CN114772089A - Liquid material storage tank and sampling method - Google Patents

Abstract

The application provides a liquid material storage tank and a sampling method. The liquid material storage tank comprises a tank body, a sampling device, a driving device and a collecting device. The sampling device comprises a sampling tube. The sampling tube is arranged in the tank body and is inserted in the liquid material. The sampling tube is provided with a sampling port. The driving device is arranged at the top of the tank body and connected with the sampling tube. The driving device comprises a motor and a reel. The collecting device is connected with the sampling tube. The sampling method comprises the step of driving the sampling tube to move to a liquid level height corresponding to a position to be sampled. Collecting the liquid material collected by the sampling tube. So, it is rotatory through motor drive reel to the reel drives the sampling tube and goes up and down, can make the sample connection be located the arbitrary liquid level height sample of liquid material, also can gather the combination sample after the liquid material of different liquid level heights mixes according to arbitrary proportion, compares in the buoyancy through the float and drives the scheme that the sampling tube goes up and down, and the liquid material storage tank of this application's sampling precision is high, and simple structure, easily installation and maintenance.

Description

Liquid material storage tank and sampling method

Technical Field

The application relates to the field of storage tank equipment, in particular to a liquid material storage tank and a sampling method.

Background

In the industries of petrochemical industry, food and medicine and the like, in order to master the properties of liquid materials in a liquid material storage tank and ensure that the quality of the liquid materials is qualified, a sampler under the tank is adopted to carry out sample collection at different liquid level heights.

In the related art, the sampling device under the tank drives the sampling tube in the tank body to float up and down through the buoyancy of the floater, the floating tube or the floating plate in the tank body so as to collect samples at different liquid level heights. Thus, the sampling precision error is large, and the structure is complex.

Disclosure of Invention

The application provides a liquid material storage tank and a sampling method for improving sampling precision.

The application provides a liquid material storage tank, wherein includes:

the tank body is used for storing liquid materials;

the sampling device comprises a sampling tube, the sampling tube is arranged in the tank body and is inserted into the liquid material, and the sampling tube is provided with a sampling port;

the driving device is arranged at the top of the tank body and connected with the sampling tube, and the driving device comprises a motor and a reel; the motor includes a drive shaft; one end of the reel is connected with the driving shaft, and the other end of the reel is connected with the sampling tube; the motor is used for driving the reel to rotate, and the reel drives the sampling tube to move up and down so as to adjust the liquid level height of the sampling port at the liquid material;

and the collecting device is connected with the sampling tube and is used for collecting the liquid material of the sampling tube.

Optionally, the driving device further comprises a rope, one end of the rope is connected with the reel, and the other end of the rope is connected with the sampling tube.

Optionally, the sampling pipe is arranged along the height direction of the tank body and is the same as the stretching direction of the rope.

Optionally, the sampling tube is flexible body, sampling device is still including receiving a tub of part, receive tub of part with the sampling tube is connected, and locates the below of sampling tube, receive tub of part and be used for curling and accomodate the part the sampling tube.

Optionally, the sampling tube includes a leading-out port, and the leading-out port is closer to the bottom of the tank body than the sampling port; the collecting device comprises a sample collecting bottle and a flow guide pipe; the sample collection bottle is arranged on the outer side of the tank body; the first end intercommunication of honeycomb duct receive the appearance bottle, the second end intercommunication of honeycomb duct jar body and with the delivery port intercommunication is used for the transmission the sampling tube is gathered liquid material extremely receive the appearance bottle.

Optionally, the collecting device includes a control valve, is located outside the tank body, and is arranged in the diversion pipe, and is used for controlling the circulation or the blockage of the liquid material in the diversion pipe.

Optionally, the collecting device includes a first pressurizing device disposed in the flow guide pipe, and is configured to pressurize the liquid material in the flow guide pipe.

Optionally, the collection device includes the buffer tank, locates the honeycomb duct, and is located first supercharging equipment with between the appearance bottle is received, be used for the buffering in the honeycomb duct the velocity of flow of liquid material.

Optionally, the collecting device includes a flow meter, locates the honeycomb duct, just the flow meter compare in the delivery port is close to receive the appearance bottle setting, be used for measuring the honeycomb duct transmit to receive the appearance bottle the capacity of liquid material.

Optionally, the liquid material storage tank includes a backflow device, and the backflow device is communicated between the collecting device and the tank body, and is configured to backflow the liquid material at the previous liquid level height flowing into the collecting device into the tank body before collecting the liquid material at the next liquid level height.

Optionally, the backflow device includes a backflow pipe and the second pressurization device, wherein one end of the backflow pipe is communicated with the sample collection bottle, and the other end of the backflow pipe is communicated with the tank body; the second supercharging equipment is arranged on the sample collection bottle.

Optionally, the return device comprises a first control valve and a return pipe; the first control valve comprises an inlet end, a first outlet end and a second outlet end, wherein the inlet end is connected with the first end of the flow guide pipe; the first outlet end is communicated with the sample receiving bottle; one end of the return pipe is connected with the second outlet end, and the other end of the return pipe is communicated with the tank body.

The application also provides a sampling method of the liquid material storage tank, wherein a sampling tube is arranged in the liquid material storage tank and is inserted into the liquid material in the liquid material storage tank; the top of the liquid material storage tank is provided with a motor and a reel, and the motor comprises a driving shaft; one end of the reel is connected with the driving shaft, and the other end of the reel is connected with the sampling tube; the sampling method comprises the following steps:

according to the position of the liquid material to be sampled, the reel is driven to rotate by the motor so as to drive the sampling pipe to move to the liquid level height corresponding to the position to be sampled;

and collecting the liquid material collected by the sampling tube to obtain a sample liquid material.

Optionally, collecting the liquid material collected by the sampling tube to obtain a sample liquid material, includes:

collecting the sample liquid material at a first liquid level height;

moving the sampling tube to a second level;

returning a portion of the sample liquid material remaining in the sampling tube at the first level height to the liquid material storage tank;

collecting sample liquid material at the second liquid level.

The application provides a liquid material storage tank, including a jar body, sampling device, drive arrangement and collection device. The sampling device comprises a sampling tube. The sampling tube is arranged in the tank body and inserted into the liquid material. The sampling tube is provided with a sampling port. The driving device is arranged at the top of the tank body and connected with the sampling tube. The driving device comprises a motor and a reel. The collecting device is connected with the sampling tube. So, it is rotatory through motor drive reel to the reel drives the sampling tube and goes up and down, can make the sample connection be located the arbitrary liquid level height sample of liquid material, also can gather the combination sample after the liquid material of different liquid level heights mixes according to arbitrary proportion, compares in the buoyancy through the float and drives the scheme that the sampling tube goes up and down, and the liquid material storage tank of this application's sampling precision is high, and simple structure, easily installation and maintenance.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.

Drawings

FIG. 1 is a schematic diagram of an embodiment of a liquid material storage tank of the present application;

FIG. 2 is a schematic structural diagram of another embodiment of a liquid material storage tank of the present application;

FIG. 3 is a diagram illustrating the steps of the sampling method for a liquid material storage tank of the present application;

fig. 4 is a detailed step diagram of an embodiment of a sampling method for a liquid material storage tank according to the present application.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of devices consistent with certain aspects of the present application, as detailed in the appended claims.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this application belongs. The use of "first," "second," and similar terms in the description and in the claims does not indicate any order, quantity, or importance, but rather is used to distinguish one element from another. Also, the use of the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one. "plurality" or "a number" means two or more. Unless otherwise indicated, "front," "back," "lower," and/or "upper," and the like are for convenience of description, and are not limited to one position or one spatial orientation. The word "comprising" or "comprises", and the like, means that the element or item listed as preceding "comprising" or "includes" covers the element or item listed as following "comprising" or "includes" and its equivalents, and does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. As used in this specification and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

The application provides a liquid material storage tank, including a jar body, sampling device, drive arrangement and collection device. The tank body is used for storing liquid materials. The sampling device comprises a sampling tube. The sampling tube is arranged in the tank body and inserted into the liquid material. The sampling tube is provided with a sampling port. The driving device is arranged at the top of the tank body and is connected with the sampling tube. The driving device comprises a motor and a reel. The motor includes a drive shaft. One end of the reel is connected with the driving shaft, and the other end of the reel is connected with the sampling tube. The motor is used for driving the reel to rotate, and drives the sampling tube to move up and down through the reel so as to adjust the liquid level height of the sampling opening, which is positioned on the liquid material. The collecting device is connected with the sampling tube and used for collecting the liquid material of the sampling tube. So, it is rotatory through motor drive reel to the reel drives the sampling tube and goes up and down, can make the sample connection be located the arbitrary liquid level height sample of liquid material, also can gather the combination sample after the liquid material of different liquid level heights mixes according to arbitrary proportion, compares in the buoyancy through the float and drives the scheme that the sampling tube goes up and down, and the liquid material storage tank of this application's sampling precision is high, and simple structure, easily installation and maintenance.

The application also provides a sampling method of the liquid material storage tank. A sampling pipe is arranged in the liquid material storage tank and is inserted into the liquid material in the liquid material storage tank; the motor and the reel are arranged on the top of the motor arranged outside the liquid material storage tank, and the motor comprises a driving shaft; one end of the reel is connected with the driving shaft, and the other end of the reel is connected with the sampling tube. The sampling method comprises the step of driving the reel to rotate through the motor according to the position to be sampled of the liquid material so as to drive the sampling tube to move to the liquid level height corresponding to the position to be sampled. And collecting the liquid material collected by the sampling tube to obtain a sample liquid material.

Fig. 1 is a schematic structural diagram of an embodiment of a liquid material storage tank 1 provided in the present application. As shown in fig. 1, a liquid material storage tank 1 includes a tank body 2, a sampling device 3, a driving device 4 and a collecting device 5. The tank 2 is used for storing liquid materials 6. The liquid material 6 can be liquid chemical substances such as petroleum, aviation oil and the like. The sampling device 3 comprises a sampling tube 8. The sampling tube 8 is arranged in the tank body 2 and used for collecting the liquid material 6 with any liquid level and inserting the liquid material 6, and the sampling tube 8 is provided with a sampling port 9. The liquid material 6 at any liquid level flows into the sampling pipe 8 through the sampling port 9.

The driving device 4 is disposed on the top of the tank 2 and is not limited thereto, and is connected to the sampling tube 8. The drive means 4 comprise a motor 10 and a reel 11. The motor 10 includes a drive shaft 12. The reel 11 is connected at one end to the drive shaft 12 and at the other end to the sampling tube 8. The motor 10 is used for driving the reel 11 to rotate, and the reel 11 drives the sampling tube 8 to move up and down so as to adjust the liquid level of the sampling opening 9 on the liquid material 6. The collecting device 5 is connected with the sampling tube 8 and is used for collecting the liquid material 6 of the sampling tube 8. In this embodiment, the reel 11 is powered for rotation by a motor 10. The drive shaft 12 drives the reel 11 in either a clockwise or counterclockwise rotation. When rotating clockwise, the reel 11 can drive the sampling tube 8 to descend; in the case of a counterclockwise rotation, the reel 11 can bring the sampling tube 8 up. Alternatively, the reel 11 may drive the sampling tube 8 to rise when rotating clockwise; in the case of a counterclockwise rotation, the reel 11 can bring the sampling tube 8 down. Liquid material 6 flows into sampling tube 8 back through sample connection 9, further collects through the collection device 5 outside the jar body 2. In this way, the sampling opening 9 of the sampling tube 8 is positioned at any level of the liquid material 6 for sampling. Also can gather the combination sample after liquid material 6 of different liquid level height mixes according to arbitrary proportion, compare in the scheme that the buoyancy through the float drove the sampling tube and go up and down, the liquid material storage tank 1's of this application sampling precision is high, and simple structure, easy installation maintenance. In some embodiments, the motor 10 comprises a servo motor.

In some embodiments, the driving means 4 further comprise a cord 31, one end of the cord 31 being connected to the reel 11 and the other end being connected to the sampling tube 8. In this embodiment, the reel 11 is connected to the sampling tube 8 by a cord 31. The reel 11 is used for driving the sampling tube 8 to move up and down through the winding and unwinding rope 31. Therefore, the lifting movement driving the sampling tube 8 has good effect, simple structure and convenient operation. In some embodiments, the rope 31 comprises a steel cord.

In some embodiments, the sampling tube 8 is disposed along the height direction of the can body 2, and the same as the stretching direction of the rope 31. In this embodiment, the direction that the sampling tube 8 was inserted in the liquid material 6 is the same with the direction of height of the jar body 2, and the liquid material 6 flows along vertical direction in the sampling tube 8 like this, is favorable to the transmission of liquid material 6 smoothly. And, the length direction of sampling tube 8 is unanimous with the tensile direction of rope 31 for rope 31 keeps moving in vertical direction, and it can be laborsaving to drive sampling tube 8 like this, and convenient operation.

In some embodiments, the sampling tube 8 is a flexible tube, and the sampling device 3 further includes a tube receiving member 13, the tube receiving member 13 is connected to the sampling tube 8 and disposed below the sampling tube 8, and the tube receiving member 13 is used for curling and receiving a portion of the sampling tube 8. During the lifting of the sampling tube 8 within the liquid material 6, deviations from the vertical direction may occur. Especially when sampling tube 8 descends highly great, can cause the partial sampling tube 8 that is close to jar body 2 bottoms to curl and twine, be unfavorable for like this the transmission of the liquid material 6 in the sampling tube 8 smooth and easy to can have an influence to the sampling precision of liquid material 6. Consequently, set up in the below of sampling tube 8 and receive a tub part 13, should receive tub part 13 and can collect curling partial sampling tube 8 for insert partial sampling tube 8 in liquid material 6 and can straighten, and can keep always with the direction of height of jar body 2 all the time, be favorable to intraductal liquid material 6's circulation smooth and easy. Moreover, the sampling tube 8 is a flexible tube, which is easy to deform and convenient for the tube collecting part 13 to curl. In some embodiments, the sampling tube 8 comprises stainless steel, so that the sampling tube 8 is not susceptible to corrosion and has a long service life. In some embodiments, the pipe take-up member 13 is a spool.

In some embodiments, the sampling tube 8 comprises a lead-out port 14, the lead-out port 14 being closer to the bottom of the tank 2 than the sampling port 9; the collecting device 5 comprises a sample collecting bottle 15 and a guide pipe 16; the sample collection bottle 15 is arranged on the outer side of the tank body 2; the first end of honeycomb duct 16 communicates and receives appearance bottle 15, and the second end of honeycomb duct 16 communicates jar body 2 and communicates with export 14 for the liquid material 6 to receiving appearance bottle 15 of transmission sampling tube 8 collection. The export 14 is located the bottom of sampling tube 8, and liquid material 6 flows into sampling tube 8 through sample connection 9, is transporting to honeycomb duct 16 through export 14, and then transports to the sampling bottle 15 in, collects the sample completion of a liquid level height like this. So, simple structure collects the sample precision high. In some embodiments, the tank 2 includes a first aperture portion 17, and the second end of the draft tube 16 communicates with the tank 2 through the first aperture portion 17. In some embodiments, the first opening 17 is sealed with the draft tube 16 to prevent the liquid material 6 in the tank 2 from leaking.

In some embodiments, the collecting device 5 comprises a control valve 18, located outside the tank 2 and arranged in the flow duct 16, for controlling the passage or the blockage of the liquid material 6 inside the flow duct 16. The conduction pipe 16 is controlled to be opened or closed by a control valve 18. Specifically, when the height of the sampling port 9 is adjusted from the previous liquid level to the next liquid level, the control valve 18 controls the flow guide pipe 16 to be closed, so as to prevent the liquid material 6 from being continuously transmitted from the sampling pipe 8 to the flow guide pipe 16 in the process of adjusting the height of the sampling port 9, and further to prevent the sampling precision from being influenced. When the sampling port 9 is adjusted to the next liquid level, the control valve 18 controls the conduction of the flow guide tube 16 to collect the sample at the next liquid level. In some embodiments, the control valve 18 comprises a solenoid-operated valve.

In some embodiments, the collecting device 5 comprises a first pressurising means 19 provided in the draft tube 16 for pressurising the liquid material 6 within the draft tube 16. The first pressurizing device 19 pressurizes the liquid material 6 in the draft tube 16 to increase the flow rate of the liquid material 6 in the draft tube 16, thereby increasing the efficiency of the sample collection from the vial 15. In some embodiments, the first pressure boosting device 19 comprises a hydraulic pump.

In some embodiments, the collecting device 5 comprises a buffer tank 20 disposed in the flow guide tube 16 and located between the first pressurizing device 19 and the sampling bottle 15 for buffering the flow rate of the liquid material 6 in the flow guide tube 16. After the liquid material 6 in the draft tube 16 is pressurized, the liquid material is buffered by the buffer tank 20, which is beneficial to stable transmission of the liquid material 6.

In some embodiments, the collecting device 5 comprises a flow meter 21 disposed on the flow guide tube 16, and the flow meter 21 is disposed near the sample bottle 15 compared to the outlet 14 for measuring the volume of the liquid material 6 transferred from the flow guide tube 16 to the sample bottle 15. In this embodiment, the flowmeter is disposed near the mouth of the sampling bottle 15, so that the volume of the liquid material 6 in the sampling bottle 15 can be monitored in real time, and thus, the accuracy of the volume of the liquid material 6 is high.

In some embodiments, the liquid material storage tank 1 comprises a backflow device 22, and the backflow device 22 is communicated between the collecting device 5 and the tank 2 and is used for backflow of the liquid material 6 at the previous liquid level flowing into the collecting device 5 into the tank 2 before the liquid material 6 at the next liquid level is collected. When the liquid material 6 at the next liquid level height needs to be collected, the sampling port 9 at the previous liquid level height needs to be adjusted to the next liquid level height, and the liquid material 6 at the previous liquid level height still remains in the sampling pipe 8 which reaches the next liquid level height. Consequently, need set up reflux unit 22, with the liquid material 6 of the last fluid level height that persists in the sampling tube 8 backward flow to jar body 2 in, on the one hand, avoid influencing the sampling precision of liquid material 6 of next fluid level height, on the other hand prevents the waste of liquid material 6.

In some embodiments, the reflux device 22 comprises a reflux pipe 23 and a second pressurizing device 24, wherein one end of the reflux pipe 23 is communicated with the sampling bottle 15, and the other end of the reflux pipe 23 is communicated with the tank body 2; the second pressurizing device 24 is provided in the sampling bottle 15. At the in-process of the liquid material 6 backward flow, can transmit the liquid material 6 of the last liquid level height that persists in the sampling tube 8 earlier to the sample bottle 15 in, rethread second supercharging equipment 24 inhales from the sample bottle 15 in, forms pressure liquid material 6 and discharges back flow 23, and then flows back to jar body 2. Thus, the reflux device 22 has a simple structure and a good reflux effect. In some embodiments, the second pressure intensifying apparatus 24 comprises a hydraulic pump. In addition, during the reflux of the liquid material 6, the volume of the liquid material 6 remaining in the sampling tube 8 at the previous liquid level is calculated, and the volume of the portion of the liquid material 6 transferred into the sampling bottle 15 is measured by the flow meter 21. When the volume of the liquid material 6 transferred to the sampling bottle 15 measured by the flow meter 21 is equal to the previously calculated volume of the liquid material 6 at the previous level remaining in the sampling tube 8, it indicates that the liquid material 6 at the previous level remaining in the sampling tube 8 has been discharged.

Fig. 2 is a schematic structural diagram of another embodiment of the liquid material storage tank 1 provided in the present application. As shown in FIG. 2, in some embodiments, the return device 22 includes a first control valve 25 and a return line 23; the first control valve 25 comprises an inlet end 26, a first outlet end 27 and a second outlet end 28, wherein the inlet end 26 is connected to the first end of the draft tube 16; the first outlet end 27 is communicated with the sample receiving bottle 15; one end of the return pipe 23 is connected with the second outlet end 28, and the other end is communicated with the tank body 2. This embodiment is another type of reflow apparatus 22. Specifically, the first control valve 25 is provided at the intersection of the sample receiving bottle 15, the flow guide tube 16, and the return tube 23, so that the sample receiving bottle 15, the flow guide tube 16, and the return tube 23 are connected together. During sampling, the inlet end 26 and the first outlet end 27 are opened, and the second outlet end 28 is closed, so that the liquid material 6 in the sampling tube 8 is transferred to the sampling bottle 15 through the flow guide tube 16, and sampling is completed. During the backflow process, the inlet end 26 and the second outlet end 28 are opened, and the first outlet end 27 needs to be closed, so that the liquid material 6 at the previous liquid level height in the sampling tube 8 flows back to the tank body 2 through the flow guide tube 16 and the backflow tube 23 in sequence, and the backflow work is completed. With such an arrangement, the sampling operation and the backflow operation do not interfere with each other, and the structure is simpler and the operation is more convenient than the structure of the backflow device 22 in the previous embodiment. In some embodiments, the first control valve 25 comprises a three-way valve.

With continued reference to fig. 1 and 2, in some embodiments, the liquid material storage tank 1 includes a control system 29, and the control system 29 is electrically connected to the motor 10, the control valve 18, the first pressure increasing device 19, the flow meter 21, the second pressure increasing device 24, and the first control valve 25, and is used for controlling the operation states of the motor 10, the control valve 18, the first pressure increasing device 19, the flow meter 21, the second pressure increasing device 24, and the first control valve 25. The motor 10, the control valve 18, the first pressure intensifying means 19, the flow meter 21, the second pressure intensifying means 24 and the first control valve 25 are all controlled by a control system 29 outside the tank 2. In some embodiments, control system 29 comprises a PLC controller.

In some embodiments, the liquid material storage tank 1 further comprises a liquid level meter 30, which is disposed at the top of the tank 2, and is used for measuring the total liquid level H of the liquid material 6 in the tank 2, so that the liquid level H of the sampling port 9 can be determined. For example, when a half of the liquid material 6 in the tank 2 needs to be sampled, the height H of the liquid level of the sampling port 9 is 1/2 × H.

Fig. 3 is a diagram illustrating steps of a sampling method 32 for the liquid material storage tank 1 provided by the present application. As shown in fig. 3, the sampling method 32 includes: step S1, according to the position of the liquid material to be sampled, the reel 11 is driven to rotate by the motor 10 so as to drive the sampling tube 8 to move to the liquid level height corresponding to the position to be sampled; and step S2, collecting the liquid material collected by the sampling tube 8 to obtain the sample liquid material at the position to be sampled. In this embodiment, in the process of collecting the sample liquid material at a single liquid level height in the tank body 2, the reel 11 can be driven to rotate by the driving shaft 12 of the motor 10, so that the rope 31 drives the sampling tube 8 to ascend or descend to reach the liquid level height corresponding to the preset position to be sampled, thereby achieving the purpose of collecting the sample liquid material at the position to be sampled.

Fig. 4 is a diagram illustrating specific steps of an embodiment of a sampling method 32 for a liquid material storage tank 1 provided by the present application. As shown in fig. 4, the liquid material collected by the sampling tube 8 is collected to obtain a sample liquid material, which specifically includes: step S21, collecting sample liquid material at a first liquid level height; step S22, moving the sampling tube 8 to a second liquid level; step S23, refluxing a part of the sample liquid material at the first liquid level height remained in the sampling tube 8 to the liquid material storage tank 1; step S24, collecting the sample liquid material at the second liquid level. In this embodiment, after collecting the sample liquid materials at the first liquid level height in the liquid material storage tank 1, the sample liquid materials at the first liquid level height still remain in the sampling tube 8 at this time, and then the sample liquid materials at the first liquid level height remaining in the sampling tube 8 need to be returned to the tank body 2 by the returning device 22. After the reflux operation is finished and the reflux device 22 is closed, the sample liquid material at the set second liquid level height is collected, and the collected sample liquid material is transferred into the sample receiving bottle 15.

In the process of collecting the combined sample liquid material obtained by mixing the sample liquid materials with different liquid level heights according to any proportion, the step of collecting the sample liquid material at the position of a single liquid level height is repeated, so that the sample liquid materials which are singly collected for multiple times are combined according to the set proportion, and the mixed combined sample liquid material is obtained.

Although the present invention has been described with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the scope of the present invention.

Claims (14)

1. A liquid material storage tank, comprising:

the tank body is used for storing liquid materials;

the sampling device comprises a sampling tube, the sampling tube is arranged in the tank body and is inserted into the liquid material, and the sampling tube is provided with a sampling port;

the driving device is arranged at the top of the tank body and connected with the sampling tube, and comprises a motor and a reel; the motor includes a drive shaft; one end of the reel is connected with the driving shaft, and the other end of the reel is connected with the sampling tube; the motor is used for driving the reel to rotate, and the reel drives the sampling tube to move up and down so as to adjust the liquid level height of the sampling port at the liquid material;

and the collecting device is connected with the sampling tube and is used for collecting the liquid material of the sampling tube.

2. The liquid material storage tank of claim 1, wherein the drive means further comprises a cord having one end connected to the reel and another end connected to the sampling tube.

3. The liquid material storage tank of claim 2, wherein the sampling pipe is disposed along a height direction of the tank body and is the same as a stretching direction of the rope.

4. The liquid material storage tank of claim 2, wherein the sampling tube is a flexible tube, and the sampling device further comprises a tube collecting member connected to the sampling tube and disposed below the sampling tube, the tube collecting member being configured to curl and collect a portion of the sampling tube.

5. The liquid material storage tank of claim 1, wherein the sampling tube includes a lead-out port that is closer to a bottom of the tank than the sampling port; the collecting device comprises a sample collecting bottle and a flow guide pipe; the sample collection bottle is arranged on the outer side of the tank body; the first end intercommunication of honeycomb duct receive the appearance bottle, the second end intercommunication of honeycomb duct jar body and with the export intercommunication is used for the transmission the sampling tube is gathered liquid material extremely receive the appearance bottle.

6. The liquid material storage tank of claim 5, wherein the collecting device comprises a control valve located outside the tank body and disposed in the diversion pipe for controlling the flow or blockage of the liquid material in the diversion pipe.

7. The liquid material storage tank of claim 5, wherein the collecting device comprises a first pressurizing device disposed in the flow guide pipe for pressurizing the liquid material in the flow guide pipe.

8. The liquid material storage tank according to claim 7, wherein the collecting device comprises a buffer tank disposed in the flow guide tube and located between the first pressurizing device and the sample receiving bottle for buffering the flow rate of the liquid material in the flow guide tube.

9. The liquid material storage tank of claim 5, wherein the collecting device comprises a flow meter disposed on the flow guide tube, and the flow meter is disposed closer to the sample receiving bottle than the outlet for measuring the volume of the liquid material transferred from the flow guide tube to the sample receiving bottle.

10. The liquid material storage tank of claim 5, including a backflow device in communication between the collection device and the tank for backflow of liquid material at a previous level flowing into the collection device into the tank prior to collection of liquid material at a next level.

11. The liquid material storage tank of claim 10, wherein the reflux device comprises a reflux pipe and a second pressurizing device, wherein one end of the reflux pipe is communicated with the sampling bottle, and the other end of the reflux pipe is communicated with the tank body; the second supercharging equipment is arranged on the sample receiving bottle.

12. The liquid material storage tank of claim 10, wherein the return means comprises a first control valve and a return pipe; the first control valve comprises an inlet end, a first outlet end and a second outlet end, wherein the inlet end is connected with the first end of the flow guide pipe; the first outlet end is communicated with the sample receiving bottle; one end of the return pipe is connected with the second outlet end, and the other end of the return pipe is communicated with the tank body.

13. The sampling method of the liquid material storage tank is characterized in that a sampling pipe is arranged in the liquid material storage tank and is inserted into the liquid material in the liquid material storage tank; the top of the liquid material storage tank is provided with a motor and a reel, and the motor comprises a driving shaft; one end of the reel is connected with the driving shaft, and the other end of the reel is connected with the sampling tube; the sampling method comprises the following steps:

according to the position of the liquid material to be sampled, the reel is driven to rotate by the motor so as to drive the sampling pipe to move to the liquid level height corresponding to the position to be sampled;

and collecting the liquid material collected by the sampling tube to obtain a sample liquid material.

14. The sampling method of claim 13, wherein collecting the liquid material collected by the sampling tube to obtain a sample liquid material comprises:

collecting the sample liquid material at a first liquid level height;

moving the sampling tube to a second level;

returning a portion of the sample liquid material remaining in the sampling tube at the first level height to the liquid material storage tank;

collecting sample liquid material at the second liquid level.

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