KR20110024142A - Pump for grease lubrication system - Google Patents

Abstract

PURPOSE: A pump for a grease lubrication system is provided to be easily installed even in a narrow space by automatically filling the pump with grease. CONSTITUTION: A pump for a grease lubrication system comprises a gear box(10), a grease storage case(20), a discharging element(30), and a grease barrel(40). The gear box is placed and fixed to a support plate(16). The discharging element is linearly reciprocated and discharges grease. A second grease hole, connected to a first grease hole, is formed in the bottom surface of the grease barrel. A reservoir plate for pressing grease is arranged inside the grease barrel and can be ascended and descended.

Description

Pump for grease lubrication system

The present invention relates to a pump for a grease lubrication system, and more particularly, to a grease lubrication system pump that is easily installed in a narrow installation space or a place where space is not secured so that grease replenishment and pumping supply can be made smoothly. It is about.

In general, the wheel part of an industrial machine or a medium-large vehicle is lubricated by spraying an appropriate amount of oil on the areas of high wear or friction, where it is inconvenient for lubricating oil, high temperature, and high surface pressure (high). High viscosity lubricants (Grease) are used in places where low speed, low speed, etc.

After a certain period of time, the lubricant will be replaced with a new lubricant at regular intervals. In the past, the administrator had to inject the parts directly into the vehicle whenever needed. It may be lost, but even the mechanics are avoiding dirty and difficult lubricants if possible.

Therefore, in order to replace the lubricant, a lubricant oiling operation is performed using a distribution valve, and a pump for pumping a lubricant, such as grease, is essentially used as a distribution valve for distributing lubricant.

Most pumps used in grease lubrication systems have almost similar performance requirements, and the maximum discharge pressure is usually about 350 kg / cm 2, and the actual operating pressure is about 200 kg / cm 2.

Among the conventional pumps, the pump shown in the attached FIG. 15 is the smallest size of the industrial pumps, and in this case, the hydraulic oil (grease) replenishment is performed by replacing the 18 liter grease bottle 40 as it is. Hydraulic fluid replenishment is entirely dependent on the operator's manual labor.

In addition, since the operator has to manually turn the handle mounted on the product when lifting the grease barrel to lift the grease barrel to the upper side, there is a disadvantage that the free space for the grease barrel replacement must be secured.

In other words, when the conventional pump product is installed in a cabinet having a certain space, there is a problem that the cabinet needs to be larger than necessary to secure a free space for replacing the grease barrel, which increases cost and secures space in a narrow industrial site. It is causing various problems.

Of course, if there is no great difficulty in securing the space in the industrial site, there is no problem in the installation of the conventional pump, otherwise, there is a problem that the installation of the pump product itself is impossible.

For example, the conventional pump products are mainly used by mounting up to two sets in one large crane, there is a problem that can not be installed in the conventional pump products, such as medium or small cranes.

The present invention has been made to solve the above-mentioned conventional problems, iii) grease replenishment function through a separate filling port, ii) grease discharge amount adjustment function through the combination of the discharge element, iii) grease remaining amount in the grease container Function, i) easy maintenance of the discharging element, i) returning grease to the grease container when grease is not discharged properly. It is an object to provide a pump for a grease lubrication system that can be made.

The present invention for achieving the above object is a structure in which a reduction gear that is engaged with the rotating shaft is built-in, the gear box is fixed seated on the support plate of a predetermined area; A motor connected to the reduction gear of the gear box to provide a rotational driving force; It is fixedly mounted on the gearbox, one side is equipped with a check valve type charging port connected to the charge pump, the rotating shaft is inserted through the center, the first grease charge and discharge hole is formed at the same time A grease storage case having a predetermined volume through which a grease return hole is formed; A discharging element detachably mounted at the other side of the grease storage case and discharging grease by reciprocating while perturbing with a cam integrally attached to the rotating shaft; The grease storage case is mounted on an upper surface of the grease storage case, but a second grease charge / discharge hole communicating with the first grease charge / discharge hole of the grease storage case is formed therethrough, and a reservoir plate pressurizing the grease is allowed to descend. Positioned grease passage; A discharge path hole connected to an outlet side of the discharge element through a connection pipe and a return via hole connected to the grease return hole and a connection pipe are formed therethrough, and the grease discharge pressure applied to the discharge path hole is measured. A pressure gauge equipped with a pressure gauge and having a relief valve for returning the grease to the grease through the return via hole and the grease return hole when the grease discharge pressure is higher than the reference value; Grease remaining amount detecting means mounted on an upper surface of the grease barrel and detecting a remaining amount of grease in the grease barrel as the reservoir plate is moved up and down; A discharge adjustment block mounted at an outlet side of a discharge path hole of the discharge pressure control block to adjust a discharge amount of grease; It provides a pump for a grease lubrication system, characterized in that configured to include.

In a preferred embodiment, the discharge element comprises: a body having a horizontal path and a vertical path formed therein; A grease inlet formed through the upper surface of the body and into the horizontal path; One end is in contact with the cam, the other end and the piston is introduced into the horizontal path; A spring disposed between the outer diameter portion of one side end of the piston and the outer diameter portion of the body; A nipple for pipe connection installed in the distal end of the horizontal path; A check valve for preventing backflow installed in the vertical path; It is configured to, characterized in that the piston can be introduced into the horizontal path by the cam motion at the same time to push the grease introduced through the grease inlet toward the vertical path.

In another preferred embodiment, the remaining amount of grease detecting means includes: a guide shaft having a lower end integrally mounted on an upper surface of the reservoir plate and an upper end extending through an upper surface of the grease barrel; Upper and lower sensing grooves formed along upper and lower circumferential surfaces of the guide shaft, respectively; A limit switch mounted on an upper surface of the grease barrel, having a high switch entering the upper sensing groove and a low switch entering the lower sensing groove; A controller for controlling the driving of the charge pump in response to the signal of the limit switch; Characterized in that consisting of.

In another preferred embodiment, the outlet side of the discharge control block is connected to the pipe and at the same time connected to the grease storage case and the return pipe, the other side further comprises a switching valve formed with a final discharge port, on one side of the support plate It is characterized by mounting a dedicated plate as a medium.

On the other hand, it is characterized in that the stirring blade which is disposed on the bottom surface side of the grease barrel to agitate the grease is integrally connected to the rotating shaft.

Through the above problem solving means, the present invention provides the following effects.

First, since the pump of the present invention is automatically made up of grease through a separate filling port, it is possible to improve the workability by eliminating the need to manually lift up the grease when grease is added to a conventional pump product, and in particular, narrow installation It can be easily installed in places where space or space cannot be secured.

Second, grease discharge amount control can be diversified by combining one or two or more discharge elements through which grease is discharged.

Third, it is possible to accurately grasp the grease replenishment time by accurately grasping the remaining amount of grease in the grease barrel by high / low level detection.

Fourth, when the performance degradation due to repeated use of the discharge element, there is an advantage that the maintenance is easy because only a simple operation after assembly.

Fifth, when grease distribution pipe and distribution variation are abnormal and grease is not discharged normally and pressure above the set pressure is added to grease, grease is not discharged and returned to the grease bottle, preventing pump damage due to motor overload. can do.

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

1 is a perspective view illustrating a pump for a grease lubrication system according to the present invention, FIGS. 2A and 2B are front views thereof, FIG. 3 is a side view thereof, FIG. 4 is a partial cross-sectional perspective view, and FIG. 5 is according to the present invention. A perspective view of a grease container removed from a pump for a grease lubrication system.

In the lower configuration of the pump according to the present invention, the gear box 10, the discharge pressure control block 50, the discharge adjustment block 70 and the like are fixedly mounted on the support plate 16 of a predetermined area.

The gearbox 10 has a reduction gear 14 made of a conventional gear combination such as a helical gear, a bevel gear, and the like, and one side of the gear box 10 is connected to the reduction gear 14 to provide a rotational driving force. The providing motor 18 is arranged, and in particular, the output shaft of the reduction gear is engaged with the rotating shaft 12 extending in the vertical direction.

At this time, the grease storage case 20 having a predetermined internal volume is fixedly mounted above the gear box 10.

One side of the grease storage case 20 is equipped with a check valve (built-in) type filling port 24 connected to the filling pump 22, as shown in FIG. 7, and at the center of the rotating shaft 12. ) Is inserted through, the cam 13 is formed integrally with the outer diameter of the rotating shaft 12 in the grease storage case (20).

In addition, a first grease charge and discharge hole 26 is formed through the upper surface of the grease storage case, and a grease return hole 28 is formed through the bottom surface of the grease storage case.

A grease barrel 40 is seated on an upper surface of the grease storage case 20, and a second grease charge / discharge hole 26 of the grease storage case 20 is communicated to a bottom surface of the grease reservoir 40. A grease charge / discharge hole 42 is formed therethrough, and therein, a reservoir plate 44 which is pushed up and down by pressurizing the discharged grease, or is pushed up and down by the grease being filled therein.

At this time, the bottom surface of the grease bottle 40 is connected integrally with the upper end of the rotary shaft 12, the stirring blade 48 for rotating and stirring the grease when rotating the rotary shaft 12 is integrally attached.

Here, referring to Figures 10 and 13 attached to the configuration for the discharge element in detail as follows.

The discharge element is detachably mounted on the other side of the grease storage case 20 and serves to discharge grease by performing a linear reciprocating motion while perturbing with the cam 13 integrally attached to the rotary shaft 12. One may be mounted as shown in FIG. 2A, and two may be mounted in a left and right pair as shown in FIG. 2B.

As the body 31 serving as a skeleton of the discharge element 30 is manufactured in a vertical bent shape, a horizontal path 31a and a vertical path 31b are formed therein, and the body 31 of the body 31 The grease inlet 32 penetrates into the horizontal path 31a from the upper surface.

At this time, when the pump is driven, grease from the grease container 40 and the grease storage case 20 enters the grease inlet 32 as will be described later.

In addition, the rear end of the piston 33 is introduced into the horizontal path 31a of the discharge element 30, and the front end of the piston 33 is in contact with the cam 13 integrally attached to the rotation shaft 12. It becomes a state.

In addition, a spring 34 is disposed between the outer diameter portion of the front end of the piston 33 and the outer diameter portion of the body 31, and the spring 34 has a piston in contact with the maximum height point of the cam 13. 33 is compressed during the movement into the horizontal path 31a and exerts an elastic restoring force that pushes the piston 33 back to its original position when it reaches the lowest height point of the cam 13.

In addition, a seal 37 and a pipe connection nipple 35 are mounted in the distal end portion of the horizontal path 31a of the discharge element 30, and in particular, in the vertical path 31b, a reverse flow in discharging grease is applied. A check valve 36 for preventing a back flow for preventing the internal portion is installed.

On the other hand, since the discharge element 30 of the present invention as described above is detachably mounted to about four bolts, when the performance decreases due to its repeated use, only the assembly operation after simple separation, the maintenance is very easy to provide.

Here, the grease remaining amount detecting means and the operation of the pump according to the present invention will be described.

8 and 9 are partial cross-sectional perspective views illustrating a grease remaining amount sensing operation of a pump for a grease lubrication system according to the present invention.

The grease remaining amount detecting means 60 of the pump according to the present invention detects the maximum filling point of the grease in the grease barrel 40 so that no further grease filling is made, and also the maximum discharge point of the grease in the grease barrel 40. It detects grease and makes grease charge.

As a configuration of the grease remaining amount detecting means, the lower end of the guide shaft 62 is integrally mounted to the upper surface of the reservoir plate 44, and the upper end thereof extends through the upper surface of the grease barrel 40, in particular the Upper and lower sensing grooves 64 and 65 are formed on the upper and lower circumferential surfaces of the guide shaft 62, respectively.

In addition, the upper surface of the grease container 40 has a limit switch having a low switch 67 is drawn into the upper sensing groove 64 and the high switch 66 is drawn into the lower sensing groove 65. 68 is mounted.

In addition, the limit switch 68 is connected to a controller 69 for controlling the driving of the charge pump 22 in response to the signal of the high switch 66 or the low switch 67.

Therefore, as shown in FIG. 8, when all of the grease in the grease container 40 is used and the remaining amount is insufficient, the reservoir plate 44 and the guide shaft 62 are lowered to the lowest point, and at the same time, the guide shaft The low switch 67 is introduced into the upper sensing groove 64 of the 62 and is switched on, and the switching on signal of the low switch 67 at this time is transmitted to the controller 69.

Subsequently, the controller 69 sends a driving signal to the charge pump 22, and at the same time, grease is charged and supplied by driving the charge pump 22, and is mounted on one side of the grease storage case 20. Grease is injected through the built-in check port with a built-in check valve (24) and at the same time the first grease charge / discharge hole 26 of the grease storage case 20 and the second grease charge / discharge hole of the grease container 40 ( The grease is automatically filled in the grease bottle 40 through 42).

At this time, as the grease is filled in the grease barrel 40, the reservoir plate 44 and the guide shaft 62 are pushed up by the filling pressure of the grease and raised to the highest point, and at the same time of the guide shaft 62 The high switch 66 is introduced into the lower sensing groove 65 and switched on, and the switching on signal of the high switch 66 is transmitted to the controller 69.

Therefore, the controller 69 sends a driving stop signal to the charge pump 22, and at the same time, the charging of the grease is stopped while the charge pump 22 stops driving.

Here, the discharge pressure control block, which is one of the main components of the present invention, will be described.

11A to 11C are diagrams illustrating a discharge pressure control block of a pump for a grease lubrication system according to the present invention.

Inside the discharge pressure control block 50, the outlet path (discharge side) of the vertical path 31b of the discharge element 30 is discharge path hole 52 connected through a connecting pipe 82, and the grease return hole A return via hole 54 connected through the 28 and the connecting pipe 84 is formed therethrough.

Accordingly, the outlet side (discharge side) of the vertical path 31b of the discharge element 30 is connected to the discharge pressure control block 50 through the connecting pipe 82, and also the bottom surface of the grease storage case 20. The grease return hole 28 formed in the is connected to the discharge pressure control block 50 through the connecting pipe 84.

In addition, the discharge pressure control block 50 is equipped with a pressure gauge 56 for measuring the grease discharge pressure applied to the discharge path hole 52, in particular, if the grease discharge pressure is higher than the reference value return via hole 54 And a relief valve 58 for returning the grease to the grease container 40 through the grease return hole 28.

Therefore, when the grease is connected to the pump of the present invention and there is a problem in the distribution valve or the pipe that distributes the grease to the grease position, and the grease is not discharged normally, the grease is used for protection of the pump (overloading the motor, etc.). When the discharge pressure is higher than the reference value, it is detected by the relief valve 58 and returned to the return via hole 54 without discharging grease into the discharge path hole 52 which is a normal discharge path.

Accordingly, the grease returned to the return via hole 54 of the discharge pressure control block 50 passes through the grease return hole 28 of the grease storage case 20 via the connecting pipe 84. Return to).

On the other hand, as shown in FIG. 12, a discharge adjustment block 70 for adjusting the amount of grease discharge is attached to the outlet side of the discharge path hole 52 of the discharge pressure control block 50. 70 has specifications for 30cc / min single discharge of grease, dual 30cc / min discharge of grease, and 60cc / min discharge of grease, and can be selected and used depending on the application.

In addition, as shown in Figure 14 is connected to the outlet side and the pipe 86 of the discharge control block 70 and at the same time connected to the grease storage case 20 and the return pipe 88, the other side is the final Further provided with a switching valve (80) having a discharge port (89) formed on the one side of the support plate 16 via a dedicated plate 85, the switching valve (80) is applied to the hydraulic pressure of the pump itself As a valve to be switched by, the grease discharged from the pump is supplied to either one of the two supply pipes so as to smoothly supply grease to a distribution valve for distributing grease to a desired place.

Here, the operation flow for the grease lubrication system pump of the present invention having the above configuration will be described.

6 is a control block diagram for grease filling and residual amount detection of a pump for a grease lubrication system according to the present invention, and FIG. 13 is a cross-sectional view illustrating an operating state of the pump for a grease lubrication system according to the present invention.

The rotational force is transmitted to the rotating shaft 12 through the reduction gear 14 together with the driving of the motor 18.

Subsequently, the cam 13 rotates together with the rotation shaft 12. At this time, the tip of the piston 33 of the discharge element 30 is perturbed on the surface of the cam 13.

In addition, grease from the grease container 40 and the grease storage case 20 flows into the horizontal path 31a through the grease inlet 32 formed in the body 31 of the discharge element 30.

At this time, when the outer diameter portion of the front end of the piston 33 reaches the maximum height point of the cam 13, the piston 33 compresses the spring 34 to perform a linear movement into the horizontal path 31a, and at the same time the horizontal path The grease supplied in the 31a is discharged while being pushed toward the vertical path 31b.

On the other hand, when the lowest height point of the cam 13 and the tip outer diameter portion of the piston 33, the spring 34 exerts an elastic restoring force to push the piston 33 to its original position.

Subsequently, when the normal discharge pressure is maintained, the grease passes through the discharge path hole 52 of the discharge pressure control block 50 from the outlet side (discharge side) of the vertical path 31b of the discharge element 30. After the discharge amount adjustment is made in the discharge adjustment block 70, it is smoothly supplied to the distribution valve for distributing the grease to the desired place.

Of course, when a problem occurs in the distribution valve or its piping and the grease is not discharged normally, when the grease discharge pressure is higher than the reference value, it is detected by the relief valve 58 and discharged to the discharge path hole 52 which is a normal discharge path. The grease is returned to the return via hole 54 without discharging the grease, and eventually the grease is returned to the grease barrel 40.

As described above, the pump according to the present invention can be easily installed in a narrow installation space or a place where space is not secured, and it is possible to diversify the amount of grease discharge, to accurately determine the grease replenishment timing, and to repeatedly use the discharge element. It is easy to maintain and maintain when the performance is reduced, and can easily prevent the pump damage due to motor overload.

1 is a perspective view showing a pump for a grease lubrication system according to the present invention;

2a and 2b is a front view showing a pump for a grease lubrication system according to the present invention,

3 is a side view showing a pump for a grease lubrication system according to the present invention;

4 is a partial cross-sectional perspective view showing a pump for a grease lubrication system according to the present invention;

5 is a perspective view of a state in which a grease barrel is separated from a pump for a grease lubrication system according to the present invention;

6 is a control block diagram for grease filling and residual amount detection of a pump for a grease lubrication system according to the present invention;

7 is a cross-sectional view showing a state in which grease is filled through the filling port of the pump for grease lubrication system according to the present invention,

8 and 9 is a partial cross-sectional perspective view illustrating the grease remaining amount detection operation of the pump for grease lubrication system according to the present invention,

10 is a perspective view showing the appearance of the discharge element of the pump for grease lubrication system according to the present invention;

11a to 11c is a view showing a discharge pressure control block of the pump for grease lubrication system according to the present invention,

12 is a perspective view showing a discharge adjusting block of a pump for a grease lubrication system according to the present invention;

13 is a cross-sectional view illustrating an operating state of a pump for a grease lubrication system according to the present invention;

14 is a perspective view showing an example in which a separate switching valve is further attached to a pump for a grease lubrication system according to the present invention;

15 is a perspective view showing a conventional pump for grease lubrication system.

<Explanation of symbols for the main parts of the drawings>

10 gearbox 12 rotation axis

13: Cam 14: Reduction Gear

16: support plate 18: motor

20: grease storage case 22: charge pump

24: Filling port with check valve 26: First grease charge and discharge hole

28: grease return hole 30: discharge element

31: body 31a: horizontal path

31b: vertical path 32: grease inlet

33: piston 34: spring

35: nipple 36: check valve for preventing backflow

40: grease container 42: 2nd grease charge / discharge hole

44: reservoir plate 48: stirring blade

50: discharge pressure control block 52: discharge path hole

54: return via hole 56: pressure gauge

58: relief valve 60: grease remaining amount detection means

62: guide shaft 64: upper sensing groove

65: lower sensing groove 66: high switch

67: low switch 68: limit switch

69 controller 70 discharge control block

80: switching edge 82, 84: connector

85: dedicated plate 86: piping

88: return piping 89: final discharge port

Claims (5)

A gearbox 10 having a structure in which a reduction gear 14 engaged with the rotation shaft 12 is embedded, the gear box 10 being fixedly seated on a support plate 16 having a predetermined area; A motor 18 connected to the reduction gear 14 of the gear box 10 to provide a rotational driving force; It is fixedly mounted on the gear box 10, one side is equipped with a check valve-type filling port 24 connected to the charging pump 22, the rotary shaft 12 is inserted through the center, the upper surface A grease storage case 20 having a predetermined volume through which the first grease charge / discharge hole 26 is formed and at the bottom thereof, a grease return hole 28 is formed; A discharge element (30) detachably mounted on the other side of the grease storage case (20) and discharging grease in a linear reciprocating motion while perturbing with the cam (13) integrally attached to the rotary shaft (12); The second grease charging and discharging hole 42, which is placed on the upper surface of the grease storage case 20 and communicates with the first grease charging and discharging hole 26 of the grease storage case 20, is formed therethrough. A grease container 40 in which a reservoir plate 44 for pressurizing grease is positioned to be lowered; The discharge passage hole 52 connected to the outlet side of the discharge element 30 through the connection pipe 82 and the return via hole 54 connected to the grease return hole 28 and the connection pipe 84. Is formed through the pressure gauge 56 for measuring grease discharge pressure applied to the discharge path hole 52. If the grease discharge pressure is higher than or equal to the reference value, the return via hole 54 and the grease return hole 28 are formed. A discharge pressure control block 50 in which a relief valve 58 for returning the grease to the grease container 40 is built; Grease remaining amount detection means (60) mounted on an upper surface of the grease barrel (40) to sense the remaining amount of grease in the grease barrel (40) as the reservoir plate (44) moves up and down; A discharge adjustment block (70) mounted on an outlet side of the discharge path hole (52) of the discharge pressure control block (50) to adjust the amount of grease discharge; Grease lubrication system pump, characterized in that configured to include. The method of claim 1, wherein the discharge element 30 is: A body 31 having a horizontal path 31a and a vertical path 31b formed therein; A grease inlet (32) formed through the upper surface of the body (31) into the horizontal path (31a); One end is in contact with the cam 13, the other end is a piston (33) drawn into the horizontal path (31a); A spring (34) disposed to be compressible between an outer diameter portion of one side end of the piston (33) and an outer diameter portion of the body (31); A sealing (37) and a pipe connecting nipple (35) installed in the distal end portion of the horizontal path (31a); A check valve 36 for preventing a back flow installed in the vertical path 31b; By the cam 13, the piston 33 is introduced into the horizontal path (31a) and at the same time the grease introduced through the grease inlet (32) can be discharged while pushing toward the vertical path (31b). A grease lubrication system pump. The method according to claim 1, wherein the remaining amount of grease detecting means 60 is: A lower end integrally mounted on an upper surface of the reservoir plate 44, and an upper end of the guide shaft 62 extending through the upper surface of the grease container 40; Upper and lower sensing grooves 64 and 65 formed along upper and lower circumferential surfaces of the guide shaft 62, respectively; Limit switch 68 mounted on the upper surface of the grease barrel 40 having a high switch 66 drawn into the upper sensing groove 64 and a low switch 67 drawn into the lower sensing groove 65. )Wow; A controller (69) for controlling the driving of the charge pump (22) in response to the signal of the limit switch (68); Grease lubrication system pump, characterized in that consisting of. The method according to claim 1, A switching valve 80 is connected to the outlet side of the discharge control block 70 and the pipe 86 and is connected to the grease storage case 20 and the return pipe 88, and the other side has a final discharge port 89. Further provided, the grease lubrication system pump, characterized in that the mounting plate on one side of the support plate (16) via a medium. The method according to claim 1, Grease lubrication system pump, characterized in that the stirring blade (48) disposed on the bottom surface side of the grease barrel (40) to agitate the grease integrally connected to the upper end of the rotary shaft (12).

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