A sampling device for a vortex grit chamber

Abstract

The utility model relates to sewage treatment sampling detection technical field discloses a cyclone grit chamber sampling device, including the water delivery pipe, the water intake of water delivery pipe top end is located below the liquid surface in grit chamber, the water delivery pipe bottom is provided with the discharge port with sewer pipeline conduction, wherein the water delivery pipe is provided with the sampling pipe of timing opening sampling on conduction, water delivery pipe one side rotation is provided with the sampling box, the sampling box is provided with a plurality of sampling cavities along its circumference, wherein the sampling box can rotate regularly, to make sampling pipe in turn with different sampling cavity conduction, the water delivery pipe below sampling pipe is provided with the valve of timing opening and closing, the utility model discloses, can regularly carry out sampling operation to grit chamber, need not manual direct intervention, reduce the labor intensity, promote the safety performance, convenient operation uses, and the practicality is strong.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment sampling and testing technology, and in particular to a vortex grit chamber sampling device. Background Technology

[0002] The vortex grit chamber in a wastewater treatment plant is a core unit in the pretreatment stage. Through a physical separation mechanism, it achieves multiple objectives, including efficient grit removal, equipment protection, and energy optimization. To assess grit removal efficiency, optimize operating parameters (such as adjusting wastewater flow rate and vortex intensity based on sampling results to improve centrifugal separation efficiency and ensure effective settling of denser inorganic particles), monitor organic residues, and verify water purification effects, it is necessary to periodically sample and analyze the water flow within the vortex grit chamber. Since vortex grit chambers are typically located at a high elevation, sampling requires workers to frequently climb to higher positions, which is not only labor-intensive and time-consuming but also poses certain safety hazards, especially during inclement weather. Therefore, there is an urgent need for a vortex grit chamber sampling device that can automatically and periodically sample, improving sampling convenience. Utility Model Content

[0003] The purpose of this invention is to provide a vortex grit chamber sampling device that can perform timed sampling of the grit chamber without direct manual intervention, thereby reducing labor intensity, improving safety performance, and being easy to operate and highly practical.

[0004] The present invention adopts the following technical solution: A sampling device for a vortex grit chamber includes a water supply pipe, with an intake at the top of the pipe located below the liquid surface in the grit chamber, and a discharge port at the bottom of the pipe connected to a sewer pipe. A sampling tube, designed for timed opening and closing, is connected to the water supply pipe. A sampling box is rotatably mounted on one side of the water supply pipe, and multiple sampling chambers are arranged along its circumference within the sampling box. The sampling box can rotate at regular intervals to allow the sampling tube to sequentially connect to different sampling chambers. A valve, designed for timed opening and closing, is installed on the water supply pipe below the sampling tube.

[0005] Preferably, a support base is provided below the sampling tube, and the support base is connected to the water supply pipe; a motor-driven rotating shaft is provided on the support base, and the rotating shaft is detachably connected to the sampling box.

[0006] Preferably, the top of the sampling box is rotatably provided with a sealing cover, and the sealing cover is provided with an input hole. The sampling tube extends into the input hole, and its bottom end is not lower than the bottom end of the input hole.

[0007] Preferably, the sampling tube is detachably provided with a sealing sheet to seal the input hole, and the bottom end of the sampling tube passes through the sealing sheet.

[0008] Preferably, the top sidewall of the sampling box is provided with two raised edges spaced apart along the circumference, and a ball bearing is movably disposed on the inner sidewall of the sealing cover. During operation, the ball bearing moves within the space formed by the two raised edges.

[0009] Preferably, a clearance groove is provided on the upper convex edge.

[0010] Preferably, the rotating shaft is elastically adjustable along its axial direction, and a connecting hole for the rotating shaft to pass through is provided at the center of the bottom of the sampling box.

[0011] Preferably, a limiting block is provided on the side wall of the rotating shaft, and a limiting groove matching the limiting block is provided on the side wall of the connecting hole.

[0012] Preferably, the water pipe is made of a transparent material.

[0013] Preferably, the sampling box is made of a transparent material.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: By setting a sampling tube that opens at a time on the water supply pipe, this utility model can realize timed sampling operations, eliminating the need for manual sampling by climbing to high places, improving efficiency, reducing labor intensity, and ensuring safety; the setting of multiple sampling chambers inside the sampling box and the rotation setting of the sampling box can classify and store water samples collected at different times, ensuring that they do not interfere with each other and guaranteeing the accuracy of subsequent testing; placing the water intake at the top of the water supply pipe below the liquid surface of the sedimentation tank can directly introduce the water flow in the sedimentation tank into the water supply pipe using the siphon principle, eliminating the need for water pump installation and saving costs; the discharge port at the bottom of the water supply pipe leads to the sewer pipe, which facilitates the discharge of the residual water flow from the previous batch in the water supply pipe each time sampling, ensuring the sampling effect. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of an embodiment of this application; Figure 2 This is a schematic diagram of the support base according to an embodiment of this application; Figure 3 This is a front view of the sampling box in an embodiment of this application; Figure 4 This is a top view of the sampling box in an embodiment of this application; Figure 5 This is a bottom view of the sealing cap according to an embodiment of this application; Figure 6 for Figure 1 A magnified view of A in the middle. Detailed Implementation

[0016] The present invention will now be described clearly and completely with reference to the accompanying drawings and embodiments: like Figures 1 to 6 As shown, the vortex grit chamber sampling device of this utility model includes a water supply pipe 1. A water inlet 2 on one side of the top of the water supply pipe 1 is located below the liquid surface in the grit chamber. The grit chamber is located at a high position, and the main pipeline of the water supply pipe 1 is arranged vertically along one side of the grit chamber. A discharge port 3 connected to a sewer pipe is provided at the bottom of the water supply pipe 1 to drain any residual water from the previous sampling before each sampling. During initial installation, the water supply pipe 1 needs to be filled with water, and then the water inlet 2 is placed below the liquid surface in the grit chamber to allow water from the grit chamber to be drawn into the water supply pipe 1 using the siphon principle. A sampling pipe 4 is connected to the water supply pipe 1 for timed sampling, which is typically achieved by setting a solenoid valve and connecting a timer. The solenoid valve activates at timed intervals. The principle and connection method of the closed system are well-known in the art and will not be described in detail here. A sampling box 5 is rotatably installed on one side of the water supply pipe 1, and multiple sampling chambers 6 are arranged along its circumference inside the sampling box 5. The sampling box 5 is driven by a motor 7 and can rotate at a certain angle at regular intervals so that the sampling tube 4 is connected to different sampling chambers 6 in sequence, completing the classification and storage of samples taken at different times and improving the accuracy of subsequent testing. A timed valve 8 is installed on the water supply pipe 1 below the sampling tube 4, which is convenient to control the opening before each sampling to drain the residual water in the water supply pipe 1, allowing the water sample to enter the water supply pipe 1. When the water sample fills the valve 8, the valve 8 closes, and the sampling tube 4 opens to perform the sampling operation. In this embodiment, both the water supply pipe 1 and the sampling box 5 are preferably made of transparent material so as to intuitively observe the internal water flow.

[0017] In this embodiment, a support base 9 is provided below the sampling tube 4. The support base 9 is connected to the water supply pipe 1 via a fixing ring on one side. A rotating shaft 10 driven by a motor 7 is provided on the support base 9, and the rotating shaft 10 is detachably connected to the sampling box 5. During operation, controlling the motor 7 to drive the rotating shaft 10 to rotate at a certain angle completes the switching between two adjacent sampling chambers 6, thereby realizing the collection of water samples at different times. In addition, a sealing cover 11 is rotatably provided on the top of the sampling box 5 to seal the sampling chamber 6 and prevent external dust and debris from falling into it. The sealing cover 11 is provided with an input hole 12, into which the sampling tube 4 extends. The bottom end of the sampling tube 4 is not lower than the bottom end of the input hole 12, so that as the sampling box 5 rotates, under the limitation of the sampling tube 4, the input hole 12 on the sealing cover 11 corresponds to the next sampling chamber 6, thereby realizing the delivery of water samples at different times to different sampling chambers 6. To avoid the sampling tube 4 being set too low within the sampling chamber 6, which would obstruct the rotation of the sampling box 5.

[0018] Preferably, the sampling tube 4 is detachably provided with a sealing sheet 13 to seal the input port 12, and the bottom end of the sampling tube 4 passes through the sealing sheet 13; the sealing sheet 13 can seal the input port 12 to further improve the sealing effect of the sampling box 5; wherein, for example Figure 6 The top of the sealing sheet 13 is provided with a split fixing sleeve. The two split fixing sleeves are connected and fixed to the outside of the sampling tube 4 by bolts. The input hole 12 is opened in the form of a countersunk hole. The outer diameter of the sealing sheet 13 matches the larger diameter at its upper part to provide bottom support for the sealing sheet 13, so that the sealing sheet 13 and the input hole 12 can be tightly connected after the sampling box 5 is installed.

[0019] like Figure 3 As shown, the top sidewall of the sampling box 5 has two raised edges 14 spaced circumferentially, and the upper raised edge 14 has a relief groove 15. A ball bearing 16 is movably disposed on the inner sidewall of the sealing cover 11. During operation, the ball bearing 16 moves within the space formed by the two raised edges 14. The ball bearing 16 reduces friction between the sealing cover 11 and the sampling box 5, improving the ease of movement of the sampling box 5. When the sealing cover 11 needs to be removed, simply rotate the sealing cover 11 to position the ball bearing 16 in the relief groove 15 and pull the sealing cover 11 up; the operation is simple and quick.

[0020] Furthermore, the rotating shaft 10 can be elastically adjusted along its axial direction. Specifically, the rotating shaft 10 can be configured into upper and lower parts. The lower part is rotatably embedded in the support base 9 and connected to the motor 7. The upper part is elastically set in the groove opened in the lower part by a spring. When the sampling box 5 is installed, the spring is in a compressed state. The bottom center of the sampling box 5 is provided with a connecting hole 18 for the rotating shaft 10 to pass through. The elastic setting of the rotating shaft 10 facilitates the installation and removal of the sampling box 5. When the sampling box 5 needs to be removed, simply press down on the sampling box 5. At this time, the spring is compressed, and the sampling tube 4 and the sealing plate 13 will come out from the input hole 12, so that the sampling box 5 can be removed. Preferably, a limiting block 17 is also provided on the side wall of the rotating shaft 10, and a limiting groove 19 matching the limiting block 17 is provided on the side wall of the connecting hole 18. The cooperation between the limiting block 17 and the limiting groove 19 can prevent the rotating shaft 10 from spinning freely relative to the limiting groove 19 due to slippage during rotation, thereby enhancing the practicality of this utility model.

[0021] In use, the sampling tube 4 is opened periodically for sampling. Each time a sample is taken, the water in the water supply pipe 1 is the water from the previous sampling. The lower valve 8 can be opened to drain the water. Due to the siphon principle, the water in the sedimentation tank will re-enter the water supply pipe 1. Then, the valve 8 is closed and the sampling tube 4 is opened. Multiple samplings can be completed by opening the sampling tube 4 periodically, without the need for manual climbing, which saves time and effort and is highly safe. When the water sample needs to be taken out for testing, the staff only needs to remove the sampling box 5 on time and classify and store the sample taken in the sampling box 5. The operation is simple, quick and easy, and highly practical.

[0022] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A sampling device for a vortex grit chamber, characterized in that: The system includes a water supply pipe, with an intake at the top of the pipe located below the liquid level in the sedimentation tank, and a discharge port at the bottom of the pipe connected to a sewer pipe. A sampling tube, designed for timed opening and closing, is connected to the water supply pipe. A sampling box is rotatably mounted on one side of the water supply pipe, and multiple sampling chambers are arranged along its circumference within the sampling box. The sampling box can rotate at regular intervals to allow the sampling tube to sequentially connect to different sampling chambers. A valve, designed for timed opening and closing, is installed on the water supply pipe below the sampling tube.

2. The cyclone sedimentation tank sampling device according to claim 1, characterized in that: A support base is provided below the sampling tube, and the support base is connected to the water supply pipe; a motor-driven rotating shaft is provided on the support base, and the rotating shaft is detachably connected to the sampling box.

3. The cyclone sedimentation tank sampling device according to claim 2, characterized in that: The sampling box is rotatably equipped with a sealing cover on its top, and the sealing cover is provided with an input hole. The sampling tube extends into the input hole, and its bottom end is not lower than the bottom end of the input hole.

4. The cyclone sedimentation tank sampling device according to claim 3, characterized in that: The sampling tube is detachably provided with a sealing sheet to seal the input hole, and the bottom end of the sampling tube passes through the sealing sheet.

5. The cyclone sedimentation tank sampling device according to claim 3, characterized in that: The sampling box has two raised edges spaced circumferentially on the top side wall, and a ball bearing is movably disposed on the inner side wall of the sealing cover. During operation, the ball bearing moves within the space formed by the two raised edges.

6. The cyclone sedimentation tank sampling device according to claim 5, characterized in that: A clearance groove is provided on the upper convex edge.

7. The cyclone sedimentation tank sampling device according to claim 4, characterized in that: The rotating shaft can be elastically adjusted along its axial direction, and the sampling box has a connecting hole extending upward from the bottom center for the rotating shaft to pass through.

8. The cyclone sedimentation tank sampling device according to claim 7, characterized in that: A limiting block is provided on the side wall of the rotating shaft, and a limiting groove matching the limiting block is provided on the side wall of the connecting hole.

9. The cyclone sedimentation tank sampling device according to claim 1, characterized in that: The water pipe is made of a transparent material.

10. The cyclone sedimentation tank sampling device according to claim 1, characterized in that: The sampling box is made of transparent material.

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