KR20020036399A - Grease feeder - Google Patents

Abstract

PURPOSE: A grease feeder is provided to easily supply grease having a high viscosity such that grease is not sticked to a peripheral wall of a grease feeding vessel by feeding grease using a grease feeding pump. CONSTITUTION: A grease feeder comprises a grease feeding vessel(10) and a grease feeding pump(12) inserted into the grease feeding vessel(10) so as to upwardly convey grease. The grease feeding vessel(10) is formed at an underside thereof with a slot(11). A piston ring(14) is movably installed in the grease feeding vessel(10). A lid(16), through which the grease pump(12) passes through, is provided at an upper end portion of the grease feeding vessel(10). A supporting plate(18) is attached to a lower end of the grease feeding vessel(10). A pressurized air injection hole(20) is formed in the lid(16) so as to inject pressurized air for lowering the piston ring(14) in the grease feeding vessel(10).

Description

Grease Feeder {GREASE FEEDER}

TECHNICAL FIELD The present invention relates to a grease feeder, and more particularly, to a grease feeder in which grease remaining in a grease container is continuously and completely supplied with grease as the piston reciprocates. In particular, the present invention is advantageously used to supply grease with high viscosity.

Conventionally, in order to supply grease to machinery, grease contained in cans was injected into a pump, and a pump was operated by manual operation. This conventional grease injection method has a problem in that a lot of manpower is consumed in grease supply. In order to improve the problems of the conventional grease injection method, a method of supplying grease to a pump by inserting grease into a large container and inserting a pump into the grease has been attempted, and such grease supply method is still used. However, the method of injecting grease into a large container and injecting a pump into the grease not only supplies all the grease contained in the container, but also lacks grease at the point where a high viscosity grease is introduced into the machine. Since air is introduced together and grease compression is not good, the pressure drops markedly and some grease remains in the container, and high viscosity grease remains attached to the main wall of the container. It was.

In addition, the conventional grease feeder has a problem that the grease is intermittently supplied rather than continuously supplied by the operation of the pump.

Therefore, there is no grease that is disposed on the main wall of the grease container and there is a need for a grease feeder capable of supplying highly viscous Christ more smoothly as the grease in the container is supplied without mixing grease and air into the machine.

SUMMARY OF THE INVENTION An object of the present invention is to provide a grease feeder capable of supplying highly viscous Christie smoothly while all the grease in the vessel is supplied so that there is no grease disposed on the main wall of the grease vessel.

Another object of the present invention is to provide a grease feeder that is continuously supplied since grease is introduced into the machine and ambient air and grease are intermittently supplied together.

The object of the present invention described above is achieved by a grease feeder comprising a grease container including a piston which is brought into close contact with the inner circumferential wall of the container and a grease supply pump extending to the bottom of the grease container and transferring grease to the grease supply pipe. do.

Another object of the present invention described above is to form a grease compression chamber inside the grease supply pump so that grease introduced into the supply pipe of the grease supply is momentarily compressed into the grease compression chamber and continuously supplied even when the piston descends. One is achieved by the grease feeder of the present invention.

1 is a perspective view of a grease injector of the present invention,

2 is a longitudinal sectional view showing an operating state of a grease injector according to the present invention;

3 is a longitudinal sectional view showing an operating state of a grease injector according to the present invention;

4 is an enlarged bottom view showing the grease injection path of the grease injector shown in FIG.

Figure 5 is an enlarged view of the upper end showing the compressed air flow path when the piston rises,

Figure 6 is an enlarged view of the upper end showing the compressed air flow path when the piston descends,

7 is an exploded perspective view of the compression valve;

8 is a cross-sectional view taken along line VIII-VIII of FIG. 2;

9 is an exploded perspective view of the compressed air switching valve;

Fig. 10 is a sectional view of a grease container showing another form of the present invention.

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

10 ... Grease supply box 11 ... Home 12 ... Grease supply pump 14 ... Piston ring

22 Grease feeding section 23 Grease compression section 24 Grease discharge section

26 Compressed air switching part 27 Lifting operation part 30 Lower cylinder 31 First compression pipe

32 ... 2nd compression line 34 ... lower piston rod 40 ... washer

42 Compression valve 44 Compression piston 44a

45a, 45b ... Greece distributor 46 ... Ball valve 47 ... Spring

61.Compressed air distribution chamber 62 ... Operating wheel 63 ... Upper piston rod

66.Upper piston 76 ... Compressed air changeover

78a, 78b ... Compressed air channel 78c ... Compressed air outlet

80 ... valve plate

The present invention includes a grease container sealed with a sealing lid, a grease supply pump inserted through the sealing lid inside the aforementioned container, and a piston ring for lifting up and down in close contact with the inner circumferential wall of the grease container.

The container is sealed by a sealing lid, in which a grease supply pump is inserted and fixed and a compressed air inlet tube can be attached. If necessary, a pressure gauge may be installed on the sealing lid. The piston ring is raised and lowered in close contact with the inner circumferential wall of the sealing lid. When grease is supplied, the piston ring is gradually lowered by compressed air supplied from the compressed air inlet tube attached to the sealing lid or by a spring installed on the upper part of the piston ring. The piston ring may be lowered due to the vibration generated during operation of the grease supply pump, and may be caused by a negative pressure phenomenon beneath the piston ring of the container according to the supply of grease. It may descend naturally. Most preferably, however, the use of compressed air or springs or the insertion of heavy objects onto the piston rings forcibly lowers the piston rings.

In addition, it is preferable that the bottom of the container is formed with a groove into which the lower end of the grease supply pump is inserted. This groove serves to ensure that the grease lowered by the piston ring is finally collected and transferred to the grease supply pump.

The grease supply pump is composed of a grease feeding part and a compression part inserted into the container, and a compressed air switching part and a piston actuating part located above the grease supply container. The grease pressurization section consists of a lower piston rod having a washer installed inside the lower cylinder. This lower piston rod was connected to the upper piston of the lifting actuation portion whose upper end constitutes the upper end of the grease pump. And the lower end was inserted into the groove formed in the bottom of the grease supply container, and a grease injection hole was formed in the main wall of the lower end. According to this configuration, since the final grease remaining in the grease supply cylinder is pushed into the groove by being pushed into the piston ring and then pumped by the washer, no grease remains in the grease supply cylinder.

The grease compression section is composed of a first compression section consisting of a first compression pipe having a compression valve surrounding the piston rod and a second compression section including a compression piston which is brought into close contact with the inner circumferential surface of the second compression pipe. The compression piston in the second compression pipe has a longitudinal shaft hole, and a transverse grease discharge flow path and a grease inflow flow path are formed at the upper end and the lower end, and a ball valve is installed at the upper end to prevent backflow of grease. . The compression valve and the compression piston of the grease compression section rise with the grease when the grease is introduced into the inside by the washer installed at the bottom of the piston rod, but the compression piston and the ball valve are also lowered when the piston rod descends. At this time, pressure is applied to the upper end of the compression valve by the grease rising along the outer circumferential surface of the compression valve, and at the same time, the lower grease flow hole is blocked at the same time, and the pressure is instantaneously formed above the compression valve to compress the grease above the valve. It serves to discharge slowly in a steady state.

The grease outlet was bolted to the vessel lid. This grease discharge part has a grease discharge hole for supplying the grease supplied from the grease compression part to the place requiring the grease.

At the upper end of the connecting pipe, a lift air operating unit consisting of a compressed air switching unit having a compressed air distribution chamber for introducing and discharging air into the upper air compression chamber and an upper cylinder having an upper piston was installed. In the compressed air distribution chamber, a switching valve for distributing compressed air and a switching valve for operating the aforementioned switching valve are installed. The compressed air switching valve is formed with a compressed air flow passage connected to the upper and lower portions of the upper piston and a compressed air discharge hole for discharging the compressed air to the outside.

When the upper piston lifts and lowers, the operating wheel moves up and down, thereby elevating the switching valve in the distribution chamber so that the compressed air flow path is connected to the upper and lower piston rods and the piston moves up and down by the pressure of the compressed air.

Above the compressed air distribution chamber, an upper piston is provided in a piston cylinder sealed to be sealed from the compressed air distribution chamber. The piston was lifted by compressed air supplied up and down in the distribution chamber as previously described, and the piston rod was connected to the lower piston rod to draw up the grease as it rose.

Hereinafter, the present invention is described in detail with reference to the drawings.

1 and 2, the grease supply device of the present invention includes a grease supply cylinder 10 and a grease supply pump 12 inserted into the grease supply cylinder 10 to upwardly convey grease. The grease supply cylinder 10 has a groove 11 at the bottom thereof, and a piston ring 14 is installed inside the cylinder supply cylinder 10 so as to be able to move up and down along the inner circumferential wall of the grease supply cylinder 10. The upper end of the grease supply container 10 is provided with a lid 16 through which the grease pump 12 penetrates, and a support plate 18 is attached to the lower end. The lid 16 is formed with a compressed air inlet 20 for injecting compressed air for lowering the piston ring 14 inside the grease supply container 10.

According to the grease supply cylinder 10 of the present invention described above, the grease buried in the inner circumferential wall of the grease supply cylinder 10 is formed on the bottom while the internal grease piston ring 14 is lowered by the air pressure applied from the upper piston. Since it is pushed into the groove 11, all of the grease can be supplied by the pump 12.

The grease pump 12 is inserted into the grease supply container 10 and grease press section 22 for pressurizing the grease upward, grease press section 23 and connecting portion 28 coupled to the top of the grease press section 22, and Of the grease discharge part 24 and the grease discharge part 24 having a grease discharge hole 55 fixed to an upper surface of the lid 16 of the grease supply container 10 and coupled to an upper end of the connection part 28 described above. Compressed air switching unit 26 is coupled to the upper end and the lift air operating unit 27 is coupled to the upper end of the compressed air switching unit 26.

The grease presser 22 includes a lower cylinder 30 having a grease inlet hole 36 formed at a lower end thereof, and a lower piston rod 34 having a grease presser washer 40 installed in the cylinder 30. The grease pumping unit serves to pump up the grease introduced into the lower cylinder 30 through the grease inlet hole 36 by the lifting operation of the lower piston rod 34 to upwardly pump the grease.

The grease compression unit 23 is a compression valve 42 for lifting up and down surrounding the first compression pipe 31 coupled to the upper end of the lower cylinder 30 and the lower piston rod 34 extending to the inside of the first compression pipe, and Compression piston having a second compression pipe 32 coupled to the upper end of the first compression pipe 31 described above and a shaft hole 44a installed inside the second compression pipe 32 and coupled to the lower piston rod 34. It consists of 44. The first compression pipe 31 described above has a hole through which the piston rod 34 having a diameter larger than the outer diameter of the lower piston rod 34 penetrates, so that the grease moves upward out of the piston rod 34. .

The outer diameter of the compression valve 42 is smaller than the inner diameter of the first compression pipe 31 so that the grease moves upward between the first compression pipe and the piston rod. A groove 42a through which grease can pass is formed at the upper end of the compression valve. (See FIG. 7) The compression valve 42 described above rises simultaneously when grease is introduced as the piston rod 34 rises. When the grease flows upward but the rising of the piston rod 34 reaches the top dead center, the grease flows down to the instantaneous pressure and blocks the grease flow path formed at the lower end of the first compression pipe 31 to generate instant grease compression in the compression chamber. To do that.

The above-described compression piston 44 is installed to move up and down in close contact with the inner circumferential surface of the second compression pipe 32, the transverse grease distribution hole (45a) connected to the shaft hole (44a) at the top and bottom, respectively ( 45b) was formed, and a ball valve 46 for opening and closing the grease flow hole 45b was elastically supported by the spring 47 at the upper end. When grease flows upward as the lower piston rod 34 rises, the grease flows upward through the flow hole 45a, the shaft hole 44a, and the grease flow hole 45b, so that the grease can be discharged. When the 34 is lowered, it is closed by the spring 47 to prevent the reverse flow of grease and to generate a momentary pressure inside the first compression pipe 31. This instantaneous pressure thus serves to allow the grease to be discharged even during the lowering of the piston rod 34.

The above-mentioned connection part 28 is coupled to the upper end of the second compression pipe 32 and to the lower end of the grease discharge part 24 bolted to the lid 16 of the grease supply container. In addition, the upper end of the compression piston 44 is coupled to the connecting rod 54 in the grease discharge part 24 by the connecting rods 52 and 53.

The grease outlet 24 consisted of a connecting tube having grease outlet holes 55 and was bolted to the upper surface of the lid 16 of the grease supply container 10.

The operating part 13 is coupled to the upper end of the above-described grease discharge part 24.

The actuating section 13 is composed of a compressed air switching section 26 and a lifting actuating section 27 for receiving and distributing compressed air. The compressed air switching unit 26 has a tubular sheath 60 having a compressed air distribution chamber 61 therein, and the compressed air distribution chamber 61 and the grease discharge chamber 24a formed thereunder are Although grease was blocked from passing through, the connecting rod 54 was able to move up and down.

In the distribution chamber 61, an operating wheel 62 is installed in a small diameter portion of the upper piston rod 63, and the operating wheel 62, along with the upper piston 66, allows the upper piston rod 63 to move up and down. Has two working pieces 68a, 68b, which are elastically displaced by the jaws 64a, 64b formed in the piston rod, and the working pieces 68a, 68b have an outer shell 60. It was elastically supported by the spring 72a, 72b installed in the spring support (70a, 70b) coupled to the.

5, 6, 8, and 9, the compressed air inlet 74 is formed in the outer shell 60 of the compressed air switching unit 26, and the compressed air compressed air switching valve 76 is attached. Compressed air The compressed air switching valve 76 has two compressed air flow paths 78a, 78b and compressed air discharge holes 78c, and the valve plate 80 has a compressed air switching valve 76 on its inner surface. (See Fig. 9). The outer shell 60 of the compressed air switching unit 26 is combined with the upper cylinder 84, which is connected to the upper cylinder 84. The upper piston 66 is installed inside the upper piston 66, and the upper piston rod 63 of the upper piston 66 is connected to the lower piston rod as described above. Therefore, when the upper piston 66 is elevated, the connecting rods connected to the upper piston rod 63 and the compression piston 44 and the lower piston rod 34 in the second compression pipe 32 are elevated.

The compressed air flow path 78a formed in the above-described compressed air switching valve 76 is connected to the lower portion of the piston of the upper cylinder 84 through the flow path 60a formed in the shell 60, and the compressed air flow path 78b. ) Is connected to the inside of the cylinder 84 above the upper piston through an external air distribution tube 88.

The valve plate 80 described above has a jaw formed at the upper and lower ends of the operating wheel 62 when the operating wheel 62 is caught and lifted by the jaws 64a and 64b formed at the upper and lower ends of the upper piston rod 63. 62a) and 62b are lifted and lifted to switch the above-described flow paths 78a and 78b to be connected to the air outlet 78c and the compressed air distribution chamber 61, respectively. The valve plate 80 has a compressed air flow path 80a which is a long groove on the surface in contact with the compressed air switching valve 76. When the valve plate 80 is raised, the groove 80a is a flow path 78a. ) And the discharge hole (78c) is connected and descended when the flow path (78b) and the discharge hole (78c) is connected.

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

When the compressed air is injected into the compressed air distribution chamber 61 through the compressed air inlet 74 as shown in FIG. 5 while grease is contained in the grease supply cylinder 10 as shown in FIG. The inlet port 36 is formed by raising the upper piston 66 while being injected under the upper piston 66 through the flow passages 78a and 60a and simultaneously raising the lower piston rod 34 connected to the upper piston rod 63. The grease introduced into the outer tube is raised through the pump. This grease pushes up the compression valve 42 and lifts it up, and enters and discharges the grease outlet 24 through the ball valve 46.

As shown in Fig. 2, the lower jaw 62b formed on the outer circumferential surface of the actuating wheel 62 is pushed up by the actuating wheel 62 being pushed up by the jaw 64a immediately before the upper piston 66 reaches the top dead center. 80 will be pushed up. When the valve plate 80 is raised, the inside of the compression chamber 61 and the compressed air flow passage 78a are blocked, and at the same time, the compressed air flow passage 78a and the compressed air discharge hole 78c are connected to the lower portion of the upper piston 66. Air is discharged, and the air distribution pipe 88 and the compression chamber 61 are connected to each other, so that the compressed air distribution path 78b and the air distribution pipe 88 are connected to the inside of the distribution chamber 61, Compressed air enters the upper portion of the piston 66 through the air distribution pipe 88 and starts to lower the piston. At the same time, when compressed air is injected into the grease supply cylinder 10 through the compressed air inlet 20, the piston ring 14 gradually descends while sweeping off the grease on the main wall of the grease supply cylinder.

Since the discharge capacity of the grease discharge hole is smaller than the unit capacity that grease is transferred to the discharge hole, when the grease rises along the outer circumferential surface of the compression valve while the upper piston 66 is raised, pressure is generated at the upper end of the compression valve. Due to this pressure, the compression valve instantly descends and contacts the small-diameter portion of the outer tube formed below to block the injection of grease, and at the same time, a pressure is formed above the compression valve, thereby lowering the upper piston 66. Grease will be released slowly during the process. Therefore, the grease is discharged continuously during the lowering of the upper piston.

As the upper piston 66 descends and the operating wheel 62 is lowered by the jaws 64b formed on the upper piston rod 63 immediately before reaching the bottom dead center of the piston, the upper wheel 66 is lowered by the jaws 62a of the operating wheels. When the valve plate 80 descends, the piston lower portion and the compression chamber 61 are connected, and the piston upper portion is connected to the discharge hole 78c through the distribution pipe 88 so that the piston can be raised. Then, the compressed air supplied to the compressed air inlet 74 is supplied to the lower portion of the upper piston 66 so that the piston 66 is raised to raise the washer 40 coupled to the lower piston rod 34 to raise grease. do.

Fig. 10 shows another form of the grease supply cylinder 10 according to the present invention, in which the grease supply cylinder is provided with a spring 90 for lowering the piston ring 14 on top of the piston ring 14. According to this configuration, the piston ring is lowered by the spring 90 while the grease inside the grease supply container is discharged. Even without applying pressure to the piston ring 14 by compressed air or a spring, the piston ring 14 may be lowered due to self-vibration and negative pressure under the piston ring 14 due to discharged grease.

According to the present invention described above, since the piston ring 14 is lowered by the force of compressed air or a spring, the piston ring 14 collects in the groove 11 formed on the bottom by scraping off the Christ on the circumferential wall of the grease supply container 10. (10) Since the grease in the inside is all supplied by the grease pump inserted therein, there is an effect that there is no grease disposed with the grease supply container.

In particular, according to the present invention, a compression piston 44 having a compression valve 42 and a ball valve 46 acting as a reverse valve is installed inside the grease supply pump, so that the instantaneous compression of grease in the compression valve chamber is achieved. As a result, grease is supplied continuously regardless of the elevation of the central piston.

Claims (8)

In a grease feeder in which a grease supply pump is inserted into a grease supply container to supply grease to the grease supply pump, a piston ring (14) which moves up and down along the inner circumferential surface of the grease supply container is sealed inside the grease supply container (10). Grease supply bottle, characterized in that it is inserted. The grease feeder according to claim 1, wherein the grease supply container (10) has a groove (11) in which a lower end of the grease feeding portion (22) is inserted at the bottom. 2. The grease feeder of claim 1 wherein the piston ring (14) is lowered by compressed air injected into the top of the piston ring. The grease feeder according to claim 1, wherein the piston ring (14) is lowered by a spring installed above the piston ring. In a grease feeder in which a grease supply pump is inserted into a grease supply container to supply grease to the grease supply pump, a grease supply pump 12 is inserted into the grease supply container 10 and in the lower cylinder 30 and in the lower cylinder. A grease pressurizing portion 22 composed of a lower piston rod 34 having a washer 40 installed therein, and a compression valve 42 coupled to the upper end of the lower piston rod to prevent backflow of grease and induce instantaneous compression. Grease compression unit 23 composed of a first compression pipe (31) and a second compression pipe (32) including a compression piston (44) coupled to an upper end of the first compression pipe (31) to impart an instantaneous pressure of grease, Grease discharge part 24 coupled to the upper end of the second compression pipe and having a grease discharge hole, flow paths 78a and 78b of the compressed air, coupled to the upper end of the grease discharge part and lifted by the operation wheel 62 on the main wall. ) And compressed air outlet hole (78c Lower piston rod connected to the compressed air switch 26 and the lower piston rod 34 having the compressed air compressed air switching valve 76 having a valve plate 80 for switching the aforementioned flow path. A grease feeder comprising a lift operation unit (27) including an upper piston (66) for raising and lowering the opening and closing of the compressed air switching valve (76). 6. The grease compression section (23) has a compression valve (42) having an outer diameter smaller than an inner diameter of the first compression pipe (31) inside the first compression pipe (31), and the compression valve has grease flowing at the top. Grease supply, characterized in that it has a groove (42a). 6. The grease compression section (23) has a compression piston (44) which is brought into close contact with the inner circumferential surface of the second compression pipe (32), and the compression piston (44) is connected to the shaft hole (44a) and the shaft hole. A grease feeder having transverse grease flow holes (45a), (45b) and having a ball valve (46) installed elastically supported by a spring (47) at an upper end thereof. In claim 5, the compressed air switching unit 26 is coupled to the operating wheel 62 and the compressed air flow hole (78a) is coupled to the small aperture formed in the lower end of the upper piston rod 63 of the lifting operation unit (27), Compressed air compressed air switching valve 76 having a 78b and compressed air discharge hole (78c), the working wheel 62 is installed on the inner surface of the compressed air compressed air switching valve 76, the upper piston Grease feeder characterized in that the flow path (78a), (78b) of the compressed air connected the compressed air distribution chamber (61) to the lower and upper portions of the upper piston (66), respectively, as the rod (63) moves up and down.