Novel liquid pumping device

Abstract

The utility model discloses a novel liquid pumping device which comprises a machine frame, and a liquid pumping assembly, a metering control assembly and a purification assembly are arranged on the machine frame. The liquid pumping assembly comprises a pump body, and a liquid inlet connector and a liquid outlet connector of the pump body are provided with a feeding pipe and a discharging pipe respectively. The metering control assembly comprises a control module, a touch display screen, a meter and a stop valve; the touch display screen is connected with the rack, and a control module is arranged in the touch display screen; the meter and the stop valve are respectively arranged on the feeding pipe and the discharging pipe; the control module is electrically connected with the touch display screen, the meter, the stop valve and the pump body; the purification assembly comprises a negative pressure generator connected with the rack, and a filtering assembly is arranged at the air exhaust end of the negative pressure generator. According to the utility model, liquid pumping is automatic, safe and accurate, quantitative control is realized, the operation is stable and reliable, the operation is convenient and fast, manpower is saved, and the personal safety of workers is protected; the device is suitable for laboratory analysis, chemical raw material conveying, food processing and other scene liquid treatment.

Description

Technical Field

[0001] This utility model relates to the field of liquid extraction technology, and in particular to a novel liquid extraction device. Background Technology

[0002] Existing liquid aspirators are primarily operated manually, which has revealed multiple technical bottlenecks in practical applications:

[0003] Firstly, the quantitative control accuracy of manual operation depends on the operator's experience, and it is difficult to meet the ±1% measurement error requirement in micro-volume or continuous injection scenarios.

[0004] Secondly, when dealing with high-viscosity fluids (such as silicone, resin, etc.), manually driven piston structures are prone to jamming or insufficient suction.

[0005] Third, when extracting volatile organic solvents (such as acetone and formaldehyde) in a closed or poorly ventilated environment, the risk of aerosol exposure generated by manual operation increases significantly, and frequent repetitive operations exacerbate occupational health hazards for workers.

[0006] Therefore, in order to solve the above problems, it is necessary to develop a new type of liquid extraction device that is accurate, self-controlled and safe, stable and reliable in operation, convenient to operate, and saves manpower; suitable for liquid handling in scenarios such as laboratory analysis, chemical raw material transportation, and food processing. Utility Model Content

[0007] To solve the above problems, the technical solution adopted by this utility model is as follows:

[0008] A novel liquid extraction device includes a frame, characterized in that the frame is provided with a liquid extraction component, a metering control component, and a purification component;

[0009] The liquid pumping assembly includes a pump body mounted on the frame, and the pump body has an inlet port and an outlet port respectively equipped with an inlet pipe and an outlet pipe.

[0010] The metering and control component includes a control module, a touch screen display, a meter, and a stop valve;

[0011] The touch screen is connected to the rack, and a control module is installed inside the touch screen;

[0012] The metering device and the stop valve are respectively installed on the feed pipe and the discharge pipe;

[0013] The control module is electrically connected to the touch screen, meter, stop valve and pump body;

[0014] The purification component includes a negative pressure generator connected to the frame, and a filter component is provided at the suction end of the negative pressure generator. The purification component is used to remove volatile organic solvents overflowing from the discharge pipe.

[0015] Preferably, the purification assembly further includes a gas collection hood, an outer sleeve, and a gas collection pipe connected in sequence;

[0016] The outer sleeve is fitted over the outside of the discharge pipe, and the gas collection hood is located outside the discharge end of the discharge pipe;

[0017] The end of the gas collecting pipe furthest from the outer casing is connected to the filter assembly.

[0018] Preferably, the filter assembly includes a filter housing, an opening of which is provided with a hinged cover, and a removable filter is provided inside the filter housing.

[0019] Preferably, a VOC sensor electrically connected to the control module is installed on the pipe connecting the filter housing and the negative pressure generator.

[0020] Preferably, the filter is an activated carbon filter.

[0021] Preferably, the gas collection hood is made of a transparent material.

[0022] Preferably, a support frame is provided between the gas collecting hood and the discharge pipe.

[0023] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0024] 1. The automatic and precise quantitative control of liquid extraction can meet the measurement error requirement of ±1% in micro-volume or continuous injection scenarios. Moreover, it is stable and reliable in operation, convenient in operation, and saves manpower.

[0025] 2. Through the combined design of purification and filtration components, volatile organic solvents that overflow from the discharge pipe during the liquid extraction process are centrally filtered, thereby preventing workers from inhaling the overflowing volatile organic solvents in enclosed or poorly ventilated environments, improving safety and protecting the personal safety of workers.

[0026] 3. Suitable for liquid handling in laboratory analysis, chemical raw material transportation, food processing and other scenarios. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of this utility model;

[0028] The components include: frame 1, pump body 2, metering and control component 3, purification component 4, filter component 5, VOC sensor 6, support frame 7, control module 31, touch screen display 32, metering device 33, stop valve 34, negative pressure generator 41, gas collection hood 42, outer sleeve 43, gas collection pipe 44, filter box 51, box cover 52, filter 53, feed pipe 10, and discharge pipe 20. Detailed Implementation

[0029] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. Preferred embodiments of this utility model are shown in the drawings. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this utility model.

[0030] It should be noted that when a component is said to be "fixed to" another component, it can be directly attached to the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," "up," "down," "front," "back," and similar expressions used in this document are for illustrative purposes only.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0032] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments:

[0033] like Figure 1 As shown, a novel liquid extraction device includes a frame 1, on which a liquid extraction assembly, a metering control assembly 3, and a purification assembly 4 are mounted.

[0034] The liquid extraction assembly includes a pump body 2 disposed on the frame 1, and the pump body 2 is provided with a feed pipe 10 and a discharge pipe 20 on the inlet and outlet interfaces, respectively.

[0035] The metering control component 3 includes a control module 31, a touch screen 32, a meter 33, and a stop valve 34;

[0036] The touch screen 32 is connected to the frame 1, and a control module 31 is installed inside the touch screen 32;

[0037] The metering device 33 and the stop valve 34 are respectively installed on the feed pipe 10 and the discharge pipe 20;

[0038] The control module 31 is electrically connected to the touch screen 32, the meter 33, the stop valve 34 and the pump body 2;

[0039] The purification component 4 includes a negative pressure generator 41 connected to the frame 1. The suction end of the negative pressure generator 41 is provided with a filter component 5. The purification component 4 is used to remove volatile organic solvents overflowing from the discharge pipe 20.

[0040] In this embodiment, under the control of the control module 31, the touch screen 32 can display the liquid extraction volume in real time. The required liquid extraction volume can be set on the touch screen 32, and then the metering device 33 controls the pump body 2 and the stop valve 34 to work according to the actual liquid extraction volume. When the metering device 33 detects in real time that the liquid extraction volume is greater than the set liquid extraction volume, it controls the stop valve 34 to close and the pump body 2 to stop working. Compared with the existing technology that relies solely on manual experience to operate the quantitative method, this method achieves automatic and accurate quantitative control of liquid extraction. It can meet the ±1% measurement error requirement in micro-volume or continuous injection scenarios. Moreover, it is stable and reliable in operation, convenient in operation, and saves manpower.

[0041] In this embodiment, the purification component 4 can centrally filter the volatile organic solvents that overflow from the discharge pipe 20 during the liquid extraction process, thereby preventing workers from inhaling the overflowing volatile organic solvents in a closed or poorly ventilated environment, improving safety and protecting the personal safety of workers.

[0042] In this embodiment, the stop valve 34 is a solenoid valve to improve electronic control response and stability.

[0043] In this embodiment, the negative pressure generator 41 is an exhaust fan.

[0044] Furthermore, such as Figure 1 As shown, in order to improve the removal effect and efficiency of volatile organic solvents, the purification component 4 also includes a gas collection hood 42, an outer sleeve 43 and a gas collection pipe 44 connected in sequence;

[0045] The outer sleeve 43 is sleeved on the outside of the discharge pipe 20, and the gas collection hood 42 is located outside the discharge end of the discharge pipe 20.

[0046] The end of the gas collecting pipe 44 away from the outer casing 43 is connected to the filter assembly 5.

[0047] In this embodiment, through the combined design of the gas collecting hood 42, the outer sleeve 43 and the gas collecting pipe 44, under the action of negative pressure, volatile organic solvents enter the gas collecting pipe 44 from the gas collecting hood 42 and the channel between the outer sleeve 43 and the discharge pipe 20, and are then filtered and purified by the filter assembly 5. This structural design not only prevents volatile organic solvents from overflowing to the outside, but also allows for rapid filtration of volatile organic solvents.

[0048] In this embodiment, the integrated sleeve structure design simplifies the pipeline structure and improves operational convenience.

[0049] Furthermore, such as Figure 1 As shown, in order to facilitate the replacement of filter 53, the filter assembly 5 includes a filter housing 51, and a hinged cover 52 is provided on the opening of the filter housing 51. A removable filter 53 is provided inside the filter housing 51.

[0050] In this embodiment, the end of the cover 52 that is rotatably hinged to the filter box 51 is snapped into the filter box 51 or connected to it via an external locking device.

[0051] Furthermore, such as Figure 1 As shown, in order to accurately determine the filtration life of filter 53 and ensure filtration reliability, a VOC sensor 6 electrically connected to the control module 31 is installed on the pipe connecting the filter housing 51 and the negative pressure generator 41.

[0052] In this embodiment, the filtration performance of the filter 53 is determined by real-time monitoring of whether the air filtered by the filter 53 contains volatile organic solvents using the VOC sensor 6. When volatile organic solvents are detected, it indicates that the filter 53 needs to be replaced.

[0053] Furthermore, the filter 53 is an activated carbon filter.

[0054] Furthermore, such as Figure 1 As shown, in order to improve the ease of operation and ensure that the discharge pipe 20 can be quickly inserted into the opening of the storage tank, the gas collection hood 42 is made of transparent material.

[0055] Furthermore, such as Figure 1 As shown, in order to improve the connection stability and reliability of the gas collecting hood 42, a support frame 7 is provided between the gas collecting hood 42 and the discharge pipe 20.

[0056] For those skilled in the art, various other corresponding changes and modifications can be made based on the technical solutions and concepts described above, and all such changes and modifications should fall within the protection scope of the claims of this utility model patent.

Claims

1. A novel liquid extraction device comprising a housing characterized in that, The rack is provided with a liquid pumping assembly, a metering control assembly and a purification assembly; The liquid pumping assembly comprises a pump body provided on the rack, and an inlet pipe and an outlet pipe are respectively arranged on a liquid inlet interface and a liquid outlet interface of the pump body; The metering control assembly comprises a control module, a touch display screen, a meter and a stop valve; The touch display screen is connected with the rack, and the control module is arranged in the touch display screen; The meter and the stop valve are respectively arranged on the inlet pipe and the outlet pipe; The control module is electrically connected with the touch display screen, the meter, the stop valve and the pump body; The purification assembly comprises a negative pressure generator connected with the rack, and a filter assembly is arranged on a gas suction end of the negative pressure generator, and the purification assembly is used for removing volatile organic solvents overflowing at the outlet pipe.

2. A novel liquid suction device as claimed in claim 1, characterized in that The purification assembly further comprises a gas collecting cover, an outer sleeve and a gas collecting pipe which are connected in sequence; The outer sleeve is arranged outside the outlet pipe, and the gas collecting cover is arranged outside a discharge end of the outlet pipe; One end of the gas collecting pipe, which is away from the outer sleeve, is connected with the filter assembly.

3. A novel liquid suction device as claimed in claim 1, wherein The filter assembly comprises a filter box body, a hinge-rotated box cover is arranged on an opening of the filter box body, and a detachable filter is arranged in the filter box body.

4. A novel liquid suction device as claimed in claim 3, characterized in that A VOC sensor electrically connected with the control module is arranged on a pipeline connected with the negative pressure generator.

5. A novel liquid suction device as claimed in claim 3, wherein The filter is an activated carbon filter.

6. A novel liquid suction device as claimed in claim 2, wherein The gas collecting cover is made of transparent material.

7. A novel liquid suction device as claimed in claim 2, wherein A support frame is arranged between the gas collecting cover and the outlet pipe.

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