KR20150028500A - Drive shaft assembly for metering pump - Google Patents

Drive shaft assembly for metering pump Download PDF

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Publication number
KR20150028500A
KR20150028500A KR20130107152A KR20130107152A KR20150028500A KR 20150028500 A KR20150028500 A KR 20150028500A KR 20130107152 A KR20130107152 A KR 20130107152A KR 20130107152 A KR20130107152 A KR 20130107152A KR 20150028500 A KR20150028500 A KR 20150028500A
Authority
KR
South Korea
Prior art keywords
curvature
piston
projection
curved
pin
Prior art date
Application number
KR20130107152A
Other languages
Korean (ko)
Inventor
조수석
Original Assignee
(주)엠앤알 하이드로텍
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 (주)엠앤알 하이드로텍 filed Critical (주)엠앤알 하이드로텍
Priority to KR20130107152A priority Critical patent/KR20150028500A/en
Publication of KR20150028500A publication Critical patent/KR20150028500A/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
    • B23P19/02—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for connecting objects by press fit or for detaching same
    • B23P19/027—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for connecting objects by press fit or for detaching same using hydraulic or pneumatic means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
    • B23P19/04—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for assembling or disassembling parts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
    • F04C15/0042—Systems for the equilibration of forces acting on the machines or pump
    • F04C15/0049—Equalization of pressure pulses
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/0021—Systems for the equilibration of forces acting on the pump
    • F04C29/0035—Equalization of pressure pulses
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2210/00—Fluid
    • F04C2210/20—Fluid liquid, i.e. incompressible
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2210/00—Fluid
    • F04C2210/22—Fluid gaseous, i.e. compressible
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2240/00—Components
    • F04C2240/30—Casings or housings
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S415/00—Rotary kinetic fluid motors or pumps
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S417/00—Pumps

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
  • Fuel-Injection Apparatus (AREA)
  • Reciprocating Pumps (AREA)

Abstract

The present invention relates to a driver shaft assembly apparatus for a metering pump, and more particularly, to a driver shaft assembly apparatus for a metering pump capable of reducing vibration and noise by reducing a friction coefficient and simplifying components.
A driver shaft assembling apparatus for a metering pump according to the present invention includes a piston assembling means, a dovetail shaft, and a piston housing. The piston assembly means includes a pin having a curved projection formed on one surface thereof with a curved surface, and a piston coupled to the other end of the pin. Wherein the driver shaft includes a plurality of curved grooves formed along the circumferential direction so as to receive the curvature projection and surround the curvature projection so as not to be detached from the curved projection, And an undercarriage formed on the side surface. The piston housing includes a plurality of cylinders formed along the circumferential direction so that the piston can be inserted and slide.
According to the present invention, an undercut is formed in the curvature groove of the driver shaft. Therefore, a curvature groove can be formed so that the curvature projection of the pin can be wrapped without being separated. Therefore, the escape plate is not required, and the pin can be inserted and separated by the undercut, so that the pin can be assembled and separated easily.

Description

Technical Field [0001] The present invention relates to a drive shaft assembly for a metering pump,

The present invention relates to a driver shaft assembly apparatus for a metering pump, and more particularly, to a driver shaft assembly apparatus for a metering pump capable of reducing vibration and noise by reducing a friction coefficient and simplifying components.

1 shows a conventional driver shaft assembly apparatus for a metering pump. 1 includes a piston assembly means 10, a driver shaft 20, a separation plate 27, and a piston housing 30. The piston assembly 30 includes a piston assembly 30,

The piston assembly means 10 comprises a pin 11 and a piston 15. The pin 11 has a spherical protrusion 12 formed at one end thereof. The piston (15) is engaged with the pin (11).

The driver shaft 20 has a plurality of spherical grooves 21 formed at one end thereof in a hemispherical shape along the circumferential direction. Thus, the spherical protrusion 12 of the pin 11 is inserted into the spherical groove 21.

Since the spherical protrusion 12 is inserted into the spherical groove 21, the entrance of the spherical groove 21 is slightly larger than the diameter of the spherical protrusion 12. Thus, the spherical protrusion 12 can be separated from the spherical groove 21.

The separation plate 27 is detachably mounted on the driver shaft 20 to prevent the spherical protrusion 12 of the pin 11 from being separated from the spherical groove 21. [

The piston housing 30 is formed with a plurality of cylinders 31 along the circumferential direction so that the piston 15 can be inserted and slide.

Thus, the piston 15 moves back and forth along the cylinder 31 of the piston housing 30. [

1 has a spherical protrusion 12 formed at one end of a pin 11 and a spherical groove 21 formed in a driver shaft 20 so that the spherical protrusion 12 is inserted into the spherical groove (21). In this case, since the contact area is wide, there is a problem that a large amount of friction is generated, and when the driver shaft assembling device operates, not only vibration but also a lot of noise are generated.

In addition, the conventional driver shaft assembly apparatus shown in Fig. 1 requires a separate plate 27 to prevent the spherical protrusion 12 from being separated from the spherical groove 21. Therefore, not only a large number of components are required but also the separation plate 27 must be separated in order to separate the pin 11 from the driver shaft 20. [

The present invention is intended to solve the above problems. It is an object of the present invention to provide a driver shaft assembling apparatus capable of reducing vibration and noise by reducing the contact area between the pin (11) and the driver shaft.

It is also an object of the present invention to provide a driver shaft assembling apparatus in which a separating plate 27 is not required and the pin 11 can be easily separated from and coupled to the driver shaft 20. [

A driver shaft assembling apparatus for a metering pump according to the present invention includes a piston assembling means, a dovetail shaft, and a piston housing. The piston assembly means includes a pin having a curved projection formed on one surface thereof with a curved surface, and a piston coupled to the other end of the pin. Wherein the driver shaft includes a plurality of curved grooves formed along the circumferential direction so as to receive the curvature projection and surround the curvature projection so as not to be detached from the curved projection, And an undercarriage formed on the side surface. The piston housing includes a plurality of cylinders formed along the circumferential direction so that the piston can be inserted and slide.

It is preferable that the curvature projection and the curvature groove are formed in line contact with each other in the driver shaft assembly apparatus for a metering pump.

According to the present invention, an undercut is formed in the curvature groove of the driver shaft. Therefore, a curvature groove can be formed so that the curvature projection of the pin can be wrapped without being separated. Therefore, the escape plate is not required, and the pin can be inserted and separated by the undercut, so that the pin can be assembled and separated easily.

In addition, according to the present invention, since the curvature groove and the curved projection are formed in line contact, the contact area can be reduced when the pin is inserted into the driver shaft. As a result, friction can be reduced and vibration and noise can be reduced.

1 is a sectional view of a conventional driver shaft assembling apparatus,
2 is a cross-sectional view of the driver shaft assembling apparatus according to the present invention,
Fig. 3 is an operational view of the driver shaft assembling apparatus shown in Fig. 2,
4 is a sectional view and a side view of the piston housing shown in Fig. 2,
Figure 5 is a cross-sectional view of the driver shaft shown in Figure 2,
6 is a side view of the driver shaft 5;

An embodiment of a driver shaft assembling apparatus according to the present invention will be described with reference to Figs. 2 to 6. Fig.

A driver shaft assembling apparatus according to the present invention includes a piston assembling means (10), a driver shaft (20), and a piston housing (30).

The piston assembly means (10) has a pin (11) and a piston (15). The pin 11 is formed with a curved projection 13 at one end thereof. The piston (15) is coupled to the other end of the pin (11).

The driver shaft 20 has a plurality of curvature grooves 23 formed at one end along the circumferential direction. At this time, the curvature groove 23 is formed to receive the curvature projection 13 and to surround the curvature projection 13 without detaching it. Therefore, the entrance of the curvature groove 23 is formed to be slightly smaller than the diameter of the curvature projection 13. [ The curvature projection 13 is not released. When the curved projection 13 is inserted into the curved groove 23, the entrance of the curved groove 23 is slightly smaller than the diameter of the curved projection 13 so that the curved groove 23 surrounds the curved projection 13. So that the curvature projection 13 is not separated from the curvature groove 23.

 On the other hand, the curvature groove 23 and the curvature projection 13 are formed so as to make line contact when they are in contact with each other. That is, the curvature grooves 23 and the curvature projections 13 have curvatures different from each other. For example, when the curved protrusions 13 are formed in a spherical shape, the curved groove 23 is formed in an elliptical shape. Alternatively, if the curved protrusions 13 are formed in an elliptic shape, the curved groove 23 is formed in a spherical shape. When the curvature projection 13 and the curvature groove 23 are in contact with each other, they make a line contact. In this case, since the curvature projection 13 and the curvature groove 23 are in line contact, the contact area thereof is small. Therefore, when the curved protrusion 13 and the curved groove 23 are in contact with each other, friction is small, so that noise and vibration can be reduced.

The undercut 24 is formed on one side of the curved groove 23 so that the curved projection 13 can be inserted into the curved groove 23 or separated from the curved groove 23. That is, the undercut 24 should be formed larger than the diameter of the curved projection 13. [ So that the curvature projection 13 can be inserted into the curvature groove 23 or separated from the curvature groove 23 through the undercut 24. That is, the undercut 24 allows the curvature projection 13 to be inserted into or separated from the curvature groove 23 since the entrance of the curvature groove 23 is smaller than the diameter of the curvature projection 13. [ The curvature projection 13 of the pin 11 can be inclined in the direction of the undercut 24 to insert or separate the curvature projection 13 into the curvature groove 23. [ Thus, the pin 11 is not separated from the curvature groove 23 in the normal operation state, but can be separated from the curvature groove 23 when tilted in the undercut 24 direction. Therefore, the present embodiment is not required to have the separation plate 27 shown in FIG. 1 by providing the undercut 24, and the curved projection 13 can be easily separated and bonded to the curved groove 23. [

The piston housing (30) is formed with a cylinder (31) so that the piston (15) is inserted along the circumferential direction so as to be able to slide.

Therefore, in the present embodiment, since the curvature projection 13 and the curved groove 23 are in line contact, the contact area can be reduced to reduce the friction, thereby reducing vibration and noise. The curved protrusion 13 can be easily separated and connected to the curved groove 23 by providing the undercut 24 so that the curved recess 23 can cover the curved protrusion 13. [

10: Piston assembly means 11: Pin
12: spherical projection 13: curvature projection
15: Piston 20: Driver shaft
21: spherical groove 23: curvature projection
24: undercut 27:
30: Piston housing 31: Cylinder

Claims (2)

A piston assembly means having a pin provided with a curved projection formed in a curved surface on one side thereof and a piston coupled to the other end of the pin;
A plurality of curved grooves formed along the circumferential direction so as to receive the curvature protrusions on one surface and to surround the curvature protrusions so as not to be detached from the curved protrusions, and a plurality of curved grooves formed on one side of the curvature grooves so that the curvature protrusions can be separated from the curvature grooves. A driver shaft having a cone,
And a piston housing having a plurality of cylinders formed along the circumferential direction so that the piston can be inserted and slide. The method according to claim 1,
Wherein the curvature projection and the curvature groove are formed in line contact with each other.
KR20130107152A 2013-09-06 2013-09-06 Drive shaft assembly for metering pump KR20150028500A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR20130107152A KR20150028500A (en) 2013-09-06 2013-09-06 Drive shaft assembly for metering pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR20130107152A KR20150028500A (en) 2013-09-06 2013-09-06 Drive shaft assembly for metering pump

Publications (1)

Publication Number Publication Date
KR20150028500A true KR20150028500A (en) 2015-03-16

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ID=53023357

Family Applications (1)

Application Number Title Priority Date Filing Date
KR20130107152A KR20150028500A (en) 2013-09-06 2013-09-06 Drive shaft assembly for metering pump

Country Status (1)

Country Link
KR (1) KR20150028500A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101583204B1 (en) * 2015-07-02 2016-01-19 (주)엠앤알 하이드로텍 Drive Shaft Production method of metering pump and thereof tool

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101583204B1 (en) * 2015-07-02 2016-01-19 (주)엠앤알 하이드로텍 Drive Shaft Production method of metering pump and thereof tool

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E902 Notification of reason for refusal
E601 Decision to refuse application