Non-contact liquid taking system

Abstract

The utility model discloses a non-contact type liquid taking system which comprises a liquid taking box, a solution storage tank and a liquid taking bottle, the liquid taking box comprises a box body, a gas supply device and a peristaltic pump are installed in the box body, a pump head of the peristaltic pump is arranged on a box body of a gas path bin, and a liquid taking bottle clamping table and a liquid taking pipe support are arranged on the box body on the same side of the pump head. The liquid taking pipe support is located above the liquid taking bottle clamping table, the liquid taking bottle is clamped on the liquid taking bottle clamping table, the solution storage tank is communicated with the gas supply device through a gas supply pipe, the solution storage tank is provided with a liquid taking pipe inserted into the tank bottom, and the middle of the liquid taking pipe is wound on a pump head of the peristaltic pump. The free end of the liquid taking pipe is erected on the liquid taking pipe support and then connected with the liquid taking bottle in a sealed mode. The dismounting process is simple and convenient, and field operation is facilitated; non-contact type liquid taking can be achieved in the liquid taking link, and the risks of pipeline cleaning and operation under pressure are effectively avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to automatic liquid taking technical field, more specifically, the utility model is a kind of contactless liquid taking system. BACKGROUND

[0002] In the current rapid development of biological medical and chemical pharmaceutical industry, the treatment of chemical harmful medium and toxic wastewater is always a crucial and challenging link. The precision of manual liquid taking mode is often difficult to guarantee. Even experienced operators, it is difficult to avoid errors in nervous or fatigue state. Such inaccurate liquid taking amount not only affects the subsequent experimental results, but also may mislead the entire research or production process, causing incalculable loss. Therefore, improving the liquid taking precision and realizing the automatic and intelligent liquid taking operation have become the focus of attention inside and outside the industry.

[0003] More seriously, oxygen in the air is easy to react with some sampled liquid, which leads to the change of the composition of the liquid taking solution, and further affects the accuracy of the detection result. Such error caused by environmental factors is often difficult to detect, but it may have a profound impact on the entire research or production process. Therefore, taking effective isolation and protection measures during the liquid taking process is an important prerequisite to ensure the accuracy of the detection result. SUMMARY

[0004] To solve the technical problem of unsafe liquid taking process of existing dangerous solution, the utility model innovatively provides a contactless liquid taking system, which is simple to disassemble and assemble, and convenient for on-site operation. The liquid taking link can realize contactless liquid taking, effectively avoiding the risk of pipeline cleaning and pressure operation.

[0005] To achieve the above technical purpose, the utility model embodiment discloses a contactless liquid taking system, which comprises a liquid taking tank, a solution storage tank and a liquid taking bottle. The liquid taking tank comprises a tank body, a gas supply device and a peristaltic pump are installed in the tank body, the pump head of the peristaltic pump is arranged on the tank body of the gas path compartment, a liquid taking bottle clamping table and a liquid taking pipe support are arranged on the same side of the tank body of the pump head, the liquid taking pipe support is located above the liquid taking bottle clamping table, the liquid taking bottle is clamped on the liquid taking bottle clamping table, the solution storage tank is communicated with the gas supply device through a gas supply pipe, a liquid taking pipe is arranged in the bottom of the solution storage tank, the middle part of the liquid taking pipe is wound around the pump head of the peristaltic pump, and the free end of the liquid taking pipe is arranged behind the liquid taking pipe support and connected with the liquid taking bottle in a sealed manner.

[0006] Further, the utility model discloses a kind of non-contact liquid taking systems, wherein, the liquid taking bottle clamping table includes support plate and clamping plate, the support plate is horizontally welded on the box, the clamping plate is arc clamping plate, the arc clamping plate is set to multiple, multiple The arc clamping plate is circumferentially distributed, the liquid taking bottle is inserted into the space surrounded by multiple arc clamping plates.

[0007] Further, the utility model discloses a kind of non-contact liquid taking systems, wherein, liquid taking pipe support includes support column and support ring, one end of the support column is welded with the box, the other end of support column is welded with the outer ring of the support ring, the liquid taking pipe is worn in the support ring.

[0008] Further, the utility model discloses a kind of non-contact liquid taking systems, wherein, the gas supply device includes gas storage tank, pressure reducing valve, gas supply solenoid valve, gas supply stop valve and gas supply pipe joint, inert gas with pressure is filled in the gas storage tank, the gas supply interface of gas storage tank is connected with the input end of pressure reducing valve, the output end of pressure reducing valve and the input end of gas supply solenoid valve are connected, the output end of gas supply solenoid valve and the input end of gas supply stop valve are connected, the output end of gas supply stop valve and the gas supply pipe joint are connected, and the gas supply pipe joint is fixed on the box.

[0009] Further, the utility model discloses a kind of non-contact liquid taking systems, wherein, pressure transmitter is installed between the gas storage tank and pressure reducing valve, and gas flowmeter is installed between pressure reducing valve and gas supply solenoid valve.

[0010] Further, the utility model discloses a kind of non-contact liquid taking systems, wherein, the gas supply device further includes air supplement stop valve, air supplement solenoid valve and air supplement pipe joint, the gas storage tank is vertically arranged, the gas supply interface of gas storage tank is arranged at the upper end of gas storage tank, the lower end of gas storage tank is provided with air supplement interface, the output end of air supplement stop valve is connected with air supplement interface, the input end of air supplement stop valve is connected with the output end of air supplement solenoid valve, the input end of air supplement solenoid valve is connected with the air supplement pipe joint, and the air supplement pipe joint is arranged on the box.

[0011] Further, the utility model discloses a kind of non-contact liquid taking systems, wherein, the box is the box of cylindrical with front and rear sides open, front door body is hinged to the front side of box, rear door body is hinged to the rear side of box, the middle part of box is equipped with partition, electrical compartment is formed between the front door body and partition, gas path compartment is formed between rear door body and partition, gas supply device is installed in the gas path compartment, PLC automatic control device is installed in the electrical compartment, the control panel of peristaltic pump is electrically connected with PLC automatic control device, the electromagnetic coil of gas supply solenoid valve is electrically connected with PLC automatic control device, the electromagnetic coil of air supplement solenoid valve is electrically connected with PLC automatic control device, the output interface of pressure transmitter is electrically connected with PLC automatic control device, and the output interface of gas flowmeter is electrically connected with PLC controller.

[0012] Further, the utility model discloses a kind of contactless liquid taking systems, wherein, the PLC automatic control device includes PLC controller, touch display screen, relay group and power supply, the PLC controller, relay group and power supply are all installed on the mounting plate fixed to partition, the touch display screen is installed on front door body, the power supply includes lithium battery and DC stabiliser, the output of lithium battery is connected with the input of DC stabiliser, the positive output of DC stabiliser is as the positive pole of power supply, the negative output of DC stabiliser is as the negative pole of power supply, the PLC controller and touch display screen are connected between the positive pole and negative pole of power supply, the touch display screen is connected with PLC controller signal, the PLC controller is electrically connected with the drive board of peristaltic pump, the electromagnetic coil of gas supply solenoid valve and the electromagnetic coil of air supplement solenoid valve respectively by relay group, for controlling the start-stop of peristaltic pump, the on-off of gas supply solenoid valve and air supplement solenoid valve;The output interface of gas flowmeter and pressure transmitter is electrically connected with PLC controller and shows flow and pressure data respectively by touch display screen.

[0013] Further, the utility model discloses a kind of contactless liquid taking systems, wherein, the relay group includes first relay, second relay and third relay, the coil first end of first relay is connected with the negative pole of power supply, the coil second end of first relay is connected with the first end of PLC controller's first output terminal 2M-1, the second end of PLC controller's first output terminal 2M-1 is connected with the positive pole of power supply, the electromagnetic coil first end of gas supply solenoid valve is connected with the negative pole of power supply, the electromagnetic coil second end of gas supply solenoid valve is connected with the first end of first relay's normally open contact, the second end of first relay's normally open contact is connected with the positive pole of power supply;The coil first end of second relay is connected with the negative pole of power supply, the coil second end of second relay is connected with the first end of PLC controller's second output terminal 2M-2, the second end of PLC controller's second output terminal 2M-2 is connected with the positive pole of power supply, the electromagnetic coil first end of air supplement solenoid valve is connected with the negative pole of power supply, the electromagnetic coil second end of air supplement solenoid valve is connected with the first end of second relay's normally open contact, the second end of second relay's normally open contact is connected with the positive pole of power supply;The coil first end of third relay is connected with the positive pole of power supply, the coil second end of third relay is connected with the first end of PLC controller's third output terminal 2M-0, the second end of PLC controller's third output terminal 2M-0 is connected with the negative pole of power supply, the first end of third relay's normally open contact is connected with the enable end EN of peristaltic pump's control board, the second end of third relay's normally open contact is connected with the ground end COM- of peristaltic pump's control board.

[0014] Further, the utility model discloses a kind of contactless liquid taking systems, wherein, the front door body is also provided with blowpipe button, pipe moistening button, liquid taking button, air supplementing button, emergency stop switch, power switch and audible and visual alarm, the first end of blowpipe button, pipe moistening button, liquid taking button and air supplementing button is connected with the negative pole of power supply, the second end of blowpipe button, pipe moistening button, liquid taking button and air supplementing button is respectively connected with the first end of the input terminal of PLC controller one by one, the second end of PLC controller input terminal is connected with the positive pole of power supply, the emergency stop switch and power switch are connected between lithium battery and DC voltage stabilizer, the first end of audible and visual alarm is connected with power supply negative pole, the second end of audible and visual alarm is connected with the first end of the fourth output terminal of PLC controller, the second end of the fourth output terminal of PLC controller is connected with the positive pole of power supply.

[0015] The difference between the utility model and the prior art is that: the utility model is provided with a liquid taking tank, a solution storage tank and a liquid taking bottle, the liquid taking tank includes a tank body, a gas supply device and a peristaltic pump are installed in the tank body, the pump head of the peristaltic pump is arranged on the tank body of the gas path compartment, a liquid taking bottle clamping table and a liquid taking pipe support are arranged on the tank body on the same side of the pump head, the liquid taking pipe support is located above the liquid taking bottle clamping table, the liquid taking bottle is clamped on the liquid taking bottle clamping table, the solution storage tank is connected with the gas supply device through a gas supply pipe, a liquid taking pipe is arranged in the solution storage tank and inserted into the bottom of the tank, the middle part of the liquid taking pipe is wound around the pump head of the peristaltic pump, and the free end of the liquid taking pipe is supported on the liquid taking pipe support and sealedly connected with the liquid taking bottle, thereby forming a contactless liquid taking system. In actual use, only one end of the gas supply pipe needs to be connected with the gas supply device, the other end needs to be connected with the solution storage tank, one end of the liquid taking pipe needs to be connected with the solution storage tank, and the other end needs to be inserted into the liquid taking bottle by winding around the pump head of the peristaltic pump and guiding by the liquid taking pipe support, and the solution in the solution storage tank can be delivered into the liquid taking bottle by starting the peristaltic pump and the gas supply device, thereby realizing contactless liquid taking and effectively avoiding the risk of pipeline cleaning and pressure operation in the traditional liquid taking mode. This feature makes the device have high application value in high-risk fields such as biomedicine and chemical experiments. Users only need to perform simple operations, without the need for complicated manual operations. This feature not only improves work efficiency, but also reduces the labor intensity of operators. The device has the advantages of compact structure, easy disassembly and assembly, and easy maintenance, and therefore it is suitable for liquid taking requirements in various complex environments. Whether in laboratories, factory production lines or hospital pharmacies, the contactless liquid taking device can exert its unique advantages and bring users more convenient, efficient and safe liquid taking experience. It exhibits excellent performance in improving work efficiency and ensuring operation safety. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a perspective structural schematic view of the utility model contactless liquid taking system;

[0017] Figure 2 is another angle of the three-dimensional structure of the contactless liquid taking system of the utility model;

[0018] Figure 3 is a three-dimensional structure of the contactless liquid taking system of the utility model (hides the back door body and the box body);

[0019] Figure 4 is a three-dimensional structure of the contactless liquid taking system of the utility model (hides the back door body and the box body);

[0020] Figure 5 is a three-dimensional structure of the gas supply device in the contactless liquid taking system of the utility model;

[0021] Figure 6 is a working principle diagram of the gas supply device in the contactless liquid taking system of the utility model;

[0022] Figure 7 is a wiring principle diagram of the power supply circuit in the contactless liquid taking system of the utility model;

[0023] Figure 8 is a wiring principle diagram of the peristaltic pump control board and the third relay in the contactless liquid taking system of the utility model;

[0024] Figure 9 is a wiring principle diagram of the gas flow meter and the transmitter in the contactless liquid taking system of the utility model;

[0025] Figure 10 is a wiring principle diagram of the blowing pipe button, the pipe lubricating button, the liquid taking button and the air supplementing button in the contactless liquid taking system of the utility model;

[0026] Figure 11 is a wiring principle diagram of the gas supply electromagnetic valve and the first relay in the contactless liquid taking system of the utility model;

[0027] Figure 12 is a wiring principle diagram of the air supplementing electromagnetic valve and the second relay in the contactless liquid taking system of the utility model;

[0028] Figure 13 is a wiring principle diagram of the audible and visual alarm in the contactless liquid taking system of the utility model. DETAILED DESCRIPTION

[0029] The contactless liquid taking system of the utility model is explained and described in detail below in combination with the drawings of the specification.

[0030] As Figures 1-4The utility model discloses a kind of non-contact liquid taking systems, including liquid taking tank, solution storage tank 100 and liquid taking bottle 200, liquid taking tank includes box 1, gas supply device 3 and peristaltic pump 7 are installed in box 1, the pump head of peristaltic pump 7 is set on the box 1 of gas path storehouse, the box 1 of same side of pump head is equipped with liquid taking bottle clamping table 6 and liquid taking pipe support 5, liquid taking pipe support 5 is located above liquid taking bottle clamping table 6.Liquid taking bottle 200 is clamped on liquid taking bottle clamping table 6, solution storage tank 100 is communicated with gas supply device 3 by gas supply pipe 110, solution storage tank 100 is equipped with liquid taking pipe 120 inserted into tank bottom, the middle part of liquid taking pipe 120 is wound on the pump head of peristaltic pump 7, the free end of liquid taking pipe 120 is arranged in liquid taking pipe support 5 and is sealedly connected with liquid taking bottle 200, liquid taking bottle clamping table 6 can stably fix liquid taking bottle 200, prevent it from shaking or toppling during liquid taking process.And liquid taking pipe support 5 is located above liquid taking bottle clamping table 6, it is responsible for supporting and guiding liquid taking pipe 120 and accurately inserted into liquid taking bottle 200.In actual use, only need to connect one end of gas supply pipe 110 with gas supply device 3, the other end is connected with solution storage tank 100, one end of liquid taking pipe 120 is connected with solution storage tank 100, the other end is wound on the pump head of peristaltic pump 7 and is inserted into liquid taking bottle 200 using the guiding action of liquid taking pipe support 6, start peristaltic pump 7 and gas supply device 3 can be transported into liquid taking bottle 200 in solution storage tank 100, the solution of this design not only improves the precision and stability of liquid taking, also greatly simplifies the operation process of user.Non-contact liquid taking is realized, effectively avoid the risk of pipeline cleaning and pressure operation in traditional liquid taking mode.This feature not only improves work efficiency, also reduces the labor intensity of operator.The device has the advantages of compact structure, easy disassembly and assembly, easy maintenance, and therefore it is suitable for liquid taking demand in various complex environments.Whether it is laboratory, factory production line or hospital pharmacy and other places, non-contact liquid taking device can exert its unique advantages, and bring more convenient, efficient and safe liquid taking experience for user.In improving work efficiency, safeguarding operation safety and other aspects, it shows excellent performance.

[0031] As Figure 1As shown in the embodiment of the utility model, the liquid taking bottle clamping table 6 includes a support plate 601 and a clamping plate 602, the support plate 601 is horizontally welded on the box body 1, the clamping plate 602 is an arc-shaped clamping plate, the arc-shaped clamping plate is provided in multiple, the multiple arc-shaped clamping plates are distributed in a circle, the liquid taking bottle 200 is inserted into the space surrounded by the multiple arc-shaped clamping plates, thereby ensuring the stability of the liquid taking bottle 200 after being placed, and avoiding the risk of the liquid taking bottle 200 being poured and the solution being spilled during the liquid taking process. The liquid taking pipe support 5 includes a support column 51 and a support ring 52, one end of the support column 51 is welded with the box body 1, the other end of the support column 51 is welded with the outer ring of the support ring 52, the liquid taking pipe 120 is arranged in the support ring 52, generally, the inner diameter of the support ring 52 is slightly smaller than the outer diameter of the liquid taking pipe 120, thereby limiting the movement of the liquid taking pipe 120 by the support ring 52, and ensuring that the liquid taking pipe 120 will not slide out of the liquid taking bottle 200 during the liquid taking process.

[0032] As Figure 3 and in combination with Figure 5 As shown in the embodiment of the utility model, the gas supply device 3 includes a gas storage tank 301, a pressure reducing valve 302, a gas supply solenoid valve 303, a gas supply stop valve 304 and a gas supply pipe joint 305. The gas storage tank 301 is filled with high-pressure inert gas (such as nitrogen, argon, etc.), and these gases are stable in chemical properties and are not easy to react with other substances. The gas storage tank 301 ensures that the gas can be released quickly and stably when needed. The pressure reducing valve 302 is located between the gas storage tank 301 and the gas supply solenoid valve 303, and its main function is to adjust the high-pressure gas in the gas storage tank 301 to the low-pressure range required by the equipment. The gas supply stop valve 304 is connected after the gas supply solenoid valve 303, which is used for manually controlling the on-off of the gas supply, and the gas supply pipe joint 305 is connected after the gas supply stop valve 304, which can be quickly connected with the gas supply pipe 110.

[0033] As Figure 5 and in combination with Figure 9 As shown in the embodiment of the utility model, a pressure transmitter 306 is installed between the gas storage tank 301 and the pressure reducing valve 302, and the pressure transmitter 306 is used for monitoring the pressure inside the gas storage tank 301; a gas flow meter 307 is installed between the pressure reducing valve 302 and the gas supply solenoid valve 303, and the gas flow meter 307 is used for monitoring the gas supply flow of the gas storage tank 301.

[0034] As Figure 5As shown in the embodiment of the utility model, the gas supply device 3 further includes a gas supplement stop valve 308, a gas supplement solenoid valve 309 and a gas supplement pipe joint 310, the gas storage tank 301 is vertically arranged, the gas supply interface of the gas storage tank 301 is arranged at the upper end of the gas storage tank 301, the lower end of the gas storage tank 301 is provided with a gas supplement interface, the output end of the gas supplement stop valve 308 is connected with the gas supplement interface, the input end of the gas supplement stop valve 308 is connected with the output end of the gas supplement solenoid valve 309, the input end of the gas supplement solenoid valve 309 is connected with the gas supplement pipe joint 310, and the gas supplement pipe joint 310 is arranged on the box body 1. When gas supplement is needed, first, the gas supplement stop valve 308 is opened, the gas supplement solenoid valve 309 is made to be conductive, and the gas supplement operation of the gas storage tank 301 is carried out.

[0035] As Figure 6As shown, in order to improve the automation level of the system, the box 1 is provided as a cylindrical box 1 with front and rear openings, the front door body 11 is connected to the front opening of the box 1, the rear door body 12 is connected to the rear opening of the box 1, the middle of the box 1 is provided with a partition 13, the electrical compartment is formed between the front door body 11 and the partition 13, the gas path compartment is formed between the rear door body 12 and the partition 13, the PLC automatic control device is installed in the electrical compartment, the above-mentioned gas supply device 3 is installed in the gas path compartment, and the control panel 701 of the peristaltic pump 7 is electrically connected with the PLC automatic control device. The PLC automatic control device precisely controls the gas supply device 3 and the peristaltic pump 7, when the PLC automatic control device receives the liquid taking instruction, the PLC automatic control device will immediately start the gas supply device 3 to provide stable gas source for the peristaltic pump 7; subsequently, the peristaltic pump 7 starts to work under the driving of the gas source, the pump head precisely sucks the liquid in the solution storage tank 100 to be taken, and the liquid is transported to the liquid taking bottle 200 through the liquid taking pipe 120. The peristaltic pump 7 can provide an accurate control resolution of 0.1 milliliter of liquid taking, so that the user can more accurately control the liquid taking amount when taking micro-liquid, thereby improving the accuracy and reliability of the experiment. The contactless liquid taking device adopts PLC automatic control device for fully automatic control, which greatly simplifies the on-site operation process, and the user only needs to realize the automatic control of the whole liquid taking process through simple operation, without complicated manual operation. The electromagnetic coil of the gas supply electromagnetic valve 303 is electrically connected with the PLC automatic control device, and the opening and closing state of the electromagnetic valve is controlled by receiving the control signal sent by the PLC. When the PLC detects the signal that needs to supply gas, it will send an opening instruction to the gas supply electromagnetic valve 303, the electromagnetic coil is powered on, and the valve core is driven to move, so that the electromagnetic valve is opened. Conversely, when the gas supply task is completed, the PLC sends a closing instruction, the electromagnetic valve is closed, and the gas source is cut off. The quick response and accurate control of the gas supply electromagnetic valve 303 provide strong support for the automation and intelligentization of the gas supply system. When gas supply is needed, first, the gas supply stop valve 304 is opened to provide a path for the gas supply system; then, the PLC automatic control device sends an instruction to make the electromagnetic coil of the gas supply electromagnetic valve 303 powered on, and the electromagnetic valve is opened; at this time, the pressurized inert gas in the gas storage tank 301 is adjusted by the pressure reducing valve 302, flows through the gas supply electromagnetic valve 303 and the gas supply stop valve 304, and finally passes through the gas supply pipe joint 305. In this process, the PLC automatic control device accurately controls the opening time of the gas supply electromagnetic valve 303 to ensure accurate control of the gas supply amount. The gas supply device 3 cooperates with the peristaltic pump 7 to provide continuous and stable gas source, so that the peristaltic pump 7 can perform liquid taking operation according to the preset rate and rhythm. This not only improves the precision and efficiency of liquid taking, but also greatly reduces the labor intensity of the operator. The output interface of the pressure transmitter 306 is electrically connected with the PLC automatic control device. When the pressure in the gas storage tank 301 gradually decreases to the preset threshold due to consumption, the pressure transmitter 306 will quickly capture this change and transmit the signal to the PLC for display on the touch display screen 402.The compressed air is replenished into the gas tank 301 to ensure that the pressure in the gas tank 301 is always maintained in a safe and efficient range. The output interface of the gas flow meter 307 is electrically connected to the PLC controller 401. Through the gas flow meter 307, the gas supply flow at each moment can be clearly understood, and then a close relationship with the liquid taking amount is established. In the scene of liquid distribution, chemical reaction and other scenes that need to accurately control the liquid taking amount, the gas flow meter 307 can dynamically adjust the liquid taking speed according to the change of the gas supply flow, so as to ensure the stability and reliability of the liquid taking precision. The electromagnetic coil of the air replenishing electromagnetic valve 309 is electrically connected to the PLC automatic control device. When air replenishment is needed, the air replenishing stop valve 308 is first opened, and then the electromagnetic coil of the air replenishing electromagnetic valve 309 is powered on by the PLC automatic control device to open the air replenishing electromagnetic valve 309, so that the air is replenished into the gas tank 301. When the pressure in the gas tank 301 reaches the preset value, the electromagnetic coil of the air replenishing electromagnetic valve 309 is powered off by the PLC automatic control device to close the air replenishing electromagnetic valve 309, and finally the air replenishing stop valve 308 is manually closed to complete the air replenishing operation.

[0036] As shown in Figure 4 , Figure 7 , Figure 8 , Figure 11 and Figure 12 , in an embodiment of the utility model, wherein the PLC automatic control device includes PLC controller 401, touch display screen 402, relay group 8 and power supply, PLC controller 401, relay group 8 and power supply are all installed on the mounting plate fixed to the partition 13, touch display screen 402 is installed on the front door body 11, power supply includes lithium battery 404 and DC stabilizer 405, the output end of lithium battery 404 is connected with the input end of DC stabilizer 405, the positive output end of DC stabilizer 405 is as the positive pole of power supply, the negative output end of DC stabilizer 405 is as the negative pole of power supply, PLC controller 401 and touch display screen 402 are connected in parallel between the positive pole and the negative pole of power supply, touch display screen 402 is signal connected with PLC controller 401, PLC controller 401 is electrically connected with the drive board of peristaltic pump 7, the electromagnetic coil of air supply electromagnetic valve 303 and the electromagnetic coil of air replenishing electromagnetic valve 309 through relay group 8 respectively for controlling the start-stop of peristaltic pump 7, the on-off of air supply electromagnetic valve 303 and air replenishing electromagnetic valve 309, the output interface of gas flow meter and pressure transmitter 306 is electrically connected with PLC controller 401 and displays flow and pressure data respectively through touch display screen 402.

[0037] Specifically, relay group 8 includes a first relay, a second relay, and a third relay. The first terminal of the coil 801-1 of the first relay is connected to the negative terminal of the power supply, and the second terminal of the coil 801-1 is connected to the first terminal of the first output terminal 2M-1 of the PLC controller 401. The second terminal of the first output terminal 2M-1 of the PLC controller 401 is connected to the positive terminal of the power supply. The first terminal of the solenoid coil of the air supply solenoid valve 303 is connected to the negative terminal of the power supply, and the second terminal of the solenoid coil of the air supply solenoid valve 303 is connected to the first terminal of the normally open contact 801-2 of the first relay. The second terminal of the normally open contact 801-2 of the first relay is connected to the positive terminal of the power supply. The PLC controller 401 controls the opening and closing of the air supply solenoid valve 303 by controlling the energization and de-energization of the first relay coil 801-1. The first terminal of the coil 802-1 of the second relay is connected to the negative terminal of the power supply, and the second terminal of the coil 802-1 is connected to the first terminal of the second output terminal 2M-2 of the PLC controller 401. The second terminal of the second output terminal 2M-2 of the PLC controller 401 is connected to the positive terminal of the power supply. The first terminal of the solenoid coil of the air supply solenoid valve 309 is connected to the negative terminal of the power supply, and the second terminal of the solenoid coil of the air supply solenoid valve 309 is connected to the first terminal of the normally open contact 802-2 of the second relay. The second terminal of the normally open contact 802-2 of the second relay is connected to the positive terminal of the power supply. The PLC controller 401 controls the opening and closing of the air supply solenoid valve 309 by controlling the energization and de-energization of the second relay coil 802-1. The first terminal of the coil 803-1 of the third relay is connected to the positive terminal of the power supply. The second terminal of the coil 803-2 of the third relay is connected to the first terminal of the third output terminal 2M-0 of the PLC controller 401. The second terminal of the third output terminal 2M-0 of the PLC controller 401 is connected to the negative terminal of the power supply. The first terminal of the normally open contact 803-2 of the third relay is connected to the enable terminal EN of the control board 701 of the peristaltic pump 7. The second terminal of the normally open contact 803-2 of the third relay is connected to the ground terminal COM- of the control board 701 of the peristaltic pump 7. The PLC controller 401 controls whether the control board 701 of the peristaltic pump 7 is enabled or disabled by controlling the energization and de-energization of the third relay coil 803-1, thereby controlling the start and stop of the peristaltic pump 7.

[0038] Those skilled in the art will understand that the peristaltic pump 7 internally houses a control board 701 for controlling the start and stop of the peristaltic pump 7. The PLC controller 401 has multiple input terminals and multiple output terminals, such as a Siemens S7-200SMART PLC. When the terminals of the PLC controller 401 are insufficient, a PLC expansion module, such as the EMAQ04, can be used. The relay includes a coil and one or more normally open and normally closed contacts.

[0039] like Figure 1 , Figure 7 and combined Figure 10 andFigure 13 As shown in the utility model one embodiment, front door body 11 still be provided with blowpipe button 406, moisten pipe button 407, take liquid button 408, air supplement button 109, emergency stop switch 410, power switch 411 and audible and visual alarm 412. Among them, blowpipe button 406, moisten pipe button 407, take liquid button 408 and air supplement button 109 first end all with the negative pole of power connection, blowpipe button 406, moisten pipe button 407, take liquid button 408 and air supplement button 109 second end respectively with the first end of PLC controller 401 input terminal one to one corresponding connection, PLC controller 401 input terminal second end all with the positive pole of power connection. Blowpipe button 406, moisten pipe button 407, take liquid button 408 and air supplement button 109 its purpose is to PLC controller 401 input a corresponding trigger signal, when pressing blowpipe button 406, execute blowpipe operation, when pressing moisten pipe button 407, execute moisten pipe operation, when pressing take liquid button 408, execute take liquid operation, when pressing air supplement button 109, execute air supplement operation. Emergency stop switch 410 and power switch 411 are in series between lithium battery 404 and DC voltage stabilizer 405, audible and visual alarm 412 first end with power negative pole connection. When pressing power switch 411, power starts to supply, each component starts to work, when encountering emergency, can press emergency stop button, disconnect power, prevent situation to further expand. Audible and visual alarm 412 second end with the first end of PLC controller 401 fourth output terminal connection, PLC controller 401 fourth output terminal second end with the positive pole of power connection. Audible and visual alarm 412 can be in gas storage tank 301 pressure too low and too high alarm, also can be used to take liquid step after alarm.

[0040] As Figure 6 The utility model one kind no contact type liquid taking system running process as shown below:

[0041] S1.press power switch 411 and start, wait for touch control display screen 402 to display completely;

[0042] S2.connect one end of take liquid pipe 120 to solution storage tank 100 to be taken liquid, and the other end of take liquid pipe 120 is wound on the pump head of peristaltic pump 7;

[0043] S3.take liquid bottle 200 is clamped on take liquid bottle clamping table 6, and take liquid pipe 120 of winding peristaltic pump 7's pump head and take liquid pipe support 5 is connected with take liquid bottle 200;

[0044] S4.install gas supply pipe 110 on gas supply pipe joint 305;

[0045] S5.open gas supply stop valve 304 after opening rear door body 12;

[0046] S6. Press the blow pipe button 406, and the PLC controller 401 controls the air supply electromagnetic valve 303 to open for the first countdown time, and the air supply pipe 110 is purged;

[0047] S7. After the purge is completed, the other end of the air supply pipe 110 is inserted into the bottom of the solution tank 100 to be taken out of the solution;

[0048] S8. Press the pipe lubrication button 407, and the PLC controller 401 controls the air supply electromagnetic valve 303 and the peristaltic pump 7 to open simultaneously for the second countdown time, and the solution in the solution tank 100 is pumped out to lubricate the pipe and delivered to the liquid taking bottle 200;

[0049] S9. The liquid taking bottle 200 used in the pipe lubrication process is sealed, and a new liquid taking bottle 200 is replaced;

[0050] S10. Press the liquid taking button 408, and the PLC controls the air supply electromagnetic valve 303 and the peristaltic pump 7 to open simultaneously for the third countdown time, and then the liquid taking bottle 200 is sealed. If liquid taking is needed again, the liquid taking button 408 is pressed again after replacing the liquid taking bottle 200, and the liquid taking is repeated;

[0051] S11. The liquid pipe in the solution tank 100 is pulled out upwards, so that the lower end of the liquid taking pipe 120 is higher than the liquid level of the solution in the solution tank 100;

[0052] S12. Press the liquid discharge button, and the PLC controller 401 controls the air supply electromagnetic valve 303 and the peristaltic pump 7 to open simultaneously for the fourth countdown time, and then the liquid taking bottle 200 is sealed, and the liquid taking pipe 120 and the air supply pipe 110 are removed;

[0053] S13. The air supply stop valve 304 is closed.

[0054] The first countdown time, the second countdown time, the third countdown time and the fourth countdown time can be adjusted according to actual conditions. In this embodiment, the first countdown time is selected to be 30 seconds. The second countdown time, the third countdown time and the fourth countdown time are related to the capacity of the liquid taking bottle 200. In this embodiment, the second countdown time, the third countdown time and the fourth countdown time are selected to be 17 seconds.

[0055] The air tank 301 gas supplementing step includes:

[0056] S1.1 When the PLC control detects that the pressure of the air tank 301 is lower than the first pressure value through the pressure transmitter 306, the gas supplementing step is performed;

[0057] S1.2 Before gas supplementing, the gas supplementing pipe is connected to the gas supplementing pipe interface outside the box body 1;

[0058] S1.3 Open the gas supplementing stop valve 308 after opening the rear door body 12;

[0059] S1.4 press the air supplement button 109, the air supply electromagnetic valve 303 is controlled by the PLC controller 401 to keep open state, the air supplement is carried out to the air tank 301, and the pressure of the air tank 301 can be monitored in real time through the touch display screen 402;

[0060] S1.5 when the PLC control detects that the pressure of the air tank 301 rises to the second pressure value through the pressure transmitter 306, the air supply electromagnetic valve 303 is closed by the PLC controller 401, and the alarm signal is sent by the audible and visual alarm 412 controlled by the PLC controller 401;

[0061] S1.6 close the air supplement stop valve 308, and close the rear door body 12.

[0062] The first pressure value and the second pressure value can be adjusted according to actual conditions, and in the embodiment, the first pressure value is preferably 0.15MPa, and the second pressure value is preferably 1.9MPa.

[0063] In the embodiment, the automatic air supplement of the air tank 301 is realized, and through the automatic detection and response mechanism, not only the air supplement efficiency is improved, but also the stability and safety of the pressure in the air tank 301 are ensured.The internal pressure change of the air tank 301 can be clearly seen through the touch display screen, and through the real-time detection and accurate control mode, the stability and accuracy of the air supplement process are ensured.

[0064] In the description of the utility model, it is understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, a particular orientation and operation, and therefore cannot be understood as limiting the utility model.

[0065] In the utility model, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, can be fixedly connected, or can be detachably connected, or can be integrated;Can be mechanically connected, or can be electrically connected;It can be directly connected, or indirectly connected through an intermediate medium, it can be the communication or interaction relationship between two elements, unless otherwise explicitly limited.The above-mentioned terms in the utility model can be understood according to the specific meaning according to the specific situation by those skilled in the art.

[0066] In addition, the terms "first", "second", "third", "fourth", "fifth", "sixth", "seventh" and "eighth" are only used for descriptive purpose and are not to be construed as indicating or implying relative importance or a specific number of the technical features indicated. Thus, the features defined with "first", "second", "third", "fourth", "fifth", "sixth", "seventh" and "eighth" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, for example, two, three, etc., unless otherwise explicitly and specifically limited.

[0067] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Any modification, equivalent replacement and simple improvement made on the essential content of the present application shall be included in the protection scope of the present application.

Claims

1. A touchless liquid retrieval system, characterized by: The application relates to a liquid taking device, which comprises a liquid taking tank, a solution storage tank and a liquid taking bottle, wherein the liquid taking tank comprises a tank body, a gas supply device and a peristaltic pump are arranged in the tank body, the pump head of the peristaltic pump is arranged on the tank body of a gas path compartment, a liquid taking bottle clamping table and a liquid taking pipe support are arranged on the same side of the tank body, the liquid taking pipe support is arranged above the liquid taking bottle clamping table, the liquid taking bottle is clamped on the liquid taking bottle clamping table, the solution storage tank is communicated with the gas supply device through a gas supply pipe, a liquid taking pipe is arranged in the solution storage tank and inserted into the bottom of the solution storage tank, the middle part of the liquid taking pipe is arranged around the pump head of the peristaltic pump, and the free end of the liquid taking pipe is arranged on the liquid taking pipe support and is sealedly connected with the liquid taking bottle.

2. The touchless liquid retrieval system of claim 1, wherein: The liquid taking bottle clamping table comprises a support plate and clamping plates, the support plate is horizontally welded on the tank body, the clamping plates are arc-shaped clamping plates, a plurality of the arc-shaped clamping plates are arranged in a circumferential distribution mode, and the liquid taking bottle is inserted into a space surrounded by the plurality of arc-shaped clamping plates.

3. The touchless liquid retrieval system of claim 2, wherein: The liquid taking pipe support comprises a support column and a support ring, one end of the support column is welded with the tank body, the other end of the support column is welded with the outer ring of the support ring, and the liquid taking pipe is arranged in the support ring.

4. The touchless liquid retrieval system of claim 3, wherein: The gas supply device comprises a gas storage tank, a pressure reducing valve, a gas supply electromagnetic valve, a gas supply stop valve and a gas supply pipe joint, the gas storage tank is filled with pressure inert gas, the gas supply interface of the gas storage tank is connected with the input end of the pressure reducing valve, the output end of the pressure reducing valve is connected with the input end of the gas supply electromagnetic valve, the output end of the gas supply electromagnetic valve is connected with the input end of the gas supply stop valve, the output end of the gas supply stop valve is connected with the gas supply pipe joint, and the gas supply pipe joint is fixed on the tank body.

5. The touchless liquid retrieval system of claim 4, wherein: A pressure transmitter is arranged between the gas storage tank and the pressure reducing valve, and a gas flow meter is arranged between the pressure reducing valve and the gas supply electromagnetic valve.

6. The touchless liquid retrieval system of claim 5, wherein: The gas supply device further comprises a gas supplement stop valve, a gas supplement electromagnetic valve and a gas supplement pipe joint, the gas storage tank is vertically arranged, the gas supply interface of the gas storage tank is arranged on the upper end of the gas storage tank, the lower end of the gas storage tank is provided with a gas supplement interface, the output end of the gas supplement stop valve is connected with the gas supplement interface, the input end of the gas supplement stop valve is connected with the output end of the gas supplement electromagnetic valve, the input end of the gas supplement electromagnetic valve is connected with the gas supplement pipe joint, and the gas supplement pipe joint is arranged on the tank body.

7. The touchless liquid retrieval system of claim 6, wherein: The tank body is a cylindrical tank body with front and rear openings, a front door body is hinged to the front side of the tank body, a rear door body is hinged to the rear side of the tank body, a partition plate is arranged in the middle of the tank body, an electric compartment is formed between the front door body and the partition plate, a gas path compartment is formed between the rear door body and the partition plate, the gas supply device is arranged in the gas path compartment, a PLC automatic control device is arranged in the electric compartment, the control panel of the peristaltic pump is electrically connected with the PLC automatic control device, the electromagnetic coil of the gas supply electromagnetic valve is electrically connected with the PLC automatic control device, the electromagnetic coil of the gas supplement electromagnetic valve is electrically connected with the PLC automatic control device, the output interface of the pressure transmitter is electrically connected with the PLC automatic control device, and the output interface of the gas flow meter is electrically connected with the PLC controller.

8. The touchless liquid retrieval system of claim 7, wherein: The PLC automatic control device comprises a PLC controller, a touch display screen, a relay group and a power supply, the PLC controller, the relay group and the power supply are all installed on a mounting plate fixed to a partition plate, the touch display screen is installed on a front door body, the power supply comprises a lithium battery and a DC stabilizer, an output end of the lithium battery is connected with an input end of the DC stabilizer, a positive output end of the DC stabilizer serves as a positive pole of the power supply, and a negative output end of the DC stabilizer serves as a negative pole of the power supply, the PLC controller and the touch display screen are connected in parallel between the positive and negative poles of the power supply, the touch display screen is signal connected with the PLC controller, the PLC controller is electrically connected with a drive board of a peristaltic pump, an electromagnetic coil of a gas supply electromagnetic valve and an electromagnetic coil of a gas supplement electromagnetic valve through the relay group, for controlling start and stop of the peristaltic pump, and on-off of the gas supply electromagnetic valve and the gas supplement electromagnetic valve; output interfaces of the gas flow meter and the pressure transmitter are electrically connected with the PLC controller and display flow and pressure data through the touch display screen respectively.

9. The touchless liquid retrieval system of claim 8, wherein: The relay group comprises a first relay, a second relay and a third relay, a coil first end of the first relay is connected with a negative pole of the power supply, a coil second end of the first relay is connected with a first end of a first output terminal 2M-1 of the PLC controller, a second end of the first output terminal 2M-1 of the PLC controller is connected with a positive pole of the power supply, an electromagnetic coil first end of the gas supply electromagnetic valve is connected with the negative pole of the power supply, an electromagnetic coil second end of the gas supply electromagnetic valve is connected with a first end of a normally open contact of the first relay, a second end of the normally open contact of the first relay is connected with the positive pole of the power supply; a coil first end of the second relay is connected with the negative pole of the power supply, a coil second end of the second relay is connected with a first end of a second output terminal 2M-2 of the PLC controller, a second end of the second output terminal 2M-2 of the PLC controller is connected with the positive pole of the power supply, an electromagnetic coil first end of the gas supplement electromagnetic valve is connected with the negative pole of the power supply, an electromagnetic coil second end of the gas supplement electromagnetic valve is connected with a first end of a normally open contact of the second relay, a second end of the normally open contact of the second relay is connected with the positive pole of the power supply; a coil first end of the third relay is connected with the positive pole of the power supply, a coil second end of the third relay is connected with a first end of a third output terminal 2M-0 of the PLC controller, a second end of the third output terminal 2M-0 of the PLC controller is connected with the negative pole of the power supply, a first end of a normally open contact of the third relay is connected with an enable end EN of a control board of the peristaltic pump, and a second end of the normally open contact of the third relay is connected with a ground end COM- of the control board of the peristaltic pump.

10. The touchless liquid retrieval system of claim 9, wherein: The front door body is further provided with a blowing pipe button, a pipe moistening button, a liquid taking button, a gas supplementing button, an emergency stop switch, a power switch and an audible and visual alarm, the first ends of the blowing pipe button, the pipe moistening button, the liquid taking button and the gas supplementing button are connected with the negative pole of the power supply, the second ends of the blowing pipe button, the pipe moistening button, the liquid taking button and the gas supplementing button are connected with the first ends of the input terminals of the PLC controller in one-to-one correspondence, the second ends of the input terminals of the PLC controller are connected with the positive pole of the power supply, the emergency stop switch and the power switch are connected in series between the lithium battery and the DC stabilizer, the first end of the audible and visual alarm is connected with the negative pole of the power supply, the second end of the audible and visual alarm is connected with the first end of the fourth output terminal of the PLC controller, and the second end of the fourth output terminal of the PLC controller is connected with the positive pole of the power supply.

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