CN107790445B - Automatic cleaning instrument for capillary viscosimeter - Google Patents
Automatic cleaning instrument for capillary viscosimeter Download PDFInfo
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- CN107790445B CN107790445B CN201710912068.0A CN201710912068A CN107790445B CN 107790445 B CN107790445 B CN 107790445B CN 201710912068 A CN201710912068 A CN 201710912068A CN 107790445 B CN107790445 B CN 107790445B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
- B08B9/027—Cleaning the internal surfaces; Removal of blockages
- B08B9/032—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing
- B08B9/0321—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing using pressurised, pulsating or purging fluid
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/04—Cleaning involving contact with liquid
- B08B3/08—Cleaning involving contact with liquid the liquid having chemical or dissolving effect
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/04—Cleaning involving contact with liquid
- B08B3/10—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration
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- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Cleaning By Liquid Or Steam (AREA)
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Abstract
A capillary viscometer self-cleaning appearance, it includes: the device comprises a liquid storage device for containing a cleaning solvent, a joint for connecting each pipe orifice of a capillary viscometer, a collecting device for collecting waste liquid, a vacuumizing device and a multi-way electromagnetic valve, wherein one joint is respectively connected with the liquid storage device and the collecting device through pipelines; the other joints are connected with a collecting device through pipelines; the collecting device is connected with the vacuumizing device; the multi-way electromagnetic valve is arranged on the connecting pipeline and is respectively used for controlling the liquid storage device to inject solvent into the viscometer to be washed, the collection device to be communicated with the joints in a switching mode, each joint only connected with the collection device to be communicated with the collection device or the external air circuit connected with the electromagnetic valve in a switching mode, and the hovering, soaking and repeated oscillation of the solvent in each pipe of the viscometer are achieved through control over the electromagnetic valve.
Description
Technical Field
The invention relates to a cleaning device, in particular to an automatic cleaning instrument for a capillary viscometer, which is used for automatically cleaning a viscometer for measuring the kinematic viscosity of a common liquid or petroleum product.
Background
In the field of petrochemical industry, a capillary viscometer is a common instrument for measuring kinematic viscosity of petroleum products. Any viscometer, after the measurement of one sample is completed, must be cleaned before the next sample can be tested. At present, the main cleaning mode is still manual cleaning. The manual cleaning is to drop or suck the solvent which can easily dissolve the sample to be tested into the viscometer by using a dropper to wash the solvent back and forth, then pour the solvent out, and repeat the process until no obvious dirt exists. When the requirement is not high, the cleaning is carried out for several times by using one or two solvents. When the requirement is high, the cleaning agent is required to be used for cleaning, for example, for the benchmark and standard capillary viscometer for measuring petroleum products, the cleaning agent is required to be used for cleaning with gasoline, alcohol (or other organic solvents) and tap water for multiple times respectively, then the cleaning agent is used for soaking for several hours with chromic acid cleaning solution, and then the cleaning agent is used for repeatedly washing with tap water and distilled water.
In oil refineries and oil fields with large measuring workload, dozens or even hundreds of viscosimeters are needed to be used for experiments every day, a large amount of manpower and time are consumed in the cleaning process, the working efficiency is low, the labor intensity is high, the consumption of the cleaning agent is large, and the cleaning effect is poor. With the rapid development of the electronic industry and the increased demand for automation, users often want to clean the instruments automatically and achieve the desired cleaning effect. Therefore, it is necessary to design an automatic cleaning device for capillary viscometer to realize the automatic cleaning of capillary viscometer.
Disclosure of Invention
Therefore, the invention provides the automatic cleaning instrument for the capillary viscometer, the cleaning instrument can carry out full-automatic cleaning on the viscometer, hovering soaking and oscillating cleaning of a cleaning agent at each position of the viscometer are realized, the labor cost of manpower is reduced, the working efficiency is improved, the problem of unclean cleaning in the existing method is solved more effectively through repeated hovering soaking and oscillating, and an ideal cleaning effect can be achieved.
The invention discloses an automatic cleaning instrument for a capillary viscometer, which comprises the following components:
a liquid storage device for containing a cleaning solvent,
a joint for connecting the pipe orifices of the capillary viscometer,
a collecting device for collecting the waste liquid,
a vacuum-pumping device is arranged on the vacuum-pumping device,
a multi-way electromagnetic valve is arranged on the upper portion of the main body,
one of the joints is respectively connected with the liquid storage device and the collecting device through pipelines; the other joints are connected with a collecting device through pipelines;
the collecting device is connected with the vacuumizing device;
the multi-way electromagnetic valve is arranged on the connecting pipeline and is respectively used for controlling: injecting a solvent into the viscometer to be washed by the liquid storage device; different joints are communicated with the pipeline in a switching way; each joint is communicated with a liquid path communicated with the collecting device or an external gas path accessed through an electromagnetic valve in a switching way; when a certain joint is communicated with a liquid path on a pipeline and a vacuumizing device enables the inside of the pipe connected with the joint to generate enough negative pressure, the vacuum pipe is used for closing the pipeline and keeping the negative pressure inside the pipe; and the suspension soaking and the repeated oscillation of the solvent in each pipe of the viscometer are realized through controlling the electromagnetic valve. Preferably, the external air passage is communicated with air.
Wherein, the stock solution device can be 2 or a plurality of stock solution bottles or the liquid storage pot that the parallel arrangement set up, can be used to the different cleaning solvent of splendid attire, and sets up two way solenoid valve on each parallelly connected branch road to the stock solution device of control different cleaning solvent goes out the liquid, flows into each pipe of the viscometer of waiting to wash. Preferably, the liquid storage device only has an air inlet function after storing the solvent, for example, the liquid storage device is sealed by an upper cover with an air inlet one-way valve, so as to avoid the air from being enriched with volatile cleaning solvent gas phase, thereby meeting the use requirement of the corresponding solvent.
The connector may be any known quick-connect connector, such as a pagoda connector. One of the joints is simultaneously connected with the liquid storage device and the collecting device, and the other joints are only connected with the collecting device. Preferably, there are 3A, B, C adapters for insertion into the three ports of a capillary viscometer, respectively. The joint A is connected with a main liquid outlet pipeline of the liquid storage device and is connected with a liquid inlet pipeline of the collecting device through a three-way electromagnetic valve and a two-way electromagnetic valve which are sequentially connected in series; and the joint B, C is connected with a liquid inlet pipeline of the collecting device through a three-way electromagnetic valve, a two-way electromagnetic valve and a three-way electromagnetic valve which are connected in series in sequence.
Preferably, two groups of electromagnetic valves connected in parallel are arranged between the joint and the collecting device, the first group comprises a third electromagnetic valve 3 and a fourth electromagnetic valve 4 which are sequentially connected in series, the second group comprises a fifth electromagnetic valve 5, a sixth electromagnetic valve 5, a seventh electromagnetic valve 6 and a seventh electromagnetic valve 7 which are sequentially connected in series, the first group of electromagnetic valves is arranged on a connecting pipeline of the joint A and the collecting device, the second group of electromagnetic valves is arranged on a connecting pipeline of the joint B, C and the collecting device, the third electromagnetic valve 3, the fifth electromagnetic valve 5 and the sixth electromagnetic valve 6 are three-way electromagnetic valves, the fourth electromagnetic valve and the seventh electromagnetic valve are two-way electromagnetic valves, the third electromagnetic valve and the sixth electromagnetic valve are communicated with, the fifth electromagnetic valve 5 is used for controlling the switching communication between the joint and the liquid path or the external gas path, the fifth electromagnetic valve 5 is used for controlling the switching communication between the pipeline (including the liquid path and the external gas path) and the joint B or the joint C, and the fourth and seventh electromagnetic valves 4 and 7 are used for keeping negative pressure to enable the solvent to hover.
More preferably, the joints B, C are all connected to a fifth solenoid valve, which is in turn connected in series with a sixth and seventh solenoid valve. When the fifth electromagnetic valve 5 is powered off, the joint B is connected into the pipeline, the joint C is disconnected with the pipeline, when the fifth electromagnetic valve 5 is powered on, the joint C is connected into the pipeline, and the joint B is disconnected with the pipeline. When the fourth or seventh electromagnetic valve 4, 7 is connected and disconnected when electrified, the solvent in the pipe keeps a hovering state, and when the vacuum pump generates enough negative pressure in the pipe, the electromagnetic valve 4, 7 is disconnected, so that the outlet end of the pipe is closed, and the function of keeping the negative pressure is achieved. The third and sixth solenoid valves 3, 6 are connected with the liquid path of the collecting device when being powered on, and are connected with the external gas paths of the solenoid valves 3, 6 when being powered off, and the gas paths are communicated with the air. Preferably, a drying device is arranged at the inlet of the external air path of the third electromagnetic valve and the sixth electromagnetic valve.
Preferably, the automatic cleaning instrument of the invention further comprises infrared liquid level sensors, and the sensor probes are respectively arranged outside the tube wall of each tube of the viscometer at a position below the top end of the tube orifice, such as 1cm below the top end of the tube orifice, and outside the tube wall of the liquid inlet pipeline of the collecting device, such as a pipeline close to the inlet of the collecting device. Through setting up in each orificial level sensor of viscosimeter, the height that the solvent rises at each pipe of viscosimeter is washd in the control, and when reaching the settlement height, the sensor received the signal, can close corresponding solenoid valve this moment, starts next step. Through the level sensor who sets up on collection device feed liquor pipeline, whether the intraductal washing solvent of monitoring viscosimeter has discharged into collection device basically completely.
Preferably, the capillary viscometer is respectively connected with the connectors through silica gel hoses.
Preferably, the collecting device for collecting the waste liquid may be a liquid storage bottle or a liquid storage tank, and the collecting device may be provided in plurality in series.
Preferably, the evacuation device is a vacuum pump, and an air inlet of the vacuum pump is connected with an air outlet of the collection device.
The multi-way solenoid valve used in the present invention, such as the two-way solenoid valve and the three-way solenoid valve, is not particularly limited, and is a known product in the prior art as long as the above-mentioned functions of the present invention can be achieved.
The capillary viscometer referred to in the present invention can be any capillary viscometer known in the art, such as a 2 or 3 tube viscometer, preferably a viscometer commonly used in the art, such as Ubbelohde, Pinschner, countercurrent, Fengshi, and the like.
Besides the components, the capillary viscometer cleaning instrument also comprises a control unit for realizing automatic control, wherein the control unit comprises a control panel, a controller, a logic control circuit and the like which accord with the working principle steps. The control panel is used for manual operation and sending out an instruction; the controller receives an instruction sent by the control panel, and controls the electrification and the outage of the electromagnetic valve and the vacuum pump through the logic control circuit. For example, the control unit receives a signal sent by the liquid level sensor and controls the electromagnetic valve and the vacuum device to be opened and closed according to the signal. For example, the controller adopts a singlechip control unit and is provided with a software program, and according to the working principle of the capillary viscometer cleaning instrument, the working steps realize automatic cleaning and drying of the capillary. The control unit of the present invention is not particularly limited, and those skilled in the art can design a program control unit meeting the requirements based on the operation principle and steps of the automatic cleaning apparatus of the present invention.
The liquid level sensor used in the present invention is a conventional product in the prior art, and is a device for converting liquid level pressure into an electrical signal, and the infrared liquid level sensor with a probe used in the present invention is not particularly limited as long as the liquid level monitoring function of the present invention can be achieved, for example, a known infrared reflective photoelectric sensor.
The cleaning instrument and the cleaning method for the capillary viscometer have the following beneficial effects: (1) the device is suitable for any capillary viscometer with two ports, three ports and above, and a device which is difficult to clean and is similar to a capillary viscometer, in particular suitable for the three-port capillary viscometer. The invention can simultaneously use three or more joints, utilizes the matching use of a plurality of groups of electromagnetic valves, switches the external gas path or liquid path of the multi-way electromagnetic valve, changes the air pressure in each tube of the viscometer as required to form negative pressure, and realizes the cleaning of each tube of the viscometer by the cleaning solvent. And similar product of prior art only has two joints, utilizes simple negative pressure principle, realizes the washing of solvent between two pipes of intercommunication, when capillary viscometer has more ports, then needs to suspend the washing, and the manual work is pulled out, is switched and is connected with the orificial being connected, just can realize the washing of every pipe. (2) Because can adopt the abluent mode of multiple solvent combination, and can rinse the viscosimeter repeatedly according to the setting value, consequently the capillary viscosimeter cleaning performance to high viscosity heavy oil use is obvious. (3) The cleaning solvent is injected once, and the capillary viscometer can hover and soak and repeatedly oscillate at the set position of each tube (such as the wide tube, the main tube and the side tube of a three-port viscometer), so that the consumption of the cleaning solvent is greatly reduced, the recovery pressure is reduced, the cost is saved, and the excellent cleaning effect can be achieved. (4) The current situation that the cleaning is difficult to carry out due to the fact that the cleaning is carried out manually by the traditional method, time and labor are wasted, and the automatic cleaning instrument is fully automatically controlled, convenient to use and simple to operate. Particularly, three or more joints can be respectively connected with each pipe orifice of the capillary viscometer, and the liquid level sensor is utilized to monitor the liquid level height of the solvent in the pipe and whether the solvent is discharged out of the viscometer, so that the full automation degree is realized, and the manual labor is liberated.
Drawings
FIG. 1: the structural schematic diagram of the full-automatic cleaning instrument of the capillary viscometer is taken as an example in Ubbelohde viscosity.
FIG. 2: schematic diagram of the detection position of the Sensors of the Ubbelohde and Pinbbelohde viscometer.
FIG. 3: a: wunsch capillary viscometer, b: planchet viscometer, c: countercurrent capillary viscometer, d: schematic diagram of a Fingers capillary viscometer. Where k represents the viscometer wide tube, x represents the Ubbelohde viscometer side tube, z represents the viscometer main tube, and y represents the Ping viscometer branch tube.
FIG. 4: two-way solenoid valve schematic.
FIG. 5: schematic diagram of three-way electromagnetic valve.
Detailed Description
The invention will be further illustrated with reference to the following specific examples. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that various changes or modifications can be made by those skilled in the art after reading the description of the present invention, and such equivalents also fall within the scope of the invention.
An embodiment of the automatic cleaning apparatus of the present invention is described below with reference to fig. 1.
The instrument cleaning part comprises a liquid inlet pipeline, a first group of electromagnetic valves, a second group of electromagnetic valves, a liquid discharge pipeline, a vacuum pump and a plurality of sensor probes.
The liquid inlet pipeline part comprises two liquid storage tanks, cleaning solvent liquid storage tanks 11 and 12 are connected in parallel, the branch of the liquid storage tank 11 is controlled by a two-way electromagnetic valve 1 to discharge liquid, and the branch of the liquid storage tank 12 is controlled by a two-way electromagnetic valve 2 to feed liquid.
The first set of solenoid valves comprises solenoid valves 3, 4, connected in series.
The second group of solenoid valves comprises solenoid valves 5, 6 and 7 which are connected in series.
The first group of electromagnetic valves and the second group of electromagnetic valves are connected in parallel and are connected in series with the liquid inlet pipeline, the liquid outlet pipeline and the pump as a whole.
The joint A is connected with the liquid outlet pipeline and the electromagnetic valve 3, and the joint B, C is connected with the electromagnetic valve 5. The positions are shown in figure 1.
The outlet ends of the electromagnetic valves 4 and 7 are connected with a collecting bottle 31. The collection bottle is connected with a vacuum pump. The air inlet of the vacuum pump is connected with the air outlet of the collecting bottle.
The two-way electromagnetic valves 1, 2, 4 and 7 are normally closed, are communicated when electrified and are disconnected when power is off; the three-way electromagnetic valves 3 and 6 are connected with the liquid path when being electrified and connected with the gas path when being powered off; when the three-way electromagnetic valve 5 is powered off, the side pipe (or the branch pipe of the Ping viscometer) of the black viscometer is connected into the pipeline, the main pipe is disconnected with the pipeline, and when the electromagnetic valve 5 is powered on, the main pipe of the viscometer is connected into the pipeline, and the side pipe or the branch pipe is disconnected with the pipeline.
The air path inlets of the three-way electromagnetic valves 3 and 6 are both provided with drying devices.
Sensor probes I, II and III are respectively arranged outside the pipe 1cm below the top end of each pipe orifice; and a sensor probe IV is arranged on the inlet pipeline of the collecting bottle.
Before the cleaning instruction is sent, all the electromagnetic valves are in a power-off state (as shown in figure 1), the controller 9 is controlled to send the cleaning instruction by clicking the control panel 8, and the electromagnetic valves and the vacuum pump are controlled to be powered on and powered off.
The device starts to carry out full-automatic cleaning after a worker sets parameters through the control panel and clicks the cleaning button to send a cleaning instruction, the viscometer can be taken away after the buzzer sends out an alarm and the viscometer is cleaned, and manual intervention is not needed in the whole process.
The running times of each link such as cleaning and the like can be set by an operator at will according to actual conditions.
Example 1:
cleaning the Ubbelohde viscometer: the viscometer wide tube, side tube, main tube are connected to the joint A, B, C respectively. Please refer to fig. 1.
Cleaning with petroleum ether only (loading of the tank 11 with petroleum ether):
cleaning a wide pipe and a side pipe:
(1) injecting solvent petroleum ether: after the program controller sends out a cleaning instruction, the electromagnetic valves 1 and 7 are electrified and communicated; the electromagnetic valves 3 and 6 are electrified and connected with the liquid path; the electromagnetic valves 2 and 4 are disconnected; the electromagnetic valve 5 is in a power-off state, and a side pipe is connected into a pipeline; the vacuum pump 41 is turned on. The proper amount of petroleum ether is sucked out from the liquid storage tank 11 by negative pressure and is sucked into the side pipe through the wide pipe. When the liquid level rises to a position 1cm below the top end of the side pipe, the sensor II receives a signal, the electromagnetic valves 1 and 7 are disconnected after delaying for 0.1s, the vacuum pump 41 is closed, and the solvent feeding process is finished.
(2) Suspending and soaking petroleum ether in a side pipe: after the above step is finished, keeping for 3min to make the solvent fully infiltrate the inner wall of the side tube of the viscometer.
(3) Pumping petroleum ether into a wide pipe: the program control electromagnetic valve 6 is powered off to change the gas circuit and is communicated with the atmosphere; the electromagnetic valve 4 is electrified and communicated; the electromagnetic valve 3 is still communicated with the liquid path when electrified; the vacuum pump 41 is turned on. Negative pressure is generated at the wide pipe of the viscometer, petroleum ether is pumped into the wide pipe, the liquid level reaches a position 1cm below the top end of the pipe orifice, the sensor I receives a signal, the electromagnetic valve 4 is switched off after 0.1s is delayed, and the vacuum pump 41 is switched off.
(4) Suspending and soaking petroleum ether in the wide tube: after the above step is finished, the solution is kept for 3min, so that the solvent is fully soaked into the inner wall of the wide tube of the viscometer.
(5) Petroleum ether oscillates in the side pipes and the wide pipes: the program control electromagnetic valve 3 is powered off to exchange the gas circuit and is communicated with the atmosphere; the electromagnetic valve 6 is electrified and communicated with the liquid path; the electromagnetic valve 7 is electrified and communicated; the vacuum pump 41 is turned on. When the liquid level rises to a position 1cm below the top end of the side pipe, the sensor II receives a signal, the electromagnetic valve 7 is switched off after delaying for 0.1s, the vacuum pump 41 is switched off, and petroleum ether is sucked into the side pipe through the viscometer wide pipe.
Then, the electromagnetic valve 3 is electrified and connected with a liquid circuit; the electromagnetic valve 4 is communicated; the electromagnetic valve 6 is powered off to exchange gas, and is communicated with the atmosphere; the vacuum pump 41 is turned on. The vacuum pump produces the negative pressure in the wide pipe department of viscosimeter, with petroleum ether suction wide pipe, and liquid level rises to the below 1cm department of distance top in the wide pipe, and sensor I receives the signal, delays 0.1s solenoid valve 4 disconnection, and vacuum pump 41 closes, and petroleum ether is inhaled the wide pipe by viscosimeter side pipe.
The above steps were repeated 10 times without interruption. The petroleum ether can be quickly and repeatedly washed in the viscometer wide tube and the side tube.
After the above steps are completed, the petroleum ether is in the wide pipe. Then cleaning the wide pipe and the main pipe:
(6) sucking petroleum ether from a wide pipe into a main pipe: the program control electromagnetic valve 5 is electrified, the main pipe of the viscometer is connected into the pipeline, and the side pipe is disconnected with the pipeline; the electromagnetic valve 3 is powered off to exchange gas, and is communicated with the atmosphere; the electromagnetic valve 6 is electrified to change the liquid path; the electromagnetic valve 7 is communicated; the electromagnetic valves 1, 2 and 4 are disconnected; the vacuum pump 41 is turned on. When the liquid level rises to a position 1cm below the top end of the main pipe, the sensor III receives a signal, the electromagnetic valve 7 is closed after delaying for 0.1s, and the vacuum pump 41 is closed. Petroleum ether is drawn into the main pipe from the viscometer wide tube.
(7) Suspending and soaking petroleum ether in the main pipe: after the above step is finished, the temperature is kept for 3min, so that the solvent fully infiltrates the inner wall of the main pipe of the viscometer.
(8) Petroleum ether oscillates in the main pipe and the wide pipe: the program control electromagnetic valve 3 is electrified and connected with a liquid circuit; the electromagnetic valve 6 is powered off to exchange gas, and is communicated with the atmosphere; the electromagnetic valve 4 is communicated; the vacuum pump 41 is turned on. The vacuum pump generates negative pressure at the wide pipe of the viscometer, petroleum ether is pumped into the wide pipe, the liquid level reaches a position 1cm below the top end of the pipe orifice, the sensor I receives a signal, the electromagnetic valve 4 is switched off after 0.1s is delayed, and the vacuum pump 41 is switched off. Petroleum ether is sucked into the wide pipe from the viscometer main pipe.
Next, the electromagnetic valve 3 is powered off to exchange gas, and the air is communicated; the electromagnetic valve 6 is electrified to change the liquid path; the electromagnetic valve 7 is communicated; the vacuum pump 41 is turned on. When the liquid level in the side pipe rises to a position 1cm below the top end, the sensor III receives a signal, the electromagnetic valve 7 is disconnected after delaying for 0.1s, the vacuum pump 41 is closed, and the petroleum ether is sucked into the main pipe through the viscometer wide pipe.
The above steps were repeated 10 times without interruption. The petroleum ether can be quickly and repeatedly washed in the viscometer wide tube and the main tube. After completion the petroleum ether is in the main pipe.
(9) And (3) discharging a waste solvent: the program control electromagnetic valve 3 is electrified and connected with a liquid circuit; the electromagnetic valve 4 is communicated; the electromagnetic valve 6 is powered off to exchange gas, and is communicated with the atmosphere; the electromagnetic valves 1, 2 and 7 are in a disconnected state; the electromagnetic valve 5 is electrified, and the main pipe is in a state of being connected into the pipeline; the vacuum pump 41 is turned on. The petroleum ether in the main pipe is discharged to a collecting bottle through a wide pipe. When the sensor IV on the inlet pipeline of the collecting bottle detects that the light transmittance is obviously reduced, the sensor does not act, and when the light transmittance is enhanced again to exceed the threshold value, a signal is sent out, which indicates that the waste solvent in the main pipe is basically exhausted. The electromagnetic valve 5 is powered off after 30s of delay, the side pipe of the viscometer is connected into a pipeline, and liquid drainage between the side pipe and the wide pipe is carried out. When the sensor IV on the inlet pipeline of the collecting bottle detects that the light transmittance is enhanced to exceed the threshold value again, a signal is sent out, and the waste solvent in the side pipe is basically discharged.
(10) And (3) cleaning for the second time: repeating the steps (1) to (9) and cleaning once more. (the number of washing times can be arbitrarily set on the control panel)
(11) And (3) drying: and keeping the air exhaust state after the previous step is finished so as to achieve the purging effect, and continuously purging for 6min to dry the side pipe.
Then, the electromagnetic valve 5 is electrified to connect the main pipe into the pipeline, and the main pipe and the wide pipe are blown for 6min, so that the main pipe and the wide pipe are dried.
After the cleaning is finished, the buzzer alarms to prompt that the cleaning is finished (the running times of each link such as cleaning and the like can be set by an operator at will according to actual conditions).
Cleaning with absolute ethanol only (tank 12 filled with absolute ethanol):
cleaning a wide pipe and a side pipe:
(12) injecting solvent absolute ethyl alcohol: after the program controller sends out a cleaning instruction, the electromagnetic valves 2 and 7 are electrified and communicated; the electromagnetic valves 3 and 6 are electrified and connected with the liquid path; the electromagnetic valves 1 and 4 are disconnected; the electromagnetic valve 5 is in a power-off state, and a side pipe is connected into a pipeline; the vacuum pump 41 is turned on. The negative pressure is used to suck the appropriate amount of absolute ethyl alcohol out of the liquid storage tank 12 and then the absolute ethyl alcohol is sucked into the side pipe through the wide pipe. When the liquid level rises to a position 1cm below the top end of the side pipe, the sensor II receives a signal, the electromagnetic valves 2 and 7 are disconnected after delaying for 0.1s, the vacuum pump 41 is closed, and the solvent feeding process is finished.
(13) Suspending and soaking anhydrous ethanol in a side pipe: after the above step is finished, keeping for 3min to make the solvent fully infiltrate the inner wall of the side tube of the viscometer.
(14) Pumping absolute ethyl alcohol into a wide tube: the program control electromagnetic valve 6 is powered off to change the gas circuit and is communicated with the atmosphere; the electromagnetic valve 4 is communicated; the electromagnetic valve 3 is still connected with a liquid path; the vacuum pump 41 is turned on. Generating negative pressure at the wide pipe of the viscometer, pumping absolute ethyl alcohol into the wide pipe, enabling the liquid level to reach a position 1cm below the top end of the pipe orifice, enabling the sensor I to receive a signal, delaying the disconnection of the electromagnetic valve 4 for 0.1s, and closing the vacuum pump 41.
(15) Suspending and soaking anhydrous ethanol in the wide tube: after the above step is finished, the solution is kept for 3min, so that the solvent is fully soaked into the inner wall of the wide tube of the viscometer.
(16) The absolute ethyl alcohol oscillates in the side tube and the wide tube: the program control electromagnetic valve 3 is powered off to exchange the gas circuit and is communicated with the atmosphere; the electromagnetic valve 6 is electrified to change the liquid path; the electromagnetic valve 7 is communicated; the vacuum pump 41 is turned on. When the liquid level rises to a position 1cm below the top end of the side pipe, the sensor II receives a signal, the electromagnetic valve 7 is switched off after delaying for 0.1s, the vacuum pump 41 is switched off, and the absolute ethyl alcohol is sucked into the side pipe through the viscometer wide pipe.
Then, the electromagnetic valve 3 is electrified and connected with a liquid circuit; the electromagnetic valve 4 is communicated; the electromagnetic valve 6 is powered off to exchange gas, and is communicated with the atmosphere; the vacuum pump 41 is turned on. The vacuum pump generates negative pressure at the wide pipe of the viscometer, absolute ethyl alcohol is pumped into the wide pipe, when the liquid level in the wide pipe rises to a position 1cm below the top end, the sensor I receives a signal, the electromagnetic valve 4 is switched off after delaying for 0.1s, the vacuum pump 41 is switched off, and the absolute ethyl alcohol is sucked into the wide pipe from the side pipe of the viscometer.
The above steps were repeated 10 times without interruption. The absolute ethyl alcohol can be quickly and repeatedly washed in the viscometer wide tube and the side tube.
After the above steps are finished, the absolute ethyl alcohol is in a wide tube. Then cleaning the wide pipe and the main pipe:
(17) the absolute ethyl alcohol is sucked into the main pipe through a wide pipe: the program control electromagnetic valve 5 is electrified, the main pipe of the viscometer is connected into the pipeline, and the side pipe is disconnected with the pipeline; the electromagnetic valve 3 is powered off to exchange gas, and is communicated with the atmosphere; the electromagnetic valve 6 is electrified to change the liquid path; the electromagnetic valve 7 is communicated; the electromagnetic valves 1, 2 and 4 are disconnected; the vacuum pump 41 is turned on. When the liquid level rises to a position 1cm below the top end of the main pipe, the sensor III receives a signal, the electromagnetic valve 7 is closed after delaying for 0.1s, and the vacuum pump 41 is closed. Anhydrous ethanol is sucked into the main tube through the viscometer wide tube.
(18) The absolute ethyl alcohol is suspended and soaked in the main pipe: after the above step is finished, the temperature is kept for 3min, so that the solvent fully infiltrates the inner wall of the main pipe of the viscometer.
(19) The absolute ethyl alcohol oscillates in the main pipe and the wide pipe: the program control electromagnetic valve 3 is electrified and connected with a liquid circuit; the electromagnetic valve 6 is powered off to exchange gas, and is communicated with the atmosphere; the electromagnetic valve 4 is communicated; the vacuum pump 41 is turned on. The vacuum pump generates negative pressure at the wide pipe of the viscometer, absolute ethyl alcohol is pumped into the wide pipe, the liquid level reaches a position 1cm below the top end of the pipe orifice, the sensor I receives a signal, the electromagnetic valve 4 is switched off after 0.1s, and the vacuum pump 41 is switched off. Anhydrous ethanol is sucked into the wide tube from the viscometer main tube.
Next, the electromagnetic valve 3 is powered off to exchange gas, and the air is communicated; the electromagnetic valve 6 is electrified to change the liquid path; the electromagnetic valve 7 is communicated; the vacuum pump 41 is turned on. When the liquid level in the side pipe rises to a position 1cm below the top end, the sensor III receives a signal, the electromagnetic valve 7 is disconnected after delaying for 0.1s, the vacuum pump 41 is closed, and the absolute ethyl alcohol is sucked into the main pipe through the viscometer wide pipe.
The above steps were repeated 10 times without interruption. The absolute ethyl alcohol can be quickly and repeatedly washed in the viscometer wide tube and the main tube.
(20) And (3) discharging a waste solvent: the program control electromagnetic valve 3 is electrified and connected with a liquid circuit; the electromagnetic valve 4 is communicated; the electromagnetic valve 6 is powered off to exchange gas, and is communicated with the atmosphere; the electromagnetic valves 1, 2 and 7 are in a disconnected state; the electromagnetic valve 5 is electrified, and the main pipe is in a state of being connected into the pipeline; the vacuum pump 41 is turned on. The absolute ethyl alcohol in the main pipe is discharged to a collecting bottle through a wide pipe. When the sensor IV on the inlet pipeline of the collecting bottle detects that the light transmittance is obviously reduced, the sensor does not act, and when the light transmittance is enhanced again and exceeds the threshold value, a signal is sent out, which indicates that the waste solvent in the main pipe is basically exhausted. The electromagnetic valve 5 is powered off after 30s of delay, the side pipe of the viscometer is connected into a pipeline, and liquid drainage between the side pipe and the wide pipe is carried out. When the sensor IV on the inlet pipeline of the collecting bottle detects that the light transmittance is enhanced to exceed the threshold value again, a signal is sent out, and the waste solvent in the side pipe is basically discharged.
(21) And (3) cleaning for the second time: repeating the steps (1) to (9) and cleaning once more. (the number of washing times can be arbitrarily set on the control panel)
(22) And (3) drying: and keeping the air exhaust state after the previous step is finished so as to achieve the purging effect, and continuously purging for 6min to dry the side pipe.
Then, the electromagnetic valve 5 is electrified to connect the main pipe into the pipeline, and the main pipe and the wide pipe are blown for 6min, so that the main pipe and the wide pipe are dried.
After the cleaning is finished, the buzzer alarms to prompt that the cleaning is finished (the running times of each link such as cleaning and the like can be set by an operator at will according to actual conditions).
Cleaning with petroleum ether and then with anhydrous ethanol (with petroleum ether in tank 11 and anhydrous ethanol in tank 12):
(23) and (5) repeating the steps (1) to (10).
(24) And (5) repeating the steps (12) to (22).
Example 2:
cleaning the flatbed viscometer: the viscometer wide tube, branch tube, main tube are connected to the joint A, B, C respectively.
Cleaning with gasoline only (tank 11 filled with gasoline):
cleaning the wide pipe and the main pipe:
(25) solvent gasoline injection: after the program controller sends out a cleaning instruction, the electromagnetic valves 1 and 7 are electrified and communicated; the electromagnetic valves 3 and 6 are electrified and connected with the liquid path; the electromagnetic valve 5 is electrified, and the main pipe of the viscometer is connected into a pipeline; the electromagnetic valves 2 and 4 are disconnected; the vacuum pump 41 is turned on. The negative pressure is used to suck out a proper amount of gasoline from the liquid storage tank 11 and the gasoline is sucked into the main pipe through the wide pipe. When the liquid level rises to a position 1cm below the top end of the main pipe, the sensor III receives a signal, the solenoid valves 1 and 7 are disconnected after delaying for 0.1s, the vacuum pump 41 is closed, and the solvent feeding process is finished.
(26) The gasoline is suspended and soaked in the main pipe: after the above step is finished, the temperature is kept for 3min, so that the solvent fully infiltrates the inner wall of the main pipe of the viscometer.
(27) Pumping gasoline into a wide pipe: the program control electromagnetic valve 6 is powered off to change the gas circuit and is communicated with the atmosphere; the electromagnetic valve 3 is still connected with a liquid path; the electromagnetic valve 4 is communicated; the vacuum pump 41 is turned on. The vacuum pump generates negative pressure at the wide pipe of the viscometer, gasoline is pumped into the wide pipe, the liquid level reaches a position 1cm below the wide top end, the sensor I receives a signal, the electromagnetic valve 4 is switched off after delaying for 0.1s, and the vacuum pump 41 is switched off.
(28) The gasoline is suspended and soaked in the wide tube: after the above step is finished, the solution is kept for 3min, so that the solvent is fully soaked into the inner wall of the wide tube of the viscometer.
(29) The gasoline oscillates in the main pipe and the wide pipe: the program control electromagnetic valve 3 is powered off to exchange the gas circuit and is communicated with the atmosphere; the electromagnetic valve 6 is electrified to change the liquid path; the electromagnetic valve 7 is communicated; the vacuum pump 41 is turned on. When the liquid level rises to a position 1cm below the top end of the main pipe, the sensor III receives a signal, the electromagnetic valve 7 is switched off after delaying for 0.1s, the vacuum pump 41 is switched off, and the gasoline is sucked into the main pipe through the viscometer wide pipe.
Then, the electromagnetic valve 3 is electrified and connected with a liquid circuit; the electromagnetic valve 4 is communicated; the electromagnetic valve 6 is powered off to exchange gas, and is communicated with the atmosphere; the vacuum pump 41 is turned on. The vacuum pump produces the negative pressure in the viscosimeter wide pipe department, with petrol suction wide pipe, rises to the below 1cm department of wide pipe top when the liquid level, and sensor I receives the signal, delays 0.1s solenoid valve 4 disconnection, and vacuum pump 41 closes, and petrol is inhaled the wide pipe by the viscosimeter main pipe.
The above steps were repeated 10 times without interruption. The gasoline can be quickly and repeatedly flushed in the wide tube and the main tube of the viscometer.
(30) And (3) discharging a waste solvent: the program control electromagnetic valve 3 is electrified and connected with a liquid circuit; the electromagnetic valve 4 is communicated; the electromagnetic valve 6 is powered off to exchange gas, and is communicated with the atmosphere; the solenoid valves 1, 2, 7 are off; the electromagnetic valve 5 is electrified, and the main pipe is in a state of being connected into the pipeline; the vacuum pump 41 is turned on. The vacuum pump generates negative pressure at the wide pipe of the viscometer to drain the main pipe and the wide pipe, and the waste solvent in the main pipe and the wide pipe is pumped out through the wide pipe. When the sensor IV on the inlet pipeline of the collecting bottle detects that the light transmittance is obviously reduced, the sensor does not act, and when the light transmittance is increased again to exceed the threshold value, a signal is sent out, which indicates that the waste solvent in the main pipe is basically exhausted.
(31) And (3) cleaning for the second time: repeating the steps (1) to (9) and cleaning once more. (the number of washing times can be arbitrarily set on the control panel)
(32) And (3) drying: and keeping the air exhaust state after the previous step is finished so as to achieve the purging effect, continuously purging for 6min, and drying the main pipe and the wide pipe.
After the cleaning is finished, the buzzer alarms to prompt that the cleaning is finished (the running times of each link such as cleaning and the like can be set by an operator at will according to actual conditions).
Cleaning with petroleum ether only (loading of the tank 12 with petroleum ether):
cleaning the wide pipe and the main pipe:
(33) injecting solvent petroleum ether: after the program controller sends out a cleaning instruction, the electromagnetic valves 2 and 7 are electrified and communicated; the electromagnetic valves 3 and 6 are electrified and connected with the liquid path; the electromagnetic valve 5 is electrified, and the main pipe of the viscometer is connected into a pipeline; the electromagnetic valves 1 and 4 are disconnected; the vacuum pump 41 is turned on. The negative pressure is used to suck out a proper amount of petroleum ether from the liquid storage tank 12 and the petroleum ether is sucked into the main pipe through the wide pipe. When the liquid level rises to a position 1cm below the top end of the main pipe, the sensor III receives a signal, the electromagnetic valves 2 and 7 are disconnected after delaying for 0.1s, the vacuum pump 41 is closed, and the solvent feeding process is finished.
(34) Suspending and soaking petroleum ether in the main pipe: after the above step is finished, the temperature is kept for 3min, so that the solvent fully infiltrates the inner wall of the main pipe of the viscometer.
(35) Pumping petroleum ether into a wide pipe: the program control electromagnetic valve 6 is powered off to change the gas circuit and is communicated with the atmosphere; the electromagnetic valve 3 is still connected with a liquid path; the electromagnetic valve 4 is communicated; the vacuum pump 41 is turned on. The vacuum pump generates negative pressure at the wide pipe of the viscometer, petroleum ether is pumped into the wide pipe, the liquid level reaches a position 1cm below the wide top end, the sensor I receives a signal, the electromagnetic valve 4 is switched off after delaying for 0.1s, and the vacuum pump 41 is switched off.
(36) Suspending and soaking petroleum ether in the wide tube: after the above step is finished, the solution is kept for 3min, so that the solvent is fully soaked into the inner wall of the wide tube of the viscometer.
(37) Petroleum ether oscillates in the main pipe and the wide pipe: the program control electromagnetic valve 3 is powered off to exchange the gas circuit and is communicated with the atmosphere; the electromagnetic valve 6 is electrified to change the liquid path; the electromagnetic valve 7 is communicated; the vacuum pump 41 is turned on. When the liquid level rises to a position 1cm below the top end of the main pipe, the sensor III receives a signal, the electromagnetic valve 7 is switched off after delaying for 0.1s, the vacuum pump 41 is switched off, and petroleum ether is sucked into the main pipe through the viscometer wide pipe.
Then, the electromagnetic valve 3 is electrified and connected with a liquid circuit; the electromagnetic valve 4 is communicated; the electromagnetic valve 6 is powered off to exchange gas, and is communicated with the atmosphere; the vacuum pump 41 is turned on. The vacuum pump generates negative pressure at the wide pipe of the viscometer, petroleum ether is pumped into the wide pipe, when the liquid level rises to a position 1cm below the top end of the wide pipe, the sensor I receives a signal, the electromagnetic valve 4 is disconnected after delaying for 0.1s, the vacuum pump 41 is closed, and the petroleum ether is sucked into the wide pipe from the main pipe of the viscometer.
The above steps were repeated 10 times without interruption. The petroleum ether can be quickly and repeatedly washed in the viscometer wide tube and the main tube.
(38) And (3) discharging a waste solvent: the program control electromagnetic valve 3 is electrified and connected with a liquid circuit; the electromagnetic valve 4 is communicated; the electromagnetic valve 6 is powered off to exchange gas, and is communicated with the atmosphere; the solenoid valves 1, 2, 7 are off; the electromagnetic valve 5 is electrified, and the main pipe is in a state of being connected into the pipeline; the vacuum pump 41 is turned on. The vacuum pump generates negative pressure at the wide pipe of the viscometer to drain the main pipe and the wide pipe, and the waste solvent in the main pipe and the wide pipe is pumped out through the wide pipe. When the sensor IV on the inlet pipeline of the collecting bottle detects that the light transmittance is obviously reduced, the sensor does not act, and when the light transmittance is increased again to exceed the threshold value, a signal is sent out, which indicates that the waste solvent in the main pipe is basically exhausted.
(39) And (3) cleaning for the second time: repeating the steps (1) to (9) and cleaning once more. (the number of washing times can be arbitrarily set on the control panel)
(40) And (3) drying: and keeping the air exhaust state after the previous step is finished so as to achieve the purging effect, continuously purging for 6min, and drying the main pipe and the wide pipe.
After the cleaning is finished, the buzzer alarms to prompt that the cleaning is finished (the running times of each link such as cleaning and the like can be set by an operator at will according to actual conditions).
Cleaning with gasoline and then with petroleum ether:
(41) repeating steps (25) - (31).
(42) And (4) repeating the steps (33) to (40).
Example 3:
cleaning the countercurrent viscometer: the viscometer wide tube and the main tube are connected to the joint A, C respectively.
Cleaning with gasoline only (tank 11 filled with gasoline):
cleaning the wide pipe and the main pipe:
(43) solvent gasoline injection: after the program controller sends out a cleaning instruction, the electromagnetic valves 1 and 7 are electrified and communicated; the electromagnetic valves 3 and 6 are electrified and connected with the liquid path; the electromagnetic valve 5 is electrified, and the main pipe of the viscometer is connected into a pipeline; the electromagnetic valves 2 and 4 are disconnected; the vacuum pump 41 is turned on. The negative pressure is used to suck out a proper amount of gasoline from the liquid storage tank 11 and the gasoline is sucked into the main pipe through the wide pipe. When the liquid level rises to a position 1cm below the top end of the main pipe, the sensor III receives a signal, the solenoid valves 1 and 7 are disconnected after delaying for 0.1s, the vacuum pump 41 is closed, and the solvent feeding process is finished.
(44) The gasoline is suspended and soaked in the main pipe: after the above step is finished, the temperature is kept for 3min, so that the solvent fully infiltrates the inner wall of the main pipe of the viscometer.
(45) Pumping gasoline into a wide pipe: the program control electromagnetic valve 6 is powered off to change the gas circuit and is communicated with the atmosphere; the electromagnetic valve 3 is still connected with a liquid path; the electromagnetic valve 4 is communicated; the vacuum pump 41 is turned on. The vacuum pump generates negative pressure at the wide pipe of the viscometer, gasoline is pumped into the wide pipe, the liquid level reaches a position 1cm below the wide top end, the sensor I receives a signal, the electromagnetic valve 4 is switched off after delaying for 0.1s, and the vacuum pump 41 is switched off.
(46) The gasoline is suspended and soaked in the wide tube: after the above step is finished, the solution is kept for 3min, so that the solvent is fully soaked into the inner wall of the wide tube of the viscometer.
(47) The gasoline oscillates in the main pipe and the wide pipe: the program control electromagnetic valve 3 is powered off to exchange the gas circuit and is communicated with the atmosphere; the electromagnetic valve 6 is electrified to change the liquid path; the electromagnetic valve 7 is communicated; the vacuum pump 41 is turned on. When the liquid level rises to a position 1cm below the top end of the main pipe, the sensor III receives a signal, the electromagnetic valve 7 is switched off after delaying for 0.1s, the vacuum pump 41 is switched off, and the gasoline is sucked into the main pipe through the viscometer wide pipe.
Then, the electromagnetic valve 3 is electrified and connected with a liquid circuit; the electromagnetic valve 4 is communicated; the electromagnetic valve 6 is powered off to exchange gas, and is communicated with the atmosphere; the vacuum pump 41 is turned on. The vacuum pump produces the negative pressure in the viscosimeter wide pipe department, with petrol suction wide pipe, rises to the below 1cm department of wide pipe top when the liquid level, and sensor I receives the signal, delays 0.1s solenoid valve 4 disconnection, and vacuum pump 41 closes, and petrol is inhaled the wide pipe by the viscosimeter main pipe.
The above steps were repeated 10 times without interruption. The gasoline can be quickly and repeatedly flushed in the wide tube and the main tube of the viscometer.
(48) And (3) discharging a waste solvent: the program control electromagnetic valve 3 is electrified and connected with a liquid circuit; the electromagnetic valve 4 is communicated; the electromagnetic valve 6 is powered off to exchange gas, and is communicated with the atmosphere; the solenoid valves 1, 2, 7 are off; the electromagnetic valve 5 is electrified, and the main pipe is in a state of being connected into the pipeline; the vacuum pump 41 is turned on. The vacuum pump generates negative pressure at the wide pipe of the viscometer to drain the main pipe and the wide pipe, and the waste solvent in the main pipe and the wide pipe is pumped out through the wide pipe. When the sensor IV on the inlet pipeline of the collecting bottle detects that the light transmittance is obviously reduced, the sensor does not act, and when the light transmittance is increased again to exceed the threshold value, a signal is sent out, which indicates that the waste solvent in the main pipe is basically exhausted.
(49) And (3) cleaning for the second time: repeating the steps (1) to (9) and cleaning once more. (the number of washing times can be arbitrarily set on the control panel)
(50) And (3) drying: and keeping the air exhaust state after the previous step is finished so as to achieve the purging effect, continuously purging for 6min, and drying the main pipe and the wide pipe.
After the cleaning is finished, the buzzer alarms to prompt that the cleaning is finished (the running times of each link such as cleaning and the like can be set by an operator at will according to actual conditions).
Cleaning with absolute ethanol only (absolute ethanol in the liquid storage tank 12):
cleaning the wide pipe and the main pipe:
(51) injecting solvent absolute ethyl alcohol: after the program controller sends out a cleaning instruction, the electromagnetic valves 2 and 7 are electrified and communicated; the electromagnetic valves 3 and 6 are electrified and connected with the liquid path; the electromagnetic valve 5 is electrified, and the main pipe of the viscometer is connected into a pipeline; the electromagnetic valves 1 and 4 are disconnected; the vacuum pump 41 is turned on. The negative pressure is used to suck the appropriate amount of absolute ethyl alcohol out of the liquid storage tank 12 and into the main pipe through the wide pipe. When the liquid level rises to a position 1cm below the top end of the main pipe, the sensor III receives a signal, the electromagnetic valves 2 and 7 are disconnected after delaying for 0.1s, the vacuum pump 41 is closed, and the solvent feeding process is finished.
(52) The absolute ethyl alcohol is suspended and soaked in the main pipe: after the above step is finished, the temperature is kept for 3min, so that the solvent fully infiltrates the inner wall of the main pipe of the viscometer.
(53) Pumping absolute ethyl alcohol into a wide tube: the program control electromagnetic valve 6 is powered off to change the gas circuit and is communicated with the atmosphere; the electromagnetic valve 3 is still connected with a liquid path; the electromagnetic valve 4 is communicated; the vacuum pump 41 is turned on. The vacuum pump generates negative pressure at the wide pipe of the viscometer, absolute ethyl alcohol is pumped into the wide pipe, the liquid level reaches a position 1cm below the wide top end, the sensor I receives a signal, the electromagnetic valve 4 is switched off after delaying for 0.1s, and the vacuum pump 41 is switched off.
(54) Suspending and soaking anhydrous ethanol in the wide tube: after the above step is finished, the solution is kept for 3min, so that the solvent is fully soaked into the inner wall of the wide tube of the viscometer.
(55) The absolute ethyl alcohol oscillates in the main pipe and the wide pipe: the program control electromagnetic valve 3 is powered off to exchange the gas circuit and is communicated with the atmosphere; the electromagnetic valve 6 is electrified to change the liquid path; the electromagnetic valve 7 is communicated; the vacuum pump 41 is turned on. When the liquid level rises to a position 1cm below the top end of the main pipe, the sensor III receives a signal, the electromagnetic valve 7 is switched off after delaying for 0.1s, the vacuum pump 41 is switched off, and the absolute ethyl alcohol is sucked into the main pipe through the viscometer wide pipe.
Then, the electromagnetic valve 3 is electrified and connected with a liquid circuit; the electromagnetic valve 4 is communicated; the electromagnetic valve 6 is powered off to exchange gas, and is communicated with the atmosphere; the vacuum pump 41 is turned on. The vacuum pump generates negative pressure at the wide pipe of the viscometer, absolute ethyl alcohol is pumped into the wide pipe, when the liquid level rises to a position 1cm below the top end of the wide pipe, the sensor I receives a signal, the electromagnetic valve 4 is switched off after delaying 0.1s, the vacuum pump 41 is switched off, and the absolute ethyl alcohol is sucked into the wide pipe from the main pipe of the viscometer.
The above steps were repeated 10 times without interruption. The absolute ethyl alcohol can be quickly and repeatedly washed in the viscometer wide tube and the main tube.
(56) And (3) discharging a waste solvent: the program control electromagnetic valve 3 is electrified and connected with a liquid circuit; the electromagnetic valve 4 is communicated; the electromagnetic valve 6 is powered off to exchange gas, and is communicated with the atmosphere; the solenoid valves 1, 2, 7 are off; the electromagnetic valve 5 is electrified, and the main pipe is in a state of being connected into the pipeline; the vacuum pump 41 is turned on. The vacuum pump generates negative pressure at the wide pipe of the viscometer to drain the main pipe and the wide pipe, and the waste solvent in the main pipe and the wide pipe is pumped out through the wide pipe. When the sensor IV on the inlet pipeline of the collecting bottle detects that the light transmittance is obviously reduced, the sensor does not act, and when the light transmittance is increased again to exceed the threshold value, a signal is sent out, which indicates that the waste solvent in the main pipe is basically exhausted.
(57) And (3) cleaning for the second time: repeating the steps (1) to (9) and cleaning once more. (the number of washing times can be arbitrarily set on the control panel)
(58) And (3) drying: and keeping the air exhaust state after the previous step is finished so as to achieve the purging effect, continuously purging for 6min, and drying the main pipe and the wide pipe.
After the cleaning is finished, the buzzer alarms to prompt that the cleaning is finished (the running times of each link such as cleaning and the like can be set by an operator at will according to actual conditions).
Firstly, using gasoline and then using absolute ethyl alcohol for cleaning:
(59) repeating steps (43) - (49).
(60) And (5) repeating the steps (51) to (58).
Example 4:
the cleaning procedure for the Fingers viscometer was the same as the counter flow.
The embodiments of the present invention have been described above. However, the present invention is not limited to the above embodiment. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (16)
1. A capillary viscometer self-cleaning instrument, comprising:
a liquid storage device for containing a cleaning solvent,
a joint for connecting the pipe orifices of the capillary viscometer,
a collecting device for collecting the waste liquid,
a vacuum-pumping device is arranged on the vacuum-pumping device,
a multi-way electromagnetic valve is arranged on the upper portion of the main body,
one of the joints is respectively connected with the liquid storage device and the collecting device through pipelines; the other joints are connected with a collecting device through pipelines;
the collecting device is connected with the vacuumizing device;
the multi-way electromagnetic valve is arranged on the connecting pipeline and is respectively used for controlling: injecting a solvent into the viscometer to be washed by the liquid storage device; different joints are communicated with the pipeline in a switching way; each joint is communicated with a liquid path communicated with the collecting device or an external gas path accessed through an electromagnetic valve in a switching way; when a certain joint is communicated with a liquid path on a pipeline and a vacuumizing device enables the inside of the pipe connected with the joint to generate enough negative pressure, the vacuum pipe is used for closing the pipeline and keeping the negative pressure inside the pipe; and the suspension soaking and the repeated oscillation of the solvent in each pipe of the viscometer are realized through controlling the electromagnetic valve.
2. The automatic cleaning instrument for the capillary viscometer of claim 1, further comprising a liquid level sensor, wherein the probe of the liquid level sensor is respectively installed below the top end of the pipe orifice of each pipe of the viscometer and outside the pipe wall of the liquid inlet pipeline of the collection device.
3. The automatic cleaning instrument for the capillary viscometer of claim 1, wherein more than 2 liquid storage devices are arranged in parallel, and a two-way solenoid valve is arranged on each parallel branch to control the liquid output of the liquid storage devices.
4. The automatic cleaning instrument for the capillary viscometer of any one of claims 1 to 3, wherein there are 3 connectors, wherein the connector A is connected with the total liquid outlet pipeline of the liquid storage device and is connected with the liquid inlet pipeline of the collection device through a three-way electromagnetic valve and a two-way electromagnetic valve which are connected in series in sequence, and the connector B, C is connected with the liquid inlet pipeline of the collection device through a three-way electromagnetic valve, a two-way electromagnetic valve and a three-way electromagnetic valve which are connected in series in sequence.
5. The automatic cleaning instrument for the capillary viscometer of claim 4, wherein two groups of electromagnetic valves are arranged between the connector and the collection device in parallel, the first group of electromagnetic valves comprises a third electromagnetic valve and a fourth electromagnetic valve which are sequentially connected in series, the second group of electromagnetic valves comprises a fifth electromagnetic valve, a sixth electromagnetic valve and a seventh electromagnetic valve which are sequentially connected in series, the first group of electromagnetic valves is arranged on a connecting pipeline between the connector A and the collection device, the second group of electromagnetic valves is arranged on a connecting pipeline between the connector B, C and the collection device, the third electromagnetic valve and the sixth electromagnetic valve are communicated with an external air circuit and used for controlling the switching communication between the connector and the liquid circuit or the external air circuit, the fifth electromagnetic valve is used for controlling the switching communication between the pipeline and the connector B or the connector C, and the fourth electromagnetic valve and the seventh electromagnetic valve are used for keeping negative pressure so that a solvent.
6. The automatic cleaning instrument for the capillary viscometer of claim 5, wherein the connector B, C is respectively connected with a fifth solenoid valve, the fifth solenoid valve is sequentially connected with a sixth solenoid valve and a seventh solenoid valve in series, the connector C is connected to the pipeline when the fifth solenoid valve is powered on, the connector B is connected to the pipeline when the fifth solenoid valve is powered off, the fourth solenoid valve or the seventh solenoid valve is powered on, and the solvent in the tube is kept in a hovering state when the fourth solenoid valve or the seventh solenoid valve is powered off.
7. The automatic cleaning instrument for the capillary viscometer of claim 5 or 6, wherein the connector is communicated with the liquid path of the collection device when the third and sixth solenoid valves are powered on, and is communicated with the external air path of the third and sixth solenoid valves when the third and sixth solenoid valves are powered off, and the external air path is communicated with air.
8. The automatic cleaning instrument for the capillary viscometer of claim 7, wherein a drying device is installed at the air inlet of the external air path of the third solenoid valve and the sixth solenoid valve.
9. The automatic cleaning instrument for the capillary viscometer of claim 1, wherein the liquid storage device can be a liquid storage bottle or a liquid storage tank, and the liquid storage bottle or the liquid storage tank only has an air inlet function after storing a solvent;
the collecting device can be a liquid storage bottle or a liquid storage tank, and a plurality of collecting devices can be connected in series;
the vacuum pumping device is a vacuum pump;
the connector is a quick connector;
the capillary viscometer is respectively connected with the joint through the silica gel hose.
10. The capillary viscometer automatic cleaner of claim 9, the reservoir means enclosing the liquid inlet with an upper cap having a one-way valve for air intake.
11. The capillary viscometer automatic cleaner of claim 9, the quick-connect coupling being a pagoda coupling.
12. The automatic cleaning instrument for the capillary viscometer of claim 1, further comprising a control unit for realizing automatic control, wherein the control unit comprises a control panel, a controller and a logic control circuit according with working principle steps, and the control panel is used for manual operation and sending out instructions; the controller receives an instruction sent by the control panel, and controls the electrification and the outage of the electromagnetic valve and the vacuumizing device through the logic control circuit.
13. The automatic cleaning instrument for the capillary viscometer of claim 12, wherein the control unit receives a signal from the liquid level sensor and controls the solenoid valve and the vacuum extractor to open or close according to the signal.
14. The capillary viscometer of claim 1, wherein the capillary viscometer is a two-port or three-port viscometer.
15. The capillary viscometer of claim 10, being a wurtzite capillary viscometer, a penny capillary viscometer, a countercurrent capillary viscometer, or a fickian capillary viscometer.
16. The capillary viscometer automatic cleaner of claim 1, the external air circuit in communication with air.
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| CN108645753B (en) * | 2018-06-23 | 2024-03-22 | 华电电力科学研究院有限公司 | Device and method for fully automatically measuring kinematic viscosity and viscosity index of oil for power equipment |
| AT522151B1 (en) * | 2018-12-21 | 2020-09-15 | Anton Paar Gmbh | Procedure for cleaning a viscometer |
| CN109940012B (en) * | 2019-03-14 | 2020-05-26 | 自然资源部第二海洋研究所 | Automatic soaking device of concentrated acid of glass bottle for standard substance |
| CN112238106A (en) * | 2019-07-17 | 2021-01-19 | 中国科学院上海高等研究院 | Cleaning system, cleaning method and high-throughput screening equipment |
| CN114345818B (en) * | 2022-01-10 | 2023-04-07 | 辽宁成大生物股份有限公司 | Online soaking and cleaning method and cleaning tank for automatic harvester |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3314076A1 (en) * | 1983-04-19 | 1984-10-25 | Bayer Ag, 5090 Leverkusen | Viscometer with cleaning device |
| KR930000021Y1 (en) * | 1991-12-15 | 1993-01-09 | 대한전선 주식회사 | Viscosity meter cleanner |
| KR20040049995A (en) * | 2002-12-06 | 2004-06-14 | 주식회사 포스코 | An apparatus for cleaning the capillary viscometer |
| CN202092927U (en) * | 2011-05-26 | 2011-12-28 | 山东惠工电气股份有限公司 | Automatic kinematic viscosity tester |
| CN106914462A (en) * | 2017-04-26 | 2017-07-04 | 北京市计量检测科学研究院 | Capillary viscosimeter automatic flushing device |
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