Tandem type multi-stage suction filtration device

Abstract

The utility model discloses a tandem type multi-stage suction filtration device, which belongs to the technical field of filtering equipment and comprises a sample injection filtering bottle, a middle section filtering bottle and a receiving cup which are sequentially communicated from top to bottom in the Z-axis direction, filtering modules are arranged in the sample injection filtering bottle and the middle-section filtering bottle; the filtering aperture of the filtering module in the sample injection filtering bottle is larger than that of the filtering module in the middle-section filtering bottle; a sample injection filter bottle, a middle filter bottle and a receiving cup are sequentially arranged from top to bottom in the Z-axis direction, so that water samples can flow through corresponding filter modules one by one by utilizing gravity; the purpose of one-by-one interception can be achieved according to the granularity of impurities by ensuring that the filter holes of the filter module in the sample injection filter bottle are larger than the aperture of the filter module in the middle filter bottle, so that the influence of impurity accumulation on the filter efficiency is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of filtering equipment, and particularly relates to a series-type multi-stage suction filtering device. Background Art

[0002] Before testing water samples for indicators such as soluble heavy metals, seawater nutrients, or inorganic anions, the samples must generally be filtered. However, because the water samples being tested are often dirty and have complex water quality, the filtration process can easily lead to problems such as membrane clogging that affect filtration efficiency. As filtration time increases, the water samples can deteriorate, affecting the accuracy of test results. Utility Model Content

[0003] The technical problem to be solved by the utility model is: how to provide a series multi-stage filtration device which can improve the filtration efficiency while ensuring the filtration quality.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0005] A serial multi-stage filtration device comprises a sample inlet filter bottle, a middle filter bottle and a receiving cup which are sequentially connected from top to bottom in the Z-axis direction;

[0006] The interior of the sample inlet filter bottle and the interior of the middle filter bottle are both provided with filter modules;

[0007] The filtration pore size of the filtration module in the sample inlet filtration bottle is larger than the filtration pore size of the filtration module in the middle filtration bottle.

[0008] Furthermore, the sample inlet filter bottle includes a material holding cavity and a first flow guide cavity that are interconnected;

[0009] A filtering module is provided at the connection between the material holding cavity and the first flow guiding cavity.

[0010] Furthermore, the middle filter bottle includes a transition cavity and a second flow guide cavity that are interconnected;

[0011] A filter module is provided at the connection between the transition chamber and the second guide chamber;

[0012] The liquid outlet of the first guide cavity is arranged inside the transition cavity.

[0013] Further, the transition cavity includes an inclined surface;

[0014] The inclined surface forms an angle with the horizontal plane;

[0015] The liquid outlet of the first guide cavity and the inclined surface are arranged opposite to each other;

[0016] The liquid inlet of the second guide cavity is located at the lowest point of the middle filtering bottle.

[0017] Furthermore, the material holding cavity and the first flow guiding cavity are threadedly connected;

[0018] The transition chamber and the second guide chamber are threadedly connected.

[0019] Furthermore, the filtration module includes a filter sand core and a filter membrane;

[0020] The filter membrane is arranged on the filter sand core.

[0021] Furthermore, the number of the middle section filtering bottles is at least two;

[0022] The first guide cavity of the middle filter bottle of the previous stage is connected to the transition cavity of the middle filter bottle of the next stage;

[0023] From top to bottom along the Z-axis, the filtration aperture of the filtration module in the middle filter bottle gradually decreases.

[0024] Furthermore, a vacuum pump is included;

[0025] The vacuum pump is communicated with the transition chamber.

[0026] Further, a sealing member is included;

[0027] The connection between the material holding cavity and the first flow guiding cavity, as well as the connection between the transition cavity and the second flow guiding cavity are both provided with sealing elements.

[0028] Furthermore, it also includes a support frame;

[0029] The middle section filtering bottle is connected to the supporting portion of the corresponding supporting frame.

[0030] The beneficial effects of the present invention are as follows: the serial multi-stage filtration device provided by the present invention can utilize gravity to make the water sample flow through the corresponding filter modules one by one by arranging the sample feeding filter bottle, the middle filter bottle and the receiving cup in sequence from top to bottom in the Z-axis direction; by ensuring that the filter hole of the filter module in the sample feeding filter bottle is larger than the aperture of the filter module in the middle filter bottle, the purpose of intercepting the impurities one by one according to their particle size can be achieved, thereby avoiding the influence of the filtration efficiency due to the accumulation of impurities. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 Shown is a structural schematic diagram of a serial multi-stage filtration device according to a specific embodiment of the present utility model;

[0032] Figure 2 Shown is a front cross-sectional view of a serial multi-stage filtration device according to a specific embodiment of the present invention;

[0033] Description of labels:

[0034] 1. Sample injection filter bottle; 11. Material holding chamber; 12. First diversion chamber;

[0035] 2. Middle filter bottle; 21. Transition chamber; 211. Inclined surface; 22. Second diversion chamber;

[0036] 3. Receiving bottle;

[0037] 4. Filter module;

[0038] 5. Vacuum pump;

[0039] 6. Support frame. DETAILED DESCRIPTION

[0040] In order to explain the technical content, achieved objectives and effects of the present invention in detail, the following description is given in conjunction with the embodiments and the accompanying drawings.

[0041] The most critical concept of the utility model is that: with the help of gravity, the water sample to be filtered passes through the filter modules in the sample inlet filter bottle and the middle filter bottle in turn, so that the filtration work can be completed quickly; and by ensuring that the filter holes of the filter module in the sample inlet filter bottle are larger than the pore size of the filter module in the middle filter bottle, the purpose of intercepting impurities one by one according to their particle size can be achieved, thereby avoiding the impact of impurity accumulation on filtration efficiency.

[0042] Please refer to Figures 1 to 2 The utility model provides a serial multi-stage filtration device, comprising a sample inlet filter bottle 1, a middle filter bottle 2 and a receiving cup connected in sequence from top to bottom in the Z-axis direction;

[0043] The interior of the sample inlet filter bottle 1 and the interior of the middle filter bottle 2 are both provided with a filter module 4;

[0044] The filtration pore size of the filtration module 4 in the sample inlet filtration bottle 1 is larger than the filtration pore size of the filtration module 4 in the middle section filtration bottle 2 .

[0045] From the above description, it can be seen that the beneficial effects of the present invention are: providing a series multi-stage filtration device, by arranging the sampling filter bottle 1, the middle filter bottle 2 and the receiving cup in sequence from top to bottom in the Z-axis direction, gravity can be used to make the water sample flow through the corresponding filter module 4 one by one; by ensuring that the filter hole of the filter module 4 in the sampling filter bottle 1 is larger than the aperture of the filter module 4 in the middle filter bottle 2, the purpose of intercepting one by one according to the particle size of the impurities can be achieved; compared with the existing filtering equipment, it not only effectively increases the number of filtration times, but also can automatically intercept the corresponding impurities in the corresponding filter cavity according to the different particle sizes of the impurities, thereby avoiding the influence of the filtration efficiency due to the irregular accumulation of impurities.

[0046] Furthermore, the sample feeding filter bottle 1 comprises a material holding cavity 11 and a first flow guiding cavity 12 which are connected to each other;

[0047] A filter module 4 is provided at the connection between the material holding cavity 11 and the first flow guiding cavity 12 .

[0048] Furthermore, the middle filter bottle 2 includes a transition cavity 21 and a second flow guide cavity 22 which are interconnected;

[0049] A filter module 4 is provided at the connection between the transition chamber 21 and the second guide chamber 22;

[0050] The liquid outlet of the first flow guiding cavity 12 is arranged inside the transition cavity 21 .

[0051] Furthermore, the transition chamber 21 includes an inclined surface 211;

[0052] The inclined surface 211 forms an angle with the horizontal plane;

[0053] The liquid outlet of the first guide cavity 12 and the inclined surface 211 are arranged opposite to each other;

[0054] The liquid inlet of the second flow guiding cavity 22 is located at the lowest point of the middle filtering bottle 2 .

[0055] As can be seen from the above description, the design has made specific modifications to the composition structure of the sample inlet filter bottle 1 and the middle filter bottle 2, so as to provide structural support for the water samples to be filtered to flow through the corresponding filter modules 4 one by one; and an inclined surface is set inside the transition chamber 21, and the liquid inlet of the second guide chamber 22 is ensured to be located at the lowest point of the middle filter bottle 2, so that the filtered water sample can flow quickly to the next level of filter module 4, avoiding the problem of water sample deterioration due to long-term accumulation.

[0056] Furthermore, the material holding chamber 11 and the first flow guiding chamber 12 are threadedly connected;

[0057] The transition chamber 21 and the second flow guide chamber 22 are threadedly connected.

[0058] From the above description, it can be seen that this design enables the material holding chamber 11 and the first guide chamber 12, as well as the transition chamber 21 and the second guide chamber 22 to be detachably connected; as the working time increases, the filter module 4 will inevitably have clogging problems; therefore, a threaded structure that can be easily disassembled is provided, which can effectively improve the replacement efficiency of the filter module 4.

[0059] Furthermore, the filter module 4 includes a filter sand core and a filter membrane;

[0060] The filter membrane is arranged on the filter sand core.

[0061] Specifically, the filter sand core of the present invention is preferably quartz sand.

[0062] From the above description, it can be seen that the design has made specific modifications to the component structure of the filter module 4. The filter sand core can be used to filter large-particle impurities, and the filter membrane can be used to filter small-particle impurities; the filter sand core is set on the filter membrane, so that it can meet the filtering work of various impurities, thereby achieving the effect of improving the filtration accuracy.

[0063] Furthermore, the number of the middle filter bottles 2 is at least two;

[0064] The first guide cavity 12 of the middle filter bottle 2 of the previous stage is connected to the transition cavity 21 of the middle filter bottle 2 of the next stage;

[0065] From top to bottom along the Z-axis, the filtration aperture of the filtration module 4 in the middle filtration bottle 2 gradually decreases.

[0066] From the above description, it can be seen that the design has made specific improvements to the number of middle-section filter bottles 2. By increasing the number of middle-section filter bottles 2 and gradually reducing the filter aperture of the filter module 4 in the middle-section filter bottle 2 in the filtering direction of the water sample, the filtering accuracy of the water sample can be further improved, thereby providing a guarantee for the accuracy of the final detection data.

[0067] Furthermore, the above-mentioned series multi-stage filtration device further includes a vacuum pump 5;

[0068] The vacuum pump 5 is communicated with the transition chamber 21 .

[0069] Furthermore, the above-mentioned serial multi-stage filtration device further includes a sealing member;

[0070] Sealing elements are provided at the connection between the material holding chamber 11 and the first flow guiding chamber 12 , and at the connection between the transition chamber 21 and the second flow guiding chamber 22 .

[0071] Specifically, in order to improve the overall filtration efficiency, the receiving cup can also be connected to the vacuum pump 5 when necessary; and the vacuum pump 5 can also be connected to the first guide cavity 12 or the second guide cavity 22. At this time, the suction force of the vacuum pump 5 is controlled to avoid the filtered water sample being sucked into the interior of the vacuum pump 5 due to excessive suction force, thereby affecting the filtration effect.

[0072] From the above description, it can be seen that in the middle and late stages of the filtration work, as the amount of intercepted impurities gradually increases, the overall filtration efficiency will gradually decrease; therefore, by connecting the vacuum pump 5 to the corresponding position of the filter chamber, the water sample that has not been filtered can obtain a power source to move to the next level of filter membrane under the action of negative pressure, thereby effectively improving the overall work efficiency; at the same time, seals are provided at the connection between the material holding chamber 11 and the first guide chamber 12, as well as at the connection between the transition chamber 21 and the second guide chamber 22, which can better improve the sealing between the overall structure, thereby avoiding the destruction of the vacuum environment due to gas leakage, and ultimately affecting the filtration efficiency.

[0073] Furthermore, the above-mentioned serial multi-stage filtration device further includes a support frame 6;

[0074] The middle filter bottle 2 is connected to the supporting portion of the corresponding support frame 6 .

[0075] From the above description, it can be seen that as the number of middle-section filter bottles 2 continues to increase, the equipment is prone to overturning due to center offset. Therefore, fixing the corresponding middle-section filter bottle 2 on the support frame 6 can effectively improve the stability of the middle-section filter bottle 2.

[0076] The serial multi-stage filtration device of the utility model can assist in the filtration of water samples.

[0077] Please refer to Figures 1 to 2 , the first embodiment of the present utility model is:

[0078] A series multi-stage filtration device includes a vacuum pump 5, a seal, a support frame 6, and a sampling filter bottle 1, a middle filter bottle 2 and a receiving cup that are connected in sequence from top to bottom in the Z-axis direction; the interior of the sampling filter bottle 1 and the interior of the middle filter bottle 2 are both provided with a filter module 4; the filter aperture of the filter module 4 in the sampling filter bottle 1 is larger than the filter aperture of the filter module 4 in the middle filter bottle 2; there are two middle filter bottles 2; the first guide cavity 12 of the middle filter bottle 2 of the upper stage is connected to the transition cavity 21 of the middle filter bottle 2 of the lower stage; from top to bottom along the Z-axis direction, the filter aperture of the filter module 4 in the middle filter bottle 2 gradually decreases; the filter module 4 includes a filter sand core and two layers of filter membranes; the filter sand core is sandwiched between the two layers of filter membranes.

[0079] The sampling filter bottle 1 includes a material holding chamber 11 and a first guide chamber 12 which are interconnected; a filter module 4 is provided at the connection between the material holding chamber 11 and the first guide chamber 12; the middle filter bottle 2 includes a transition chamber 21 and a second guide chamber 22 which are interconnected; a filter module 4 is provided at the connection between the transition chamber 21 and the second guide chamber 22; the liquid outlet of the first guide chamber 12 is arranged inside the transition chamber 21; the transition chamber 21 includes an inclined surface 211; the inclined surface 211 is at an angle to the horizontal plane; the liquid outlet of the first guide chamber 12 and the inclined surface 211 are arranged opposite to each other; the liquid inlet of the second guide chamber 22 is located at the lowest point of the middle filter bottle 2; the material holding chamber 11 and the first guide chamber 12 are threadedly connected; the transition chamber 21 and the second guide chamber 22 are threadedly connected; the vacuum pump 5 is connected to the transition chamber 21; the connection between the material holding chamber 11 and the first guide chamber 12, as well as the connection between the transition chamber 21 and the second guide chamber 22 are both provided with sealing members; the middle filter bottle 2 is connected to the support portion of the corresponding support frame 6.

[0080] The working principle of the present invention is as follows: first, the water sample to be filtered is poured into the sample filter bottle 1; then, the vacuum pump 5 is started, and under the action of the vacuum pump 5, the water sample to be filtered flows through the corresponding filter module 4 in sequence; finally, the water sample that has been filtered multiple times is received by the receiving bottle 3 to prepare for subsequent detection work.

[0081] The vacuum pumps 5 can be started simultaneously, or one by one from high to low in the Z-axis direction; they can even be started according to the actual blockage situation, that is, when the sampling filter bottle 1 or a middle filter bottle 2 is blocked, the vacuum pump of the middle filter bottle 2 of the next level connected to the sampling filter bottle 1 or the middle filter bottle 2 is started.

[0082] In summary, the utility model provides a series-type multi-stage filtration device, which can use gravity to make water samples flow through the corresponding filter modules one by one by arranging the sample feeding filter bottle, the middle filter bottle and the receiving cup in sequence from top to bottom in the Z-axis direction; by ensuring that the filter hole of the filter module in the sample feeding filter bottle is larger than the aperture of the filter module in the middle filter bottle, the purpose of intercepting impurities one by one can be achieved according to the particle size of impurities; compared with the existing filtering equipment, it not only effectively increases the number of filtration times, but also can automatically intercept the corresponding impurities in the corresponding filter cavity according to the different particle sizes of impurities, thereby avoiding impurities from being randomly filtered. The accumulation of impurities will affect the filtration efficiency; and in the middle and late stages of the filtration work, as the amount of impurities intercepted gradually increases, the overall filtration efficiency will gradually decrease; therefore, by connecting the vacuum pump to the corresponding position of the filter chamber, the water sample that has not been filtered can obtain the power source to move to the next level of filter membrane under the action of negative pressure, thereby effectively improving the overall work efficiency; at the same time, sealing members are provided at the connection between the material chamber and the first guide chamber, as well as at the connection between the transition chamber and the second guide chamber, which can better improve the sealing between the overall structure, thereby avoiding the destruction of the vacuum environment due to gas leakage, and ultimately affecting the filtration efficiency.

[0083] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent transformations made using the contents of the description and drawings of the present invention, or directly or indirectly applied in the relevant technical field, are also included in the patent protection scope of the present invention.

Claims

1. A series multi-stage filtration device, characterized in that: The invention comprises a sample injection filter bottle, a middle filter bottle and a receiving cup which are sequentially connected from top to bottom in the Z-axis direction; The interior of the sample inlet filter bottle and the interior of the middle filter bottle are both provided with filter modules; The filtration pore size of the filtration module in the sample inlet filtration bottle is larger than the filtration pore size of the filtration module in the middle filtration bottle.

2. The serial multi-stage filtration device according to claim 1, characterized in that: The sample inlet filter bottle comprises a material holding cavity and a first flow guiding cavity which are communicated with each other; A filtering module is provided at the connection between the material holding cavity and the first flow guiding cavity.

3. The serial multi-stage filtration device according to claim 2, characterized in that: The middle section filtering bottle comprises a transition cavity and a second diversion cavity which are interconnected; A filter module is provided at the connection between the transition chamber and the second guide chamber; The liquid outlet of the first guide cavity is arranged inside the transition cavity.

4. The serial multi-stage filtration device according to claim 3, characterized in that: The transition cavity includes an inclined surface; The inclined surface forms an angle with the horizontal plane; The liquid outlet of the first guide cavity and the inclined surface are arranged opposite to each other; The liquid inlet of the second guide cavity is located at the lowest point of the middle filtering bottle.

5. The serial multi-stage filtration device according to claim 4, characterized in that: The material holding cavity and the first flow guide cavity are threadedly connected; The transition chamber and the second guide chamber are threadedly connected.

6. The serial multi-stage filtration device according to claim 1, characterized in that: The filtration module includes a filtration sand core and a filtration membrane; The filter membrane is arranged on the filter sand core.

7. The serial multi-stage filtration device according to claim 3, characterized in that: The number of the middle section filtering bottles is at least two; The first guide cavity of the middle filter bottle of the previous stage is connected to the transition cavity of the middle filter bottle of the next stage; From top to bottom along the Z-axis, the filtration aperture of the filtration module in the middle filter bottle gradually decreases.

8. The serial multi-stage filtration device according to claim 3, characterized in that: Also includes a vacuum pump; The vacuum pump is communicated with the transition chamber.

9. The serial multi-stage filtration device according to claim 8, characterized in that: Also included are seals; The connection between the material holding cavity and the first flow guiding cavity, as well as the connection between the transition cavity and the second flow guiding cavity are both provided with sealing elements.

10. The serial multi-stage filtration device according to claim 7, characterized in that: Also includes a support frame; The middle section filtering bottle is connected to the supporting portion of the corresponding supporting frame.

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