KR20190008079A - Pneumatic grease pump - Google Patents

Abstract

The present invention relates to a pneumatic grease pump and, more specifically, relates to a pneumatic grease pump, wherein an air cylinder and a guide bar are installed on a compression plate to compress grease within a container in accordance with the amount of the grease used. Therefore, the grease can be smoothly pumped, and can be used without the remainder in the container.

Description

Pneumatic grease pump

The present invention relates to an air grease pump, and more particularly, to an air grease pump, in which an air cylinder and a guide bar are provided on a compression plate to compress the grease in the container in accordance with the amount of grease used to smoothly pump the grease, To an air grease pump for use.

In general, grease should be supplied to balls, bushings, motors, cylinders, and rotating bodies from time to time to prevent abrasion of the friction parts of the equipment, to reduce unnecessary overload and soot in the engine and to save fuel, Normally, when grease is supplied to construction equipment such as a fork crane or an excavator, the operator uses a method of directly injecting the grease using a grease supply device to each friction portion for a period of time in which no operation is performed.

In such a manner that the operator directly supplies the grease, there is a disadvantage that it is inconvenient and inconvenient that a separate manpower should be mobilized, and that the grease can not be supplied in an appropriate amount in a timely manner when necessary (oiling) In case of excessive supply, grease flows to the outside of the apparatus, causing contamination of the surroundings or causing a cause of ignition as well as sliding accident.

On the other hand, FIG. 11 is a photograph of a conventional grease supply device. When a grease is supplied to a grease container, a considerable amount of grease on the bottom of the container is not pumped. Is installed in the suction pipe of the pump, the compression plate compresses the grease due to its own weight. Therefore, when the compression plate is buried in the grease during use, the compression operation is not frequently performed, and the residual grease on the bottom of the container is hardly compressed There is a problem that the remaining amount of grease is not used and pumped.

Korean Patent No. 10-1699670

SUMMARY OF THE INVENTION Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and it is an object of the present invention to provide an air cylinder and a guide bar on a compression plate, And which can be used without any remaining grease in the vessel.

The problems to be solved by the present invention are not limited to those mentioned above, and other solutions not mentioned can be clearly understood by those skilled in the art from the following description.

As a means for achieving the object of the present invention, an air grease pump according to the present invention comprises: a cover provided on a grease container; A suction pipe connected to the center of the cover to suck the grease contained in the grease container, an air pump connected to the suction pipe and installed on the cover, a transfer hose connected to one side of the suction pipe for transferring the sucked grease, And a grease gun installed at the transfer hose and discharging grease to the outside; A compression plate disposed under the cover and compressing the grease accommodated in the grease container; An air cylinder having a piston rod penetrating through the cover to move up and down the compression plate and coupled to an upper surface of the compression plate, and a guide bar installed through the cover and coupled to the upper surface of the compression plate, and; And a compressor for supplying compressed air to the air pump and the air cylinder.

Further, in the air grease pump according to the present invention, the compression plate is composed of a compression plate made of an elastic material, an upper plate fixed to the upper surface of the compression plate, and a lower plate fixed to the lower surface of the compression plate, A through hole is formed at the center of the plate, the upper plate, and the lower plate so that the suction pipe can be inserted, and the piston rod and the guide bar are fixed to the upper plate.

Further, in the air grease pump according to the present invention, the compression plate is composed of a core portion having a diameter corresponding to the upper plate, and a shell portion disposed at an outer periphery of the core portion and having a thickness thinner than the core portion, And a receiving groove for receiving the lower plate is formed on a lower surface of the lower portion.

Further, in the air grease pump according to the present invention, the compression plate, the upper plate, and the lower plate are structured so as to be inclined downward from the through hole toward the outer periphery.

Further, in the air grease pump according to the present invention, the lower plate is composed of a circular central portion and a receiving portion extending in a plurality of directions at the central portion, and a plurality of concentric circles Is formed.

According to the air grease pump of the present invention constructed as described above, the air cylinder and the guide bar are provided on the compression plate to compress the grease in the container in accordance with the amount of grease to smoothly pump the grease, So that it is possible to reduce costs and to prevent waste of resources.

The effects of the present invention are not limited to those mentioned above, and other solutions not mentioned may be clearly understood by those skilled in the art from the following description.

1A and 1B are perspective views showing a grease pump according to the present invention.
Fig. 2 is an exploded perspective view of Figs. 1a and 1b.
3A and 3B are perspective views showing a state in which the compression plate of the present invention is lifted and lowered.
Figs. 4A to 4C are longitudinal sectional views of Fig. 3A. Fig.
5A to 5C are perspective views showing a grease pump according to the present invention in 3d.
6 is a cross-sectional perspective view of the grease pump according to the present invention, indicated by 3d.
7A is a bottom perspective view showing the construction of the compression plate of the present invention.
FIG. 7B is a bottom perspective view showing a state in which the concave and convex portions are formed on the compression plate and the lower plate, respectively, corresponding to FIG. 7A.
FIG. 8 is a sectional view showing the operation of the air grease pump to which the compression plate of FIG. 7A is applied.
FIG. 9 is a cross-sectional view showing a state in which the compression plate of FIG.
10 is a perspective view showing a grease pump provided with a limit switch.
11 is a photograph of a conventional grease supply device.

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

In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear. In addition, the terms described below are defined in consideration of the functions of the present invention, and these may vary depending on the intention or precedent of the user. Therefore, the definition should be based on the contents throughout this specification.

In the description of the present invention, the same or similar elements are denoted by the same or similar reference numerals, and a detailed description thereof will be omitted.

Hereinafter, a grease pump according to the present invention will be described in detail with reference to the accompanying drawings.

1 to 6, a grease pump 100 according to the present invention includes a cover 110, a pump module 120, a compression plate 130, a compression plate elevation module, a compressor B, .

The cover 110 is detachably mounted on the grease container to seal the grease container D and is provided with a handle 111 for easy movement.

The pump module 120 pumps the grease C contained in the grease container D and discharges the grease contained in the grease container D through the center of the cover 110, An air pump 122 connected to the suction pipe 121 and installed on the cover 110 and a suction pipe connected to one side of the suction pipe 121 for transferring the inhaled grease, A hose 123 and a grease gun 125 installed at an end of the transfer hose 123 to discharge grease to the outside.

The pump module 120 including the air pump 122 pumps grease using the compressed air supplied from the compressor B and has a structure well known in the art such as disclosed in Korean Patent No. 10-0491756 Therefore, detailed description thereof will be omitted.

The compression plate 130 is disposed directly below the cover 110 and compresses the grease contained in the grease container D. The compression plate 130 is vertically coupled to the compression plate lifting and lowering module.

The compression plate 130 includes a compression plate 136, an upper plate 131 fixed to the upper surface of the compression plate 136, and a lower plate 132 fixed to the lower surface of the compression plate 136.

Since the compression plate 130 is lifted up and down in a state of being fitted in the suction pipe 121 disposed perpendicularly to the center of the grease container D, the compression plate 136, the upper plate 131, A through hole 139 is formed at the center of the suction pipe 132 so that the suction pipe 121 can be inserted.

The compression plate 136 is made of an elastic material such as rubber and has a diameter at least corresponding to the diameter of the grease container so as to be in contact with the inner surface of the grease container D. [

The piston rod 141 and the guide bar 143 are fixed to the upper surface of the upper plate 131.

The lower plate 132 serves to support the compression plate 136 from the lower side as shown in FIG. 7A. The lower plate 132 is fixedly inserted into the receiving groove 137a formed in the lower surface of the compression plate 136, do. The lower plate 132 may include an annular central portion 133 formed with a through hole 139 at the center thereof and a receiving portion 134 extending from the central portion 133 in a plurality of directions.

The compression plate 136 and the upper and lower plates 132 are integrally joined by a fastening member A such as a bolt as shown in FIG.

8, the compression plate 136 includes a core portion 137 having a diameter corresponding to that of the upper plate, a core portion 137 disposed on the outer periphery of the core portion 137 and thinner than the core portion And a shell portion 138 made of a metal.

And a receiving groove 137a for receiving the lower plate may be formed on a lower surface of the core portion 137. [

Generally, the grease container is formed in a cylindrical shape with a diameter decreasing from the upper portion to the lower portion. It is preferable that the shell portion is provided so that it can be easily folded to have a sealing force over the entire height of the grease container. For example, when the thickness of the core portion is 10 mm, it is preferable that the shell portion is formed to have a thickness of 3 to 5 mm so as to be able to descend in close contact with the inner surface of the grease container.

A plurality of concave and convex portions 135 may be formed on the lower surface of the lower plate 132, and the concave and convex portions 135 may be concentric with the through hole 139. However, the concavo-convex portion may be formed in a structure other than the concentric circle depending on the viscosity of the grease. The concavo-convex part 135 serves to prevent the grease from being pushed back when the grease is pumped, and it is also preferable that the concavo-convex part 135 is formed in the support part 134 as well as the center part 133. Since the central portion 133 is annular, the concave and convex portions 135 also have a concentric circular structure. However, it is preferable that the grooves formed in the receiving portion are not concentric, but are formed so as to be concentric with the through holes when the grooves of the adjacent receiving portions are extended, because a plurality of receiving portions are disposed apart from each other.

As shown in FIG. 9, the compression plate 130 preferably has a structure inclined downward from the rim of the through hole 139 toward the outer periphery. When the compression plate is made of a downward inclined cowl structure, the grease collects toward the center of the grease container when the grease is compressed while descending. In particular, when the grease remains only in the vicinity of the bottom of the grease container, the grease must be gathered toward the suction pipe disposed at the center so that pumping can be smoothly performed, so that the remaining amount in the grease container can be minimized.

2, the compression plate lifting and lowering module includes an air cylinder 140 (not shown) having a piston rod 141 which penetrates through the cover to lift the compression plate 130 and engages with the upper surface of the compression plate 130 And at least one guide bar 143 installed through the cover 110 and coupled to the upper surface of the compression plate 130.

The air cylinder 140 receives compressed air from the compressor B and moves up and down the piston rod 141. The structure of the air cylinder is well known and its detailed description is omitted.

4A, since the air pump 122 and the air cylinder 140 are driven at the same time by using the compressed air supplied from one compressor B, And a second air supply pipe 152 branched from the first air supply pipe 151 and supplying compressed air to the air cylinder 140 is installed at one side of the first air supply pipe 151 .

A regulator 153, a valve body 154, and a lift control lever 155 may be installed in the second air supply pipe 152.

The valve body 154 serves to shut off or open the compressed air flowing into the second air supply pipe 152 or to change the flow path. The lift control lever 155 is connected to the valve body 154, To control the operation of the valve body. And compressed air is supplied into the air cylinder 140 via the valve body 154. [

That is, some of the compressed air supplied to the first air supply pipe 151 for pumping grease is supplied to the second air supply pipe 152 to drive the air cylinder 140. The regulator 153 is connected to the second air And serves to adjust the pressure of the compressed air supplied to the supply pipe 152.

The lift control lever 155 can be used when the user lifts the compression plate 130 and then removes the grease pump 100 from the grease container D. [

However, in the present invention, when the operation of the compressor B is stopped, the piston rod 141 is not lowered. In this case, The compression plate 130 does not fall into the grease due to its own weight.

The guide bar 143 is installed to penetrate the cover 110 together with the piston rod 141, thereby allowing the compression plate 130 to move up and down while keeping the compression plate 130 horizontal.

Meanwhile, in the present invention, as shown in FIG. 10, a limit switch 157 may be provided together with the lift control lever 155.

The limit switch 157 may be installed on one side of the upper end of the air cylinder 140 and on the upper side of the cover 110, respectively.

The limit switch 157 is disposed on the moving line of the guide bar 143 and the contact plate 144 is installed on the upper end of the guide bar 143.

When the contact plate 144 comes into contact with the upper or lower limit switch 157, the supply of compressed air to the air cylinder is interrupted, and the piston rod 141, which has been lifted or lowered, is stopped. That is, the contact plate provided on the limit switch and the guide bar serves to limit the vertical range in which the piston rod ascends and descends.

In addition, the present invention may further include a casing 101 installed on the cover to receive the air pump 122 and the air cylinder 140 to protect the components housed therein.

Hereinafter, the operation of the grease pump according to the present invention will be described.

The compressed air is supplied to the air pump 122 and the air cylinder 140 at the same time when the compressor B is operated and the grease is pumped by the air pump 122 while the air cylinder 140 is lowered, Thereby compressing the grease. When the user operates the grease gun 125 to perform the grease injection operation, the piston rod 141 descends as much as the grease contained in the grease container D is reduced, and the compression plate compresses the grease. At this time, since the compression plate 136 constituting the compression plate 130 is folded on the inner surface of the grease container D and is lowered in a close contact state, the grease attached to the inner surface of the grease container is scratched and pressed. When the compression plate 130 is lowered until it is adjacent to the bottom, all the grease at the bottom of the grease container D can be used. At this time, when the compression plate 130 comes into contact with the floor, the contact plate 144 at the upper end of the guide bar 143 comes into contact with the limit switch 157 disposed at the lower portion, and the operation of the air cylinder 140 is stopped. The user lifts the compression plate 130 by operating the lift control lever 155 and then removes the used grease container D and replaces it with a new grease container D. [

The grease pump of the present invention having such a configuration makes it possible to use all of the grease on the bottom of the grease container, and it is convenient to use because of its portability and mobility, and miniaturization can be achieved.

It is to be understood that the invention is not limited to the form set forth in the foregoing description. Accordingly, the true scope of the present invention should be determined by the technical idea of the appended claims. It is also to be understood that the invention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims.

100: grease pump 101: casing
110: cover 111: handle portion
120: pump module 121: suction pipe
122: air pump 123: transfer hose
125: grease gun 130: compression plate
131: upper plate 132: lower plate
133: center portion 134:
135: concave / convex portion 136: compression plate
137: core portion 137a: receiving groove
138: Shell part 139: Through hole
140: air cylinder 141: piston rod
143: Guide bar 143a: Bushing
144: contact plate 151: first air supply pipe
152; Second air supply pipe 153: Regulator
154: valve body 155: lift control lever
157: Limit switch 157a: Bracket
A: fastening member B: compressor
C: Grease D: Grease container

Claims (5)

A cover provided on the grease container;
A suction pipe connected to the center of the cover to suck the grease contained in the grease container, an air pump connected to the suction pipe and installed on the cover, a transfer hose connected to one side of the suction pipe for transferring the sucked grease, And a grease gun installed at the transfer hose and discharging grease to the outside;
A compression plate disposed under the cover and compressing the grease accommodated in the grease container;
An air cylinder having a piston rod penetrating through the cover to move up and down the compression plate and coupled to an upper surface of the compression plate, and a guide bar installed through the cover and coupled to the upper surface of the compression plate, and;
A compressor for supplying compressed air to the air pump and the air cylinder;
And an air pump.
The method according to claim 1,
Wherein the compression plate comprises a compression plate made of an elastic material, an upper plate fixed to the upper surface of the compression plate, and a lower plate fixed to a lower surface of the compression plate,
A through hole is formed in the center of the compression plate, the upper plate, and the lower plate so that the suction pipe can be inserted,
Wherein the piston rod and the guide bar are fixed to the upper plate.
The method according to claim 1,
Wherein the compression plate comprises a core portion having a diameter corresponding to the upper plate and a shell portion disposed at an outer periphery of the core portion and having a thickness thinner than that of the core portion,
And an accommodating groove for accommodating the lower plate is formed on a lower surface of the core portion.
The method according to claim 1,
Wherein the compression plate, the upper plate, and the lower plate have a structure inclined downward from the through hole toward the outer periphery.
The method according to claim 1,
Wherein the lower plate comprises a circular central portion and a receiving portion extending in a plurality of directions at the central portion,
And a plurality of concave and convex portions having a concentric circular structure around the through hole are formed on a lower surface of the lower plate.

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