WO2016163306A1 - 二連往復動ポンプ - Google Patents
二連往復動ポンプ Download PDFInfo
- Publication number
- WO2016163306A1 WO2016163306A1 PCT/JP2016/060724 JP2016060724W WO2016163306A1 WO 2016163306 A1 WO2016163306 A1 WO 2016163306A1 JP 2016060724 W JP2016060724 W JP 2016060724W WO 2016163306 A1 WO2016163306 A1 WO 2016163306A1
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- WO
- WIPO (PCT)
- Prior art keywords
- switching
- valve mechanism
- working
- valve
- chamber
- Prior art date
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B43/00—Machines, pumps, or pumping installations having flexible working members
- F04B43/08—Machines, pumps, or pumping installations having flexible working members having tubular flexible members
- F04B43/10—Pumps having fluid drive
- F04B43/107—Pumps having fluid drive the fluid being actuated directly by a piston
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B43/00—Machines, pumps, or pumping installations having flexible working members
- F04B43/08—Machines, pumps, or pumping installations having flexible working members having tubular flexible members
- F04B43/10—Pumps having fluid drive
- F04B43/113—Pumps having fluid drive the actuating fluid being controlled by at least one valve
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B43/00—Machines, pumps, or pumping installations having flexible working members
- F04B43/08—Machines, pumps, or pumping installations having flexible working members having tubular flexible members
- F04B43/10—Pumps having fluid drive
- F04B43/113—Pumps having fluid drive the actuating fluid being controlled by at least one valve
- F04B43/1136—Pumps having fluid drive the actuating fluid being controlled by at least one valve with two or more pumping chambers in parallel
Definitions
- the present invention relates to a double reciprocating pump that transfers a transfer fluid by a pair of pump chambers formed by a movable partition member such as a pair of bellows.
- This type of pump has a movable partition member such as a pair of bellows.
- the pair of movable partition members divide the pair of closed spaces into a pump chamber and a working chamber.
- This type of pump transfers the transfer fluid by alternately compressing and expanding the pump chamber by alternately introducing the working fluid into the pair of working chambers thus partitioned by the switching valve mechanism.
- pulsation corresponding to the number of strokes is generally generated in the discharge flow rate of the transfer fluid.
- the double reciprocating pump according to the present invention is arranged so as to be deformable in the first space and the second space, and a case member that forms the first space and the second space along the axial direction therein. And a movable partition member that partitions the first space into a first pump chamber and a first working chamber, and partitions the second space into a second pump chamber and a second working chamber, A first switching valve mechanism that includes a first valve mechanism that switches the supply of the working fluid to one working chamber, and a second valve mechanism that includes a second valve mechanism that switches the supply of the working fluid to the second working chamber.
- a switching valve mechanism a first switching mechanism for switching supply of a control fluid for operating the first valve mechanism to the first switching valve mechanism, and a second valve mechanism for operating the second valve mechanism Second switching mechanism for switching supply of control fluid to the second switching valve mechanism
- the first and second switching mechanisms have an overlapping period in which the compression process of the first pump chamber and the compression process of the second pump chamber partially overlap each other. The supply to the first and second switching valve mechanisms is switched.
- each of the first and second switching valve mechanisms has a working fluid distribution chamber formed therein, and the first or second valve mechanism is formed in the distribution chamber. Is provided with a valve mechanism body which is arranged to be reciprocally movable.
- the valve mechanism body includes a working fluid introduction port that introduces the working fluid supplied from the working fluid source into the distribution chamber, and the working fluid introduced into the distribution chamber. And a working fluid inlet / outlet for discharging to the first or second working chamber.
- the valve mechanism main body further includes a first control fluid inlet / outlet and a second control fluid inlet / outlet for introducing the control fluid into the valve mechanism main body.
- each of the first and second valve mechanisms includes a plurality of large-diameter portions formed at predetermined intervals in the axial direction and a small-diameter portion formed between the large-diameter portions.
- the working fluid introduction port communicates with the working fluid inlet / outlet through the small-diameter portion by the movement of the first or second valve mechanism. It is discharged toward the second working chamber.
- the first and second switching mechanisms reciprocate in the valve body housing case and the valve body housing case, respectively, and their tips protrude from the valve body housing case.
- a valve body disposed so as to be able to contact an interlocking member interlocked with the movable partition member; and an elastic member that biases the valve body toward the interlocking member.
- FIG. 1 is a diagram showing a configuration of a double reciprocating pump 1 according to an embodiment of the present invention, showing a cross section and a peripheral mechanism thereof.
- a double reciprocating pump 1 on both sides of a pump head 1a arranged at the center, a bottomed cylindrical first cylinder 2a and a second cylinder 2b, which are case members, are provided.
- the openings are mounted and arranged so as to face each other.
- a pair of spaces are formed in the cylinders 2a and 2b along the axial direction.
- a first bellows 3a and a second bellows 3b having a bottomed cylindrical shape made of, for example, fluororesin that can extend and contract in the axial direction are attached to the pump head 1a so that their opening sides face each other. It is arranged coaxially in the installed state.
- bellows 3a, 3b are screwed and fixed, for example, in a liquid-tight manner to the pump head 1a. Therefore, the bellows 3a and 3b have the first pump chamber 5a and the second pump chamber 5b on the inner side, and the first working chamber 6a and the second working chamber 6b on the outer side, and the internal spaces of the cylinders 2a and 2b.
- a pair of movable partition members for partitioning is configured.
- the shaft fixing plate 4a and the shaft fixing plate 4b are fixed to the bottoms of the bellows 3a and 3b by bolts 15a.
- One end of the shaft 7a and the shaft 7b extending coaxially is fixed to the shaft fixing plates 4a and 4b.
- the other ends of the shafts 7a and 7b penetrate the center of the bottom of the cylinders 2a and 2b through the seal member 8 in an airtight manner and extend to the outside of the cylinders 2a and 2b.
- a connecting plate 9 a and a connecting plate 9 b are fixed to the other ends of the shafts 7 a and 7 b by nuts 10.
- the connecting plates 9a and 9b are connected in the axial direction by the connecting shaft 11a and the connecting shaft 11b at a predetermined position outside the cylinders 2a and 2b, for example, at the positions shown in the up and down directions in FIG.
- Each of the connecting shafts 11 a and 11 b includes a pair of shaft portions 12 and a shaft portion 13, and a coil spring 14 that is an expandable member mounted between the shaft portions 12 and 13.
- each of the connecting shafts 11a and 11b the ends of the shaft portions 12 and 13 opposite to the coil spring 14 side are fixed to the connecting plates 9a and 9b by bolts 15.
- the connecting shafts 11a and 11b connect the bellows 3a and 3b connected to the connecting plates 9a and 9b via the shafts 7a and 7b and the shaft fixing plates 4a and 4b in the axial direction via the coil springs 14, respectively. It is connected to extend freely.
- the pump head 1a is provided with a suction port 16 and a discharge port 17 for a transfer fluid, for example, a liquid, at a position facing the side surface of the pump.
- a suction valve 18a and a suction valve 18b are provided in a path from the suction port 16 to the pump chambers 5a and 5b, and a discharge valve 19a and a discharge valve 19b are provided in a path from the pump chambers 5a and 5b to the discharge port 17. Is provided.
- These suction valves 18a and 18b and discharge valves 19a and 19b constitute a valve unit.
- the cylinder side inlet / outlet 2c and the cylinder side inlet / outlet 2d are provided at the bottom of the cylinders 2a and 2b.
- These cylinder side inlets / outlets 2c, 2d are, for example, working fluid supplied from a working fluid source such as an air compressor (not shown), for example, working air, connected to the working air inlet / outlet 81a of the first switching valve mechanism 80a. This is for introducing or discharging to the working chambers 6a and 6b via the first main pipe 90a and the second main pipe 90b connected to the working air inlet / outlet 81b of the second switching valve mechanism 80b. is there.
- the first switching valve mechanism 80a includes a switching valve 86a that switches supply of working air to the working chamber 6a.
- the second switching valve mechanism 80b includes a switching valve 86b that switches the supply of working air to the working chamber 6b.
- the switching valves 86a and 86b of the first and second switching valve mechanisms 80a and 80b constitute first and second switching mechanisms 20a and 30a and a second switching mechanism that constitute a first switching mechanism described later. It is operated by a control fluid, for example, control air, whose supply is switched by the third and fourth switching mechanisms 20b and 30b.
- the control air is a part of the working air from the working fluid source.
- the first switching valve mechanism 80a includes a first valve mechanism body 85a in which a working air distribution chamber 84a is formed and in which the switching valve 86a is reciprocally moved.
- the second switching valve mechanism 80b includes a second valve mechanism main body 85b in which a working air distribution chamber 84b is formed and a switching valve 86b is reciprocally accommodated.
- the first and second valve mechanism main bodies 85a have working air inlets for introducing the working air supplied from the working fluid source into the distribution chambers 84a and 84b through the bifurcated air pipe 99a and the air pipe 99b.
- 87a and the working air introduction port 87b, and the working air inlet / outlet 81a and 81b described above are formed.
- the working air inlet / outlet 81a, 81b discharges the working air introduced into the distribution chambers 84a, 84b to the working chambers 6a, 6b via the first and second main pipes 90a, 90b, and the working chamber 6a,
- the working air discharged from 6b is introduced into the distribution chambers 84a and 84b via the first and second main pipes 90a and 90b.
- the first and second valve mechanism bodies 85a and 85b are provided with working air discharge ports 88a for discharging the working air discharged from the working chambers 6a and 6b and introduced into the distribution chambers 84a and 84b to the outside.
- a working air discharge port 88b is formed.
- a first control air inlet / outlet 82a and a second control air inlet / outlet 83a described later are formed in the first valve mechanism main body 85a, and a third control air described later is formed in the second valve mechanism main body 85b.
- An inlet / outlet 82b and a fourth control air inlet / outlet 83b are formed.
- the first and second control air inlet / outlets 82a and 83a are for introducing and discharging control air into the first valve mechanism main body 85a via the first and second control air pipes 92a and 92c. is there.
- the third and fourth control air inlets / outlets 82b and 83b are for introducing and discharging the control air into the second valve mechanism main body 85b via the third and fourth control air pipes 92b and 92d. is there.
- the switching valve 86a of the first switching valve mechanism 80a is reciprocated by control air introduced into the first valve mechanism main body 85a from the first and second control air inlets / outlets 82a and 83a.
- the switching valve 86b of the second switching valve mechanism 80b is reciprocally driven by control air introduced into the second valve mechanism main body 85b from the third and fourth control air inlet / outlets 82b and 83b.
- the switching valves 86a and 86b have three large diameter portions 89a and 89b formed at predetermined intervals in the axial direction, and two small diameter portions 98a and 98b formed between the large diameter portions 89a and 89b. .
- the large-diameter portions 89a and 89b selectively operate air inlets 87a and 87b, operating air inlets and outlets 81a and 81b, and operating air outlets 88a and 88b formed in the first and second valve mechanism bodies 85a and 85b. It is a thing to block.
- the small diameter portions 98a and 98b form distribution chambers 84a and 84b together with the inner wall surfaces of the first and second valve mechanism main bodies 85a and 85b.
- the first switching mechanism 20a constituting the first switching mechanism is detachably fixed to the cylinder 2a, for example, on a part of the bottom outer wall surface of the cylinder 2a.
- a second switching mechanism 30a constituting the first switching mechanism is integrally fixed to the cylinder 2a by, for example, integral molding on the lower side of the bottom side wall surface of the cylinder 2a. Yes.
- the first and second switching mechanisms 20a and 30a constituting the pair of first switching mechanisms are provided to switch the supply of control air to the first switching valve mechanism 80a.
- a third switching mechanism 20b constituting the second switching mechanism is detachably fixed to a part of the bottom outer wall surface of the cylinder 2b, for example, with respect to the cylinder 2b.
- a fourth switching mechanism 30b constituting the second switching mechanism is integrally fixed to the cylinder 2b by, for example, integral molding on the lower side of the bottom side wall surface of the cylinder 2b. Yes.
- the third and fourth switching mechanisms 20b and 30b constituting such a pair of second switching mechanisms are provided to switch the supply of control air to the second switching valve mechanism 80b.
- first switching mechanism 20a and the third switching mechanism 20b may be integrally fixed to the cylinders 2a and 2b, for example, by integral molding.
- the 2nd switching mechanism 30a and the 4th switching mechanism 30b may be arrange
- the first and second switching mechanisms 20a and 30a and the third and fourth switching mechanisms 20b and 30b partially overlap the compression process of the pump chamber 5a and the compression process of the pump chamber 5b. It operates to switch the supply of control air to the first and second switching valve mechanisms 80a and 80b so as to have an overlapping period OP (see FIG. 2).
- the first switching mechanism 20a constituting a part of the first switching mechanism includes a first housing case 21a that is fixed by, for example, screwing and fixing a flange portion (not shown) to the cylinder 2a. .
- the 3rd switching mechanism 20b which comprises a part of 2nd switching mechanism is provided with the 3rd storage case 21b fixed by detachably attaching the flange part which is not shown in figure to the cylinder 2b, for example with screwing. .
- On the side surfaces of the first and third housing cases 21a and 21b a control air introduction port 22a and a introduction port 22b are formed, and a control air discharge port 23a and a discharge port 23b are formed.
- a control air introduction path 91a and a control air introduction path 91b are connected to the introduction ports 22a and 22b of the first and third housing cases 21a and 21b, and a first control air pipe 92a and a second one are connected to the discharge ports 23a and 23b. 3 control air piping 92b is connected.
- the first and third storage cases 21a and 21b such as the first and third storage cases 21a and 21b, are provided at the predetermined positions, for example, on the side surfaces near the bottoms of the first and third storage cases 21a and 21b.
- a relief hole 24a and a relief hole 24b communicating with the outside are formed.
- the first switching mechanism 20a includes a first valve body 25a that constitutes a first valve body that reciprocates in the first housing case 21a.
- the 3rd switching mechanism 20b is provided with the 3rd valve body 25b which comprises the 2nd valve body which reciprocates within the 3rd storage case 21b.
- springs 26a and 26b for urging the first valve body 25a and the third valve body 25b toward the connecting plates 9a and 9b are provided.
- the front end of the first valve body 25a protrudes from the first housing case 21a toward the connecting plate 9a, and is arranged so as to be able to contact the inner surface of the connecting plate 9a.
- the tip of the third valve body 25b protrudes from the third housing case 21b toward the connecting plate 9b and is arranged so as to be able to contact the inner surface of the connecting plate 9b.
- the tip ends of the first and third valve bodies 25a, 25b continue with the connecting plates 9a, 9b. Abut. And it is comprised so that it may be pushed in the 1st and 3rd accommodating cases 21a and 21b against the elastic force of spring 26a, 26b as it is.
- the branch channel 27a formed between the first housing case 21a and the first valve body 25a, and the branch channel 27b formed between the third housing case 21b and the third valve body 25b are:
- the circuit is opened and the introduction ports 22a and 22b communicate with the discharge ports 23a and 23b.
- the branch flow paths 27a and 27b are opened, the control air supplied from the control air introduction paths 91a and 91b to the first and third switching mechanisms 20a and 20b is converted into the first control air pipe 92a and the third control air.
- the first control air inlet / outlet 82a and the third control air inlet / outlet 82b of the first and second switching valve mechanisms 80a and 80b are guided through the pipe 92b.
- first and third valve bodies 25a, 25b are in a separated state from the time when the tip ends reach the position immediately before being separated from the connecting plates 9a, 9b, the elastic force of the springs 26a, 26b Projecting from the first and third housing cases 21a, 21b, the branch channels 27a, 27b are closed. Accordingly, the first and third valve bodies 25a and 25b allow the discharge ports 23a and 23b and the escape holes 24a and 24b to communicate with each other in the first and third accommodation cases 21a and 21b.
- the control air discharged from the first and third control air inlets and outlets 82a and 82b via the first and third control air pipes 92a and 92b is It is introduced into the first and third housing cases 21a and 21b through the discharge ports 23a and 23b, and is exhausted to the outside through the escape holes 24a and 24b.
- the second switching mechanism 30a constituting a part of the first switching mechanism includes a second accommodation case 31a formed integrally with the cylinder 2a.
- the 4th switching mechanism 30b which comprises a part of 2nd switching mechanism is provided with the 4th storage case 31b formed integrally with the cylinder 2b.
- Control air introduction ports 32a and 32b are formed on the side surfaces of the second and fourth storage cases 31a and 31b, and control air discharge ports 33a and 33b are formed.
- a control air introduction path 91c and a control air introduction path 91d are connected to the introduction ports 32a and 32b of the second and fourth storage cases 31a and 31b, and a second control air pipe 92c and a second one are connected to the discharge ports 33a and 33b. 4 control air piping 92d is connected.
- the second and fourth storage cases 31a and 31b for example, the bottoms of the second and fourth storage cases 31a and 31b, are arranged inside and outside the second and fourth storage cases 31a and 31b.
- a relief hole 34a and a relief hole 34b communicating with each other are formed.
- the second switching mechanism 30a includes a second valve body 35a that constitutes a first valve body that reciprocates in the second housing case 31a.
- the 4th switching mechanism 30b is provided with the 4th valve body 35b which comprises the 2nd valve body which reciprocates the inside of the 4th storage case 31b.
- the second valve body 35a and the fourth valve body 35b are opposed to each other along the axial direction, specifically, the shaft portion 12 of the connecting shaft 11b, 13 is provided with a spring 36a and a spring 36b that are urged toward the contact plate 35c and the contact plate 35d.
- the tip of the second valve body 35a protrudes from the second housing case 31a toward the contact plate 35c and is arranged so as to be able to contact the contact plate 35c.
- the distal end of the fourth valve body 35b protrudes from the fourth housing case 31b toward the contact plate 35d, and is arranged so as to be able to contact the contact plate 35d.
- the tips of the second and fourth valve bodies 35a, 35b are contacted with the contact plates 35c, 35d. Contact continuously. And it is comprised so that it may be pushed in the 2nd and 4th accommodating cases 31a and 31b against the elastic force of spring 36a, 36b as it is.
- the branch channel 37a formed between the second storage case 31a and the second valve body 35a, and the branch channel 37b formed between the fourth storage case 31b and the fourth valve body 35b are:
- the circuit is opened and the introduction ports 32a, 32b communicate with the discharge ports 33a, 33b.
- the branch passages 37a and 37b are opened, the control air supplied from the control air introduction passages 91c and 91d to the second and fourth switching mechanisms 30a and 30b becomes the second control air pipe 92c and the fourth control air. It is led to the second control air inlet / outlet 83a and the fourth control air inlet / outlet 83b of the first and second switching valve mechanisms 80a and 80b through the pipe 92d.
- the second and fourth valve bodies 35a and 35b are in the separated state from the time when the tip ends of the second and fourth valve bodies 35a and 35b are separated from the contact plates 35c and 35d, the elastic force of the springs 36a and 36b.
- the branch channels 37a and 37b are closed by projecting from the second and fourth housing cases 31a and 31b. Accordingly, the second and fourth valve bodies 35a and 35b cause the discharge ports 33a and 33b and the escape holes 34a and 34b to communicate with each other within the second and fourth accommodation cases 31a and 31b.
- the control air discharged from the second and fourth control air inlet / outlets 83a and 83b via the second and fourth control air pipes 92c and 92d is It is introduced into the second and fourth housing cases 31a and 31b through the discharge ports 33a and 33b, and is exhausted to the outside through the escape holes 34a and 34b.
- the switching valve 86a of the first switching valve mechanism 80a is switched by the control air from the first and second switching mechanisms 20a and 30a to the working chamber 6a. Switch the supply of working air. Further, the switching valve 86b of the second switching valve mechanism 80b is switched by the control air from the third and fourth switching mechanisms 20b and 30b to switch the supply of the working air to the working chamber 6b.
- the switching valves 86a and 86b connect the working air introduction port 87a and the working air inlet / outlet 81a of the first valve mechanism main body 85a so that the working air has the overlapping period OP described above, and
- the working air inlet / outlet 81b of the second valve mechanism main body 85b and the working air discharge port 88b are communicated with each other, supplied to the working chamber 6a, and discharged from the working chamber 6b.
- the switching valves 86a and 86b communicate the working air, for example, between the working air inlet 87b and the working air inlet / outlet 81b of the second valve mechanism main body 85b so that the working air has the above-described overlapping period OP.
- the working air inlet / outlet 81a of the first valve mechanism body 85a and the working air discharge port 88a are connected to each other, supplied to the working chamber 6b, and discharged from the working chamber 6a.
- the first and second switching mechanisms 20a, 30a constituting the pair of first switching mechanisms and the third and fourth switching mechanisms 20b, 30b constituting the pair of second switching mechanisms are:
- the first and second switching valve mechanisms 80a and 80b are arranged as follows so that the compression process of one pump chamber 5a and the compression process of the other pump chamber 5b partially overlap each other.
- the bellows 3a and 3b are driven by switching the operation.
- FIG. 2 is a timing chart for explaining the operation of each part of the double reciprocating pump 1 according to this embodiment.
- 3 to 6 are diagrams for explaining the operation of the double reciprocating pump 1.
- FIG. In FIG. 2, the mechanical time lag in the operation of each part is not shown.
- the working air of the working fluid source is adjusted to a predetermined pressure by a regulator (not shown), for example, and is always supplied to the first and second switching valve mechanisms 80a and 80b via the air pipes 99a and 99b. Have been supplied.
- the working air is always supplied to the first to fourth switching mechanisms 20a, 30a, 20b, and 30b via the control air introduction paths 91a to 91d branched from the air pipes 99a and 99b.
- the switching valves 86a and 86b communicate the working air introduction ports 87a and 87b with the working air inlet / outlets 81a and 81b. When it is in the “ON state”. Further, when the working air inlet / outlet 81a, 81b and the working air discharge port 88a, 88b are in communication with each other, the “OFF state” is set.
- the first to fourth valve bodies 25a, 35a, 25b and 35b are introduced through the branch channels 27a, 37a, 27b and 37b.
- 32a, 22b, 32b and the discharge ports 23a, 33a, 23b, 33b are referred to as “ON state”, and when these are not communicated as “OFF state”.
- ON state the same reference numerals are given to the same constituent elements as those already described, redundant description will be omitted hereinafter.
- the switching valves 86a and 86b of the first and second switching valve mechanisms 80a and 80b are on the right side in the first and second valve mechanism bodies 85a and 85b, the bellows 3a contracts and the bellows 3b expands.
- the bellows 3a moves and contracts in the direction in which the bottom of the bellows 3a approaches the pump head 1a (hereinafter referred to as the "pump head proximity direction"), and the shaft portions 12, 12 of the coupling shafts 11a, 11b are axially moved.
- the pump head moves in the direction toward the pump head.
- the shaft portions 13 and 13 are interlocked with the coil spring 14 with a slight delay, and the connecting plate 9b interlocking with the shaft portions 13 and 13 is separated from the pump head 1a (hereinafter referred to as “pump head separating direction”). Move to).
- the bellows 3a continues to contract until it reaches the contraction limit position, and the bellows 3b continues to expand until it reaches the extension limit position. Since the switching valve 86b is on the right side in the second valve mechanism main body 85b, when the working air inlet / outlet 81b and the working air discharge port 88b communicate with each other and the bellows 3b continues to expand, The working air passes through the distribution chamber 84b of the second switching valve mechanism 80b via the second main pipe 90b and is exhausted to the outside from the working air discharge port 88b.
- the suction valve 18 a and the discharge valve 19 b are closed, and the suction valve 18 b and the discharge valve 19 a are opened. Is introduced into the pump chamber 5b and discharged from the pump chamber 5a through the discharge port 17.
- the switching valve mechanism 80a maintains the ON state
- the second switching valve mechanism 80b maintains the OFF state.
- a contact plate 35d provided on the shaft portion 13 of the connecting shaft 11b is disposed in the cylinder 2b. It abuts on the tip of the fourth valve body 35b of the switching mechanism 30b. The abutting plate 35d pushes the fourth valve body 35b as it is and retracts it into the fourth housing case 31b.
- the fourth switching mechanism 30b on the cylinder 2b side allows the introduction port 32b and the discharge port 33b to communicate with each other through the branch channel 37b while the first switching valve mechanism 80a is in the ON state, so that FIG. It becomes ON state as shown.
- the ON state of the fourth switching mechanism 30b is maintained when the fourth valve body 35b continuously contacts the contact plate 35d and the branch channel 37b opens.
- the control air from the control air introduction path 91d passes through the fourth control air pipe 92d via the branch path 37b and the second switching valve mechanism 80b. It is introduced into the fourth control air inlet / outlet 83b. Due to the pressure of the control air, the switching valve 86b moves to the left in the second valve mechanism main body 85b. Then, the working air introduction port 87b and the working air inlet / outlet port 81b communicate with each other via the small diameter portion 98b and the distribution chamber 84b, and the second switching valve mechanism 80b is turned on.
- the control air on the side of the third control air inlet / outlet 82b in the second valve mechanism main body 85b is pushed out by the switching valve 86b moved to the left side and discharged from the third control air inlet / outlet 82b. Then, the discharged control air is introduced into the third housing case 21b from the discharge port 23b of the third switching mechanism 20b disposed on the cylinder 2b side through the third control air pipe 92b, and the escape hole 24b. It is exhausted to the outside through.
- the switching valve 86b smoothly moves to the left in the second valve mechanism main body 85b.
- the second switching valve mechanism 80b is turned on at time t1 immediately after the fourth switching mechanism 30b on the cylinder 2b side is turned on.
- the working air introduction port 87b and the working air inlet / outlet port 81b communicate with each other, so that the working air supplied from the working fluid source and passed through the air pipe 99b is supplied to the second switching valve mechanism 80b. It is introduced into the working chamber 6b through the second main pipe 90b through the distribution chamber 84b of the switching valve mechanism 80b.
- the pump chamber 5b is switched from the expansion process to the compression process.
- the pump chamber 5a also maintains the compression process.
- An overlap period OP in which the compression processes of the pump chambers 5b and 5a overlap is started.
- the suction valves 18a and 18b are closed and the discharge valves 19a and 19b are opened, so that the liquid as the transfer fluid is discharged from both the pump chambers 5a and 5b via the discharge port 17.
- the pulsation is prevented.
- the coil springs 14 of the connecting shafts 11a and 11b are compressed to absorb the dimensional change between the both ends of the bellows 3a and 3b.
- the bellows 3b that has reached the expansion limit position is in the direction toward the pump head until its bottom reaches the contraction limit position on the opposite side. Shrink to move to. And the shaft parts 13 and 13 of the connecting shafts 11a and 11b similarly move in the pump head proximity direction along the axial direction.
- the bellows 3a reaches the end of the compression process and reaches the vicinity of the contraction limit position in the state after the time t1 and before the time t2. Then, the connecting plate 9a comes into contact with the distal end portion of the first valve body 25a of the first switching mechanism 20a disposed on the cylinder 2a side. The connecting plate 9a pushes the first valve body 25a as it is and moves it back into the first housing case 21a.
- the first switching mechanism 20a on the cylinder 2a side allows the introduction port 22a and the discharge port 23a to communicate with each other through the branch channel 27a while the first and second switching valve mechanisms 80a and 80b are in the ON state.
- the ON state as shown in FIG. The ON state of the first switching mechanism 20a is maintained when the first valve body 25a continuously contacts the connecting plate 9a and the branch passage 27a is opened.
- the control air from the control air introduction path 91a passes through the first control air pipe 92a via the branch path 27a and the first switching valve mechanism 80a. It is introduced into the first control air inlet / outlet 82a. Due to the pressure of the control air, the switching valve 86a moves to the left in the first valve mechanism main body 85a, and the first switching valve mechanism 80a is turned off.
- the control air on the second control air inlet / outlet 83a side in the first valve mechanism main body 85a is pushed out by the switching valve 86a that has moved to the left and discharged from the second control air inlet / outlet 83a.
- the discharged control air is introduced into the second housing case 31a from the discharge port 33a of the second switching mechanism 30a disposed on the cylinder 2a side through the second control air pipe 92c, and the escape hole 34a. It is exhausted to the outside through.
- the switching valve 86a smoothly moves to the left in the first valve mechanism main body 85a.
- the first switching valve mechanism 80a is turned off.
- the overlap period OP is provided between the time point t1 and the time point t2.
- the working air inlet / outlet 81a and the working air discharge port 88a communicate with each other, so that the working air in the working chamber 6a passes through the first main pipe 90a. It passes through the distribution chamber 84a of the first switching valve mechanism 80a and is exhausted to the outside from the working air discharge port 88a.
- the pump chamber 5a is switched from the compression process to the expansion process.
- the bellows 3a that has reached the compression limit position extends so as to move in the pump head separating direction until the bottom reaches the extension limit position on the opposite side.
- the shaft parts 12 and 12 of the connection shafts 11a and 11b similarly move in the pump head separating direction along the axial direction.
- the double reciprocating pump 1 is as shown in FIG. 3, for example. That is, the switching valves 86a and 86b of the first and second switching valve mechanisms 80a and 80b are moved to the left in the first and second valve mechanism main bodies 85a and 85b. The working air from the second switching valve mechanism 80b is supplied into the working chamber 6b through the second main pipe 90b as shown by an arrow A in FIG.
- Control air from the control air introduction passage 91d is introduced into the second valve mechanism main body 85b through the fourth control air pipe 92d and the fourth control air inlet / outlet 83b as shown by an arrow B in FIG. Is done.
- the control air in the second valve mechanism main body 85b is introduced into the third switching mechanism 20b through the third control air inlet / outlet 82b and the third control air pipe 92b as shown by an arrow C in FIG. Then, the air is exhausted from the escape hole 24b.
- the working air in the working chamber 6a is introduced into the first valve mechanism main body 85a through the first main pipe 90a and the working air inlet / outlet 81a as shown by an arrow D in FIG. 84a, the small diameter portion 98a and the working air discharge port 88a are exhausted.
- Control air from the control air introduction passage 91a is introduced into the first valve mechanism main body 85a through the first control air pipe 92a and the first control air inlet / outlet 82a as shown by an arrow E in FIG. Is done.
- the control air in the first valve mechanism main body 85a is introduced into the second switching mechanism 30a through the second control air inlet / outlet 83a and the second control air pipe 92c as shown by an arrow F in FIG. Then, the air is exhausted from the escape hole 34a.
- the bellows 3a continues to expand until reaching the expansion limit position, and the bellows 3b continues to contract until reaching the contraction limit position.
- the suction valve 18b and the discharge valve 19a are closed and the suction valve 18a and the discharge valve 19b are opened, the liquid as the transfer fluid is transferred from the suction port 16 into the pump chamber 5a. While being introduced, it is discharged from the pump chamber 5 b through the discharge port 17.
- the pump chamber 5a is in the middle of the expansion process and the pump chamber 5b is in the middle of the compression process. Therefore, as shown in FIGS.
- the switching valve mechanism 80a maintains the OFF state
- the second switching valve mechanism 80b maintains the ON state.
- the first switching mechanism 20a is in an OFF state as shown in FIG.
- the branch flow path 27a is closed and the discharge port 23a and the relief hole 24a are communicated.
- the fourth switching mechanism 30b is shown in FIG. It becomes an OFF state as shown.
- the branch channel 37b is closed, and the discharge port 33b and the relief hole 34b are communicated with each other.
- the contact plate 35c provided on the shaft portion 12 of the connecting shaft 11b is disposed on the cylinder 2a side. 2 abuts against the tip of the second valve body 35a of the switching mechanism 30a. The abutting plate 35c pushes the second valve body 35a as it is and retracts it into the second housing case 31a.
- the second switching mechanism 30a on the cylinder 2a side allows the introduction port 32a and the discharge port 33a to communicate with each other through the branch channel 37a while the second switching valve mechanism 80b is in an ON state, so that after the time point t2.
- the ON state is as shown in FIG.
- the ON state of the second switching mechanism 30a is maintained when the second valve body 35a continuously contacts the contact plate 35c and the branch passage 37a opens.
- the air is introduced into the second control air inlet / outlet 83a of the first switching valve mechanism 80a. Due to the pressure of the control air, the switching valve 86a moves to the right side in the first valve mechanism main body 85a as indicated by an arrow H in FIG. Then, the working air introduction port 87a and the working air inlet / outlet port 81a communicate with each other via the small diameter portion 98a and the distribution chamber 84a, and the first switching valve mechanism 80a is turned on.
- control air on the first control air inlet / outlet 82a side in the first valve mechanism main body 85a is pushed out by the switching valve 86a moved to the right and discharged from the first control air inlet / outlet 82a. Then, as shown by an arrow I in FIG. 4, the discharged control air passes through the first control air pipe 92a from the discharge port 23a of the first switching mechanism 20a on the cylinder 2a side in the first housing case 21a. And exhausted to the outside through the escape hole 24a.
- the switching valve 86a smoothly moves to the right in the first valve mechanism main body 85a.
- the first switching valve mechanism 80a is turned on at time t3 immediately after the second switching mechanism 30a on the cylinder 2a side is turned on.
- the working air introduction port 87a and the working air inlet / outlet port 81a communicate with each other, so that the working air supplied from the working fluid source and passed through the air pipe 99a is again in the first state.
- the switching valve mechanism 80a is introduced into the working chamber 6a through the distribution chamber 84a and the first main pipe 90a.
- the pump chamber 5a is switched from the expansion process to the compression process.
- the pump chamber 5b also maintains the compression process.
- the overlap period OP in which the compression processes of the pump chambers 5a and 5b overlap is started again. Also in the overlap period OP here, as described above, the liquid as the transfer fluid is discharged from both the pump chambers 5a and 5b, and pulsation is prevented.
- the coil spring 14 is also compressed at this time in order to absorb the dimensional change between both ends of the bellows 3a, 3b.
- the bellows 3a that has reached the expansion limit position is in the direction toward the pump head until its bottom reaches the contraction limit position on the opposite side. Shrink to move to. Then, the shaft portions 12 and 12 of the connecting shafts 11a and 11b again move in the pump head proximity direction along the axial direction.
- the bellows 3b reaches the end of the compression process and reaches the vicinity of the contraction limit position in the state after the time t3 and before the time t4. Then, the connecting plate 9b comes into contact with the tip of the third valve body 25b of the third switching mechanism 20b disposed in the cylinder 2b. The connecting plate 9b pushes the third valve body 25b as it is and moves it back into the third housing case 21b.
- the third switching mechanism 20b on the cylinder 2b side allows the introduction port 22b and the discharge port 23b to communicate with each other through the branch flow path 27b while the first and second switching valve mechanisms 80a and 80b are in the ON state.
- the ON state as shown in FIG. 2 is obtained.
- the ON state of the third switching mechanism 20b is maintained when the third valve body 25b continuously contacts the connecting plate 9b and the branch passage 27b opens.
- the control air from the control air introduction path 91b passes through the third control air pipe 92b via the branch path 27b.
- the air is introduced into the third control air inlet / outlet 82b of the second switching valve mechanism 80b.
- the switching valve 86b moves to the right side in the second valve mechanism main body 85b as indicated by an arrow K in FIG.
- the working air inlet / outlet 81b and the working air discharge port 88b communicate with each other via the small diameter portion 98b and the distribution chamber 84b, and the second switching valve mechanism 80b is turned off.
- the control air on the fourth control air inlet / outlet 83b side in the second valve mechanism main body 85b is pushed out by the switching valve 86b moved to the right and discharged from the fourth control air inlet / outlet 83b.
- the discharged control air passes through the fourth control air pipe 92d and enters the fourth housing case 31b from the discharge port 33b of the fourth switching mechanism 30b on the cylinder 2b side. It is introduced and exhausted to the outside through the escape hole 34b.
- the switching valve 86b smoothly moves to the right in the second valve mechanism main body 85b.
- the second switching valve mechanism 80b is turned off.
- the overlap period OP is provided again between time t3 and time t4.
- the working air inlet / outlet port 81b and the working air discharge port 88b communicate with each other, so that the working air in the working chamber 6b again passes through the second main pipe 90b. It passes through the distribution chamber 84b of the second switching valve mechanism 80b and is exhausted to the outside again from the working air discharge port 88b.
- the pump chamber 5b is switched from the compression process to the expansion process again.
- the bellows 3b that has reached the compression limit position extends so as to move in the pump head separation direction until the bottom reaches the extension limit position on the opposite side.
- the shaft portions 13 and 13 of the connecting shafts 11a and 11b move again in the pump head separating direction along the axial direction.
- the double reciprocating pump 1 is as shown in FIG. 6, for example. That is, the switching valves 86a and 86b of the first and second switching valve mechanisms 80a and 80b are moved to the right in the first and second valve mechanism main bodies 85a and 85b.
- the working air from the first switching valve mechanism 80a is supplied into the working chamber 6a through the first main pipe 90a as indicated by an arrow N in FIG.
- Control air from the control air introduction passage 91c is introduced into the first valve mechanism main body 85a through the second control air pipe 92c and the second control air inlet / outlet 83a as indicated by an arrow O in FIG.
- the control air in the first valve mechanism main body 85a is introduced into the first switching mechanism 20a through the first control air inlet / outlet 82a and the first control air pipe 92a as shown by the arrow P in FIG.
- the air is exhausted from the escape hole 24a.
- the working air in the working chamber 6b is introduced into the second valve mechanism main body 85b through the second main pipe 90b and the working air inlet / outlet 81b as shown by an arrow Q in FIG. 84b, the small diameter portion 98b and the working air discharge port 88b are exhausted.
- Control air from the control air introduction passage 91b is introduced into the second valve mechanism main body 85b through the third control air pipe 92b and the third control air inlet / outlet 82b as shown by an arrow J in FIG. Is done.
- the control air in the second valve mechanism main body 85b is introduced into the fourth switching mechanism 30b through the fourth control air inlet / outlet 83b and the fourth control air pipe 92d as shown by the arrow S in FIG. Then, the air is exhausted from the escape hole 34b.
- the double reciprocating pump 1 repeats the above operation after time t4. That is, by switching the supply of control air from the first to fourth switching mechanisms 20a, 30a, 20b, 30b, the first and second switching valve mechanisms 80a, 80b are operated so as to have an overlapping period OP. The pair of pump chambers 5a and 5b are driven.
- the first and second mechanical configurations are not adopted without adopting any conventional electrical configuration such as a controller or a solenoid valve.
- the switching valve mechanisms 80a and 80b and the first to fourth switching mechanisms 20a, 30a, 20b, and 30b the pump chambers 5a and 5b can be driven to have the overlap period OP.
- the cost of the entire double reciprocating pump 1 can be reduced while reducing the pulsation of the transfer fluid.
- the first to fourth switching mechanisms 20a, 30a, 20b, 30b are constituted by so-called mechanical valves, and the first and second switching valve mechanisms 80a, 80b are so-called spool valves.
- these mechanical configurations according to the present embodiment may take various other forms.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Reciprocating Pumps (AREA)
Abstract
Description
1a ポンプヘッド
2a,2b シリンダ
3a,3b ベローズ
4a,4b シャフト固定板
5a,5b ポンプ室
6a,6b 作動室
7a,7b シャフト
9a,9b 連結板
11a,11b 連結シャフト
12,13 シャフト部
14 コイルばね
20a 第1切換機構
20b 第3切換機構
30a 第2切換機構
30b 第4切換機構
80a 第1の切換弁機構
80b 第2の切換弁機構
Claims (6)
- 内部に軸方向に沿って第1の空間及び第2の空間を形成するケース部材と、
前記第1の空間及び第2の空間内において変形可能に配置されて、前記第1の空間を第1のポンプ室及び第1の作動室に仕切ると共に、前記第2の空間を第2のポンプ室及び第2の作動室に仕切る可動仕切部材と、
前記第1の作動室への作動流体の供給を切り換える第1の弁機構を備える第1の切換弁機構と、
前記第2の作動室への作動流体の供給を切り換える第2の弁機構を備える第2の切換弁機構と、
前記第1の弁機構を動作させるための制御流体の前記第1の切換弁機構への供給を切り換える第1の切換機構と、
前記第2の弁機構を動作させるための制御流体の前記第2の切換弁機構への供給を切り換える第2の切換機構とを備え、
前記第1及び第2の切換機構は、
前記第1のポンプ室の圧縮工程と前記第2のポンプ室の圧縮工程とが部分的に重複する重複期間を有するように、前記制御流体の前記第1及び第2の切換弁機構への供給を切り換える
ことを特徴とする二連往復動ポンプ。 - 前記第1及び第2の切換弁機構は、それぞれ、
内部に前記作動流体の分配室が形成され、この分配室内に前記第1又は第2の弁機構が往復動自在に配置された弁機構本体を備えた、請求項1記載の二連往復動ポンプ。 - 前記弁機構本体は、
前記作動流体源から供給される作動流体を前記分配室に導入する作動流体導入口と、
前記分配室に導入された作動流体を前記第1又は第2の作動室に排出する作動流体入出口とを備えた、請求項2記載の二連往復動ポンプ。 - 前記弁機構本体は、更に、
前記制御流体を前記弁機構本体に導入するための第1の制御流体入出口及び第2の制御流体入出口とを備える
ことを特徴とする請求項3記載の二連往復動ポンプ。 - 前記第1及び第2の弁機構は、それぞれ、
軸方向に所定間隔を空けて形成された複数の大径部及びこれら大径部間に形成された小径部を備え、
前記作動流体は、前記第1又は第2の弁機構が移動して前記小径部を介して前記作動流体導入口と前記作動流体入出口とが連通することにより前記第1又は第2の作動室に向けて排出される、請求項1記載の二連往復動ポンプ。 - 前記第1及び第2の切換機構は、それぞれ、
弁体収容ケースと、
前記弁体収容ケース内を往復動し、その先端が前記弁体収容ケースから突出して前記可動仕切部材と連動する連動部材に当接可能に配置される弁体と、
前記弁体を前記連動部材の方へ付勢する弾性部材とを備える
ことを特徴とする請求項1記載の二連往復動ポンプ。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
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US15/563,796 US10550835B2 (en) | 2015-04-07 | 2016-03-31 | Duplex reciprocating pump |
CN201680020369.6A CN107429684B (zh) | 2015-04-07 | 2016-03-31 | 双联往复运动泵 |
KR1020177031886A KR102399948B1 (ko) | 2015-04-07 | 2016-03-31 | 2연 왕복동 펌프 |
JP2017510957A JP6644059B2 (ja) | 2015-04-07 | 2016-03-31 | 二連往復動ポンプ |
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JP2015078218 | 2015-04-07 | ||
JP2015-078218 | 2015-04-07 |
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WO2016163306A1 true WO2016163306A1 (ja) | 2016-10-13 |
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PCT/JP2016/060724 WO2016163306A1 (ja) | 2015-04-07 | 2016-03-31 | 二連往復動ポンプ |
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US (1) | US10550835B2 (ja) |
JP (1) | JP6644059B2 (ja) |
KR (1) | KR102399948B1 (ja) |
CN (1) | CN107429684B (ja) |
TW (1) | TWI678467B (ja) |
WO (1) | WO2016163306A1 (ja) |
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WO2010143469A1 (ja) * | 2009-06-10 | 2010-12-16 | 株式会社イワキ | 二連往復動ポンプ |
JP2012514729A (ja) * | 2009-01-09 | 2012-06-28 | トム・エム・シモンズ | 1つまたは複数のらせん状に延びるフィーチャを有する蛇腹プランジャ、そのような蛇腹プランジャを含むポンプ、および関連する方法 |
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JP3931048B2 (ja) | 2001-05-07 | 2007-06-13 | 日本ピラー工業株式会社 | 半導体製造装置用ポンプ |
JP3542990B2 (ja) * | 2001-12-05 | 2004-07-14 | 株式会社ヤマダコーポレーション | ダイヤフラムポンプ装置 |
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2016
- 2016-03-31 JP JP2017510957A patent/JP6644059B2/ja active Active
- 2016-03-31 CN CN201680020369.6A patent/CN107429684B/zh active Active
- 2016-03-31 KR KR1020177031886A patent/KR102399948B1/ko active IP Right Grant
- 2016-03-31 US US15/563,796 patent/US10550835B2/en not_active Expired - Fee Related
- 2016-03-31 WO PCT/JP2016/060724 patent/WO2016163306A1/ja active Application Filing
- 2016-04-07 TW TW105110937A patent/TWI678467B/zh active
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JP2012514729A (ja) * | 2009-01-09 | 2012-06-28 | トム・エム・シモンズ | 1つまたは複数のらせん状に延びるフィーチャを有する蛇腹プランジャ、そのような蛇腹プランジャを含むポンプ、および関連する方法 |
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JPWO2016163306A1 (ja) | 2018-02-01 |
US10550835B2 (en) | 2020-02-04 |
JP6644059B2 (ja) | 2020-02-12 |
KR102399948B1 (ko) | 2022-05-19 |
CN107429684A (zh) | 2017-12-01 |
US20180073496A1 (en) | 2018-03-15 |
CN107429684B (zh) | 2019-04-26 |
KR20170134628A (ko) | 2017-12-06 |
TW201700863A (zh) | 2017-01-01 |
TWI678467B (zh) | 2019-12-01 |
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