Machine tool cooling pump with anti-blocking structure

Abstract

This invention relates to a machine tool cooling pump with an anti-clogging structure in the field of pump equipment. Through a guide cylinder, a filter cylinder, and a centrifugal impeller integrated within the pump casing, the negative pressure generated by the rotation of the centrifugal impeller performs negative pressure centrifugal filtration of the coolant, improving filtration efficiency. Simultaneously, debris in the coolant is trapped within the annular cavity formed by the guide cylinder and the filter cylinder, and a spiral scraper cleans the inner wall of the filter cylinder, reducing debris accumulation on its inner surface. Furthermore, an annular cylinder fixed to the outside of the end cap and communicating with the annular cavity allows debris trapped in the annular cavity to be injected into the annular cylinder for centralized collection under the pushing action of the spiral scraper, achieving active debris collection without the need for disassembling and cleaning the filter cylinder, thus improving the integration and maintenance convenience of the machine tool cooling pump. In addition, a clearing mechanism installed within the filter holes maintains the filtration efficiency of the filter cylinder by clearing the filter holes.

Description

Technical Field

[0001] This invention relates to a machine tool cooling pump, and more particularly to a machine tool cooling pump with an anti-clogging structure for use in the field of pump body equipment. Background Technology

[0002] Machine tool coolant pumps are an indispensable component of machine tool equipment. Their structure typically includes key components such as pump body, motor, impeller, and sealing device. The pump drives the impeller to rotate through the motor, thereby drawing and delivering coolant to the cutting area of ​​the machine tool, effectively removing the large amount of heat generated during the cutting process, ensuring stable operation of the machine tool and workpiece machining quality. During the circulation process, the coolant not only plays a cooling role, but also lubricates the cutting tools and washes away chips, which is crucial for improving machining efficiency and extending the life of the machine tool.

[0003] In practical applications, to prevent metal shavings, oil stains, and other impurities in the coolant from entering the coolant pump and causing blockage or wear, modern machine tool coolant pumps are designed with a series of protective measures. Among them, the most common practice is to install an external filter cartridge or other form of slag removal device in the system. These devices can effectively trap and collect large particulate impurities in the coolant. At the same time, the coolant pump inlet is also equipped with a precision filter screen to further block fine debris from entering the pump body, ensuring the purity and smooth flow of the coolant.

[0004] While these measures significantly reduce the risk of debris clogging the cooling pump, they also present certain maintenance challenges. External filter cartridges and screens require regular disassembly, cleaning, or replacement, a process that is not only tedious and time-consuming but also prone to coolant leaks due to improper operation, impacting production schedules. Furthermore, the added filtration and debris removal equipment increases the overall volume of the coolant circulation system, posing a significant challenge for machine tool operating environments with limited space.

[0005] The existing patent with publication number CN215566933U discloses an anti-clogging machine tool coolant pump, and specifically discloses a filter screen and scraper installed in the inlet pipe of the pump body. However, as the machine tool coolant is circulated, the debris cleaned by the scraper on the surface of the filter screen tends to accumulate on the outside of the filter screen, which not only affects the circulation efficiency of the coolant, but also requires frequent disassembly and cleaning of the pipe and filter screen when the debris content in the coolant is large. Summary of the Invention

[0006] The technical problem that this invention aims to solve in view of the above-mentioned prior art is that the filter screen at the inlet end of the existing machine tool cooling pump needs to be periodically disassembled and cleaned, which affects the continuous operation of the machine tool equipment.

[0007] To solve the above problems, the present invention provides a machine tool cooling pump with an anti-clogging structure, including a base, a pump housing fixedly connected to the base, an end cap fixedly connected to the left end of the pump housing, an inlet pipe fixedly connected to the left end of the end cap communicating with the inner cavity of the pump housing, a guide cylinder fixedly connected to the side wall of the end cap away from the inlet pipe, a filter cylinder fixedly connected to the end cap on the outside of the guide cylinder, filter holes evenly distributed on the circumferential side wall of the filter cylinder, a centrifugal impeller rotatably connected to the filter cylinder on the outside of the filter cylinder, an output shaft of a motor fixedly connected to the right side of the centrifugal impeller, and an outlet pipe fixedly connected to the upper part of the pump housing;

[0008] An annular cavity is formed between the guide cylinder and the filter cylinder. A fixed plate is fixedly connected to the side wall of the centrifugal impeller facing the guide cylinder. An annular gap communicating with the annular cavity is formed between the fixed plate and the guide cylinder. A spiral scraper is nested inside the annular cavity and slides against its inner wall. The right end of the spiral scraper is fixedly connected to the fixed plate. A discharge hole communicating with the annular cavity is opened on the end cover. An annular cylinder communicating with the discharge hole is fixedly connected to the side wall of the end cover away from the spiral scraper.

[0009] In the aforementioned machine tool coolant pump with an anti-clogging structure, the coolant pump filter cartridge can be cleaned without disassembly by means of a guide cylinder and a filter cartridge that form an annular cavity, as well as a spiral scraper set in the annular cavity.

[0010] As a further improvement of this application, a clearing mechanism is fixedly connected inside the filter hole. The clearing mechanism includes an installation cylinder that is fixedly connected to the inner wall of the filter hole and has openings at both ends. A sliding plug extending into the filter cylinder is slidably connected to the opening of the installation cylinder facing the inner side of the filter cylinder. The sliding plug has a through hole.

[0011] A pair of elastic support assemblies are fixedly connected to the outer wall of the mounting cylinder on the side of the sliding plug. The outer end of the elastic support assembly is fixedly connected to the fixed rod, and the fixed rod is fixedly connected to the inner wall of the mounting cylinder. The elastic support assembly includes an outer piston rod fixedly connected to the sliding plug. The outer piston rod is slidably connected to an outer piston cylinder fixedly connected to the fixed rod. A radial spring that abuts against the outer piston rod is provided inside the outer piston cylinder.

[0012] As a further improvement of this application, a central piston cylinder is fixedly connected to the fixing rod and faces the through hole. A central piston rod extending to one side of the through hole is slidably connected to the central piston cylinder. Both the central piston cylinder and the outer piston cylinder are filled with hydraulic oil and their inner cavities are connected by a connecting pipe.

[0013] As a further improvement of this application, the spiral scraper is a strip scraper with a spiral orientation, the spiral outer wall of the spiral scraper slides against the inner wall of the filter cylinder, the spiral inner wall of the spiral scraper slides against the outer wall of the guide cylinder, and the fixed disk has a disc-shaped structure with its circumferential outer wall sliding against the inner wall of the filter cylinder.

[0014] As a further improvement of this application, the annular cylinder is fixedly connected to the end cover by bolts. There are multiple discharge holes that are distributed equidistantly on the end cover. The discharge holes are fan-shaped through slots that penetrate the end cover. The annular cylinder has an annular cavity with an opening at the right end.

[0015] As a further improvement of this application, a movable ring is nested inside the annular cylinder and slidably connected to its inner wall. The side of the movable ring away from the discharge hole is elastically connected to the inner wall of the annular cylinder through an elastic component. A sliding plate is nested in the lower part of the annular cylinder and slidably connected to it. The sliding plate is fixedly connected to the movable ring. A debris box that abuts against the lower part of the annular cylinder is slidably abutted below the sliding plate. An observation window is fixedly connected to the outer wall of the debris box.

[0016] As a further improvement of this application, the lower part of the annular cylinder is provided with an arc-shaped notch for accommodating the sliding plate, and the upper end of the debris box is provided with an opening. The inner cavity of the annular cylinder is connected to the upper opening of the debris box through the arc-shaped notch.

[0017] As a further improvement of this application, the elastic component includes a plurality of guide rods that are circumferentially distributed and fixedly connected to the inner wall of the annular cylinder. The guide rods are circular rod-shaped structures with an I-shaped cross-section, and a horizontal spring is sleeved on the guide rods to abut against the left side wall of the moving ring.

[0018] As a further improvement of this application, a draining disc is fixedly connected to the end of the central piston rod facing the through hole. When the central piston rod is inserted into the through hole, the draining disc slides against the inner wall of the through hole.

[0019] In summary, this invention integrates a guide cylinder, a filter cylinder, and a centrifugal impeller within the pump casing. The negative pressure generated by the impeller's rotation allows for negative pressure centrifugal filtration of the coolant, improving filtration efficiency. Simultaneously, debris in the coolant is trapped within the annular cavity formed by the guide cylinder and filter cylinder. A spiral scraper further cleans the inner wall of the filter cylinder, reducing debris accumulation and maintaining its long-term filtration efficiency. Furthermore, an annular cylinder fixed to the outside of the end cap and communicating with the annular cavity allows debris trapped within the annular cavity to be actively collected by the spiral scraper, eliminating the need for disassembly and cleaning of the filter cylinder. This enhances the integration and maintenance convenience of the machine tool coolant pump. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the present application;

[0021] Figure 2 This is a schematic diagram of the transverse cross-sectional structure of this application;

[0022] Figure 3 for Figure 2 A schematic diagram of the enlarged mechanism at point A;

[0023] Figure 4 This is a schematic diagram of the exploded assembly structure of this application;

[0024] Figure 5 A schematic diagram showing the flow of coolant and debris within the pump body;

[0025] Figure 6 A schematic diagram of debris collection;

[0026] Figure 7 This is a cross-sectional view of the filter cartridge in this application;

[0027] Figure 8 for Figure 7 Enlarged structural diagram at point B;

[0028] Figure 9 This is a schematic diagram of the explosive assembly of the unblocking mechanism in this application;

[0029] Figure 10 This is a schematic diagram showing the flow of coolant through the unblocking mechanism;

[0030] Figure 11 A schematic diagram showing the state of the piston rod pushing out the debris blocking the hole.

[0031] Explanation of the labels in the diagram:

[0032] 1. Base; 2. Pump casing; 3. End cover; 301. Discharge hole; 4. Inlet pipe; 5. Outlet pipe; 6. Guide cylinder; 7. Filter cylinder; 701. Filter hole; 8. Centrifugal impeller; 9. Motor; 10. Spiral scraper; 11. Fixed disc; 12. Annular cylinder; 1201. Arc-shaped notch; 13. Moving ring; 14. Guide rod; 15. Horizontal spring; 16. Sliding plate; 17. Debris box; 1701. Observation window; 18. Unblocking mechanism; 19. Mounting cylinder; 20. Sliding plug; 2001. Through hole; 21. Elastic support assembly; 22. Outer piston rod; 23. Outer piston cylinder; 24. Radial spring; 25. Connecting pipe; 26. Central piston cylinder; 27. Central piston rod; 2701. Unblocking disc; 28. Fixed rod. Detailed Implementation

[0033] The two embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0034] Implementation method 1:

[0035] Figure 1-6A machine tool cooling pump with an anti-clogging structure is shown, including a base 1, a pump housing 2 fixedly connected to the base 1, an end cap 3 fixedly connected to the left end of the pump housing 2, an inlet pipe 4 connected to the inner cavity of the pump housing 2 fixedly connected to the left end of the end cap 3, a guide cylinder 6 fixedly connected to the side wall of the end cap 3 away from the inlet pipe 4, a filter cylinder 7 fixedly connected to the end cap 3 is provided on the outside of the guide cylinder 6, filter holes 701 are evenly distributed on the circumferential side wall of the filter cylinder 7, a centrifugal impeller 8 is rotatably connected to the filter cylinder 7, the output shaft of a motor 9 is fixedly connected to the right side of the centrifugal impeller 8, the output shaft of the motor 9 drives the centrifugal impeller 8 to rotate, and an outlet pipe 5 is fixedly connected to the upper part of the pump housing 2.

[0036] Please see Figure 3 An annular cavity is formed between the guide cylinder 6 and the filter cylinder 7. A fixed disk 11 is fixedly connected to the side wall of the centrifugal impeller 8 facing the guide cylinder 6. An annular gap communicating with the annular cavity is formed between the fixed disk 11 and the guide cylinder 6. A spiral scraper 10 is nested inside the annular cavity and slides against its inner wall. The right end of the spiral scraper 10 is fixedly connected to the fixed disk 11. The machine tool coolant enters the guide cylinder 6 through the inlet pipe 4, and then enters the annular cavity through the annular gap. The coolant entering the annular cavity flows into the centrifugal impeller 8 through the filter hole 701. The motor 9 drives the centrifugal impeller 8 to rotate, and the centrifugal force generated discharges the coolant through the outlet pipe 5.

[0037] Please see Figure 3 The end cap 3 has a discharge hole 301 that communicates with the annular cavity. The annular cylinder 12 that communicates with the discharge hole 301 is fixedly connected to the side wall of the end cap 3 away from the spiral scraper 10. The centrifugal impeller 8 drives the spiral scraper 10 to rotate through the fixed disk 11. The spiral scraper 10 scrapes and cleans the inner wall of the filter cylinder 7. The debris trapped in the annular cavity by the filter cylinder 7 is pushed into the annular cylinder 12 through the discharge hole 301 for collection.

[0038] Compared to traditional cooling pumps, this invention integrates a guide cylinder 6, a filter cylinder 7, and a centrifugal impeller 8 within the pump casing 2. The negative pressure generated by the rotation of the centrifugal impeller 8 performs negative pressure centrifugal filtration of the coolant, improving filtration efficiency. Simultaneously, debris in the coolant is trapped within the annular cavity formed by the guide cylinder 6 and the filter cylinder 7. A spiral scraper 10 further cleans the inner wall of the filter cylinder 7, reducing debris accumulation on its inner surface and maintaining its long-term filtration efficiency. Furthermore, an annular cylinder 12, fixed to the outside of the end cap 3 and communicating with the annular cavity, collects the debris trapped within the annular cavity through the spiral scraper 10, enabling active debris collection without the need to disassemble and clean the filter cylinder 7. This improves the integration and maintenance convenience of the machine tool cooling pump.

[0039] Please see Figure 3 and Figure 4 The pump casing 2 is a hollow cylindrical structure. The guide cylinder 6 and the filter cylinder 7 are both cylindrical structures with openings at both ends. The centrifugal impeller 8 is a cylindrical structure with an opening on the left side, and its circumference is provided with blades that are equidistantly distributed. The outer wall of the centrifugal impeller 8 on the side away from the blades slides against the inner wall of the pump casing 2.

[0040] Specifically, when the centrifugal impeller 8 rotates outside the filter cylinder 7, the coolant in the cavity enclosed between the filter cylinder 7 and the pump casing 2 is pushed outward by the centrifugal force generated by the blades of the centrifugal impeller 8, and then discharged through the liquid outlet pipe 5, so that the cavity of the pump casing 2 located outside the filter cylinder 7 is under negative pressure, thereby producing a centrifugal negative pressure filtration effect.

[0041] Please see Figure 3 and Figure 4 The spiral scraper 10 is a strip scraper with a spiral direction. The spiral outer wall of the spiral scraper 10 slides against the inner wall of the filter cylinder 7, and the spiral inner wall of the spiral scraper 10 slides against the outer wall of the guide cylinder 6. The fixed disk 11 has a disc-shaped structure and its circumferential outer wall slides against the inner wall of the filter cylinder 7.

[0042] Specifically, when the spiral scraper 10 rotates, it spirally compresses and pushes the debris trapped in the annular cavity to achieve efficient collection of debris.

[0043] Please see Figure 3 and Figure 4 The annular cylinder 12 is fixedly connected to the end cover 3 by bolts. There are multiple discharge holes 301 distributed equidistantly on the end cover 3. The discharge holes 301 are fan-shaped through slots that penetrate the end cover 3. The annular cylinder 12 has an annular cavity with an opening at the right end.

[0044] Specifically, the debris is efficiently collected through the annular cavity inside the annular cylinder 12 and the discharge hole 301 with a fan-shaped through groove on the end cap 3.

[0045] Please see Figure 1 , Figure 3 and Figure 4 The annular cylinder 12 has a movable ring 13 that is slidably connected to its inner wall. The movable ring 13 is elastically connected to the inner wall of the annular cylinder 12 on the side away from the discharge hole 301 through an elastic component. The lower part of the annular cylinder 12 has a sliding plate 16 that is slidably connected to it. The sliding plate 16 is fixedly connected to the movable ring 13. Below the sliding plate 16, a debris box 17 that abuts against the lower part of the annular cylinder 12 is slidably connected. An observation window 1701 is fixedly connected to the outer wall of the debris box 17.

[0046] Specifically, as more and more debris enters the annular cylinder 12, the debris is continuously squeezed, and the moving ring 13 drives the sliding plate 16 to move to the left, so that the inner cavity of the annular cylinder 12 is connected to the inner cavity of the debris box 17. The debris in the annular cylinder 12 flows into the debris box 17, further increasing the amount of debris collected, extending the maintenance time, and the observation window 1701 makes it easy for operators to check the amount of debris collected and carry out timely debris cleaning and maintenance.

[0047] Please see Figure 1 , Figure 4 and Figure 6 The lower part of the annular cylinder 12 is provided with an arc-shaped notch 1201 for accommodating the sliding plate 16, and the upper end of the debris box 17 is provided with an opening. The inner cavity of the annular cylinder 12 is connected to the upper opening of the debris box 17 through the arc-shaped notch 1201.

[0048] Please see Figure 3 The elastic component includes multiple guide rods 14 that are circumferentially distributed and fixedly connected to the inner wall of the annular cylinder 12. The guide rods 14 are circular rods with an I-shaped cross section. A horizontal spring 15 is sleeved on the guide rods 14 and abuts against the left side wall of the moving ring 13.

[0049] Specifically, the guide rod 14 and the horizontal spring 15 limit and elastically compress the moving ring 13. When a large amount of debris accumulates in the annular cylinder 12 and compresses the moving ring 13, the horizontal spring 15 is compressed. After the debris is discharged into the debris box 17, the horizontal spring 15 pushes the moving ring 13 back to its initial position and drives the sliding plate 16 linked with the moving ring 13 to close the arc-shaped notch 1201 to prevent coolant from flowing out.

[0050] The second implementation method:

[0051] Figure 7-11 A machine tool cooling pump with an anti-clogging structure is shown. Based on the first embodiment, a clearing mechanism 18 is fixedly connected inside the filter hole 701. The clearing mechanism 18 includes a mounting cylinder 19 fixedly connected to the inner wall of the filter hole 701 and open at both ends. A sliding plug 20 extending into the filter cylinder 7 is slidably connected to the opening of the mounting cylinder 19 facing the inner side of the filter cylinder 7. The sliding plug 20 has a through hole 2001. The coolant in the filter cylinder 7 enters the mounting cylinder 19 through the through hole 2001 of the sliding plug 20, and then is discharged into the outside of the filter cylinder 7 through the mounting cylinder 19.

[0052] Please see Figure 8 and Figure 9A pair of elastic support assemblies 21 are fixedly connected to the outer wall of the sliding plug 20 facing the mounting cylinder 19. The outer end of the elastic support assembly 21 is fixedly connected to the fixed rod 28, and the fixed rod 28 is fixedly connected to the inner wall of the mounting cylinder 19. The elastic support assembly 21 includes an outer piston rod 22 fixedly connected to the sliding plug 20. The outer piston rod 22 is slidably connected to an outer piston cylinder 23 fixedly connected to the fixed rod 28. A radial spring 24 is provided inside the outer piston cylinder 23 that abuts against the outer piston rod 22. The elastic support assembly 21 allows the sliding plug 20 to extend from the mounting cylinder 19 into the filter cylinder 7 when it is not subjected to external force.

[0053] For details, please refer to Figure 10 When the spiral scraper 10 rotates on the inner wall of the filter cylinder 7, it squeezes the sliding plug 20 of the unblocking mechanism 18, causing the radial spring 24 to be compressed. When the spiral scraper 10 disengages from the sliding plug 20, the sliding plug 20 rebounds back into the filter cylinder 7 under the action of the radial spring 24. When a small amount of debris gets stuck in the inner through hole 2001, the reciprocating elastic movement of the sliding plug 20 causes the debris stuck in the inner through hole 2001 to disengage from the inner through hole 2001 under the action of inertia and the scraping action of the spiral scraper 10, thereby unblocking the inner through hole 2001 and improving the effect of debris scraping and cleaning.

[0054] Please see Figure 8 and Figure 9 The fixing rod 28 is fixedly connected to the central piston cylinder 26 facing the through hole 2001. The central piston cylinder 26 is slidably connected to the central piston rod 27 extending to one side of the through hole 2001. The inner cavities of the central piston cylinder 26 and the outer piston cylinder 23 are both filled with hydraulic oil and are connected by the connecting pipe 25.

[0055] For details, please refer to Figure 11 As the sliding plug 20 is squeezed and retracted into the mounting cylinder 19 by the spiral scraper 10, the sliding plug 20 drives the outer piston rod 22 to squeeze the hydraulic oil in the outer piston cylinder 23. The hydraulic oil in the outer piston cylinder 23 is injected into the central piston cylinder 26 through the connecting pipe 25. The hydraulic oil squeezes the central piston rod 27, causing the central piston rod 27 to insert into the through hole 2001, pushing out the debris stuck in the through hole 2001, and further improving the cleaning effect of the through hole 2001.

[0056] Please see Figure 8 and Figure 9 The end of the central piston rod 27 facing the through hole 2001 is fixedly connected to a drain plate 2701. When the central piston rod 27 is inserted into the through hole 2001, the drain plate 2701 slides against the inner wall of the through hole 2001.

[0057] For details, please refer to Figure 11The inner wall of the through hole 2001 is scraped and cleaned by the dredging disc 2701, which further improves the unblocking effect of the through hole 2001.

[0058] In light of current practical needs, the above-described embodiments adopted in this application are not limited to these. Any changes made within the scope of knowledge possessed by those skilled in the art without departing from the concept of this application still fall within the protection scope of this invention.

Claims

1. A machine tool cooling pump with an anti-clogging structure, characterized in that, Includes a base (1), a pump housing (2) is fixedly connected to the base (1), an end cap (3) is fixedly connected to the left end of the pump housing (2), an inlet pipe (4) communicating with the inner cavity of the pump housing (2) is fixedly connected to the left end of the end cap (3), a guide cylinder (6) is fixedly connected to the side wall of the end cap (3) away from the inlet pipe (4), a filter cylinder (7) is fixedly connected to the end cap (3) on the outside of the guide cylinder (6), a filter hole (701) is opened on the circumferential side wall of the filter cylinder (7), a centrifugal impeller (8) is rotatably connected to the filter cylinder (7) on the outside of the filter cylinder (7), an output shaft of a motor (9) is fixedly connected to the right side of the centrifugal impeller (8), and an outlet pipe (5) is fixedly connected to the upper part of the pump housing (2). An annular cavity is formed between the guide cylinder (6) and the filter cylinder (7). A fixed disk (11) is fixedly connected to the side wall of the centrifugal impeller (8) facing the guide cylinder (6). An annular gap communicating with the annular cavity is formed between the fixed disk (11) and the guide cylinder (6). A spiral scraper (10) is nested inside the annular cavity and slides against its inner wall. The right end of the spiral scraper (10) is fixedly connected to the fixed disk (11). A discharge hole (301) communicating with the annular cavity is opened on the end cover (3). An annular cylinder (12) communicating with the discharge hole (301) is fixedly connected to the side wall of the end cover (3) away from the spiral scraper (10).

2. A machine tool cooling pump with an anti-clogging structure according to claim 1, characterized in that, A clearing mechanism (18) is fixedly connected inside the filter hole (701). The clearing mechanism (18) includes an installation cylinder (19) fixedly connected to the inner wall of the filter hole (701) and open at both ends. A sliding plug (20) extending into the filter cylinder (7) is slidably connected to the opening of the installation cylinder (19) facing the inner side of the filter cylinder (7). The sliding plug (20) has a through hole (2001). The sliding plug (20) is fixedly connected to a pair of elastic support components (21) on the outer wall of the side facing the mounting cylinder (19). The outer end of the elastic support component (21) is fixedly connected to the fixed rod (28), and the fixed rod (28) is fixedly connected to the inner wall of the mounting cylinder (19). The elastic support component (21) includes an outer piston rod (22) fixedly connected to the sliding plug (20). The outer piston rod (22) is slidably connected to an outer piston cylinder (23) fixedly connected to the fixed rod (28). The outer piston cylinder (23) is provided with a radial spring (24) that abuts against the outer piston rod (22).

3. A machine tool cooling pump with an anti-clogging structure according to claim 2, characterized in that, The fixing rod (28) is fixedly connected to a central piston cylinder (26) facing the through hole (2001). The central piston cylinder (26) is slidably connected to a central piston rod (27) extending to one side of the through hole (2001). The inner cavities of the central piston cylinder (26) and the outer piston cylinder (23) are both filled with hydraulic oil and are connected by a connecting pipe (25).

4. A machine tool cooling pump with an anti-clogging structure according to claim 1, characterized in that, The spiral scraper (10) is a strip scraper with a spiral direction. The spiral outer wall of the spiral scraper (10) slides against the inner wall of the filter cylinder (7). The spiral inner wall of the spiral scraper (10) slides against the outer wall of the guide cylinder (6). The fixed disk (11) has a disc-shaped structure and its circumferential outer wall slides against the inner wall of the filter cylinder (7).

5. A machine tool cooling pump with an anti-clogging structure according to claim 1, characterized in that, The annular cylinder (12) is fixedly connected to the end cap (3) by bolts. There are multiple discharge holes (301) distributed equidistantly on the end cap (3). The discharge holes (301) are fan-shaped through slots that penetrate the end cap (3). The annular cylinder (12) has an annular cavity with an opening at the right end.

6. A machine tool cooling pump with an anti-clogging structure according to claim 5, characterized in that, The annular cylinder (12) is nested inside a movable ring (13) that is slidably connected to its inner wall. The movable ring (13) is elastically connected to the inner wall of the annular cylinder (12) on the side away from the discharge hole (301) through an elastic component. The lower part of the annular cylinder (12) is nested inside a sliding plate (16) that is slidably connected to it. The sliding plate (16) is fixedly connected to the movable ring (13). Below the sliding plate (16) is a debris box (17) that abuts against the lower part of the annular cylinder (12). An observation window (1701) is fixedly connected to the outer wall of the debris box (17).

7. A machine tool cooling pump with an anti-clogging structure according to claim 6, characterized in that, The lower part of the annular cylinder (12) is provided with an arc-shaped notch (1201) for accommodating the sliding plate (16), and the upper end of the debris box (17) is provided with an opening. The inner cavity of the annular cylinder (12) is connected to the upper opening of the debris box (17) through the arc-shaped notch (1201).

8. A machine tool cooling pump with an anti-clogging structure according to claim 6, characterized in that, The elastic component includes multiple guide rods (14) that are circumferentially distributed and fixedly connected to the inner wall of the annular cylinder (12). The guide rods (14) are circular rods with an I-shaped cross section. A horizontal spring (15) is sleeved on the guide rods (14) and abuts against the left side wall of the moving ring (13).

9. A machine tool cooling pump with an anti-clogging structure according to claim 3, characterized in that, The end of the central piston rod (27) facing the through hole (2001) is fixedly connected to a drain plate (2701). When the central piston rod (27) is inserted into the through hole (2001), the drain plate (2701) slides against the inner wall of the through hole (2001).

Images