Automatic electric spark cutting fluid supplementing device

Abstract

The utility model discloses an electric spark cutting fluid automatic supplementing device which comprises a stock solution barrel, a liquid storage box is arranged on one side of the stock solution barrel, liquid level sensors are installed on the inner wall of the stock solution barrel and the inner wall of the liquid storage box, and the liquid level sensors installed on the inner wall of the stock solution barrel are located at the bottom end of the inner wall of the stock solution barrel. The number of the liquid level sensors installed on the liquid storage tank is two, a water pump is installed on the outer wall of one side of the liquid storage tank, and the input end of the water pump is connected with a water inlet pipe. Through the arrangement of the stock solution barrel, the water inlet pipe, the liquid level sensor and the water pump, the liquid level sensor in the liquid storage tank detects the liquid level of cutting fluid in the liquid storage tank, and when the liquid level of the cutting fluid in the liquid storage tank is lower than the liquid level sensor located at the bottom end of the liquid storage tank, the water pump is started to automatically supplement the cutting fluid into the liquid storage tank; the time for manually blending the cutting fluid and filling the cutting fluid into the fluid storage tank is saved, and the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of auxiliary equipment for machining centers, in particular to an automatic replenishing device for electric spark cutting fluid. Background Art

[0002] Electrospark machining mainly generates repetitive electric pulses on the tool electrode and the metal workpiece, generating discharge sparks to electro-erode the surface of the metal workpiece, thereby machining the metal workpiece; during the machining process, cutting fluid needs to be sprayed on the workpiece surface to cool and lubricate the tool.

[0003] After searching, the Chinese patent publication number CN210060025U discloses a cutting fluid feeding device for an electric spark cutting machine, in which a liquid storage tank is mounted on the inner side of a storage box, a card plate is provided above the bottom of the storage box, the side of the storage box is a box wall, a card slot is provided on the inner surface of the box wall, a heat insulation layer is mounted on the inner side of the card slot, a drying box is welded on the upper inner side of the storage box, a plurality of dehumidification holes are provided on the bottom surface of the drying box, a cover plate is installed on the top of the storage box by screws, an inlet and outlet pipe is provided in the middle of the liquid storage box, a through hole matching the inlet and outlet pipe is provided on the middle surface of the cover plate, the bottom of the inlet and outlet pipe is located at the lower inner side of the liquid storage box, the top of the inlet and outlet pipe extends out of the top of the storage box, the top of the inlet and outlet pipe is connected to a suction pipe through an elbow, and the left end of the suction pipe is connected to the liquid inlet of the low-pressure pump through a clamp a.

[0004] This patent speeds up air circulation and improves cooling efficiency by providing a cooling fan, an insulating layer and a drying box. Bags of desiccant are then placed in the drying box to dehumidify the storage box. Combined with the insulating effect of the insulating layer, this is more conducive to the long-term storage of cutting fluid in the storage tank. However, it is unable to automatically replenish cutting fluid into the storage tank and requires manual mixing and pouring into the storage tank, which is rather troublesome. Utility Model Content

[0005] The utility model aims to solve the shortcomings in the prior art and proposes an automatic replenishing device for electric spark cutting fluid.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] An automatic replenishing device for electric spark cutting fluid comprises a raw liquid barrel, a liquid storage tank is arranged on one side of the raw liquid barrel, liquid level sensors are installed on the inner walls of the raw liquid barrel and the liquid storage tank, the liquid level sensor installed on the inner wall of the raw liquid barrel is located at the bottom end of the inner wall of the raw liquid barrel, two liquid level sensors are installed on the liquid storage tank, one of the liquid level sensors is located at the top end of the inner wall of the liquid storage tank, and the other liquid level sensor is located at the bottom end of the inner wall of the liquid storage tank, a water inlet pipe is fixed to the outer wall of one side of the liquid storage tank, a water pump is installed at one end of the water inlet pipe away from the liquid storage tank, the input end of the water pump is connected to an external water source, a liquid suction pipe is fixed to the outer wall of the top surface of the raw liquid barrel, and the other end of the liquid suction pipe is connected to the water inlet pipe.

[0008] As a further solution of the utility model: a conical tube is arranged inside the water inlet pipe, the inner wall of the conical tube is a cone that gradually contracts toward the liquid storage tank, and a stirring assembly is arranged inside the liquid storage tank.

[0009] As a further solution of the utility model: a liquid outlet pipe is fixed to the bottom end of the outer wall of one side of the liquid storage box, a reflux pipe is arranged on the outer wall of the liquid storage box, and the other end of the reflux pipe is connected to the cutting fluid recovery device.

[0010] As a further solution of the utility model: the stirring assembly includes a motor and a rotating drum, the motor is fixed to the outer wall of the top surface of the liquid storage tank, the rotating drum is rotatably connected to the inner wall of the liquid storage tank, the inner wall of the rotating drum is rotatably connected to a rotating shaft, the side wall of the rotating drum is rotatably connected to a stirring rod, one end of the stirring rod is connected to a driven bevel gear 1, an active bevel gear 1 is fixed to the outer wall of the rotating shaft, and the active bevel gear 1 is drivingly meshed with the driven bevel gear 1.

[0011] As a further solution of the utility model: a driven gear is fixed to the outer wall of the top end of the rotating shaft, a gear ring is fixed to the top end of the inner wall of the rotating drum, a driving gear is connected to the output end of the motor, and the driving gear is meshed with the gear ring and the driven gear.

[0012] As a further solution of the utility model: an installation box is provided at the connecting end of the suction tube and the water inlet pipe, the installation box is communicated with the suction tube, and movable cavities are relatively opened on the inner walls of the installation box, one of the movable cavities is rotatably connected to the inner wall of a threaded rod, a driven bevel gear 2 is fixed to the outer wall of one end of the threaded rod, and a sliding rod is fixed to the inner wall of the other movable cavity.

[0013] As a further solution of the utility model: a hollow plate is provided on the inner wall of the pipette tube, one end of the hollow plate is threadedly connected to the threaded rod, and the other end of the hollow plate is slidably connected to the sliding rod; a plurality of blocking rods are fixed to the outer wall of one side of the hollow plate, and the lengths of the plurality of blocking rods are different; a sealing plate is fixed to the inner wall of the pipette tube, and a through hole corresponding to the position and size of the blocking rod is opened on the outer wall of the sealing plate.

[0014] As a further solution of the utility model: a rotating handle is rotatably connected to one side of the installation box, one end of the rotating handle is connected to a second driving bevel gear, and the second driving bevel gear is transmission-engaged with a second driven bevel gear.

[0015] Compared with the prior art, the utility model provides an automatic replenishing device for electrospark cutting fluid, which has the following beneficial effects:

[0016] 1. The utility model is provided with a raw liquid barrel, a water inlet pipe, a liquid level sensor and a water pump. The liquid level sensor inside the liquid storage tank detects the liquid level of the cutting fluid inside the liquid storage tank. When the cutting fluid level inside the liquid storage tank is lower than the liquid level sensor located at the bottom of the liquid storage tank, the water pump starts to automatically replenish the cutting fluid into the liquid storage tank, thereby saving the time of manually preparing the cutting fluid and pouring it into the liquid storage tank and improving work efficiency.

[0017] 2. The utility model is provided with a tapered tube and a liquid suction tube. When the water in the water inlet pipe flows through the tapered tube, the inner wall of the tapered tube gradually decreases, the flow rate of the water increases, and a negative pressure is formed at the connection between the water inlet pipe and the liquid suction tube, so that the raw liquid in the raw liquid barrel is sucked into the liquid storage tank together with the water, and there is no need to set a delivery pump for delivering the raw liquid, thereby saving energy.

[0018] 3. The utility model is provided with an installation box, a sealing plate, a movable cavity, a threaded rod, a hollow plate, a driven bevel gear 2, a rotating handle, an active bevel gear 2 and a blocking rod. The rotating handle is rotated to drive the active bevel gear 2 to rotate. The hollow plate is lowered along the threaded rod through the transmission of the active bevel gear 2 and the driven bevel gear 2. As the hollow plate is lowered, the blocking rod is also lowered and inserted into the through hole of the sealing plate. Due to the different lengths of the blocking rods, when the hollow plate is lowered to different heights, the number of blocking rods inserted into the sealing plate is different, thereby realizing the control of the flow rate and facilitating the adjustment of the cutting fluid ratio.

[0019] The parts not involved in the device are the same as those in the prior art or can be implemented by using the prior art. The utility model has a simple structure and is easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall structure of an automatic replenishing device for electrospark cutting fluid proposed by the utility model;

[0021] Figure 2 This is a schematic diagram of the internal structure of an automatic replenishing device for electrospark cutting fluid proposed by the utility model;

[0022] Figure 3 This is a schematic diagram of the internal structure of a rotating drum of an automatic replenishing device for electrospark cutting fluid proposed by the utility model;

[0023] Figure 4This is a schematic diagram of the transmission structure of a rotating drum and a driving gear of an automatic replenishing device for electrospark cutting fluid proposed by the utility model;

[0024] Figure 5 The utility model discloses a structural schematic diagram of an adjusting assembly of an automatic replenishing device for electrospark cutting fluid.

[0025] In the figure: 1. original liquid barrel; 2. water inlet pipe; 3. installation box; 4. liquid storage tank; 5. liquid outlet pipe; 6. reflux pipe; 7. conical pipe; 8. liquid suction pipe; 9. liquid level sensor; 10. motor; 11. rotating drum; 12. stirring rod; 13. rotating shaft; 14. driving bevel gear 1; 15. driven bevel gear 1; 16. gear ring; 17. driven gear; 18. driving gear; 19. sealing plate; 20. moving cavity; 21. threaded rod; 22. sliding rod; 23. hollow plate; 24. driven bevel gear 2; 25. rotating handle; 26. driving bevel gear 2; 27. blocking rod; 28. water pump. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0027] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0028] Example 1

[0029] An automatic replenishing device for electrospark cutting fluid, such as Figures 1 to 4As shown, it includes a raw liquid barrel 1, a liquid storage tank 4 is arranged on one side of the raw liquid barrel 1, and liquid level sensors 9 are installed on the inner walls of the raw liquid barrel 1 and the liquid storage tank 4. The liquid level sensor 9 installed on the inner wall of the raw liquid barrel 1 is located at the bottom end of the inner wall of the raw liquid barrel 1, and the liquid level sensor 9 installed on the inner wall of the raw liquid barrel 1 is electrically connected to a warning light. There are two liquid level sensors 9 installed on the liquid storage tank 4, one of which is located at the top of the inner wall of the liquid storage tank 4, and the other is located at the top of the inner wall of the liquid storage tank 4. The liquid level sensor 9 is located at the bottom end of the inner wall of the liquid storage tank 4. A water inlet pipe 2 is fixed to the outer wall of one side of the liquid storage tank 4. A water pump 28 is installed at one end of the water inlet pipe 2 away from the liquid storage tank 4. The input end of the water pump 28 is connected to an external water source. A liquid suction pipe 8 is fixed to the outer wall of the top surface of the raw liquid barrel 1. The other end of the liquid suction pipe 8 is connected to the water inlet pipe 2. A conical pipe 7 is arranged inside the water inlet pipe 2. The inner wall of the conical pipe 7 is a cone that gradually shrinks toward the liquid storage tank 4. The liquid storage tank 4 is provided with a conical pipe 7. A stirring assembly is arranged inside the box 4, and the stirring assembly includes a motor 10 and a rotating drum 11. The motor 10 is fixed to the outer wall of the top surface of the liquid storage tank 4, and the rotating drum 11 is rotatably connected to the inner wall of the liquid storage tank 4. The inner wall of the rotating drum 11 is rotatably connected to a rotating shaft 13, and the side wall of the rotating drum 11 is rotatably connected to a stirring rod 12, and one end of the stirring rod 12 is connected to a driven bevel gear 15, and an active bevel gear 14 is fixed to the outer wall of the rotating shaft 13, and the active bevel gear 14 is transmission-engaged with the driven bevel gear 15, and a driven gear 17 is fixed to the outer wall of the top end of the rotating shaft 13, and a gear ring 16 is fixed to the top of the inner wall of the rotating drum 11. The output end of the motor 10 is connected to a driving gear 18, and the driving gear 18 is transmission-engaged with the gear ring 16 and the driven gear 17, and a liquid outlet pipe 5 is fixed to the bottom end of the outer wall of one side of the liquid storage tank 4, and a reflux pipe 6 is arranged on the outer wall of the liquid storage tank 4, and the other end of the reflux pipe 6 is connected to a cutting fluid recovery device.

[0030] The raw liquid barrel 1 stores the raw cutting liquid. The liquid level sensor 9 in the liquid storage tank 4 detects the liquid level of the cutting liquid in the liquid storage tank 4. When the cutting liquid level in the liquid storage tank 4 is lower than the liquid level sensor 9 at the bottom of the liquid storage tank 4, the water pump 28 starts to pump water into the liquid storage tank 4 through the water inlet pipe 2. When the water in the water inlet pipe 2 passes through the tapered tube 7, the inner wall of the tapered tube 7 gradually decreases, and the flow rate of the water increases. A negative pressure is formed at the connection between the water inlet pipe 2 and the suction pipe 8, and the raw liquid in the raw liquid barrel 1 is pumped into the liquid storage tank 4 together with the water to replenish the cutting liquid. At the same time, the motor 10 starts to drive the driving gear 18 to rotate, and the driving gear 18 rotates with the gear ring 16 and the driven gear 17. The transmission causes the drum 11 and the shaft 13 to rotate, the drum 11 drives the stirring rod 12 to rotate horizontally, the shaft 13 drives the active bevel gear 14 to rotate, and the driving bevel gear 14 and the driven bevel gear 15 drive the drum 11 itself to rotate, and the water and the raw liquid entering the liquid storage tank 4 are stirred to make them mixed evenly. When the liquid level sensor 9 located at the top of the liquid storage tank 4 detects the liquid level inside the liquid storage tank 4, the water pump 28 and the motor 10 are turned off to stop replenishing the cutting fluid. When the liquid level sensor 9 located inside the raw liquid barrel 1 detects that the raw liquid level inside the raw liquid barrel 1 is low, the liquid level sensor 9 controls the warning light to light up, reminding the staff to replenish the raw liquid in time.

[0031] By setting the raw liquid barrel 1, the water inlet pipe 2, the liquid level sensor 9 and the water pump 28, the liquid level sensor 9 inside the liquid storage tank 4 detects the liquid level of the cutting fluid inside the liquid storage tank 4. When the cutting fluid level inside the liquid storage tank 4 is lower than the liquid level sensor 9 located at the bottom of the liquid storage tank 4, the water pump 28 starts to automatically replenish the cutting fluid into the liquid storage tank 4, saving the time of manually preparing the cutting fluid and filling the liquid storage tank 4, thereby improving work efficiency.

[0032] By providing the conical tube 7 and the liquid suction tube 8, when the water in the water inlet pipe 2 flows through the conical tube 7, the inner wall of the conical tube 7 gradually decreases, the flow rate of the water increases, and a negative pressure is formed at the connection between the water inlet pipe 2 and the liquid suction tube 8, so that the raw liquid in the raw liquid barrel 1 is sucked into the liquid storage tank 4 together with the water, without providing a delivery pump for delivering the raw liquid, thereby saving energy.

[0033] Example 2

[0034] An automatic replenishing device for electrospark cutting fluid, this embodiment is based on embodiment 1, as Figure 1 , Figure 5As shown, the connecting end of the liquid suction pipe 8 and the water inlet pipe 2 is provided with an installation box 3, the installation box 3 is communicated with the liquid suction pipe 8, and the inner wall of the installation box 3 is relatively opened with a movable cavity 20, one of the inner walls of the movable cavity 20 is rotatably connected with a threaded rod 21, and the inner wall of the other movable cavity 20 is fixed with a slide rod 22, and the inner wall of the liquid suction pipe 8 is provided with a hollow plate 23, one end of the hollow plate 23 is threadedly connected with the threaded rod 21, and the other end of the hollow plate 23 is slidably connected with the slide rod 22, and the threaded rod 21 is rotatably connected with the slide rod 22. A driven bevel gear 24 is fixed to the outer wall at one end, a rotating handle 25 is rotatably connected to one side of the installation box 3, and one end of the rotating handle 25 is connected to an active bevel gear 26, and the active bevel gear 26 is in transmission meshing with the driven bevel gear 24. A plurality of blocking rods 27 are fixed to the outer wall of one side of the hollow plate 23, and the lengths of the plurality of blocking rods 27 are different. A sealing plate 19 is fixed to the inner wall of the pipette tube 8, and a through hole corresponding to the position and size of the blocking rod 27 is opened on the outer wall of the sealing plate 19.

[0035] When adjusting the cutting fluid configuration ratio, turn the handle 25 to drive the active bevel gear 26 to rotate. Through the transmission of the active bevel gear 26 and the driven bevel gear 24, the threaded rod 21 is rotated to make the hollow plate 23 descend along the threaded rod 21. As the hollow plate 23 descends, the blocking rod 27 also descends and is inserted into the through hole of the sealing plate 19. Due to the different lengths of the blocking rods 27, when the hollow plate 23 descends to different heights, the number of blocking rods 27 inserted into the sealing plate 19 is different, thereby realizing the control of the flow rate and facilitating the adjustment of the cutting fluid configuration ratio.

[0036] By providing an installation box 3, a sealing plate 19, a moving cavity 20, a threaded rod 21, a hollow plate 23, a driven bevel gear 24, a rotating handle 25, an active bevel gear 26 and a blocking rod 27, the rotating handle 25 is rotated to drive the active bevel gear 26 to rotate, and the hollow plate 23 is descended along the threaded rod 21 through the transmission of the active bevel gear 26 and the driven bevel gear 24. As the hollow plate 23 descends, the blocking rod 27 also descends and is inserted into the through hole of the sealing plate 19. Due to the different lengths of the blocking rods 27, when the hollow plate 23 descends to different heights, the number of blocking rods 27 inserted into the sealing plate 19 is different, thereby realizing the control of the flow rate and facilitating the adjustment of the cutting fluid ratio.

[0037] Working principle: The cutting fluid is stored in the stock liquid barrel 1, and the liquid level sensor 9 in the liquid storage tank 4 detects the liquid level of the cutting fluid in the liquid storage tank 4. When the cutting fluid level in the liquid storage tank 4 is lower than the liquid level sensor 9 at the bottom of the liquid storage tank 4, the water pump 28 starts to pump water into the liquid storage tank 4 through the water inlet pipe 2. When the water in the water inlet pipe 2 passes through the tapered tube 7, the inner wall of the tapered tube 7 gradually decreases, and the flow rate of the water increases, forming a negative pressure at the connection between the water inlet pipe 2 and the suction pipe 8. The original liquid in the original liquid barrel 1 is pumped into the liquid storage tank 4 together with water to replenish the cutting fluid. At the same time, the motor 10 is started to drive the driving gear 18 to rotate. The driving gear 18, the gear ring 16 and the driven gear 17 drive the drum 11 and the shaft 13 to rotate. The drum 11 drives the stirring rod 12 to rotate horizontally. The shaft 13 drives the driving bevel gear 14 to rotate. The driving bevel gear 14 and the driven bevel gear 15 drive the drum 11 to rotate itself. The water and the stock liquid entering the liquid storage tank 4 are stirred to make them mixed evenly. When the liquid level sensor 9 located at the top of the liquid storage tank 4 detects the liquid level inside the liquid storage tank 4, the water pump 28 and the motor 10 are turned off to stop replenishing the cutting fluid. When the liquid level sensor 9 located inside the stock liquid barrel 1 detects that the stock liquid level inside the stock liquid barrel 1 is low, the liquid level sensor 9 controls the warning light to light up to remind the staff to replenish the stock liquid in time; when adjusting the cutting fluid configuration ratio, turn the rotating handle 25 to drive the active bevel gear 26 to rotate, and through the transmission of the active bevel gear 26 and the driven bevel gear 24, the threaded rod 21 is rotated to make the hollow plate 23 descend along the threaded rod 21. As the hollow plate 23 descends, the blocking rod 27 descends accordingly and is inserted into the through hole of the sealing plate 19. Due to the different lengths of the blocking rods 27, when the hollow plate 23 descends to different heights, the number of blocking rods 27 inserted into the sealing plate 19 is different, thereby realizing the control of the flow rate and facilitating the adjustment of the cutting fluid ratio.

[0038] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An automatic replenishing device for electrospark cutting fluid, comprising a stock fluid barrel (1), characterized in that: A liquid storage tank (4) is arranged on one side of the raw liquid barrel (1), and a stirring assembly is arranged inside the liquid storage tank (4). Liquid level sensors (9) are installed on the inner walls of the raw liquid barrel (1) and the liquid storage tank (4). The liquid level sensor (9) installed on the inner wall of the raw liquid barrel (1) is located at the bottom end of the inner wall of the raw liquid barrel (1). There are two liquid level sensors (9) installed on the liquid storage tank (4), one of which is located at the top end of the inner wall of the liquid storage tank (4), and the other is located at the bottom end of the inner wall of the liquid storage tank (4). An inlet pipe (2) is fixed on the outer wall of one side of the liquid storage tank (4), and a water pump (28) is installed on one end of the water inlet pipe (2) away from the liquid storage tank (4). The input end of the water pump (28) is connected to an external water source. A liquid suction pipe (8) is fixed on the outer wall of the top surface of the raw liquid barrel (1), and the other end of the liquid suction pipe (8) is connected to the water inlet pipe (2).

2. The automatic replenishing device for electrospark cutting fluid according to claim 1, characterized in that: A conical tube (7) is arranged inside the water inlet pipe (2), and the inner wall of the conical tube (7) is a cone that gradually contracts toward the liquid storage tank (4), and a stirring assembly is arranged inside the liquid storage tank (4).

3. The automatic replenishing device for electrospark cutting fluid according to claim 1, characterized in that: A liquid outlet pipe (5) is fixed to the bottom end of the outer wall of one side of the liquid storage box (4), and a return pipe (6) is arranged on the outer wall of the liquid storage box (4), and the other end of the return pipe (6) is connected to a cutting fluid recovery device.

4. The automatic replenishing device for electrospark cutting fluid according to claim 2, characterized in that: The stirring assembly comprises a motor (10) and a rotating drum (11), wherein the motor (10) is fixed to the outer wall of the top surface of the liquid storage tank (4), the rotating drum (11) is rotatably connected to the inner wall of the liquid storage tank (4), the inner wall of the rotating drum (11) is rotatably connected to a rotating shaft (13), the side wall of the rotating drum (11) is rotatably connected to a stirring rod (12), one end of the stirring rod (12) is connected to a driven bevel gear (15), the outer wall of the rotating shaft (13) is fixed to a driving bevel gear (14), and the driving bevel gear (14) is in driving meshing engagement with the driven bevel gear (15).

5. The automatic replenishing device for electrospark cutting fluid according to claim 4, characterized in that: A driven gear (17) is fixed to the outer wall of the top end of the rotating shaft (13), a gear ring (16) is fixed to the top end of the inner wall of the rotating drum (11), and a driving gear (18) is connected to the output end of the motor (10), and the driving gear (18) is in transmission meshing engagement with the gear ring (16) and the driven gear (17).

6. The automatic replenishing device for electrospark cutting fluid according to claim 1, characterized in that: A mounting box (3) is provided at the connection end of the liquid suction pipe (8) and the water inlet pipe (2), the mounting box (3) being in communication with the liquid suction pipe (8), and a movable cavity (20) is relatively opened on the inner wall of the mounting box (3), a threaded rod (21) is rotatably connected to the inner wall of one movable cavity (20), a driven bevel gear 2 (24) is fixed to the outer wall of one end of the threaded rod (21), and a sliding rod (22) is fixed to the inner wall of the other movable cavity (20).

7. The automatic replenishing device for electrospark cutting fluid according to claim 1, characterized in that: The inner wall of the pipette (8) is provided with a hollow plate (23), one end of the hollow plate (23) is threadedly connected to the threaded rod (21), and the other end of the hollow plate (23) is slidably connected to the sliding rod (22). A plurality of blocking rods (27) are fixed to the outer wall of one side of the hollow plate (23), and the lengths of the plurality of blocking rods (27) are different. A sealing plate (19) is fixed to the inner wall of the pipette (8), and the outer wall of the sealing plate (19) is provided with through holes corresponding to the position and size of the blocking rods (27).

8. The automatic replenishing device for electrospark cutting fluid according to claim 6, characterized in that: One side of the installation box (3) is rotatably connected to a rotating handle (25), one end of the rotating handle (25) is connected to a second active bevel gear (26), and the second active bevel gear (26) is in transmission meshing engagement with a second driven bevel gear (24).

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