JP3069850U - Oil skimmer - Google Patents

Abstract

(57) [Summary] [Technical Problem] A technology capable of smoothly discharging scum adhered to a belt and scraped off by a scraper without stagnation, and in particular, can be performed smoothly for a long period of time and can be used economically without labor. I will provide a. SOLUTION: An idle pulley 5 is pressed from a belt outer surface 4a side to a belt inner surface 4b side in a state where an endless belt 4 is stretched between pulleys 2 and 3 having an upper and lower positional relationship, and an upper pulley 2 and an idle pulley 2 are idled. A configuration in which a belt retraction portion 10 is formed between the pulley 5 and the scraper 6 and the scum collection tray 17 is disposed below the scraper 6 while the scraper 6 is pressed against the belt retraction portion 10 from below.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 In the present invention, after the scum attached to the belt is scraped off with a scraper, the scum is smoothly discharged without staying near the scraper, etc., so that the scum removed does not hinder subsequent scum removal. More particularly, the present invention relates to an oil skimmer device that can be used smoothly and economically for a long period of time without any trouble.

[0002]

[Prior art]

 Coolant used in machine tools, etc., is used for cutting and grinding, and then temporarily collected in an oil-water separation tank for reuse. Since the used coolant is in a state where scum containing chili oil and other impurities together with oils and fats floats, an oil skimmer device is mounted on the oil-water separation tank in order to remove the scum.

[0003] Among the conventional oil skimmer devices, in a belt-type oil skimmer device, an endless belt is wound around a pair of pulleys having a substantially vertical positional relationship, and the lower pulley side is immersed in a waste liquid in an oil-water separation tank. In addition, the belt is rotated at an appropriate speed on the upper pulley side disposed above the oil / water separation tank, the scum attached to the belt surface is lifted from the oil / water separation tank, and then is scraped off with a scraper, thereby forming the oil / water separation tank. Floating scum is removed. Since the belt is arranged vertically, the scraper has a structure in which the scraper is pressed against the belt from the lateral direction, and a structure in which the scraper is discharged from the lateral direction through an inclined gutter.

[0004]

[Problems to be solved by the invention]

 However, the conventional oil skimmer described above has the following problems. 1. Originally, the belt was arranged vertically as described above where the scum that had been scraped off by the scraper had to be discharged one after another so as not to be in the way, so the scraper was inevitably attached to the belt. In contrast, the scum, which contains oils and fats, stays around its contact points because the scum containing oils and fats stays at the point of contact, and the scum collected by the scum falls into the storage tank and adheres to the belt again. There was a problem that the collection efficiency was deteriorated by returning to the oil-water separation tank. 2. The scum scraped off by the scraper is connected to the scraper and discharged in the lateral direction of the belt by a downwardly inclined gutter, but the scum stays in the middle of the gutter and loses its place to go. Such scum that has fallen from the vicinity of the scraper soils the surrounding area, and scum that has accumulated near the scraper deteriorates the efficiency of collection from the storage tank as described above. Therefore, there is a problem that extra work is required. 3. If a scum collection tray is installed below the scraper instead of a gutter, the distance from the scraper to the belt is small (the pocket is narrow), and the area in that direction cannot be increased.

[0005] The present invention has been made to solve the above-mentioned conventional problems, and an object of the present invention is to smoothly prevent the scum adhered to a belt and scraped off by a scraper without being retained. It is an object of the present invention to provide an oil skimmer device which can discharge the oil, and in particular, can perform the operation smoothly for a long period of time and can be used economically without any trouble.

[0006]

[Means for Solving the Problems]

 In order to solve the above-mentioned problem, in the oil skimmer device according to claim 1 of the present invention, an endless belt is wound around a pair of pulleys having a substantially vertical positional relationship, and the lower pulley side is placed in an oil / water separation tank. The belt is rotated at an appropriate speed on the upper pulley disposed above the oil / water separation tank, and the scum attached to the belt surface is taken out of the oil / water separation tank and then scraped off with a scraper. In an oil skimmer device configured to remove floating scum from an oil-water separation tank, an idle pulley is pressed from the outer surface side of the belt to the inner surface side of the belt while an endless belt is stretched between the upper and lower pulleys. To form a retracted portion of the belt between the upper pulley and the idle pulley, and press the scraper against the retracted portion of the belt from below. As well as arranged to, characterized in that a scum collecting tray over to the scraper downward.

In the oil skimmer according to the second aspect, in the oil skimmer according to the first aspect, the axis passing through the upper pulley and the lower pulley is appropriately inclined toward the idle pulley, so that the oil water is supplied. It is characterized by being arranged in a separation tank.

[0008]

[Action]

 In the oil skimmer device of the present invention, the idle pulley is pressed against the inner surface of the belt from the outer surface of the belt stretched between the upper and lower pulleys, so that the belt is positioned between the upper pulley and the idle pulley. By forming the drawn-in portion, the belt surface side of the drawn-in portion becomes substantially downward, and the scraper is pressed against the downwardly-facing portion from below. For this reason, the distance from the scraper position to the belt position in the lateral direction becomes deeper, and the scum collection tray installed thereunder has a sufficient space between the scraper and the belt side. Therefore, the scum adhering to the surface of the belt in the oil / water separation tank and dropping one after another as soon as it is scraped off at the downward portion of the belt does not stay in the scraper. Therefore, the scum does not return to the oil-water separation tank side. In addition, scum can be received by the scum collection tray below, but the tray that is widened from the drop point to the belt side can increase the amount of accumulation and extend the collection interval.

In the oil skimmer device of the present invention, when the axis passing through the upper pulley and the lower pulley is disposed in the oil / water separation tank so as to be appropriately inclined toward the idle pulley, the belt side can be further deepened. Therefore, the amount of sedimentation can be increased and the interval between collection operations can be extended.

[0010]

[Embodiment of the invention]

 Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a cross-sectional view showing a use state of the oil skimmer device according to the embodiment.

First, the oil skimmer device A is of a belt type, and has a main structure including a machine frame main body 1, an upper pulley 2, a lower pulley 3, an endless belt 4, an idle pulley 5, and a scraper 6. . In the figure, 12 is an oil / water separation tank, 13 is its upper member, 14 is a waste liquid pipe connected to the machine tool side, 15 is a waste coolant liquid discharged from the waste liquid pipe, and 16 is a scum floating in the waste coolant liquid. It is.

The machine frame main body 1 is formed in a substantially inverted L-shape, and is fixed to an opening 7 provided in an upper member 13 of the oil / water separating tank in a slightly inclined state. Reference numeral 11 denotes an inspection window provided on the upper end side with a glass. Note that the machine frame body 1 may be arranged vertically, but in this case, useless space is generated, and the whole body may become somewhat large. The upper pulley 2 is rotatably supported at the position of the upper side laterally projecting frame portion 1a of the machine frame main body 1 and is driven at an appropriate speed by a motored reduction gear (not shown). The lower pulley 3 is rotatably supported by a distal end of a frame (not shown) extending from the machine frame main body 1 to the inside of the oil / water separation tank 12 through the opening 7. The lower pulley 3 is immersed in the waste coolant liquid 15 of the oil / water separation tank 12 in such a state that the axis passing through the shaft support 7 is inclined toward the upper end laterally projecting frame 1a. The belt 4 is stretched between the lower pulley 3 and the upper pulley 2. The belt 4 is disposed so as to be entirely inclined toward the upper side laterally protruding frame 1a as described with reference to the inclination of the axis. The belt 4 is selected to have a good adhesion of scum, a low resistance to various coolants and various fats and oils, and a durability against abrasion.

The idle pulley 5 is disposed near the upper pulley 2 and on the side of the upper-side laterally projecting frame 1 a and is rotatably supported by a shaft 9. The idle pulley 5 is hung between the upper and lower pulleys 2 and 3. The belt pull-in portion 10 is formed between the upper pulley 2 and the idle pulley 5 by pressing the belt 4 from the outer surface 4a side to the belt inner surface 4b side. The belt retracting portion 10 is provided in an inclined state in the present embodiment, but may be arranged horizontally. In this case, if the diameter of the upper pulley 2 is increased, it is easier to form the belt pull-in portion.

The scraper 6 is provided by forming an edge of a plate-like member into a knife edge 6a, and is disposed so as to penetrate substantially vertically through a lower opening of the upper end laterally projecting frame 1a. The knife edge 6a is detachably fixed to the machine body 1 such that the knife edge 6a comes into contact with the retracted portion 10 of the belt. In the figure, reference numeral 17 denotes a scum collection tray, at least a bottom of which is formed by a mesh so that water can be drained, and is disposed below the scraper 6. Below the scraper, the pocket 18 is formed deeply due to the inclination of the belt 4 and the belt retraction portion 10, and the scum collection tray 17 can be arranged so as to sufficiently cover the lower periphery of the scraper 6.

Next, the operation of the embodiment will be described. First, when the upper pulley 2 is rotated clockwise in the illustrated state, the scum 16 attached to the belt outer surface 4a is lifted by the left side of the belt, and is conveyed in the direction of the idle pulley 5 through the belt retracting portion 10. . At the belt retracting portion 10, the belt is removed by the scraper 6. Since the scraper 6 has a plate shape and is arranged substantially vertically, the scraped scum 16 easily falls and is collected in the lower scum collection tray 17. Since the pocket 18 on the scraper 6 side is deep, the scum collection tray 17 can be set sufficiently deep, and the scraped scum can be collected without being spilled for a long period of time. As a result, the inspection and collection period is extended, and it is economical without human labor. The state of adhesion of the scum, the state of the belt, and the like can be easily inspected through the inspection window even during operation.

Although the embodiment of the present invention has been described above, the specific configuration of the present invention is not limited to this embodiment. For example, the lower end of the machine frame main body 1 may be provided so that one side is hingedly connected to the upper member 13 or the like so that the lower pulley 3 side comes out of the opening 7 at the time of rotation. The shape and the mounting state of the scraper 6 can be set arbitrarily. In short, the scraper 6 only needs to have a structure or mounting posture in which the scum can easily fall. Micro-vibration may be applied mechanically or electromagnetically to the scraper 6 or the like.

[0017]

[Effect of the invention]

 As described above, in the oil skimmer device of the present invention, the scum attached to the belt surface in the oil-water separation tank and rising as soon as it is scraped off by the belt downward portion one after another. The scum does not stay in the scraper or return to the oil-water separation tank side, so that it can be efficiently collected over a long period of time. In addition, scum can be received by the scum collection tray below, but the tray that is widened from the drop point to the belt side can increase the amount of accumulation and extend the collection interval. The surroundings are not stained by the dropped scum. In addition, if the axis passing through the upper pulley and the lower pulley is disposed in the oil / water separation tank so as to be appropriately inclined toward the idle pulley, the belt side can be further deepened, so that the accumulation amount can be increased and the collection work can be performed. The effect that the interval can be extended can be obtained.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view illustrating a use state of an oil skimmer device according to an embodiment of the present invention.

[Explanation of symbols]

 A Oil skimmer device 2 Upper pulley 3 Lower pulley 4 Endless belt 4a Belt outer surface side 4b Belt inner surface side 5 Idle pulley 6 Scraper 10 Belt retraction part 12 Oil / water separation tank 15 Waste coolant liquid 16 Scum 17 Scum collection tray 18 On the scraper side bosom

Claims (2)

[Utility model registration claims] An endless belt is wound around a pair of pulleys having a substantially vertical positional relationship, the lower pulley is immersed in a waste liquid in an oil / water separation tank, and the upper pulley is disposed above the oil / water separation tank. In an oil skimmer device in which the belt is rotated at an appropriate speed to remove scum attached to the belt surface from the oil / water separation tank and then scraped off with a scraper to remove floating scum in the oil / water separation tank, With the endless belt stretched between the pulleys, the idle pulley is pressed from the outer surface side of the belt to the inner surface side of the belt to form a retracted portion of the belt between the upper pulley and the idle pulley. And a scum collection tray below the scraper. Oil skimmer device, characterized in that. 2. The oil skimmer according to claim 1, wherein an axis passing through the upper pulley and the lower pulley is disposed in the oil / water separation tank so as to be appropriately inclined toward the idle pulley. Skimmer device.