A sewage sampling device

Abstract

This invention relates to the field of wastewater sampling technology, and more particularly to a wastewater sampling device, comprising a conveying structure; an upper fixed plate is moved by the conveying structure; a first winding device is installed on the upper fixed plate for releasing or winding a first pull rope; a lower fixed plate is fixedly connected to the end of the first pull rope; a counterweight is connected to the lower side of the lower fixed plate via a first connecting rope; multiple sampling components are arranged between the upper and lower fixed plates; the upper fixed plate is fixed by the conveying structure, and the lower fixed plate is fixed by the counterweight sinking to the bottom, so that the multiple sampling components are not displaced by water flow or air bubbles during sampling. This invention fixes the upper fixed plate by the conveying structure and the lower fixed plate by the counterweight sinking to the bottom, so that the sampling components installed between the upper and lower fixed plates also do not move, thus preventing displacement due to water flow or air bubbles during sampling.

Description

Technical Field

[0001] This invention relates to the field of wastewater sampling technology, and in particular to a wastewater sampling device. Background Technology

[0002] Patent application CN211576657U (A Wastewater Sampler) discloses a method for transporting a sampling structure via a conveying structure to collect wastewater samples, thus overcoming the limitation of ineffective sampling of wastewater far from the shore. However, problems exist: during wastewater sampling, the sampling container may shift in the water due to water flow (flowing water) or air bubbles (aeration tank), causing the sampling position to deviate from the preset position, resulting in inaccurate samples. Furthermore, patent application CN219265763U (A Wastewater Sampler) does not involve a sealed sampling container that enters the wastewater at a specific depth, leaving residual wastewater from various depths within the container, further contributing to inaccurate samples. Summary of the Invention

[0003] To overcome the inaccuracy of existing sewage samplers, this invention provides a sewage sampling device, including a conveying structure; an upper fixed plate is moved by the conveying structure; a first winding device is installed on the upper fixed plate for releasing or winding a first pull rope; a lower fixed plate is fixedly connected to the end of the first pull rope; a counterweight is connected to the lower side of the lower fixed plate via a first connecting rope; multiple sampling components are arranged between the upper and lower fixed plates; the upper fixed plate is fixed by the conveying structure, and the lower fixed plate is fixed by the counterweight sinking to the bottom, so that the multiple sampling components are not affected by water flow or air bubbles during sampling.

[0004] As a preferred embodiment of the present invention, the sampling assembly includes a second winding device, a third winding device, and a sampler; the second winding device is mounted on the upper fixed plate; the third winding device is mounted on the lower fixed plate; the sampler is fixedly connected to the second pull rope of the second winding device and the third pull rope of the third winding device.

[0005] As a preferred embodiment of the present invention, the sampler includes an upper connecting cover, a lower connecting cover, and a sampling container; the end of the second pull rope is fixedly connected to the upper connecting cover; the end of the third pull rope is fixedly connected to the lower connecting cover; the sampling container is fixedly connected to the lower connecting cover, and the sealing cover of the sampling container is fixedly connected to the upper connecting cover; by only allowing the second winding device to wind the end of the second pull rope to move the upper connecting cover upward, the sealing cover of the sampling container is opened to perform sewage sampling.

[0006] As a preferred embodiment of the present invention, the sealing cap of the sampling container and the upper connecting cap are detachably connected; the body of the sampling container and the lower connecting cap are detachably connected.

[0007] As a preferred embodiment of the present invention, the sealing cap of the sampling container is connected to the sampling container body by a second connecting rope.

[0008] As a preferred embodiment of the present invention, a one-way valve is provided on the sampling container body. Wastewater enters the sampling container body through the one-way valve, and the one-way valve is exposed when the sealing cover is opened.

[0009] As a preferred embodiment of the present invention, a first self-sealing quick connector is installed at the bottom of the sampling container body, the first self-sealing quick connector passing through the lower connecting cover; a connecting tube is fixedly connected to the lower fixing plate; a second self-sealing quick connector is fixedly connected to one end of the connecting tube, and a sampling tube is connected to the other end of the connecting tube; the first self-sealing quick connector and the second self-sealing quick connector are mated together; when the first self-sealing quick connector and the second self-sealing quick connector are mated together, they are interconnected; when the first self-sealing quick connector and the second self-sealing quick connector are not mated together, they are each sealed.

[0010] As a preferred embodiment of the present invention, the sampling tube and the connecting tube are detachably connected.

[0011] As a preferred embodiment of the present invention, the first connecting rope is detachably connected to the lower fixing plate, and the first connecting rope is detachably connected to the counterweight.

[0012] As a preferred technical solution of the present invention, the sampling container is initially set to a negative pressure state.

[0013] Compared with the prior art, the present invention has the following advantages: the present invention fixes the upper fixed plate without moving by the conveying structure and fixes the lower fixed plate without moving by the counterweight sinking to the bottom, so that the sampling component installed between the upper fixed plate and the lower fixed plate also does not move, thus preventing displacement caused by water flow or air bubbles during sampling.

[0014] The sampling container of the present invention can perform sampling operations on sewage at various depths. There will be no residual problems caused by sewage at other depths during sampling, and the sewage in the sampling container will not mix with the external sewage after sampling, thus ensuring the accuracy of sampling. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the present invention;

[0016] Figure 2 for Figure 1 A schematic diagram of a partial structure;

[0017] Figure 3 for Figure 2 A diagram showing the upward-looking perspective;

[0018] Figure 4 This is a schematic diagram of the sampling container of the present invention when the sealing cap is not opened;

[0019] Figure 5 This is a schematic diagram of the structure of the sampling container of the present invention when the sealing cap is opened;

[0020] Figure 6 This is a schematic diagram of the structure when the first self-sealing quick connector and the second self-sealing quick connector of the present invention are connected.

[0021] Reference numerals: 1-Conveying structure, 2-Upper fixed plate, 3-First winding device, 4-Lower fixed plate, 5-First connecting rope, 6-Counterweight, 7-Sampling assembly, 3a-First pull rope, 71-Second winding device, 72-Third winding device, 73-Sampling device, 71a-Second pull rope, 72a-Third pull rope, 731-Upper connecting cover, 732-Lower connecting cover, 733-Sampling container, 733a-Sealing cover, 734-Second connecting rope, 735-One-way valve, 736-Connecting pipe, 737-First self-sealing quick connector, 738-Second self-sealing quick connector, 739-Sampling tube. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0023] Patent application CN211576657U (A Wastewater Sampler) discloses a method for transporting a sampling structure via a conveying structure to collect wastewater samples, thus overcoming the limitation of ineffective sampling of wastewater far from the shore. However, it has several drawbacks. During wastewater sampling, the sampling container may shift in the water due to water flow (flowing water) or air bubbles (aeration tank), causing the sampling position to deviate from the preset location and resulting in inaccurate sampling. Furthermore, patent application CN219265763U (A Wastewater Sampler) does not involve a sealed sampling container that enters the wastewater at a specific depth, leaving residual wastewater from various depths within the container, further contributing to inaccurate sampling. This invention addresses these issues.

[0024] Example 1: As Figures 1-6As shown, the present invention provides a wastewater sampling device, including a conveying structure 1, an upper fixed plate 2, a first winding device 3, a lower fixed plate 4, a first connecting rope 5, a counterweight 6, and sampling components 7. The conveying structure 1 drives the upper fixed plate 2 to move above the wastewater to be sampled. The first winding device 3 is installed on the upper fixed plate 2 and is used to release or wind up the first pull rope 3a. The lower fixed plate 4 is fixed to the end of the first pull rope 3a. The counterweight 6 is connected to the lower side of the lower fixed plate 4 through the first connecting rope 5. Multiple sampling components 7 are arranged between the upper fixed plate 2 and the lower fixed plate 4. The upper fixed plate 2 is fixed in place by the conveying structure 1, and the lower fixed plate 4 is fixed in place by the counterweight 6 sinking to the bottom, so that the multiple sampling components 7 are not affected by water flow or air bubbles when sampling.

[0025] The conveying structure 1 can be a slider rail assembly or a multi-stage push rod assembly; it only needs to be able to move the upper fixed plate 2 above the sewage.

[0026] The sampling assembly 7 includes a second winder 71, a third winder 72, and a sampler 73. The second winder 71 is mounted on the upper fixed plate 2, and the third winder 72 is mounted on the lower fixed plate 4. The sampler 73 is fixedly connected to the second pull rope 71a of the second winder 71 and the third pull rope 72a of the third winder 72. When the sampler 73 needs to move downward, the second pull rope 71a is released through the second winder 71, and the third pull rope 72a is wound up through the third winder 72. Similarly, the upward movement of the sampler 73 is not described in detail.

[0027] Thus, by connecting a second pull rope 71a to the upper side of the sampler 73 and a third pull rope 72a to the lower side of the sampler 73, the present invention allows the second pull rope 71a and the third pull rope 72a to be taut when the sampler 73 is taking a sample, thereby fixing the sampler 73 and preventing it from shifting due to water flow or air bubbles.

[0028] like Figures 4-5 As shown, the sampler 73 includes an upper connecting cover 731, a lower connecting cover 732, and a sampling container 733; the end of the second pull rope 71a is fixedly connected to the upper connecting cover 731; the end of the third pull rope 72a is fixedly connected to the lower connecting cover 732; the sampling container 733 is fixedly connected to the lower connecting cover 732, and the sealing cover 733a of the sampling container 733 is fixedly connected to the upper connecting cover 731; by only allowing the second winding device 71 to wind the end of the second pull rope 71a to move the upper connecting cover 731 upward, the sealing cover 733a of the sampling container 733 is opened to perform sewage sampling. At this time, the third winding device 72 does not wind or release the third pull rope 72a, that is, the body of the sampling container 733 does not move.

[0029] The sealing cap 733a of the sampling container 733 is detachably connected to the upper connecting cap 731; the body of the sampling container 733 is detachably connected to the lower connecting cap 732. After sampling is completed, the sampling container 733 can be removed.

[0030] like Figure 5 As shown, the sealing cap 733a of the sampling container 733 is connected to the body of the sampling container 733 via a second connecting rope 734.

[0031] The sampling container 733 is equipped with a one-way valve 735. Wastewater enters the sampling container 733 through the one-way valve 735. When the sealing cover 733a is opened, the one-way valve 735 is exposed.

[0032] When using this invention, such as Figure 1 As shown, the upper fixed plate 2 is moved above the sewage to be sampled by the conveying structure 1; then the first winding device 3 is controlled to release the first pull rope 3a, so that the lower fixed plate 4 and the counterweight 6 move downward in the water. When the counterweight 6 sinks to the bottom, the release is stopped and the first pull rope 3a is wound up appropriately to make the first pull rope 3a taut. In this way, the upper fixed plate 2 is fixed by the conveying structure 1 and the lower fixed plate 4 is fixed by the counterweight 6 sinking to the bottom, so that the sampling component 7 installed between the upper fixed plate 2 and the lower fixed plate 4 does not move, so that it is not affected by water flow or air bubbles during sampling and thus does not shift.

[0033] When sampling component 7 takes a sample, the second pull rope 71a is released by the second rewinder 71, and the third rewinder 72 rewinds the third pull rope 72a, causing the sampler 73 to move downwards in the water to a preset water depth; then, as Figures 4-5 As shown, by only having the second winding device 71 wind up the second pull rope 71a to move the upper connecting cover 731 upward, the sealing cover 733a of the sampling container 733 is opened. At this time, the third winding device 72 neither winds up nor releases the third pull rope 72a, that is, the body of the sampling container 733 does not move. After the sealing cover 733a is separated from the body of the sampling container 733, it is connected by the second connecting rope 734. At this time, the one-way valve 735 is exposed, and the sewage enters the sampling container 733 through the one-way valve 735 to complete the sewage sampling. Furthermore, when the sampler 73 is sampling, the second pull rope 71a and the third pull rope 72a are taut to fix the sampler 73 and prevent it from shifting due to water flow or air bubbles.

[0034] It should be noted that the sealing cap 733a is sealed to the sampling container 733 body by an insertion method, and a certain pulling force is required to open it. When the third pull rope 72a moves the sampling container 733 downward to overcome the water resistance or the second pull rope 71a moves the sampling container 733 upward to overcome the water resistance, the sealing cap 733a will not be opened.

[0035] Furthermore, when the sampling container 733 moves downwards or upwards in the water, since the sealing cap 733a remains closed, this invention allows the sampling container 733 to remain sealed until it reaches the sampling depth in the sewage. That is, sewage passing through the container will not enter the sampling container 733. The sealing cap 733a is only opened during sampling, allowing the sampling container 733 to sample only the sewage at a predetermined depth. This overcomes the sewage residue problem in the prior art and ensures sampling accuracy. Moreover, the presence of the one-way valve 735 prevents the sewage in the sampling container 733 from mixing with external sewage after sampling is completed.

[0036] Furthermore, a first self-sealing quick connector 737 is installed at the bottom of the sampling container 733, and the first self-sealing quick connector 737 passes through the lower connecting cover 732; a connecting tube 736 is fixedly connected to the lower fixing plate 4; a second self-sealing quick connector 738 is fixedly connected to one end of the connecting tube 736, and a sampling tube 739 is connected to the other end of the connecting tube 736; the first self-sealing quick connector 737 and the second self-sealing quick connector 738 are mated together; when the first self-sealing quick connector 737 and the second self-sealing quick connector 738 are mated together, they are interconnected; when the first self-sealing quick connector 737 and the second self-sealing quick connector 738 are not mated together, they are each sealed.

[0037] The sampling tube 739 and the connecting tube 736 are detachably connected, so the sampling tube 739 of the corresponding length can be installed according to the water depth to be sampled.

[0038] The first connecting rope 5 is detachably connected to the lower fixing plate 4, and the first connecting rope 5 is detachably connected to the counterweight 6. In this way, by replacing the first connecting rope 5 with different lengths, full-depth sampling of sewage can be achieved.

[0039] Each third winding device 72 is provided with at least two third pull ropes 72a connected to the lower connecting cover 732.

[0040] Furthermore, considering the need to sample the wastewater at the bottom, when sampling the wastewater at the bottom, such as... Figure 2 , Figure 4 , Figure 6As shown, according to the required sampling depth, a sampling tube 739 of the corresponding length is selected and installed on the connecting tube 736. The first connecting rope 5 of the corresponding length is replaced to adjust the distance between the lower fixing plate 4 and the counterweight 6. During sampling, the sampling container 733 does not open its sealing cap 733a. The third winding device 72 winds up the third pull rope 72a, and the second winding device 71 releases the second pull rope 71a, causing the sampler 73 to move downwards. This causes the first self-sealing quick connector 737 to move downwards and mate with the second self-sealing quick connector 738. Together, the two are interconnected. Wastewater enters the sampling container 733 through the lower opening of the sampling tube 739 (the depth of the lower opening of the sampling tube 739 is the depth at which the wastewater needs to be sampled), via the connecting tube 736, the first self-sealing quick connector 737, and the second self-sealing quick connector 738. In this way, the sampling container 733 performs sampling of the wastewater at the bottom. After sampling, the sampling container 733 moves upward, causing the first self-sealing quick connector 737 and the second self-sealing quick connector 738 to separate and seal themselves. Thus, the sampling container 733 of this invention can perform sampling operations on wastewater at various depths, without leaving any residue from wastewater at other depths during sampling. After sampling, the wastewater in the sampling container 733 will not mix with external wastewater, ensuring the accuracy of the sampling.

[0041] Furthermore, the sampling container 733 is initially set to a negative pressure state to facilitate the entry of sewage.

[0042] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A wastewater sampling device, comprising a conveying structure (1); wherein the upper fixed plate (2) is moved by the conveying structure (1); characterized in that, A first winding device (3) is installed on the upper fixed plate (2). The first winding device (3) is used to release or wind up the first pull rope (3a). The end of the first pull rope (3a) is fixed to the lower fixed plate (4). A counterweight (6) is connected to the lower side of the lower fixed plate (4) through the first connecting rope (5). Multiple sampling components (7) are arranged between the upper fixed plate (2) and the lower fixed plate (4). The upper fixed plate (2) is fixed by the conveying structure (1), and the lower fixed plate (4) is fixed by the counterweight (6) sinking to the bottom, so that the multiple sampling components (7) are not affected by water flow or air bubbles when sampling.

2. The wastewater sampling device according to claim 1, characterized in that, The sampling assembly (7) includes a second winder (71), a third winder (72) and a sampler (73); the second winder (71) is installed on the upper fixed plate (2); the third winder (72) is installed on the lower fixed plate (4); the sampler (73) is fixedly connected to the second pull rope (71a) of the second winder (71) and the third pull rope (72a) of the third winder (72).

3. The wastewater sampling device according to claim 2, characterized in that, The sampler (73) includes an upper connecting cover (731), a lower connecting cover (732), and a sampling container (733); the end of the second pull rope (71a) is fixedly connected to the upper connecting cover (731); the end of the third pull rope (72a) is fixedly connected to the lower connecting cover (732); the sampling container (733) is fixedly connected to the lower connecting cover (732), and the sealing cover (733a) of the sampling container (733) is fixedly connected to the upper connecting cover (731); by only allowing the second winding device (71) to wind the end of the second pull rope (71a) to move the upper connecting cover (731) upward, the sealing cover (733a) of the sampling container (733) is opened to perform sewage sampling.

4. A wastewater sampling device according to claim 3, characterized in that, sampling... The sealing cap (733a) of the container (733) is detachably connected to the upper connecting cap (731); the body of the sampling container (733) is detachably connected to the lower connecting cap (732).

5. A wastewater sampling device according to claim 4, characterized in that, sampling... The sealing cap (733a) of the container (733) is connected to the body of the sampling container (733) via a second connecting rope (734).

6. A wastewater sampling device according to claim 5, characterized in that, sampling... The container (733) body is equipped with a one-way valve (735). Wastewater enters the sampling container (733) body through the one-way valve (735). When the sealing cap (733a) is opened, the one-way valve (735) is exposed.

7. A wastewater sampling device according to claim 6, characterized in that, A first self-sealing quick connector (737) is installed at the bottom of the sampling container (733), and the first self-sealing quick connector (737) passes through the lower connecting cover (732); a connecting tube (736) is fixedly connected to the lower fixing plate (4); a second self-sealing quick connector (738) is fixedly connected to one end of the connecting tube (736), and a sampling tube (739) is connected to the other end of the connecting tube (736); the first self-sealing quick connector (737) and the second self-sealing quick connector (738) are mated together; when the first self-sealing quick connector (737) and the second self-sealing quick connector (738) are mated together, they are connected to each other; when the first self-sealing quick connector (737) and the second self-sealing quick connector (738) are not mated together, they are sealed.

8. A wastewater sampling device according to claim 7, characterized in that, The sampling tube (739) and the connecting tube (736) are detachably connected.

9. A wastewater sampling device according to claim 7, characterized in that, The first connecting rope (5) is detachably connected to the lower fixing plate (4), and the first connecting rope (5) is detachably connected to the counterweight (6).

10. A wastewater sampling device according to claim 3, characterized in that, The sampling container (733) is initially set to a negative pressure state.

Images