Machine tool cooling pump with anti-blocking structure

Abstract

The invention relates to the field of pump body equipment, in particular to a machine tool cooling pump with an anti-blocking structure, which is characterized in that a guide cylinder, a filter cylinder and a centrifugal impeller are integrated in a pump shell, negative pressure generated by rotation of the centrifugal impeller is used for carrying out negative pressure centrifugal filtration on cooling liquid, and the filtering efficiency is improved; chippings in the cooling liquid are intercepted in an annular cavity defined by the guide cylinder and the filter cylinder, and the inner wall of the filter cylinder is scraped and cleaned in cooperation with a spiral scraper, so that accumulation of the chippings on the inner surface of the filter cylinder is reduced; besides, through an annular cylinder which is fixed to the outer side of the end cover and communicates with the annular cavity, chippings intercepted in the annular cavity are injected into the annular cylinder under the pushing action of a spiral scraper blade to be collected in a centralized mode, active collection of the chippings is achieved, a filter cylinder does not need to be disassembled and cleaned, and the integration level and maintenance convenience of the machine tool cooling pump are improved; in addition, the filtering holes are dredged through dredging mechanisms arranged in the filtering holes, and the filtering efficiency of the filtering cylinder is maintained.

Description

Technical Field

[0001] The invention relates to a machine tool cooling pump, in particular to a machine tool cooling pump with an anti-clogging structure applied in the field of pump body equipment. Background Art

[0002] The machine tool cooling pump is an indispensable part of machine tool equipment. Its structure usually includes key components such as pump body, motor, impeller and sealing device. The pump drives the impeller to rotate through the motor, thereby sucking and transporting coolant to the cutting area of ​​the machine tool, effectively taking away the large amount of heat generated during the cutting process, ensuring the stable operation of the machine tool and the quality of workpiece processing. The coolant not only plays a cooling role in the circulation process, but also can lubricate the tool and flush the chips, which is crucial to improving processing efficiency and extending the life of the machine tool.

[0003] In actual applications, in order to prevent metal debris, oil stains and other impurities in the coolant from entering the cooling pump and causing blockage or wear of the pump body, modern machine tool cooling pumps have designed a series of protective measures. Among them, the most common practice is to install an external filter cartridge or other form of slag discharge device in the system. These devices can effectively intercept and collect large particles of impurities in the coolant. At the same time, the liquid inlet of the cooling pump is also equipped with a precision filter to further prevent fine debris from entering the pump body, ensuring the purity and smoothness of the coolant.

[0004] Although these measures significantly reduce the risk of debris blocking the cooling pump, they also bring certain maintenance challenges. The external filter cartridge and filter screen need to be regularly disassembled, cleaned or replaced. This process is not only cumbersome and time-consuming, but may also cause coolant leakage due to improper operation, affecting production progress. In addition, the additional filtering and slag removal equipment also increases the overall volume of the coolant circulation cooling system, which is undoubtedly a big challenge for the limited space working environment of machine tools.

[0005] The existing patent with publication number CN215566933U discloses an anti-clogging machine tool cooling pump, and specifically discloses a filter screen and a scraper arranged in the pipeline at the liquid inlet end of the pump body. However, as the machine tool coolant is circulated, the debris on the filter screen surface cleaned by the scraper is easily accumulated on the outside of the filter screen, which greatly affects the circulation efficiency of the coolant. When the debris content in the coolant is large, the pipeline and the filter screen still need to be frequently disassembled and cleaned. Summary of the invention

[0006] In view of the above-mentioned prior art, the technical problem to be solved by the present invention 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] In order to solve the above problems, the present invention provides a machine tool cooling pump with an anti-clogging structure, comprising a base, a pump casing is fixedly connected to the base, an end cover is fixedly connected to the left end of the pump casing, a liquid inlet pipe connected to the inner cavity of the pump casing is fixedly connected to the left end of the end cover, a guide cylinder is fixedly connected to the side wall of the end cover away from the liquid inlet pipe, a filter cylinder fixedly connected to the end cover is arranged on the outer side of the guide cylinder, filter holes evenly distributed are opened on the circumferential side wall of the filter cylinder, a centrifugal impeller rotatably connected to the filter cylinder is sleeved on the outer side of the filter cylinder, an output shaft of a motor is fixedly connected to the right side of the centrifugal impeller, and a liquid outlet pipe is fixedly connected to the upper part of the pump casing;

[0008] An annular cavity is formed between the guide cylinder and the filter cylinder, a fixed disk is fixedly connected to the side wall of the centrifugal impeller facing the guide cylinder, an annular gap connected to the annular cavity is formed between the fixed disk and the guide cylinder, a spiral scraper is nested in the annular cavity and slidably abuts against the inner wall of the annular cavity, and the right end of the spiral scraper is fixedly connected to the fixed disk; a discharge hole connected to the annular cavity is opened on the end cover, and an annular cylinder connected to the discharge hole is fixedly connected to the side wall of the end cover away from the spiral scraper.

[0009] In the above-mentioned machine tool cooling pump with anti-clogging structure, the cooling pump filter cartridge can be cleaned without disassembly by enclosing the guide cartridge and the filter cartridge to form an annular cavity and by the spiral scraper arranged in the annular cavity.

[0010] As a further improvement of the present application, a dredging mechanism is fixedly connected in the filter hole, and the dredging mechanism includes a mounting cylinder fixedly connected to the inner wall of the filter hole and having openings at both ends, and a sliding plug extending into the filter cylinder is slidably connected in the opening of the mounting cylinder toward the inner side of the filter cylinder, and the sliding plug is provided with a through hole;

[0011] A pair of elastic support components are fixedly connected to the outer wall of the sliding plug on the side facing the mounting cylinder, the outer ends of the elastic support components are fixedly connected to the fixing rod, and the fixing rod is fixedly connected to the inner wall of the mounting cylinder; the elastic support component 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 fixing rod, and a radial spring is provided in the outer piston cylinder that abuts the outer piston rod.

[0012] As a further improvement of the present application, the fixed rod is fixedly connected to a central piston cylinder facing the through hole, and the central piston cylinder is slidably connected to a central piston rod extending to one side of the through hole. The inner cavities of the central piston cylinder and the outer piston cylinder are both filled with hydraulic oil and the inner cavities of the two are connected by a connecting pipe.

[0013] As a further improvement of the present application, the spiral scraper is a strip scraper with a spiral direction, 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 plate is a disc-shaped structure and the circumferential outer wall slides against the inner wall of the filter cylinder.

[0014] As a further improvement of the present application, the annular cylinder is fixedly connected to the end cover by bolts, the number of discharge holes is multiple and equidistantly distributed on the end cover, the discharge holes are fan-shaped through grooves passing through the end cover, and the annular cylinder is provided with an annular cavity with an opening at the right end.

[0015] As a further improvement of the present application, a movable ring is nested in the annular cylinder and is slidably connected to the inner wall thereof. 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 is slidably connected to the annular cylinder. The sliding plate is fixedly connected to the movable ring. A debris box is slidably abutted against the lower part of the annular cylinder below the sliding plate, and an observation window is fixedly connected to the outer wall of the debris box.

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

[0017] As a further improvement of the present application, the elastic component includes a plurality of guide rods equidistantly distributed around the circumference and fixedly connected to the inner wall of the annular cylinder. The guide rods are round rod structures with an I-shaped cross-section. A horizontal spring is sleeved on the guide rods and abuts against the left side wall of the movable ring.

[0018] As a further improvement of the present application, a clearing disk 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 clearing disk slides and abuts against the inner wall of the through hole.

[0019] To summarize, the present invention integrates the guide cylinder, filter cylinder and centrifugal impeller in the pump casing, and utilizes the negative pressure generated by the rotation of the centrifugal impeller to perform negative pressure centrifugal filtration on the coolant, thereby improving the filtration efficiency. At the same time, debris in the coolant is trapped in the annular cavity formed by the guide cylinder and the filter cylinder, and the inner wall of the filter cylinder is scraped and cleaned in cooperation with the spiral scraper, thereby reducing the accumulation of debris on the inner surface of the filter cylinder and maintaining the long-term filtration efficiency of the filter cylinder. In addition, through the annular cylinder fixed to the outside of the end cover and connected to the annular cavity, the debris trapped in the annular cavity is injected into the annular cylinder under the push of the spiral scraper for centralized collection, thereby realizing active collection of debris, without the need to disassemble and clean the filter cylinder, thereby improving the integration and maintenance convenience of the machine tool cooling pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic diagram of the three-dimensional structure of this application;

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

[0022] Figure 3 for Figure 2 Schematic diagram of the amplification mechanism at A in the middle;

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

[0024] Figure 5 It is a schematic diagram of the flow of coolant and debris in the pump body;

[0025] Figure 6 Schematic diagram of debris collection;

[0026] Figure 7 It is a schematic diagram of the cross-sectional structure of the filter cartridge in this application;

[0027] Figure 8 for Figure 7 A schematic diagram of the enlarged structure at B in the middle;

[0028] Fig. 9 It is a schematic diagram of the explosion assembly of the dredging mechanism in this application;

[0029] Fig.10 A schematic diagram of the state of coolant flowing through the dredging mechanism;

[0030] Fig.11 This is a schematic diagram of the state in which the central piston rod pushes out the hole-blocking debris.

[0031] Description of the numbers in the figure:

[0032] 1. Base; 2. Pump casing; 3. End cover; 301. Discharge hole; 4. Liquid inlet pipe; 5. Liquid outlet pipe; 6. Guide cylinder; 7. Filter cylinder; 701. Filter hole; 8. Centrifugal impeller; 9. Motor; 10. Spiral scraper; 11. Fixed disk; 12. Annular cylinder; 1201. Arc notch; 13. Moving ring; 14. Guide rod; 15. Horizontal spring; 16. Sliding plate; 17. Debris box; 1701. Observation window; 18. Dredging 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. Center piston cylinder; 27. Center piston rod; 2701. Dredging disk; 28. Fixed rod. DETAILED DESCRIPTION

[0033] Two implementation modes of the present application are described in detail below with reference to the accompanying drawings.

[0034] The first implementation method:

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

[0036] See also 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 in the annular cavity and slidably abuts against the inner wall thereof. 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 liquid 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 liquid outlet pipe 5.

[0037] See also Figure 3 A discharge hole 301 communicating with the annular cavity is provided on the end cover 3, and 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. The centrifugal impeller 8 drives the spiral scraper 10 to rotate through the fixed plate 11, and the spiral scraper 10 scrapes and cleans the inner wall of the filter cylinder 7, and pushes the debris trapped in the annular cavity by the filter cylinder 7 into the annular cylinder 12 through the discharge hole 301 for collection.

[0038] Compared with the traditional cooling pump, the present invention integrates the guide cylinder 6, filter cylinder 7 and centrifugal impeller 8 in the pump housing 2, and utilizes the negative pressure generated by the rotation of the centrifugal impeller 8 to perform negative pressure centrifugal filtration on the coolant, thereby improving the filtration efficiency. At the same time, the debris in the coolant is trapped in the annular cavity formed by the guide cylinder 6 and the filter cylinder 7, and the inner wall of the filter cylinder 7 is scraped and cleaned in cooperation with the spiral scraper 10, thereby reducing the accumulation of debris on the inner surface of the filter cylinder 7 and maintaining the long-term filtration efficiency of the filter cylinder 7; in addition, through the annular cylinder 12 fixed on the outside of the end cover 3 and connected to the annular cavity, the debris trapped in the annular cavity is injected into the annular cylinder 12 under the push of the spiral scraper 10 for centralized collection, thereby realizing active collection of debris, without the need to disassemble and clean the filter cylinder 7, thereby improving the integration and maintenance convenience of the machine tool cooling pump.

[0039] See also 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 circumferential position is provided with blades distributed equidistantly around the circumference, and the outer wall of the centrifugal impeller 8 away from the blades is in sliding contact with the inner wall of the pump casing 2.

[0040] Specifically, when the centrifugal impeller 8 rotates outside the filter cartridge 7, the coolant in the cavity enclosed between the filter cartridge 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 cartridge 7 is under negative pressure, thereby generating a centrifugal negative pressure filtration effect.

[0041] See also 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. The spiral inner wall of the spiral scraper 10 slides against the outer wall of the guide cylinder 6. The fixed plate 11 is a disc-shaped structure and the circumferential outer wall slides against the inner wall of the filter cylinder 7.

[0042] Specifically, when the spiral scraper 10 rotates, the debris trapped in the annular cavity is spirally squeezed and pushed, thereby achieving efficient collection of the debris.

[0043] See See Figure 3 and Figure 4 The annular cylinder 12 is fixedly connected to the end cover 3 by bolts. The number of discharge holes 301 is multiple and they are equidistantly distributed on the end cover 3. The discharge holes 301 are fan-shaped through grooves that penetrate the end cover 3. The annular cylinder 12 is provided with an annular cavity with an opening at the right end.

[0044] Specifically, the debris is efficiently collected through the annular cavity provided in the annular cylinder 12 and the discharge hole 301 in the form of a fan-shaped through groove provided on the end cover 3 .

[0045] See also Figure 1 , Figure 3 and Figure 4 A moving ring 13 is nested in the annular cylinder 12 and is slidably connected to the inner wall thereof. The side of the moving ring 13 away from the discharge hole 301 is elastically connected to the inner wall of the annular cylinder 12 through an elastic component. A sliding plate 16 is nested in the lower part of the annular cylinder 12 and is slidably connected to the annular cylinder 12. The sliding plate 16 is fixedly connected to the moving ring 13. A debris box 17 is slidably abutted against the lower part of the annular cylinder 12 below the sliding plate 16. An observation window 1701 is fixedly connected to the outer wall of the debris box 17.

[0046] Specifically, as the amount of debris entering the annular cylinder 12 gradually increases, the debris is continuously squeezed, and the movable ring 13 drives the sliding plate 16 to move to the left, so that the inner cavity of the annular cylinder 12 is connected with the inner cavity of the debris box 17, and 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 making it easy for the operator to check the amount of debris collected through the observation window 1701, so as to perform timely debris cleaning and maintenance.

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

[0048] See also Figure 3 The elastic component includes a plurality of guide rods 14 which are equidistantly distributed around the circumference and fixedly connected to the inner wall of the annular tube 12 . The guide rods 14 are round rod structures with an I-shaped cross section. A horizontal spring 15 which abuts against the left side wall of the moving ring 13 is sleeved on the guide rods 14 .

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

[0050] 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 dredging mechanism 18 is fixedly connected in the filter hole 701. The dredging mechanism 18 includes a mounting cylinder 19 fixedly connected to the inner wall of the filter hole 701 and opened at both ends. The mounting cylinder 19 is slidably connected to the opening inside the filter cylinder 7 with a sliding plug 20 extending into the filter cylinder 7. The sliding plug 20 is provided with 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 to the outside of the filter cylinder 7 through the mounting cylinder 19.

[0052] See also Figure 8 and Fig. 9A pair of elastic support components 21 are fixedly connected to the outer wall of the sliding plug 20 on the side facing the mounting cylinder 19, the outer end of the elastic support component 21 is fixedly connected to the fixing rod 28, and the fixing 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 fixing rod 28, and a radial spring 24 abutting against the outer piston rod 22 is provided in the outer piston cylinder 23. The elastic support component 21 enables the sliding plug 20 to extend from the mounting cylinder 19 to the filter cylinder 7 when not subjected to external force.

[0053] For details, please refer to Fig.10 When the spiral scraper 10 rotates on the inner wall of the filter cartridge 7, the spiral scraper 10 squeezes the sliding plug 20 of the dredging mechanism 18, so that the radial spring 24 is compressed. When the spiral scraper 10 disengages from the sliding plug 20, the sliding plug 20 rebounds back into the filter cartridge 7 under the action of the radial spring 24. When a small amount of debris is stuck in the inner through hole 2001, with the reciprocating elastic movement of the sliding plug 20, the debris stuck in the inner through hole 2001 is separated from the inner through hole 2001 under the action of inertia and the scraping action of the spiral scraper 10, thereby achieving dredging of the inner through hole 2001 and improving the effect of debris scraping and cleaning.

[0054] See also Figure 8 and Fig. 9 The fixed rod 28 is fixedly connected to the central piston cylinder 26 facing the through hole 2001, and 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 the inner cavities of the two are connected through a connecting pipe 25.

[0055] For details, please refer to Fig.11 When the sliding plug 20 is squeezed by the spiral scraper 10 and shrinks into the mounting cylinder 19, 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, so that the central piston rod 27 is inserted into the through hole 2001, and the debris blocks stuck in the through hole 2001 are pushed out, further improving the cleaning effect of the through hole 2001.

[0056] See also Figure 8 and Fig. 9 The end of the central piston rod 27 facing the through hole 2001 is fixedly connected with a dredging disk 2701. When the central piston rod 27 is inserted into the through hole 2001, the dredging disk 2701 slides and abuts against the inner wall of the through hole 2001.

[0057] For details, please refer to Fig.11The inner wall of the through hole 2001 is scraped and cleaned by the dredging disk 2701 to further improve the dredging effect of the through hole 2001.

[0058] In view of current practical needs, the above-mentioned implementation mode adopted in this application is not limited to the scope of protection. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the scope of protection of the present invention.

Claims

1. A machine tool cooling pump with an anti-clogging structure, characterized in that: The invention comprises a base (1), a pump casing (2) is fixedly connected to the base (1), an end cover (3) is fixedly connected to the left end of the pump casing (2), a liquid inlet pipe (4) connected to the inner cavity of the pump casing (2) is fixedly connected to the left end of the end cover (3), a guide cylinder (6) is fixedly connected to the side wall of the end cover (3) away from the liquid inlet pipe (4), a filter cylinder (7) fixedly connected to the end cover (3) is arranged on the outer side of the guide cylinder (6), filter holes (701) distributed evenly are arranged on the circumferential side wall of the filter cylinder (7), a centrifugal impeller (8) rotatably connected to the filter cylinder (7) is sleeved on the outer side 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 a liquid outlet pipe (5) is fixedly connected to the upper part of the pump casing (2); An annular cavity is enclosed 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 in communication with the annular cavity is enclosed between the fixed disk (11) and the guide cylinder (6); a spiral scraper (10) is nested in the annular cavity and is in sliding contact with the inner wall of the annular cavity; the right end of the spiral scraper (10) is fixedly connected to the fixed disk (11); a discharge hole (301) in communication with the annular cavity is provided on the end cover (3); an annular cylinder (12) in communication 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 dredging mechanism (18) is fixedly connected inside the filter hole (701), and the dredging mechanism (18) comprises a mounting tube (19) fixedly connected to the inner wall of the filter hole (701) and having openings at both ends, and a sliding plug (20) extending into the filter cylinder (7) is slidably connected to the opening of the mounting tube (19) toward the inner side of the filter cylinder (7), and the sliding plug (20) is provided with a through hole (2001); A pair of elastic support components (21) are fixedly connected to the outer wall of the sliding plug (20) on the side facing the mounting cylinder (19); the outer ends of the elastic support components (21) are fixedly connected to the fixing rod (28); the fixing rod (28) is fixedly connected to the inner wall of the mounting cylinder (19); the elastic support components (21) include 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 fixing rod (28); a radial spring (24) is provided in the outer piston cylinder (23) and 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 fixed rod (28) is fixedly connected to a central piston cylinder (26) facing the through hole (2001), and 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 the inner cavities of the two are connected through 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-shaped scraper with a spiral orientation. The spiral outer wall of the spiral scraper (10) is in sliding contact with the inner wall of the filter cylinder (7). The spiral inner wall of the spiral scraper (10) is in sliding contact with the outer wall of the guide cylinder (6). The fixed disk (11) is a disk-shaped structure and its circumferential outer wall is in sliding contact with the inner wall of the filter cylinder (7).

5. The 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 cover (3) by means of bolts. The number of discharge holes (301) is multiple and equidistantly distributed on the end cover (3). The discharge holes (301) are fan-shaped through grooves penetrating the end cover (3). The annular cylinder (12) is provided with 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: A movable ring (13) is nested in the annular cylinder (12) and is slidably connected to the inner wall thereof. The movable ring (13) is elastically connected to the inner wall of the annular cylinder (12) via an elastic component on the side away from the discharge hole (301). A sliding plate (16) is nested in the lower part of the annular cylinder (12) and is slidably connected to the inner wall thereof. The sliding plate (16) is fixedly connected to the movable ring (13). A debris box (17) is slidably abutted against the lower part of the annular cylinder (12) below the sliding plate (16). 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), the upper end of the debris box (17) is provided with an opening, and the inner cavity of the annular cylinder (12) is connected to the upper end opening of the debris box (17) through the arc-shaped notch (1201).

8. The machine tool cooling pump with an anti-clogging structure according to claim 6, characterized in that: The elastic component comprises a plurality of guide rods (14) which are equidistantly distributed around the circumference and fixedly connected to the inner wall of the annular cylinder (12); the guide rods (14) are round rod structures with an I-shaped cross section; and a horizontal spring (15) which abuts against the left side wall of the moving ring (13) is sleeved on the guide rods (14).

9. The 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 with a dredging disk (2701). When the central piston rod (27) is inserted into the through hole (2001), the dredging disk (2701) slides and abuts against the inner wall of the through hole (2001).

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