WO2016080058A1 - Pompe à diaphragme - Google Patents

Pompe à diaphragme Download PDF

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Publication number
WO2016080058A1
WO2016080058A1 PCT/JP2015/075956 JP2015075956W WO2016080058A1 WO 2016080058 A1 WO2016080058 A1 WO 2016080058A1 JP 2015075956 W JP2015075956 W JP 2015075956W WO 2016080058 A1 WO2016080058 A1 WO 2016080058A1
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WO
WIPO (PCT)
Prior art keywords
valve
fluid
cage
pump
internal space
Prior art date
Application number
PCT/JP2015/075956
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English (en)
Japanese (ja)
Inventor
憲光 浜尾
Original Assignee
株式会社Ibs
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 株式会社Ibs filed Critical 株式会社Ibs
Publication of WO2016080058A1 publication Critical patent/WO2016080058A1/fr

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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
    • F04B45/00—Pumps or pumping installations having flexible working members and specially adapted for elastic fluids
    • F04B45/04—Pumps or pumping installations having flexible working members and specially adapted for elastic fluids having plate-like flexible members, e.g. diaphragms

Definitions

  • the present invention relates to a diaphragm pump that sucks and discharges fluid by generating a positive pressure and a negative pressure inside a pump body by a diaphragm.
  • a pump is known as a device that applies pressure to a fluid in order to suck or transfer the fluid.
  • pumps There are various types of pumps, such as those that apply pressure with rotating parts, and those that apply pressure with reciprocating parts, but a diaphragm that performs reciprocating motion generates positive and negative pressure inside the pump body to supply fluid.
  • a diaphragm pump for transferring is known.
  • valves for preventing the backflow of the diaphragm pump into the pump body Conventionally known swing check valves, hammerless check valves, and wafer check valves have been known as valves for preventing the backflow of the diaphragm pump into the pump body.
  • the swing check valve has a structure in which a valve attached via a hinge is pushed by a fluid flow to open in a forward flow and closed by a fluid flow in a reverse flow.
  • a hammerless check valve is a valve attached via a spring, which is pushed by a fluid flow while resisting the urging force of the spring in a forward flow and opens in a reverse direction. The flow is closed by being pushed by the biasing force of the spring.
  • the wafer check valve has two semicircular valves attached via a hinge with a built-in spring, and the flow of fluid resists the biasing force of the spring in the forward flow. It is pushed and opened, and the reverse flow is pushed and closed by the biasing force of the spring.
  • valve since the valve has a hinge and a spring that operate according to the flow of the fluid, the hinge and the spring become fatigued due to long-term use, and the fluid may not be sucked and discharged.
  • the present invention has been made in view of the above-described problems, and can easily and reliably suck and discharge a fluid with a simple configuration, so that the diaphragm pump can be used stably over a long period of time.
  • An object of the present invention is to provide a diaphragm pump.
  • the present invention provides a pump body, a first valve provided on the inflow side of the pump body, a second valve provided on the outflow side of the pump body, and a pump body.
  • the present invention relates to a diaphragm pump including a diaphragm for sucking and discharging fluid, and a pump body sucking fluid from a first valve and discharging fluid from the second valve by the operation of the diaphragm.
  • the first valve is fixed to a first internal space, a first inflow port provided on the inflow side of the first internal space, and an outflow side of the first internal space. And a first valve that is movably provided between the first inlet and the first cage in the first internal space and has a diameter smaller than that of the first cage. Is provided.
  • the second valve has a second inner space, a second inlet provided on the inflow side of the second inner space, and a second inlet fixed to the outflow side of the second inner space. And a second valve that is movably provided between the second inlet and the second cage in the second internal space and has a smaller diameter than the second cage.
  • the first valve When the pump main body sucks fluid by the operation of the diaphragm, the first valve is in a state where the first valve is moved in contact with the position of the first cage by the pressure of the fluid to the position of the first cage.
  • the second valve On the other hand, the second valve is in a state where the second valve moves in the second internal space to the second inflow port and closes due to the pressure of the fluid.
  • the fluid flows from the outside into the first internal space of the first valve and then flows from the periphery of the first cage through the first cage into the pump body, while the fluid from the pump body enters the second space. Inflow into the second internal space of the valve.
  • the first valve when the pump body discharges the fluid by the operation of the diaphragm, the first valve is in a state where the first valve is moved to the first inflow port by the pressure of the fluid and closed.
  • the second valve is brought into contact with the second valve by moving the second internal space to the position of the second cage by the pressure of the fluid.
  • the fluid flows from the pump body into the second internal space of the second valve, passes through the second cage from the periphery of the second cage, and flows out to the outside. 1 is prevented from flowing into the pump body from the internal space.
  • the fluid can be sucked and discharged easily and reliably with a simple configuration, and thus the diaphragm pump can be used stably over a long period of time. It becomes possible.
  • first valve and the second valve are fixed in such a manner that they are simultaneously pressed toward the pump body by one fixing member. According to this, since the first valve and the second valve are simultaneously pressed toward the pump main body by the one fixing member, the airtightness at the connection portion with the pump main body can be easily and reliably achieved with a simple configuration. Can be secured.
  • each of the first valve and the second valve includes a protruding portion protruding radially outward, and the upper surface of each protruding portion is simultaneously pressed toward the pump body by the fixing member. It is preferably fixed. According to this, since the first valve and the second valve are provided with the protrusions pressed against the fixing member, they are easily and surely pressed toward the pump body.
  • the fixing member is screwed to the pump body between the first valve and the second valve. According to this, since the fixing member is screwed to the pump body between the first valve and the second valve, the first valve and the second valve are pressed evenly toward the pump body.
  • the pump body when the pump body sucks fluid by the operation of the diaphragm, the fluid flows from the outside into the inner space of the first valve and then passes through the first cage from the periphery of the first cage. While flowing into the pump body, the pump body is prevented from flowing into the internal space of the second valve.
  • the pump main body discharges fluid by the operation of the diaphragm, the fluid flows from the pump main body into the inner space of the second valve, and flows out from the periphery of the second cage to the outside through the second cage. On the other hand, it is prevented from flowing into the pump body from the internal space of the first valve.
  • the diaphragm pump can be used stably over a long period of time.
  • the diaphragm pump 1 includes a pump body 2, a first valve 3 provided on the inflow side of the pump body 2, and a second valve 4 provided on the outflow side of the pump body 2. And a diaphragm 5 for sucking and discharging fluid to the pump body 2 and an operating mechanism 6 for operating the diaphragm 5.
  • the pump body 2 is a stainless steel device that sucks fluid from the first valve 3 and discharges fluid from the second valve 4. As shown in FIGS. 1 and 2, the pump body 2 has a cylindrical appearance, and includes a pump head 21, a head gasket 22 provided on the lower side of the pump head 21, and a head gasket 22 below.
  • the head holder 23 is provided on the side.
  • the pump head 21 is provided with a recess 211 having a circular cross section on the lower surface. As will be described later, the pump head 21 is provided with a diaphragm 5 on the lower side, and a pump chamber C is formed with the concave portion 211 as a top wall and a side wall, and the diaphragm 5 as a bottom. Further, the pump head 21 is provided with holes 212 and 213 penetrating into the recess 211 on the upper surface.
  • the head gasket 22 is an annular sealing material that seals the peripheral portions of the pump head 21 and the head holder 23 so as to be sandwiched between the pump head 21 and the head holder 23, and is made of a flexible synthetic resin. .
  • the head holder 23 is a cylindrical member and is a fixing member that fixes the pump head 21 and the diaphragm 5.
  • the head holder 23 is provided with a screw groove on the peripheral edge of the upper surface, and the screw 231 is screwed into the screw groove so as to penetrate the pump head 21 and the diaphragm 5, thereby fixing the pump head 21 and the diaphragm 5. ing.
  • the first valve 3 is a pipe-like stainless steel valve that allows a fluid to flow into the pump body 2, and as shown in FIG. 3, an upper pipe 31 provided on the upper side and a lower pipe provided on the lower side. And a side pipe 32.
  • the first internal space S1 is formed by connecting the upper pipe 31 and the lower pipe 32 in the length direction.
  • the upper pipe 31 includes a small-diameter small portion 311 and a projecting portion 312 projecting in the radial direction of the small-diameter portion 311 below the small-diameter portion 311.
  • the protrusion 312 is provided with a fitting recess 313 into which the lower pipe 32 is fitted on the lower surface.
  • the fitting recess 313 is provided with a recess 314 having a small diameter on the upper surface.
  • the lower pipe 32 includes a small-diameter portion 321 having a small diameter and a protruding portion 322 projecting in the radial direction of the small-diameter portion 321 above the small-diameter portion 321.
  • the protrusion 322 is provided with a recess 323 on the upper surface.
  • the upper part of the lower pipe 32 is fitted into the fitting recess 313 of the upper pipe 31, and a first internal space S ⁇ b> 1 composed of the recess 314, the fitting recess 313, and the recess 323 is formed.
  • a first inflow port 315 is provided on the upper surface of the concave portion 314 on the upstream side, and a first cage 33 is provided on the downstream side.
  • the first cage 33 is formed in a mesh plate shape through which fluid can pass, and is fixed in such a manner as to be sandwiched between the upper surface of the fitting recess 313 and the upper surface of the lower pipe 32.
  • a first valve 34 is provided between the first inflow port 315 and the first cage 33.
  • the first valve 34 is formed in a plate shape having a smaller diameter than the first cage 33 and moves between the first inlet 315 and the first cage 33 in the fluid flow direction. Can be done.
  • the lower end portion of the lower pipe 32 is inserted into the hole 212 of the pump main body 2 through an O-ring 35 made of a fluororesin. For this reason, the lower end of the first valve 3 is opened toward the recess 211 of the pump head 21, so that the fluid can flow into the pump chamber C of the pump body 2.
  • the first valve 3 has the first valve 34 in the first internal space S1 due to the fluid pressure. Is moved to the position of the cage 33 and brought into contact. For this reason, the fluid flows from the outside into the first internal space S ⁇ b> 1 of the first valve 3, and then flows from the periphery of the first cage 33 through the first cage 33 into the pump body 2.
  • the first valve 3 causes the first valve 34 to pass through the first internal space S1 by the pressure of the fluid. It moves to 1 inflow port 315, and it will be in the state closed. For this reason, the fluid is prevented from flowing into the pump body 2 from the first internal space S1 of the first valve 3.
  • the second valve 4 is a pipe-like stainless steel valve that allows fluid to flow out from the pump body 2, and as shown in FIG. 3, an upper pipe 41 provided on the upper side and a lower pipe provided on the lower side. And a side pipe 42.
  • an upper pipe 41 and a lower pipe 42 are connected in the length direction to form a second internal space S2.
  • the upper pipe 41 includes a small-diameter small portion 411 and a projecting portion 412 projecting in the radial direction of the small-diameter portion 411 below the small-diameter portion 411. Yes.
  • the protrusion 412 is provided with a fitting recess 413 into which the lower pipe 42 is fitted on the lower surface.
  • the fitting recess 413 is provided with a recess 414 having a small diameter on the upper surface.
  • the lower pipe 42 includes a small-diameter portion 421 having a small diameter, and a protruding portion 422 that protrudes in the radial direction of the small-diameter portion 421 above the small-diameter portion 421.
  • the protrusion 422 is provided with a recess 423 on the upper surface.
  • the second internal space S2 has a second inflow port 424 on the lower surface of the concave portion 423 on the upstream side, and a second cage 43 is provided on the downstream side.
  • the second cage 43 is formed in a mesh plate shape through which fluid can pass, and is fixed in such a manner as to be sandwiched between the upper surface of the fitting recess 413 and the upper surface of the lower pipe 42.
  • a second valve 44 is provided between the second inlet 424 and the second cage 43.
  • the second valve 44 is formed in a plate shape smaller in diameter than the second cage 43 and moves between the second inlet 424 and the second cage 43 in the fluid flow direction. Can be done.
  • the lower end portion of the lower pipe 42 is inserted into the hole 213 of the pump body 2 through an O-ring 45 made of fluororesin. For this reason, the lower end of the second valve 4 is opened toward the recess 211 of the pump head 21, and the fluid can flow out from the pump chamber C of the pump body 2.
  • the second valve 4 has the second valve 44 in the second internal space S2 due to the fluid pressure. Is moved to the second inlet 424 and closed. For this reason, the fluid is prevented from flowing from the pump body 2 into the second internal space S2 of the second valve 4.
  • the second valve 44 causes the second internal space S2 to pass through the second internal space S2 by the fluid pressure. It moves to the position of the cage 43 and comes into contact. For this reason, the fluid flows into the second internal space S2 of the second valve 4 from the pump body 2, and flows out from the periphery of the second cage 43 to the outside through the second cage 43.
  • the first valve 3 and the second valve 4 are fixed in such a manner that they are simultaneously pressed toward the pump body 2 by one fixing member 7.
  • the fixing member 7 is a plate-like member, and pipe insertion holes 71 and 72 through which the upper pipes 31 and 41 are inserted are provided at intervals in the length direction.
  • a screw insertion hole 73 is provided at an intermediate position of 72.
  • the pump body 2 is provided with a protrusion 214 at the center of the upper surface of the pump head 21, and a screw groove is provided on the upper surface of the protrusion 214.
  • the upper pipes 31 and 41 are inserted into the pipe insertion holes 71 and 72 of the fixing member 7, inserted into the screw insertion holes 73, and formed on the upper surface of the projecting portion 214 of the pump body 2.
  • the upper surface of the protruding portion 312 of the first valve 3 and the upper surface of the protruding portion 412 of the second valve 4 are fixed to the pump body by the fixing member 7 by being screwed with the screw 8 screwed into the provided screw groove. It is fixed in such a manner that it is simultaneously pressed toward 2.
  • the airtightness at the connection portion with the pump main body 2 with a simple configuration. can be secured easily and reliably.
  • the first valve 3 and the second valve 4 include the protruding portions 312 and 412 that are pressed against the fixing member 7, they can be easily and reliably pressed toward the pump body 2.
  • the fixing member 7 is screwed to the pump main body 2 between the first valve 3 and the second valve 4, the first valve 3 and the second valve 4 are equally directed toward the pump main body 2. Can be pressed.
  • first valve 3 and the second valve 4 have the same structure except for the difference between the positions of the valves 34 and 44 above and below the gauges 33 and 43. Therefore, one valve 3 (4 ) And changing the position of the valve 34 (44) relative to the cage 33 (43), it is possible to easily switch to the other valve 4 (3).
  • the diaphragm 5 includes a film body 51 that is a circular film formed of a fluororesin, a stainless-made top plate 52 provided at the center of the upper surface of the film body 51, and a lower surface of the film body 51. And a stainless steel bottom plate 53 provided at the center.
  • the diaphragm 5 is attached to the pump body 2 in such a manner that the peripheral portion is sandwiched between the pump head 21 and the head gasket 22 of the pump body 2 as described above.
  • the diaphragm 5 is provided with a hole 55 in the central portion 54 so as to penetrate the film body 51, the top plate 52, and the bottom plate 53 in the thickness direction.
  • the diaphragm 5 has a stainless steel set screw 56 inserted into the hole 55 from above, and the set screw 56 is screwed into the small end portion 632 of the connecting rod 63 of the operating mechanism 6 so that the central portion 54 is at the bottom. It is connected to a connecting rod 63 provided below via a gasket 57.
  • the diaphragm 5 when the pump body 2 sucks the fluid, as shown in FIG. 3, the diaphragm 5 has the central portion 54 pulled downward by the connecting rod 63 and bent downward, so that the diaphragm 5 The volume in the pump chamber C as the bottom is increased to generate a negative pressure in the pump chamber C, thereby causing the fluid to generate a pressure toward the pump body 2 side.
  • the diaphragm 5 is a pump whose bottom is the diaphragm 5 as the central portion 54 is pushed upward by the connecting rod 63 and bent upward.
  • the volume in the chamber C is reduced to generate a positive pressure in the pump chamber C, and a pressure is generated in the fluid from the pump body 2 side.
  • the operating mechanism 6 includes a motor 61 having a rotating shaft 611, an eccentric member 62 attached to the rotating shaft 611 of the motor 61, an eccentric member 62, and the diaphragm 5.
  • a connecting rod 63 connected to the motor, and a mounting foot 64 for fixing the motor 61 and the pump body 2 to each other.
  • the eccentric member 62 is a cylindrical member, and is attached to the rotating shaft 611 at a position shifted from the center.
  • the connecting rod 63 includes a large end 631 that is a lower end, a small end 632 that is an upper end, and a stem 633 that connects the large end 631 and the small end 632.
  • an eccentric member 62 is inserted through a bearing metal into a hole provided in the center, and in the small end portion 632, a set screw 56 is screwed into a screw hole provided on the upper surface. This is connected to the central portion 54 of the diaphragm 5. Since the center of the large end 631 performs a circular motion while the connecting rod 63 maintains the posture in which the small end 632 is positioned at the upper end by the rotation of the eccentric member 62, the small end 632 moves in a circular motion. Move up and down according to the up and down direction.
  • the diaphragm 5 is pulled downward by the connecting rod 63 and bent in the lower direction, so that the volume in the pump chamber C with the diaphragm 5 as the bottom increases, and the diaphragm 5 has a negative pressure in the pump chamber C. To generate a pressure in the fluid toward the pump body 2.
  • the first valve 3 is brought into contact with the first valve 34 moved to the position of the cage 33 through the first internal space S ⁇ b> 1 by the pressure of the fluid. For this reason, the fluid flows from the outside into the first internal space S ⁇ b> 1 of the first valve 3, and then flows from the periphery of the first cage 33 through the first cage 33 into the pump body 2.
  • the second valve 4 is in a state where the second valve 44 is moved to the second inflow port 424 and closed by the fluid pressure due to the fluid pressure. , The fluid is prevented from flowing from the pump body 2 into the second internal space S2 of the second valve 4.
  • the diaphragm 5 is pushed upward by the connecting rod 63 and bent upward so that the volume in the pump chamber C with the diaphragm 5 at the bottom is reduced and positive pressure is generated in the pump chamber C.
  • pressure is generated in the fluid from the pump body 2 side.
  • the first valve 3 is in a state where the first valve 34 is moved to the first inflow port 315 by the fluid pressure and closed. It becomes. For this reason, the fluid is prevented from flowing into the pump body 2 from the first internal space S1 of the first valve 3.
  • the second valve 44 is in a state in which the second valve 44 moves through the second internal space S ⁇ b> 2 to the position of the second cage 43 and contacts with the pressure of the fluid. .
  • the fluid flows into the second internal space S2 of the second valve 4 from the pump body 2, and flows out from the periphery of the second cage 43 to the outside through the second cage 43.
  • the diaphragm pump can be used stably over a long period of time.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)

Abstract

L'invention porte sur une pompe à diaphragme, laquelle pompe est configurée de telle sorte qu'un corps de pompe (2) aspire vers l'intérieur un fluide à partir d'une première vanne (3) par le fonctionnement d'un diaphragme (5), et refoule le fluide à partir d'une seconde vanne (4). La première vanne (3) comporte : un espace interne (S1); une ouverture d'entrée (315) réalisée sur le côté d'entrée de l'espace interne (S1); une première cage (33) fixée au côté de sortie de l'espace interne (S1); et une première vanne (34) se déplaçant à l'intérieur de l'espace interne (S1) entre l'ouverture d'entrée (315) et la première cage (33), et ayant un diamètre inférieur à celui de la première cage (33). La seconde vanne (4) comporte un espace interne (S2); une ouverture d'entrée (424) réalisée sur le côté d'entrée de l'espace interne (S2); une seconde cage (43) fixée au côté de sortie de l'espace interne (S2); et une seconde vanne (4) se déplaçant à l'intérieur de l'espace interne (S2) entre l'ouverture d'entrée (424) et la seconde cage (43), et ayant un diamètre inférieur à celui de la seconde cage (43).
PCT/JP2015/075956 2014-11-20 2015-09-14 Pompe à diaphragme WO2016080058A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2014235219A JP2016098689A (ja) 2014-11-20 2014-11-20 ダイヤフラムポンプ
JP2014-235219 2014-11-20

Publications (1)

Publication Number Publication Date
WO2016080058A1 true WO2016080058A1 (fr) 2016-05-26

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2015/075956 WO2016080058A1 (fr) 2014-11-20 2015-09-14 Pompe à diaphragme

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JP (1) JP2016098689A (fr)
WO (1) WO2016080058A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58131482A (ja) * 1982-01-29 1983-08-05 Matsushita Electric Ind Co Ltd リフト型逆止弁
JPH09195945A (ja) * 1996-01-03 1997-07-29 Buechi Lab Tech Ag 真空メンブレインポンプのヘッド及び真空メンブレインポンプ
EP1953387A2 (fr) * 2007-01-31 2008-08-06 Gardner Denver Thomas GmbH Pompe à déplacement positif pour transporter un fluide avec adaptation automatique pour la compressibilité du fluide

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6349575Y2 (fr) * 1984-11-26 1988-12-20

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58131482A (ja) * 1982-01-29 1983-08-05 Matsushita Electric Ind Co Ltd リフト型逆止弁
JPH09195945A (ja) * 1996-01-03 1997-07-29 Buechi Lab Tech Ag 真空メンブレインポンプのヘッド及び真空メンブレインポンプ
EP1953387A2 (fr) * 2007-01-31 2008-08-06 Gardner Denver Thomas GmbH Pompe à déplacement positif pour transporter un fluide avec adaptation automatique pour la compressibilité du fluide

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