KR101280831B1 - Hydraulic pump using air motor - Google Patents

Abstract

PURPOSE: A hydraulic pump using an air motor is provided to be easily manufactured with low-cost using an air motor used to an existing air grinder. CONSTITUTION: A hydraulic pump using an air motor comprises a body part (20), an air motor (10), a drive gear (21), a linear motion switching part (30), a hydraulic oil pumping part (40), a hydraulic oil discharging and returning part (50). The body part is composed of a lower case (22) for storing hydraulic oil and an upper case (26) coupled to the top of the lower case through a middle plate (24). The air motor is coupled to the top of a support plate (28) supported to the top of the middle plate and is inserted into the upper case. The drive gear is connected to the output shaft of the air motor and is installed inside the support plate to be rotatable. The linear motion switching part switches the rotation of the drive gear to a reciprocating linear motion.

Description

Hydraulic pump using air motor

The present invention relates to a hydraulic pump using an air motor, and more particularly, to a hydraulic pump using an air motor of a new structure that allows the hydraulic oil to be pumped to a predetermined pressure using the air motor.

In general, the air motor rotates the final output shaft using compressed air, and the existing air motor has a disadvantage in that a small horsepower product has a high cost, a large size, and a heavy weight. Difficult to make

Unlike conventional expensive and large air motors, simpler and smaller air motors have been developed and used for general cutting tools such as hand grinders.

The hand grinder is a cutting tool operated by high-pressure air, and attaches grinder wheels of various sizes to the ends of the rotating body, and processes various types of machining operations by high-speed rotational and frictional forces (welding surface finish, metal castings). , Surface processing such as aluminum die casting, gloss work, and the like.

Here, a description will be given with reference to FIGS. 6 and 7 attached to an example in which a conventional air motor is mounted on an air grinder.

The air motor 10 is in close contact with the rotor 12, the cylindrical cylinder 13 into which the rotor 12 is inserted, the rotor 12 is inserted, and the front and rear of the cylinder 13 along the circumferential direction, respectively. And a bearing for supporting the rotational force of the rotor 12 and the cylinder front plate 14 and the cylinder back plate 15 to be fastened.

In addition, an air inlet hole 16 for introducing compressed air into the cylinder 13 is formed in the cylinder back plate 15, and an air exhaust hole 17 penetrates at a predetermined position of the surface of the cylinder 13. do.

Therefore, when compressed air is supplied into the cylinder 13 through the air inlet hole 16, the compressed air acts on the blade 11 of the rotor 12, and the rotor 12 subjected to air pressure is The rotational force of the rotor 12 is transmitted to the gear assembly 18 while the rotational direction thereof is changed and finally transferred to the grinder wheel 19, whereby the grinder wheel 19 grinds the object.

At this time, the compressed air supplied into the cylinder 13 is rotated by the rotor 12, and then discharged into the air exhaust hole 17 formed in the cylinder (13).

Such an air motor can be easily applied for small tools, ie air grinders, but has limitations in application to other applications such as small pumps.

On the other hand, the general hydraulic pump is a device for converting the mechanical energy into the pressure energy of the hydraulic oil, using a gear-type, a vane connected coaxially with the rotating shaft to pressurize the fluid by using a gap between a pair of gears. And a vane type for compressing the fluid.

These general hydraulic pumps function to operate various industrial equipment by compressing the fluid to a predetermined pressure, but most of them are being manufactured as large-capacity hydraulic pumps to obtain a large amount of flow rate. Due to the complexity of the design and excessive manufacturing costs, the actual production is difficult.

The present invention has been made in view of the above-mentioned, a linear motion portion for converting the rotary motion into a reciprocating linear motion to the output shaft of the air motor used in the air grinder, and the hydraulic pressure to discharge the hydraulic oil by pumping the hydraulic oil by the operation of the linear motion portion It is an object of the present invention to provide a compact hydraulic pump using an air motor, which in turn combines the pumping unit and generates hydraulic pressure of about 700 bar or more in the hydraulic pumping unit by the power of the air motor operating at an air pressure of about 5 bar or more.

The present invention for achieving the above object: a body portion consisting of a lower case for storing hydraulic oil, and an upper case coupled to the intermediate plate on the lower case; An air motor coupled to the support plate supported on the intermediate plate and installed in the upper case; A drive gear connected to the output shaft of the air motor and rotatably mounted in the central space of the support plate; A linear motion converter installed in one side space of the lower case to convert the rotational force of the drive gear into a reciprocating linear motion; A hydraulic pump installed in the other space of the lower case to suck and discharge the hydraulic oil in the lower case while reciprocating linearly by the linear motion converting unit; A hydraulic oil discharge and return unit which is installed in the upper case while being connected to the hydraulic pumping unit and pipes, discharges the hydraulic oil pumped from the hydraulic pump to the final discharge port, or returns the discharged hydraulic oil to the inside of the lower case; It provides a hydraulic pump using an air motor, characterized in that configured to include.

In a preferred embodiment of the present invention, the linear motion converting portion includes: a reduction gear for reducing the rotational speed by meshing with a drive gear of the air motor; A rotating shaft connected coaxially with the reduction gear and rotatably mounted in the lower case; An eccentric shaft formed integrally with the lower end of the rotating shaft; A rod support integrally mounted on an outer circumferential surface of the eccentric shaft and providing a linear reciprocating force to the pumping rod of the hydraulic pump portion while eccentrically rotating together with the eccentric shaft; .

As a preferred embodiment of the present invention, the hydraulic pumping portion: a suction block is formed with a suction port for suction of the hydraulic oil in the lower case; A pumping hole opened at one side toward the linear motion converting unit, and a communication hole at which the suction port of the suction block is coupled is formed at the other side, and a pumping block formed by branching the discharge port above the pumping hole; A spring inserted in the innermost part of the pumping hole of the pumping block; A pumping rod whose front end is supported on the outer surface of the rod support of the linear motion converter, and the rear end is inserted into the pumping hole to compress the spring during rotation of the rod support of the linear motion converter. A sealing body inserted into the inlet of the pumping hole of the pumping block to maintain the airtightness and to guide the linear movement of the pumping rod; .

As a preferred embodiment of the present invention, the hydraulic oil discharge and return unit is provided with a structure in which a flow passage having a check valve therein, the connection block is fixed to the intermediate plate while being connected to the discharge port and the piping of the hydraulic pump; A final discharge port communicating with the flow path of the connection block is formed inside one side, and a hydraulic oil return hole penetrated up and down to communicate with the inside of the lower case is formed inside the other side, and a connection flow path is formed between the final discharge port and the hydraulic oil return hole. A discharge block provided in a structure and fastened on the connection block; A hydraulic oil opening and closing device for closing the hydraulic oil return hole when the hydraulic oil is discharged to the final discharge port of the discharge block and opening the hydraulic oil return hole when the discharged hydraulic oil is returned; .

As a preferred embodiment of the present invention, the hydraulic oil opening and closing device includes: a nozzle body which is provided in a structure in which the final return hole is formed through and is mounted at the bottom of the hydraulic oil return hole of the discharge block; An opening and closing rod formed at an upper end thereof, and having an opening and closing pin formed at an lower end thereof to open and close the final return hole of the nozzle body, the opening and closing rod being inserted into the hydraulic oil return hole except the head; A spring inserted into the opening / closing pin of the opening / closing rod and compressed when the opening / closing rod is elevated; An air cylinder mounted on an upper portion of one side of the discharge block; One end is arranged to be pressurized by the lower piston of the air cylinder, the other end is a lever to be liftably fastened to the head of the opening and closing rod; .

In particular, the pipe connecting the discharge port of the pumping block of the hydraulic pumping unit and the flow path of the connecting block of the hydraulic oil discharge and return unit is equipped with a high-pressure relief valve for dissipating the pressure when the hydraulic oil discharge pressure is higher than the set pressure. do.

In addition, one side of the upper case is characterized in that the hydraulic oil supply block which is fastened in communication with the hydraulic oil return hole of the discharge block of the hydraulic oil discharge and return portion is further mounted.

In addition, one side wall of the lower case is characterized in that the oil level meter for measuring the flow rate in the lower case.

Through the above-mentioned means for solving the problems, the present invention provides the following effects.

According to the present invention, by using the air motor used in the existing air grinder, it is possible to easily produce a small hydraulic pump of low cost, small size, light weight.

That is, the linear motion converter converts the rotational motion into a reciprocating linear motion to the output shaft of the air motor, and the hydraulic pumping part for pumping and discharging the hydraulic oil by the operation of the linear motion converter, in order to operate at an air pressure of about 5 bar or more. It is possible to provide a hydraulic pump capable of generating hydraulic pressure of about 700 bar or more using the power of the air motor.

In addition, by combining the hydraulic oil discharge and return unit with the hydraulic pumping unit, the final discharge operation of the hydraulic oil and the return operation of the discharged hydraulic oil can be easily interrupted.

1 is a front sectional view showing a hydraulic pump using an air motor according to the present invention;
2 is a side sectional view showing a hydraulic pump using an air motor according to the present invention;
Figure 3 is a schematic diagram showing a linear rod reciprocating movement of the pumping rod of the hydraulic pump by the eccentric shaft rotational force of the hydraulic pump using the air motor according to the present invention,
Figure 4 is a side cross-sectional view showing the discharge state of the hydraulic oil as an operating state of the hydraulic pump using the air motor according to the present invention,
5 is a side cross-sectional view showing a return state of hydraulic oil as an operating state of the hydraulic pump using the air motor according to the present invention;
6 is an exploded perspective view showing the configuration of the air motor,
7 is a cross-sectional view showing a configuration of an air grinder mounted with a conventional air motor.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The present invention is to provide a hydraulic pump using an air motor to generate a hydraulic pressure of about 700 bar or more by using the power of the air motor operating at an air pressure of about 5 bar or more.

To this end, as shown in the accompanying Figures 1 and 2 is provided with a body portion 20 for implementing the hydraulic pump of the present invention, the body portion 20 is a lower case 22 in which a certain amount of hydraulic oil is stored ) And an upper case 26 coupled to the lower case 22 with an intermediate plate 24 interposed therebetween.

In particular, the air motor 10 coupled to the support plate 28 supported on the intermediate plate 24 is disposed inside the upper case 26.

The air motor 10 is to generate a rotational force by the air pressure provided from an air compression device such as a compressor, as shown in Figure 6 rotor 12 is mounted with a wing 11 along the circumferential direction, A cylindrical cylinder 13 into which the rotor 12 is inserted, a cylinder front plate 14 and a cylinder back plate 15 which are tightly fastened to the front and rear surfaces of the cylinder 13, respectively, to support the rotational force of the rotor 12 And bearings.

In addition, an air inlet hole 16 for introducing compressed air into the cylinder 13 is formed in the cylinder back plate 15, and an air exhaust hole 17 penetrates at a predetermined position of the surface of the cylinder 13. do.

In this case, an air suction port 74 connected to an air compressor such as a compressor is formed at an upper end of the air motor 10, and an output shaft protruding from the lower end of the air motor 10, that is, at the lower end of the rotor 12. The drive gear 21 rotatably mounted in the central space of the support plate 28 is integrally connected.

Therefore, when compressed air is supplied into the cylinder 13 through the air inlet hole 16, the compressed air acts on the blade 11 of the rotor 12, and the rotor 12 subjected to air pressure is The rotation force of the rotor 12 is transmitted to the drive gear 21.

At this time, the compressed air supplied into the cylinder 13 is rotated by the rotor 12, and then discharged into the air exhaust hole 17 formed in the cylinder (13).

Here, the configuration and operation of the linear motion conversion unit for receiving the rotational force of the drive gear to convert it into linear reciprocating motion is as follows.

The linear motion conversion unit 30 is mounted in one side space of the lower case 22 so as to receive the rotational force of the drive gear 21 and convert it into linear reciprocating motion.

Each of the components of the linear motion converter 30 is airtightly enclosed in a housing having a predetermined shape. At the top thereof, the linear motion converter 30 meshes with the drive gear 21 of the air motor 10 to reduce the rotational speed and increase the torque value. The reduction gear 31 is arranged.

In addition, a rotary shaft 32 which is coaxially connected with the reduction gear 31 is disposed below the reduction gear 31, and an eccentric shaft 33 is integrally formed at the lower end of the rotation shaft 32.

In addition, on the outer circumferential surface of the eccentric shaft 33, the rod support 34 of the ring type structure to provide a linear reciprocating force to the pumping rod 41 of the hydraulic pumping portion 40 while eccentrically rotating together with the eccentric shaft 33 Is fitted.

Therefore, when the drive gear 21 connected to the output shaft of the air motor 16 is rotated, the reduction gear 31 meshed with the drive gear 21 is rotated, the number of rotation of the drive gear 21 at this time At the same time as the deceleration gear 31 is decelerated at the same time the torque value is increased, with the rotation shaft 32 coaxial with the reduction gear 31 and at the same time the eccentric shaft integral to the lower end of the rotation shaft 32 ( 33) will also rotate.

Subsequently, the rod support 34 mounted on the outer diameter portion of the eccentric shaft 33 also rotates along with the eccentric shaft 33, where the pump of the hydraulic pumping portion 40 is described in more detail below. The front end of the pim rod 41 is linearly reciprocated in a state of being in close contact with the rod support 34.

Here, the configuration and operation flow of the hydraulic pumping unit are as follows.

The hydraulic pumping unit 40 is installed in the other space of the lower case 22 to suck and discharge the hydraulic oil in the lower case 22 while linearly reciprocating by the operating force of the linear motion converting unit 30.

As one configuration of the hydraulic pumping unit 40, a suction block 42 having a suction port 42a for suctioning the hydraulic oil in the lower case 22 is disposed on one side, and the suction block 42 is in communication with the suction block 42 on the other side. Pumping block 43 is disposed.

In more detail, a three-way flow path is formed in the pumping block 43. On one side, a pumping hole 43a opened toward the rod support 34 of the linear motion converter 30 is formed. On the other side, a communication port 43b to which the suction port 42a of the suction block 42 is coupled is formed, and the pumping hole 43a and the discharge port 43c for discharging hydraulic oil upward are formed. do.

At this time, a spring 44 is supported at the innermost surface of the pumping hole 43a of the pumping block 43, the support hole 43b is formed, and the pumping rod 41 is linearly reciprocated in front of the pumping block 43. It is placed to be movable.

More specifically, the front end of the pumping rod 41 is supported on the outer surface of the rod support 34 of the linear motion conversion unit 30, the rear end is inserted into the pumping hole 43a, the straight line During the eccentric rotation of the rod support 34 of the motion conversion unit 30 is pushed by the rod support 34 at the same time as the compression of the spring 44 to the reverse or forward movement by the elastic restoring force of the spring (44).

On the other hand, the sealing body 45 is fastened to the inlet of the pumping hole 43a of the pumping block 43 to guide the linear movement of the pumping rod 41 while maintaining the airtightness of the hydraulic oil.

Therefore, as shown in FIG. 3, when the rod support 34 of the linear motion converter 30 is eccentrically rotated, a large diameter portion of the rod support 34 pushes the pumping rod 41. When the 41 moves backward while compressing the spring 44, the moment when the front end portion of the pumping rod 41 comes into close contact with the small diameter portion of the rod support 34 is pumped by the elastic restoring force of the spring 44. The dragon rod 41 is in an advanced state.

At this time, when the suction force according to the forward and backward movement of the pumping rod 41 acts on the suction port 42a of the suction block 42 through the pumping hole 43a and the communication port 43b of the pumping block 43, Hydraulic oil in the lower case 22 passes through the suction port 42a, the communication port 43b, and the pumping hole 43a, and is sucked in. The hydraulic oil sucked into the pumping hole 43a is continuously pumped. Is discharged through the discharge port 43c branched upward from the pumping hole 43a during the linear reciprocating motion.

Thus, the hydraulic oil discharged from the hydraulic pumping unit is finally discharged to the device requiring the hydraulic oil by the hydraulic oil discharge and return unit, the final discharged hydraulic oil is returned to the lower case again.

Here, the configuration of the hydraulic oil discharge and return unit will be described.

The hydraulic oil discharge and return unit 50 is installed in the upper case 26 while being connected to the discharge port 43c of the pumping block 43 of the hydraulic pumping unit 40 by the pipe 49, and the hydraulic pumping unit 40 It discharges the hydraulic oil discharged to the discharge port 43c of the final discharge port to the device requiring the hydraulic oil, or serves to return the discharged hydraulic oil to the interior of the lower case (22).

As one configuration of the hydraulic oil discharge and return unit 50, a connection block 53 connected to the discharge port 43c of the hydraulic pumping unit 40 and the pipe 49 is fixed to the intermediate plate 14, the connection block A flow path 52 communicating with the discharge port 43c and the pipe 49 is formed in the inside of the 53, and a check valve 51 for passing hydraulic oil in the discharge direction and blocking the discharge direction in the flow path 52. ) Is mounted.

In addition, a discharge block 57 is connected to the connection block 53, and a final discharge port 54 is formed in one side of the discharge block 57 to communicate with the flow path 52 of the connection block 53. In the other side, the hydraulic oil return hole 55 penetrates up and down to communicate with the inside of the lower case 22.

At this time, a connection flow path 56 is formed between the final discharge port 54 and the hydraulic oil return hole 55 of the discharge block 57, and the final discharge port 54 and the hydraulic oil return hole 55 are connected to the connection path 56. ) Is in a state in which communication is possible.

In particular, the hydraulic oil discharge and return unit 50 of the present invention closes the hydraulic oil return hole 55 when the hydraulic oil is finally discharged to the final discharge port 54 of the discharge block 57, and the hydraulic oil at the time of returning the discharged hydraulic oil. Hydraulic oil opening and closing device 60 for opening the return hole 55 is included.

As a configuration of the hydraulic oil opening and closing device 60, the nozzle body 62 having a hollow structure, that is, a hollow structure having a final return hole 61 penetrated at the center thereof, is a hydraulic oil return hole 55 of the discharge block 57. It is mounted at the bottom of the inside, and the bottom exit of the final return hole 61 of the exposed body 62 is open to the inside of the lower case 22.

Further, as another configuration of the hydraulic oil opening and closing device 60, the opening and closing rod 65 is inserted into the hydraulic oil return hole 55 of the discharge block 57.

In more detail, the opening and closing rod 65 has a head 63 having a large diameter integrally formed at an upper end thereof, and an opening and closing pin for opening and closing the final return hole 61 of the nozzle body 62 at the lower end thereof. 64 is provided in an integrally formed structure and is inserted into the hydraulic oil return hole 55, and the head 63 is in a state of protruding upward through the upper portion of the hydraulic oil return hole 55.

At this time, on the opening and closing pin 64 of the opening and closing rod 65 is compressed during the lifting and lowering of the opening and closing rod 65, a spring 66 that exhibits an elastic restoring force when the opening and closing rod 65 is lowered is inserted.

In particular, as another configuration of the hydraulic oil opening and closing device 60, an air cylinder 67, which is a driving source for raising and lowering the opening and closing rod 65, is mounted on one side of the discharge block 57.

In addition, the lower piston 68 of the air cylinder 67 and the head 63 of the opening and closing rod 65 transfers the lifting force of the lower piston 68 of the air cylinder 67 to the opening and closing rod 65. It is interconnected by the lever 69 for transmitting.

That is, one end of the lever 69 is arranged to be pressurized by the lower piston 68 of the air cylinder 67, and the other end is liftable to the head 63 of the opening and closing rod 65. Is fastened.

Meanwhile, a pipe 49 connecting the discharge port 43c of the pumping block 43 of the hydraulic pumping part 40 and the flow path 52 of the connection block 53 of the hydraulic oil discharge and return part 50. The high pressure relief valve 46 which dissipates the pressure when the hydraulic oil discharge pressure is equal to or higher than the set pressure is provided to serve to maintain the hydraulic oil discharge pressure at a constant pressure.

Referring to Figures 4 and 5 attached to the operating flow of the hydraulic oil discharge and return configured as described above are as follows.

4 is a diagram illustrating a hydraulic oil discharge state of the hydraulic pump using the air motor of the present invention, and FIG. 5 illustrates a hydraulic oil return state.

First, the hydraulic oil discharged to the discharge port 43c of the hydraulic pumping part 40 as described above passes through the pipe 49 and the high pressure relief valve 46, and check valve 51 in the flow path 52 of the connection block 53. ) Is supplied to the discharge block 57.

Of course, the hydraulic oil is supplied to the discharge block 57 is maintained at a set constant pressure when passing the high pressure relief valve 46.

Subsequently, the hydraulic oil supplied to the discharge block 57 is finally discharged to the hydraulic device requiring the hydraulic oil through the final discharge port 54, that is, the final discharge port 54 communicating with the flow path 52 of the connection block 53. do.

At this time, the hydraulic oil return hole 55 communicated with the final discharge port 54 of the discharge block 57 by the connection flow path 56 maintains the closed state.

More specifically, when air is not supplied to the air cylinder 67 of the hydraulic oil opening and closing device 60 and the lower piston 68 of the air cylinder 67 maintains the lifted state, the opening and closing connected by the lever 69 The rod 65 is in a state of being lowered in the hydraulic oil return hole 55, and thus the opening and closing pin 64 of the opening and closing rod 65 prevents the nozzle body 62 from blocking the final return hole 61. Since the hydraulic oil is finally discharged through the final discharge port 54, the hydraulic oil does not flow toward the hydraulic oil return hole 55.

On the other hand, after a certain time after the final discharge of the hydraulic oil, when the air is supplied to the air cylinder 67 to return to the inside of the lower case 22 again, the lower piston 68 is lowered, the lower piston 68 is Pressing one end of the lever 69 while lifting the other end of the lever 69 to lift the head 63 of the opening and closing rod 65.

Subsequently, as the head 63 of the opening and closing rod 65 is lifted, the opening and closing rod 65 in the hydraulic oil return hole 55 is lifted and at the same time, the opening and closing pin of the opening and closing rod 65 ( 64 is lifted from the final return hole 61 of the nozzle body 62, and the final return hole 61 of the nozzle body 62 is opened and opened.

Therefore, after circulating the equipment requiring the hydraulic oil, the hydraulic oil returned to the final discharge port 54 of the discharge block 57 again flows through the connection flow path 56 to the hydraulic oil return hole 55, and subsequently the hydraulic oil The hydraulic oil entering the return hole 55 is returned to the lower case 22 through the final return hole 61 of the nozzle body 62 in the open state.

At this time, since the check valve 51 is mounted in the flow path 52 of the connection block 53 connected to the final discharge port 54 of the discharge block 57, the hydraulic oil returning does not flow toward the connection block 53. In this case, the connection flow path 56, the hydraulic oil return hole 55, and the final return hole 61 of the nozzle body 62 are sequentially passed to easily return to the lower case 22.

As a preferred embodiment of the present invention, one side of the upper case 26 is further equipped with a hydraulic oil supply block 70 that can communicate with the hydraulic oil return hole 55 of the discharge block 57 of the hydraulic oil discharge and return unit 50 When the hydraulic oil is replaced or needs to be replenished, hydraulic oil is injected through the hydraulic oil supply block 70 so that the hydraulic oil passes through the hydraulic oil return hole 55 and is filled into the lower case 22.

Of course, when the hydraulic oil is injected through the hydraulic oil supply block 70, as shown above, the lower piston 68 of the air cylinder 67 is lowered and the opening and closing rod 65 is lifted, thereby opening and closing the rod 65 The hydraulic oil flows through the final return hole 61 of the nozzle body 62, which is in the opened state, by allowing the opening and closing pin 64 of the nozzle body 62 to be lifted from the final return hole 61 of the nozzle body 62. To be easily injected into the vessel.

One side wall of the lower case 22 is equipped with a level gauge 72 for measuring the flow rate of the hydraulic oil filled in the lower case 22, it is possible to observe the flow rate and state of the hydraulic oil at any time.

On the other hand, as the lower case 22 and the upper case 26 is coated with a fragrance material having a function such as respiratory disease treatment, it exhibits effects such as fatigue recovery of the user, health promotion.

The fragrance material may be mixed with a functional oil, and the mixing ratio is 95 to wt.% Of a fragrance and 3 to 5 wt.% Of a functional oil. The functional oil is 30 wt.% Of lavender vendetta and 30 wt.% Of lime blossom oil. , 20% by weight of Manuka, 20% by weight of inula.

It is preferable that the functional oil is mixed in an amount of 3 to 5% by weight based on the perfume. If the mixing ratio of the functional oil is less than 3% by weight, the effect is insignificant. If the mixing ratio of the functional oil is more than 3 to 5% by weight, the function thereof is not greatly improved while the manufacturing cost is greatly increased.

Among the functional oils, lavender spikes include pinene, camphene, and myrcene as the main chemicals. They are good for analgesic, antidepressant, decongestion, sterilization and wound healing.

Lime blossom oil has a good effect on cerebral hemorrhage, heat stroke, epilepsy, dizziness, migraine, and high blood pressure, and is particularly effective in raising blood pressure due to psychological stress.

Manuka includes caryophyllene, geraniol, and pinene as the main chemicals, and is effective in preventing respiratory infections such as colds, coughs, bronchitis, and rhinitis.

Inula is effective in treating chronic cough, dry cough, phlegm, as well as respiratory diseases such as asthma and bronchitis pneumonia.

As the functional oil is coated on the lower case 22 and the upper case 26, it contributes to the user's fatigue recovery, health promotion and the like.

On the other hand, the pumping rod 41 is preferably made of spherical graphite iron.

Spheroidal graphite cast iron is cast iron in which graphite is spherically crystallized in the solidification process by adding magnesium or the like to the molten iron of gray cast iron. Since the spherical graphite cast iron has a small notch effect, the stress concentration phenomenon is reduced and the strength and toughness are greatly improved.

The pumping rod 41 of the present invention is heated to 1540-1600 ° C. to make molten iron, followed by desulfurization treatment, and a spheroidizing treatment containing about 0.5 to 1.0% of magnesium and spheroidizing at 1470 to 1515 ° C. After carrying out the heat treatment.

In this case, when the spheroidal graphite iron is heated to less than 1540 ° C., the entire structure may not be sufficiently melted, and if it is heated above 1600 ° C., energy is unnecessarily wasted. Therefore, it is preferable to heat spherical graphite iron at 1540-1600 degreeC.

In the molten nodular cast iron, a spheroidizing agent containing about 0.5% to 1.0% of magnesium is added. When the magnesium content is less than 0.5%, the spheroidizing agent has a very small effect, and when it exceeds 1.0%, the effect of the spheroidizing agent is greatly improved. On the other hand, there is a problem that expensive material costs are increased. Therefore, the magnesium mixing ratio of the spheroidizing agent is about 0.5 to 1.0%.

When a spheroidizing treatment agent is added to the molten spheroidal graphite cast iron, the spheroidizing treatment is performed at 1470 to 1515 ° C. If the spheroidizing treatment temperature is less than 1470 ° C., the spheroidizing treatment is not performed properly. If the spheroidizing treatment temperature is higher than 1515 ° C., the spheroidizing treatment effect is not greatly improved, but energy is unnecessarily wasted. Therefore, 1470-1515 degreeC is suitable for spheroidization process temperature.

Since the pumping rod 41 of the present invention is made of spherical graphite cast iron, the stress concentration phenomenon is reduced to greatly improve the strength and toughness, thereby extending the life of the product.

10: air motor 11: wing
12 rotor 13 cylinder
14 cylinder front plate 15 cylinder back plate
16: air inlet hole 17: air exhaust hole
18: gear assembly 19: grinder wheel
20: body 21: drive gear
22: lower case 24: intermediate plate
26: upper case 28: support plate
30: linear motion conversion unit 31: reduction gear
32: rotation axis 33: eccentric shaft
34: rod support 40: hydraulic pump
41: pumping rod 42: suction block
42a: suction port 43: pumping block
43a: pumping hole 43b: communication port
43c: discharge port 44: spring
45: sealing body 46: high pressure relief valve
49: pipe 50: hydraulic oil discharge and return
51: check valve 52: flow path
53: connecting block 54: final discharge port
55: hydraulic oil return hole 56: connection flow path
57: discharge block 60: hydraulic oil switchgear
61: final return hole 62: nozzle body
63: head 64: opening and closing pin
65: opening and closing rod 66: spring
67: air cylinder 68: piston
69: lever 70: hydraulic oil supply block
72: oil gauge 74: air intake

Claims (8)

A body part 20 including a lower case 22 in which hydraulic oil is stored, and an upper case 26 coupled to the lower case 22 with an intermediate plate 24 interposed therebetween;
An air motor 10 coupled to the support plate 28 supported on the intermediate plate 24 and embedded in the upper case 26;
A drive gear 21 connected to the output shaft of the air motor 10 and rotatably mounted in the central space of the support plate 28;
A linear motion converter 30 installed in one side space of the lower case 22 to convert the rotational force of the drive gear 21 into reciprocating linear motion;
A hydraulic pump 40 installed in the other space of the lower case 22 to suck and discharge the hydraulic oil in the lower case 22 while reciprocating linearly by the linear motion converting unit 30;
The hydraulic pump 40 is connected to the pipe 49 and is installed in the upper case 26 to discharge the hydraulic oil pumped from the hydraulic pump 40 to the final discharge port, or discharge the hydraulic oil discharged to the lower case 22. Hydraulic oil discharge and return unit (50) for returning to the inside;
The hydraulic oil discharge and return unit 50,
A connection block fixed to the intermediate plate 14 while being connected to the discharge port 43c of the hydraulic pumping part 40 and the pipe 49 is provided with a structure in which a flow path 52 having a check valve 51 is formed ( 53);
The final discharge port 54 is formed in communication with the flow path 52 of the connection block 53 in one side, the hydraulic oil return hole 55 penetrated up and down to communicate with the inside of the lower case 22 in the other side A discharge block 57 formed between the final discharge port 54 and the hydraulic oil return hole 55 and having a structure in which a connection flow path 56 is formed and fastened on the connection block 53;
When the hydraulic oil is discharged to the final discharge port 54 of the discharge block 57, the hydraulic oil return hole 55 is closed, and when the discharged hydraulic oil is returned, the hydraulic oil opening and closing device 60 opens the hydraulic oil return hole 55. Configured;
The hydraulic oil opening and closing device 60,
A nozzle body 62 having a structure in which the final return hole 61 is formed through and mounted at the bottom of the hydraulic oil return hole 55 of the discharge block 57;
A head 63 is formed at an upper end, and an opening and closing pin 64 for opening and closing the final return hole 61 of the nozzle body 62 is integrally formed at a lower end thereof, except for the head 63. An opening and closing rod 65 inserted into the hydraulic oil return hole 55;
A spring 66 inserted into the opening and closing pin 64 of the opening and closing rod 65 and compressed when the opening and closing rod 65 is elevated;
An air cylinder 67 mounted on an upper portion of one side of the discharge block 57;
One end is arranged to be pressurized by the lower piston 68 of the air cylinder 67, the other end is composed of a lever 69 is fastened to be lifted to the head portion 63 of the opening and closing rod 65 Hydraulic pump using an air motor, characterized in that.
The method according to claim 1,
The linear motion converter 30 is:
A reduction gear 31 engaged with the drive gear 21 of the air motor 10 to reduce the rotation speed;
A rotating shaft 32 connected coaxially with the reduction gear 31 and rotatably installed in the lower case 22;
An eccentric shaft 33 formed integrally with the lower end of the rotating shaft 32;
A rod support 34 integrally mounted on an outer circumferential surface of the eccentric shaft 33 and providing linear reciprocating force to the pumping rod 41 of the hydraulic pumping part 40 while being eccentrically rotated together with the eccentric shaft 33;
Hydraulic pump using an air motor, characterized in that consisting of.
The method according to claim 1,
The hydraulic pump 40 is:
A suction block 42 having a suction port 42a through which hydraulic oil in the lower case 22 is sucked;
A pumping hole 43a opened toward the linear motion converter 30 is formed at one side, and a communication hole 43b is formed at the other side to which the suction port 42a of the suction block 42 is coupled. A pumping block 43 formed by diverging the discharge port 43c above the 43a;
A spring 44 inserted into the innermost part of the pumping hole 43a of the pumping block 43;
The front end is supported on the outer surface of the rod support 34 of the linear motion converter 30, and the rear end is inserted into the pumping hole 43a so as to rotate the rod support 34 of the linear motion converter 30. A pumping rod 41 for linear reciprocating motion while compressing the spring 44;
A sealing body 45 inserted into the inlet of the pumping hole 43a of the pumping block 43 to maintain airtightness and to guide the linear movement of the pumping rod 41;
Hydraulic pump using an air motor, characterized in that consisting of.
delete delete The method according to claim 1,
Hydraulic oil is provided in the pipe 49 connecting the discharge port 43c of the pumping block 43 of the hydraulic pumping part 40 and the flow path 52 of the connection block 53 of the hydraulic oil discharge and return part 50. A hydraulic pump using an air motor, characterized in that the high pressure relief valve 46 is released when the discharge pressure is higher than the set pressure.
The method according to claim 1,
One side of the upper case 26 is characterized in that the hydraulic oil supply block 70 is further mounted to communicate with the hydraulic oil return hole 55 of the discharge block 57 of the hydraulic oil discharge and return unit 50 is further mounted. Hydraulic pump using air motor.
The method according to claim 1,
One side wall of the lower case 22 is a hydraulic pump using an air motor, characterized in that the oil level gauge 72 is mounted to measure the flow rate in the lower case (22).

Images