Cutting fluid suction mechanism

Abstract

The utility model relates to waste cutting fluid treatment equipment technical field, concretely relates to a cutting fluid liquid suction mechanism. A kind of cutting fluid liquid suction mechanism includes box, negative pressure device and filter basket. The inner wall of box top is installed with baffle downward along vertical direction, baffle is used to separate the inside of box into left cavity and right cavity and bottom mutual communication. Box is equipped with liquid inlet communicating left cavity and liquid outlet communicating right cavity. Negative pressure device is installed in box top and communicates right cavity. It is separated into two parts by baffle, and liquid inlet and negative pressure device are separately arranged on the two sides of baffle, which makes waste cutting fluid entering through liquid inlet not be sucked into negative pressure device under the block of baffle when negative pressure device continuously sucks inside of box, thereby effectively solve the technical problem that vacuum suction device in prior art is easy to cause blockage due to suction of particulate matter, so as to ensure that cutting fluid liquid suction mechanism can continuously and stably suck liquid.

Description

Technical Field

[0001] This utility model relates to the technical field of waste cutting fluid treatment equipment, specifically to a cutting fluid suction mechanism. Background Technology

[0002] Cutting fluid is an industrial liquid used in metal cutting and grinding processes to cool and lubricate cutting tools and workpieces. It is scientifically formulated with various high-performance additives, possessing excellent cooling, lubrication, rust prevention, degreasing and cleaning, corrosion prevention, and easy dilution properties. It overcomes the problems of traditional soap-based emulsions, such as odor in summer, difficulty in dilution in winter, and poor rust prevention. It also has no adverse effects on lathe paint and is suitable for cutting and grinding ferrous metals, making it a leading grinding product. Due to its high performance and relatively high cost, companies typically purify and recycle cutting fluid. However, waste cutting fluid generally contains organic components, which can easily lead to the growth of bacteria, fungi, and other microorganisms. These microorganisms can cause the cutting fluid to smell, separate, and experience reduced lubrication. Therefore, it is necessary to regularly empty and clean the tanks storing waste cutting fluid or periodically remove the floating oil from the surface of the waste cutting fluid. Existing technologies typically employ vacuum suction devices to treat waste cutting fluid. However, these devices are prone to clogging due to the suction pump drawing in particulate matter, necessitating frequent shutdowns and manual cleaning, resulting in low suction efficiency. Furthermore, existing vacuum suction devices can only perform vacuum suction of waste cutting fluid, leading to limited practicality. Utility Model Content

[0003] To address the practicality issues of existing vacuum suction devices, which are prone to clogging when vacuum suctioning waste cutting fluid, this invention provides a cutting fluid suction mechanism.

[0004] This utility model adopts the following technical solution: a cutting fluid suction mechanism, which includes a housing, a negative pressure device, and at least one filter basket. A baffle is installed vertically downwards on the inner wall of the top of the housing, dividing the interior of the housing into a left cavity and a right cavity, the bottoms of which are interconnected. The housing has an inlet and an outlet. The inlet is located on the top of the housing near the left cavity and connects to the left cavity; the outlet is located on the bottom of the housing near the right cavity and connects to the right cavity. The negative pressure device is installed on the top of the housing near the right cavity and connects to the right cavity. The negative pressure device creates a negative pressure throughout the housing by suctioning the right cavity. The filter basket is installed horizontally in the left cavity of the housing, with its end abutting against the baffle. The opening of the filter basket is aligned with the inlet, and the filter basket is used to filter the waste cutting fluid entering through the inlet.

[0005] As a further improvement of this utility model, the baffle is provided with multiple through holes, which are distributed sequentially upward along the bottom of the baffle. The through hole at the top of the baffle is positioned vertically below the point where the filter basket abuts against the baffle.

[0006] As a further improvement of this utility model, the diameter of the filter basket gradually narrows along the vertical direction; there are two filter baskets, which are arranged sequentially along the vertical direction, with the opening of the lower filter basket aligned with the bottom of the upper filter basket.

[0007] As a further improvement of this utility model, the baffle includes a straight plate 1, a horizontal plate 1, a straight plate 2, a horizontal plate 3, and a straight plate 4 connected in sequence. The straight plate 1 is fixedly installed at the top of the housing. One end of the horizontal plate 2 is fixed to the end of the straight plate 1, and the other end of the horizontal plate 1 extends to the right of the cavity and connects to the upper end of the straight plate 2. The lower end of the straight plate 2 is connected to one end of the horizontal plate 2, and the other end of the horizontal plate 2 extends to the left of the cavity and connects to the upper end of the straight plate 3. A gap is provided between the lower end of the straight plate 3 and the bottom of the housing. The horizontal plate 1, the straight plate 2, and the horizontal plate 3 form a groove recessed to the right of the cavity, and the filter basket is inserted into the groove horizontally.

[0008] As a further improvement of this utility model, guide rails are respectively installed on the two side walls along the horizontal direction inside the box. The height of the guide rails in the vertical direction is lower than the height of the first horizontal plate, and the end of the guide rails abuts against the second vertical plate. A snap-fit ​​groove is formed between the first horizontal plate, the second vertical plate, and the guide rails. A plug-in block is provided on one side of the filter basket facing the guide rails. The plug-in block is inserted into the snap-fit ​​groove along the guide rails.

[0009] As a further improvement of this utility model, the end of the guide rail is provided with a notch, which connects the snap-fit ​​groove and the left cavity. The notch is used to remove the debris accumulated in the snap-fit ​​groove.

[0010] As a further improvement of this utility model, a slag removal port is provided on the left side wall of the housing, which connects to the left cavity. The size of the slag removal port is larger than the maximum cross-sectional area of ​​the filter basket in the vertical direction. Both filter baskets are installed on the inner wall of the housing through the slag removal port. An openable door is also installed at the slag removal port for opening or closing the slag removal port.

[0011] As a further improvement of this utility model, a fixed bracket is installed horizontally on the front and rear side walls of the left cavity inside the box. The fixed bracket is flush with the horizontal plate two in the vertical direction. The filter basket is suspended in the left cavity through the fixed bracket and the horizontal plate two.

[0012] In a typical technical solution of this utility model, the negative pressure device includes a fan and a negative pressure pipe. The negative pressure pipe is installed on the top of the box, and its two ends are connected to the fan and the right cavity, respectively. A filter screen is installed inside the negative pressure pipe to prevent impurities from being sucked into the fan.

[0013] As a further improvement of this utility model, the negative pressure pipe is a three-way pipe; the first joint of the three-way pipe is connected to the right cavity, the second joint of the three-way pipe is connected to the fan, and the third joint of the three-way pipe is connected to the air and has a vacuum pressure relief valve installed inside it. The vacuum pressure relief valve is used to connect or disconnect the third joint and the air.

[0014] The technical solution provided by this utility model has the following beneficial effects:

[0015] (1) The cutting fluid suction mechanism provided by this utility model divides the box into two parts by a baffle, and the inlet and the negative pressure device are respectively located on both sides of the baffle. The inlet is connected to the left cavity, the negative pressure device is connected to the right cavity, and the bottoms of the left cavity and the right cavity are connected to each other. This ensures that when the negative pressure device continuously sucks the inside of the box, the waste cutting fluid entering through the inlet will not be sucked into the negative pressure device due to the obstruction of the baffle. This effectively solves the technical problem that the vacuum suction device in the prior art is prone to blockage due to the suction of particulate matter, thereby ensuring that the cutting fluid suction mechanism can continuously and stably suck the fluid.

[0016] (2) The cutting fluid suction mechanism provided by this utility model, through the coordinated action of the baffle and the filter basket, ensures that impurities in the cutting fluid entering the tank through the inlet will not enter the negative pressure device. This allows the entire suction operation to be carried out continuously and stably, protects the negative pressure device, and filters the impurities in the suctioned cutting fluid. Thus, the suction mechanism in this solution has both suction and filtration functions, improving the practicality of the suction mechanism. Attached Figure Description

[0017] Figure 1 A three-dimensional structural diagram of the cutting fluid suction mechanism provided by this utility model.

[0018] Figure 2 This is a three-dimensional front view of the cutting fluid suction mechanism provided by this utility model.

[0019] Figure 3 A schematic diagram of the internal structure of the cutting fluid suction mechanism provided by this utility model.

[0020] Figure 4 A schematic diagram of the internal structure of the cutting fluid suction mechanism provided by this utility model (part of the housing is not shown).

[0021] Figure 5 A schematic diagram of the structure of the baffle provided by this utility model.

[0022] Figure 6 This is a schematic diagram of the liquid level sensing device provided by this utility model.

[0023] Figure 7This is a schematic diagram of the internal structure of the liquid level sensing device provided by this utility model.

[0024] The markings in the diagram are as follows: 1. Box body; 11. Left cavity; 12. Right cavity; 13. Liquid inlet; 14. Liquid outlet; 15. Sludge removal port; 16. Door; 2. Baffle; 21. Through hole; 22. Straight plate one; 23. Horizontal plate one; 24. Straight plate two; 25. Horizontal plate two; 26. Straight plate three; 27. Groove; 31. Negative pressure pipe; 41. Filter basket one; 42. Filter basket two; 5. Liquid level sensing device; 51. Sleeve; 52. Connecting rod; 53. Magnetic sensor. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0026] This embodiment provides a cutting fluid suction mechanism; please refer to [reference needed]. Figures 1 to 3The device includes a housing 1, a negative pressure device, and at least one filter basket. A baffle 2 is installed vertically downwards on the inner wall of the top of the housing 1, dividing the interior of the housing 1 into a left cavity 11 and a right cavity 12, with the bottoms of the left cavity 11 and right cavity 12 interconnected. The housing 1 has an inlet 13 and an outlet 14. The inlet 13 is located on the top of the housing 1 near the left cavity 11 and is connected to the left cavity 11. The outlet 14 is located on the bottom of the housing 1 near the right cavity 12 and is connected to the right cavity 12. The negative pressure device is installed on the top of the housing 1 near the right cavity 12 and is connected to the right cavity 12. The negative pressure device creates a negative pressure throughout the housing 1 by suctioning the right cavity 12. In this embodiment, the housing 1 is divided into two parts by a baffle 2, with the inlet 13 and the negative pressure device located on opposite sides of the baffle 2. The inlet 13 connects to the left cavity 11, and the negative pressure device connects to the right cavity 12, with the bottoms of the left and right cavities interconnected. This ensures that when the negative pressure device continuously pumps air into the housing 1, the waste cutting fluid entering through the inlet 13 is prevented from being drawn into the negative pressure device by the baffle 2, effectively solving the technical problem of blockage caused by the suction of particulate matter in existing vacuum suction devices. A filter basket is installed horizontally inside the left cavity 11, with its end abutting against the baffle 2. The opening of the filter basket is aligned with the inlet 13, and the filter basket is used to filter the incoming waste cutting fluid. In actual operation, the right cavity 12 is first suctioned using a negative pressure device. The bottom of the right cavity 12 is connected to the bottom of the left cavity 11, allowing suction of the entire interior of the housing 1, creating a negative pressure environment. Under this negative pressure, the waste cutting fluid to be treated enters the left cavity 11 through the inlet 13. The waste cutting fluid entering the left cavity 11 is filtered through a filter basket and temporarily stored at the bottom of the housing 1. When needed, the filtered waste cutting fluid can be discharged through the outlet 14. This embodiment uses a baffle 2 to separate the inlet 13 and the negative pressure device into different cavities. This allows the suction mechanism to create a negative pressure environment inside the housing 1 during suction. Simultaneously, the baffle 2 prevents impurities in the cutting fluid entering through the inlet 13 from entering the negative pressure device and causing blockages. This ensures that the suction mechanism in this embodiment can continuously and stably perform suction. In addition, the filter basket can also filter the sucked-in cutting fluid. Through the synergistic action of the baffle 2 and the filter basket, this design prevents impurities in the cutting fluid entering the housing 1 through the inlet 13 from entering the negative pressure device. This ensures the continuous and stable operation of the suction process, protects the negative pressure device, and filters impurities in the sucked-in cutting fluid. Therefore, the suction mechanism in this design combines suction and filtration functions, improving its practicality.

[0027] Please refer to Figures 3 to 5 The baffle 2 can be provided with multiple through holes 21, which are distributed sequentially upwards along the bottom of the baffle 2. The uppermost through hole 21 of the baffle 2 is positioned vertically below the point where the filter basket abuts against the baffle 2. This arrangement allows the baffle 2 to vertically separate the area from the inlet 13 to the filter basket from the right cavity 12, creating a U-shaped channel inside the housing 1. This effectively prevents liquid entering through the inlet 13 from crossing the baffle 2 and being sucked into the negative pressure device in the area between the inlet 13 and the filter basket, thus protecting the negative pressure device. This prevents frequent shutdowns for maintenance due to blockages, ensuring the entire suction mechanism can operate continuously and stably, and improving its suction efficiency. In addition, multiple through holes 21 are provided on the baffle 2 so that the left cavity 11 and the right cavity 12 are connected below the filter basket. This allows the negative pressure device to form a relatively stable negative pressure environment inside the entire box 1 by suctioning the second cavity when using a smaller suction pressure, thereby ensuring that the liquid suction mechanism can perform liquid suction operation, and also reducing the load on the negative pressure device itself.

[0028] Please refer to Figures 3 to 5 The baffle 2 includes a straight plate 22, a horizontal plate 23, a straight plate 24, a horizontal plate 25, and a straight plate 26 connected in sequence. The straight plate 22 is fixedly installed at the top inside the housing 1. One end of the horizontal plate 23 is fixed to the end of the straight plate 22, and the other end of the horizontal plate 23 extends towards the right cavity 12 and connects to the upper end of the straight plate 24. The lower end of the straight plate 24 connects to one end of the horizontal plate 25, and the other end of the horizontal plate 25 extends towards the left cavity 11 and connects to the upper end of the straight plate 26. A gap is provided between the lower end of the straight plate 26 and the bottom of the housing 1. The horizontal plate 23, the straight plate 24, and the horizontal plate 25 form a recessed groove 27 towards the right cavity 12, into which the filter basket is inserted horizontally. The groove 27 allows for positioning of the filter basket, improving its stability during installation. Furthermore, after the filter basket is inserted into the groove 27, the baffle 2 is located above the filter basket, and the other end of the filter basket also abuts against the left side wall of the housing 1. This allows all the cutting fluid entering through the inlet 13 to enter the filter basket for filtration. In this embodiment, by setting the baffle 2 with a multi-segment curved structure, it not only separates the inlet 13 and the negative pressure device into different cavities but also stabilizes the liquid level, keeping the liquid level in the right cavity 12 stable. At the same time, it also strengthens the housing 1, reduces the need for reinforcing ribs inside the housing 1, prevents dirt and grime from accumulating inside the housing 1, and facilitates cleaning of the housing 1.

[0029] The filter basket gradually narrows in diameter along the vertical direction. This design allows the cutting fluid entering the filter basket to move quickly towards the bottom, thereby accelerating the filtration speed. In this embodiment, two filter baskets are preferred, namely filter basket one 41 and filter basket two 42. The cross-sectional area of ​​filter basket one 41 in the vertical direction is greater than or equal to the cross-sectional area of ​​filter basket two 42 in the vertical direction. Filter basket one 41 and filter basket two 42 are arranged sequentially along the vertical direction, with the opening of filter basket two 42 aligned with the bottom of filter basket one 41. Using two filter baskets can further improve the filtration effect. Guide rails are installed on the two side walls along the horizontal direction inside the housing 1. The height of the guide rails in the vertical direction is lower than the height of the horizontal plate one 23, and the end of the guide rail abuts against the vertical plate two 24. The guide rails, the vertical plate two 24, and the horizontal plate one 23 form a snap-fit ​​groove. A plug-in block is provided on one side of the filter basket one 41 facing the guide rail. The plug-in block is inserted into the snap-fit ​​groove along the guide rail. By setting a guide rail, and the end of the guide rail, together with the straight plate 24 and the horizontal plate 23, can form a snap-fit ​​groove, the filter basket 41 can be stably installed in the left cavity 11 through the guide rail and the snap-fit ​​groove.

[0030] The guide rail has a notch at one end near the straight plate 24, which connects the snap-fit ​​groove and the left cavity 11. The notch is used to remove debris accumulated in the snap-fit ​​groove. By setting the notch, debris in the snap-fit ​​groove can be cleaned in a timely manner, preventing it from accumulating in the snap-fit ​​groove and causing the filter basket 41 to fail to be pushed into place.

[0031] Inside the housing 1, fixed brackets are installed horizontally on the front and rear side walls of the left cavity 11. These fixed brackets are located below the guide rails, and their vertical height is flush with the horizontal plate 25. The filter basket 42 is suspended inside the left cavity 11 via the fixed brackets and the horizontal plate 25. It is understood that the above description is only one common method of fixing the filter basket in this application; other common methods of fixing filter baskets in the prior art can also be used in this application.

[0032] Please refer to Figure 3 and Figure 4A slag removal port 15 is provided on the left side wall of the housing 1, connecting to the left cavity 11. The size of the slag removal port 15 is larger than the maximum cross-sectional area of ​​filter basket 41 in the vertical direction. Both filter basket 41 and filter basket 42 can be installed on the inner wall of the housing 1 through the slag removal port 15. In practical applications, filter basket 42 can be placed in the left cavity 11 through the slag removal port 15, so that filter basket 42 is suspended in the left cavity 11 by the fixed bracket and the horizontal plate 25. Then, filter basket 41 is slidably inserted into the left cavity 11 through the guide rail, so that the bottom of filter basket 41 is aligned with the opening of filter basket 42, thus completing the installation of filter basket 41 and filter basket 42. Setting two filter baskets can enhance the liquid suction effect of the liquid suction mechanism. Filter basket 41 can be a pull-out filter basket, and filter basket 42 can be a lift-up filter basket. Both installation methods can quickly install the filter baskets. Meanwhile, by setting two filter baskets, when the filter basket 41 is pulled out for slag removal, the slag falling from the guide rail or the filter basket 41 will be intercepted by the filter basket 42 below, which can effectively prevent this part of the slag from falling into the cutting fluid at the bottom of the housing 1 and causing pollution to the cutting fluid.

[0033] A closable door 16 can also be installed at the sludge removal port 15. The door 16 is used to open or close the sludge removal port 15. The purpose of setting an closable door 16 at the sludge removal port 15 is that when liquid aspiration is required, the door 16 can be closed first, so that the inside of the box 1 is in a sealed environment, which facilitates the negative pressure device to evacuate the inside of the box 1. At the same time, when it is necessary to clean the filter residue in the filter basket, the filter basket can be taken out by opening the door 16 and the filter residue in the filter basket can be poured out.

[0034] Door 16 can be hinged to the left side wall of housing 1, and a handle can also be installed on door 16 to lock or open door 16. The handle can be an emergency handle.

[0035] The negative pressure device includes a fan and a negative pressure pipe 31. The negative pressure pipe 31 is installed on the top of the housing 1, and its two ends are connected to the fan and the right cavity 12, respectively. The fan draws air from the right cavity 12 through the negative pressure pipe 31 to create a negative pressure environment in the housing 1. A filter screen is installed inside the negative pressure pipe 31 to prevent impurities from being drawn into the fan, thus enabling the negative pressure device to stably draw air from the housing 1 while also protecting the fan.

[0036] The negative pressure pipe 31 can be a tee pipe. The first joint of the tee pipe is connected to the right cavity 12, the second joint of the tee pipe is connected to the fan, and the third joint of the tee pipe is connected to air and has a vacuum relief valve installed inside. The vacuum relief valve is used to connect or disconnect the third joint from the air. By installing a vacuum relief valve in the third joint, it can open and introduce air into the box 1 when the negative pressure inside the box 1 is too high.

[0037] Please refer to Figure 6 and Figure 7 Two liquid level sensors 5 can also be installed inside the tank 1. One liquid level sensor 5 is used to detect whether the liquid level in the tank 1 has reached the maximum liquid level, and can be called the maximum liquid level sensor 5. The other liquid level sensor 5 is used to detect whether the liquid level in the tank 1 has reached the minimum liquid level, and can be called the minimum liquid level sensor 5. The maximum liquid level sensor 5 and the minimum liquid level sensor 5 have the same structure, both including a sleeve 51, a connecting rod 52 with a float, and a magnetic sensor 53. The sleeve 51 has an opening at one end. The end of the connecting rod 52 away from the float is slidably installed inside the sleeve 51. A magnetic block is installed on the end of the connecting rod 52 away from the float. The magnetic block is fixed to the connecting rod 52 by fasteners. The magnetic sensor 53 is installed at the upper end of the sleeve 51 and can be electrically connected to the controller. The connecting rod 52 of the highest liquid level sensor 5 is relatively short and is used to detect the highest liquid level in the tank 1, while the connecting rod 52 of the lowest liquid level sensor 5 is relatively long and is used to detect the lowest liquid level in the tank 1. In this embodiment, when the liquid level in the tank 1 rises to the highest liquid level, the float on the highest liquid level sensor 5 pushes the connecting rod 52 upward, and the magnetic block at the upper end of the connecting rod 52 passes through the magnetic sensor 53. At this time, the magnetic sensor 53 can send a high liquid level signal to the controller. When the liquid level in the tank 1 drops to the lowest liquid level, the float on the lowest liquid level sensor 5 falls under the action of gravity. At this time, the magnetic block at the upper end of the connecting rod 52 passes through the magnetic sensor 53 from top to bottom, and the magnetic sensor 53 on the lowest liquid level sensor 5 can send a low liquid level signal to the controller.

[0038] The sleeve 51 is also equipped with a mounting base, through which the liquid level sensing device 5 can be installed inside the housing 1, and the end of the connecting rod 52 with the float ball is inserted into the bottom of the housing 1. In this embodiment, the magnetic sensor 53 is installed on the outer side of the top of the housing 1, which will not come into contact with the liquid, and will not cause problems such as signal mistransmission, failure, or aging due to oil contamination, thus improving its sensitivity. When the length of the connecting rod 52 is long, rings can be evenly arranged on the connecting rod 52. The outer diameter of the arranged rings is smaller than the inner diameter of the collar. By setting multiple rings, a coaxial guiding and stabilizing effect can be achieved between the connecting rod 52 and the sleeve 51, so that the connecting rod 52 can move up and down along the axial direction of the sleeve 51.

[0039] The outlet 14 can also be equipped with an outlet pipe, which can be a tee pipe. The first connector of the outlet pipe is connected to the right cavity 12, and the second connector of the outlet pipe is set vertically downward for sewage discharge. The third connector of the outlet pipe is set horizontally and is used to connect to a pump, which can transport the filtered liquid in the tank 1 to the outside of the tank 1. A check valve can be installed in the third connector to prevent the liquid in the outlet pipe from flowing back into the tank 1 and disrupting the vacuum liquid suction effect inside the tank 1.

[0040] The following describes the operation procedure of the cutting fluid suction mechanism: First, close door 16, turn on the blower, and insert the suction hose connected to the inlet 13 into the fluid tank to be suctioned. Due to the negative pressure created inside the housing 1 by the blower, the cutting fluid, floating oil, and slag powder in the fluid tank are all drawn into the housing 1. These substances drawn into the housing 1 are then filtered sequentially through filter basket 41 and filter basket 42. Under the filtration of filter basket 41 and filter basket 42, the slag in the cutting fluid is trapped by either filter basket 41 or filter basket 42. When the suction speed of the suction hose decreases, turn off the blower, open door 16, and remove filter basket 41 and filter basket 42 from the housing 1 for emptying. After emptying, reinstall the two filter baskets into the housing 1, close door 16, and turn on the blower to continue suction. When the liquid level in tank 1 rises, the float pushes the connecting rod 52 upwards. The magnetic block at the upper end of the connecting rod 52 passes through the magnetic sensor 53. At this time, the magnetic sensor 53 sends a high liquid level signal to the controller, which then stops the blower. Simultaneously, the outlet 14 at the bottom of tank 1 is opened to drain the liquid. When the liquid level in tank 1 drops, the minimum liquid level sensor 5 sends a minimum liquid level signal to the controller, which then restarts the blower to perform suction. Through this series of operations, continuous and stable liquid suction and drainage operations can be achieved.

[0041] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A cutting fluid suction mechanism, characterized in that, It includes: The box (1) has a baffle (2) installed vertically downward on the inner wall of its top. The baffle (2) is used to divide the interior of the box (1) into a left cavity (11) and a right cavity (12). The bottoms of the left cavity (11) and the right cavity (12) are connected to each other. The box (1) is provided with a liquid inlet (13) and a liquid outlet (14). The liquid inlet (13) is located on the top of the box (1) near the left cavity (11) and is connected to the left cavity (11). The liquid outlet (14) is located on the bottom of the box (1) near the right cavity (12) and is connected to the right cavity (12). The negative pressure device is installed on the top of the box (1) near the right cavity (12) and connected to the right cavity (12); the negative pressure device creates negative pressure inside the entire box (1) by sucking up the right cavity (12); At least one filter basket is installed horizontally in the left cavity (11) of the housing (1) and its end abuts against the baffle (2). The opening of the filter basket is aligned with the liquid inlet (13). The filter basket is used to filter the waste cutting fluid entering through the liquid inlet (13).

2. The cutting fluid suction mechanism as described in claim 1, characterized in that, The baffle (2) is provided with a plurality of through holes (21), which are distributed sequentially upward along the bottom of the baffle (2). The through hole (21) located at the uppermost end of the baffle (2) is lower than the abutting point of the filter basket against the baffle (2) in the vertical direction.

3. The cutting fluid suction mechanism as described in claim 1, characterized in that, The diameter of the filter basket gradually tapers along the vertical direction; there are two filter baskets, which are arranged sequentially along the vertical direction, with the opening of the lower filter basket aligned with the bottom of the upper filter basket.

4. The cutting fluid suction mechanism as described in claim 1, characterized in that, The baffle (2) includes a straight plate one (22), a horizontal plate one (23), a straight plate two (24), a horizontal plate two (25), and a straight plate three (26) connected in sequence; the straight plate one (22) is fixedly installed at the top inside the box (1), one end of the horizontal plate two (25) is fixed to the end of the straight plate one (22), and the other end of the horizontal plate one (23) extends towards the right cavity (12) and connects to the upper end of the straight plate two (24); the straight plate two (24) The lower end is connected to one end of the second horizontal plate (25), and the other end of the second horizontal plate (25) extends towards the left cavity (11) and connects to the upper end of the third straight plate (26); the lower end of the third straight plate (26) is provided with a gap from the bottom of the box (1); the first horizontal plate (23), the second straight plate (24) and the second horizontal plate (25) form a groove (27) that is recessed towards the right cavity (12), and the filter basket is inserted into the groove (27) in the horizontal direction.

5. The cutting fluid suction mechanism as described in claim 4, characterized in that, Guide rails are installed on the two side walls along the horizontal direction inside the box (1). The height of the guide rails in the vertical direction is lower than the height of the first horizontal plate (23), and the end of the guide rails abuts against the second straight plate (24). A snap-fit ​​groove is formed between the first horizontal plate (23), the second straight plate (24), and the guide rails. A plug-in block is provided on the side of the filter basket facing the guide rails. The plug-in block is inserted into the snap-fit ​​groove along the guide rails.

6. The cutting fluid suction mechanism as described in claim 5, characterized in that, The guide rail has a notch at its end, which connects the snap-fit ​​groove and the left cavity (11). The notch is used to remove debris accumulated in the snap-fit ​​groove.

7. The cutting fluid suction mechanism as described in claim 1, characterized in that, A slag removal port (15) is provided on the left side wall of the box (1), the slag removal port (15) is connected to the left cavity (11), and the size of the slag removal port (15) is greater than the maximum cross-sectional area of ​​the filter basket in the vertical direction; both filter baskets are installed on the inner wall of the box (1) from the slag removal port (15); an openable door (16) is also installed at the slag removal port (15), the door (16) is used to open or close the slag removal port (15).

8. The cutting fluid suction mechanism as described in claim 4, characterized in that, A fixed bracket is installed horizontally on the front and rear side walls of the box (1) located on one side of the left cavity (11). The fixed bracket is flush with the horizontal plate (25) in the vertical direction. The filter basket is suspended in the left cavity (11) through the fixed bracket and the horizontal plate (25).

9. The cutting fluid suction mechanism as described in claim 1, characterized in that, The negative pressure device includes a fan and a negative pressure pipe (31). The negative pressure pipe (31) is installed on the top of the housing (1). The two ends of the negative pressure pipe (31) are connected to the fan and the right cavity (12) respectively. A filter screen is installed inside the negative pressure pipe (31) to prevent impurities from being sucked into the fan.

10. The cutting fluid suction mechanism as described in claim 9, characterized in that, The negative pressure pipe (31) is a three-way pipe; the first joint of the three-way pipe is connected to the right cavity (12), the second joint of the three-way pipe is connected to the fan, and the third joint of the three-way pipe is connected to the air and has a vacuum relief valve installed inside it. The vacuum relief valve is used to connect or disconnect the third joint and the air.

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