KR100792788B1 - Pressure recovery mechanism using hydrostatic power transmission - Google Patents

Abstract

A pressure recovery mechanism using hydrostatic power transmission for pumping fluid into discharged fluid to save energy is provided to drive a power generating part by discharged fluid and simultaneously pump fluid in a pumping part, thereby utilizing abandoned pressure as auxiliary power to reduce energy consumption. A pressure recovery mechanism using hydrostatic power transmission for pumping fluid with discharged fluid to save energy includes a rotation shaft(5) mounted in a cylindrical housing(1) axially, and a swash plate(4) mounted in the middle of the rotation shaft slantingly. A power generation part(2) is mounted at a side of the swash plate for rotating the swash plate by pressure of introducing fluid to rotate the rotation shaft. A pumping part(3) is mounted at the other side of the swash plate to reciprocally move by the rotation of the rotation shaft to pump the fluid. A uniform velocity joint(6) is joined with a spline of the rotation shaft and surface-contacts the swash plate for driving the swash plate to rotate, so as to transmit power conversion between the reciprocating motion of the power generation part and the pumping part and the rotation motion of the rotation shaft, wherein the power generating part and the pumping part move in association by the swash plate to carry out the power generation and pumping simultaneously.

Description

Pressure Recovery Mechanism using Hydrostatic Power Transmission

1 is a cross-sectional view showing an example of the pressure recovery mechanism according to the present invention,

2 is a perspective view showing an example of a cylinder block installed in the pressure recovery mechanism according to the present invention;

Figure 3 is a perspective view showing an example of the swash plate and the constant velocity constant joint is installed in the pressure recovery mechanism according to the present invention.

<Code Description of Main Parts of Drawing>

1: housing

2: power generating unit

  21: cylinder block

  22: piston

  23: loading

  24: power generating unit cover

  25: valve plate

3: pumping part

  31: cylinder block

  32: piston

  33: loading

  34: pumping part cover

  35: valve plate

4: swash plate

  41: shaft hole 42, 43: spherical groove

  411: spiral groove

5: axis of rotation

6: constant velocity joint

  61: inner ring 611: shaft ball 612: spherical groove

  62: ball

The present invention relates to a pressure recovery mechanism using hydrostatic power transmission, and more particularly, a rotating shaft is rotated by a fluid installed in a filtration device or a desalination device that pumps a fluid using a high pressure pump and discharges the pumped fluid. Composed in conjunction with the power generating unit and the power generating unit to form a pumping unit for pumping the fluid integrally to the pressure recovery mechanism using hydrostatic power transmission to reduce energy by allowing the fluid to be pumped back to the discharged fluid. It is about.

Typically, a filtration device for filtering purified seawater or waste water (hereinafter referred to as "waste water") to produce purified water includes pumping means for pumping waste water, and in this filtration device, some of the waste water pumped out is a predetermined filtration means. It is filtered through and the remaining waste water is discharged as it is concentrated.

The concentrated wastewater discharged from this filtration device is pumped by a high pressure pump as described above to maintain a fairly large pressure.

However, the high pressure waste water is discharged as it is, energy is consumed, and many kinds of pressure recovery mechanisms have been developed and disseminated as a means to compensate for these disadvantages.

Such pressure recovery mechanisms include turbo type such as pelton and francis, but these have low efficiency and cannot be used in small devices.

The present invention has been invented to solve the above problems, the fluid generating part for rotating the rotary shaft by the discharged fluid, and the pumping unit for pumping the fluid by configuring in conjunction with the power generating unit as a fluid discharged It is an object of the present invention to provide a pressure recovery mechanism using hydrostatic power transmission that can save energy by allowing the fluid to be pumped again.

Pressure recovery mechanism using the axial piston hydrostatic power transmission in accordance with the present invention for achieving the above object is provided with a rotating shaft which is installed in the axial direction long inside the cylindrical housing for rotational movement; A swash plate inclined at an interruption of the rotating shaft; A power generation unit provided at one side of the swash plate to rotate the swash plate by rotating the swash plate by the pressure of the fluid flowing in; A pumping part provided at the other side of the swash plate to pump the fluid by reciprocating by the rotation of the swash plate; And a constant velocity joint coupled to the spline of the rotary shaft and in surface contact with the swash plate to cause the swash plate to rotate so as to mediate power conversion between the reciprocating motion of the power generating portion and the pumping portion and the rotational movement of the rotary shaft. It is done.

Pressure recovery mechanism using hydrostatic pressure power transmission according to the present invention, the power generating unit is coupled to the spline formed on the rotating shaft to rotate, the cylinder block having a plurality of cylinder chambers; Pistons provided in respective cylinder chambers formed in the cylinder block; One end of the piston rod rotatably coupled to a spherical groove formed on one side of the swash plate, and the other end of the piston rod rotatably fitted to the spherical groove formed on the piston; And a power generating part cover fixedly installed at one end of the housing and formed with a plurality of flow paths corresponding to the cylinder chambers of the respective cylinder blocks, wherein the pumping part is coupled to the spline formed on the rotating shaft and rotates. A cylinder block having a cylinder seal; Pistons provided in respective cylinder chambers formed in the cylinder block; One end of the piston rod rotatably coupled to the spherical groove formed on one side of the swash plate, and the other end of the piston rod rotatably fitted to the spherical groove formed on the piston; And a pumping part cover fixedly installed at one end of the housing and having a plurality of flow paths formed corresponding to the cylinder chambers of the respective cylinder blocks.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily understand and reproduce.

1 is a cross-sectional view showing an example of a pressure recovery mechanism according to the present invention, Figure 2 is a perspective view showing an example of a cylinder block installed in the pressure recovery mechanism according to the present invention, Figure 3 is a pressure recovery mechanism according to the present invention Fig. 1 is a perspective view showing one example of a swash plate and a constant velocity joint to be installed in the same.

As shown in the drawing, the pressure recovery mechanism according to the present invention constitutes a power generating unit 2 and a pumping unit 3 on both sides of the swash plate 4 provided at the middle of the rotary shaft 5 to supply pressure to the fluid. By the power generation unit 2 and the pumping unit (3) can be interlocked.

That is, the pressure recovery mechanism according to the present invention includes a rotary shaft 5 which is installed in the cylindrical housing 1 in the axial direction long and rotates, a swash plate 4 which is inclined at the interruption of the rotary shaft 5, and the The power generating unit 2 is provided on one side of the swash plate 4 to rotate the swash plate by the pressure of the fluid flowing therein, and is provided on the other side of the swash plate 4 to rotate the swash plate. And a pumping part 3 for pumping fluid by reciprocating motion, and a spline 54 of the rotary shaft 5 and in contact with the swash plate 4 so that the swash plate rotates so that the power generating part 2 ) And a constant velocity joint (6) for mediating power conversion between the reciprocating motion of the pumping part (3) and the rotational motion of the rotary shaft (5). And pumping unit 3 can be interlocked to generate power and pumping action at the same time. have.

The power generating unit 2 is coupled to the spline 52 formed on the rotating shaft 5 as a means for rotating the rotating shaft using the pressure of the fluid flowing in, the cylinder block 21 having a plurality of cylinder seals ), A piston 22 provided in each cylinder chamber formed in the cylinder block 21, and one end portion is rotatably coupled to a spherical groove formed on one side of the swash plate 4, the other end is the piston 22 The piston rod 23 installed to be rotatably fitted in the spherical groove formed in the center), and a plurality of flow paths 241 are fixedly installed at one end of the housing and formed to correspond to the cylinder chambers of the respective cylinder blocks 21. And a sub cover 24.

The pumping unit 3 also has the same configuration as the power generating unit 2, except that the piston 22 configured in the power generating unit 2 rotates by reciprocating by the pressure of the fluid to rotate the swash plate. The piston 32 constituting the part 3 serves to transport the fluid.

Hereinafter, each component of the power generating unit 2 will be described, and description of these components replaces the description of the components constituting the pumping unit 3.

The cylinder block 21 is splined to the rotary shaft 5 so as to rotate simultaneously with the rotary shaft 5, and the piston 22 including the swash plate 4 as a means for rotating the cylinder block 21. The piston rod 23 and the constant velocity joint 6 mentioned later are used.

The constant velocity joint 6 is coupled to the spline 54 formed on the rotation shaft 5, and has an inner ring 61 having a plurality of spherical grooves 612 formed on an outer circumferential surface thereof, and a spherical groove formed on the inner ring 61. The ball 62 is inserted into the 612 and the outer side is opposed to the spiral groove 411 formed to be inclined to the inner surface of the shaft hole 41 formed in the center of the swash plate (4).

The swash plate 4 forms an angle formed by the rotation shaft 5 from 6 degrees to 45 degrees as shown in the drawing, so that the interaction between the power generating unit 2 and the pumping unit 3 can be more effectively performed. That is, when the angle of the swash plate 4 is less than 20 degrees, the reciprocating distance of the piston 32 of the pumping portion 3 driven by the driving of the power generating portion 2 is small, the pumping efficiency is lowered, more than 45 degrees In the configuration, when the swash plate 4 is pulled or pushed, an excessive force is applied to the piston rod 23 so that the operation is not made smoothly.

On the inner wall of the cylinder chamber formed in the cylinder block 21, a coating layer 211 is formed to reduce the friction with the piston 22 and to prevent the leakage of the fluid so that the piston 22 and the cylinder block 21 can be removed from the friction. Protect and prevent fluid leakage.

A valve plate 25 is further provided between the cylinder block 21 and the cover 24.

The valve plate 25 is a means for regulating the flow of fluid between the cylinder seal formed in the cylinder block 21 and the flow path formed in the cover 24, and a number of passing holes 251 corresponding to each cylinder seal are formed.

The coating layer 211 may be formed using a wear resistant material such as chromium.

Both ends of the piston rod 23 is formed in a spherical shape, as shown, the groove formed in the piston 22 to be inserted and the groove formed in the swash plate 4 is also spherical.

The operation of the pressure recovery mechanism using hydrostatic power transmission configured as described above will be described below.

The passive force recovering rider of the present invention generates the power for rotating the rotary shaft 5 and the reciprocating force for driving the pumping unit 3 in the power generating unit 2.

That is, when the piston 22 provided in each cylinder chamber formed in the cylinder block 21 reciprocates by the fluid supplied through the flow path 241 formed in the power generating part cover 24, one side of the swash plate 4 It is pulled to the power generating section 2 side and the other side is pushed.

At this time, the piston rods 33 constituting the pumping unit 3 configured on the opposite side of the swash plate 4 move in the same direction as the piston rods 23 constituting the power generating unit 2 to the cylinder block 31. The fluid introduced into the formed cylinder chamber is pushed into the flow path 341.

In addition, in this process, the swash plate (4) is the swash plate (4) because the spiral groove 411 formed inclined with the central axis on the inner wall of the shaft hole 41 in the center is slid along the ball 62 formed in the constant velocity joint (6) ) Rotates in either direction, and this rotation causes the rotation shaft 5 to rotate.

That is, the fluid flowing into each cylinder chamber of the cylinder block 21 constituting the through-flow generating unit 2 is sequentially introduced, so that each piston 22 sequentially moves in any one direction, such a piston 22 The sequential movement of) rotates the swash plate 4 in a constant direction and simultaneously operates the piston 32 constituting the pumping part 3 so that the introduced fluid is discharged to the outside.

While the invention has been described with reference to the preferred embodiments, many modifications and variations are possible without departing from the scope and spirit of the invention as set forth by the claims below.

As described in detail above, the present invention can obtain power by operating the power generating unit using the fluid discharged from the predetermined filtering device, and at the same time the power is discharged by using the fluid discharged by configuring the fluid to be pumped from the pumping unit By allowing to recover the discarded pressure can be used as an auxiliary power to reduce the waste of energy or increase the efficiency.

While the present invention has been described with reference to the accompanying drawings, it will be apparent to those skilled in the art that many various obvious modifications are possible without departing from the scope of the invention from this description. Accordingly, the invention can only be construed limited by the words of the appended claims.

Claims (7)

A rotating shaft 5 installed in the axial direction long in the cylindrical housing 1 and rotating; A swash plate 4 inclined at an interruption of the rotating shaft 5; A power generation unit 2 provided on one side of the swash plate 4 to rotate the swash plate by the pressure of the fluid flowing therein to rotate the rotating shaft 50; A pumping part 3 provided on the other side of the swash plate 4 to reciprocate by rotation of the swash plate to pump the fluid; It is coupled to the spline 54 of the rotary shaft 5 and is in surface contact with the swash plate 4 to cause the swash plate to rotate so that the reciprocating motion of the power generating unit 2 and the pumping unit 3 and the rotary shaft 5 Pressure recovery mechanism using hydrostatic pressure power transmission, characterized in that it comprises a constant velocity joint (6) for mediating the power switching between the rotational movement of the. The method of claim 1, wherein the power generator 2 A cylinder block 21 coupled to the spline 52 formed on the rotating shaft 5 and rotating, the cylinder block 21 having a plurality of cylinder seals; Pistons 22 provided in respective cylinder chambers formed in the cylinder block 21; One end of the piston rod 23 rotatably coupled to a spherical groove formed on one side of the swash plate 4, and the other end of the piston rod 23 rotatably fitted to a spherical groove formed on the piston 22; It is fixed to one end of the housing and using a hydrostatic power transmission characterized in that it comprises a power generating section cover 24 formed with a plurality of flow paths 241 to correspond to the cylinder chamber of each cylinder block 21 Pressure recovery mechanism. The pumping unit (3) according to claim 1 A cylinder block 31 coupled to the spline 53 formed on the rotary shaft 5 and rotating, the cylinder block 31 having a plurality of cylinder seals; Pistons (32) provided in each cylinder chamber formed in said cylinder block (31); One end of the piston rod 33 rotatably coupled to a spherical groove formed on one side of the swash plate 4, and the other end of the piston rod 33 rotatably fitted to a spherical groove formed on the piston 32; Pressure using hydrostatic power transmission, characterized in that it comprises a pumping part cover 34 fixedly installed at one end of the housing and formed with a plurality of flow paths 341 corresponding to the cylinder chambers of the respective cylinder blocks 21. Recovery mechanism. 4. The constant velocity joint 6 according to claim 2 or 3 An inner ring 61 coupled to the spline 54 formed on the rotation shaft 5 and having a plurality of spherical grooves 612 formed on an outer circumferential surface thereof; The ball 62 is inserted into the spherical groove 612 formed in the inner ring 61 and the outside thereof is opposed to the spiral groove 411 formed to be inclined to the inner surface of the shaft hole 41 formed in the center of the swash plate 4. Pressure recovery mechanism using hydrostatic power transmission, characterized in that configured by. 5. The pressure recovery using hydrostatic power transmission of claim 4, wherein a coating layer is further formed on an inner wall of the cylinder chamber formed in the cylinder block 31 to reduce friction with the piston 22 and prevent leakage of the fluid. Instrument. 6. The pressure recovery mechanism according to claim 5, wherein the angle formed by the swash plate (4) and the rotating shaft (5) is 6 to 45 degrees. delete

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