Farmland non-point source pollution recession water sampling device

Abstract

The utility model relates to the field of farmland non-point source pollution treatment, in particular to a farmland non-point source pollution recession sampling device which comprises a shell, a permeable shell and an end cover, a sample storage bin is arranged in the shell, the permeable shell is fixedly connected to the upper surface of the shell, and a filter screen is slidably connected to the inner wall of the permeable shell. Compared with the prior art, by arranging the pull block, the pull rod and the first spring, when the filter screen needs to be dismounted, the end cover is rotated, so that the end cover is popped up under the action of the elastic force of the first spring, the sliding block is separated from the L-shaped groove, then the end cover is pulled to move, the pull rod drives the pull block to move, and the pull block drives the filter screen to move; the filter screen can be pulled out of the water permeable shell, the pull rods are pressed to move oppositely, the pull blocks are separated from the pull grooves, then the filter screen can be detached, the filter screen does not need to be detached with the help of tools, detaching is more convenient, and due to the fact that the pull rods are not polluted, pollution to workers is avoided.

Description

Technical Field

[0001] The utility model relates to the field of farmland non-point source pollution control, in particular to a drainage sampling device for farmland non-point source pollution. Background Art

[0002] Non-point source pollution of farmland refers to the pollution caused by dissolved or solid pollutants in rural life and agricultural production activities, such as soil particles, nitrogen, phosphorus, pesticide heavy metals, rural poultry and livestock manure, domestic garbage and other organic or inorganic substances in farmland, which enter the receiving water bodies (rivers, lakes, reservoirs, bays) from non-specific areas through farmland surface runoff, farmland drainage and underground seepage under the action of precipitation and runoff.

[0003] Prior art publication number CN215767851U discloses a sampler for collecting agricultural non-point source runoff. It comprises a permeable area, a sample storage compartment, and a protective device. The permeable area has water collection holes on its sidewalls, a sealed sample storage compartment connected below the permeable area, and a removable protective device above the permeable area. This sampler has a simple structure and is lightweight, making it easy for experimenters to carry and install. Its low production cost allows it to be deployed in large quantities in areas requiring monitoring, providing diverse and accurate data for the management of agricultural non-point source pollution.

[0004] Through the above configuration, the water collection sampler described in the prior art is provided with a permeable area, a sample storage chamber, and an end cap, so that the contaminated water passes through the filter screen in the permeable area to filter out impurities, and then the contaminated water flows into the sample storage chamber. The sampler is then removed from the soil, and the contaminated water in the sample storage chamber is taken out for testing. However, the sampler of the prior art solution has the following defects during operation:

[0005] The sampler described in the prior art needs to be taken out after sampling is completed, and then the contaminated water is tested. However, since the filter screen filters the contaminated water, there will be many pollutants on the surface and inside of the filter screen, and the filter screen needs to be removed. Usually, the filter screen is removed with tools or by hand. In this process, the tools and the skin on the hands will be contaminated by pollutants, which can easily cause damage to the tools and skin, making it difficult to reuse the tools, and will cause harm to the workers' bodies, making it difficult for the workers to detect contaminated water. Utility Model Content

[0006] The utility model is intended to provide a device for sampling water from non-point source pollution in farmland, which is mainly used to solve the technical problem in the prior art that the filter can only be disassembled by tools or fingers, and the polluted water will contaminate the tools and staff.

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0008] The cam is secured to the cam face and has an angular channel that leads to the top of the cam, the channel being secured to the cam face for movement relative to the top of the cam, the channel being secured to the cam face for movement relative to the top of the cam, and the channel being secured to the cam face for movement.

[0009] The working principle and beneficial effects of this utility model:

[0010] When the filter screen is removed, first adjust the limit assembly to disengage the insertion rod from the socket, and then rotate the end cover in the opposite direction. Under the action of the first spring, the end cover is popped out, and the end cover drives the pull rod to move, and the pull rod drives the filter screen to move, and then the filter screen can be separated from the water permeable shell. At this time, press the pull rod to make the pull rod move inward and make the pull block disengage from the pull groove to complete the disassembly.

[0011] 2.Beneficial effects:

[0012] The existing technology sets a permeable area, a sample storage bin and an end cover, so that the contaminated water passes through the filter screen in the permeable area to filter out impurities, and then the contaminated water flows into the interior of the sample storage bin, and then the sampler is taken out from the soil, and the contaminated water in the sample storage bin is taken out for testing. However, after the sampling is completed, the existing sampler needs to be taken out and the contaminated water is tested. However, since the filter screen filters the contaminated water, there will be many pollutants on the surface and inside of the filter screen, and the filter screen needs to be disassembled. Usually, the filter screen is removed by tools or by hand. In this process, the tools and the skin on the hands will be contaminated by pollutants, which can easily cause damage to the tools and skin, and is not conducive to the reuse of the tools. The filter screen can be removed by the pull rod and replaced by the pull rod, and the filter screen can be replaced and cleaned without the help of tools. The filter screen can be removed and removed more conveniently. Since the pull rod is not contaminated, it will not cause pollution to the staff, which is beneficial to the technical problem of contaminated water detection.

[0013] Preferably, the limiting assembly includes a fixed block, which is fixedly connected to the outer wall of the water-permeable shell, a slide groove is provided on one side of the fixed block, a through groove is provided on the upper surface of the fixed block, the through groove is connected to the slide groove, a second spring is fixedly connected to the bottom of the inner wall of the slide groove, one end of the second spring is fixedly connected to a plug rod, the plug rod is slidably connected to the inner wall of the slide groove, a push block is fixedly connected to the outer wall of the plug rod, the push block is slidably connected to the inner wall of the through groove, one end of the push block extending out of the through groove is fixedly connected to a push plate, the push plate is slidably located on the upper surface of the fixed block, a socket is provided at one end of the end cover, the plug rod is plugged into the socket. By providing the limiting assembly, the end cover can be prevented from rotating due to uncontrollable factors, and the staff can be prevented from accidentally touching the end cover, causing the end cover to rotate, and the end cover can be prevented from being ejected and rotating.

[0014] Preferably, a one-way valve is threadedly connected to one end of the housing at the opening of the sample storage compartment, and one end of the one-way valve is threadedly connected to the other end of the water-permeable shell. The provision of the one-way valve allows contaminated water inside the sample storage compartment to enter but not exit, preventing contaminated water from flowing out when a worker is holding a sampling device containing contaminated water, thereby preventing contamination of the worker. The one-way valve can be detached from the housing by rotating the one-way valve and the housing, making it more convenient to use.

[0015] Preferably, the inner wall of the through groove is provided with a retaining groove, the inner wall of the retaining groove is slidably connected with a baffle, one end of the baffle is fixedly connected to the push block. By arranging the retaining groove and the baffle, insects or pollutants can be prevented from entering the interior of the through groove and damaging the second spring.

[0016] Preferably, a first sealing gasket is provided at the connection between the one-way valve and the housing, and a second sealing gasket is provided at the connection between the one-way valve and the water-permeable shell. By providing the first sealing ring and the second sealing ring, contaminated water can be prevented from flowing out of the gap between the one-way valve, the water-permeable shell and the housing.

[0017] Preferably, the outer wall of the push plate is provided with an anti-skid pad to prevent the fingers from slipping on the push plate.

[0018] Preferably, a rubber pad is fixed to the outer wall of the end cap to prevent fingers from slipping on the end cap. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is the front structural diagram of this utility model patent;

[0020] Figure 2 This is a cross-sectional structural diagram of this utility model patent;

[0021] Figure 3 For this utility model patent Figure 2 Structural diagram at point A in the middle;

[0022] Figure 4 This is a cross-sectional structural diagram of the permeable shell of this utility model patent;

[0023] Figure 5 For this utility model patent Figure 4 The structural diagram at B in the middle;

[0024] Figure 6 This is a side structural diagram of the end cover of this utility model patent;

[0025] Figure 7 This is the structural diagram of the one-way valve of this utility model patent;

[0026] Figure 8 This is a diagram of the internal structure of the end cover of this utility model patent.

[0027] The figure marks in the drawings of the specification include: 1. shell; 2. water-permeable shell; 3. end cover; 4. sample storage chamber; 5. filter screen; 6. fixing ring; 7. pull groove; 8. first spring; 9. sliding plate; 10. L-shaped groove; 11. slider; 12. pull rod; 13. pull block; 14. fixing block; 15. slide groove; 16. through groove; 17. second spring; 18. insertion rod; 19. push block; 20. push plate; 21. socket; 22. one-way valve; 23. retaining groove; 24. baffle; 25. first sealing gasket; 26. second sealing gasket. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] like Figure 1-8 As shown, a sampling device for farmland non-point source pollution drainage includes a shell 1, a water permeable shell 2 and an end cover 3. One end of the shell 1 is located at the opening of the sample storage chamber 4 and is threadedly connected to a one-way valve 22. One end of the one-way valve 22 is threadedly connected to the other end of the water permeable shell 2. A first sealing gasket 25 is provided at the connection between the one-way valve 22 and the shell 1, and a second sealing gasket 26 is provided at the connection between the one-way valve 22 and the water permeable shell 2. A sample storage chamber 4 is opened inside the shell 1, the water permeable shell 2 is fixed to the upper surface of the shell 1, and a filter screen 5 is slidably connected to the inner wall of the water permeable shell 2. The upper surface of the filter screen 5 is fixed with a fixing ring 6, and the inner wall of the fixing ring 6 is symmetrically provided with a groove 7. The bottom of the inner wall of the end cover 3 is fixed with a first spring 8, and one end of the first spring 8 is fixed with a sliding plate 9. The sliding plate 9 is slidably connected to the inner wall of the end cover 3. The inner wall of the end cover 3 is symmetrically provided with an L-shaped groove 10. The outer wall of one end of the water-permeable shell 2 is fixed with a slider 11 matching the L-shaped groove 10. The slider 11 is slidably connected to the L-shaped groove 10. The end of the water-permeable shell 2 located at the slider 11 is against the sliding plate 9. The side of the sliding plate 9 away from the first spring 8 is symmetrically fixed with a pull rod 1 2. The pull rod 12 is made of slightly bendable metal. The end of the pull rod 12 away from the sliding plate 9 is fixedly connected with a pull block 13 that matches the pull groove 7. The pull block 13 is stuck with the pull groove 7. The outer wall of the water-permeable shell 2 is fixedly connected with a limit assembly for limiting the rotation of the end cover 3. The limit assembly includes a fixed block 14. The fixed block 14 is fixed to the outer wall of the water-permeable shell 2. A slide groove 15 is provided on one side of the fixed block 14. A through groove 16 is provided on the upper surface of the fixed block 14. A stop groove 23 is provided on the inner wall of the through groove 16. A baffle 24 is slidably connected to the inner wall of the baffle One end of 24 is fixedly connected to the push block 19, the through groove 16 is connected to the slide 15, the bottom of the inner wall of the slide 15 is fixedly connected to the second spring 17, one end of the second spring 17 is fixedly connected to the insertion rod 18, the insertion rod 18 is located on the inner wall of the slide 15 and is slidably connected, the outer wall of the insertion rod 18 is fixedly connected to the push block 19, the push block 19 is located on the inner wall of the through groove 16 and is slidably connected, and one end of the push block 19 extending out of the through groove 16 is fixedly connected to a push plate 20, the push plate 20 is located on the upper surface of the fixed block 14 and slides, and a socket 21 is opened at one end of the end cover 3, and the insertion rod 18 is plugged into the socket 21.

[0030] From the above, it can be seen that the specific implementation of the present utility model is as follows:

[0031] When it is necessary to use this device, first pull the push plate 20 so that the push plate 20 drives the push block 19 to move, and then the push block 19 drives the insertion rod 18 to move, and the insertion rod 18 is collected into the inside of the slide groove 15, and then the pull groove 7 on the filter screen 5 is locked with the pull block 13, and then the end cover 3 is held to drive the pull rod 12 and the filter screen 5 to move, and then the filter screen 5 is placed inside the water permeable shell 2. At this time, in the process of placing the filter screen 5, the slider 11 on the outer wall of the water permeable shell 2 is aligned with the L-shaped groove 10, and then the slider 11 is inserted into the inside of the L-shaped groove 10. The water permeable shell 2 is located at one end of the slider 11 against the sliding plate 9, and then the sliding plate 9 is pushed to move. The sliding plate 9 begins to squeeze the first spring 8. When the slider 11 slides to the bottom of the L-shaped groove 10, the end is rotated ninety degrees. The cover 3 makes the slider 11 engage with the L-shaped groove 10, and then release the push plate 20, so that the insertion rod 18 is plugged into the socket 21 under the action of the elastic force of the second spring 17, and the installation is completed. When the filter screen 5 needs to be removed, pull the push plate 20, so that the push plate 20 drives the push block 19 to move, and then the push block 19 drives the insertion rod 18 to move, so that the insertion rod 18 disengages from the socket 21, and the insertion rod 18 is collected into the inside of the slide groove 15, and then the end cover 3 is rotated in the opposite direction. Under the action of the first spring 8, the end cover 3 is popped out, and the end cover 3 drives the pull rod 12 to move, and the pull rod 12 drives the filter screen 5 to move, and then the filter screen 5 can be separated from the water-permeable shell 2. At this time, press the pull rod 12 to make the pull rod 12 move inward and make the pull block 13 disengage from the pull groove 7 to complete the disassembly.

[0032] The above is only an embodiment of the present invention, and the commonly known specific structures and characteristics of the scheme are not described in detail here. It should be pointed out that for those skilled in the art, several modifications and improvements can be made without departing from the structure of the present invention, and these should also be regarded as the scope of protection of the present invention. These will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection claimed by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A device for sampling water from farmland non-point source pollution, comprising a housing (1), a water-permeable shell (2) and an end cover (3), characterized in that: A sample storage chamber (4) is provided inside the shell (1), a water-permeable shell (2) is fixedly connected to the upper surface of the shell (1), a filter screen (5) is slidably connected to the inner wall of the water-permeable shell (2), a fixing ring (6) is fixedly connected to the upper surface of the filter screen (5), a groove (7) is symmetrically provided on the inner wall of the fixing ring (6), a first spring (8) is fixedly connected to the bottom of the inner wall of the end cover (3), a sliding plate (9) is fixedly connected to one end of the first spring (8), the sliding plate (9) is slidably connected to the inner wall of the end cover (3), an L-shaped groove (10) is symmetrically provided on the inner wall of the end cover (3), and the water-permeable shell (2) is fixedly connected to the inner wall of the water-permeable shell (2). A slider (11) matching the L-shaped groove (10) is fixed to the outer wall of one end of the housing (2), and the slider (11) is slidably connected to the L-shaped groove (10). One end of the water-permeable shell (2) is located on the slider (11) and abuts against the sliding plate (9). A pull rod (12) is symmetrically fixed to the side of the sliding plate (9) away from the first spring (8). The end of the pull rod (12) away from the sliding plate (9) is fixed to a pull block (13) matching the pull groove (7). The pull block (13) is locked with the pull groove (7). A limit assembly for limiting the rotation of the end cover (3) is fixed to the outer wall of the water-permeable shell (2).

2. The device for sampling water from farmland non-point source pollution according to claim 1, characterized in that: The limiting assembly includes a fixed block (14), the fixed block (14) is fixedly connected to the outer wall of the water-permeable shell (2), a slide groove (15) is provided on one side of the fixed block (14), a through groove (16) is provided on the upper surface of the fixed block (14), the through groove (16) is connected to the slide groove (15), a second spring (17) is fixedly connected to the bottom of the inner wall of the slide groove (15), an insert rod (18) is fixedly connected to one end of the second spring (17), and the insert rod (18) is fixedly connected to the bottom of the inner wall of the slide groove (15). ) is located on the inner wall of the slide groove (15) and is slidably connected. The outer wall of the insertion rod (18) is fixedly connected with a push block (19). The push block (19) is located on the inner wall of the through groove (16) and is slidably connected. One end of the push block (19) extending out of the through groove (16) is fixedly connected with a push plate (20). The push plate (20) is located on the upper surface of the fixed block (14) and slides. A socket (21) is opened at one end of the end cover (3), and the insertion rod (18) is plugged into the socket (21).

3. The device for sampling water from farmland non-point source pollution according to claim 1, characterized in that: One end of the shell (1) is threadedly connected to a one-way valve (22) at the opening of the sample storage chamber (4), and one end of the one-way valve (22) is threadedly connected to the other end of the water-permeable shell (2).

4. The device for sampling water from farmland non-point source pollution according to claim 2, characterized in that: The inner wall of the through groove (16) is provided with a retaining groove (23), the inner wall of the retaining groove (23) is slidably connected with a retaining plate (24), and one end of the retaining plate (24) is fixedly connected to the push block (19).

5. The device for sampling water from farmland non-point source pollution according to claim 3, characterized in that: A first sealing gasket (25) is provided at the connection between the one-way valve (22) and the housing (1), and a second sealing gasket (26) is provided at the connection between the one-way valve (22) and the water-permeable shell (2).

6. The device for sampling water from farmland non-point source pollution according to claim 2, characterized in that: The outer wall of the push plate (20) is provided with an anti-slip pad.

7. The device for sampling water from farmland non-point source pollution according to claim 1, characterized in that: A rubber pad is fixedly connected to the outer wall of the end cover (3).

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