KR20220148498A - Grease Supply Apparatus - Google Patents

Abstract

The present invention provides a grease supply apparatus that can be used by installing a new grease storage container instead of on-site charging when all the grease is used by using a large-capacity corrugated-type grease storage container capable of supplying grease to a plurality of pump units. In addition, according to the present invention, the grease discharged from the grease storage container is compacted in a grease compaction chamber and introduced into a pump chamber to prevent air bubbles from being generated in the grease.

Description

Grease Supply Apparatus

The present invention relates to a grease supply device that can be applied to various industrial fields, such as electronic equipment industry, robots, semiconductors, nuclear power, steel, papermaking, and automobile manufacturing, to construct a lubrication system.

In general, grease is supplied to the rotational driving part of a mechanical device having a structure in which friction is continuously operated, such as a bearing, to prevent abrasion due to friction, and at the same time to ensure that the mechanical device operates smoothly and performs its function.

As a prior art related to a grease supply device, Republic of Korea Utility Model Registration No. 20-0201377 "Grease injector" (registered on Aug. 21, 2000) has been proposed.

In this prior art, as shown in FIG. 13, grease can be smoothly injected alternately into a plurality of rotating bodies with a single injector, and the grease injector 100 is a control for setting an injection period of grease. a cover 110 having a predetermined diameter provided on the inside of the part 111; The upper part is connected to the cover 110, the receiving groove 120a for accommodating the battery B is recessed inside the upper part, and the compression spring 121 is installed on the outer periphery of the receiving groove 120a. and a cylindrical grease filling part 120 having a pressure flange 122 installed at the lower end of the compression spring 121 to push the grease filled in, and having an external screw 120b formed in the lower part of the outer periphery; A female screw 130a is formed on the inner circumference to be fastened to the male screw 120b, and a grease inlet 130b for discharging grease is formed in the side and lower center thereof, and grease is supplied to one side of the grease inlet 130b. a grease injection part 130 having a nipple 131 installed therein, and a recess 130c having a predetermined depth inwardly formed at a predetermined position on the side; The motor 140 is guided and fixed in the recess 130c, the rotation shaft 141 is installed through the inside of the grease injection part 130, and an eccentric cam 142 of a predetermined diameter is installed on the through rotation shaft 141. )Wow; One side of the eccentric cam 142 is installed horizontally or vertically in contact with the outer periphery, and it consists of a plurality of piston pumps 150 for discharging grease by rotational driving of the eccentric cam 142 .

According to this prior art, the grease should be filled after all the grease is used, but in this case, the grease is directly filled in the grease supply device using a separate filling pump in the field.

Such prior art has a problem in that the grease leaks to the outside, causing environmental pollution, and the grease is wasted.

In particular, in the prior art, there is a high possibility that air is introduced together when filling the grease, and the introduced air is supplied to the pump together with the grease in the form of bubbles, which causes a problem in the operation of the pump.

Meanwhile, as another prior art, Korean Patent Registration No. 10-0282128 "Automatic Lubricating Oil Supply Device" (registered on November 24, 2000) has been proposed. It consists of a main case having a built-in pump that forms an information display window and a nipple fastened to the shaft and substantially controls the quantitative extrusion of lubricant, and a pump is provided inside the main case between the outlet of the lubricant pouch and the nipple, and Lubricating oil is sucked by the plunger shaft lifting and lowering, and it is characterized in that it has a built-in electric motor that lifts and drives the pump so that the sucked lubricating oil is extruded.

In this prior art, only one pump is provided with respect to the lubricating oil pouch in the form of a corrugated barrel to extrude the lubricating oil.

In summary, when grease is supplied by a plurality of pump units in the prior art, the conventional technique is only using the grease in the space inside the grease supply device by field filling.

Also, there are cases in which a lubricating oil pouch in the form of a corrugated barrel is used in the prior art, but this is limited to a case in which a very small amount of lubricating oil is supplied by only one pump.

That is, in the prior art, a technique of using a large-capacity corrugated-type grease storage container and using it to pressurize and discharge grease by a plurality of pump units has not been proposed so far.

Republic of Korea Registered Utility Model No. 20-0201377 "Grease Injector" (Registered on Aug. 21, 2000) Republic of Korea Patent No. 10-0282128 "Automatic Lubricating Oil Supply Device" (Registered on Nov. 24, 2000) Republic of Korea Patent No. 10-0765472 "Grease cartridge and grease supply device having the grease cartridge" (registered on Jan. 2, 2007)

The present invention has been devised to solve the problems of the prior art as described above, and using a large-capacity corrugated grease storage container capable of supplying grease to a plurality of pump units, and using all of the grease, instead of on-site charging We would like to provide a grease supply device that can be used by installing a new grease reservoir.

In addition, the present invention is to solve the problem of malfunction of the pump unit by preventing air bubbles, etc. from being generated when grease is supplied from the grease storage container to the pump unit.

In order to solve the above problems, the present invention provides a grease storage container in the form of a corrugated barrel with grease filled therein and an inlet formed at the bottom, and the grease storage container so that the grease in the grease storage container is discharged to the lower part through the inlet. Storage container mounting unit equipped with a storage container pressurizing means for pressing in the downward direction; A cylindrical shape extending in the vertical direction with a diameter larger than the diameter of the inlet of the grease storage container, disposed below the storage container mounting part, the upper end communicating with the inlet of the grease storage container, and a plurality of grease compaction holes at the lower end a grease compaction chamber equipped with the formed grease compaction plate and provided with a rotatable grease compaction blade on the top of the grease compaction plate; a pump chamber disposed under the grease compaction chamber and provided with a plurality of pump units for pressurizing and discharging the grease introduced through the grease compaction plate to the outside; a motor driving unit for rotationally driving the grease compaction blade; It is characterized in that it includes.

In the above, a rotation shaft extending in the vertical direction along the center of the storage container mounting portion, the center of the grease compaction chamber, and the center of the pump chamber is provided, and the motor driving unit rotationally drives the rotation shaft, and is located at the upper end of the rotation shaft. It is preferable that the first scraper blade for scraping the grease inside the grease storage container is coupled.

In the above, a cone for wing manipulation is formed in the center of the upper end of the grease storage container toward the bottom, and the upper end of the first scraper wing is in contact with the cone for wing manipulation in a vertical posture and is folded while being horizontal. It may be deformed in the posture, and it is preferable that a return spring for elastically restoring the first scraper wing to the vertical posture is provided on the first scraper wing.

In the above, a rotation shaft extending in the vertical direction along the center of the storage container mounting portion, the center of the grease compaction chamber, and the center of the pump chamber is provided, and the motor driving unit rotationally drives the rotation shaft, and an eccentric cam on the rotation shaft is coupled, and the plurality of pump units pressurize and discharge the grease in the pump chamber to the outside by rotational driving of the eccentric cam.

In the above, it is preferable that a heating means having a hollow in which the inlet of the grease storage container is inserted is provided at the lower part of the grease storage container.

In the above, it is preferable that a block for detecting grease flow/blockage provided with a flow sensor for detecting the flow of grease and a blockage sensor for detecting clogging of a grease supply pipe is preferably coupled to the pump unit.

As described above, the present invention uses a large-capacity corrugated grease storage container capable of supplying grease to a plurality of pump units, and installs a new grease storage container after using up all of the grease, thereby reducing environmental pollution. It can prevent and prevent wastage of grease.

In addition, the present invention can solve the problem of malfunction of the pump unit by preventing air bubbles from being generated when grease is supplied from the grease storage container to the pump unit.

1 is a perspective view of a grease supply device according to an embodiment of the present invention;
Figure 2 is a reference photo expressed so that the inside of Figure 1,
3 is a cross-sectional conceptual view of FIG. 1;
4 is an exploded cross-sectional conceptual view of FIG. 3;
5 is a perspective view of the grease storage container of FIG. 3;
Figure 6 is a longitudinal cross-sectional view of Figure 5;
7 and 8 are perspective photos for showing the main parts from the motor driving unit to the first scraper blade,
9 is a plan cross-sectional view that can confirm the inside of the pump room;
10 is a conceptual plan view to show the operation of the pump unit by the eccentric cam;
11 is a cross-sectional conceptual view of a state in which the upper end of the grease storage container is located at the lowest position as a view equivalent to FIG. 3;
12 is a view showing an application form of the present invention;
13 is a prior art diagram;

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those of ordinary skill in the art can easily implement them. However, the present invention may be embodied in several different forms and is not limited to the embodiments described herein. And in order to clearly explain the present invention in the drawings, parts irrelevant to the description are omitted, and similar reference numerals are assigned to similar parts throughout the specification.

Throughout the specification, when a part "includes" a certain component, it means that other components may be further included, rather than excluding other components, unless otherwise stated.

1 is a perspective view of a grease supply device according to an embodiment of the present invention, FIG. 2 is a reference photograph expressing the inside of FIG. 1 to be seen, FIG. 3 is a cross-sectional conceptual view of FIG. 1, and FIG. 4 is the separation of FIG. It is a cross-sectional conceptual view, FIG. 5 is a perspective view of the grease storage container of FIG. 3 , FIG. 6 is a longitudinal cross-sectional view of FIG. 9 is a plan cross-sectional view that can confirm the inside of the pump room, FIG. 10 is a conceptual plan view for showing the operation of the pump unit by the eccentric cam, and FIG. is a cross-sectional conceptual view of the lowest position, and FIG. 12 is a view showing an application form of the present invention.

This grease supply device is largely composed of a case body 110 , a case cover 120 , a level sensor 130 , a pressure plate 140 , a grease storage container 150 , a heating means 160 , a grease compaction plate 170 , Pump chamber 180, grease flow/blockage detection block 190, motor driving unit 210, rotating shaft 220, eccentric cam 230, grease compaction blade 240, first and second scraper blades 251, 252 ), the display unit 300, and the like.

As shown in FIG. 4 , the case body 110 is made of a transparent material and has an open top and bottom cylindrical shape.

The storage container mounting part 111 has a cylindrical shape with a large diameter, and the grease compaction chamber 112 has a cylindrical shape with a small diameter.

A grease storage container 150 is mounted on the storage container mounting part 111 , a heating means 160 is provided at a lower end of the grease storage container 150 , and a pressing plate 140 is provided at an upper end of the grease storage container 150 .

The grease storage container 150 is filled with grease and has a corrugated barrel shape with an inlet 151 formed at the lower portion.

In this embodiment, the grease storage container 150 (Lubricant Bellows Container) is in the form of a translucent bellows.

While the maximum capacity of the conventional corrugated grease storage container is only 700 g, the filling capacity of the present grease storage container 150 is about 5 to 15 kg, which is a large capacity.

This is because the conventional corrugated grease storage container is used in a grease supply device that supplies grease by only one pump, whereas the present grease supply device is for supplying grease by a plurality of pump units 181 . to be.

A handle 152 is formed on the outside of the upper portion of the grease storage container 150 convexly upward to enable convenient movement in consideration of the large capacity of the grease storage container 150 (see FIG. 5 ).

In addition, a cone 153 for wing operation in the form of a pointed cone is formed in the center of the upper end of the grease storage container 150 (see FIG. 6 ).

The wing operation cone 153 is to minimize the amount of grease remaining in the grease storage container 150 at the time of replacement of the grease storage container 150 . This will be described later.

A pressing plate (140, weight disc) is disposed at the upper end of the grease storage container (150).

The pressure plate 140 is a type of storage container pressurizing means, and its weight is about 10 kg, is placed on the top of the grease storage container 150 and presses the grease storage container 150 downward with its own load, thereby The grease in the storage container 150 is discharged to the lower side through the inlet 151 .

In some cases, the storage container pressing means may adopt a pressing spring instead of the pressing plate (140).

The heating means 160 is provided under the grease storage container 150 .

The heating means 160 has a hollow 161 formed in the center, and is coupled while the inlet 151 of the grease storage container 150 is inserted into the hollow 161 of the heating means 160 .

The hollow 161 of the heating means 160 is formed in the form of a female screw, and the inlet 151 of the grease storage container 150 is formed in the form of a male screw, and both are screwed together.

The heating means 160 of this embodiment is a heating pack, and consists of a heater frame and a heating cable disposed along the inside of the heater frame, and the heating means 160 has a ring shape due to the hollow 161 . do.

In the heating means 160, when a temperature value below a set temperature is sensed by the temperature sensor in winter, the heating cable operates to prevent the grease from freezing.

The case cover 120 is mounted on the open upper end of the case body 110 to cover the upper end of the case body 110 .

A level sensor 130 is provided in the central portion of the case cover 120 .

In this embodiment, the level sensor 130 is an ultrasonic sensor, and it is possible to check the upper level of the grease storage container 150 through a predetermined analog numerical value sensed by sending an ultrasonic signal to the lower part, thereby confirming the remaining amount of grease, , the remaining amount of grease is displayed on the display unit 300 to be described later.

A grease compaction plate 170 is mounted on the lower end of the case body 110 to form a grease compaction chamber 112 together with the grease compaction plate 170 .

The grease compaction chamber 112 has a cylindrical shape extending in the vertical direction, and has a larger diameter than the diameter of the inlet of the grease storage container 150 .

The grease compaction chamber 112 has a diameter corresponding to a pump chamber 180 to be described later, and the pump chamber 180 has a diameter large enough to install a plurality of pump units 181 .

The grease compaction chamber 112 has its upper end in communication with the inlet 151 of the grease storage container 150 to receive the grease discharged from the grease storage container 150 .

In addition, a grease compaction plate 170 having a plurality of grease compaction holes 171 is mounted at the lower end of the grease compaction chamber 112 , and the grease is compacted and discharged to the lower pump chamber 180 through the grease compaction plate 170 . do.

A grease compaction blade 240 is rotatably provided on the upper portion of the grease compaction plate 170 , and a plurality of grease compaction plates 170 are provided while compacting the grease in the grease compaction chamber 112 while the grease compaction blade 240 is rotated. Drain the compacted grease through the grease compaction hole 171 of The shape of the grease compaction blade 240 may be variously modified.

Since such grease flows into the pump chamber 180 through the plurality of grease compaction holes 171 in the state of being compacted by the grease compaction blade 240 in the grease compaction chamber 112 , generation of air bubbles can be minimized.

A pump chamber 180 is provided at a lower portion of the case body 110 . That is, the pump chamber 180 is disposed under the grease compaction plate 170 .

A plurality of pump units 181 for pressurizing and discharging the grease introduced through the grease compaction plate 170 to the outside are provided in the pump chamber 180 .

In FIG. 10 , only two pump units 181 positioned symmetrically with respect to the eccentric cam 230 are shown in order to explain the operation of the pump unit 181 .

Each pump unit 181 has a pump body 181a having an inlet 181b formed on its side, a check valve 181c disposed on an outlet side of the pump body 181a, and one side of the pump body 181a. A piston 181d that is slidable with respect to the eccentric cam 230 and the other side is in contact with the eccentric cam 230, and a spring 181e that elastically supports the piston 181d.

Therefore, when the eccentric cam 230 rotates in an eccentric state by the rotation of the rotating shaft 220, the piston 181d of each pump unit 181 in contact with the eccentric cam 230 reciprocates, and the piston 181d ), the pump unit 181 sucks and discharges a certain amount of grease according to the reciprocating motion.

That is, when the piston 181d moves away from the pump body 181a by the spring 181e as shown in the enlarged view on the right of FIG. 10 , the grease flows into the pump body 181a through the inlet 181b, the left side of FIG. As shown in the enlarged view, when the piston 181d is moved toward the pump body 181a by the eccentric cam 230, the grease inside the pump body 181a is pressurized and discharged while pushing the check valve 181c.

Driving the plurality of pump units by the eccentric cam as described above is omitted in detail because a wide variety of methods are applied in the prior art.

A motor driving unit 210 for rotationally driving the grease compaction blade 240 and the like is provided at a lower portion of the pump chamber 180 . That is, a motor room in which the motor driving unit 210 is built is provided under the pump room 180 .

The rotating shaft 220 rotationally driven by the motor driving unit 210 extends in the vertical direction along the center of the storage container mounting unit 111 , the center of the grease compaction chamber 112 , the center of the pump chamber 180 , and the center of the motor chamber. do.

A first scraper blade 251 for scraping the grease inside the grease storage container 150 is coupled to the upper end of the rotation shaft 220 .

In this embodiment, the first scraper wing 251 may be deformed to a horizontal posture while the upper end is folded in contact with the wing manipulation cone 153 in a vertical posture, and the first scraper wing 251 has a first scraper wing A return spring (251a) for elastically restoring the (251) to the vertical posture is provided. In this embodiment, the return spring 251a is a torsion spring.

That is, when there is no external force, the first scraper blade 251 is rotated together with the rotation shaft 220 in a vertical posture as shown in FIG. 3 to agitate the grease inside the grease storage container 150 and scrape off the grease in the central part.

In addition, when a certain amount of grease is exhausted and the upper surface of the grease storage container 150 descends to a certain height, that is, when it is time to replace the grease storage container 150, the first scraper blade 251 in a vertical posture stores the grease. As the upper surface of the grease storage container 150 descends as it comes into contact with the wing manipulation cone 153 of the container 150, it is folded in a horizontal position and rotated in a deformed state as shown in FIG. The remaining grease is completely scraped off. And when the new grease storage container 150 is replaced, the first scraper blade 251 is restored to its original vertical posture by the return spring 251a.

Accordingly, when the grease storage container 150 is replaced, the amount of residual grease in the grease storage container 150 can be minimized.

In addition, the second scraper blade 252 for scraping the grease of the inlet 151 of the grease storage container 150 is coupled to the upper end of the rotation shaft 220 .

In addition, the grease compaction blade 240 is coupled to the rotation shaft 220 passing through the grease compaction chamber 112 .

In addition, the eccentric cam 230 is coupled to the rotation shaft 220 passing through the pump chamber 180 .

As described above, the plurality of pump units 181 pressurize and discharge the grease in the pump chamber 180 to the outside by the rotational driving of the eccentric cam 230 .

A block 190 for detecting grease flow/blockage is provided at the rear end of each pump unit 181 (based on the path through which the grease is discharged), and a block 190 for detecting grease flow/blockage is provided. A flow detection sensor for detecting the flow (flow amount) of the grease discharged from the pump unit 181 and a blockage detection sensor for detecting clogging of the grease supply pipe are provided together.

A touch panel type display unit 300 for displaying various types of information is provided outside the grease supply device.

The display unit 300 has a built-in control function to enable control and monitoring of the pump unit.

The display unit 300 can check each lubrication state in real time for up to 20 lubrication points, thereby protecting equipment and detecting problems caused by insufficient lubrication or super-lubrication in advance to take action.

The display unit 300 may receive a signal from the block for detecting grease flow/blockage and monitor it in real time.

In addition, the display unit 300 may receive a signal from the level sensor 130 to check the correct remaining amount of grease.

In addition, in the display unit 300, the operation target operation sensor, level sensor, heating means, heater pack temperature sensor, motor, motor operation sensor, pump oil supply, pipe clogging, and bellows replacement according to the specified fault condition and whether the contact points of various sensors are detected. You can check the operating status and errors of the system, etc.

The operation of the present grease supply device as described above will be described.

The rotating shaft 220 is rotationally driven by the motor driving unit 210 , and the eccentric cam 230 , the grease compaction blade 240 , and the first and second scraper blades 251 and 252 coupled thereto according to the rotation of the rotation shaft 220 . ) rotates.

In addition, as the grease storage container 150 is pressed by the weight of the pressing plate 140 , the grease in the grease storage container 150 flows into the grease compaction chamber 112 through the inlet 151 , and the rotating grease compaction blade 240 . ), the grease is compacted and introduced into the pump chamber 180 through the grease compaction hole 171 of the grease compaction plate 170 .

The grease introduced into the pump chamber 180 is lubricated through the grease flow/blockage detection block 190 by the pump unit 181 operated by the eccentric cam 230 rotating together with the rotation shaft 220 to the desired lubrication location. is supplied to

At this time, the first and second scraper blades 251 and 252 serve to scrape the grease down to the lower portion, and in particular, the first scraper blade 251 serves to minimize residual grease in the grease storage container 150 .

According to the present invention, the lubricant can be directly supplied to the lubrication point from the plurality of pump units 181 , and can be used in direct connection from a minimum of one place to a maximum of 20 places as shown in FIG. 12 .

According to the present invention, the discharge amount may be different for each pump unit. For example, by adopting a pump unit with three different discharge rates, it is possible to select and apply an appropriate pump unit according to the situation of the field.

If the amount of lubrication at each lubrication point is determined according to the discharge amount of each pump unit, the overall lubrication system can be a very simple, accurate and reliable system.

Such a lubrication system may detect whether the equipment to be lubricated is operated, and may cause the lubrication system to operate for a certain period or number of times specified in the control system.

That is, it is possible to operate the lubrication system by receiving the sensing object (sensing) and the sensor at the same time as the reduction gear outlet shaft or the driving part of the lubrication target equipment, and receive operation information and operation information of the lubrication target equipment.

When the sensor detects a signal, the system is activated a certain number of times or period specified by the control system.

A flow sensor of the block 190 for detecting the flow of grease/clogging installed at the rear end of the pump unit 181 detects the amount of grease flow.

Therefore, it is possible to measure the amount of oil supplied by the contact between the motor operation amount (motor operation sensor) and the flow sensor.

There is a sensor that detects the motor rotation inside the motor case, so you can measure the amount of rotation of the motor or check whether there is a malfunction.

The present invention can build a lubrication system applicable to complex equipment operation systems due to industrial automation.

Conventional grease supply devices have problems such as environmental pollution, waste of grease, and air inflow by filling the tank of the grease supply device with grease using a filling pump. Since the storage container is directly mounted, the on-site charging operation becomes unnecessary, and the problem of the on-site charging of the prior art can be solved at once.

The foregoing description of the present invention is for illustration, and those of ordinary skill in the art to which the present invention pertains can understand that it can be easily modified into other specific forms without changing the technical spirit or essential features of the present invention. will be. Therefore, it should be understood that the embodiments described above are illustrative in all respects and not restrictive. For example, each component described as a single type may be implemented in a distributed manner, and likewise components described as distributed may also be implemented in a combined form.

The scope of the present invention is indicated by the following claims rather than the above detailed description, and all changes or modifications derived from the meaning and scope of the claims and their equivalent concepts should be interpreted as being included in the scope of the present invention. do.

110: case body 111: storage container mounting part
112 : Greek compaction room
120: case cover
130: level sensor
140: press plate (storage container pressurizing means)
150: grease storage container 151: entrance
152: handle 153: cone for wing operation
160: heating means (heater pack)
170: grease compaction plate 171: grease compaction hole
180: pump chamber 181: pump unit
190 : Block for grease flow/blockage detection
210: motor driving unit
220: rotation shaft
230: eccentric cam
240 : Greek Compact Wings
251: first scraper wing 251a: return spring
252: second scraper wing
300: display unit

Claims (6)

A grease storage container in the form of a corrugated barrel filled with grease and having an inlet formed at the bottom, and a storage container pressurizing means for pressing the grease storage container downward so that the grease in the grease storage container is discharged to the lower part through the inlet is installed storage container mounting part;
A cylindrical shape extending in the vertical direction with a diameter larger than the diameter of the inlet of the grease storage container, disposed below the storage container mounting part, the upper end communicating with the inlet of the grease storage container, and a plurality of grease compaction holes at the lower end a grease compaction chamber equipped with the formed grease compaction plate and provided with a rotatable grease compaction blade on the top of the grease compaction plate;
a pump chamber disposed under the grease compaction chamber and provided with a plurality of pump units for pressurizing and discharging the grease introduced through the grease compaction plate to the outside;
a motor driving unit for rotationally driving the grease compaction blade;
A grease supply device comprising a.
The method of claim 1,
A rotation shaft extending in the vertical direction along the center of the storage container mounting part, the center of the grease compaction chamber, and the center of the pump chamber is provided, and the motor driving unit rotationally drives the rotation shaft, and the grease storage container is located at an upper end of the rotation shaft. A grease supply device, characterized in that the first scraper blade for scraping the grease inside is coupled.
3. The method of claim 2,
A cone for wing manipulation is formed in the center of the upper end of the grease storage container, and the upper end of the first scraper wing is in contact with the cone for wing manipulation in a vertical posture and is folded to be transformed into a horizontal posture. and a return spring for elastically restoring the first scraper blade to a vertical posture is provided on the first scraper blade.
The method of claim 1,
A rotation shaft extending in the vertical direction is provided along the center of the storage container mounting portion, the center of the grease compaction chamber, and the center of the pump chamber, the motor driving unit rotationally drives the rotation shaft, and an eccentric cam is coupled to the rotation shaft, and the plurality of pump units pressurize and discharge the grease in the pump chamber to the outside by rotational driving of the eccentric cam.
The method of claim 1,
and a heating means having a hollow formed therein into which an inlet of the grease storage container is inserted is provided at a lower portion of the grease storage container.
The method of claim 1,
The pump unit is provided with a grease flow/blockage detection block provided with a flow detection sensor for detecting a flow of grease and a blockage detection sensor for detecting clogging of a grease supply pipe.

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