A sewage filtering device for environmental testing

Abstract

The present application relates to the technical field of sewage detection, and discloses a sewage filtering device for environmental detection, comprising a connecting member, a first member connected to the upper end of the connecting member, and a second member connected to the lower end of the connecting member; the connecting member is provided with a blocking member for blocking or opening the lower end of the first member, a sliding plate is slidably connected to the connecting member, and the sliding plate is provided with no less than two placement slots for placing filter paper, the bottom surface of the placement slot is a porous structure, and the sliding plate is slid, one of the placement slots can be located below the first member, and the other placement slots are located outside the connecting member. The present application can facilitate the replacement of filter paper when filtering sewage.

Description

Technical Field

[0001] The present application relates to the technical field of sewage detection equipment, and in particular to a sewage filtering device for environmental detection. Background Art

[0002] Sewage testing is a crucial task in environmental testing. Sewage sampling is performed using a sampling device and then analyzed. However, since sewage sampling is done outdoors, it often contains a lot of sediment, requiring filtration to remove impurities.

[0003] Reference Figure 1 The filtering device in the related art mainly includes a first tube 1, a second tube 2 and a connecting tube 3 connected between the first tube 1 and the second tube 2. The lower end of the first tube 1 is an open structure, the connecting tube 3 is an internal hollow structure, and the upper end surface has a porous structure. The lower end of the connecting tube 3 is inserted into the upper end opening of the second tube 2; the filter paper is placed at the upper end opening of the connecting tube 3, the lower end of the first tube 1 is abutted against the upper end of the connecting tube 3, and then the first tube 1 and the connecting tube 3 are clamped by a clip, and the sewage is poured into the first tube 1. The sewage can penetrate downward through the filter paper and flow into the second tube 2 for collection.

[0004] Since sewage sampling is done outdoors, the sewage contains a lot of sediment, and the filter paper often gets clogged during the filtration process. Therefore, the filter paper needs to be replaced frequently during the filtration process. When replacing the filter paper, the clamp needs to be removed and then the first tube is removed, and then the new filter paper is replaced. The operation is troublesome and takes more time. Summary of the Invention

[0005] In order to facilitate the replacement of filter paper, the present application provides a sewage filtering device for environmental testing.

[0006] This application adopts the following technical solutions:

[0007] 4. The repairing kit for automotive dents, according to claim 1, wherein a bottom of the foot stand comprises a through-hole, and the two foot pieces comprise two bosses, wherein the bosses comprise a through-hole, a screw bolt, and a nut. The through-hole comprises a first end, a second end, and a second end of a screw bolt. The through-hole comprises a first end, and a second end of a screw bolt comprises a second end. The bosses comprise a through-hole, a second end, and a second end of a screw bolt.

[0008] By adopting the above technical solution, the first piece is installed on the connection. When the rotating block is rotated so that the first hole and the second hole coincide with each other, the sewage can flow downward and be filtered through the filter paper in the placement groove. When the filter paper needs to be replaced, the rotating block is rotated so that the first hole and the second hole are staggered, and then the sliding plate is slid so that the placement groove slides out to the outside of the connector, and the filter paper can be replaced.

[0009] Optionally, the sliding block is connected to the mounting groove by sliding up and down, and an abutment ring is provided on the side of the sliding block facing away from the rotating block. The abutment ring is slidably provided on the sliding block, and an elastic member is provided between the abutment ring and the sliding block. When the sliding block moves toward the direction close to the placement groove, the abutment ring can abut against the bottom surface of the placement groove.

[0010] By adopting the above technical solution, when the sliding block slides downward, the abutment ring can first abut against the filter paper, thereby positioning the filter paper, and when the abutment ring is in use, the surface will be moistened, and the abutment ring abutting against the filter paper can better position the filter paper.

[0011] Optionally, the connecting member is provided with a sliding groove on the inner wall of the mounting groove, the sliding block is provided with a guide block extending in the sliding groove, a return spring is provided on the side of the guide block facing away from the rotating block, and the other end of the return spring is connected to the bottom surface of the sliding groove; when the sliding block moves toward the placement groove, the return spring is in a compressed state.

[0012] By adopting the above technical solution, pressing the first piece downward can drive the sliding block to slide downward, driving the abutment ring to abut against the filter paper, thereby enabling filtering.

[0013] Optionally, two first holes are symmetrically arranged, and two second holes are symmetrically arranged.

[0014] By adopting the above technical solution, two first holes and two second holes are symmetrically provided, which facilitates sealing of the first piece during rotation.

[0015] Optionally, a ring protrusion for receiving the first piece is provided on a side of the rotating block facing away from the sliding block.

[0016] By adopting the above technical solution, the first piece and the rotating block are easily connected.

[0017] Optionally, the connecting member is further provided with a plug-in slot, the sliding plate is slidably plugged into the plug-in slot, and a step edge is provided at the end of the sliding plate. When the sliding plate slides into the plug-in slot, the step edge can abut against the side wall of the connecting member.

[0018] By adopting the above technical solution, the sliding plate can slide conveniently, and the step edge abuts against the outer wall of the connecting piece, so that the sliding position of the sliding plate can be conveniently controlled.

[0019] Optionally, a connecting tube for plugging in the second piece is provided at the lower end of the connecting piece, a spherical portion is provided on the side wall of the connecting tube, the diameter of the spherical portion is larger than the diameter of the connecting tube, and a negative pressure tube is connected to the side wall of the spherical portion.

[0020] By adopting the above technical solution, the negative pressure pipe can be connected to a vacuum pump and other devices, which can generate negative pressure in the connecting part, which is beneficial to the filtration efficiency.

[0021] Optionally, a latch is slidably inserted into the outer wall of the connector, and a socket is provided on the side wall of the sliding plate. When the sliding plate slides into the socket groove, the latch can be inserted into the socket.

[0022] By adopting the above technical solution, during filtering, the latch can be inserted into the socket, thereby improving the stability of the sliding plate during filtering.

[0023] In summary, this application has at least one of the following beneficial effects:

[0024] 1. A placement slot is provided on the sliding plate, and the filter paper can be placed in the placement slot. By sliding the sliding plate, the filter paper to be replaced can be slid out for replacement. During the replacement process, the first piece can be sealed by the sealing piece to maintain the sealing during replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the relevant technical structure;

[0026] Figure 2 It is a structural diagram of an embodiment of the present application;

[0027] Figure 3 It is an exploded schematic diagram of an embodiment of the present application;

[0028] Figure 4 This is a schematic diagram of the explosion of the sealing part;

[0029] Figure 5 It is an exploded diagram of the sliding block and the rotating block;

[0030] Figure 6 It is a schematic diagram showing the ring groove;

[0031] Figure 7 It is a structural diagram of the sliding plate.

[0032] Explanation of the accompanying drawings: 1. First tube; 2. Second tube; 3. Connecting tube; 4. First piece; 5. Connecting piece; 6. Second piece; 7. Sealing piece; 71. Sliding block; 72. Rotating block; 8. Sliding plate; 9. Placement groove; 10. Installation groove; 11. First hole; 12. Second hole; 13. Abutment ring; 14. Elastic piece; 15. Ring groove; 16. Sliding groove; 17. Guide block; 18. Return spring; 19. Pin; 20. Insertion hole; 21. Step edge; 22. Connecting tube; 23. Spherical part 24. Negative pressure tube; 25. Elastic ring; 26. Ring convex; 27. Insertion groove; 28. Positioning convex; 29. Handle. DETAILED DESCRIPTION

[0033] The following is combined with Figure 2-7 This application is described in further detail.

[0034] The embodiment of the present application discloses a sewage filtering device for environmental detection. Figure 2 The filtration device includes a connector 5, a first member 4 mounted on the upper end of the connector 5, and a second member 6 mounted on the lower end of the connector 5. The first member 4 is open at both ends and has a larger upper portion and a smaller lower portion. The connector 5 is a block-shaped structure. Sewage is poured into the first member 4, filtered through the connector 5, and then flows into the second member 6.

[0035] Reference Figure 3 and Figure 4, a sliding plate 8 is slidably connected to the connector 5, and a plug-in slot 27 is provided on the connector 5, and the plug-in slot 27 passes through one side wall of the connector 5. The sliding plate 8 is horizontally plugged into the plug-in slot 27, so that the sliding plate 8 can slide. A mounting slot 10 is provided on the upper surface of the connector 5, and the mounting slot 10 is connected to the plug-in slot 27, and the mounting slot 10 passes through the lower surface of the connector 5. A placement slot 9 is also provided on the sliding plate 8, and the bottom surface of the placement slot 9 is a porous structure, and the placement slot 9 is used to place filter paper. When the sliding plate 8 slides into the connector 5, the placement slot 9 is located directly below the installation slot 10. A step edge 21 is fixed to the end of the sliding plate 8, and the step edge 21 can now abut against the outer wall of the connector 5. In order to facilitate the sliding of the sliding plate 8, a handle 29 is fixed on the step edge 21.

[0036] A blocking member 7 is also installed in the mounting groove 10. The blocking member 7 is used to block or open the first member 4, so that when the sliding plate 8 is slid, the first member 4 can be blocked first. After the filter paper on the sliding plate 8 is replaced and slides into the slot 27, the first member 4 can be opened to continue filtering sewage.

[0037] Reference Figure 4 and Figure 5 The sealing member 7 includes a sliding block 71 that slides up and down in the mounting groove 10, and a rotating block 72 that is rotatably connected to the sliding block 71 by means of a bearing or the like. The sliding block 71 and the rotating block 72 are both circular in cross-section and are coaxially arranged. A rotating shaft can be fixed to the lower surface of the rotating block 72, and the rotating shaft is rotatably connected to the sliding block 71, so that the rotating block 72 and the sliding block 71 can be rotatably connected. The sliding block 71 is provided with a first hole 11, and the rotating block 72 is provided with a second hole 12. When the rotating block 72 rotates, the first hole 11 and the second hole 12 coincide with each other, and the water in the first member 4 can flow through the second hole 12 and the first hole 11 in sequence, and flow to the placement groove 9 to be filtered by the filter paper. The filtered water continues to flow downward and flows into the second member 6. When the first hole 11 and the second hole 12 are staggered, the first member 4 can be blocked. Two first holes 11 are symmetrically provided, and two second holes 12 are symmetrically provided, which makes it easier to control the opening and closing of the first member 4.

[0038] Furthermore, guide blocks 17 are symmetrically fixed on both sides of the sliding block 71, and a sliding groove 16 for the guide block 17 to slide is opened on the inner wall of the installation groove 10. A return spring 18 is also installed between the inner bottom surface of the guide block 17 and the sliding groove 16. Under the action of the return spring 18, there is a certain distance between the sliding block 71 and the placement groove 9. An abutment ring 13 is also slidably installed on the lower surface of the sliding block 71, and the abutment ring 13 and the sliding block 71 are coaxially arranged. Figure 6The sliding block 71 is provided with an annular groove 15, and an elastic member 14 is installed in the annular groove 15. The elastic member 14 can be a spring, and multiple elastic members 14 are arranged at intervals along the circumference of the abutment ring 13. The abutment ring 13 is slidably connected to the annular groove 15. The diameter of the abutment ring 13 is smaller than the diameter of the placement groove 9. When the sliding block 71 slides downward, the return spring 18 is compressed, and the abutment ring 13 first abuts the bottom surface of the placement groove 9, so that the abutment ring 13 can abut on the filter paper to position the filter paper. As the sliding block 71 continues to slide downward, the abutment ring 13 begins to slide into the annular groove 15, and the elastic member 14 is compressed.

[0039] Reference Figure 3 and Figure 4 The upper surface of the rotating block 72 is fixed with an upwardly extending annular protrusion 26. The annular protrusion 26 can be inserted into the lower end of the first member 4 through an interference fit, thereby connecting the first member 4 to the rotating block 72. When the first member 4 and the annular protrusion 26 are connected, there is sufficient sealing. The lower end of the connecting member 5 is mounted with a connecting pipe 22. The connecting pipe 22 is located directly below the mounting groove 10. During filtration, the upper end opening of the connecting pipe 22 corresponds to the placement groove 9. The lower end of the connecting pipe 22 can be inserted into the upper end opening of the second member 6, so that the filtered sewage can flow into the second member 6 for collection. The connecting pipe 22 is also integrally provided with a spherical portion 23. The diameter of the spherical portion 23 is larger than the diameter of the connecting pipe 22. A negative pressure pipe 24 is connected to the side wall of the spherical portion 23. The negative pressure pipe 24 can be connected to a device such as a vacuum pump to generate a certain negative pressure in the connecting pipe 22, thereby improving the efficiency of sewage filtration.

[0040] During filtration, the first member 4 is connected to the rotating block 72 via the annular protrusion 26. The first member 4 and the rotating block 72 are rotated synchronously, causing the first hole 11 and the second hole 12 to be offset. At this time, the first member 4 cannot penetrate downward. The first member 4 is then pressed downward, causing the sliding block 71 to move downward, compressing the reset member 18 and driving the abutment ring 13 to move downward synchronously. The lower end of the abutment ring 13 can first abut the filter paper in the placement groove 9. The sliding block 71 is further slid downward, compressing the elastic member 14. The rotating block 72 is then rotated, causing the first hole 11 and the second hole 12 to overlap. The sewage in the first member 4 can flow downward and be filtered by the filter paper in the inner cavity of the abutment ring 13. The abutment ring 13 abuts the filter paper under the elastic force of the elastic member 14, making it difficult for the sewage to leak from the lower end of the abutment ring 13.

[0041] When the filter paper needs to be replaced, the rotating block 72 is rotated to stagger the first hole 11 and the second hole 12, so that the sewage in the first piece 4 can no longer flow downward. Then, after the remaining sewage in the abutment ring 13 is filtered, the force on the sliding block 71 is removed. Under the action of the reset member 18, the sliding block 71 can slide upward and drive the abutment ring 13 to slide upward synchronously. The abutment ring 13 and the placement groove 9 are separated, and then the sliding plate 8 can be slid horizontally. Before the sliding plate 8 slides, the sewage has been filtered and the first piece 4 is in a closed state, so that it is not easy for sewage to flow out when the sliding plate 8 slides.

[0042] Combine Figure 4 and Figure 7 Furthermore, a latch 19 is slidably inserted into the side wall of the connector 5, and a socket 20 is provided on the side wall of the sliding plate 8. When the sliding plate 8 slides into the connector 5, the latch 19 can be inserted into the socket 20 to position the sliding plate. After sliding the latch 19 out of the socket 20, the sliding plate 8 can be slid by holding the handle 29. The height of the insertion groove 27 is adapted to the height of the sliding plate 8, thereby improving the stability of the sliding plate 8 when sliding. Positioning protrusions 28 are fixed on the two side walls of the sliding plate 8 away from the step 21. The inner wall of the insertion groove 27 is correspondingly provided with a slot for the positioning protrusion 28 to slide, and the slot does not completely penetrate the side wall of the connector 5, so that the sliding plate 8 is not easy to completely detach from the connector 5.

[0043] The implementation principle of the sewage filtering device for environmental testing in the embodiment of the present application is as follows: when filtering is required, the first piece 4 is held and rotated, driving the rotating block 72 to rotate so that the first hole 11 and the second hole 12 are staggered, and then the first piece 4 is squeezed downward so that the sliding block 71 can move downward, the reset piece 18 is compressed, the abutment ring 13 moves downward, and the abutment ring 13 can abut on the filter paper, thereby positioning the filter paper. Then the first piece 4 is rotated and the rotating block 72 is driven to rotate so that the first hole 11 and the second hole 12 coincide with each other, and the sewage in the first piece 4 can flow downward into the inner cavity of the abutment ring 13 and be filtered through the filter paper. When the filter paper needs to be replaced, the first member 4 is rotated and the rotating block 72 is simultaneously rotated, so that the first hole 11 and the second hole 12 are staggered. This is maintained for a period of time to allow the sewage remaining in the inner cavity of the abutment ring 13 to be filtered. The force on the first member 4 is then removed, allowing the sliding block 71 to move upward, and simultaneously driving the abutment ring 13 upward. During this process, the first member 4 is in a blocked state and will not leak, and the sewage in the connecting member 5 has been filtered. The sliding plate 8 is then slid to replace the filter paper.

[0044] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A sewage filtering device for environmental testing, characterized in that: The invention comprises a connecting member (5), a first member (4) connected to the upper end of the connecting member (5), and a second member (6) connected to the lower end of the connecting member (5); the connecting member (5) is provided with a blocking member (7) for blocking or opening the lower end of the first member (4); a sliding plate (8) is slidably connected to the connecting member (5); a placement groove (9) for placing filter paper is provided on the sliding plate (8); the bottom surface of the placement groove (9) is a porous structure, and the sliding plate (8) is slid, and the placement groove (9) can be located below the first member (4); a mounting groove (10) is provided on the connecting member (5), and the filter paper is placed on the sliding plate (8). The mounting groove (10) passes through the lower end of the connecting member (5) and corresponds to the second member (6); the blocking member (7) includes a sliding block (71) connected to the mounting groove (10) and a rotating block (72) rotatably connected to the sliding block (71); the lower end of the first member (4) is connected to a side of the rotating block (72) facing away from the sliding block (71); the sliding block (71) is provided with a first hole (11), and the rotating block (72) is provided with a second hole (12); when the rotating block (72) is rotated, the first hole (11) and the second hole (12) can overlap or stagger with each other; The sliding block (71) is connected to the mounting groove (10) by sliding up and down. A contact ring (13) is provided on the side of the sliding block (71) facing away from the rotating block (72). The contact ring (13) is slidably provided on the sliding block (71), and an elastic member (14) is provided between the contact ring (13) and the sliding block (71). The sliding block (71) is provided with an annular groove (15). The contact ring (13) is slidably connected to the annular groove (15), and the elastic member (14) is installed in the annular groove (15); when the sliding block (71) moves in a direction close to the placement groove (9), the contact ring (13) can contact the bottom surface of the placement groove (9), so that the contact ring (13) can contact the filter paper to position the filter paper; The connecting member (5) is provided with a sliding groove (16) on the inner wall of the mounting groove (10); the sliding block (71) is provided with a guide block (17) extending in the sliding groove (16); a return spring (18) is provided on the side of the guide block (17) facing away from the rotating block (72); the other end of the return spring (18) is connected to the bottom surface of the sliding groove (16); when the sliding block (71) moves in a direction close to the placement groove (9), the return spring (18) is in a compressed state; A ring protrusion (26) for inserting the first piece (4) is provided on the side of the rotating block (72) facing away from the sliding block (71).

2. A sewage filtering device for environmental testing according to claim 1, characterized in that: Two first holes (11) are symmetrically arranged, and two second holes (12) are symmetrically arranged.

3. The sewage filtering device for environmental testing according to claim 2, characterized in that: The connecting member (5) is further provided with a plug-in slot (27), and the sliding plate (8) is slidably plugged into the plug-in slot (27). The end of the sliding plate (8) is provided with a stepped edge (21), and when the sliding plate (8) slides into the plug-in slot (27), the stepped edge (21) can abut against the side wall of the connecting member (5).

4. A sewage filtering device for environmental testing according to claim 3, characterized in that: The lower end of the connecting piece (5) is provided with a connecting pipe (22) for plugging into the second piece (6), and the side wall of the connecting pipe (22) is provided with a spherical portion (23), the diameter of the spherical portion (23) is larger than the diameter of the connecting pipe (22), and the side wall of the spherical portion (23) is connected to a negative pressure pipe (24).

5. The sewage filtering device for environmental testing according to claim 4, characterized in that: A latch (19) is slidably inserted on the outer wall of the connecting member (5), and a socket (20) is provided on the side wall of the sliding plate (8). When the sliding plate (8) slides into the socket groove (27), the latch (19) can be inserted into the socket (20).

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