Automatic cleaning mechanism for concentration detection probe and high-precision concentration proportioning equipment

Abstract

The utility model discloses an automatic cleaning mechanism for a concentration detection probe and high-precision concentration proportioning equipment, and belongs to the field of liquid preparation for machine tools, the high-precision concentration proportioning equipment comprises a proportioning box, the proportioning box is respectively connected with a stock solution inlet pipeline and a tap water inlet pipeline, and the proportioning box is connected with a detection loop. The detection loop is sequentially provided with a circulating pump and a concentration detection device; the concentration detection device is provided with a concentration detection probe; and the detection loop is provided with an automatic cleaning mechanism for the concentration detection probe. The automatic cleaning mechanism comprises a cleaning cavity with a four-way structure, one way is provided with a liquid inlet pipe, the other way is provided with a liquid outlet pipe, the other way is provided with a mounting pipe of a concentration detection probe, and the other way is provided with a cleaning pipe; the cleaning device is arranged in the cleaning pipe, and the cleaning device is used for washing the concentration detection probe; according to the utility model, the concentration detection probe can be cleaned and blow-dried regularly in the concentration proportioning process, so that the cleanness of the probe is ensured, the concentration detection accuracy is ensured, and the proportioning accuracy is high.

Description

Technical Field

[0001] The utility model relates to the field of liquid preparation for machine tools, in particular to the field of concentration ratio preparation for liquid for machine tools. Background Art

[0002] Traditional cutting fluid proportioning equipment mostly uses mechanical proportional pumps, which have the characteristics of fast proportioning speed, wide proportioning concentration range, and no need for power source. They are widely used in various occasions that require concentration proportioning. However, due to the unstable concentration proportioning accuracy of mechanical proportional pumps, the error can reach about 20% of the set concentration, which will cause processing companies to increase their cutting fluid usage costs and even affect the processing accuracy of workpieces. Therefore, the use of mechanical proportional pumps for cutting fluid proportioning cannot meet the use needs of processing companies, and it is urgent to solve the problem of inaccurate proportioning of cutting fluids in processing companies.

[0003] Many machine tool fluids are in the form of emulsified oils, which can contaminate the concentration sensor probe, obscure the lens, and affect the measurement accuracy of the concentration sensor. In situations where concentration detection and concentration matching are performed on machine tool fluids, many concentration sensors are built into the matching water tank. For concentration sensors built into the matching water tank, the concentration detection probe can only be removed and cleaned, which is not conducive to online concentration detection. Currently, for online concentration detection, there is a way to place the concentration sensor outside the matching water tank, but there is no way to solve the problem of oil contamination on the sensor probe. For online concentration detection and liquid matching equipment, the concentration measurement accuracy will affect the concentration matching accuracy. Summary of the invention

[0004] The high-precision concentration matching equipment provided by the utility model includes an automatic cleaning mechanism for a concentration detection probe. During the concentration matching process, the concentration detection probe is cleaned and dried at regular intervals to ensure the cleanliness of the probe and the accuracy of concentration detection. The concentration matching accuracy of the matching equipment is high.

[0005] Based on the above problems, the utility model solution is as follows:

[0006] An automatic cleaning mechanism for a concentration detection probe, the automatic cleaning mechanism comprising:

[0007] A concentration detection device having a concentration detection probe;

[0008] The cleaning cavity has a four-way structure, one of which is provided with a liquid inlet pipe, one is provided with a liquid outlet pipe, one is provided with a mounting pipe, and one is provided with a cleaning pipe;

[0009] A concentration detection probe is installed in the installation tube;

[0010] A washer is disposed in the cleaning pipe, and the washer is used to rinse the concentration detection probe;

[0011] The liquid inlet pipe is located below the cleaning cavity.

[0012] Preferably, the cleaning pipe is arranged opposite to the concentration detection probe; and the liquid inlet pipe and the liquid outlet pipe are located on both sides of the cleaning pipe.

[0013] Preferably, the cleaning pipe and the concentration detection probe have a certain inclination angle, the liquid outlet pipe is directly opposite to the concentration detection probe, and the liquid outlet pipe has a reducing pipe structure that becomes smaller toward the outlet.

[0014] Preferably, the cleaner is a high-pressure nozzle or an ejector.

[0015] The utility model also provides a high-precision concentration matching device, including a matching box, wherein the matching box is respectively connected to a raw liquid inlet pipeline and a tap water inlet pipeline, and the concentration matching device also includes a machine tool liquid supply pipeline, and is characterized in that the matching box is connected to a detection circuit, and the detection circuit is provided with a circulation pump and a concentration detection device in sequence; the concentration detection device has a concentration detection probe; and the detection circuit is provided with an automatic cleaning mechanism for the concentration detection probe.

[0016] Preferably, the circulation pump is connected to the liquid inlet pipe of the automatic cleaning mechanism, and a third valve is provided between the circulation pump and the proportioning box; a fourth valve is provided between the liquid outlet pipe of the automatic cleaning mechanism and the proportioning box.

[0017] The detection circuit has liquid inlet from the bottom and outlet from the top, which is helpful to remove the oil stains on the concentration detection probe.

[0018] Preferably, the automatic cleaning mechanism is connected to a cleaning pipeline, and the cleaning pipeline is provided with a water storage tank and a pressure pump in sequence; a float valve is arranged in the water storage tank.

[0019] By using a float valve and a pressure pump together, the water inlet to the water tank is controlled to control the flow of flushing water and ensure the flushing water volume.

[0020] Preferably, an air intake pipeline is provided between the automatic cleaning mechanism and the pressure pump, and the air intake pipeline is provided with an air intake valve.

[0021] First, the concentration detection probe is cleaned with high-pressure water, and then high-pressure gas is introduced to blow dry the cleaning cavity. The concentration detection probe is highly clean and the measurement is more accurate.

[0022] Preferably, the detection circuit is connected to the machine tool fluid supply pipeline; and the machine tool fluid supply pipe is connected to an oil gun.

[0023] Preferably, the raw liquid inlet pipeline is connected to a metering pump and a first valve in sequence; the tap water inlet pipeline is connected to a flow meter and a second valve in sequence.

[0024] Compared with the prior art, the beneficial technical effects of the utility model are:

[0025] 1. Use metering pumps and flow meters to control the volume of stock liquid or tap water for proportioning. By online detection of the concentration in the proportioning box, real-time feedback is given to the control system, and a certain volume of stock liquid and tap water are added in time for fine-tuning to ensure the accuracy of liquid proportioning.

[0026] 2. Regularly flushing the concentration detection probe can ensure the cleanliness of the probe and meet the measurement accuracy requirements. The flushing water enters the proportioning box and can also participate in concentration detection. By fine-tuning the rehydration method, the deviation caused by the flushing water will be compensated.

[0027] 3. The cleaning tube and the concentration detection probe surface have a certain inclination angle, which can reduce the impact of water on the probe, avoid damage to the probe, and facilitate the discharge of cleaning water from the liquid outlet pipe.

[0028] 4. A circulating pump is set in the detection circuit to mix and stir the mixed liquid in the proportioning box, which is conducive to uniform mixing. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a flow chart of the high-precision concentration matching equipment system of Example 1.

[0030] Figure 2 This is a schematic diagram of the structure of the high-precision concentration matching equipment in Example 1.

[0031] Figure 3 This is a cross-sectional view of the automatic cleaning mechanism for the concentration detection probe in embodiment 1.

[0032] Figure 4 This is a system flow chart of the high-precision concentration matching equipment of Example 2.

[0033] Figure 5 This is a schematic diagram of the structure of the automatic cleaning mechanism for the concentration detection probe in implementation mode 2.

[0034] Figure 6 It is a cross-sectional view of the automatic cleaning mechanism of the concentration detection probe in implementation mode 2.

[0035] In the figure: proportioning box 1, liquid level meter 11, agitator 12, raw liquid inlet pipeline 2, first valve 20, liquid inlet pump 21, flow meter 22, raw liquid barrel 23, tap water inlet pipeline 3, second valve 30, flow meter 31, tap 32, detection circuit 4, third valve 41, fourth valve 42, concentration detection device 5, concentration detection probe 50, automatic cleaning mechanism 6, liquid inlet pipe 60, liquid outlet pipe 61, cleaning pipe 62, installation pipe 63, cleaning device 64, nozzle 640, connecting seat 641, circulating pump 7, cleaning pipeline 8, pressure pump 80, water storage tank 81, float valve 810, machine tool liquid supply pipeline 9, air intake pipeline 10, air intake valve 101. DETAILED DESCRIPTION

[0036] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments:

[0037] like Figure 3 As shown, the utility model provides an automatic cleaning mechanism for the concentration detection probe. The automatic cleaning mechanism has two implementation modes:

[0038] Implementation 1:

[0039] like Figure 3 As shown, the automatic cleaning mechanism includes a cleaning cavity having a four-way structure, one of which is provided with a liquid inlet pipe 60, one is provided with a liquid outlet pipe 61, one is provided with a cleaning pipe 62, and one is provided with a mounting pipe 63 for a concentration detection probe.

[0040] like Figure 3 , the liquid inlet pipe 60 is located below the cleaning cavity. The cleaning pipe 62 is arranged opposite to the concentration detection probe, and a washer 64 is arranged in the cleaning pipe 62, and the washer is a high-pressure nozzle or an ejector. The high-pressure nozzle is provided with a nozzle 640 and a connecting seat 641, and the connecting seat 641 and the cleaning pipe 62 are connected by a quick-connect mechanism. The concentration detection device 5 has a concentration detection probe 50, and the washer 64 is opposite to the concentration detection probe to rinse the probe. The liquid inlet pipe 60 and the liquid outlet pipe 61 are respectively located on both sides of the cleaning pipe 62. In this embodiment, the liquid inlet pipe 60, the liquid outlet pipe 61 and the cleaning pipe 62 are arranged vertically. The liquid inlet pipe and the liquid outlet pipe can also be arranged at a certain angle to the cleaning pipe.

[0041] Implementation 2:

[0042] The difference from the first embodiment is that in the second embodiment, the positions of the cleaning pipe 62 and the liquid outlet pipe 61 are different.

[0043] like Figure 5 , Figure 6 As shown, the cleaning pipe 62 has a certain inclination angle with the concentration detection probe 50. In this embodiment, the inclination angle is 45 degrees. The liquid outlet pipe 61 is arranged directly opposite to the concentration detection probe, and the liquid outlet pipe 61 has a reducing pipe structure that becomes smaller toward the outlet.

[0044] like Figure 6 As shown, a washer 64 is provided in the cleaning pipe 62, and the washer is a high-pressure nozzle or an ejector. The high-pressure nozzle is provided with a nozzle 640 and a connection seat 641, and the connection seat 641 is connected to the cleaning pipe 62 by a quick connection mechanism. The cleaning pipe 62 and the concentration detection probe 50 have a certain inclination angle, and the high-pressure water is obliquely injected into the concentration detection probe for washing, which can reduce the impact force on the probe, avoid damage to the probe, and facilitate the discharge of the cleaning water from the liquid outlet pipe 61, and the washing is more thorough.

[0045] The utility model also provides a high-precision concentration ratio device, which has two embodiments.

[0046] Embodiment 1:

[0047] like Figure 1 , Figure 2 As shown, the high-precision concentration matching equipment includes a matching box 1, which is respectively connected to a raw liquid inlet pipeline 2 and a tap water inlet pipeline 3. The matching box 1 is also connected to a detection circuit 4, and the detection circuit is provided with a circulation pump 7 and a concentration detection device 5 in sequence; the concentration detection device 5 has a concentration detection probe 50, and the detection circuit is also provided with an automatic cleaning mechanism 6 for the concentration detection probe.

[0048] like Figure 1 , the stock liquid inlet pipeline 2: the stock liquid barrel 23 is connected to the liquid inlet pump 21, the flow meter 22, and the first valve 20 in sequence; the stock liquid supply pipeline can also be the stock liquid barrel 23 connected to the metering pump and the first valve 20 in sequence; the tap water inlet pipeline 3: the tap 32 is connected to the flow meter 31 and the second valve 30 in sequence. The proportioning box 1 is also provided with a liquid level meter 11 and an agitator 12. The liquid level meter 11 can be a drop-in liquid level meter. The agitator 12 is a plurality of coaxially arranged agitating blades that are driven by power and arranged outside the proportioning box 1.

[0049] The detection circuit is connected to a machine tool liquid supply pipeline 9, which is arranged between the circulation pump 7 and the proportioning box 1. The machine tool liquid supply pipeline is connected to an oil gun.

[0050] like Figure 3 The automatic cleaning mechanism 6 includes a cleaning cavity having a four-way structure, one of which is provided with a liquid inlet pipe 60, one of which is provided with a liquid outlet pipe 61, one of which is provided with a cleaning pipe 62, and one of which is provided with a mounting pipe 63 for a concentration detection probe; a cleaning device 64 is provided in the cleaning pipe 62.

[0051] like Figure 1 , Figure 2 As shown, the circulation pump 7 is connected to the liquid inlet pipe 60 of the automatic cleaning mechanism 6, a third valve 41 is provided between the circulation pump 7 and the proportioning box 1, and a fourth valve 42 is connected between the liquid outlet pipe 61 of the automatic cleaning mechanism 6 and the proportioning box 1.

[0052] like Figure 1 , the washer 64 is connected to the cleaning pipeline 8, and the cleaning pipeline 8 is provided with a water tank 81 and a pressure pump 80 in sequence, and a float valve 810 is arranged in the water tank. The cleaning pipeline 8 is connected to the tap water inlet pipeline 3. The amount of water entering the water tank 81 is controlled by the rise and fall of the float ball of the float valve. When the float ball rises to the high liquid level, the liquid inlet stops. When the concentration probe needs to be cleaned, the pressure pump 80 pumps water from the water tank 81, the liquid level in the water tank 81 drops, the float ball drops to the low liquid level, and the water tank 81 starts to enter the water. The float valve and the pressure pump are linked to control the water in and out of the water tank 81 and ensure the amount of water for flushing. The pressure pump 80 pressurizes the water and then cleans the concentration detection probe through the washer 64, so that the flushing is more thorough. The cleaned water is discharged into the proportioning box 1 through the liquid outlet pipe 61.

[0053] An intake pipe 10 is also connected between the booster pump 80 and the washer 64 , and the intake pipe is connected to an intake valve 101 .

[0054] The flow meter, metering pump, valve, booster pump, concentration detection device and liquid level meter are all electrically connected to the control system.

[0055] Working principle of high-precision concentration ratio equipment:

[0056] According to the predetermined volume and predetermined concentration, a certain volume of raw liquid and a certain volume of tap water are input into the proportioning box. The volume of raw liquid inlet is controlled by the metering pump, and the volume of tap water inlet is controlled by the flow meter. When the predetermined volume of raw liquid and tap water enter the proportioning box, they are stirred evenly by the agitator, and the mixed liquid in the proportioning box is pumped into the detection circuit. The concentration detection device detects the concentration of the mixed liquid in the proportioning box and feeds back the measured value to the control system. When the measured value is higher than the predetermined concentration, open the tap water valve and add a certain volume of tap water. When the measured value is lower than the predetermined concentration, open the metering pump and add a certain volume of raw liquid.

[0057] When the concentration sensor measurement data has a large deviation, it means that the concentration sensor lens is contaminated, which will affect the measurement accuracy. The concentration sensor probe is cleaned regularly by the automatic cleaning mechanism of the concentration detection probe. The flushed water enters the proportioning box and is stirred evenly by the agitator again, and then tested through the detection circuit. After flushing, high-pressure gas is introduced to dry the cleaning cavity. The high-pressure gas is discharged from the liquid outlet of the cleaning cavity.

[0058] After multiple measurements and by adding stock liquid and tap water, the mixed liquid in the proportioning box reaches the error range of the predetermined concentration. The mixed liquid is output to the machine tool through the liquid supply pipeline connected to the detection loop. The machine tool can also be filled with liquid through an oil gun.

[0059] The proportioning system is used to proportion the concentration of the machine tool fluid, with a high degree of automation, a proportioning concentration error of 2%, and a high proportioning accuracy.

[0060] Embodiment 2:

[0061] like Figure 4 As shown, a high-precision concentration matching device adopts the automatic cleaning mechanism of the concentration detection probe of embodiment 2, a cleaner 64 is arranged in the inclined cleaning pipe 62, the cleaner 64 is connected to the cleaning pipeline 8, and a water storage tank 81 and a pressure pump 80 are arranged on the cleaning pipeline 8 in sequence, and a float valve 810 is arranged in the water storage tank.

[0062] The cleaning pipe 62 and the concentration detection probe 50 have a certain inclination angle. The high-pressure water is injected obliquely to rinse the concentration detection probe, which can reduce the impact force on the probe and avoid damage to the probe. It is also beneficial for the cleaning water to be discharged from the liquid outlet pipe 61, making the rinsing more thorough.

[0063] The concentration probe 50 is rinsed with the cleaning water injected obliquely and discharged into the proportioning box 1 through the liquid outlet pipe 61 .

[0064] Regularly flushing the concentration detection probe can ensure the cleanliness of the probe and meet the measurement accuracy requirements. The flushing water enters the proportioning box and can also participate in concentration detection. By fine-tuning the rehydration method, the deviation caused by the flushing water will be compensated.

[0065] The above are only specific embodiments of the utility model, but the technical features of the utility model are not limited thereto. Any simple changes, equivalent replacements or modifications made based on the utility model to solve basically the same technical problems and achieve basically the same technical effects are all included in the protection scope of the utility model.

Claims

1. An automatic cleaning mechanism for a concentration detection probe, characterized in that: The automatic cleaning mechanism comprises: A concentration detection device having a concentration detection probe; The cleaning cavity has a four-way structure, one of which is provided with a liquid inlet pipe, one is provided with a liquid outlet pipe, one is provided with a mounting pipe, and one is provided with a cleaning pipe; A concentration detection probe is installed in the installation tube; A washer is disposed in the cleaning pipe, and the washer is used to rinse the concentration detection probe; The liquid inlet pipe is located below the cleaning cavity.

2. The automatic cleaning mechanism for a concentration detection probe according to claim 1, characterized in that: The cleaning pipe is arranged opposite to the concentration detection probe; the liquid inlet pipe and the liquid outlet pipe are located on both sides of the cleaning pipe.

3. The automatic cleaning mechanism for a concentration detection probe according to claim 1, characterized in that: The cleaning pipe and the concentration detection probe have a certain inclination angle, the liquid outlet pipe is directly opposite to the concentration detection probe, and the liquid outlet pipe has a reducing pipe structure that becomes smaller toward the outlet.

4. The automatic cleaning mechanism for a concentration detection probe according to claim 1, characterized in that: The cleaning device is a high-pressure nozzle or an ejector.

5. A high-precision concentration matching device, comprising a matching box, wherein the matching box is connected to a stock solution inlet pipeline and a tap water inlet pipeline respectively, and the concentration matching device also comprises a machine tool liquid supply pipeline, characterized in that: The proportioning box is connected to a detection circuit, and the detection circuit is provided with a circulation pump and a concentration detection device in sequence; the concentration detection device has a concentration detection probe; the detection circuit is provided with an automatic cleaning mechanism for the concentration detection probe according to any one of claims 1-4.

6. A high-precision concentration ratio equipment according to claim 5, characterized in that: The circulation pump is connected to the liquid inlet pipe of the automatic cleaning mechanism, and a third valve is arranged between the circulation pump and the proportioning box; a fourth valve is arranged between the liquid outlet pipe of the automatic cleaning mechanism and the proportioning box.

7. A high-precision concentration ratio equipment according to claim 5, characterized in that: The concentration proportioning equipment also includes a cleaning pipeline, the cleaning device of the automatic cleaning mechanism is connected to the cleaning pipeline, and the cleaning pipeline is provided with a water storage tank and a pressure pump in sequence; a float valve is arranged in the water storage tank.

8. A high-precision concentration ratio equipment according to claim 7, characterized in that: An air intake pipeline is provided between the automatic cleaning mechanism and the pressure pump, and the air intake pipeline is provided with an air intake valve.

9. A high-precision concentration ratio equipment according to claim 5, characterized in that: The detection circuit is connected to the machine tool liquid supply pipeline; the machine tool liquid supply pipe is connected to the oil gun.

10. A high-precision concentration ratio equipment according to claim 5, characterized in that: The raw liquid inlet pipeline is connected to a metering pump and a first valve in sequence; the tap water inlet pipeline is connected to a flow meter and a second valve in sequence.

Images