Rapid suction filtration device applied to detection

Abstract

The utility model provides a rapid suction filtration device applied to detection, and belongs to the field of suction filters. The device comprises a suction filtration collection bottle with a water sample inlet and a negative pressure generation port, and a suction filtration host machine butted with the negative pressure generation port and used for regulating and controlling the negative pressure of the suction filtration collection bottle. The first suction filtration assembly is composed of a first filter, a liquid storage bottle, a buffering bottle and a first flow guide pipe which are sequentially communicated, a first valve is arranged at the communication position of the liquid storage bottle and the buffering bottle, a second valve is arranged on the first flow guide pipe, and the suction filtration main machine is connected with the liquid storage bottle to adjust the internal pressure. The second suction filtration assembly comprises a second filter and a second guide pipe which are sequentially communicated, one end of the second filter is connected with the first guide pipe, the other end is connected with the suction filtration collection bottle through the second guide pipe, and filter holes of the second filter are smaller than those of the first filter. All the parts are sequentially arranged along the gravity direction of the suction filtration main machine. The suction filtration device effectively solves the problems of blockage of large particles and difficulty in interception of small particles through two-stage filtration with different precisions, and greatly improves the suction filtration speed and the purity of filtrate.

Description

Technical Field

[0001] This utility model relates to the field of vacuum filter technology, and more specifically, to a rapid vacuum filter device for detection. Background Technology

[0002] Water quality testing is a comprehensive and rigorous analytical process aimed at accurately assessing water quality and pollution levels by measuring various characteristics of the water body. From a physical perspective, it involves measuring water temperature, turbidity, and color; from a chemical perspective, it includes testing key indicators such as pH, dissolved oxygen, various metal ions, and chemical oxygen demand (COD); and from a biological perspective, it requires testing the types and quantities of microorganisms such as bacteria, viruses, and algae in the water. These data directly reflect the health status of the water body, providing crucial information for environmental monitoring, drinking water safety assurance, and industrial water use assessment.

[0003] Water filters play an indispensable role in water quality testing. After obtaining water samples, they often contain various suspended impurities, particulate matter, and microorganisms, which can interfere with subsequent accurate testing. Water filters utilize the principle of negative pressure to quickly and efficiently separate these solid substances from the liquid in the water sample. The separated filtrate is clear and pure, and can be directly used for various chemical analyses, ensuring the accuracy of the test data. At the same time, the substances retained on the filter membrane also have high analytical value, and can be further used for microbial culture or for analyzing the composition of particulate matter using specialized methods, thus providing more comprehensive and in-depth information for water quality testing.

[0004] Existing vacuum filters typically only have a single filtration stage, making it difficult to comprehensively and efficiently handle impurities of different types and particle sizes when faced with complex samples. Large particles easily clog the filter media, causing a sharp drop in filtration speed and affecting work efficiency. Simultaneously, for fine particles and colloids, single-stage vacuum filters have limited filtration precision, making it difficult to completely remove them. This results in the filtrate's purity failing to meet the requirements of highly precise experiments or production processes, such as scientific analysis and high-end pharmaceutical manufacturing. Utility Model Content

[0005] The purpose of this invention is to provide a rapid filtration device for detection, aiming to solve the technical problems mentioned in the background art.

[0006] The embodiments of this utility model are implemented as follows:

[0007] This application provides a rapid filtration device for detection, comprising: a filtration collection bottle having a water sample inlet and a negative pressure generating port; a filtration host connected to the negative pressure generating port for regulating the negative pressure of the filtration collection bottle; a first filtration assembly including a first filter, a storage bottle, a buffer bottle, and a first guide tube connected in sequence, a first valve provided at the connection between the storage bottle and the buffer bottle, a second valve provided on the first guide tube, the filtration host connected to the storage bottle for adjusting the internal pressure of the storage bottle; a second filtration assembly including a second filter and a second guide tube connected in sequence, the end of the second filter away from the second guide tube connected to the port of the first guide tube away from the buffer bottle, the end of the second guide tube away from the second filter connected to the filtration collection bottle, the filter pore size of the second filter being smaller than that of the first filter; wherein the first filter, the storage bottle, the buffer bottle, the first guide tube, the second filter, the second guide tube, and the filtration collection bottle are arranged in sequence along the gravity direction of the filtration host.

[0008] Furthermore, based on the aforementioned scheme, the bottom outlet of the first guide pipe is spaced above the second filter.

[0009] Furthermore, based on the aforementioned scheme, the negative pressure generating structure of the aforementioned vacuum filtration host is connected to the aforementioned liquid storage bottle and the aforementioned vacuum filtration collection bottle respectively through a three-way valve.

[0010] Furthermore, based on the aforementioned scheme, the liquid storage bottle is equipped with a liquid level sensor.

[0011] Furthermore, based on the aforementioned scheme, the bottom of the above-mentioned vacuum filtration host is provided with four rubber seats arranged in a rectangular pattern.

[0012] Furthermore, based on the aforementioned scheme, both the first filter and the second filter include a filter cartridge and a filter element, wherein the filter element is detachably disposed within the filter cartridge.

[0013] Furthermore, based on the aforementioned scheme, an annular platform is provided circumferentially on the inner wall of the filter cylinder, and the filter sand core is disposed on the upper side of the annular platform and threadedly engaged with the inner wall of the filter cylinder.

[0014] Compared with the prior art, the embodiments of this utility model have at least the following advantages or beneficial effects:

[0015] In practical use of the rapid filtration device of this application, the first valve is first closed, and the negative pressure of the filtration collection bottle and the storage bottle are adjusted independently by the filtration host. The negative pressure generated in the storage bottle forces the water sample through the first filter to achieve preliminary filtration of large particulate impurities. The water sample then flows into the storage bottle for storage, completing the first stage of filtration. The negative pressure generated in the filtration collection bottle causes the first-stage filtered water sample in the buffer bottle (when the liquid in the buffer bottle is insufficient, the first valve is opened, and the water sample in the storage bottle flows into the buffer bottle to replenish it) to undergo secondary fine filtration through the second filter with smaller pores, and finally flows into the filtration collection bottle. This scheme has significant advantages: First, by using two stages of filtration with different precision, it effectively overcomes the problem that large particulate impurities easily clog the filter media and that small particles and colloids are difficult to retain, greatly improving the filtration speed and the purity of the filtrate, which can fully meet the stringent requirements of scientific research analysis, high-end pharmaceuticals, and other fields with extremely high precision requirements. Secondly, the device achieves relatively independent negative pressure for the first and second filtration components, which users can adjust according to actual conditions, greatly enhancing the practicality and applicability of the device. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a front view of a rapid filtration device for detection according to an embodiment of the present invention;

[0018] Figure 2 This is a cross-sectional view of the first and second vacuum filtration components in cooperation according to an embodiment of the present invention;

[0019] Figure 3 for Figure 2 A magnified view of part A in the image.

[0020] Icons: 1-Rubber base, 2-Filter main unit, 3-First filter, 4-Level sensor, 5-Storage bottle, 6-Handle, 7-First valve, 8-Buffer bottle, 9-First guide tube, 10-Second valve, 11-Second filter, 12-Second guide tube, 13-Three-way valve, 14-Filter collection bottle, 15-Filter cylinder, 16-Annular platform, 17-Filter sand core. Detailed Implementation

[0021] The embodiments of this application will now be described in detail with reference to the accompanying drawings.

[0022] Example

[0023] Please refer to Figures 1-3 This application provides a rapid filtration device for detection, comprising: a filtration collection bottle 14 having a water sample inlet and a negative pressure generating port; a filtration host 2 connected to the negative pressure generating port for regulating the negative pressure of the filtration collection bottle 14; a first filtration assembly comprising a first filter 3, a storage bottle 5, a buffer bottle 8, and a first guide tube 9 connected in sequence, wherein a first valve 7 is provided at the connection between the storage bottle 5 and the buffer bottle 8, and a second valve 10 is provided on the first guide tube 9; the filtration host 2 is connected to the storage bottle 5 for adjusting the internal pressure of the storage bottle 5; and a second filtration assembly comprising... The second filter 11 and the second guide tube 12 are connected. The end of the second filter 11 away from the second guide tube 12 is connected to the port of the first guide tube 9 away from the buffer bottle 8. The end of the second guide tube 12 away from the second filter 11 is connected to the vacuum collection bottle 14. The filter pore size of the second filter 11 is smaller than that of the first filter 3. The first filter 3, the liquid storage bottle 5, the buffer bottle 8, the first guide tube 9, the second filter 11, the second guide tube 12, and the vacuum collection bottle 14 are arranged sequentially along the gravity direction of the vacuum filtration host 2.

[0024] In practical use of the rapid filtration device of this application, the first valve 7 is first closed, and the negative pressure of the filtration collection bottle 14 and the storage bottle 5 are adjusted by the filtration host 2 to make them independent of each other. The negative pressure generated by the storage bottle 5 can cause the water sample to pass through the first filter 3 to achieve preliminary filtration of large particulate impurities. Then the water sample flows into the storage bottle 5 for storage, completing the first stage of filtration. The negative pressure generated by the filtration collection bottle 14 causes the first-stage filtered water sample in the buffer bottle 8 (when the liquid in the buffer bottle 8 is insufficient, the first valve 7 is opened, and the water sample in the storage bottle 5 will flow into the buffer bottle 8 to replenish it) to undergo secondary fine filtration through the second filter 11 with smaller filter holes, and finally flow into the filtration collection bottle 14. This scheme has significant advantages: First, by using two stages of filtration with different precision, it effectively overcomes the problem that large particulate impurities easily clog the filter media and that small particles and colloids are difficult to intercept, greatly improving the filtration speed and the purity of the filtrate, which can fully meet the strict requirements of scientific research analysis, high-end pharmaceuticals and other fields with extremely high precision requirements. Secondly, the device achieves relatively independent negative pressure for the first and second filtration components, which users can adjust according to actual conditions, greatly enhancing the practicality and applicability of the device.

[0025] The main filter unit 2 is equipped with a handle 6 for easy carrying.

[0026] In a preferred embodiment, the bottom outlet of the first guide pipe 9 is spaced above the second filter 11.

[0027] In the above embodiment, the bottom outlet of the first guide tube 9 and the inlet above the second filter 11 are spaced apart, so that the negative pressure effect in the suction collection bottle 14 will not act on the first guide tube through the second filter 11, and the liquid in the buffer bottle 8 will fall into the second filter 11 only under the action of gravity.

[0028] In a preferred embodiment, the negative pressure generating structure of the above-mentioned vacuum filtration host 2 is connected to the above-mentioned liquid storage bottle 5 and the above-mentioned vacuum filtration collection bottle 14 respectively through a three-way valve 13.

[0029] In the above embodiment, by adjusting the three-way valve 13, the vacuum filtration host 2 can independently adjust the negative pressure of the liquid storage bottle 5 and the vacuum filtration collection bottle 14, which is practical.

[0030] As a preferred embodiment, the above-mentioned liquid storage bottle 5 is equipped with a liquid level sensor 4.

[0031] In the above embodiment, the liquid level sensor 4 can monitor the liquid level in the storage bottle 5 so that the liquid in the storage bottle 5 can be discharged to the buffer bottle 8 in a timely manner.

[0032] Optionally, both the liquid storage bottle 5 and the vacuum filtration collection bottle 14 are equipped with pressure sensors.

[0033] In a preferred embodiment, the bottom of the above-mentioned vacuum filter host 2 is provided with four rubber seats 1 arranged in a rectangular pattern.

[0034] In the above embodiments, the rubber base 1 is made of a soft material, which increases friction when in contact with the placement surface, effectively preventing the filter press 2 from shifting due to vibration during operation and ensuring stable placement of the device. Simultaneously, the rubber base 1 has a certain degree of elasticity, which can buffer the vibration generated during the operation of the filter press 2, reducing the impact of vibration on the surrounding environment and preventing internal components from loosening due to vibration, thus extending the service life of the press. Furthermore, the rubber base 1 also provides some protection for the press, preventing the bottom of the press from directly contacting the rough placement surface and being scratched or worn.

[0035] In a preferred embodiment, both the first filter 3 and the second filter 11 include a filter cartridge 15 and a filter element 17, wherein the filter element 17 is detachably disposed within the filter cartridge 15.

[0036] In the above embodiments, when the filter element 17 becomes clogged or damaged by impurities due to long-term use, it can be easily removed from the filter cartridge 15 for replacement without replacing the entire filter, thus reducing operating costs. Furthermore, for different filtration needs, filter elements 17 with different pore sizes and materials can be conveniently selected and installed in the filter cartridge 15, allowing for flexible adjustment of filtration precision and effect. This enables the filter to adapt to various complex filtration scenarios, improving its practicality and applicability.

[0037] In a preferred embodiment, an annular platform 16 is provided circumferentially on the inner sidewall of the filter cylinder 15, and the filter sand core 17 is disposed on the upper side of the annular platform 16 and is threadedly engaged with the inner sidewall of the filter cylinder 15.

[0038] In the above embodiments, the annular platform 16 provides stable support for the filter element 17, ensuring its accurate installation position and preventing displacement during filtration. The threaded connection simplifies the installation and removal of the filter element 17, allowing workers to easily replace or clean it. Furthermore, the threaded connection ensures a good seal between the filter element 17 and the filter cylinder 15, preventing unfiltered liquid from leaking through the gaps between the filter element and the cylinder wall, thus guaranteeing reliable filtration performance.

[0039] Furthermore, unless otherwise explicitly specified or limited, the terms "installation" and "connection" in this application embodiment should be interpreted broadly. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. The terms "upper," "lower," "left," "right," "inner," "outer," and "side," etc., are merely for reference to the direction in the accompanying drawings or the usual placement of the product during use. They are only for clearly describing this application and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. They should not be construed as limitations on this application. The terms "first," "second," etc., are only used for distinguishing descriptions and should not be construed as indicating or implying relative importance; "multiple" refers to at least two. In this application embodiment, the limitations on relative positional relationships such as parallel, perpendicular, and aligned are all relative to the current technological level and are not absolutely strict limitations. Slight deviations are allowed; approximations of parallel, perpendicular, and aligned are all acceptable. For example, "A and B are parallel" means that A and B are parallel or approximately parallel, and the angle between A and B can be between 0 degrees and 10 degrees.

[0040] The above are only some embodiments and implementation methods of this application. The protection scope of this application is not limited thereto. In the absence of conflict, the embodiments and features in the embodiments of this application can be combined with each other. Any combination of features in different embodiments is also within the protection scope of this application. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the protection scope of this application.

Claims

1. A rapid filtration device for use in detection, characterized in that, The application relates to a water sample filtering and collecting device. The device comprises: a filtering and collecting bottle (14) with a water sample inlet and a negative pressure generating inlet; a filtering host (2) matched with the negative pressure generating inlet for negative pressure regulation of the filtering and collecting bottle (14); a first filtering assembly comprising a first filter (3), a liquid storage bottle (5), a buffer bottle (8) and a first flow guide pipe (9) in sequence, a first valve (7) being arranged at the communication position of the liquid storage bottle (5) and the buffer bottle (8), a second valve (10) being arranged on the first flow guide pipe (9), the filtering host (2) being connected with the liquid storage bottle (5) for adjusting the internal pressure of the liquid storage bottle (5); a second filtering assembly comprising a second filter (11) and a second flow guide pipe (12) in sequence, the second filter (11) being connected with the port of the first flow guide pipe (9) away from the buffer bottle (8), the second flow guide pipe (12) being connected with the filtering and collecting bottle (14) away from the second filter (11), the filter hole value of the second filter (11) being smaller than that of the first filter (3); 2. The rapid filtration device for detection according to claim 1, wherein, wherein the first filter (3), the liquid storage bottle (5), the buffer bottle (8), the first flow guide pipe (9), the second filter (11), the second flow guide pipe (12) and the filtering and collecting bottle (14) are arranged in sequence along the gravity direction of the filtering host (2).

3. The rapid filtration device for detection according to claim 2, wherein, The bottom outlet of the first flow guide pipe (9) is arranged above the second filter (11) in interval.

4. The rapid filtration device for detection according to claim 3, wherein, The negative pressure generating structure of the filtering host (2) is communicated with the liquid storage bottle (5) and the filtering and collecting bottle (14) through a three-way valve (13).

5. The rapid filtration device for detection according to claim 1, wherein, The liquid storage bottle (5) is provided with a liquid level sensor (4).

6. The rapid filtration device for detection according to claim 1, wherein, The bottom of the filtering host (2) is provided with four rubber seats (1) distributed in a rectangular shape.

7. The rapid filtration device for detection according to claim 6, wherein, The first filter (3) and the second filter (11) both comprise a filter cylinder (15) and a filter core (17), the filter core (17) being detachably arranged in the filter cylinder (15). The inner side wall of the filter cylinder (15) is circumferentially provided with an annular platform (16), the filter core (17) being arranged on the upper side of the annular platform (16) and being threadedly matched with the inner side wall of the filter cylinder (15).

Images