Water sample pretreatment mechanism

Abstract

The utility model discloses a water sample pretreatment mechanism which comprises a box body, a water inlet arranged at the upper end of the box body and a water outlet arranged at the lower end of the box body, a plurality of sliding plates are arranged in the box body from bottom to top, a first groove is arranged in the middle of the sliding plate at the uppermost end, and a filter membrane is arranged in the first groove. A second groove is formed in the middle of the middle sliding plate, filter paper is arranged in the second groove, and a positioning groove used for positioning a sand core funnel is formed in the middle of the sliding plate at the lowest end. Different sliding plates can be used according to different requirements, when only coarse filtration is needed, the two sliding plates on the lower layer are pulled out, if higher-precision filtration is needed, the sliding plate on the middle layer or the lowest layer is inserted into the box body, and different filtration requirements can be met.

Description

Technical Field

[0001] This utility model relates to the field of water sample testing technology, specifically a water sample pretreatment mechanism. Background Technology

[0002] Sample pretreatment is currently a bottleneck in analytical testing and a weak link in research both domestically and internationally, yet it is also extremely important. Because contamination of samples or losses due to adsorption, volatilization, etc., often lead to inaccurate monitoring results or even erroneous conclusions, the sample pretreatment process is a crucial step in ensuring the accuracy of monitoring results.

[0003] In the pretreatment process of water samples, it is necessary to filter the water sample to remove residues and bacteria or algae. The order of residue retention capacity is: filter membrane > filter paper > sand core funnel. There is a utility model patent with application number 201620036002.0, entitled "A Water Sample Pretreatment Device", which includes a cover (1), a filter screen (2), and a water container (3). The cover (1) matches the top surface of the water container (3), and a support platform (31) is provided on the inner side wall of the water container (3). The filter screen (2) is set on the support platform (31). However, this method only sets one layer of filter screen and cannot achieve multiple filtration methods. Utility Model Content

[0004] The purpose of this invention is to solve the above problems and provide a water sample pretreatment mechanism that can achieve multiple filtration methods for water samples to meet different filtration needs.

[0005] The technical solution adopted by this utility model to solve its technical problem is:

[0006] A water sample pretreatment mechanism includes a box, an inlet located at the upper end of the box, and an outlet located at the lower end of the box. The box contains a plurality of sliding plates arranged from bottom to top. The uppermost sliding plate has a first groove in the middle, in which a filter membrane is placed. The middle sliding plate has a second groove in the middle, in which filter paper is placed. The bottom of the second groove has a conical groove. The lowermost sliding plate has a positioning groove in the middle for positioning a sand core funnel.

[0007] Furthermore, a first baffle is provided at the lower end of the water inlet, and the first baffle is provided with symmetrical arc-shaped through holes.

[0008] Furthermore, a second baffle is provided at both the front and rear ends of the skateboard.

[0009] Furthermore, a sealing ring is provided at the position where the second baffle contacts the front side wall of the box.

[0010] Furthermore, a handle is provided on the second baffle at the front end.

[0011] Furthermore, the two side walls of the box are provided with sliding grooves that cooperate with the sliding plate.

[0012] The beneficial effects of this utility model are:

[0013] This invention features several sliding plates arranged from bottom to top within a housing. The uppermost sliding plate has a first groove in the middle, containing a filter membrane. The middle sliding plate has a second groove in the middle, containing filter paper. The lowermost sliding plate has a positioning groove in the middle for positioning the sand core funnel. Different sliding plates can be used according to different needs. For coarse filtration, the bottom two sliding plates are removed; for higher precision filtration, the middle or bottom sliding plates are inserted into the housing, thus meeting various filtration requirements.

[0014] This utility model has a conical groove at the bottom of the second groove, which serves to collect the water sample, allowing the water sample to be collected together. At the bottommost part of the slide plate, there is a positioning groove for positioning the sand core funnel. The center line of the positioning groove overlaps with the center line of the conical groove, ensuring that the water sample can fall completely into the sand core funnel. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a top view of the present invention;

[0018] Figure 3 This is a cross-sectional view of the uppermost sliding plate of this utility model;

[0019] Figure 4 This is a cross-sectional view of the middle sliding plate of this utility model;

[0020] Figure 5 This is a cross-sectional view of the bottommost sliding plate of this utility model.

[0021] In the diagram: 1. Box body; 2. Inlet; 3. Outlet; 4. Slide plate; 5. First groove; 6. Filter membrane; 7. Second groove; 8. Filter paper; 9. Conical groove; 10. Positioning groove; 11. First baffle; 12. Arc-shaped through hole; 13. Second baffle; 14. Handle. Detailed Implementation

[0022] To enable those skilled in the art to better understand the technical solutions of this utility model, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0023] like Figure 1 , Figures 3 to 5 As shown, a water sample pretreatment mechanism includes a housing 1, an inlet 2 located at the upper end of the housing 1, and an outlet 3 located at the lower end of the housing 1. The inlet 2 is an inverted conical groove, and the outlet 3 is equipped with a valve. Several sliding plates 4 are arranged inside the housing 1 from bottom to top. The uppermost sliding plate 4 has a first groove 5 in the middle position, and a through hole at the bottom of the first groove 5. A filter membrane 6 is arranged in the first groove 5, and the filter membrane 6 is reliably positioned at the bottom of the first groove 5. The middle sliding plate 4 has a second groove 7 in the middle position, and a filter paper 8 is arranged in the second groove 7, and the filter paper 8 is reliably positioned at the bottom of the second groove 7. The bottom of the second groove 7 has a conical groove 9, which serves to collect the water sample, allowing the water sample to be collected together. The lowermost sliding plate 4 has a positioning groove 10 in the middle position for positioning a sand core funnel. The center line of the positioning groove 10 overlaps with the center line of the conical groove 9, ensuring that the water sample can fall completely into the sand core funnel. Different slides can be used according to different needs. When coarse filtration is needed, the two slides at the bottom can be pulled out. If higher precision filtration is required, the middle or bottom slides can be inserted into the housing 1. This can meet different filtration requirements.

[0024] like Figure 2 As shown, the lower end of the water inlet 2 is provided with a first baffle 11, and the first baffle 11 is symmetrically provided with arc-shaped through holes 12. The first baffle 11 disperses the water sample and causes it to fall along the arc-shaped through holes 12, so that the water sample falls in a dispersed manner, resulting in a good filtration effect.

[0025] like Figures 3 to 5 As shown, the slide plate 4 is provided with a second baffle 13 at both the front and rear ends. The baffles serve to position and seal the water sample to prevent it from overflowing. When the slide plate is pulled out, the inner baffle blocks the opening at the front of the box 1. After the slide plate is inserted into the box 1, the outer baffle blocks the opening at the front of the box 1 to prevent the water sample from flowing out of the opening.

[0026] A sealing ring is provided at the position where the second baffle 13 contacts the front side wall of the housing 1.

[0027] A handle 14 is provided on the second baffle 13 at the front end to facilitate the removal of the processing slide.

[0028] The two side walls of the box 1 are provided with sliding grooves that cooperate with the sliding plate 4, and the sliding grooves guide the movement direction of the sliding plate 4.

[0029] In the description of this utility model, it should be noted that the terms "left", "right", "up", "down", etc., 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, and 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. Therefore, they should not be construed as limitations on this utility model.

[0030] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

Claims

1. A water sample pretreatment mechanism, comprising a housing (1), an inlet (2) disposed at the upper end of the housing (1), and an outlet (3) disposed at the lower end of the housing (1), characterized in that, The box (1) is provided with several sliding plates (4) from bottom to top. The uppermost sliding plate (4) has a first groove (5) in the middle position, and a filter membrane (6) is provided in the first groove (5). The middle sliding plate (4) has a second groove (7) in the middle position, and a filter paper (8) is provided in the second groove (7). The bottom of the second groove (7) has a conical groove (9). The lowermost sliding plate (4) has a positioning groove (10) for positioning the sand core funnel in the middle position.

2. The water sample pretreatment mechanism as described in claim 1, characterized in that, The lower end of the water inlet (2) is provided with a first baffle (11), and the first baffle (11) is provided with symmetrical arc-shaped through holes (12).

3. The water sample pretreatment mechanism as described in claim 1, characterized in that, The skateboard (4) is equipped with a second baffle (13) at both the front and rear ends.

4. A water sample pretreatment mechanism as described in claim 3, characterized in that, A sealing ring is provided at the position where the second baffle (13) contacts the front side wall of the box (1).

5. A water sample pretreatment mechanism as described in claim 3, characterized in that, A handle (14) is provided on the second baffle (13) at the front end.

6. The water sample pretreatment mechanism as described in claim 1, characterized in that, The box (1) has grooves on both sides that cooperate with the slide plate (4).

Images