Cooling liquid filtering device for numerical control machine tool

Abstract

The utility model belongs to the technical field of cooling liquid filtering, and particularly relates to a cooling liquid filtering device for a numerical control machine tool, which comprises a filtering tank, a filtering mechanism, a filtering device and a filtering device, the cleaning mechanism is arranged on one side of the filtering mechanism and is suitable for cleaning the filtering mechanism in the process of filtering the cooling liquid by the filtering mechanism; the cleaning mechanism is arranged, the motor is started, bubbles are continuously generated by the cleaning mechanism in the process that the filtering mechanism filters mixed liquid of cooling liquid and chippings guided into the filtering tank, the bubbles are discharged upwards from the lower portion of the filtering mechanism, and then the chippings intercepted above the filtering mechanism are cleaned; the surface of the filtering mechanism is always kept smooth, and filtering is not affected.

Description

Technical Field

[0001] The utility model belongs to the technical field of coolant filtration, and particularly relates to a coolant filtration device for a numerical control machine tool. Background Art

[0002] A numerical control machine tool, abbreviated as a CNC machine tool, is an automated machine tool equipped with a program control system. Through arithmetic processing, various control signals are sent out by the numerical control device to control the actions of the machine tool, and the parts are automatically processed according to the shape and size required by the drawing.

[0003] During the use of a numerical control machine tool, coolant is required to continuously cool the workpiece being processed to prevent overheating between the cutting tool and the workpiece. After the coolant of the numerical control machine tool is sprayed out, it will be mixed with the workpiece debris. Before recycling, it is generally discharged mixed with the debris and filtered through a filtration device before being recycled. However, most of the existing filtration devices use filter screens for filtration. Under the condition of long-term operation of the numerical control machine tool, the filter screen will gradually become blocked, resulting in the influence of the filtration effect, and further affecting the circulation of the coolant. It is necessary to stop the machine to clean the filter screen or replace the filter screen, which affects the work efficiency.

[0004] Therefore, a coolant filtration device for a numerical control machine tool is provided to solve the technical problem of stopping the machine when dealing with the filter screen in the prior art. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a coolant filtration device for a numerical control machine tool to solve the above technical problems.

[0006] To solve the above technical problems, the utility model provides a coolant filtration device for a numerical control machine tool, including:

[0007] A filter tank, inside which a filtration mechanism is arranged, suitable for filtering the coolant; and

[0008] A cleaning mechanism, arranged on one side of the filtration mechanism, suitable for cleaning the filtration mechanism during the process of the filtration mechanism filtering the coolant.

[0009] Further, the cleaning mechanism includes:

[0010] A motor, arranged at the top of the filter tank; wherein

[0011] An exhaust component is arranged on the output end of the motor; and

[0012] An air pipe, one end of which is connected to the exhaust component, and the other end penetrates through the lower end of the outer wall of the filter tank and is located below the filtration mechanism; wherein

[0013] The trachea is adapted to introduce the gas generated in the exhaust assembly below the filtering mechanism when the motor starts, so as to clean the debris intercepted by the filtering mechanism.

[0014] Furthermore, the exhaust assembly includes:

[0015] A sleeve, arranged inside the filter tank and connected to one end of the trachea;

[0016] A rotating shaft, one end of which is connected to the output end of the motor, the other end passes through the sleeve and is located inside the sleeve, and a thread is arranged thereon; and

[0017] A piston member threadedly engaged with the rotating shaft, which is slidably connected to the inner wall of the sleeve; wherein

[0018] The piston member is adapted to engage with the rotating shaft when the motor starts, move along the axis direction of the sleeve, and squeeze the gas in the sleeve into the trachea.

[0019] Furthermore, a return spring is arranged below the piston member; wherein

[0020] One end of the return spring is connected to the lower end face inside the sleeve, and the other end is connected to the lower end face of the piston member; and

[0021] A chute is provided on the inner wall of the sleeve, and a slider is arranged on the outer wall of the piston member; wherein

[0022] The slider is slidably matched with the chute.

[0023] Furthermore, a one-way valve is arranged at the top end of the sleeve.

[0024] Furthermore, an auxiliary mechanism is arranged at the bottom end of the sleeve, which includes:

[0025] A stirring paddle connected to the bottom end of the rotating shaft; wherein

[0026] The stirring paddle is connected to the rotating shaft through an overrunning clutch.

[0027] Furthermore, the filtering mechanism includes:

[0028] A filter plate arranged inside the filter tank; wherein

[0029] The filter plate is located above the other end of the trachea; and

[0030] A plurality of filtering elements are arranged on the upper end face of the filter plate.

[0031] Furthermore, a water inlet pipe is arranged at the upper end of the outer wall of the filter tank; and

[0032] An outlet pipe is arranged at the bottom end of the filter tank.

[0033] The beneficial effects of the present utility model are as follows. By providing a cleaning mechanism, when the motor is started and the filtering mechanism filters the mixed liquid of coolant and debris introduced into the filtering tank, the cleaning mechanism continuously generates bubbles that are discharged upward from below the filtering mechanism, thereby cleaning the debris intercepted above the filtering mechanism, keeping the surface of the filtering mechanism unobstructed at all times and not affecting the filtering.

[0034] Other features and advantages of the present utility model will be described in the following specification. Moreover, some of them will become apparent from the specification or be understood by implementing the present utility model. The objectives and other advantages of the present utility model are achieved and obtained by the structures specifically pointed out in the specification and the drawings.

[0035] To make the above objectives, features, and advantages of the present utility model more obvious and understandable, the following specifically provides preferred embodiments and, in conjunction with the accompanying drawings, makes a detailed description as follows. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] To more clearly illustrate the specific embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the following-described drawings are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0037] Figure 1 is the overall three-dimensional structural schematic diagram of the present utility model;

[0038] Figure 2 is the overall sectional structural schematic diagram of the present utility model;

[0039] Figure 3 is the Figure 2 enlarged structural schematic diagram of part A in the present utility model.

[0040] In the figure:

[0041] 1. Cleaning mechanism; 10. Motor; 11. Rotating shaft; 12. Sleeve; 13. Chute; 14. Return spring; 15. Piston member; 16. Air pipe; 161. Air pipe valve;

[0042] 2. Auxiliary mechanism; 21. Overrunning clutch; 22. Stirring paddle;

[0043] 3. Filtering mechanism; 30. Filter plate; 31. Filtering element;

[0044] 4. Water inlet pipe; 40. Water inlet pipe valve;

[0045] 5. Water outlet pipe; 50. Water outlet pipe valve;

[0046] 6. Filter tank; 60. Maintenance opening. Detailed implementation manners

[0047] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Apparently, the described embodiments are some but not all of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts shall fall within the protection scope of the present utility model.

[0048] During the use of a numerical control machine tool, coolant is required to continuously cool the workpiece being machined to prevent overheating between the tool tip and the workpiece. After the coolant of the numerical control machine tool is sprayed out, it will be mixed with the workpiece debris. Before recycling, it is generally discharged mixed with the debris and filtered through a filtering device before being recycled. However, most of the existing filtering devices use filter meshes for filtering. During the long-term operation of the numerical control machine tool, the filter mesh will gradually become blocked, resulting in a reduction in the filtering effect, which in turn affects the circulation of the coolant. It is necessary to stop the machine to clean the filter mesh or replace the filter mesh, which affects the work efficiency.

[0049] To solve the above technical problems, in at least one embodiment, a coolant filtering device for a numerical control machine tool is provided, including: a filter tank 6, inside which a filtering mechanism 3 is provided and is adapted to filter the coolant; and a cleaning mechanism 1, provided on one side of the filtering mechanism 3 and adapted to clean the filtering mechanism 3 during the process of the filtering mechanism 3 filtering the coolant.

[0050] In this embodiment, by providing the cleaning mechanism 1, when the motor 10 is started, during the process of the filtering mechanism 3 filtering the mixed liquid of the coolant and debris introduced into the filter tank 6, the cleaning mechanism 1 continuously generates bubbles, which are discharged upward from below the filtering mechanism 3, thereby cleaning the debris intercepted above the filtering mechanism 3, so that the surface of the filtering mechanism 3 is always unobstructed and does not affect the filtering.

[0051] In some embodiments, for the filter tank 6, during the operation of the numerical control machine tool, the water inlet pipe 4 at the upper end of the outer wall of the filter tank 6 is connected to the coolant drain port of the numerical control machine tool. The water inlet valve 40 is opened, and the coolant mixed with debris is introduced into the filter tank 6 through the water inlet pipe 4 and falls on the upper end surface of the filter plate 30. Filtration is carried out through the filter element 31 on the upper end surface of the filter plate 30. The debris is intercepted on the upper end surface of the filter plate 30, while the coolant directly passes through the filter plate 30 to complete the filtration. The water outlet valve 50 is opened, and the coolant is discharged through the water outlet pipe 5 at the bottom of the filter tank 6 and re-introduced into the numerical control machine tool.

[0052] In some embodiments, during the filtration of the cooling liquid, the motor 10 is started, and its output end drives the rotating shaft 11 to rotate. As Figure 3 shown, the piston member 15 is in threaded engagement with the rotating shaft 11, and the slider on the outer side of the piston member 15 is slidably connected to the chute 13 formed on the inner wall of the sleeve 12. Therefore, the rotation of the rotating shaft 11 drives the piston member 15 to move upward along the axis of the rotating shaft 11, squeezing the air in the sleeve 12, introducing it into the trachea 16 through one end connected to the sleeve 12, and discharging it from the other end of the trachea 16. The re-discharged gas moves upward in the filter tank 6 and is discharged upward from below the filter plate 30, cleaning the debris remaining on the filter element 31 on the upper end surface of the filter plate 30, so that the debris is re-suspended in the filter tank 6, avoiding excessive debris clogging the filter element 31 due to long-term filtration.

[0053] In some embodiments, to assist the rapid filtration of the coolant, the motor 10 is controlled to rotate forward and backward intermittently. When the motor 10 rotates forward, the movement state of the piston member 15 is as described above, and the trachea valve 161 provided on the trachea 16 is a one-way valve. When the piston member 15 moves upward a certain distance (this distance can be set in advance by the operator), the motor 10 is started to rotate backward. At this time, the piston member 15 moves downward, and the return spring assists the piston member 15 to reset. Moreover, the one-way valve provided at the top of the sleeve 12 is opened, and air is re-introduced into the sleeve 12 for the next use. As the rotating shaft 11 rotates backward, it drives the stirring paddle 22 connected to it through the overrunning clutch 21 to rotate. The stirring paddle 22 rotates below the interior of the filter tank 6, causing the coolant in the filter tank 6 to form a spiral shape, thereby enabling the coolant to quickly pass through the filter plate 30 for filtration and improving the working efficiency.

[0054] In summary, by providing a cleaning mechanism, during the process of the filtration mechanism filtering the mixed liquid of the coolant and debris introduced into the filter tank by starting the motor, the cleaning mechanism continuously generates bubbles and discharges them upward from below the filtration mechanism, thereby cleaning the debris intercepted above the filtration mechanism and keeping the surface of the filtration mechanism always unobstructed, so as to achieve long-term filtration in a non-stop state.

[0055] In the description of the embodiments of the present invention, unless otherwise clearly defined and limited, the terms "installation", "connection", and "connection" shall 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 directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0056] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0057] Taking the above-mentioned ideal embodiment of the present utility model as an inspiration, through the above description, relevant staff can completely make various changes and modifications within the scope of not deviating from the technical idea of the present utility model. The technical scope of the present utility model is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A coolant filter device for a CNC machine tool, characterized in that: include: A filter tank, which is provided with a filter mechanism inside and is suitable for filtering the coolant; as well as The cleaning mechanism is arranged on one side of the filter mechanism and is suitable for cleaning the filter mechanism during the process of filtering the coolant by the filter mechanism; The cleaning mechanism comprises: The motor is arranged at the top of the filter tank; An exhaust assembly is provided on the output end of the motor; and The air pipe has one end connected to the exhaust assembly and the other end passing through the lower end of the outer wall of the filter tank and is located below the filter mechanism; The air pipe is suitable for introducing the gas generated in the exhaust assembly to the bottom of the filter mechanism when the motor is started, so as to clean the debris intercepted by the filter mechanism.

2. The coolant filter device according to claim 1, characterized in that: The exhaust assembly comprises: A sleeve is arranged inside the filter tank and connected to one end of the air pipe; A rotating shaft, one end of which is connected to the output end of the motor, and the other end of which passes through the sleeve and is located inside the sleeve, and is provided with a thread; and A piston member threadedly engaged with the rotating shaft is slidably connected to the inner wall of the sleeve; wherein The piston is adapted to mesh with the rotating shaft when the motor is started, move along the axial direction of the sleeve, and squeeze the gas in the sleeve into the air pipe.

3. The coolant filter device according to claim 2, characterized in that: A return spring is arranged below the piston member; One end of the return spring is connected to the lower end surface of the sleeve, and the other end is connected to the lower end surface of the piston; and The inner wall of the sleeve is provided with a sliding groove, and the outer wall of the piston is provided with a sliding block; wherein The sliding block is slidably matched with the sliding groove.

4. The coolant filter device according to claim 3, characterized in that: A one-way valve is arranged on the top end of the sleeve.

5. The coolant filter device according to claim 4, characterized in that: The bottom end of the sleeve is provided with an auxiliary mechanism, which includes: A stirring paddle connected to the bottom end of the rotating shaft; wherein The stirring paddle is connected to the rotating shaft via an overrunning clutch.

6. The coolant filter device according to claim 5, characterized in that: The filtering mechanism comprises: A filter plate is arranged inside the filter tank; wherein The filter plate is located above the other end of the trachea; and The upper surface of the filter plate is provided with a plurality of filter elements.

7. The coolant filter device according to claim 6, characterized in that: A water inlet pipe is provided at the upper end of the outer wall of the filter tank; and The bottom end of the filter tank is provided with a water outlet pipe.

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