JP3068629U - Coolant cleaning equipment - Google Patents

Abstract

(57) [Summary] (Modifications required) [Problem] A new method capable of minimizing sludge accumulated at the bottom of a coolant tank and simultaneously lowering the temperature of coolant that has risen due to cooling of a workpiece or the like by a machining base machine. To provide a coolant liquid purifying device employing a simple system. An outer peripheral surface of a circular coolant tank is surrounded by a cylindrical thin iron plate with a gap between the outer peripheral surface and a cylindrical thin iron plate.
Is divided into a plurality of fins 33 made of a thin iron plate connected from the upper end to the lower end of the circular coolant tank 14 for passing air on the floor surface at a temperature lower than room temperature. And air ducts.

Description

[Detailed description of the invention]

[0001]

[Industrial applications]

 The present invention relates to a coolant cleaning apparatus that separates sludge from a coolant containing sludge discharged from an industrial machine or the like (hereinafter, referred to as a processing mother machine) to clean the coolant.

[0002]

[Prior art]

 In the industry, in order to improve recyclability, not to collect sludge at the bottom of the coolant tank, and at the same time, to reduce the temperature of the coolant that has risen due to the cooling of the workpiece in the machining base, There is a need for a cleaning device. FIGS. 3 and 4 show a magnetic separator 11, a coolant immersion coolant pump 12 for circulating coolant, and a coolant pump 13 for pressure-feeding the purified coolant to a processing mother machine disclosed in Japanese Utility Model Registration No. 3060849. The upper surface of the pump suction port 29 of the submersible coolant pump 12 which is constituted by the circular coolant tank 14 having two coolant pumps and is attached to the circular coolant tank 14 is flush with the bottom surface of the circular coolant tank 14, or The immersion type coolant pump 12 is provided at the center of the circular coolant tank 14, and the coolant in the circular coolant tank 14 has the same rotation direction as the rotation direction of the impeller 30 of the coolant pump 13. A swirl 27 is provided, and the cleaned coolant is supplied to a circular coolant tank. FIG. 4 is a schematic explanatory view of a coolant purifying apparatus for flowing a coolant into a pump chamber 22 provided with a coolant pump 13 for pressure-feeding an outer peripheral side surface of a workpiece 14 to a processing mother machine. When it is necessary to lower the temperature of the coolant that has risen, a coolant purifier that has been provided by attaching a cooler 36 to the coolant purifier is conventionally provided.

[0003]

[Problem to be Solved by the Invention] Claim 1 according to the present invention minimizes the sludge accumulated at the bottom of the coolant tank, and simultaneously reduces the temperature of the coolant that has risen due to the cooling of the work in the machining base machine. It is an object of the present invention to provide a coolant purifying apparatus employing a novel system which can be lowered.

[0004]

[Means for Solving the Problems]

 As a result of various studies on a method that can always lower the temperature of the coolant that has risen due to the cooling of the work in the machining base machine, the temperature of the air on the floor surface was not affected by the room temperature of 38 ° C. , 30 ° C. Based on the result of the temperature measurement, the method of using the air on the floor surface to cool the coolant in the circular coolant tank was examined again. As a result, the outer circumferential surface of the circular coolant tank according to claim 1 was Surrounded by a thin cylindrical material with a gap between the outer peripheral surface and the gap, a fin made of a thin material connected from the upper end to the lower end of the circular coolant tank between the outer peripheral surface of the circular coolant tank and the cylindrical thin material, A coolant purifying apparatus characterized by being divided into a plurality of parts has been devised.

[0005]

[Embodiment of the invention]

 The coolant purifying apparatus according to the present embodiment is capable of reducing the amount of sludge accumulated at the bottom of the coolant tank as much as possible, and at the same time, constantly reducing the temperature of the coolant that has risen due to the cooling of a workpiece or the like in the machining base machine. Cleaning device. In order to maintain and improve the accuracy of the workpiece by the processing mother machine, it is inevitable to lower the temperature of the raised coolant by cooling the workpiece in the processing mother machine. Hereinafter, typical embodiments of the present invention will be described with reference to the drawings. However, the dimensions, shapes, materials, relative positions, and the like of the components described in this example are not intended to limit the scope of the present invention only to them unless otherwise specified. , Are merely illustrative examples. A coolant cleaning device according to the present embodiment will be described with reference to FIGS. This cleaning device separates and processes a magnetic separator 11, a circular coolant tank 14 connected to the magnetic separator 11, a immersion type coolant pump 12 for coolant circulation provided on the circular coolant tank 14, and sludge in the coolant. The pump chamber 22 is provided with a coolant pump 13 for pumping the coolant to the working machine. The coolant containing the magnetic sludge discharged from the processing mother machine is first flowed into the magnetic separator 11, where the sludge in the coolant is separated. The magnetic separator 11 includes a non-magnetic rotating cylinder, a rotating cylinder 15 having a fixed magnet incorporated therein, and a motor 16. The rotating cylinder 15 is rotated by a motor 16, and a flow path is formed between the rotating cylinder 15 and the semi-cylindrical bottom plate 17 with a predetermined gap. The sludge in the coolant is separated by passing the coolant containing the sludge of the magnetic material through the inside of the coolant 18 and adsorbing and separating the sludge of the magnetic material in the coolant on the outer periphery of the rotating cylinder 15. The coolant after the separation process of the sludge in the coolant that has flowed out flows into the circular coolant tank 14 in a tangential direction. The magnetic sludge adsorbed on the outer periphery of the rotary cylinder 15 is pressed by the squeezing roller 19 to be dehydrated, scraped off by the scraping plate 20, and discharged into the receiving box 21.

A submerged coolant pump 12 for circulating coolant is provided at a central portion of the circular coolant tank 14, and a coolant obtained by separating sludge in the coolant is provided at a processing base machine at an outer peripheral side surface of the circular coolant tank 14. A pump chamber 22 provided with each of the coolant pumps 13 for pressure feeding is provided. A T-shaped connecting pipe 24 is provided in the middle of a discharge pipe 23 of a coolant pump 13 provided in a pump chamber 22 for pressure-feeding a coolant from which sludge in a coolant has been separated and processed to a processing mother machine. The coolant is jetted into the circular coolant tank 14 through a coolant discharge nozzle 25 installed in a tangential direction in the circular coolant tank 14. The above-mentioned coolant jetted in the tangential direction in the circular coolant tank 14 and the above-mentioned coolant discharged from the magnetic separator 11 and flowed in the tangential direction of the circular coolant tank 14 cause a vortex in the circular coolant tank 14. The fine sludge and the like in the coolant that could not be collected by the magnetic separator 11 due to the occurrence of 27 continuously settled while rotating with the coolant and accumulated on the bottom surface of the central portion of the circular coolant tank 14. . The strength of the vortex 27 can be adjusted by adjusting the flow rate of the coolant ejected from the coolant discharge nozzle 25 with the flow rate adjustment valve 26. The center bottom of the circular coolant tank 14 is positioned such that the upper surface of the pump suction port 29 of the casing 28 of the immersion coolant pump 12 for circulating the coolant is flush with or lower than the bottom surface of the circular coolant tank 14. The casing 28 can be embedded in the bottom of the circular coolant tank 14. For this reason, fine sludge and the like in the coolant that could not be collected by the magnetic separator 11 integrated on the bottom of the center of the circular coolant tank 14 due to the vortex 27 described above are removed by the immersion coolant pump 12 for coolant circulation. Most of the liquid is sucked and sent again under pressure into the magnetic separator 11 to separate sludge in the coolant again. The immersion coolant pump 12 for circulating the coolant continuously circulates the coolant during the operation of the cleaning device, and significantly reduces the accumulation of sludge and the like on the bottom of the circular coolant tank 14. The suction force of the immersion coolant pump 12 can be increased by making the direction of the vortex 27 in the circular coolant tank 14 the same as the rotation direction of the impeller 30 of the immersion coolant pump 12 for circulating the coolant. Thus, the above effect can be significantly increased. Further, the bottom plate of the circular coolant tank 14 may have a slope other than a flat surface.

[0007] The circular coolant tank 14 is provided with a coolant pump 13 in which a part of the outer peripheral side surface is provided and a coolant pump 13 for pumping the coolant on the outer peripheral surface having the highest cleanliness of the coolant in the circular coolant tank 14 to the processing mother machine. The circular coolant tank 14 and the pump chamber 22 communicate with each other through a notch 31 having an underflow structure. In the middle of the discharge pipe 23 of the coolant pump 13, a T-shaped connection pipe 24 is provided as described above, and a part of the coolant is supplied through a coolant discharge nozzle 25 provided in a tangential direction in the circular coolant tank 14. Spouts out into the circular coolant tank 14. In the middle of the pipe from the coolant pump 13 to the processing mother machine, a flow rate adjusting valve 26 for adjusting the coolant supply amount after the separation processing of the sludge in the coolant to the processing mother machine is provided. In addition, the coolant after sludge separation processing in the coolant is supplied to the processing mother machine. In the present embodiment, the case where the sludge discharged from the processing mother machine is a magnetic substance has been described. However, by replacing the magnetic separator in the present embodiment with a filter device or the like, the sludge discharged from the processing mother machine is a non-magnetic substance. Can also be handled.

The circular coolant tank 14 maintains a space between the circular coolant tank 14 and the floor surface. The outer periphery of the circular coolant tank 14 is surrounded by a cylindrical thin iron plate 34 separated from the outer peripheral surface by a gap 32. The gap 32 between the outer peripheral surface and the cylindrical thin iron plate 34 becomes an air duct 35 divided into a plurality of parts by a fin 33 made of a thin iron plate connected from the upper end to the lower end of the circular coolant tank 14. The coolant in the circular coolant tank 14 is constantly cooled by flowing air from the floor surface at a temperature lower than room temperature through the air duct 35. Note that the attachment of the fins 33 made of a thin iron plate is not limited to being perpendicular to the upper surface shown in the circular coolant tank 14 of this embodiment. Further, the cooling effect of the coolant in the circular coolant tank 14 is increased by forcibly blowing the air into the plurality of divided air ducts 35 with the fins 33 by the cooling fan or the like. . (Not shown) In addition, as described above, the device of the present invention is not limited to the embodiment described above and shown in the drawings, but can be appropriately changed without departing from the gist.

[0008]

[Effect of the invention]

 According to the coolant purifying apparatus having an air duct which also serves as a radiation fin on the outer peripheral surface of the circular coolant tank according to the first aspect, the temperature of the coolant in the circular coolant tank is reduced by 5 to 6 ° C as compared with the conventional case. And the cooling effect was confirmed. As a result, not only can the accuracy of the workpiece by the processing machine be maintained and improved, but it can also contribute to energy saving by not using a cooling machine, thereby reducing costs and reducing the floor space required for installation. In addition to this, it is expected to have the effects of preventing the decay of the coolant liquid and reducing the running cost, etc., and can maintain the performance of industrial machinery that is used repeatedly, thereby contributing to the overall reduction in operating costs.

[Brief description of the drawings]

FIG. 1 is an explanatory view showing the front of a coolant cleaning apparatus according to the present invention.

FIG. 2 is an explanatory view showing a plane of the coolant cleaning device of the present invention.

FIG. 3 is an explanatory view showing the front of a conventional coolant cleaning device.

FIG. 4 is an explanatory view showing a plane of a conventional coolant cleaning device.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 11 ... Magnetic separator 12 ... Immersion type coolant pump 13 ... Coolant pump 14 ... Circular coolant tank 15 ... Rotating cylinder 16 ... Electric motor 17 ... Bottom plate 18 ... Flow path 19 ... squeezing roller 20 ... scraping plate 21 ... receiving box 22 ... pump chamber 23 ... discharge pipe 24 ... T-shaped connection pipe 25 ... coolant discharge nozzle 26 ... flow rate Adjusting valve 27 ... swirl 28 ... casing 29 ... pump suction port 30 ... impeller 31 ... cutout hole 32 ... gap 33 ... fin 34 ... cylindrical Thin iron plate 35 ・ ・ ・ Air duct 36 ・ ・ ・ Cooler

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Osamu Kawakubo Toyota Motor Co., Ltd. 1 Toyota Town, Toyota City, Kariya City, Aichi Prefecture (72) Hideyuki Nagata 1 Toyota Vehicle Town, Toyota City, Kariya City, Aichi Prefecture Toyota Auto Corporation

Claims (1)

[Utility model registration claims] An immersion type coolant pump attached to a coolant tank of a coolant purifying apparatus for purifying the coolant by separating the sludge from a coolant containing sludge discharged from an industrial machine or the like. The upper surface of the suction port is mounted on the same plane as the bottom surface of the coolant tank or less than the bottom surface thereof, the coolant tank is circular, and the immersion coolant pump is provided at the center of the coolant tank, A coolant pump for giving a vortex in the same rotation direction as the rotation direction of the impeller of the coolant pump to the coolant in the inside, and for pumping the purified coolant from the outer peripheral outer side surface of the coolant tank to an industrial machine or the like. Purification of coolant flowing into the pump room In the arrangement, the outer peripheral surface of the circular coolant tank is surrounded by a thin cylindrical material separated from the outer peripheral surface by a gap, and a plurality of fins made of a thin material connected from the upper end to the lower end of the circular coolant tank form a circular coolant. A coolant purifying apparatus, wherein a space between an outer peripheral surface of a tank and a cylindrical thin material is divided into a plurality of spaces.