KR19990073188A - Rotary pump by the piston - Google Patents

Abstract

The present invention relates to a rotary pump, which is a device for transporting a liquid or gaseous fluid through a tube using a pressure action or for transporting a fluid in a low pressure vessel into a high pressure vessel through the tube. Install a rotor of the cylinder function that combines the piston with the guide hole to enable the linear reciprocating motion in a certain moving range so as to rotate concentrically with the inner surface of the casing, but the casing is reciprocated in the state of being fitted in the guide hole of the piston. Piston control pins are installed eccentrically in the center of the rotor to enable excellent fluid transfer effect, as well as smooth operation and durability. It is intended to expand the scope of application.

Description

Rotary pump by the piston

The present invention relates to a rotary pump for transporting a fluid such as a liquid or gas through a pipe by using a pressure action. More specifically, the piston having a movement guide groove enables a linear reciprocating motion within a certain movement range. The rotor of the combined cylinder function is installed to be rotated concentrically with the center of the cylindrical inner surface of the case, but the case cover is eccentrically installed in the center of the cylindrical inner surface to enable the reciprocating movement of the piston in the state fitted to the movement guide groove of the piston The piston control pin provides excellent fluid transfer effect, as well as smooth operation to improve durability, and to simplify the structure and to reduce the manufacturing cost as well as to make it possible to extend the scope of application.

Conventional rotary pumps include a vane pump having a plurality of vanes reciprocally sliding to a rotor, or a rotary gear pump in which an external gear is eccentrically engaged in an internal gear.

However, in the conventional vane pump, as the deceleration rotates to prevent deformation of the vane due to the resistance of the fluid, the efficiency of the vane decreases and the friction between the vane and the case is severe. In addition, the rotary gear pump has an undercut phenomenon in which the tooth tip of one of the gears, which is generated when the gear is engaged, eats up the root of the other gear, shortens the life of the gear and causes severe noise and vibration. It is caused.

In addition, in the case of the high-speed rotation of the pumps of the above-mentioned problems, the structure is complicated, frequent failures, small size and light weight is difficult.

The present invention is to solve all the problems caused by the conventional pump as described above is an object of the present invention can achieve excellent fluid transfer effect, as well as smooth operation is improved durability and reduction of manufacturing cost by simplifying the structure Of course, to provide a pump that can be miniaturized to expand the scope of application,

In order to achieve this, the present invention proposes a cylinder block having a cylinder function to be installed to rotate concentrically with the inner surface of the case.

In addition, the present invention proposes a piston structure having a movement guide groove that is coupled to allow the linear reciprocating motion simultaneously with the rotation in the cylinder block.

In addition, the present invention proposes a piston control pin installed in the case cover so as to be eccentric in the center of the cylindrical inner surface of the case to enable the reciprocating movement of the piston in the state of being fitted in the movement guide groove of the piston.

In addition, the present invention provides an eccentric position adjusting means of the piston control pin that can change the eccentric position of the piston control pin to adjust the reciprocating range of the piston to adjust the amount of fluid transfer.

In addition, the present invention is configured to be used as a continuously variable structure to be connected to each other by a connection pipe to control the piston control pins of the two pumps at the same time or only one side by using the eccentric position adjusting means. present.

1 is an exploded perspective view showing a first embodiment of the present invention.

Figure 2 is an exemplary cross-sectional view showing a bonding state of FIG.

3 is a cross-sectional view taken along the line A-A viewed from the outlet of FIG.

Figure 4 is a view showing a process of suction and discharge per rotation range of the present invention.

Figure 5 is an exploded perspective view showing a second embodiment of the present invention.

Figure 6 is a view showing the operation of each rotation range of the second embodiment.

Figure 7 is an exploded perspective view showing a third embodiment of the present invention.

Figure 8 is an exemplary cross-sectional view for explaining the function of the oil motor using the present invention.

9 is an exemplary cross-sectional view taken along the line B-B viewed from the outlet of FIG. 8;

Figure 10 shows a fourth embodiment of the present invention for adjusting the eccentric position of the piston control pin.

Figure 11 shows a fifth embodiment of the present invention to have a continuously variable function.

Figure 12 shows a sixth embodiment of the present invention to have a continuously variable function.

※ Explanation of code about main part of drawing ※

1: Case 2: Case cover 3: Inlet

4: Outlet 5: Rotating shaft 6: Cylinder block

7: Move Guide 8: Piston 9: Move Guide

10: Metal or ring 11: Piston control pin 12: Cylindrical inner surface

13: Cylinder block 14: First moving guide surface 15: Second moving guide surface

16: 1st piston 17: 2nd piston 18: 1st movement guide

19: 2nd movement guide hole 20: Cylinder block 21: Cylindrical movement guide surface

22: cylindrical piston 23: moving guide groove 30: variable pump

31: Eccentric position adjusting means 32: Eccentric position adjusting box 33: Female threaded pipe

34: variable piston control pin 35: male thread 36: rotating shaft

37: variable handle 40: variable pump 41: rotary shaft

42: oil motor 43: drive shaft 44, 47: connector

45: oil inlet 46: oil outlet 48: oil outlet

49: oil input port 50: variable oil motor

The basic configuration of the present invention is a cylinder block (6) rotatably installed on the cylindrical inner surface portion 12 of the case (1) having a suction port (3) and a discharge port (4) in the opposite position, and the cylinder block A piston (11) slidably installed at (6) and having a movement guide groove (9), and coupled with the cylinder block (6) to perform linear reciprocating motion of the piston (8) during rotation of the cylinder block (6). The piston control pin 11 for guiding is characterized in that it is formed to be fixed to the case cover (2) eccentric with the rotation shaft (5).

FIG. 1 is an exploded perspective view showing a first embodiment of the present invention, in which a piston 8 and a cylindrical inner surface portion 12 of a case 1 having a suction port 3 and a discharge port 4 in opposing positions. The piston is composed of a cylinder block (6) is installed to be rotated by the rotating shaft (5), the inner surface of the cylinder block (6) is provided with a movement guide surface (7) in a linear state to be fitted in a slidingly close state (8) is installed in the piston (8) to process the movement guide groove (9) in a direction orthogonal to the direction of movement, the movement guide groove (9) in the state eccentric with the rotary shaft (5) case cover (2) The piston control pin 11 is fixed to the fitting so that the piston (8) during the rotation of the cylinder block (6) is configured to enable a linear reciprocation at the same time as the rotation on the movement guide surface (7).

In the pump of the present invention configured as described above, the cylinder block 6 is positioned in parallel with the inlet port 3 and the outlet port 4 to block the passage as shown in FIG. 4, and the piston 8 is the cylinder block ( 6) is completely moved to one side end and is in contact with the cylindrical inner surface portion 12 of the case (1) and the piston control pin 11 is fitted to the intermediate position of the movement guide groove (9) state before the start of rotation, that is, the rotation angle Is rotated clockwise by 45 degrees by using the rotary shaft 5 in the state where 0 is assumed, the piston 8 causes the piston control pin 11 fitted to the movement guide groove 9 to rotate. Since it is eccentrically upward from (5), it starts moving to the middle part of the cylinder block 6, as shown in the figure, and starts to secure the space for inhaling fluid.

When the cylinder block 6 is rotated by 90 degrees by the progress of the rotation, the cylinder block 6 is positioned at right angles to the inlet port 3 and the outlet port 4, and the piston 8 is moved to the intermediate point of the cylinder block 6. It is moved correctly to ensure more suction space at 45 degrees rotation.

On the other hand, when the rotation of 135 degrees by the continuous rotation of the piston (8) is passed to the other end gradually passing through the intermediate point of the cylinder block (6) to secure more moving space and when rotated 180 degrees cylinder block (6) The piston comes to the same position as the initial 0 degree rotation position and completes the suction process, and at the same time, the piston 8 is moved to the other end of the cylinder block 6 as much as possible to secure the maximum suction space of the fluid.

In this state, the process of discharging the fluid is started. When it is rotated more and rotates at 225 degrees, the discharging operation of the fluid starts. As in the case of 45-degree rotation, the piston 8 moves back to the middle of the cylinder block 6 and gradually increases. Up to 270 degrees, the cylinder block (6) is positioned at right angles to the inlet (3) and outlet (4), and the piston (8) is moved to the exact intermediate point of the cylinder block (6) Will be

When it is rotated further and rotated 315 degrees, the piston 8 is gradually moved to the other end while passing through the intermediate point of the cylinder block 6, and the discharge operation of the fluid is almost finished, while the suction space is gradually secured to the maximum and rotated 360 degrees. If it is returned to the same position as the initial 0 degree rotation position is a state that holds the maximum amount of fluid intake, after which the pumping operation is performed while repeating the above-described process.

FIG. 5 is an exploded perspective view showing a second embodiment of the present invention, in which the first and second movement guide surfaces 14 and 15 of two linear states are provided orthogonal to the cylinder block 13, respectively, and thus the movement guide holes. (18) (19) The first and second pistons (16) and (17) formed are configured to operate at the same time. In short, two pistons of the first embodiment are configured to overlap each other in an orthogonal state. (16) and (17) will operate independently of each other.

Meanwhile, the piston control pins 11 fixed to the case cover 2 are fitted to the movement guide holes 18 and 19, respectively, as shown in FIG. 6, and thus the first piston 16 has the first movement guide surface ( 14 and the second piston 17 is in contact with the second movement guide surface 15 and is assumed to be in a state before the start of rotation, that is, the rotation angle is 0 degrees. The first and second pistons 16 and 17 are operated in the same order as the first embodiment and the second piston 17 is operated in the same order as the pistons located in the 90 degree rotational state in FIG. Although the starting point is different, the operating process is performed in the same manner as in the first embodiment, and thus detailed operation of each rotation angle can be understood with reference to the operation of FIG.

On the other hand, Figure 7 is an exploded perspective view showing a third embodiment of the present invention, a circular piston 22 having a movement guide groove 23 in the circular movement guide surface 21 is formed so as to penetrate straight through the cylinder block 20 ) Is inserted into the cylinder block 20 so that the piston control pin 11 fixed to the case cover 2 is inserted into the movement guide groove 23 on the side of the cylinder block 20. The eccentric condition between the rotary shaft 5 and the piston control pin 11 is the same as in the first and second embodiments, but only in the first and second embodiments, the piston is in planar contact with the cylinder block. In the example, there is only a difference having a circular three-dimensional contact state, and since the operation of the piston proceeds in the same manner as in FIG. 4 of the first embodiment, further detailed description thereof will be omitted.

The third embodiment can be applied to the high pressure to be able to more completely block the leakage of the fluid due to the increase in airtightness because it is easy to manufacture the structural specific phase to improve the processing precision.

On the other hand, Figure 8 or 9 does not impart a motive force to the rotary shaft 5 in the configuration of the present invention instead of forcibly supplying a fluid such as oil to the suction port 3 by rotating the piston (8) by the rotation of the piston (8) In other words, if the rotary shaft 5 is passively rotated using the motive force of the fluid, it may also have the function of an oil motor that generates power through the rotary shaft 5 by the pressure of the fluid.

Figure 10 is a cross-sectional view showing an embodiment of the eccentric position adjusting means for adjusting the eccentric position of the piston control pin which is one part of the present invention to show a fourth embodiment of the present invention of the case cover and the piston control pin Other structures except for the configuration can be selectively applied to any of the first to third embodiments, and the first embodiment is applied in the drawings.

The female screw tube 33 having the variable piston control pin 34 integrally installed at one side thereof may be installed in the eccentric position control box 32 so that the male screw 35 may be installed at the top of the eccentric position control box 32. Equipped with an eccentric position adjusting means 31 to be fastened so that it is composed of a variable pump 30 by the translational movement of the screw in accordance with the rotational direction of the male screw 35, the variable piston control pin 34 is the eccentric position control box (32) As it moves up and down, the closer to the center of the rotary shaft 36, the shorter the reciprocating width of the piston is, so that the suction space of the fluid is reduced and the discharge amount is smaller. Since the suction space of is increased, it is possible to increase the emissions.

Meanwhile, FIG. 11 is a fifth embodiment in which a pump without an eccentric position adjusting means is integrally coupled to a variable pump provided with an eccentric position adjusting means as shown in FIG. 10 in an opposite state as in the first, second, and third embodiments. As shown in FIG. 10, the pump on the left side with the eccentric position adjusting means 31 is composed of a variable pump 40 to which external power is applied through the rotating shaft 41 to transfer the fluid. The pump on the right side, which is excluded, is composed of a motor (hereinafter referred to as an oil motor 42 for convenience) that uses fluid as a transmission medium to cause the drive shaft 43 to be rotated passively by the movement of fluid such as oil to be transferred as a motive force. The eccentric position adjusting means 31 is configured to control the variable pump 40.

In addition, the fluid inlet 45 of the variable pump 40 is connected to the oil outlet 46 of the oil motor 42 by a connecting pipe 44 and at the same time the oil outlet 48 of the variable pump 40 is connected. It is connected to the oil inlet port 49 of the oil motor 42 by the pipe 47 and the inside has a closed circuit that can be circulated without fluid loss by filling liquid fluid without gaps. First of all, if the rotational force is applied to the rotating shaft 41 of the variable pump 40, the fluid is discharged to the oil outlet 48 as shown in the arrow direction, and the oil motor 42 is connected through the connecting pipe 47. The fluid introduced into the oil input port 49 of the oil is forced to rotate the cylinder block 42a of the oil motor 42 so that the driving shaft 43 integrally formed thereon is rotated passively by using the flow of fluid. It has the function of an oil motor that rotates the shaft.

The configuration as described above assumes that the eccentricity of the piston control pin 42b fixedly installed in the oil motor 42 is set to have a fluid transfer amount of 1000 cc per revolution, and the variable pump 40 using the eccentric position adjusting means 31. When the variable piston control pin (34) of the pump is moved to the center of the rotating shaft (41) of the variable pump (40) to bring down the fluid feed amount to 500cc per revolution, the drive shaft (43) of the oil motor (42) is 1 It is to have a function of deceleration by / 2 rotation, on the contrary, the variable piston control pin 34 of the variable pump 40 is moved from the piston control pin 42b of the oil motor 42 by using the eccentric position adjusting means 31. If more eccentricity is given, the amount of fluid transfer per rotation is relatively increased. Therefore, the speed of the variable piston control pin 34 is adjusted without permission. Thus, the rotation speed of the oil motor is controlled without permission. It can be.

If the variable piston control pin 34 of the variable pump 40 is adjusted in the opposite direction to the center of the rotation shaft 41, the direction of the fluid is reversed so that the direction of the fluid is reversed.

On the other hand, Figure 12 is a change in the structure of Figure 11 in the structure of Figure 11 variable pump 40 is provided with a variable pump (eccentric position adjusting means 31 is installed instead of the oil motor 42 which is not variable in the state of being maintained ( A variable oil motor 50 having the same structure as 40) is provided so that the variable piston control pins can be freely adjusted to each other by their respective eccentric position adjusting means. Compared with the oil motor structure of FIG. 11 having a gear shift range can be further subdivided, it is possible to extend the application range.

On the other hand, the eccentric position adjusting means 31 applied to the structure of Figs. 10, 11, 12 in the drawing shows a structure for raising and lowering the piston control pin using a translational motion of the female and the male screw coupled to each other. Not limited to one embodiment and the accompanying drawings, it is apparent to those skilled in the art that various substitutions, modifications, and changes are possible without departing from the spirit of the present invention. For example, the rack can be installed on the piston control pin and adjusted by using a pinion fitted to it, or a cable can be installed on the piston control pin and adjusted using a lever connected to it. It can be done.

The present invention as described above can be changed in various configurations without departing from the technical spirit, it is possible to provide excellent fluid transfer effect and expansion of utilization, as well as to control the amount of fluid transport, so that it can be appropriately responded to various transportation conditions. This smoothness and durability is improved, and the manufacturing cost is reduced due to the simplification of the structure, as well as the small size is possible to extend the scope of application.

Claims (7)

It is fitted to the cylindrical inner surface portion 12 of the case (1) having the suction port (3) and the discharge port (4) in the opposite position so as to be rotatable, and the movement guide surface (7) and the rotating shaft (5) on the planar surface facing each other A cylinder block 6 provided; A piston (8) slidably coupled between the movement guide surfaces (7) of the cylinder block (6) and having a movement guide groove (9); Piston control to be installed in the case cover (2) eccentric with the center of the rotating shaft (5) and inserted in the movement guide groove (9) to induce linear reciprocation of the piston (8) during the rotation of the cylinder block (6) Rotary piston pump, characterized in that it comprises a pin (9), respectively. The method of claim 1; The first and second movement guide surfaces 14 and 15 are provided to be orthogonal to each other in the cylinder block 13, and the movement guide holes 18 and 19 are provided in the first and second movement guide surfaces 14 and 15. The first and second pistons (16) (17), each of which is provided so as to enable mutually independent operation. The method of claim 1; Drill the circular movement guide surface 21 in a state perpendicular to the cylinder block 20 in the axial direction, and reciprocate the circular piston 22 having the movement guide groove 23 through which the piston control pin 11 is fitted. Apparatus characterized in that the installation is possible to exercise. The method according to claim 1 or 2 or 3, wherein a fluid such as oil is forcibly supplied to the suction port 3 so that the rotating shaft 5 is rotated by the rotation of the piston 8, that is, using the motive force of the fluid. Apparatus characterized in that the rotating shaft 5 is passively rotated The method of claim 1 or 2 or 3; The female screw tube 33 having a variable piston control pin 34 integrally formed at one end and configured to be lifted and separated from the case cover 2, and eccentric in a state of being engaged with the female screw tube 33. Eccentric position adjusting means 31 is composed of a male screw 35 is installed to be rotatable at the same position on the position adjustment box 32 and a variable handle 37 for imparting rotational force to the male screw 35. Equipped with a variable pump 30 that can adjust the transfer amount of the fluid by varying the eccentricity between the variable piston control pin 34 and the center of the rotary shaft 36 in accordance with the rotation of the male screw (35). Device. The method of claim 5; Oil motor having a piston control pin (42b) of the variable pump control pin (34) provided with a variable piston control pin 34 to enable the displacement control by the eccentric position adjustment means is not possible to displace the oil inlet (45) The oil outlet 46 of the variable pump 40 is connected to the oil outlet 46 of the 42 and the connecting pipe 44, and the oil input of the oil motor 42 is connected through the connecting pipe 47. It is connected to the sphere 49, the oil motor 42 through the control of the transfer amount of the fluid flowing into the oil motor 42 and the change of the transfer direction in accordance with the displacement degree of the variable piston control pin 34 of the variable pump 40 The device characterized in that the stepless speed changeover and the rotation direction can be switched. The variable pump 40 and the variable oil motor 50 are configured by integrally combining the variable oil motor 50 having the same eccentric position adjusting means as the variable pump 40 with the variable pump 40. Is a device characterized in that it has a common control of the transfer amount of the fluid and the switching direction of the transfer direction.