Liquid holdup device

Abstract

The utility model provides a kind of liquid sample holding device, comprising: metering pump;First sampling component, first sampling component with the outlet of metering pump intercommunication, first sampling component includes first control valve, first controller and first sampling tank, first control valve is arranged in the upstream of first sampling tank, first controller is electrically connected with first control valve and metering pump respectively, and first controller controls first sampling component interval preset time sampling;Second sampling component, second sampling component with the outlet of metering pump intercommunication, second sampling component includes second control valve, second controller and second sampling tank, second control valve is arranged in the upstream of second sampling tank, second controller is electrically connected with second control valve and metering pump respectively, and second controller is random number generator, and second controller controls second sampling component interval random time sampling. Application of the technical scheme of the present application can solve the problem of low reliability of liquid sample holding device in the prior art for collecting liquid samples.

Description

Technical Field

[0001] This utility model relates to the field of liquid sample retention technology, and more specifically, to a liquid sample retention device. Background Technology

[0002] Currently, in many industrial production processes and scientific research experiments, it is necessary to retain samples of the liquid to be monitored for testing in order to monitor the stability of the production process or study changes in various properties of the liquid.

[0003] On the one hand, most existing sampling devices can only perform sampling at fixed time intervals, lacking flexibility. For example, in industrial production processes, production conditions are not static; product quality may fluctuate due to factors such as batch differences in raw materials and fluctuations in equipment operating status. This fixed-time sampling method cannot adapt to these complex and ever-changing production situations, and may miss key quality change points, making the sampled samples unable to comprehensively and accurately reflect the product quality during the production process. On the other hand, there is a lack of random sampling functionality. In scenarios where the randomness of samples is highly important, such as food and drug safety testing, fixed-time sampling may be affected by certain periodic factors, resulting in samples that are not widely representative. For example, if production equipment has slight performance differences within a specific time period each day, fixed-time sampling may result in multiple samples affected by these performance differences, thus failing to accurately reflect the overall product quality. Utility Model Content

[0004] This invention provides a liquid sample retention device to solve the problem of low reliability in liquid sample collection by existing liquid sample retention devices.

[0005] This utility model provides a liquid sampling device, which includes: a metering pump; a first sampling component connected to the outlet of the metering pump, the first sampling component including a first control valve, a first controller, and a first sampling tank, the first control valve being located upstream of the first sampling tank, the first controller being electrically connected to the first control valve and the metering pump respectively, the first controller controlling the first sampling component to sample at preset time intervals; and a second sampling component connected to the outlet of the metering pump, the second sampling component including a second control valve, a second controller, and a second sampling tank, the second control valve being located upstream of the second sampling tank, the second controller being electrically connected to the second control valve and the metering pump respectively, the second controller being a random number generator, the second controller controlling the second sampling component to sample at random time intervals.

[0006] Furthermore, the first sampling tank has a first outlet, and a third control valve is provided at the first outlet, which is electrically connected to the first controller.

[0007] Furthermore, multiple first sampling tanks are provided, and the multiple first sampling tanks are connected in series. A fourth control valve is provided downstream of each first sampling tank, and the fourth control valve is electrically connected to the first controller.

[0008] Furthermore, the second sampling tank has a second outlet, and a fifth control valve is installed at the second outlet. The fifth control valve is electrically connected to the first controller.

[0009] Furthermore, multiple second sampling tanks are provided, and the multiple second sampling tanks are connected in series. A sixth control valve is provided downstream of each second sampling tank, and the sixth control valve is electrically connected to the first controller.

[0010] Furthermore, the second sampling assembly also includes a venting line, which is located downstream of the second control valve. One end of the venting line is connected to the upstream of the plurality of second sampling tanks, and the other end of the venting line is connected to the end of the plurality of second sampling tanks.

[0011] Furthermore, when the first controller controls the first control valve to open once at interval T, the interval at which the second controller controls the second control valve to open is within 0.9T to 2T.

[0012] Furthermore, the liquid sample retention device also includes a purging assembly, which is connected to the first sampling tank and the second sampling tank respectively.

[0013] Furthermore, the purging assembly includes a blower, a seventh control valve, and an eighth control valve. The seventh control valve is located between the first sampling tank and the blower and is electrically connected to the first controller. The eighth control valve is located between the second sampling tank and the blower and is electrically connected to the second controller.

[0014] Furthermore, both the first and second sampling tanks are equipped with level gauges.

[0015] By applying the liquid sampling device of this application, when timed interval sampling is required, the first controller can control the metering pump to start drawing liquid from the source and open the first control valve, allowing the liquid to enter the first sampling tank, thus completing timed sampling of the liquid source. When random time interval sampling is required, the second controller can control the metering pump to start drawing liquid from the source and open the second control valve, allowing the liquid to enter the second sampling tank, thus completing random sampling of the liquid source. Applying the technical solution of this application, timed and random sampling of the liquid source can be completed through the first and second sampling components. On the one hand, it satisfies the requirement of timed sampling analysis of the liquid source, and timed sampling is flexible and controllable. Users can freely set the time interval and number of samplings according to actual needs. This flexibility can adapt to different production rhythms and testing requirements. On the other hand, the second sampling component effectively avoids the deviation that may be caused by fixed-time sampling, making the collected samples more representative. In fields such as food and drug safety testing, where the randomness of samples is highly important, random sampling can more accurately reflect the overall quality of the product, enhance the credibility of the test results, and improve the reliability of the overall liquid sampling device in collecting samples. Attached Figure Description

[0016] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0017] Figure 1 A schematic diagram of the liquid sample retention device provided by this utility model is shown.

[0018] The above figures include the following reference numerals:

[0019] 100. Metering pump;

[0020] 210. First control valve; 220. First sampling tank; 230. Third control valve; 240. Fourth control valve;

[0021] 310. Second control valve; 320. Second sampling tank; 330. Fifth control valve; 340. Sixth control valve;

[0022] 400. Empty venting pipeline;

[0023] 510. Fan; 520. Seventh control valve; 530. Eighth control valve. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present utility model or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0025] like Figure 1 As shown, this embodiment of the present invention provides a liquid sampling device, which includes a metering pump 100, a first sampling component, and a second sampling component. The first sampling component is connected to the outlet of the metering pump 100 and includes a first control valve 210, a first controller, and a first sampling tank 220. The first control valve 210 is located upstream of the first sampling tank 220. The first controller is electrically connected to both the first control valve 210 and the metering pump 100, and controls the first sampling component to sample at preset time intervals. The second sampling component is also connected to the outlet of the metering pump 100 and includes a second control valve 310, a second controller, and a second sampling tank 320. The second control valve 310 is located upstream of the second sampling tank 320. The second controller is electrically connected to both the second control valve 310 and the metering pump 100, and is a random number generator. The second controller controls the second sampling component to sample at random time intervals.

[0026] Using the liquid sampling device of this application, when timed interval sampling is required, the first controller can control the metering pump 100 to start drawing liquid from the source and open the first control valve 210, allowing the liquid to enter the first sampling tank 220, thus completing timed sampling of the liquid source. When random time interval sampling is required, the second controller can control the metering pump to start drawing liquid from the source and open the second control valve 310, allowing the liquid to enter the second sampling tank 320, thus completing random sampling of the liquid source. Applying the technical solution of this application, timed and random sampling of the liquid source can be completed through the first and second sampling components. On the one hand, it satisfies the requirement of timed sampling analysis of the liquid source, and timed sampling is flexible and controllable. Users can freely set the time interval and number of samplings according to actual needs. This flexibility can adapt to different production rhythms and testing requirements. On the other hand, the second sampling component effectively avoids the deviation that may be caused by fixed-time sampling, making the collected samples more representative. In fields such as food and drug safety testing, where the randomness of samples is highly important, random sampling can more accurately reflect the overall quality of the product, enhance the credibility of the test results, and improve the reliability of the overall liquid sampling device in collecting samples.

[0027] Specifically, in this application, the second controller may include a random number generation module. This module generates a random number according to process requirements, corresponding to a time interval within a set range, such as 0-1440 minutes, with a maximum of 120 minutes. It then calculates the next random sampling time point and compares it with the current time. When the random sampling time point is reached, the second controller starts the metering pump 100 and the second control valve 310. After each random sampling is completed, the second controller regenerates a random number and calculates the next random sampling time point, repeating this cycle to achieve continuous random sampling.

[0028] In one specific embodiment of this application, when the first controller controls the first control valve 210 to open once at interval T, the second controller controls the second control valve 310 to open at intervals between 0.9T and 2T. By specifically setting the sampling time of the second sampling tank 320, it is neither too short nor too long, to prevent random sampling from being performed in too short or too long a time, thus ensuring the reliability of the sampled samples.

[0029] Furthermore, users can set the time interval (such as every hour, every two hours, etc.) and the number of samplings through the program-controlled operation interface or host computer software. When the set sampling time point is reached, the controller sends an instruction to the metering pump 100 and the first control valve 210. The sampling metering pump 100 and the first control valve 210 collect a certain amount of liquid according to the set flow rate to complete one timed sampling operation.

[0030] In some feasible embodiments of this application, the device may also be equipped with sensors to monitor parameters such as the operating status of the metering pump 100, liquid flow rate, and liquid level in the sample retention container in real time. The data collected by the sensors is analyzed and processed. When an abnormality is detected (such as sampling pump failure, abnormal liquid flow rate, or a full sample retention container), an alarm message is immediately sent to the host computer via the communication interface, and an alarm prompt is displayed on the device's operating interface. Users can take appropriate measures based on the alarm message to promptly mitigate losses and ensure the normal operation of the device and the effective collection of samples.

[0031] Specifically, in this application, a corrosion-resistant and pollution-free sampling pipe material can be used to reduce the risk of sample contamination, ensure the originality of the sample and the accuracy of the test results, and is especially suitable for liquid sampling in fields such as medicine and scientific research where the purity requirements are extremely high.

[0032] Specifically, the first sampling container 220 has a first outlet, and a third control valve 230 is installed at the first outlet. The third control valve 230 is electrically connected to the first controller. This configuration facilitates the discharge of samples from the first sampling container 220 without requiring separation of the first sampling container 220 in a separate liquid retention device, thus making it easier for staff to collect samples.

[0033] In one specific embodiment of this application, multiple first sampling tanks 220 are provided, and the multiple first sampling tanks 220 are connected in series. A fourth control valve 240 is provided downstream of each first sampling tank 220, and the fourth control valve 240 is electrically connected to a first controller. Providing multiple first sampling tanks 220 can increase the number of samples that can be collected by the liquid sampling device, reduce the sampling frequency, and thus improve the ease of operation of the liquid sampling device. Specifically, the fourth control valve 240 is provided downstream of each first sampling tank 220 to facilitate control of the sampling process, such as... Figure 1 The liquid sampling device shown has three first sampling tanks 220. During the first sampling, the second control valve 310 closes the fourth control valve 240 at the end and opens the remaining fourth control valves 240, thus forming a connected flow path for the multiple first sampling tanks 220, allowing the sampled liquid to enter all three. During the second sampling, the fourth control valve 240 in the middle is closed, and the third control valve 230 in the middle first sampling tank 220 is opened, allowing the sample retained from the previous sampling to be discharged. After discharge, the third control valve 230 is closed, and the sample from the second sampling can enter the middle first sampling tank 220. Similarly, the operation for the third sampling is the same and will not be described again. By connecting multiple first sampling tanks 220 in series, the same number of first sampling tanks 220 can be used to retain as many samples as possible during the sampling process, which is particularly suitable for monitoring river water quality where a large number of samples can be collected and preserved.

[0034] In other embodiments of this application, multiple first sampling canisters 220 can be arranged in parallel, and a fourth control valve 240 is arranged between the first control valve 210 and each first sampling canister 220. When sampling, the first controller simultaneously controls the first control valve 210 and the fourth control valve 240 to open at the same time, and performs individual sampling in sequence. This arrangement can reduce contamination between samples from multiple samplings and is particularly suitable for conditions where the number of samples that can be collected is small, allowing for multiple accurate small-dose samplings.

[0035] Specifically, in one embodiment of this application, the second sampling container 320 has a second outlet, and a fifth control valve 330 is provided at the second outlet. The fifth control valve 330 is electrically connected to the first controller. This arrangement facilitates the discharge of samples from the second sampling container 320 without requiring separation of the second sampling container 320 in a separate liquid retention device, thus making it easier for staff to collect samples.

[0036] In some embodiments of this application, similar to the first sampling component, the second sampling component has multiple second sampling canisters 320, which are connected in series. Each second sampling canister 320 has a sixth control valve 340 downstream, which is electrically connected to the first controller to increase the number of samples collected.

[0037] In other embodiments of this application, multiple second sampling tanks 320 are provided, and multiple second sampling tanks 320 can also be arranged in parallel. The fifth control valve 330 is arranged between the first control valve 210 and each second sampling tank 320.

[0038] Furthermore, the second sampling assembly also includes a discharge line 400, which is located downstream of the second control valve 310. One end of the discharge line 400 is connected to the upstream of multiple second sampling canisters 320, and the other end is connected to the end of the multiple second sampling canisters 320. With this configuration, if the time interval between multiple random samplings controlled by the random number generator is too short, causing multiple second sampling canisters 320 to complete sampling within a short period and unable to continue sampling, the sixth control valve 340 downstream of the end second sampling canister 320 can be opened, the upstream sixth control valve 340 can be closed, and the fifth control valve 330 of the end second sampling canister 320 can be opened, allowing the sample that has completed the first sampling to be discharged, and sampling to continue.

[0039] Specifically, the liquid sampling device also includes a purging assembly, which is connected to the first sampling tank 220 and the second sampling tank 320 respectively. By setting up the purging assembly, when multiple first sampling tanks 220 or second sampling tanks 320 connected in series are sampled in sequence, the purging assembly can be used to purge and remove impurities from the first sampling tank 220 or second sampling tank 320, ensuring the accuracy of sampling.

[0040] Specifically, the purging assembly includes a blower 510, a seventh control valve 520, and an eighth control valve 530. The seventh control valve 520 is located between the first sampling tank 220 and the blower 510 and is electrically connected to the first controller. The eighth control valve 530 is located between the second sampling tank 320 and the blower 510 and is electrically connected to the second controller. When purging the first sampling tank 220, the upstream and downstream control valves of the first sampling tank 220 can be closed to make the first sampling tank 220 independent, and the corresponding third control valve 230 can be opened. Similarly, when purging the second sampling tank 320, the upstream and downstream control valves of the second sampling tank 320 can be closed to make the second sampling tank 320 independent, and the corresponding fifth control valve 330 can be opened. The blower 510 provides purging airflow to remove impurities.

[0041] Specifically, both the first sampling tank 220 and the second sampling tank 320 are equipped with level gauges to allow personnel to determine the liquid state within them. The level gauges can be either flap-type or pressure level gauges, etc.

[0042] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0043] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0044] In the description of this utility model, it should be understood that the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours of each component itself.

[0045] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0046] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.

[0047] The above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A liquid sample retention device, characterized in that, The liquid sample retention device includes: Metering pump (100); The first sampling component is connected to the outlet of the metering pump (100). The first sampling component includes a first control valve (210), a first controller, and a first sampling tank (220). The first control valve (210) is located upstream of the first sampling tank (220). The first controller is electrically connected to the first control valve (210) and the metering pump (100) respectively. The first controller controls the first sampling component to sample at preset time intervals. The second sampling component is connected to the outlet of the metering pump (100). The second sampling component includes a second control valve (310), a second controller, and a second sampling tank (320). The second control valve (310) is located upstream of the second sampling tank (320). The second controller is electrically connected to the second control valve (310) and the metering pump (100) respectively. The second controller is a random number generator and controls the second sampling component to sample at random time intervals.

2. The liquid sample retention device according to claim 1, characterized in that, The first sampling tank (220) has a first outlet, and a third control valve (230) is provided at the first outlet. The third control valve (230) is electrically connected to the first controller.

3. The liquid sample retention device according to claim 2, characterized in that, Multiple first sampling tanks (220) are provided, and multiple first sampling tanks (220) are connected in series. A fourth control valve (240) is provided downstream of each first sampling tank (220), and the fourth control valve (240) is electrically connected to the first controller.

4. The liquid sample retention device according to claim 1, characterized in that, The second sampling container (320) has a second outlet, and a fifth control valve (330) is provided at the second outlet. The fifth control valve (330) is electrically connected to the first controller.

5. The liquid sample retention device according to claim 4, characterized in that, Multiple second sampling tanks (320) are provided, and multiple second sampling tanks (320) are connected in series. A sixth control valve (340) is provided downstream of each second sampling tank (320), and the sixth control valve (340) is electrically connected to the first controller.

6. The liquid sample retention device according to claim 5, characterized in that, The second sampling assembly also includes an empty discharge line (400), which is located downstream of the second control valve (310). One end of the empty discharge line (400) is connected to the upstream of a plurality of second sampling tanks (320), and the other end of the empty discharge line (400) is connected to the end of a plurality of second sampling tanks (320).

7. The liquid sample retention device according to claim 1, characterized in that, When the first controller controls the first control valve (210) to open once at interval T, the second controller controls the second control valve (310) to open at intervals between 0.9T and 2T.

8. The liquid sample retention device according to claim 1, characterized in that, The liquid sample retention device also includes a purging assembly, which is connected to the first sampling tank (220) and the second sampling tank (320) respectively.

9. The liquid sample retention device according to claim 8, characterized in that, The purging assembly includes a blower (510), a seventh control valve (520), and an eighth control valve (530). The seventh control valve (520) is disposed between the first sampling tank (220) and the blower (510) and is electrically connected to the first controller. The eighth control valve (530) is disposed between the second sampling tank (320) and the blower (510) and is electrically connected to the second controller.

10. The liquid sample retention device according to claim 1, characterized in that, Both the first sampling tank (220) and the second sampling tank (320) are equipped with level gauges.

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