Machine tool coolant automatic liquid supplementing device based on liquid level sensor

Abstract

The application discloses a machine tool cooling liquid automatic liquid supplementing device based on a liquid level sensor, which is applied to the technical field of machine tool cooling liquid automatic liquid supplementing and comprises a liquid supplementing mechanism and a liquid level detecting mechanism. The liquid level detecting mechanism is arranged on one side of the liquid supplementing mechanism and is connected with the liquid supplementing mechanism pipeline. The liquid supplementing mechanism comprises a machine body, a control cabinet and a four-way pipe. The control cabinet is connected with a liquid supplementing system. The liquid level detecting mechanism comprises a circulating tank, a fifth liquid supplementing pump, a liquid level sensor, a buffer assembly and a cleaning assembly. The buffer assembly and the cleaning assembly are both located in a fine filtering liquid area. The circulating tank is internally and fixedly connected with a concentration sensor. The buffer assembly comprises two groups of limiting blocks and a plurality of fan wheels. The cleaning assembly comprises a cylinder, a cleaning rod and a motor. The bottom of the cleaning rod is arranged in a semicircular shape matched with the radius of a floating ball of the liquid level sensor. The application can realize automatic and accurate control of the cooling liquid.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of machine tool cooling liquid automatic replenishment, in particular to a machine tool cooling liquid automatic replenishment device based on a liquid level sensor. BACKGROUND

[0002] As the core equipment of modern manufacturing industry, the running state of numerical control machine tools directly affects the machining precision, efficiency and production cost. During the cutting process of machine tools, cooling liquid plays a crucial role, and its main functions include cooling the tool and work, lubricating the cutting area, cleaning and removing chips, etc. If the cooling liquid level is too low, it may cause insufficient cooling, leading to increased tool wear, reduced workpiece machining quality, and even equipment failure such as cooling liquid pump burnout. Therefore, an automatic replenishment device is needed to maintain the cooling liquid level within a reasonable range to achieve stable implementation of these functions.

[0003] The existing automatic replenishment device is usually composed of a liquid level sensor, a controller, a replenishment pump and a liquid storage tank, etc. The liquid level sensor monitors the liquid level change in real time and transmits the signal to the controller. The controller controls the start and stop of the replenishment pump according to the set liquid level range, thereby realizing the automatic replenishment function. However, the commonly used liquid level sensor such as floating ball type is easily affected by impurities, oil stains or cutting debris in the cooling liquid, which may cause false positives or false negatives, reducing the reliability and accuracy of liquid level detection.

[0004] Therefore, it is necessary to provide a machine tool cooling liquid automatic replenishment device based on a liquid level sensor to solve the above problems. SUMMARY

[0005] The present application aims to provide a machine tool cooling liquid automatic replenishment device based on a liquid level sensor, which can realize automatic and accurate control of the cooling liquid, improve the stability of the cooling liquid level during machine tool operation, and solve the problems raised in the background art.

[0006] To solve the above technical problems, the present application provides the following technical solution: a machine tool cooling liquid automatic replenishment device based on a liquid level sensor, comprising a replenishment mechanism and a liquid level detection mechanism, the liquid level detection mechanism being arranged on one side of the replenishment mechanism, and the liquid level detection mechanism being connected with the replenishment mechanism pipeline;

[0007] The replenishment mechanism comprises a machine body, a control cabinet and a four-way pipe, the control cabinet is connected with a replenishment system, the replenishment system is used to obtain the liquid level, concentration of the cooling liquid during machine tool processing and the liquid level of the liquid in each tank inside the machine body, and after data analysis, the liquid level and concentration of the cooling liquid during machine tool processing are automatically adjusted;

[0008] The liquid level detection mechanism comprises a circulating tank, a fifth liquid supplementing pump, a liquid level sensor, a buffer assembly and a cleaning assembly, the buffer assembly and the cleaning assembly are located in a fine filtrate area, and the circulating tank is internally and fixedly connected with a concentration sensor.

[0009] The buffer assembly comprises two groups of limiting blocks and a plurality of fan wheels, the cleaning assembly comprises a cylinder, a cleaning rod and a motor, and the bottom of the cleaning rod is provided in a semicircular shape matching the radius of a floating ball of the liquid level sensor.

[0010] According to the technical scheme, the control cabinet is arranged on the top of the machine body, a cabinet door is arranged on the control cabinet, a man-machine interface and a display instrument are arranged on the cabinet door, and the man-machine interface and the display instrument are electrically connected with sensors in the liquid supplementing mechanism and the liquid level detection mechanism.

[0011] According to the technical scheme, the machine body is internally and side by side provided with a water tank, a mixing tank and an original liquid tank, three groups of first liquid supplementing pumps and fourth liquid supplementing pumps are fixedly connected to the top of the machine body, the first liquid supplementing pump is provided with a first inlet end and a first outlet end, the first inlet end of the first liquid supplementing pump is connected with corresponding supplementing liquid of the water tank, the mixing tank and the original liquid tank respectively, and the first outlet end of the three groups of first liquid supplementing pumps is connected with the inside of the water tank, the mixing tank and the original liquid tank respectively.

[0012] The water tank and the original liquid tank are respectively connected with the mixing tank through pipelines, the pipeline connected with the mixing tank on the water tank is provided with a second liquid supplementing pump, and the pipeline connected with the mixing tank on the original liquid tank is provided with a third liquid supplementing pump.

[0013] According to the technical scheme, the four-way pipe is provided with three second inlet ends and one second outlet end, the three second inlet ends of the four-way pipe are respectively connected with the pipelines of the water tank, the mixing tank and the original liquid tank, the second outlet end of the four-way pipe is connected with the pipeline of the fourth liquid supplementing pump, the pipeline connected with the second inlet end of the four-way pipe on the water tank is provided with a first valve, the pipeline connected with the second inlet end of the four-way pipe on the mixing tank is provided with a second valve, and the pipeline connected with the second inlet end of the four-way pipe on the original liquid tank is provided with a third valve.

[0014] According to the technical scheme, the top of the circulating tank is fixedly provided with a filtering port, a coarse filter screen is detachably arranged in the filtering port, and a fine filter screen is detachably arranged in the circulating tank, the fine filter screen divides the inside of the circulating tank into a coarse filtrate area and a fine filtrate area, the coarse filtrate area is located below the coarse filter screen, and the fine filtrate area is located on the side of the fine filter screen away from the coarse filtrate area.

[0015] The side bottom of the circulating tank is provided with a liquid inlet, the liquid inlet is located in the fine filtrate area and close to the fine filter screen, and the liquid inlet is connected with the fourth liquid supplementing pump.

[0016] According to the technical scheme, the fifth liquid supplementing pump is fixed on the top of the circulating tank, the fifth liquid supplementing pump is located above the fine filtrate area, the fifth liquid supplementing pump is provided with a third inlet end and a third outlet end, the third inlet end is located at the bottom of the fine filtrate area, and the third outlet end is connected with the pipeline of the machine tool cooling liquid conveying end.

[0017] The liquid level sensor and the concentration sensor are located in the fine filtrate area.

[0018] According to the technical scheme, the two groups of limiting blocks are respectively fixed on the top and the bottom of the circulating tank, the two groups of limiting blocks are respectively provided with a plurality of sliding grooves, the number and positions of the sliding grooves on the two groups of limiting blocks are the same, the sliding grooves are provided with sliding blocks and two groups of springs, the two groups of springs are respectively located on the two sides of the sliding blocks, one end of the two groups of springs close to the sliding blocks is fixedly connected with the sliding blocks, and the other end of the two groups of springs is fixedly connected with the limiting blocks.

[0019] A plurality of second through grooves are formed in the limiting block located on the top of the circulating tank, a first through groove is formed at the corresponding position of the top of the circulating tank, the positions and numbers of the second through grooves and the sliding grooves are corresponding, and the rotating rod sequentially passes through the first through groove, the second through groove and extends into the sliding groove.

[0020] The number of the fan wheels is the same as that of the sliding grooves on the same group of limiting blocks, and the positions of the fan wheels and the sliding grooves are corresponding, and the two ends of the fan wheels are respectively connected with the sliding block bearings on the two groups of limiting blocks.

[0021] According to the technical scheme, the circulating tank is fixedly connected with a fixed block, the cylinder is fixed on the side of the fixed block, the output end of the cylinder is fixedly connected with an abutting block, the abutting block is provided with a first magnetic member, the top of the circulating tank is fixedly connected with a fixed groove, the fixed groove is slidably provided with a clamping block, and the cleaning rod is fixed on the bottom of the clamping block.

[0022] According to the technical scheme, the circulating tank is fixedly connected with a fixed seat, the fixed seat is arranged on the periphery of the liquid level sensor, the fixed seat is rotatably connected with a rotating seat, the rotating seat is provided with a clamping groove, the clamping groove is matched with the shape and size of the clamping block, the top of the clamping block is provided with a limiting groove, the two ends of the limiting groove are open, and the top of the fixed seat is fixedly connected with a limiting protrusion.

[0023] According to the technical scheme, the motor is fixed on the top of the circulating tank, the output end of the motor is in transmission connection with the top bevel gear of the rotating seat, and the circulating tank and the fixed seat are both provided with a driving groove.

[0024] Compared with the prior art, the present application has the beneficial effects that: the present application can effectively slow down the impact of the liquid on the fine liquid area when supplementing the liquid, avoid the direct impact of the high-speed liquid flow on the liquid level sensor and the concentration sensor, protect the precision sensor, prevent the detection interference caused by the violent fluctuation of the liquid surface, improve the stability and durability of the system, and the rotation of the fan wheel can not only buffer and stir, but also drive the liquid to reverse flush the fine filter screen, effectively slow down the clogging speed of the fine filter screen, reduce the frequency of shutdown cleaning, and reduce the maintenance intensity and time cost.

[0025] By setting the cleaning assembly, the float ball of the liquid level sensor can be automatically cleaned, oil stains and debris are prevented from adhering, the long-term accuracy and reliability of the liquid level detection data are ensured, system malfunctions caused by sensor false reports are avoided, and a simple self-checking function is realized by fixing the position of the float ball when the cleaning rod is cleaning and utilizing the abnormal fluctuation of the liquid level.

[0026] By setting the liquid supplementing system, whether the liquid needs to be supplemented and the amount of the original liquid or water that needs to be supplemented can be determined according to the detected actual liquid level and concentration deviation, and the control valve is opened and closed to accurately add, so that the concentration of the cooling liquid in the processing area is always stable in the best process interval, and the processing quality and tool life are directly improved. BRIEF DESCRIPTION OF DRAWINGS

[0027] The accompanying drawings are included to provide a further understanding of the present application, and constitute a part of the specification, illustrate the present application together with the embodiments thereof, and explain the present application, and do not constitute a limitation of the present application. In the drawings:

[0028] Figure 1 is a schematic view of the overall structure of the present application;

[0029] Figure 2 is a schematic view of the rear view of the partial structure of the present application;

[0030] Figure 3 is a schematic view of the pipeline connection of the liquid supplementing mechanism of the present application;

[0031] Figure 4 is a schematic view of the cross-sectional view of the liquid level detection mechanism of the present application;

[0032] Figure 5 is a schematic view of the top view of the liquid level detection mechanism of the present application;

[0033] Figure 6 is a schematic view of the top view of the liquid level detection mechanism of the present application;

[0034] Figure 7 is a schematic view of the Figure 4 enlarged structure of area A in the present application;

[0035] Figure 8 is the technical scheme of the present application Figure 4 Schematic diagram of B area amplification structure in the present application

[0036] In the figure: 1, liquid supplement mechanism; 11, machine body; 12, control cabinet; 13, human-machine interface; 14, display instrument; 15, water tank; 16, mixing tank; 17, raw liquid tank; 18, first liquid supplement pump; 19, second liquid supplement pump; 110, third liquid supplement pump; 111, first valve; 112, second valve; 113, third valve; 114, four-way pipe; 115, fourth liquid supplement pump;

[0037] 2, liquid level detection mechanism; 21, circulating tank; 22, filter port; 23, coarse filter screen; 24, fine filter screen; 25, fifth liquid supplement pump; 26, liquid level sensor; 27, liquid inlet; 28, first through slot;

[0038] 3, buffer assembly; 31, limiting block; 32, sliding groove; 33, sliding block; 34, fan wheel; 35, spring; 36, rotating rod;

[0039] 4, cleaning assembly; 41, fixed block; 42, air cylinder; 43, fixed groove; 44, abutting block; 45, clamping block; 46, cleaning rod; 47, fixed seat; 48, rotating seat; 49, clamping groove; 410, limiting protrusion; 411, limiting groove; 412, motor; 413, driving groove. DETAILED DESCRIPTION

[0040] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0041] Please refer to Figures 1-8 The present application provides a technical solution: a machine tool cooling liquid automatic liquid supplement device based on a liquid level sensor, which comprises a liquid supplement mechanism 1 and a liquid level detection mechanism 2. The liquid level detection mechanism 2 is arranged on one side of the liquid supplement mechanism 1, and the liquid level detection mechanism 2 is connected with the liquid supplement mechanism 1 through a pipeline. The liquid level detection mechanism 2 is used for filtering the cooling liquid in the machining process of the machine tool, and detecting the liquid level and concentration of the filtered cooling liquid. The liquid supplement mechanism 1 is used for intelligently supplementing the cooling liquid and adjusting the concentration of the cooling liquid according to the detection results.

[0042] Specifically, as Figures 1-3As shown, the liquid supplementing mechanism 1 comprises a body 11, a control cabinet 12 and a four-way pipe 114, the control cabinet 12 is arranged on the top of the body 11, the control cabinet 12 is provided with a cabinet door, a man-machine interface 13 and a display instrument 14 are arranged on the cabinet door, the man-machine interface 13 is electrically connected with the display instrument 14, the liquid supplementing mechanism 1 and the sensors inside the liquid level detecting mechanism 2, the control cabinet 12 is signal connected with a liquid supplementing system, the liquid supplementing system is used for acquiring the liquid level, the concentration of the cooling liquid in the machining process of the machine tool and the liquid level of the liquid in each tank inside the body 11, after data analysis, the liquid level and the concentration of the cooling liquid in the machining process of the machine tool are automatically adjusted.

[0043] Further, the water tank 15, the mixing tank 16 and the original liquid tank 17 are arranged side by side inside the body 11, three groups of first liquid supplementing pumps 18 and fourth liquid supplementing pumps 115 are fixedly connected to the top of the body 11, the first liquid supplementing pump 18 is provided with a first inlet end and a first outlet end, the first inlet end of the first liquid supplementing pump 18 is connected with the corresponding supplementing liquid of the water tank 15, the mixing tank 16 and the original liquid tank 17 respectively, the first outlet end of the three groups of first liquid supplementing pumps 18 is connected with the inside of the water tank 15, the mixing tank 16 and the original liquid tank 17 respectively, the three groups of first liquid supplementing pumps 18 can respectively inject the corresponding supplementing liquid of the water tank 15, the mixing tank 16 and the original liquid tank 17 into the corresponding tank, and supplement the amount of the liquid inside the water tank 15, the mixing tank 16 and the original liquid tank 17.

[0044] The water tank 15 and the original liquid tank 17 are connected with the mixing tank 16 through pipelines, the second liquid supplementing pump 19 is arranged on the pipeline connecting the water tank 15 and the mixing tank 16, the third liquid supplementing pump 110 is arranged on the pipeline connecting the original liquid tank 17 and the mixing tank 16, by controlling the start-stop and flow of the second liquid supplementing pump 19 and the third liquid supplementing pump 110, the mixed liquid meeting the concentration requirement can be automatically prepared in the mixing tank 16.

[0045] It should be noted that, Figure 3 The water tank 15 is used for storing water, the mixing tank 16 is used for storing the mixed liquid of the cooling liquid and water with standard concentration, and the original liquid tank 17 is used for storing the undiluted cooling liquid, in the actual use process, the types of the liquid actually stored in the water tank 15, the mixing tank 16 and the original liquid tank 17 can be adjusted according to the actual needs.

[0046] The four-way pipe 114 is provided with three second inlet ends and one second outlet end, the three second inlet ends of the four-way pipe 114 are respectively connected with the water tank 15, the mixing tank 16 and the raw liquid tank 17, the second outlet end of the four-way pipe 114 is connected with the fourth liquid supplementing pump 115, the pipeline connecting the water tank 15 with the second inlet end of the four-way pipe 114 is provided with the first valve 111, the pipeline connecting the mixing tank 16 with the second inlet end of the four-way pipe 114 is provided with the second valve 112, the pipeline connecting the raw liquid tank 17 with the second inlet end of the four-way pipe 114 is provided with the third valve 113, the first valve 111, the second valve 112 and the third valve 113 are respectively controlled to be opened at the same time, and the fourth liquid supplementing pump 115 is started, so that the liquid in the water tank 15, the mixing tank 16 and the raw liquid tank 17 can be respectively pumped into the liquid level detection mechanism 2, and the liquid level and the concentration of the cooling liquid in the liquid level detection mechanism 2 can be adjusted.

[0047] Specifically, as shown in the figure, Figures 4-8 The liquid level detection mechanism 2 comprises a circulating tank 21, a fifth liquid supplementing pump 25, a liquid level sensor 26, a buffer assembly 3 and a cleaning assembly 4, the top of the circulating tank 21 is fixed with a filter opening 22, the filter opening 22 is detachably provided with a coarse filter screen 23, the inside of the circulating tank 21 is detachably provided with a fine filter screen 24, the fine filter screen 24 separates the inside of the circulating tank 21 into a coarse filtering liquid area and a fine filtering liquid area, the coarse filtering liquid area is below the coarse filter screen 23, and the fine filtering liquid area is on the side of the fine filter screen 24 away from the coarse filtering liquid area, the coarse filter screen 23 is used for preliminarily and coarsely filtering the cooling liquid after machining, the fine filter screen 24 is used for further and finely filtering the cooling liquid, the buffer assembly 3 and the cleaning assembly 4 are both in the fine filtering liquid area, the buffer assembly 3 is used for slowing down the flow rate of the liquid entering the inside of the liquid level detection mechanism 2 from the liquid supplementing mechanism 1, promoting the flow of the liquid in the fine filtering liquid area, and cleaning the fine filter screen 24, and the cleaning assembly 4 is used for automatically cleaning the liquid level sensor 26, so as to ensure the accuracy of the liquid level detection result of the liquid level sensor 26;

[0048] The bottom of the side of the circulating tank 21 is provided with an inlet 27, the inlet 27 is located in the fine filtering liquid area and close to the fine filter screen 24, and the inlet 27 is connected with the fourth liquid supplementing pump 115, so that the liquid in the water tank 15, the mixing tank 16 and the raw liquid tank 17 can be pumped into the fine filtering liquid area of the circulating tank 21 after the fourth liquid supplementing pump 115 is started;

[0049] The fifth liquid supplementing pump 25 is fixed to the top of the circulating tank 21, the fifth liquid supplementing pump 25 is above the fine filtering liquid area, the fifth liquid supplementing pump 25 is provided with a third inlet end and a third outlet end, the third inlet end is at the bottom of the fine filtering liquid area, and the third outlet end is connected with the pipeline of the cooling liquid conveying end of the machine tool;

[0050] The liquid level sensor 26 is fixed in the circulating tank 21, and the liquid level sensor 26 is in the fine filtering liquid area and used for detecting the liquid level of the cooling liquid in the fine filtering liquid area;

[0051] A concentration sensor is also fixedly connected inside the circulation tank 21. The concentration sensor is located in the fine filtrate zone and is used to detect the concentration of the coolant in the fine filtrate zone.

[0052] It should be noted that the concentration sensor is preferably an online refractometer with an automatic cleaning function.

[0053] Furthermore, such as Figures 4-7 As shown, the buffer assembly 3 includes two sets of limiting blocks 31 and several fan wheels 34. The two sets of limiting blocks 31 are fixed to the top and bottom of the circulation box 21 respectively. Several sliding grooves 32 are respectively provided on the two sets of limiting blocks 31. The number of sliding grooves 32 on the two sets of limiting blocks 31 is the same and their positions are corresponding. A slider 33 and two sets of springs 35 are provided inside the sliding groove 32. The two sets of springs 35 are located on both sides of the slider 33 respectively. The end of the two sets of springs 35 near the slider 33 is fixedly connected to the slider 33, and the other end of the two sets of springs 35 is fixedly connected to the limiting block 31. A rotating rod 36 is fixedly connected to the top of the fan wheel 34.

[0054] A number of second through slots are provided on the limiting block 31 located at the top of the circulation box 21. A first through slot 28 is provided at the corresponding position on the top of the circulation box 21. The positions and numbers of the second through slots correspond to those of the sliding groove 32. The rotating rod 36 passes through the first through slot 28 and the second through slot in sequence and extends into the sliding groove 32.

[0055] The number of fan wheels 34 is the same as the number of sliding grooves 32 on the same set of limit blocks 31 and their positions correspond. The two ends of the fan wheels 34 are respectively connected to the sliders 33 bearings on the two sets of limit blocks 31.

[0056] It should be noted that the fan blades of the fan wheel 34 are set in an arc shape and bend towards the liquid inlet 27.

[0057] Supplementary explanation based on the above structure: Since the inlet 27 is located in the fine filtrate area and close to the fine filter screen 24, when the fourth replenishment pump 115 starts and pumps the liquid inside the water tank 15, mixing tank 16, and original liquid tank 17 into the fine filtrate area, the liquid will impact the blades of the fan wheel 34, causing the fan wheel 34 to drive the sliders 33 at both ends to move away from the inlet 27 in the slide groove 32. The spring 35 on the side of the slider 33 close to the inlet 27 is stretched, and the spring 35 on the side of the slider 33 away from the inlet 27 is compressed, so that the spring 35 can absorb part of the impact force of the liquid.

[0058] The impact of the liquid entering the fine filtrate zone on the blades of the fan wheel 34 will also drive the fan wheel 34 to rotate, reducing the flow rate of the liquid entering the fine filtrate zone. This prevents the liquid from entering the fine filtrate zone at a high flow rate when the liquid level is low, which would impact the liquid level sensor 26 and affect its detection accuracy and service life.

[0059] Since the liquid inlet 27 is located at the bottom of the circulating tank 21, the flow of the cooling liquid at the bottom of the fine filtration zone can also be promoted. The rotation of the fan wheel 34 drives the flow of the cooling liquid in the middle and upper layers of the fine filtration zone, thereby improving the uniformity of the cooling liquid inside the fine filtration zone. In this process, the rotation of the fan wheel 34 drives the flow of the cooling liquid in the middle and upper layers of the fine filtration zone, which also performs reverse flushing on the fine filter screen 24, achieving self-cleaning of the fine filter screen 24.

[0060] When the fine filter screen 24 is clogged, the liquid pressure generated by the rapid rise of the liquid level in the fine filtration zone can also be used to reverse the fine filter screen 24, flushing the impurities accumulated in the coarse filtration zone down the fine filter screen 24, increasing the duration of the fine filtration performed by the fine filter screen 24 in a single pass, and reducing the labor intensity of the staff in frequent cleaning of the fine filter screen 24.

[0061] Further, as shown in Figure 4 、 Figure 7 and Figure 8 , the cleaning assembly 4 includes a gas cylinder 42, a cleaning rod 46, and a motor 412. The top of the circulating tank 21 is fixedly connected with a fixed block 41. The gas cylinder 42 is fixed to the side of the fixed block 41. The output end of the gas cylinder 42 is fixedly connected with an abutting block 44. The abutting block 44 is provided with a first magnetic member. The inside top of the circulating tank 21 is fixedly connected with a fixed groove 43. The inside of the fixed groove 43 is slidably provided with a clamping block 45. The cleaning rod 46 is fixed to the bottom of the clamping block 45. The bottom of the cleaning rod 46 is provided in a semicircular shape matching the radius of the float ball of the liquid level sensor 26. The first magnetic member is a magnetic member that can change magnetism or generate magnetism when electrified. The clamping block 45 is preferably made of a metal material that can be attracted by the magnetic member. A magnet can also be fixed inside the clamping block 45, so that the clamping block 45 can be attracted by the first magnetic member. When the gas cylinder 42 is activated to extend, the abutting block 44 can push the clamping block 45 to move inside the fixed groove 43 towards the side close to the liquid level sensor 26. Conversely, when the gas cylinder 42 is activated to contract, the first magnetic member generates or changes magnetism to attract the clamping block 45, so that the abutting block 44 attracts the clamping block 45 to drive the clamping block 45 to move inside the fixed groove 43 away from the liquid level sensor 26.

[0062] The inside bottom of the circulating tank 21 is fixedly connected with a fixed seat 47. The fixed seat 47 is arranged at the periphery of the liquid level sensor 26. The fixed seat 47 is rotatably connected with a rotating seat 48. The rotating seat 48 is provided with a clamping groove 49. The clamping groove 49 matches the shape and size of the clamping block 45. The top of the clamping block 45 is provided with a limiting groove 411. The two ends of the limiting groove 411 are provided in an open shape. The inside top of the fixed seat 47 is fixedly connected with a limiting protrusion 410. The limiting protrusion 410 matches the position and size of the limiting groove 411. The limiting protrusion 410 is in the form of a gap at the clamping groove 49. The limiting protrusion 410 is used to cooperate with the limiting groove 411 to limit the position of the clamping block 45, so as to prevent the clamping block 45 from falling off the rotating seat 48.

[0063] The motor 412 is fixed to the top of the circulation tank 21. The output end of the motor 412 is connected to the top bevel gear of the rotating seat 48. Both the circulation tank 21 and the fixed seat 47 are provided with drive slots 413. The drive slots 413 are located at the transmission point between the output end of the motor 412 and the top bevel gear of the rotating seat 48. When the motor 412 is started, it can drive the rotating seat 48 to rotate on the fixed seat 47 through the bevel gear transmission, thereby driving the cleaning rod 46 on the card block 45 to clean the float of the liquid level sensor 26.

[0064] Supplementary explanation based on the above structure: When the liquid level sensor 26 detects a low liquid level in the fine filtrate zone, the cylinder 42 extends, causing the stop block 44 to push the locking block 45 within the fixed groove 43 towards the side closer to the liquid level sensor 26, until the locking block 45 engages in the locking groove 49 on the rotating seat 48. At this time, the cleaning rod 46 contacts the float of the liquid level sensor 26. Then, the motor 412 starts, driving the rotating seat 48 to rotate via bevel gear transmission. The limiting protrusion 410 engages in the limiting groove 411, allowing the cleaning rod 46 to rotate and clean the liquid level sensor 26, removing any adhering substances. Simultaneously, since the semi-circular position on the cleaning rod 46 is fixed, when the cleaning rod 46 contacts the liquid level sensor 26, it can also forcibly limit the liquid level sensor 26. During this process, if the liquid level detected by the liquid level sensor 26 fluctuates significantly, the liquid level sensor 26 needs to be calibrated.

[0065] How the fluid replacement system operates:

[0066] The replenishment system monitors the liquid levels inside the water tank 15, mixing tank 16, and stock solution tank 17. When the liquid level in the mixing tank 16 is less than the set level, the replenishment system controls the second replenishment pump 19 and the third replenishment pump 110 to start, injecting the liquid from the water tank 15 and stock solution tank 17 into the mixing tank 16, ensuring that the coolant in the mixing tank 16 reaches the standard concentration requirement. In other cases, the replenishment system issues an alarm, and the operator controls the corresponding first replenishment pump 18 to start and replenish the corresponding liquid. The parameters used in the replenishment system to determine the liquid levels in the water tank 15, mixing tank 16, and stock solution tank 17 need to be manually set.

[0067] The coolant replenishment system is equipped with a standard coolant concentration range for normal machine tool operation, a coolant level range inside the circulation tank 21, a single replenishment time threshold, and a replenishment time coefficient. The coolant concentration range is denoted as... , Minimum coolant concentration, The maximum coolant concentration is denoted as the liquid level range. , This is the minimum liquid level. When this level is reached, liquid needs to be replenished. is the highest liquid level, when reaching this liquid level, stop replenishing liquid, the single replenishing liquid time threshold is T, is the maximum single replenishing liquid time allowed, is the time that the fourth replenishing pump 115 starts to replenish the cooling liquid in the circulating tank 21 from the lowest liquid level to the highest liquid level in the normal working process of the machine tool, and the cooling liquid consumption in the normal operation of the machine tool is also considered in this process, the replenishing liquid time coefficient is n, is the ratio of the time that the fourth replenishing pump 115 directly replenishes the cooling liquid in the fine filtering liquid area from the lowest liquid level to the highest liquid level when the fine filtering screen 24 is seriously blocked and the cooling liquid cannot normally flow from the coarse filtering area to the fine filtering liquid area to the normal circulating replenishing liquid time threshold.

[0068] The concentration of the fine filtering liquid area obtained by the concentration sensor of the replenishing system is recorded as The liquid level obtained by the liquid level sensor 26 is recorded as h.

[0069] When , the liquid level and the concentration of the cooling liquid in the circulating tank 21 are in a normal state, and replenishing liquid and concentration adjustment are not needed;

[0070] When , the liquid level of the cooling liquid in the circulating tank 21 is low, and the concentration of the cooling liquid is in a normal state, so replenishing liquid operation is needed, but concentration adjustment is not needed;

[0071] When , the liquid level of the cooling liquid in the circulating tank 21 is low, and the concentration of the cooling liquid in the circulating tank 21 is abnormal, so replenishing liquid and concentration adjustment are needed;

[0072] When , the liquid level of the cooling liquid in the circulating tank 21 is normal, but the concentration of the cooling liquid in the circulating tank 21 is abnormal, so only concentration adjustment is needed.

[0073] Replenishing liquid operation: control the fourth replenishing pump 115 to start, and open the second valve 112 to directly inject the cooling liquid of the standard concentration in the mixing tank 16 into the circulating tank 21.

[0074] Concentration adjustment operation: when , the concentration of the cooling liquid in the circulating tank 21 is low, and the cooling liquid needs to be replenished to improve the concentration to the standard concentration, the amount of the cooling liquid stock that needs to be replenished is calculated according to the actual concentration difference, the fourth replenishing pump 115 is controlled to start, the third valve 113 is opened, the cooling liquid stock in the stock tank 17 is injected into the circulating tank 21 to improve the concentration of the cooling liquid; when , the concentration of the cooling liquid in the circulating tank 21 is high, and water needs to be replenished to reduce the concentration to the standard concentration, the amount of water that needs to be replenished is calculated according to the actual concentration difference, the fourth replenishing pump 115 is controlled to start, the first valve 111 is opened, and the water in the water tank 15 is injected into the circulating tank 21 to reduce the concentration of the cooling liquid.

[0075] The replenishment and concentration adjustment operations are carried out simultaneously: After calculating the amount of water or coolant that needs to be replenished based on the actual concentration difference, the second valve 112, the first valve 111, or the third valve 113 are alternately controlled to replenish the coolant in the circulation tank 21 and adjust the coolant concentration.

[0076] During the replenishment and concentration adjustment process, the replenishment system records the time t during which the fourth replenishment pump 115 starts and replenishes the fine filtrate from the lowest level to the highest level.

[0077] exist This indicates that the fluid resuscitation time is normal.

[0078] exist If the replenishment time is too short, the fine filter 24 will become clogged, preventing the circulating coolant from entering the fine filter area. In this case, the replenishment will only be performed on the fine filter area of ​​the circulation tank 21, and the replenishment system will issue an alarm.

[0079] exist This is because the fluid resuscitation time is too long. This is caused by excessive coolant carried by the parts during machine tool processing. This is caused by high temperatures and excessive moisture evaporation during machine tool processing. If the leak occurs, it is caused by a leak in the circulation pipeline between the circulation tank 21 and the machine tool, and the replenishment system will issue an alarm.

[0080] The above methods enable automatic and precise control of the coolant, and determine the cause of any abnormalities in the coolant replenishment based on the replenishment status, thereby improving the stability of the coolant level during machine tool operation and ultimately enhancing the reliability of the coolant replenishment device.

[0081] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0082] Finally, it should be noted that the above only describes the preferred embodiments of the present application and is not intended to limit the present application. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art will appreciate that the technical solutions described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalent ones. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A machine tool coolant automatic liquid supplementing device based on a liquid level sensor, comprising a liquid supplementing mechanism (1) and a liquid level detecting mechanism (2), characterized in that, The liquid level detection mechanism (2) is arranged on one side of the liquid supplement mechanism (1), and the liquid level detection mechanism (2) is connected with the liquid supplement mechanism (1) pipeline; The liquid supplement mechanism (1) comprises a machine body (11), a control cabinet (12) and a four-way pipe (114), the control cabinet (12) is connected with a liquid supplement system, the liquid supplement system is used for acquiring the liquid level of the cooling liquid in the machine tool machining process, the concentration of the cooling liquid and the liquid level of the liquid in each tank in the machine body (11), and after data analysis, the liquid level and the concentration of the cooling liquid in the machine tool machining process are automatically adjusted; The liquid level detection mechanism (2) comprises a circulating tank (21), a fifth liquid supplement pump (25), a liquid level sensor (26), a buffer assembly (3) and a cleaning assembly (4), the circulating tank (21) is detachably provided with a fine filter screen (24) inside, the fine filter screen (24) separates the circulating tank (21) into a coarse filtration liquid area and a fine filtration liquid area, the buffer assembly (3) and the cleaning assembly (4) are located in the fine filtration liquid area, and the circulating tank (21) is fixedly connected with a concentration sensor inside; The buffer assembly (3) comprises two groups of limiting blocks (31) and a plurality of fan wheels (34), the two groups of limiting blocks (31) are fixed to the top and the bottom of the circulating tank (21) inside, respectively, the two groups of limiting blocks (31) are respectively provided with a plurality of sliding grooves (32) opposite to each other, the number of the sliding grooves (32) on the two groups of limiting blocks (31) is the same and the positions are corresponding, the sliding grooves (32) are provided with sliding blocks (33) and two groups of springs (35) inside, the two groups of springs (35) are located on both sides of the sliding block (33), respectively, one end of the two groups of springs (35) close to the sliding block (33) is fixedly connected with the sliding block (33), and the other end of the two groups of springs (35) is fixedly connected with the limiting block (31), and the fan wheel (34) is fixedly connected with a rotating rod (36) at the top; A plurality of second through grooves are formed in the limiting block (31) located at the top of the circulating tank (21), a first through groove (28) is formed at the corresponding position of the top of the circulating tank (21), the positions and the number of the second through grooves correspond to those of the sliding grooves (32), and the rotating rod (36) passes through the first through groove (28), the second through grooves and extends into the sliding grooves (32) in sequence; The number of the fan wheels (34) is the same as that of the sliding grooves (32) on the same group of limiting blocks (31) and the positions are corresponding, and the two ends of the fan wheel (34) are respectively connected with the sliding blocks (33) on the two groups of limiting blocks (31) through bearings. The cleaning assembly (4) comprises a cylinder (42), a cleaning rod (46) and a motor (412), the bottom of the cleaning rod (46) is provided in a semicircular shape matching the radius of the floating ball of the liquid level sensor (26), the top of the circulating tank (21) is fixedly connected with a fixed block (41), the cylinder (42) is fixed to the side of the fixed block (41), the output end of the cylinder (42) is fixedly connected with an abutting block (44), the abutting block (44) is provided with a first magnetic part, the inside top of the circulating tank (21) is fixedly connected with a fixed groove (43), the inside of the fixed groove (43) is slidably provided with a clamping block (45), and the cleaning rod (46) is fixed to the bottom of the clamping block (45). The inside bottom of the circulating tank (21) is fixedly connected with a fixed seat (47), the fixed seat (47) is arranged on the periphery of the liquid level sensor (26), the fixed seat (47) is rotatably connected with a rotating seat (48), the rotating seat (48) is provided with a clamping groove (49), the clamping groove (49) is matched with the shape and size of the clamping block (45), the top of the clamping block (45) is provided with a limiting groove (411), and the two ends of the limiting groove (411) are provided in an open shape, the inside top of the fixed seat (47) is fixedly connected with a limiting protrusion (410). The motor (412) is fixed to the top of the circulating tank (21), the output end of the motor (412) is in gear transmission connection with the top bevel gear of the rotating seat (48), and the circulating tank (21) and the fixed seat (47) are all provided with a driving groove (413), which is located at the transmission position of the output end of the motor (412) and the top bevel gear of the rotating seat (48).

2. The machine tool coolant automatic liquid supplementing device based on a liquid level sensor according to claim 1, characterized by, The control cabinet (12) is arranged on the top of the machine body (11), the control cabinet (12) is provided with a cabinet door, the cabinet door is provided with a man-machine interface (13) and a display instrument (14), and the man-machine interface (13) is electrically connected with the sensors in the display instrument (14), the liquid supplementing mechanism (1) and the liquid level detecting mechanism (2).

3. The machine tool coolant automatic liquid supplementing device based on a liquid level sensor according to claim 2, characterized by, The machine body (11) is provided with a water tank (15), a mixing tank (16) and an original liquid tank (17) side by side, three groups of first liquid supplementing pumps (18) and a fourth liquid supplementing pump (115) are fixedly connected to the top of the machine body (11), the first liquid supplementing pump (18) is provided with a first inlet end and a first outlet end, the first inlet end of the first liquid supplementing pump (18) is connected with the corresponding supplementing liquid in the water tank (15), the mixing tank (16) and the original liquid tank (17) respectively, the first outlet end of the three groups of first liquid supplementing pumps (18) is connected with the inside of the water tank (15), the mixing tank (16) and the original liquid tank (17) respectively; The water tank (15) and the original liquid tank (17) are connected with the mixing tank (16) through pipelines, the pipeline connected with the mixing tank (16) is provided with a second liquid supplementing pump (19), and the pipeline connected with the mixing tank (16) is provided with a third liquid supplementing pump (110).

4. The machine tool coolant automatic liquid supplementing device based on a liquid level sensor according to claim 3, characterized by, The four-way pipe (114) is provided with three second inlet ends and one second outlet end, the three second inlet ends of the four-way pipe (114) are respectively connected with the water tank (15), the mixing tank (16) and the stock solution tank (17), the second outlet end of the four-way pipe (114) is connected with the fourth liquid supplementing pump (115), the pipeline connected with the second inlet end of the four-way pipe (114) is provided with the first valve (111), the pipeline connected with the second inlet end of the four-way pipe (114) is provided with the second valve (112), the pipeline connected with the second inlet end of the four-way pipe (114) is provided with the third valve (113).

5. The machine tool coolant automatic liquid supplementing device based on a liquid level sensor according to claim 4, characterized by, The top of the circulating tank (21) is fixed with a filtering opening (22), a coarse filter screen (23) is detachably arranged in the filtering opening (22), the coarse filter liquid area is located below the coarse filter screen (23), and the fine filter liquid area is located on the side of the fine filter screen (24) away from the coarse filter liquid area. The bottom of the side of the circulating tank (21) is provided with a liquid inlet (27), the liquid inlet (27) is arranged in the fine filter liquid area and close to the fine filter screen (24), and the liquid inlet (27) is connected with the fourth liquid supplementing pump (115).

6. The machine tool coolant automatic liquid supplementing device based on a liquid level sensor according to claim 5, characterized by, The fifth liquid supplementing pump (25) is fixed on the top of the circulating tank (21), the fifth liquid supplementing pump (25) is located above the fine filter liquid area, the fifth liquid supplementing pump (25) is provided with a third inlet end and a third outlet end, the third inlet end is located at the bottom of the fine filter liquid area, and the third outlet end is connected with the pipeline of the machine tool cooling liquid conveying end. The liquid level sensor (26) is fixed in the circulating tank (21), and the liquid level sensor (26) and the concentration sensor are located in the fine filter liquid area.

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