 so that the disc portion 47 of the first fixed portion 17 can be inserted into the latching recess 48. Is formed. The insertion port 50 is formed so as to be connected to the upper portion of the guide groove 49.

A maintenance method of the pump 1 according to the reference example (attachment / detachment method of the fluid conveyance unit 2 with respect to the drive unit 4) will be described below.

  In order to attach the fluid transport unit 2 to the drive unit 4, the first connection part 19 of the first shaft part 14 of the first transport member 11 is higher than the second connection part 22 of the second shaft part 21 of the drive unit 4. The fluid conveyance part 2 is lifted so that it may become. Then, while maintaining the height as it is, the fluid conveyance unit 2 is brought close to the drive unit 4, the first connection unit 19 is positioned above the second connection unit 22, and the disk unit 47 of the first fixing unit 17 is The second fixing portion 34 is positioned above the latching recess 48. Then, the fluid transfer unit 2 is lowered downward, the first connecting part 19 is put into the recessed part 26 of the second connecting part 22, and the disk part 47 of the first fixing part 17 is put into the latching recessed part 48 of the second fixing part 34. Put in. At this time, the first shaft portion 14 enters the engagement groove 27 of the second connection portion 22, and the shaft portion 46 of the first fixing portion 17 enters the guide groove 49 of the second fixing portion 34.

  Furthermore, the fluid conveyance unit 2 is lowered, the first connecting unit 19 reaches the bottom of the recess 26 of the second connecting unit 22, and the disc portion 47 of the first fixing unit 17 reaches the bottom of the latching recess 48. At this time, the attachment of the fluid transport unit 2 to the drive unit 4 is completed, and the transport fluid unit, the fluid transport unit 3, and the drive unit 4 can function as a single pump 1.

  In order to remove the unitized fluid transport unit 2 from the drive unit 4, the connection between the first connection part 19 and the second connection part 22 and the fixation between the first fixing part 17 and the second fixing part 34 are released. There is a need. In order to cancel this, the fluid conveyance unit 2 is lifted upward with respect to the drive unit 4. Then, the first connecting portion 19 that has been fitted in the concave portion 26 of the second connecting portion 22 moves upward along the longitudinal direction of the concave portion 26, and the first fixed portion that has been fitted in the latching concave portion 48 of the second fixing portion 34. The disc portion 47 of the portion 17 moves upward along the longitudinal direction of the latching recess 48. When the fluid transport unit 2 is lifted upwardly from the depth of the concave portion 26 and the latching concave portion 48, the connection state between the first connection portion 19 and the second connection portion 22, and the first fixing portion 17 and the second fixing portion. The fixed state with the unit 34 is released. Thereafter, the fluid conveyance unit 2 is moved in the horizontal direction so as to be separated from the driving unit 4. Thus, the removal of the fluid transport unit 2 from the drive unit 4 is completed.

According to the pump 1 according to the reference example described above, when the diaphragm 13 is replaced by unitizing the fluid transport unit 2 and the diaphragm 13 which is a part of the fluid transport unit 3, the unit Since they can be exchanged, maintenance of the pump 1 can be facilitated.

  Moreover, the first connection part 19 of the first conveyance member 11 on the fluid conveyance part 2 side and the second connection part 22 of the second conveyance member 12 are simply moved up and down with respect to the drive part 4. Since the connection and the release of the connection are possible, the replacement work of the fluid transport unit 2 can be easily performed.

  Similarly, only by moving the fluid transport unit 2 up and down with respect to the drive unit 4, the first fixing unit 17 of the fluid transport unit body 2a and the second fixing unit 34 of the drive unit body 4a can be fixed and released. Since this is possible, this operation can be easily performed. In addition, by securely fixing the fluid transport unit 2 to the drive unit 4, a desired function can be exhibited as one pump 1.

  Also, for example, when a conventional pump is used in the medical field, when it is desired to transport a plurality of chemical solutions separately without mixing them, if one chemical solution is transported and then another chemical solution is transported, Then, there was a problem that the two chemicals were mixed, which was not preferable. On the other hand, if the pump according to the present invention is used, the fluid transport unit 2 can be easily replaced for each chemical solution to be used, and therefore, it is particularly useful when it is desired to transport a plurality of chemical solutions separately without mixing them.

7 and 8 show another reference example of the pump 1 according to the present invention. In the present reference example , the configurations of the first connecting portion 19 of the first transport member 11 and the second connecting portion 22 of the second transport member 12 are different from the reference examples of FIGS . As shown in FIG. 7B, the first connecting portion 19 is formed in a long shape when viewed from the front. The first connecting portion 19 includes a pair of straight flat surfaces (hereinafter referred to as “first side surfaces”) 51 and 51 in a front view and a pair of curved surfaces (hereinafter referred to as “second side surfaces”) arcuate in side view. 52, 52.

  In the first connecting portion 19, the length in the longitudinal direction of each first side surface 51, 51 is longer than the width between the pair of first side surfaces 51, 51. The second side surfaces 52, 52 are formed in a convex shape with a predetermined radius of curvature. The first connecting portion 19 is fixed to the first shaft portion 14 that protrudes from the central portion of the diaphragm 13 that fixes the diaphragm 13 to the fluid conveying portion 2 at the center position in the longitudinal direction.

As shown in FIG. 8, the second connecting part 22 has a recess 26 into which the first connecting part 19 of the fixing member 16 on the fluid transport part 2 side is fitted. The recess 26 is provided at the center of the annular flange 35 of the drive unit main body 4a. An insertion port (hereinafter referred to as “first insertion port”) 56 for inserting the first connecting portion 19 is formed in the recess 26. The first insertion port 55 is similar to the shape of the front surface of the first connecting portion 19. The first insertion port 55 is formed to be slightly larger than the first connection part 19 so that the first connection part 19 can be inserted. Note that the recess 26 according to this reference example is not formed with the engagement groove 27 formed in the recess 26 illustrated in the reference example of FIGS .

  As shown in FIG. 8, the first insertion port 55 of the concave portion 26 includes a pair of linear edges 56 and 56 that are long in the vertical direction when viewed from the front (hereinafter referred to as “first edges”), and the first edges. And a pair of edge portions (hereinafter referred to as “second edge portions”) 57 and 57 that are arc-shaped in front view and are formed so as to connect the portions 56 and 56.

  The pair of first edge portions 56 and 56 are separated from each other at a predetermined interval. Each of the first edge portions 56 and 56 has a length in the vertical direction that is longer than a separation interval between the first edge portions 56 and 56.

  In addition, the concave portion 26 includes a circular side surface portion 59 that is set to the same radius as the radius of curvature of the second edge of the first insertion port 55, and a circular bottom surface that is surrounded by the side surface portion and that is circular when viewed from the front side. Part 60.

Moreover, the pump 1 according to the present reference example has a fixing means 45 for fixing them to each other between the fluid conveyance unit main body 2a and the drive unit main body 4a, as in the reference examples of FIGS . The fixing means 45 includes a first fixing part 17 provided in the fluid transport part main body 2a and a second fixing part 34 provided in the driving part main body 4a.

The 1st fixing | fixed part 17 has the axial part 46 and disc part 47 which were provided in the fixing member 16 which fixes the diaphragm 13 to the fluid conveyance part main body 2a similarly to the reference example of FIGS . Since the structure of the axial part 46 and the disc part 47 is the same as that of the reference example of FIGS. 1-6 , illustration is abbreviate | omitted.

  The 2nd fixing | fixed part 34 is formed in the end surface of the flange part 35 formed in the drive part main body 4a (1st division body 31). The second fixing portion 34 includes a latching recess 48 that latches the disc portion 47 of the first fixing portion 17 and a guide groove 49 that guides the shaft portion 46 of the first fixing portion 17. As shown in FIG. 8, the latching recess 48 is formed in an arc shape when viewed from the front along the circumferential direction (circumferential direction) of the flange portion 35.

  The latching recess 48 includes an insertion port (hereinafter referred to as “second insertion port”) for inserting the disc portion 47 of the first fixing portion 17 and a guide groove 49 for guiding the shaft portion 46 of the first fixing portion 17. Have The second insertion port of the latching recess 48 is formed in a circular shape on one end side of the latching recess 48. The diameter of the second insertion port is slightly larger than the diameter of the disc portion 47 so that the disc portion 47 of the first fixing portion 17 can be inserted.

  The guide groove 49 of the latching recess 48 is formed in an arc shape along the circumferential direction of the flange portion 35 so as to match the arc shape of the latching recess 48. The guide groove 49 is formed such that one end thereof is connected to the second insertion port. The other end of the guide groove 49 is located in the middle of the latching recess 48 and does not reach the end of the latching recess 48.

A maintenance method for the pump 1 according to this reference example (a method for attaching and removing the fluid conveyance unit 2 to / from the drive unit 4) will be described below.

  In order to attach the fluid transport unit 2 to the drive unit 4, the fluid transport unit body 2 a is brought close to the drive unit body 4 a and the first connection of the first shaft portion 14 of the first transport member 11 integrated with the fluid transport unit 2 is performed. The part 19 is inserted into the first insertion port 55 provided in the recess 26 of the second coupling part 22 of the second transport member 12 provided integrally with the drive part 4. Further, along with this insertion, the disc part 47 of the first fixing part 17 of the fluid transport part 2 is inserted into the second insertion port provided in the latching recess 48 of the second fixing part 34 of the drive part main body 4a.

  Next, the first connecting part 19 is connected to the second connecting part 22, and the fluid conveying part 2 is rotated in a predetermined direction in order to fix the first fixing part 17 to the second fixing part 34. Specifically, the first connecting portion 19 is moved to the back of the recessed portion 26 of the second connecting portion 22, and the disc portion 47 of the first fixing portion 17 is moved to the back of the latching recessed portion 48 of the second fixing portion 34. The fluid conveyance unit 2 is rotated about the axis of the first shaft unit 14 and clockwise with respect to the flange unit 35 of the drive unit main body 4a so as to be moved.

  Then, the first connecting portion 19 inserted into the first insertion port 55 of the concave portion 26 of the second connecting portion 22 rotates around the first shaft portion 14, and its end is a straight line of the first insertion port 55. Is located in a region between the edge of the shape and the circular side surface of the recess 26, and is hooked on the recess 26.

  Further, the disk portion 47 of the first fixing portion 17 inserted into the second insertion port of the latching recess 48 of the second fixing portion 34 is formed at one end portion in the longitudinal direction (arc direction) of the latching recess 48. The second insertion port moves from the second insertion port to the other end side of the latching recess 48. At this time, the shaft portion 46 of the first fixing portion 17 enters the guide groove 49 of the latching recess 48 and is guided to the other end side of the latching recess 48.

  The first connecting portion 19 rotates clockwise by a predetermined angle within the concave portion 26 of the second connecting portion 22, and the disc portion 47 of the first fixing portion 17 is moved from the second insertion port at one end of the latching concave portion 48. When moved to the end side, the fluid transport unit 2 and the drive unit 4 are integrated and can function as the pump 1.

  In order to remove the fluid transport unit 2 from the drive unit 4, the fluid transport unit 2 is connected to the first connection unit 19 and the second connection unit 22, and the first fixing unit 17 is not fixed to the second fixing unit 34. The part 2 is rotated around the first shaft part 14 and counterclockwise with respect to the flange part 35 of the drive part main body 4a.

  As a result, the disc portion 47 of the first fixing portion 17 located behind the latching recess 48 of the second fixing portion 34 moves to the second insertion port of the latching recess 48. At this time, the shaft portion 46 of the first fixed portion 17 is guided to the second insertion port via the guide groove 49.

  When the disk portion 47 of the first fixing portion 17 moves to the position of the second insertion port, the first connection portion 19 rotates counterclockwise by a predetermined angle, and the first connection portion 19 is moved to the first insertion port 55. Can be extracted from.

  From this state, the fluid transport unit 2 is horizontally moved away from the drive unit 4 along the axial direction of the first shaft portion 14 of the first transport member 11. Then, the first connecting portion 19 comes out of the first insertion port 55 of the second connecting portion 22, and the disc portion 47 of the first fixing portion 17 comes out of the second insertion port of the second fixing portion 34. Thereby, the removal of the fluid conveyance part 2 from the drive part 4 is completed.

According to the pump 1 according to the reference example described above, the first connecting portion 19 is inserted into the first insertion port 55 of the concave portion 26 of the second connecting portion 22, and the disc portion 47 of the first fixing portion 17 is set to the second position. The fluid conveyance unit 2 is attached to the drive unit 4 simply by being inserted into the second insertion port of the latching recess 48 provided in the latching recess 48 of the fixing unit 34 and rotating the fluid conveyance unit 2 by a predetermined angle. The fluid transport unit 2 can be removed from the drive unit 4 simply by rotating the fluid transport unit 2 in the opposite direction at the same angle. Thereby, the maintenance of the pump 1 can be easily performed.

The other points of this reference example have the same configuration as the reference example of FIGS. The description of the elements common to the reference example in FIGS. 1 to 6 will be omitted. In FIGS. 7 and 8, elements common to those in FIGS. 1 to 6 are denoted by common reference numerals. Also in this reference example , the same operational effects as those of the reference examples of FIGS .

9 to 13 show an embodiment of the pump 1 according to the present invention. The above-described pump 1 according to FIGS. 1 to 6, 7, and 8 reciprocates the diaphragm 13 by reciprocating the first shaft portion 14 and the second shaft portion 21 in the axial direction, thereby conveying the transport fluid. but were intended to convey, in the implementation form of this, the working fluid (hydraulic oil) is reciprocated Daiyafura beam by conveying the conveying fluid, illustrated pump 1 of the so-called direct acting type.

  The pump 1 according to the present embodiment includes a fluid transport unit 2, a fluid transport unit 3, a drive unit 4, and a gas discharge mechanism 65 that discharges gas mixed in the drive unit 4.

The fluid conveyance part 2 is provided with the inflow part 5, the discharge part 6, the fluid conveyance path 7, a backflow prevention means, etc. in the fluid conveyance part main body 2a similarly to the reference example of FIGS . The fluid transport unit 2 is provided with a plurality (two in the illustrated example) of first transport members 11. More specifically, the fluid transport unit 2 includes a plurality of (two in the illustrated example) fluid transport chambers 67 and 67 in the middle of the fluid transport path 7. Each of the fluid transfer chambers 67 and 67 is formed on one side surface and the other side surface of the fluid transfer unit 2. Each first transfer member 11 is configured integrally as a part of the fluid transfer chamber by closing the fluid transfer chambers 67 and 67.

1 to 6 described above, the fluid transport means 3 includes the first transport member 11 including the diaphragm 13 and the first shaft portion 14, and the second transport member 12 including the second shaft portion 21. However, in the present embodiment, the configuration is different. The fluid transport means 3 includes a diaphragm (hereinafter referred to as “first diaphragm”) 1 1 a that closes a part of a fluid transport path 7 in which the first transport member 11 transports a transport fluid on the fluid transport unit 2 side. , the second conveying member 12, a diaphragm which is actuated by the drive unit 4 side of the working fluid (hereinafter referred to as "the second diaphragm") configured to have a 1 2a. The first diaphragm 1 1 a and the second diaphragm 1 2 a are configured so as to be capable of transporting a transport fluid by elastic deformation.

Each of the diaphragms 11a and 12a is formed in a circular shape, and is elastically deformed by the pressure of the hydraulic oil, and a thick portion thicker than the film portion 71 formed on the periphery of the film portion 71. 72. As shown in FIG. 9, the thick portion 72 is formed with a through-hole 73 penetrating along the radial direction of each of the circular diaphragms 11a and 12a .

  The drive unit 4 is connected to the fluid transport unit 2 and drives two fluid transport units 3 via hydraulic oil (hereinafter referred to as “first drive unit” and “second drive unit”) 81, 82 and a portion (hereinafter referred to as “third drive unit”) 83 that pumps hydraulic oil to the first drive unit 81 and the second drive unit 82.

  The first drive unit 81 and the second drive unit 82 are different in that they are provided on one side and the other side of the fluid transport unit 2, and their structures are symmetrical with respect to the fluid transport unit 2. . That is, the structure of the 1st drive part 81 and the 2nd drive part 82 is the same. Hereinafter, in order to describe the first drive unit 81 and the second drive unit 82, the first drive unit 81 will be described as an example, and each element of the second drive unit 82 is denoted by the same reference numeral as the first drive unit 81. I will omit the explanation.

The first driving portion 81 (second driving unit 82), as shown in FIG. 9, the diaphragm drive chamber 85 is closed by the second diaphragm 1 2a is a second conveying member 12 and the operating oil restricting chamber 86, is provided It has been. The first drive unit 81 is connected to the third drive unit 83 via a hydraulic oil supply pipe 87. The 1st drive part 81 introduces the hydraulic oil pumped from the 3rd drive part 83 to the diaphragm drive chamber 85 via the hydraulic oil restriction chamber 86, and presses the 2nd diaphragm 12a with a predetermined period.

In the hydraulic oil restriction chamber 86, a valve body 88 and a valve seat 89 corresponding to the valve body 88 are provided. The valve body 88 is attached to the valve body support portion 90 via an urging means 91 such as a coil spring. The valve body 88 is fixed to a shaft 92 that communicates between the hydraulic oil restriction chamber 86 and the diaphragm drive chamber 85. One end of the shaft 92 is biased to the second diaphragm 1 2a side through the urging means 91 and the valve body 88, during normal operation, is in contact with the second diaphragm 1 2a.

  A shaft support portion 93 is provided between the hydraulic oil restriction chamber 86 and the diaphragm drive chamber 85. The shaft support portion 93 is formed with a through hole for allowing the hydraulic oil to flow between the hydraulic oil restriction chamber 86 and the diaphragm drive chamber 85. Further, the valve body support portion 90 is also formed with a through-hole for circulating hydraulic oil.

From the working oil supply pipe 87 the first driving unit 81, the hydraulic oil sent to the second driving unit 82, the shaft 92 is adapted to reciprocate together with the second diaphragm 1 2a. Therefore, when the pressure of excessive working oil to the second diaphragm 1 2a is applied, this pressure, the shaft 92 moves together with the second diaphragm 1 2a. At this time, the valve body 88 comes into contact with the valve seat 89, whereby the hydraulic oil is blocked from flowing into the diaphragm drive chamber 85. Thus, the hydraulic oil restriction chamber 86 can restrict the hydraulic oil so that the second diaphragm 12a is not excessively deformed.

The first driving portion 81 (second driving unit 82), connecting the first conveying member 11 of the fluid conveying means 3 (first diaphragm 1 1 a) and the second conveying member 12 (second diaphragm 1 2a) integrally Connecting means is provided. The connecting means includes an air suction part 97 for sucking air between the first transport member 11 and the second transport member 12, and a closing member (not shown) that closes the air suction part 97. The air suction unit 97 is provided below the first drive unit 81 and below the second drive unit 82.

As shown in FIG. 9, the air suction part 97 has a connection hole 97a connected to the second diaphragm 12a and a screw hole 97b in which an internal thread is formed. The closing member has a male screw portion that is screwed into the screw hole 97 b of the air suction portion 97.

  The third drive unit 83 includes a hydraulic oil tank that stores hydraulic oil, and a pumping unit that pumps the hydraulic oil in the hydraulic oil tank to the first drive unit 81 and the second drive unit 82 (not shown). The pressure feeding means has a piston for feeding hydraulic oil to the first drive unit 81 and the second drive unit 82 at a predetermined pressure while being accommodated in a predetermined casing, and has a predetermined cycle by the reciprocation of the piston. The hydraulic oil can be pumped. The 3rd drive part 83 can send hydraulic fluid to the 1st drive part 81 and the 2nd drive part 82 so that a phase may shift 180 degrees by the reciprocation of a piston.

  Fixing means 45 for fixing the fluid transport unit 2 to each drive unit 4 is provided between each drive unit 4 and the fluid transport unit 2. The fixing unit 45 includes a fixing unit (hereinafter, referred to as “first fixing unit”) 45 a that fixes the fluid transport unit 2 to the third drive unit 83, and the first drive unit 81 and the second drive unit 82. Fixing means (hereinafter referred to as “second fixing means”) 45b.

  The first fixing means 45a includes a bolt 101 for fixing the fluid transport unit 2 to the third drive unit 83, an insertion hole 102 formed in the fluid transport unit 2 and through which the bolt 101 is inserted, and a third drive. A hook portion 103 is provided on the portion 83 and connected to the shaft portion of the bolt 101 to hook the shaft portion. The latching portion 103 is configured in a cylindrical shape that protrudes from the third driving portion 83 toward the fluid conveyance portion 2, and has a female screw portion into which a shaft portion (male screw portion) of the bolt 101 is screwed.

  The first fixing means 45a abuts the fluid transport unit 2 on the third drive unit 83 so that the insertion hole 102 of the fluid transport unit 2 and the hooking portion 103 of the third drive unit 83 are aligned with each other, and the bolt 101 is inserted into the insertion hole 102, and the shaft portion is further screwed into the female screw portion of the latching portion 103 and tightened, whereby the fluid conveying portion 2 and the third driving portion 83 can be fixed.

  In the present embodiment, a plurality (four in the illustrated example) of second fixing means 45 b are provided between the fluid transport unit 2 and the first drive unit 81 and the second drive unit 82.

  As shown in FIGS. 11 to 13, each of the second fixing means 45 b includes a screw hole 105 formed in the side surface of the fluid transport unit 2, a bolt 106 fitted in the screw hole 105, a first drive unit 81, and It has an insertion hole 107 through which the bolt 106 is inserted, which is formed in the second drive unit 82.

The pump 1 according to this embodiment includes a first transport member 11 (first diaphragm 1 1 a) provided in the fluid transport unit 2, and a second transport member 12 provided in the first drive unit 81 and the second drive unit 82. When the fluid transport unit 2 and the first drive unit 81 and the second drive unit 82 are combined so that the (second diaphragm 12a ) overlaps, the screw hole 105 and the insertion hole 107 of the second fixing means 45b are Configured to match.

  The fixing means 45 inserts the bolt 106 into the insertion hole 107 in a state where the screw hole 105 and the insertion hole 107 coincide with each other, and screws the end of the bolt 106 into the screw hole 105 and fastens it. The fluid conveyance unit 2 can be fixed to the first drive unit 81 and the second drive unit 82.

  The gas discharge mechanism 65 is provided in each of the first drive unit 81 and the second drive unit 82. In order to describe the gas discharge mechanism 65, the gas discharge mechanism 65 provided in the first drive unit 81 will be described, and the gas discharge mechanism 65 provided in the second drive unit 82 will be denoted by the same reference numerals. I will omit the explanation.

  The gas discharge mechanism 65 includes a first gas discharge path 110 that discharges gas accumulated in the hydraulic oil restriction chamber 86, a second gas discharge path 111 that discharges gas accumulated in the diaphragm drive chamber 85, and a first gas discharge path. 110, a first ball body 112 for preventing backflow, a second ball body 113 for preventing backflow provided on the top of the second gas discharge path 111, a first gas discharge path 110, a second A third gas discharge path 114 that merges with the gas discharge path 111, a third ball body 115 provided on the top of the third gas discharge path 114, and an adjustment valve 116 that adjusts the lift amount of the third ball body 115; And a gas discharge pipe portion 117 for discharging the gas. Such a gas discharge mechanism 65 can appropriately discharge the gas accumulated in the hydraulic oil restriction chamber 86 and the diaphragm drive chamber 85 from the gas discharge piping unit 117 while adjusting the gas discharge amount via the adjustment valve 116. It has become.

  Hereinafter, a maintenance method for the pump 1 according to the present embodiment (a method for attaching and detaching the fluid conveyance unit 2 to / from the drive unit 4) will be described.

  In order to attach the fluid transport unit 2 to the drive unit 4, first, the fluid transport unit 2 is fixed to the third drive unit 83 by the first fixing means 45 a. And the fluid conveyance part 2 is fixed to the 1st drive part 81 and the 2nd drive part 82 by the 2nd fixing means 45b.

When the fluid transport unit 2 is fixed to each drive unit 4, the first diaphragm 1 1 a as the first transport member 11 attached to the fluid transport unit 2, the first drive unit 81, and the second drive unit 82. The second diaphragm 12a as the second conveying member 12 attached to the first and second diaphragms 12a and 12a is positioned so as to be close to each other and overlap.

At this time, the male thread formed on the end of the hose of the suction means such as another pump connected is screwed into the internal thread of the air suction part 97, by the suction means, the first diaphragm 1 1 a and the second diaphragm Aspirate air between 1 and 2a . Thereby, the air existing between the first diaphragm 1 1 a and the second diaphragm 1 2a is discharged to the outside, the first diaphragm 1 1 a and the second diaphragm 1 2a is in a state of being in close contact.

When the suction of air by the suction means is completed, the air suction part 97 is closed by the closing member in order to maintain the state. Thus, linked state is maintained first diaphragm 1 1 a and the second diaphragm 1 2a is in close contact.

  By the above, attachment with respect to the drive part 4 of the fluid conveyance part 2 is completed, and both can unite and can exhibit the function as the pump 1. FIG.

In order to remove the fluid transport unit 2 from the drive unit 4, the closing member that closes the air suction unit 97 is removed. Then, the air suction unit 97, the coupling hole 97a, the external air through the through-hole 73 of the second diaphragm 1 2a is flowed between the first diaphragm 1 1 a and the second diaphragm 1 2a, thereby, the The connection (contact) between the first diaphragm 1 1 a and the second diaphragm 1 2 a is released.

  Next, the fixing of the fluid transport unit 2 to the first drive unit 81 and the second drive unit 82 by the second fixing means 45b is released, and the first drive unit 81 and the second drive unit 82 are separated from the fluid transport unit 2. Like that.

  Then, the fixing of the fluid transport unit 2 to the third drive unit 83 by the first fixing means 45 a is released, and the fluid transport unit 2 is separated from the third drive unit 83. Thus, the removal of the fluid transport unit 2 from the drive unit 4 is completed.

According to the pump 1 according to the present embodiment described above, the first transport member 11 (first diaphragm 1 1 a) and the second transport member 12 (second diaphragm 1 2a ) are integrally connected by the connecting means. by, both of which function as a single Daiyafura-time together. This makes it possible to reliably carry a desired carrier fluid.

  The connecting means can easily connect the first transport member 11 and the second transport member 12 simply by sucking air from the air suction portion 97, and can be easily removed simply by removing the lid from the air suction portion 97. The connection between the first transport member 11 and the second transport member 12 can be released, and the maintenance of the pump 1 is facilitated by such a simple detachable structure between the first transport member 11 and the second transport member 12. Will be able to do.

Furthermore, when removing the fluid transport unit 2 from the first drive unit 81 and the second drive unit 82, the fluid transport chamber is blocked by the first transport member 11 (first diaphragm 1 1 a). The transport fluid in the fluid transport section 2 does not leak out, and maintenance of the pump 1 (replacement operation of the fluid transport section 2) can be easily performed also by this.

Similarly, when the fluid transport unit 2 is removed from the first drive unit 81 and the second drive unit 82, the first drive unit 81 and the second drive unit 82 are moved by the second transport member 12 (second diaphragm 12a ). The diaphragm drive chamber 85 and the hydraulic oil restriction chamber 86 are closed, so that the hydraulic oil filled in the diaphragm drive chamber 85 and the hydraulic oil restriction chamber 86 does not leak to the outside. Exchange work) can be easily performed.

The other points in the present embodiment are the same as those in the reference example in FIGS. 1 to 6, and elements common to the reference example in FIGS. To do. Also in this embodiment, there exists an effect similar to the reference example of FIGS .

  In addition, this invention is not limited to said embodiment, A various change and deformation | transformation are possible.

  For example, the example in which the disc portion 47 is provided in the first fixing portion 17 is shown, but this shape is not limited to the disc shape, and is configured in a polygonal shape such as a triangular shape or a quadrangular shape or other irregular shapes. In short, any shape may be used as long as it functions as a latching portion that is latched by the latching recess 48 of the second fixing portion 34.

  Moreover, you may make it provide the pressure gauge which measures the pressure between the 1st conveying member 11 and the 2nd conveying member 12 in the closure member of said connection means. Thereby, for example, it is possible to detect the pressure when the first conveying member 11 or the second conveying member 12 is broken, and it is possible to effectively confirm the presence or absence of an abnormality and early detection of a failure.

DESCRIPTION OF SYMBOLS 1 ... Pump, 2 ... Fluid conveyance part, 2a ... Fluid conveyance part main body, 3 ... Fluid conveyance means, 4 ... Drive part, 4a ... Drive part main body, 5 ... Inflow part, 6 ... Discharge part, 7 ... Fluid conveyance path, 8 ... check valve, 9 ... check valve, 11 ... first conveying member, 12 ... second conveying member, 1 1 a ... first diaphragm 1 2a ... second diaphragm, 13 ... diaphragm, 14 ... first axis 16, a fixing member, 17, a first fixing portion, 19, a first connecting portion, 21, a second shaft portion, 22, a second connecting portion, 23, a flange portion, 26, a concave portion, 27, an engaging groove, DESCRIPTION OF SYMBOLS 30 ... Motor, 31 ... 1st division body, 33 ... Cylindrical part, 34 ... 2nd fixing | fixed part, 35 ... Flange part, 36 ... Recessed part, 36a ... Bottom face of recessed part, 37 ... Sealing member, 37a ... Sealing member, 38 ... biasing member, 39 ... space, 41 ... flange part, 42 ... flange part, 45 ... fixing means, 45a ... first fixing Means 45b second fixing means 46 shaft part 47 disk part 48 latching recess 49 guide groove 50 insertion port 50a edge of insertion port 51 first side surface 52 ... 2nd side surface, 55 ... 1st insertion port, 56 ... 1st edge part, 57 ... 2nd edge part, 59 ... Side surface part, 60 ... Bottom surface part, 61 ... 2nd insertion port, 65 ... Gas discharge mechanism, 67 ... Fluid transfer chamber, 71 ... Membrane portion, 72 ... Thick portion, 73 ... Through hole, 81 ... First drive portion, 82 ... Second drive portion, 83 ... Third drive portion, 85 ... Diaphragm drive chamber, 86 ... hydraulic oil restriction chamber, 87 ... hydraulic oil supply pipe, 88 ... valve body, 89 ... valve seat, 90 ... valve body support part, 91 ... biasing means, 92 ... shaft, 93 ... shaft support part, 97 ... air suction Part 97a ... connection hole 97b ... screw hole 101 ... bolt 102 ... insertion hole 105 ... screw hole 106 ... bolt 107 ... Through hole 110 ... first gas discharge path 111 ... second gas discharge path 112 ... first ball body 113 ... second ball body 114 ... third gas discharge path 115 ... third ball body 116 ... Adjustment valve, 117 ... Gas discharge piping

Claims (2)

In a pump having a fluid conveyance unit that conveys a conveyance fluid by a predetermined conveyance unit, and a drive unit that is configured integrally with the fluid conveyance unit and that drives the conveyance unit by a working fluid ,
The drive unit includes a first drive unit provided on one side of the fluid transfer unit, a second drive unit provided on the other side of the fluid transfer unit, and a third drive unit for pumping the working fluid,
The transport means includes a first transport member provided on the fluid transport unit side, and a second transport member provided on the first drive unit side and the second drive unit side,
The first transport member has a first diaphragm that closes a part of the transport path that transports the transport fluid on the fluid transport unit side,
The second transport member has a second diaphragm that is operated by a working fluid on the first drive unit side and the second drive unit side,
The first diaphragm and the second diaphragm are configured so as to be capable of transporting a transport fluid by elastic deformation,
In order to the detachable fluid delivery part from the first driving unit and the second drive moving unit, the first diaphragm and the second diaphragm is constructed detachably,
First fixing means for detachably fixing the fluid transport section to the third drive section, and second fixing means for detachably fixing the fluid transport section to the first drive section and the second drive section. ,
The first fixing means includes a bolt for fixing the fluid conveyance unit to the third drive unit, an insertion hole formed in the fluid conveyance unit and through which the bolt is inserted, and provided in the third drive unit and the bolt. A pump comprising: a hook portion connected to the shaft portion and hooking the shaft portion . The second fixing means includes a screw hole formed in the fluid conveying portion, a bolt fitted in the screw hole, and an insertion hole formed in the first driving portion and the second driving portion and through which the bolt is inserted. ,
When the first drive unit and the second drive unit are aligned with the fluid transfer unit so that the first diaphragm and the second diaphragm overlap, the screw hole of the second fixing means and the insertion hole are configured to coincide with each other. the pump of claim 1 that.

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