KR101406286B1 - Using an eccentric rotary piston pump - Google Patents

Abstract

The present invention relates to a pump using an eccentric rotary piston. The pump includes: a spur gear rotated by an external driving force; a spur gear opposite to the spur gear; a transmission gear transmitting the driving force from the spur gear to the other spur gear with the pair of spur gears meshed with each other to rotate in a different direction; a shaft connected to the opposite spur gears and rotating in the same direction as the rotation direction of the spur gear; and pistons connected to the shaft and eccentrically rotated by operation of the meshed spur gears. A key connecting each piston is slid along a key groove so that the piston rotates about an axis of a cylinder chamber. When the piston rotates about the axis of the cylinder chamber, no gap is formed, and the piston is eccentrically operated without forming a clearance more than the necessary amount. Also, the noise and vibration are minimized at the operation of the pump, and the suction force and the discharge force of the fluid are increased.

Description

[0001] The present invention relates to a pump using an eccentric rotary piston,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pump using an eccentric rotary piston,

A spur gear which receives external power and rotates; and a spur gear which transmits rotation force of the spur gear to a spur gear of the other side by using a power transmission gear so as to make the rotational directions of the corresponding spur gears the same, The present invention relates to a pump using an eccentric rotary piston having a shaft for connecting the shaft and the shaft so that the shaft can revolve in the same direction as the rotation direction of the spur gear.

Conventional general pumps are mainly designed to rotate a wing or gear type or a screw type or cam type impeller in place in a pump body so as to perform a fluid delivery operation. The impeller has a long moving distance per impinging stroke of the impeller, The contact area between the impeller and the discharge fluid is very large, and the pump is in vigorous contact with the vortex. Therefore, the power is wasted and the pump has a short life span due to a large frictional heat and wear phenomenon.

In addition, these general pumps have a specific complex impeller and impeller chamber structure, which have a problem in that they are limited in design and limited in use.

For example, Korean Patent Publication No. 91-4769 and Japanese Patent Application No. 63-126511 disclose a rotary type compressor. Since the compressor is designed to perform the suction and discharge action of the fluid only by the eccentric revolution movement of one circular rotor A valve mechanism for preventing fluid back flow from the discharge port at the time of suction stroke of the rotor and a relatively thin blade structure having a low pump efficiency due to a long moving distance of the rotor necessary for achieving a complete suction / It is difficult to operate at a high pressure and a high speed over a certain level, and the service life is short.

In addition, the main pump of the type disclosed in Korean Patent Publication No. 90-3682 and Japanese Patent Application No. 61-178289 also has a disadvantage similar to the aforementioned prior art due to the pump structure in which a plurality of thin plate vanes are required to be installed . On the other hand, a scroll fluid machine of the kind disclosed in Korean Patent Publication Nos. 89-628, 59-222753, 59-168236, and the like has a complicated And thus it is complicated to manufacture as a hoisting structure and requires a high cost as a whole. As a result, the suction and discharge of the fluid through the continuous variable fluid chamber formed between the swing scroll and the fixed scroll during the swing motion of the swing scroll There is a problem that the amount of suction and discharge per one rotation of the orbiting scroll is small.

In addition, Korean Patent Application No. 94-10299, which has been improved and used for the above-mentioned problems, effectively solves all the problems and disadvantages of such conventional pumps, and has a simple and efficient structure, The present invention relates to a new type of double cylindrical impeller type pump having a high efficiency and a wide variety of applications. The pump has the same eccentricity with respect to each shaft coupled to a transmission gear meshed with the same eccentric gear of the same size, The first and second impellers having a pair of identical cylinders rotating in mutually opposite directions while keeping the first and second impellers in contact with each other and a slit formed to communicate with the nearest portion of the impeller, And the outer circumferential surfaces of the pair of the same cylinders Connections between the first and the second impeller chamber, the two impellers and to a configuration which includes a diaphragm disposed between the suction port and the discharge port.

This pump is made of a simple circular body with impeller and impeller chamber, which causes the fluid to be sucked out. It also causes the fluid to be sucked except for the two impellers of the cylinder and the solid connecting diaphragm between them. It is very easy to configure and manufacture the pump, thereby providing a long service life without breakdown. In addition, since the two impellers of the circular cylinder smoothly slide and slide along the inner circumferential surfaces of the two impeller chambers of the circular cylinder, the pulsating phenomenon hardly occurs, and the moving distance of the impeller is short during one motion cycle of the impeller In addition, since the contact area between the impeller and the delivery fluid is minimized and fluid flow in the vigorous vortex or the turbulent flow is not caused, there is no waste of power, and the high speed and high pressure operation can be carried out at all.

However, in such a conventional double-cylinder impeller type pump, a gap between the impeller and the impeller chamber of the casing is generated at both sides of the impeller near the diaphragm at the top dead center or the bottom dead center, The eccentric shafts of the two impellers are respectively fixed. In order to solve the problem that the operating efficiency is small and the distance between the eccentric shafts becomes large at the position where the impeller is out of the top dead center or bottom dead center, the transmission gears are eccentrically engaged with each other. However, In the eccentric direction and the vertical direction, since the two eccentric transmission gears are overturned and can not rotate, a large clearance is required, which causes noise and vibration.

In addition, in the above-described conventional techniques, the impeller rotates in accordance with the rotation of the driving gear and the transmission gear. When the impeller rotates about the axis of the impeller chamber to interconnect the impellers for rotation in the form of an eccentric gear, There is a problem in that it does not touch a part of the circumference of the axis of the impeller chamber. This is a structural problem in that each impeller provided in each impeller chamber is interconnected to rotate in the form of an eccentric gear.

SUMMARY OF THE INVENTION The present invention has been made in order to solve the problems of the prior art described above, and it is an object of the present invention to provide a spur gear which rotates in rotation by receiving external power and a spur gear, And the spur gears are coupled to each other so that the spur gears are rotated in opposite directions to each other, and the spur gears are connected to the corresponding spur gears, The present invention has been accomplished on the basis of this invention, in which a piston having a shaft shaft which revolves in the same direction as the direction of rotation, and which is connected to the shaft shaft and eccentrically rotates by the operation of the coupled spur gear.

According to an aspect of the present invention, there is provided a spindle motor including a housing, two or more pairs of spur gears formed on both sides of the housing, Each of the pistons being configured to surround respective shaft shafts; a cylinder chamber in which the piston flows by the flow of the shaft shaft; and a suction port and a discharge port through which the fluid is sucked, Wherein the spur gear is formed with a space portion and then the shaft shaft is simply inserted into the space portion of the spur gear without a separate fixing means, and one side of the spur gears corresponding to each other around the shaft shaft receives external power, And a spur gear that transmits the power of the spur gear to the spur gear corresponding to the spur gear By providing a pump with an eccentric rolling piston, it characterized in that the transmission gear is configured to be solved by the task.

According to the pump using the eccentric rotary piston according to the present invention, the key connecting the respective pistons can be slid in the key grooves so that the piston can revolve around the axis of the cylinder chamber, so that the piston can rotate around the axis of the cylinder chamber The piston is eccentrically operated without any clearance at the time of idling and minimizes noise and vibration in the operation of the pump and greatly increases the suction force and the output of the fluid.

1 is a front view showing a pump to which the present invention is applied;
2 is a side sectional view showing the pump of the present invention
3 is an enlarged view showing the connection between the third and fourth spur gears and the second shaft shaft,
4 is a front section view showing the main body which is a constitution of the pump of the present invention
5 is a front sectional view showing a combination of a piston and a key,
6 is a front view showing the operation of the pump to which the present invention is applied
7 is a front section showing the operation of the piston and key of the fluid and the flow of the fluid in the pump of the present invention

First, the configuration of the pump using the eccentric rotary piston of the present invention will be described.

The pump includes a housing, two or more pairs of spur gears are formed on both sides of the housing, each of the shaft shafts connecting the spur gears of the two spur gears is constituted, and each of the shafts A pump comprising: a piston; a cylinder chamber through which the shaft moves, a suction port through which the fluid is sucked, and a discharge port through which the fluid is sucked, wherein a connection between the spur gear and the shaft shaft forms a space in the spur gear, Wherein the spur gear is configured such that a shaft shaft is simply inserted into a space portion of the spur gear without a separate fixing means, and a power of a spur gear, which receives external power from one side of the spur gears corresponding to each other around the shaft shaft, And a power transmission gear for transmitting the power to the corresponding spur gears.

A key groove having a predetermined depth is formed in the piston, and a key is formed to slide into the key groove and interconnect the pistons.

A protrusion groove may be formed in the shaft shaft so that the piston surrounding the shaft shaft may rotate in the same direction as the rotation direction of the shaft shaft.

A needle roller bearing (n) is formed on a shaft shaft which is inserted into a space formed in the spur gear.

Another embodiment of the above-described pump will be described.

A plurality of spur gears, each of which has a pair of spaced spur gears corresponding to each other and corresponding to the spur gears, is interposed in the housing, A first cylinder chamber through which a fluid flows and a first shaft shaft penetrates, and a second cylinder chamber through which a second shaft shaft is passed, wherein the first and second shaft shafts are connected to each other, A second piston enclosing a first cylinder shaft extending through the first cylinder chamber and a second shaft shaft passing through the second cylinder chamber, the pump comprising: The gear includes a first spur gear 210 having a first space portion 211 through which one side of the first shaft shaft 310 rotates by receiving external power and a first spur gear 210, A third spur gear 230 rotatably coupled with the first spur gear 210 and having a third space portion 231 through which one side of the second shaft shaft 320 is inserted, A second spur gear 220 formed with a second space portion 221 through which the other extended side of the first shaft shaft 310 is inserted and a second spur gear 220 corresponding to the third spur gear 230, And a fourth spur gear 240 having a fourth space portion 241 through which the other extended side of the spur gears 210 is inserted is formed. The spur gears 210, 220, 230, 240 and the shaft shafts 310, The first spur gear 210 and the second spur gear 210 are connected to the spur gears 210, 220, 230 and 240 without any separate fixing means. 220 for transmitting the power of the first spur gear 210 to the second spur gear 220.

Each of the first and second pistons 510 and 520 is formed with key grooves 511 and 521 having a predetermined depth and is inserted into the key grooves 511 and 521 and slidably inserted into the first and second pistons 510 and 520 The key 530 is interconnected.

The first and second shaft shafts 310 and 320 are provided with first and second pistons 510 and 520 which form respective protruding grooves 311 and 321 and enclose the first and second shaft shafts 310 and 320, And can rotate in the same direction as the rotation directions of the first and second shaft axes 310 and 320.

On both sides of the first and second shaft shafts 310 and 320 which are inserted into the respective space portions 211, 221, 231 and 241 formed in the respective spur gears 210, 220, 230 and 240, needle roller bearings n, respectively.

Referring to FIGS. 1 to 7, the configuration of the present invention will be described in more detail.

The pump includes a housing, two or more pairs of spur gears are formed on both sides of the housing, each of the shaft shafts connecting the spur gears of the two spur gears is constituted, and each of the shafts A piston, a cylinder chamber in which the piston flows by the flow of the shaft, and a suction port through which the fluid is sucked and a discharge port through which the fluid is discharged.

The connection of the spur gear and the shaft shaft is achieved by forming a space in the spur gear and then simply pulling the shaft shaft into the space of the spur gear without a separate fixing means.

This allows the space portion formed in the spur gear to be larger than the outer periphery of the shaft shaft, so that when the shaft shaft is drawn into the space portion of the spur gear, the spur gear is simply inserted without any fixing means.

A needle roller bearing (n) is formed on a shaft shaft which is inserted into a space formed in the spur gear.

Due to the structure of the needle roller bearing n described above, when the spur gear rotates, the shaft shaft does not rotate but rotates in the same direction as the rotational direction of the spur gear. The rotation of the shaft shaft rotates with circular motion in the space portion of the spur gear, but revolves.

Each of the shaft shafts may have a respective protrusion groove so that each of the pistons surrounding the respective shaft shafts can revolve in the same direction as the revolving direction of the respective shaft shafts.

This is because the projecting groove is formed in the shaft shaft which is to be revolved by the construction of the needle roller bearing (n), and then the piston is caused to revolve in the same direction as the rotation direction of the shaft shaft by the projecting groove of the shaft shaft.

Each of the shaft shafts is constituted by two or more pairs of spur gears on both sides, and each of the pistons surrounding the respective shaft shafts is constituted by the configuration of the respective shaft shafts.

At this time, each piston constitutes a key for mutual connection.

The key is inserted into a key groove formed in each piston, and the key groove is formed with a clearance portion at a predetermined interval so that the key to be drawn can slide.

Such a clearance portion is formed in such a manner that when the piston revolves on the inner periphery of the cylinder chamber, the outer periphery of the piston revolving due to the configuration of the piston and the key is brought into contact with the portion of the cylinder chamber, .

And a power transmitting gear for transmitting the power of the spur gear, which receives external power, to the spur gear corresponding to the spur gear, is formed at one side of the spur gears corresponding to each other around the shaft axis.

The spur gear rotating force of one side which is driven by receiving the power of the motor due to the configuration of the power transmission gear can be transmitted to the spur gear formed on the other side so that the spur gear engaged with the spur gear is also rotated So that the mutually coupled spur gears are rotated in mutually opposite directions.

According to another embodiment of the present invention,

First, a housing 100 is provided.

The housing 100 has the following components.

A first spur gear (not shown) formed in the housing 100 and having a first space portion 211 for receiving one side of the first shaft shaft 310 while being rotated by receiving external power, 210).

A second space 221 corresponding to the first spur gear 210 and corresponding to the other end of the first shaft shaft 310 is formed at a portion spaced apart from the first spur gear 210 by a predetermined distance The second spur gear 220 is formed.

A third spur gear (not shown) having a third space portion 231 formed therein to engage with the first spur gear 210 to rotate in the form of an eccentric gear and to receive one side of the second shaft shaft 320 230).

A fourth space portion 241 is formed at a portion spaced apart from the third spur gear 230 by a predetermined distance so as to correspond to the third spur gear 230 and the other side of the second shaft shaft 320 can be inserted The fourth spur gear 240 is formed.

The spur gears 210, 220, 230, and 240 include a plurality of bearings b for smoothly driving the spur gears 210, 220, 230, and 240 during rotation.

The second and fourth spur gears 220 and 240 are configured to rotate in the form of eccentric gears such that the first and third spur gears 210 and 230 are meshed with each other.

The first shaft shaft 310 is configured to receive both sides of the first space portion 211 and the third space portion 231 formed in the corresponding first and third spur gears 210 and 230, The shaft shaft 320 is configured to receive both the second space part 221 formed in the corresponding second and fourth spur gears 220 and 240 and the fourth space part 241, respectively.

At this time, a needle roller bearing n is provided on the outer circumferences of both sides of the shaft shafts 310 and 320 which are inserted into the respective space portions 211, 221, 231 and 241 so that the spur gears 210, 220, 230, 240 are rotated and rotated in accordance with the rotation direction.

The first shaft shaft 310 is inserted into the first and third space portions 211 and 231 of the first and third spur gears 210 and 230 so that the first and third spur gears 210 and 230 The first shaft shaft 310 does not rotate or finely rotates due to the needle roller bearings n provided at both ends of the first shaft shaft 310 and the first and third space portions 211, and 231, respectively. When the first shaft shaft 310 rotates, the positions of the first shaft shaft 310 inserted into the first and third space portions 211 and 231 should be the same.

In the case of the second shaft shaft 320, the same applies to the description of the first shaft shaft 310. The object is the second and fourth spur gears 220 and 240, (221, 241).

The two ends of the first and second shaft shafts which are inserted into the respective space portions 211, 221, 231 and 241 are inserted into the space portions 211, 221, 231 and 241, 230, and 240, respectively.

The main body 400 includes a plurality of spur gears 210, 220, 230, and 240 spaced apart from each other by a predetermined distance A suction port 430 through which fluid is sucked is formed on one side, and a discharge port 440 through which the sucked fluid is discharged is formed on the other side.

A first cylinder chamber 410 is formed at a portion through which the first shaft shaft 310 passes and a second cylinder chamber 420 is formed at a portion through which the second shaft shaft 320 passes.

The fluid sucked through the suction port 430 is discharged through the discharge port 440 through the first and second cylinder chambers 410 and 420.

The first cylinder chamber 410 surrounds the first shaft shaft 310 and the second cylinder chamber 420 surrounds the second shaft shaft 320. The second piston 520 is formed.

The first and second shaft shafts 310 and 320 are formed with protruding grooves 311 and 321 on the first and second shaft shafts 310 and 320 to which the first and second pistons 510 and 520 are wound. The first and second pistons 510 and 520 rotate and rotate in the same manner.

The first and second pistons 510 and 520 are connected to each other by a key 530. The first and second pistons 510 and 520 are formed in the shape of an eccentric gear .

Key grooves 511 and 521 may be formed in the first and second pistons 510 and 520.

The key grooves 511 and 521 are recesses into which the key 530 can be inserted and the key grooves 511 and 521 of the key 530 should have a gap 540 at a predetermined interval. The gap 540 may be formed in the piston 530 when the first and second pistons 510 and 520 revolve around the inner circumference of the cylinder chambers 410 and 420, The keys 530 drawn into the key grooves 511 and 521 are slid by a gap 540 spaced by a predetermined distance so that the inner circumference of the cylinder chambers 410 and 420 can be completely So that it could touch.

A power transmission gear 600 for transmitting the power of the first spur gear 210 to the second spur gear 220 is formed on one side of the first and second spur gears 210 and 220.

The first spur gear 210 and the second spur gear 220 rotate in the same direction due to the configuration of the power transmission gear 600 and the third spur gear 230 coupled to the first spur gear 210 And the fourth spur gear 240 meshed with the second spur gear 220 rotate in the same direction.

As described above, according to the present invention, the key 530 connecting the pistons 510 and 520 to the pistons 510 and 520 is rotatably supported on the inner circumference of the cylinder chambers 410 and 420, The pistons 510 and 520 are eccentrically operated without any gap at the time of revolving the inner circumference of the cylinder chambers 410 and 420 so that the pistons 510 and 520 can be slid In addition, it minimizes noise and vibration in the operation of the pump, and greatly increases the suction force and the output of the fluid.

100: Housing
210: first spur gear 211: first spur gear
220: second spur gear 221: second space portion
230: third spur gear 231: third spur gear
240: Fourth spur gear 241: Fourth spur gear
310: first shaft shaft 311: projecting groove
320: second shaft shaft 321: projecting groove
400: main body 410: first cylinder chamber 420: second cylinder chamber
430: inlet 440: outlet
510: first piston 511: key groove
520: second piston 521: key groove 530: key 540:
600: Power transmission gear
b: Bearing
n: Needle roller bearing

Claims (8)

Wherein each of the spur gears includes at least two pairs of spur gears disposed on both sides of the housing, each of the spur gears connecting the spur gears of the two spur gears is constituted, each of the pistons enclosing the respective shaft axes, 1. A pump comprising: a cylinder chamber in which a fluid moves and through which a shaft shaft passes; and a suction port through which fluid is sucked and a discharge port through which the fluid is sucked,
Wherein the spur gear and the shaft shaft are connected to each other by forming a space portion in the spur gear and then the shaft shaft is simply inserted into the space portion of the spur gear without a separate fixing means,
And a power transmission gear for transmitting the power of the spur gear, which receives external power, to the spur gears corresponding to the spur gears, on the one side of the spur gears corresponding to each other around the shaft axis. Pump with rotary piston
The method according to claim 1,
Wherein a key groove having a predetermined depth is formed in the piston, and a key is formed to slide into the key groove and connect the pistons to each other.
The method according to claim 1,
Wherein a projection groove is formed in the shaft shaft so that the piston surrounding the shaft shaft can rotate in the same direction as the rotation direction of the shaft shaft.
4. The method according to any one of claims 1 to 3,
Characterized in that a needle roller bearing (n) is formed on a shaft shaft which is inserted into a space formed in the spur gear
A plurality of spur gears, each of which has a pair of spaced spur gears corresponding to each other and corresponding to the spur gears, is interposed in the housing, A first cylinder chamber through which a fluid flows and a first shaft shaft penetrates, and a second cylinder chamber through which a second shaft shaft is passed, wherein the first and second shaft shafts are connected to each other, A first piston which surrounds a first cylinder shaft passing through the first cylinder chamber and a second piston which surrounds a second shaft shaft passing through the second cylinder chamber,
The spur gear 210 includes a first spur gear 210 and a second spur gear 210. The first spur gear 210 rotates by receiving external power and has a first space portion 211 through which one end of the first shaft shaft 310 is inserted. A third spur gear 230 rotatably coupled with the first spur gear 210 and having a third space portion 231 through which one side of the second shaft shaft 320 is inserted, A second spur gear 220 formed with a second space portion 221 through which the other extended side of the first shaft shaft 310 is inserted and a second spur gear 220 corresponding to the third spur gear 230, And a fourth spur gear 240 having a fourth space portion 241 through which the other extended side of the spur gears 210 is inserted is formed. The spur gears 210, 220, 230, 240 and the shaft shafts 310, 221, 231, and 241 of the spur gears 210, 220, 230, and 240 without a separate fixing means,
The power transmission gear 600 is connected to one side of the first and second spur gears 210 and 220 and transmits the power of the first spur gear 210 to the second spur gear 220 And an eccentric rotation piston





6. The method of claim 5,
Each of the first and second pistons 510 and 520 is formed with key grooves 511 and 521 having a predetermined depth and is inserted into the key grooves 511 and 521 and slidably inserted into the first and second pistons 510 and 520 (530) for interconnecting the eccentric rotary piston
6. The method of claim 5,
The first and second shaft shafts 310 and 320 are provided with first and second pistons 510 and 520 which form respective protruding grooves 311 and 321 and enclose the first and second shaft shafts 310 and 320, Wherein the first and second shaft shafts (310, 320) are rotatable in the same direction as the rotational directions of the first and second shaft shafts (310, 320)
The method according to any one of claims 5 to 7,
On both sides of the first and second shaft shafts 310 and 320 which are inserted into the respective space portions 211, 221, 231 and 241 formed in the respective spur gears 210, 220, 230 and 240, needle roller bearings n) of the eccentric rotary piston,

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