A total inlet water sewage sampling device

Abstract

The utility model discloses a total water inlet sewage sampling device belongs to sewage treatment technical field. A total water inlet sewage sampling device is used for water quality sampling at the water inlet sampling point of the sewage plant, and the sewage sampling device comprises: a sampling pipe, which is used for collecting sewage samples at the total water inlet, and the bottom end of the sampling pipe is provided with a sampling port; a vacuum pump is connected with the top end of the sampling pipe through a suction pipe, and the vacuum pump is used for forming negative pressure in the sampling pipe and lifting the collected sewage sample into the sampling pipe; a self-priming pump is connected with the sampling pipe through a water inlet pipe, and the self-priming pump is used for pumping the sewage sample in the sampling pipe. The utility model discloses a vacuum pump and a self-priming pump are arranged to collect sewage samples, the defect that single self-priming pump cannot collect water samples due to excessively high lift is optimized, the vacuum pump forms negative pressure in the sampling pipe, and the sewage sample is extracted into the sampling pipe, the self-priming pump discharges the sewage into the specified equipment by pumping the sewage sample in the sampling pipe, so that the sewage sample can be fed back in real time.

Description

Technical Field

[0001] This utility model belongs to the field of wastewater treatment technology, and specifically relates to a wastewater sampling device for a main inlet. Background Technology

[0002] Wastewater quality testing is a core component of environmental monitoring and wastewater treatment. Its purpose is to assess the types and concentrations of pollutants in water bodies and their potential hazards to the environment and human health. Existing wastewater quality testing technologies are mainly based on physical, chemical, and biological methods, combined with modern instruments to achieve detection.

[0003] Wastewater treatment plants are crucial sites for the centralized collection and treatment of wastewater. The influent sampling points are key locations for monitoring influent water quality. Regularly collecting and analyzing influent samples allows for timely understanding of the concentration and chemical composition of pollutants. The analysis results provide insights into the dynamics of the pipe network, the water quality within the wastewater treatment plant's catchment area, and provide a basis for adjusting the plant's production processes.

[0004] However, the influent channels of wastewater treatment plants connect to the municipal sewage network and are located deep underground in a confined space. This space experiences significant hydraulic impact, has a complex environment, and contains a large amount of debris, including particulate matter and hair fibers, which can easily clog pipes, filters, and pumps. Therefore, some plants have moved their influent sampling points to behind the fine screen; however, this sampling point cannot effectively reflect the real-time water quality of the pipe network. Utility Model Content

[0005] The purpose of this invention is to provide a sewage sampling device for the main inlet, which addresses the above-mentioned problems. It is expected to improve the existing sewage sampling devices, which cannot accurately collect water samples due to the excessive head of the single self-priming pump, and the sampling tube is easily blocked by debris, causing debris in the water to enter the subsequent detection instruments and equipment and cause blockage.

[0006] The technical solution adopted by this utility model is as follows: A wastewater sampling device for a main inlet, used for water quality sampling at the inlet sampling point of a wastewater treatment plant, the wastewater sampling device comprising the following:

[0007] The sampling tube is used to collect sewage samples at the main inlet, and a sampling port is provided at the bottom of the sampling tube;

[0008] A vacuum pump, connected to the top of the sampling tube via an air suction tube, is used to create negative pressure in the sampling tube and lift the collected sewage sample into the sampling tube.

[0009] The self-priming pump is connected to the sampling tube via the inlet pipe. The self-priming pump is used to extract sewage samples from the sampling tube.

[0010] The top of the sampling tube is above the sewage surface, while the bottom of the sampling tube is below the sewage surface. Both the vacuum pump and the self-priming pump are located above the sewage surface.

[0011] Vacuum pumps and self-priming pumps need to be installed in locations where they will not be affected by external factors; the specific installation and setup should be determined based on actual usage requirements.

[0012] By adopting the above-mentioned setup, the vacuum pump is used to create negative pressure in the sampling tube and lift the collected sewage sample into the sampling tube through the connection between the suction pipe and the top of the sampling tube; this can effectively solve the problem that the self-priming pump cannot collect water samples due to excessive head at the sewage sampling point.

[0013] Furthermore, to prevent the sampling tube from becoming clogged, the water-facing side and bottom of the sampling tube are completely sealed. The sampling port is located on the back side of the sampling tube and includes multiple small holes for connecting the inside and outside of the sampling tube.

[0014] Furthermore, in order to clean the residue attached to the sampling port in real time, the sampling port is connected to an electric cleaning device, which includes a lead screw, a brush, and a drive device. The brush is connected to the drive device through the lead screw, and the drive device is used to drive the lead screw to move the brush and clean the sampling port.

[0015] It should be noted that when the brush is not in use, it is positioned above the sewage surface and is always in contact with the wall of the sampling tube; when the brush is in use, it moves up and down along the tube wall to clean the sampling port.

[0016] Furthermore, in order to extract wastewater from the sampling tube for sample testing in real time, an electric inlet valve is installed on the inlet side of the inlet pipe to control the wastewater in the sampling tube to enter the inlet pipe, and an electric outlet valve is installed on the outlet side of the inlet pipe to control the wastewater in the inlet pipe to be discharged; a self-priming pump is installed between the electric inlet valve and the electric outlet valve.

[0017] Furthermore, in order to prevent clogging of the inlet pipe, a filter is installed to filter the sewage flowing out of the sampling tube. The filter is installed on the inlet pipe and is used to filter the sewage sample in the sampling tube.

[0018] Furthermore, in order to discharge the wastewater in the sampling tube in real time for the next sampling, an emptying pipe is also provided on the outlet side of the inlet pipe. The emptying pipe is used to empty the wastewater in the sampling tube. The emptying pipe is connected to the inlet pipe through an electric emptying valve, which controls the emptying of the emptying pipe.

[0019] Furthermore, in order to filter out larger debris, the orifice radius is 2 mm.

[0020] Furthermore, in order to detect the liquid level and vacuum status in the sampling tube in real time, the sampling tube is equipped with a liquid level controller and a vacuum detector. The liquid level controller is used to detect the liquid level in the sampling tube, and the vacuum detector is used to detect the vacuum status in the sampling tube. The liquid level controller and the vacuum detector are connected to the vacuum pump via electrical signals.

[0021] Furthermore, in order to automatically control the start and stop of the vacuum pump, the liquid level controller is set to two states: high liquid level and low liquid level. When the liquid level controller is at a low liquid level, the vacuum pump starts; when the liquid level controller is at a high liquid level, the vacuum pump stops.

[0022] Furthermore, to facilitate real-time operation of the wastewater sampling device, the wastewater sampling device also includes a control panel, which is used to control the various components in the wastewater sampling device.

[0023] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0024] 1. This utility model optimizes the shortcomings of a single self-priming pump that cannot collect water samples due to excessive head by setting up a vacuum pump and a self-priming pump to collect sewage samples. The vacuum pump extracts sewage samples into the sampling tube by creating negative pressure, and the self-priming pump discharges sewage into the designated equipment by extracting sewage samples from the sampling tube, thereby enabling real-time feedback on sewage samples.

[0025] 2. This utility model sets the sampling port of the sampling tube on the back side of the water, and sets the bottom and front side of the sampling tube in a closed state, reducing the amount of debris in the sewage entering the sampling tube, thereby avoiding clogging of the sampling tube; at the same time, the sampling port has a 2 mm hole, which can filter most of the debris in the sewage, thus making the sewage sampling more accurate.

[0026] 3. This utility model, by setting up an electric cleaning device, uses a drive motor to drive a lead screw to drive a brush to clean the sampling port, which can clean the sampling port in real time, reduce the attachments near the sampling port, and ensure that the sewage sampling device can operate smoothly without being blocked. Attached Figure Description

[0027] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the device structure of this utility model;

[0029] Figure 2 This is a schematic diagram of the backwater surface structure of the sampling tube of this utility model.

[0030] Reference numerals: 1. Sampling tube; 101. Sampling port; 102. Small hole; 2. Vacuum pump; 3. Self-priming pump; 4. Suction pipe; 5. Water inlet pipe; 501. Electric water inlet valve; 502. Electric water outlet valve; 503. Filter; 6. Drain pipe; 601. Electric drain valve; 7. Electric cleaning device; 701. Lead screw; 702. Brush; 703. Drive device; 8. Exhaust pipe; 801. Electric vent valve; 9. Vacuum detector; 10. Liquid level controller. Detailed Implementation

[0031] The present invention will now be described in detail with reference to the accompanying drawings.

[0032] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0033] Because the wastewater treatment plant's inlet channel connects to the municipal sewage network and is located deep underground, it is a confined space. This confined space experiences significant hydraulic impact, has a complex environment, and contains a large amount of debris, including particulate matter and hair fibers, which can easily clog pipes, filters, and pumps. Therefore, this invention proposes a wastewater sampling device for the main inlet, such as... Figures 1-2 As shown, the wastewater sampling device includes a sampling tube 1, a vacuum pump 2, a self-priming pump 3, an air intake pipe 4, a water inlet pipe 5, an exhaust pipe 6, an electric cleaning device 7, an exhaust pipe 8, a vacuum detector 9, and a liquid level controller 10. The vacuum pump 2 creates negative pressure in the sampling tube 1, lifting the wastewater into the sampling tube 1. The self-priming pump 3 is connected to the sampling tube 1 through the water inlet pipe 5 and is used to extract wastewater samples from the sampling tube 1. The wastewater samples in the sampling tube 1 are discharged under the control of an electric water outlet valve 502. The exhaust pipe 8 is connected to the water inlet pipe 5 and is controlled by an electric venting valve 801 to connect the inside and outside of the sampling tube 1 to release pressure, facilitating safe maintenance by repair personnel during equipment repair.

[0034] Example 1

[0035] like Figure 1 As shown, one embodiment of this utility model is a wastewater sampling device for a main inlet, used for water quality sampling at the inlet sampling point of a wastewater treatment plant. The wastewater sampling device includes the following:

[0036] Sampling tube 1 is used to collect sewage samples at the main inlet. Sampling tube 1 has a sampling port 101 at the bottom end.

[0037] Vacuum pump 2 is connected to the top of sampling tube 1 through suction pipe 4. Vacuum pump 2 is used to create negative pressure in sampling tube 1 and lift the collected sewage sample into sampling tube 1. Vacuum pump 2 creates a vacuum in sampling tube 1 by extracting gas from sampling tube 1, so that sewage can enter sampling tube 1 through sampling port 101.

[0038] The self-priming pump 3 is connected to the sampling tube 1 through the water inlet pipe 5. The self-priming pump 3 is used to extract sewage samples from the sampling tube 1.

[0039] The top of sampling tube 1 is higher than the sewage surface, the bottom of sampling tube 1 is below the sewage surface, sampling port 101 is also set below the sewage surface, and vacuum pump 2 and self-priming pump 3 are both set above the sewage surface.

[0040] The working principle of the sewage sampling device is as follows: the vacuum pump 2 forms a negative pressure through the sampling tube 1, which lifts the sewage through the sampling port into the sampling tube 1 for temporary storage. The self-priming pump 3 extracts the sewage sample temporarily stored in the sampling tube 1 through the water inlet pipe 5 for testing. The remaining sewage in the sampling tube 1 after sampling is extracted by the self-priming pump 3. After the sewage in the sampling tube 1 is emptied, the sewage can be extracted into the sampling tube 1 again for testing.

[0041] Thus, by combining vacuum pump 2 and self-priming pump 3, the process of extracting sewage samples and emptying sewage can be completed, ensuring that the collected sewage samples can truly reflect the sewage quality. Furthermore, by using vacuum pump 2 to lift the sewage into sampling tube 1, the problem of self-priming pump 3 having difficulty extracting water samples due to its high head can be avoided.

[0042] Example 2

[0043] like Figure 1 and Figure 2 As shown, in another embodiment of the present invention, the bottom water-facing side and the bottom of the sampling tube 1 are both in a fully enclosed state, and the sampling port 101 is set on the back water side of the sampling tube 1. The sampling port 101 includes a plurality of small holes 102, which are used to connect the inside and outside of the sampling tube 1.

[0044] The front and back sides of sampling tube 1 are determined by the direction of sewage flow. The place where the sewage flows to first is the front side of sampling tube 1, and the place where the sewage flows to last is the back side of sampling tube 1. The inside of sampling tube 1 refers to the temporary storage location of sewage lifted by vacuum pump 2, and the outside of sampling tube 1 is the location through which the sewage flows.

[0045] The bottom of the sampling tube 1 is fully enclosed on both the water-facing side and the bottom surface, so that the debris in the sewage will not flow into the sampling tube 1. The sampling port 101 is set on the back side of the sampling tube 1, and the sampling port 101 is set as multiple small holes 102. Sewage enters the sampling tube 1 through the small holes 102, thereby preventing the sampling tube 1 from being blocked by debris.

[0046] Example 3

[0047] like Figure 1 and Figure 2 As shown, in another embodiment of the present invention, the sampling port 101 is connected to the electric cleaning device 7. The electric cleaning device 7 includes a lead screw 701, a brush 702 and a driving device 703. The brush is connected to the driving device through the lead screw. The driving device is used to drive the lead screw to move the brush and clean the sampling port.

[0048] The lead screw 701 converts the rotational motion of the drive device 703 into linear motion, thereby driving the brush 702 to clean the sampling port 101 and remove the attached debris. The drive device 703 can control the operation and stop of the brush 702. When the detection device on the sampling tube 1 detects that the water inflow rate at the sampling port 101 has slowed down or stopped, it sends a signal to the drive device 703, which then drives the brush 702 to clean the sampling port 101.

[0049] The electric cleaning device 7 reduces the cost of manual cleaning and can also clean the sampling port 101 according to the real-time situation, ensuring that the sewage sampling device can operate continuously.

[0050] Example 4

[0051] like Figure 1 As shown, in another embodiment of the present invention, an electric inlet valve 501 is provided on the inlet side of the inlet pipe 5. The electric inlet valve 501 is used to control the sewage in the sampling pipe 1 to enter the inlet pipe 5. An electric outlet valve 502 is provided on the outlet side of the inlet pipe 5. The electric outlet valve 502 is used to control the sewage in the inlet pipe 5 to be discharged. A self-priming pump 3 is arranged between the electric inlet valve 501 and the electric outlet valve 502.

[0052] One end of the inlet pipe 5 is connected to the sampling pipe 1, and the other end is connected to the wastewater sample storage container after sampling, so as to sample and store the wastewater in the sampling pipe 1.

[0053] The working process is as follows: Open the electric inlet valve 501, and send the sewage in the sampling tube 1 into the inlet pipe 5 through the self-priming pump 3; open the electric outlet valve 502, and send the sewage sample into the storage container for testing.

[0054] A filter 503 is also installed on the inlet pipe 5. The filter 503 is used to filter the sewage sample in the sampling tube 1 to prevent debris from clogging the inlet pipe 5. The filter 503 is a two-stage filter. By filtering the sewage sample twice, substances in the sewage sample that affect the quality of the tested water are removed. The specific filter is selected according to the usage requirements. The filter 503 is detachable for easy cleaning.

[0055] Example 5

[0056] like Figure 1 As shown, in another embodiment of the present invention, an emptying pipe 6 is provided on the outlet side of the inlet pipe 5. The emptying pipe 6 is used to empty the sewage in the sampling pipe 1. The emptying pipe 6 is connected to the inlet pipe 5 through an electric emptying valve 601, and the emptying of the emptying pipe 6 is controlled by the electric emptying valve 601.

[0057] The drain pipe 6 is a branch of the inlet pipe 5. The flow direction of sewage in the inlet pipe 5 is controlled by the electric drain valve 601. When it is necessary to extract sewage samples from the sampling tube 1, the electric drain valve 601 is closed and the electric outlet valve 502 is opened. The sewage samples flow into the sewage sample storage container through the electric outlet valve 502. When it is necessary to drain the sewage in the sampling tube 1, the electric drain valve 601 is opened and the sewage in the sampling tube 1 is discharged from the sampling tube 1 through the drain pipe 6.

[0058] By setting up the drain pipe 6, it is ensured that each water sample collected is a real-time water sample, reflecting the real-time water quality function. The usage method is as follows: 3 minutes before each sampling, the sewage water sample remaining in the inlet pipe 5 and sampling pipe 1 from the previous sampling is discharged through the drain pipe 6, and then the real-time water sample is transported to the sewage sample storage device for testing through the electric outlet valve 502.

[0059] Example 6

[0060] like Figure 1 As shown, in another embodiment of the present invention, the sampling tube 1 is provided with a liquid level controller 10 and a vacuum detector 9. The liquid level controller 10 is used to detect the liquid level in the sampling tube 1, and the vacuum detector 9 is used to detect the vacuum state in the sampling tube 1. The liquid level controller 10 and the vacuum detector 9 are connected to the vacuum pump 2 via electrical signals.

[0061] During the sampling process, when the liquid level controller 10 detects that the liquid level in the sampling tube 1 is low, it starts the vacuum pump 2; when the liquid level controller 10 detects that the liquid level in the sampling tube 1 is high, it stops the vacuum pump 2. The vacuum degree detector 9 is used to detect the vacuum degree of the sampling tube 1, whether the pipeline is leaking or the vacuum pump is malfunctioning.

[0062] Example 7

[0063] like Figure 1 As shown, in another embodiment of the present invention, the liquid level controller 10 is set to two critical states, namely high liquid level and low liquid level. When the liquid level controller 10 is at the low liquid level, the vacuum pump 2 is started to lift sewage into the sampling tube 1; when the liquid level controller 10 is at the high liquid level, the vacuum pump 2 stops working and stops extracting air from the sampling tube 1.

[0064] By detecting the liquid level in the sampling tube 1 and controlling the vacuum pump 2 through the liquid level controller 10, the sewage sampling device described in this embodiment can automatically perform sampling, thereby reducing labor costs.

[0065] Example 8

[0066] like Figure 1 As shown, another embodiment of the present invention includes a control panel for controlling various components of the wastewater sampling device.

[0067] Each device in the wastewater sampling device can be operated through the control panel, and the start and stop conditions of each device can also be set, enabling the wastewater sampling device to operate automatically.

[0068] Example 9

[0069] like Figure 1 As shown, another embodiment of this utility model includes a wastewater sampling device further comprising an exhaust pipe 8, which is used to connect the inside and outside of the inlet pipe 5 for pressure relief. An electric venting valve 801 is installed on the exhaust pipe 8. This is to facilitate safe maintenance by repair personnel during equipment maintenance.

[0070] When the sewage sampling device needs to be repaired, open the electric vent valve 801 in advance to connect the inside and outside of the inlet pipe 5. This facilitates the balancing of the internal and external pressures of the sewage sampling device and makes it easier to disassemble the sewage sampling device, thereby ensuring the safety of maintenance personnel and equipment.

[0071] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A total influent intake sewage sampling device for water quality detection at an influent sampling point of a sewage plant, characterized in that, The wastewater sampling device includes the following: The sampling tube is used to collect sewage samples at the main inlet, and a sampling port is provided at the bottom of the sampling tube; A vacuum pump, connected to the top of the sampling tube via an air suction tube, is used to create negative pressure in the sampling tube and lift the collected sewage sample into the sampling tube. The self-priming pump is connected to the sampling tube via the inlet pipe. The self-priming pump is used to extract sewage samples from the sampling tube. The top of the sampling tube is above the sewage surface, while the bottom of the sampling tube is below the sewage surface. Both the vacuum pump and the self-priming pump are located above the sewage surface.

2. A total intake sewage sampling device according to claim 1, wherein, The bottom of the sampling tube is fully enclosed on both the water-facing side and the bottom surface. The sampling port is located on the back side of the sampling tube and includes multiple small holes for connecting the inside and outside of the sampling tube.

3. A total intake sewage sampling device according to claim 2, wherein, The sampling port is connected to an electric cleaning device, which includes a lead screw, a brush, and a drive device. The brush is connected to the drive device via the lead screw, and the drive device is used to drive the lead screw to move the brush and clean the sampling port.

4. The total intake sewage sampling device of claim 1, wherein, An electric inlet valve is installed on the inlet side of the inlet pipe to control the sewage in the sampling tube to enter the inlet pipe. An electric outlet valve is installed on the outlet side of the inlet pipe to control the sewage in the inlet pipe to be discharged. A self-priming pump is installed between the electric inlet valve and the electric outlet valve.

5. A device for sampling sewage water from a combined sewer inlet according to claim 4, wherein A filter is installed on the inlet pipe, which is used to filter the sewage sample in the sampling tube.

6. A total intake sewage sampling device according to claim 4, wherein, The inlet pipe is also equipped with an outlet pipe, which is used to drain the sewage in the sampling pipe. The outlet pipe is connected to the inlet pipe through an electric outlet valve, which controls the draining of the outlet pipe.

7. A total intake sewage sampling device according to claim 2, wherein The radius of the small hole is 2 mm.

8. A wastewater sampling device for a main inlet according to claim 1, characterized in that, The sampling tube is equipped with a liquid level controller and a vacuum detector. The liquid level controller is used to detect the liquid level in the sampling tube, and the vacuum detector is used to detect the vacuum status in the sampling tube. The liquid level controller and the vacuum detector are connected to the vacuum pump via electrical signals.

9. A wastewater sampling device for a main inlet according to claim 8, characterized in that, The liquid level controller is set to two states: high liquid level and low liquid level. When the liquid level controller is at a low liquid level, the vacuum pump starts; when the liquid level controller is at a high liquid level, the vacuum pump stops.

10. A wastewater sampling device for a main inlet according to claim 1, characterized in that, The wastewater sampling device also includes a control panel, which is used to control the various components in the wastewater sampling device.

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