A cooling liquid device for machining

Abstract

The present invention provides a coolant device for machining, comprising a cooling cylinder, the cooling cylinder is externally connected to a fluid replenishment pipe and a delivery pipe, the cooling cylinder is internally provided with a liquid storage tank, the liquid storage tank is internally provided with a delivery pump, the delivery pump output port is connected to a U-shaped pipe, the U-shaped pipe is attached with a plurality of refrigeration plates, the delivery pipe comprises a fixed pipe, a folding hose and a cooling nozzle, the bottom of the cooling nozzle is fixedly connected to a support assembly, the cooling nozzle is fixed on the mounting seat and can rotate freely, and also comprises a recovery and filtering device for recovering and post-processing the collected coolant used for machining. The present invention filters the used coolant collected through the collection pipe by setting a recovery and filtering device, and at the same time precipitates impurities that cannot be filtered, thereby greatly reducing the content of impurities in the coolant and preventing impurities from clogging the cooling nozzle. The present invention also provides a method for using a coolant device for machining.

Description

Technical Field

[0001] The present invention relates to the technical field of cooling devices, and in particular to a cooling liquid device for machining and a method of using the same. Background Art

[0002] Mechanical automation technology is widely used in industry, agriculture, military, scientific research, transportation, commerce, medical treatment, services and family. The use of automation technology can not only liberate people from heavy physical labor, some mental labor and harsh and dangerous working environment, but also expand the function of human organs, greatly improve labor productivity and enhance human ability to understand and transform the world.

[0003] Automation equipment needs to be cooled during the processing to ensure processing accuracy and the quality of processed products. However, most of the existing cooling is done by water cooling, that is, by spraying water to cool the workpiece and processing tools. First, the sprayed water does not have a good recycling system, resulting in a waste of water resources. At the same time, the recycled water flow cannot be effectively cooled, resulting in pipe blockage and rising water temperature, which cannot guarantee the cooling effect. In addition, the existing cooling device cannot reduce the temperature of the water itself, so that the water temperature is often high, the cooling effect is greatly reduced, and it is inconvenient to use. Summary of the invention

[0004] The invention discloses a cooling liquid device for machining and a use method thereof, which solves the problems of poor cooling effect and blockage caused by poor material recovery.

[0005] The present invention adopts the following scheme:

[0006] A coolant device for machining, comprising a cooling cylinder, the cooling cylinder being externally connected to a fluid replenishment pipe and a delivery pipe, a fluid storage tank being arranged inside the cooling cylinder, a delivery pump being arranged inside the fluid storage tank, the fluid replenishment pipe and the delivery pipe being respectively connected to the fluid storage tank, the output port of the delivery pump being connected to a U-shaped pipe, the other end of the U-shaped pipe being connected to the delivery pipe, a plurality of refrigeration plates being attached to the U-shaped pipe, the delivery pipe comprising a fixed pipe, a folding hose and a cooling nozzle, the folding hose being connected to the cooling nozzle, a support assembly being fixedly connected to the bottom of the cooling nozzle, the support assembly comprising a mounting seat, a universal ball head movably matched with the mounting seat and a fixing seat for fixing the universal ball head, the cooling nozzle being fixed on the mounting seat and being able to rotate freely, and also comprising a recovery filter device for recovering and post-processing the coolant collected for machining, the recovery filter device being connected to the fluid storage tank.

[0007] As a further improvement, a protective tube is connected between the fixed tube and the folding hose, an inner liner is arranged in the protective tube, the inner liner is arranged on the first filter plate and the second filter plate, a connecting block is slidably installed on the top of the inner liner, the connecting block is connected to the first filter plate and the second filter plate, and a scraper is provided at the bottom of the second filter plate.

[0008] As a further improvement, the protective tube is connected to the fixed tube via a connecting piece, the connecting piece is conical in shape, and a sealing water retaining ring is provided between the connection between the inner liner and the connecting piece.

[0009] As a further improvement, the recovery and filtering device includes a filter box, a reflux pipe and a collection pipe externally connected to the filter box, the reflux pipe is connected to a liquid storage tank, the collection pipe is connected to the collection box below the machining position, the filter box is provided with an air cooling device, the air cooling device drives the cooling and filtering of the coolant in the filter box, and transports the filtered coolant to the liquid storage tank.

[0010] As a further improvement, the filter box is installed with a first baffle and a second baffle, and the first filter screen, the second filter screen and the third filter screen are separated by the first baffle and the second baffle. The first baffle is provided with a drainage groove on the top, and the second baffle is provided with a notch on the top, and an interception net is installed at the notch.

[0011] As a further improvement, the first filter screen, the second filter screen and the third filter screen are arranged along the direction from the collection pipe to the return pipe, and the mesh diameters of the first filter screen, the second filter screen and the third filter screen gradually decrease.

[0012] As a further improvement, the air cooling device includes a ventilation duct, a blower motor and fan blades. The ventilation duct is located above the filter box, one end of the blower motor is connected to the ventilation duct, and the other end is connected to the fan blades. The outer sleeve of the blower motor is provided with a protective cover, and the protective cover is provided with a protective net.

[0013] As a further improvement, a heat insulating sleeve is attached to the inner wall of the cooling cylinder.

[0014] The present invention also provides a method for using a machining coolant device, which is used for the above-mentioned machining coolant device, and comprises the following steps:

[0015] S1: First, connect the recovery filter device to the drain port of the machining equipment, fix the support assembly to the machining equipment, and adjust the position of the cooling nozzle so that the cooling nozzle is aligned with the machining parts and tools;

[0016] S2: Connect the external power supply of the liquid pump, the cooling plate and the cold air device. When cooling the processing work, the liquid pump transmits the coolant in the liquid storage tank through the U-shaped pipe to the cooling nozzle of the delivery pipe for spraying. During the processing, the angle of the cooling nozzle can be adjusted by folding the hose so that it is always aimed at the processed parts and tools for cooling;

[0017] S3: The used coolant enters the recovery and filtration device through the drain port, and is filtered through the first filter, the second filter and the third filter in turn. At the same time, the cold air device cools and filters the recovered coolant, and enters the liquid storage tank through the reflux pipe. The liquid pump then transports the filtered and recovered coolant out from the U-shaped pipe.

[0018] As a further improvement, a sensing device for sensing the amount of coolant is provided in the cooling cylinder. When the sensing device senses that the amount of coolant is less than a preset amount, coolant is automatically delivered through a liquid replenishing pipe for liquid replenishment.

[0019] By adopting the above technical solution, the present invention can achieve the following technical effects:

[0020] 1. The present invention sets a recovery and filtering device to filter the used coolant collected through the collection pipe through the first baffle, the second baffle, the drainage trough, the interception net, the first filter screen, the second filter screen, and the third filter screen, and at the same time precipitates impurities that cannot be filtered, thereby greatly reducing the content of impurities in the coolant and preventing impurities from clogging the cooling nozzle.

[0021] 2. The present invention uses an air cooling device to quickly cool the used coolant, thereby preventing excessive heat from causing the temperature of the coolant in the storage tank to rise, affecting the cooling effect, and also increasing the consumption of electrical energy.

[0022] 3. The present invention arranges refrigeration plates and U-shaped pipes. The U-shaped pipe increases the output length of the coolant in the pipe, and multiple refrigeration plates can be added. The refrigeration plates are energized to generate cold air, which reduces the temperature of the surface of the U-shaped pipe, greatly reducing the temperature of the coolant flowing through the U-shaped pipe, thereby improving the cooling effect.

[0023] 4. The mounting seat of the support assembly of the present invention and the universal ball head movably matched with the mounting seat, as well as the foldable hose, can freely rotate the spray angle of the cooling nozzle, which can achieve a better cooling effect in mechanical processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 is a schematic structural diagram of an embodiment of the present invention;

[0026] Figure 2 It is a schematic diagram of the symmetrical cross-sectional structure of the cooling cylinder of an embodiment of the present invention;

[0027] Figure 3 is a schematic diagram of a symmetrical cross-sectional structure of a protective tube according to an embodiment of the present invention;

[0028] Figure 4 is a schematic structural diagram of a support assembly according to an embodiment of the present invention;

[0029] Figure 5 is a schematic structural diagram of a recovery and filtration device according to an embodiment of the present invention with the top portion hidden;

[0030] Figure 6 is a schematic structural diagram of an air cooling device according to an embodiment of the present invention;

[0031] Icons: 1-cooling cylinder; 2-recovery filter device; 4-liquid replenishment pipeline; 5-transport pipeline; 6-support assembly; 7-protective cylinder; 8-air cooling device; 9-insulation sleeve; 11-liquid storage tank; 12-U-shaped pipeline; 13-refrigeration plate; 21-collection pipeline; 22-filter box; 23-return pipeline; 51-fixed pipe; 52-folded hose; 53-cooling nozzle; 61-mounting seat; 62-universal ball head; 63-fixed seat; 71- liner; 72- first filter plate; 73- second filter plate; 74- connection block; 75- scraper; 76- connection piece; 81- ventilation pipe; 82- blower motor; 83- fan blade; 221- first baffle plate; 222- second baffle plate; 223- first filter screen; 224- second filter screen; 225- third filter screen; 226- drainage groove; 227- notch; 228- interception net; 821- protective cover; 822- protective net. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the invention claimed for protection, but merely represents the selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0033] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0034] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0035] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0037] Example

[0038] Combination Figures 1 to 6 This embodiment provides a cooling liquid device for machining, including a cooling cylinder 1 and a recovery and filtering device 2. A liquid storage tank 11 is provided inside the cooling cylinder 1. A liquid replenishment pipe 4 and a delivery pipe 5 are connected to the cooling cylinder 1 and are both connected to the liquid storage tank 11. A delivery pump is provided inside the liquid storage tank 11. The liquid replenishment pipe 4 adds cooling liquid to the liquid storage tank 11. The output end of the delivery pump is connected to the delivery pipe 5. The cooling liquid in the liquid storage tank 11 is output from the delivery pipe 5 through the delivery pump. A cooling nozzle 53 is provided at the end of the delivery pipe 5, which can spray the machining position. The recovery and filtering device 2 is respectively connected to the liquid storage tank 11 of the cooling cylinder 1 and the drain port of the collection box under the machining equipment. The used cooling liquid is air-cooled and filtered by the recovery and filtering device 2 before being recycled to the liquid storage tank 11.

[0039] Reference Figure 1 and Figure 2 A U-shaped pipe 12 is also connected between the output end of the delivery pump and the delivery pipe 5, and a plurality of cooling fins 13 are attached to the U-shaped pipe 12. In this embodiment, the U-shaped pipe 12 is formed by connecting a plurality of U-shaped pipes, which can increase the output length of the coolant in the pipe, and a plurality of cooling fins 13 can be added. The cooling fins 13 are powered to generate cold air, which reduces the temperature of the surface of the U-shaped pipe, so that the temperature of the coolant flowing through the inside of the U-shaped pipe is greatly reduced, thereby improving the cooling effect. It can be understood that the longer the pipe is, the longer the time it takes to pass through the pipe, and the coolant in the pipe can pass through multiple cooling fins 13, thereby greatly reducing the temperature of the coolant and increasing the cooling effect of use.

[0040] Reference Figure 1 and Figure 4The delivery pipeline 5 includes a fixed pipe 51, a foldable hose 52 and a cooling nozzle 53, wherein the foldable hose 52 is connected to the fixed pipe 51 and the cooling nozzle 53 respectively, and the foldable hose 52 can be retracted and bent, so that the cooling nozzle 53 can be rotated and extended in any direction to facilitate alignment with the processing position. In this embodiment, the bottom of the cooling nozzle 53 is fixedly connected with a support assembly 6, so that the cooling nozzle 53 can be fixed when it is aligned with the processing position. Since the position of the tool is movable during the processing, if the nozzle is only aligned with one position during processing, it may not be able to completely cover the position of the tool during processing, which will cause the coolant to be unable to cool the tool, causing the local temperature to overheat and affect the processing quality. Therefore, the support assembly 6 is configured to enable the cooling nozzle 53 to rotate when an external force acts on the cooling nozzle 53, and to maintain the stability of the cooling nozzle 53 when no external force is applied. Specifically, the support assembly 6 includes a mounting seat 61, a universal ball head 62 that movably cooperates with the mounting seat 61, and a fixed seat 63 that fixes the universal ball head 62. The mounting seat 61 is connected to the cooling nozzle 53 by means of snap connection or magnetic attraction. The mounting seat 61 has a spherical groove that cooperates with the universal ball head 62. The fixed seat 63 is fixed on a plane or a bracket, so that the cooling nozzle 53 can be fixed at the mechanical processing equipment. It can be understood that one of the mounting seat 61 and the universal ball head 62 can be elastically retracted to facilitate the connection between the spherical groove and the universal ball head 62, and there is damping between the spherical groove and the universal ball head 62, so that after the cooling nozzle 53 is rotated to a predetermined angle, the mounting seat 61 and the universal ball head 62 will not rotate, thereby ensuring the stability of the cooling nozzle 53 and facilitating the adjustment of the orientation of the cooling nozzle 53 to achieve a better cooling effect. Furthermore, a telescopic rod connected to the universal ball head 62 may be provided on the fixing seat 63, so that the height of the cooling nozzle 53 can be adjusted according to different machining positions, thereby making the use range of the cooling device wider.

[0041] Reference Figure 1 and Figure 3A protective tube 7 is connected between the fixed tube 51 and the folding hose 52, which is convenient for filtering the coolant initially added from the liquid replenishing pipe 4, reducing the content of impurities in the coolant, and preventing the cooling nozzle 53 from being blocked. The protective tube 7 is provided with an inner liner 71, which can keep the coolant passing through warm and prevent the influence of external stability on the coolant. The inner liner 71 is arranged on the first filter plate 72 and the second filter plate 73, and a connecting block 74 is slidably installed on the top of the inner liner 71. The connecting block 74 is connected to the first filter plate 72 and the second filter plate 73, and a scraper 75 is provided at the bottom of the second filter plate 73. The first filter plate 72 and the second filter plate 73 can be easily disassembled and assembled through the connecting block 74, so that the first filter plate 72 and the second filter plate 73 can be cleaned after a certain period of use to prevent the accumulation of impurities and affect the flow of the coolant, and the scraper 75 can clean the sediment deposited at the bottom of the protective tube 7 during the disassembly process. Preferably, in order to facilitate the disassembly and assembly of the protective tube 7, the protective tube 7 is threadedly connected to the fixed tube 51 through a connector 76, the connector 76 is conical in shape, and a sealing water retaining ring is provided between the connection between the inner liner 71 and the connector 76 to prevent leakage of the coolant.

[0042] Reference Figure 1 , Figure 5 and Figure 6The recovery filter device 2 includes a filter box 22, a return pipe 23 externally connected to the filter box 22, and a collection pipe 21. The return pipe 23 is connected to the liquid storage tank 11. The collection pipe 21 is connected to the collection box below the machining position. The used coolant in the collection box is filtered by the recovery filter device 2 and then enters the liquid storage tank 11 for recycling. The recovery filter device 2 filters the recovered coolant and simultaneously precipitates solid waste that cannot be filtered, thereby greatly reducing the content of impurities in the coolant and preventing impurities from clogging the cooling nozzle 53. The filter box 22 is installed with a first baffle 221 and a second baffle 222, and a first filter screen 223, a second filter screen 224 and a third filter screen 225 separated by the first baffle 221 and the second baffle 222. A drainage groove 226 is provided on the top of the first baffle 221, and a notch 227 is provided on the top of the second baffle 222. An interception net 228 is installed at the notch 227. It can be understood that the first baffle 221 and the second baffle 222 divide the filter box 22 into three areas, namely the first area, the second area and the third area. The first filter screen 223, the second filter screen 224 and the third filter screen 225 are respectively installed below the first area, the second area and the third area. The coolant enters the first area from the collection pipe 21. When the amount of coolant is large enough, it will fully rise from the first filter screen to the drainage groove 226, and then enter the second area from the drainage groove 226. The coolant also rises from the bottom through the second filter screen to the gap 227, and flows to the third area after being filtered by the interception net 228 at the gap 227, and then flows to the reflux pipe 23 after being filtered by the third filter screen to enter the liquid storage tank 11. It should be noted that the mesh diameters of the first filter 223, the second filter 224 and the third filter 225 gradually decrease, so that impurities can be filtered layer by layer from large to small. If the mesh diameter is too small, all impurities will be filtered in the first zone, which may easily cause the filter to be blocked and affect recycling.

[0043] The top of the filter box 22 is also provided with an air cooling device 8, which can drive the cooling liquid in the filter box 22 to cool and filter, so as to avoid the recycled cooling liquid from entering the liquid storage tank 11 when the heat is too high, so that the temperature of the cooling liquid in the liquid storage tank 11 rises, affecting the cooling effect, and also increasing the consumption of electric energy. The air cooling device 8 includes a ventilation pipe 81, a blower motor 82 and a fan blade 83, the ventilation pipe 81 is located above the filter box 22, one end of the blower motor 82 is connected to the ventilation pipe 81, and the other end is connected to the fan blade 83, and the rate of air flowing through the object per unit time is accelerated by the blower motor 82 and the fan blade 83, so as to strengthen the ventilation and achieve the enhanced cooling effect. The outer sleeve of the blower motor 82 is provided with a protective cover 821, and a protective net 822 is provided on the protective cover 821, and the protective cover 821 plays the role of protecting the blower motor 82, and the protective net 822 can dissipate heat for the blower motor 82, prevent the internal temperature from overheating, affect the service life of the motor, and increase the temperature of the cooling liquid in the filter box 22, affecting the cooling effect.

[0044] In this embodiment, a heat insulating sleeve 9 may be attached to the inner wall of the cooling cylinder 1 to play an insulating role and prevent the external temperature from affecting the cooling effect of the liquid storage tank 11.

[0045] The present invention also provides a method for using a machining coolant device, which is used for the above-mentioned machining coolant device, and comprises the following steps:

[0046] S1: First, connect the recovery filter device 2 to the drain outlet of the machining equipment, fix the support assembly 6 to the machining equipment, and adjust the position of the cooling nozzle 53 so that the cooling nozzle 53 is aligned with the machining parts and the tool;

[0047] S2: The external power supply of the liquid pump, the cooling plate 13 and the cooling air device is turned on. When cooling the processing work, the liquid pump transmits the coolant in the liquid storage tank 11 through the U-shaped pipe 12 to the cooling nozzle 53 of the delivery pipe 5 for spraying. During the processing, the angle of the cooling nozzle 53 can be adjusted by folding the hose 52 so that it is always aimed at the processed parts and the tool for cooling;

[0048] S3: The used coolant enters the recovery filter device 2 through the drain port, and is filtered in turn by the first filter 223, the second filter 224 and the third filter 225. At the same time, the cold air device cools and filters the recovered coolant, and enters the liquid storage tank 11 through the reflux pipe 23. The liquid pump then transports the filtered and recovered coolant out from the U-shaped pipe 12.

[0049] In this embodiment, a sensing device for sensing the amount of coolant is provided in the cooling cylinder 1. When the sensing device senses that the amount of coolant is less than a preset amount, the coolant is automatically delivered through the refilling pipe 4 for refilling. It is understandable that the used coolant will certainly evaporate and reduce due to high-temperature cooling during recycling, so the coolant in the liquid storage tank 11 will become less and less during recycling. Therefore, the coolant needs to be replenished to continue machining without worrying about the lack of coolant.

[0050] The above are only preferred implementations of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention.

Claims

1. A cooling liquid device for machining, characterized in that: The cooling cylinder comprises a cooling cylinder, the cooling cylinder is externally connected with a fluid replenishment pipeline and a delivery pipeline, a liquid storage tank is arranged inside the cooling cylinder, a delivery pump is arranged inside the liquid storage tank, the fluid replenishment pipeline and the delivery pipeline are respectively connected to the liquid storage tank, the output port of the delivery pump is connected with a U-shaped pipeline, the other end of the U-shaped pipeline is connected with the delivery pipeline, a plurality of refrigeration plates are attached to the U-shaped pipeline, the delivery pipeline comprises a fixed pipe, a folding hose and a cooling nozzle, the folding hose is connected with the cooling nozzle, a support assembly is fixedly connected to the bottom of the cooling nozzle, the support assembly comprises a mounting seat, a universal ball head movably matched with the mounting seat and a fixing seat for fixing the universal ball head, the cooling nozzle is fixed on the mounting seat and can rotate freely, and also comprises a recovery filter device for recovering the collected coolant after processing, the recovery filter device is connected to the liquid storage tank The filter box is connected; the recovery filter device includes a filter box, a return pipe and a collection pipe externally connected to the filter box, the return pipe is connected to the liquid storage tank, the collection pipe is connected to the collection box below the machining position, the filter box is provided with an air cooling device, the air cooling device drives the cooling and filtering of the coolant in the filter box, and the filtered coolant is transported to the liquid storage tank; the filter box is installed with a first baffle and a second baffle, and a first filter screen, a second filter screen and a third filter screen are separated by the first baffle and the second baffle, the top of the first baffle is provided with a drainage groove, the top of the second baffle is provided with a notch, and an interception net is installed at the notch; the first filter screen, the second filter screen and the third filter screen are arranged along the direction from the collection pipe to the return pipe, and the mesh diameter of the first filter screen, the mesh diameter of the second filter screen and the mesh diameter of the third filter screen gradually decrease.

2. A cooling liquid device for machining according to claim 1, characterized in that: A protective tube is connected between the fixed tube and the folding hose, an inner liner is arranged in the protective tube, the inner liner is arranged on the first filter plate and the second filter plate, a connecting block is slidably installed on the top of the inner liner, the connecting block is connected to the first filter plate and the second filter plate, and a scraper is arranged at the bottom of the second filter plate.

3. A cooling liquid device for machining according to claim 2, characterized in that: The protective tube is connected to the fixed tube via a connecting piece, the connecting piece is in a conical shape, and a sealing water retaining ring is provided between the connection between the inner liner and the connecting piece.

4. The coolant device for machining according to claim 1, characterized in that: The air cooling device includes a ventilation pipe, a blower motor and fan blades. The ventilation pipe is located above the filter box. One end of the blower motor is connected to the ventilation pipe, and the other end is connected to the fan blades. The outer sleeve of the blower motor is provided with a protective cover, and the protective cover is provided with a protective net.

5. The cooling liquid device for machining according to claim 1, characterized in that: A heat insulating sleeve is attached to the inner wall of the cooling cylinder.

6. The cooling liquid device for machining according to claim 1, characterized in that: A sensing device for sensing the amount of coolant is provided in the cooling cylinder. When the sensing device senses that the amount of coolant is less than a preset amount, coolant is automatically delivered through the refilling pipeline for refilling.

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