Sampling device for sewage treatment

Abstract

The utility model provides a sampling device for sewage treatment, which belongs to the technical field of sewage sampling and comprises a water pumping pipe and a water pump on the water pumping pipe, a filter cartridge is arranged at the end of the water pumping pipe, the water pumping pipe is used for pumping sewage into the filter cartridge through the water pump, a filter screen is arranged in the filter cartridge, and the filter screen is used for filtering impurities in the sewage in the filter cartridge; according to the sewage sampling device, the pumped sewage can be filtered before the sewage is pumped into a pipeline, solid impurities are prevented from entering the sampling barrel along with a sewage sample, the pipeline is prevented from being blocked by the solid impurities, and thus the influence on the sample detection accuracy is greatly reduced.

Description

Technical Field

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

[0002] In the current wastewater treatment process, in order to accurately detect the water quality, it is necessary to sample and analyze the untreated wastewater. Most existing wastewater sampling devices use water pumps to directly extract wastewater to collect wastewater samples.

[0003] However, wastewater typically contains a large amount of impurities, such as silt, suspended solids, fibrous materials, and even discarded plastic bags. Because existing equipment lacks an effective impurity filtration mechanism during water intake, the extracted wastewater samples contain excessive amounts of solid impurities. This not only clogs the pumping pipes but also damages subsequent testing instruments, wears down precision components, and can even severely interfere with the accuracy of test results. Consequently, the analytical data cannot accurately reflect the actual composition and pollution level of the wastewater, significantly impacting the scientific validity and effectiveness of wastewater treatment. Utility Model Content

[0004] In view of this, the present invention provides a sampling device for sewage treatment, which can filter the sewage before it is drawn into the pipeline to prevent solid impurities from entering the sampling bucket along with the sewage sample and to prevent solid impurities from clogging the pipeline, thereby greatly reducing the impact on the accuracy of sample detection.

[0005] To solve the above-mentioned technical problems, this utility model provides a sampling device for sewage treatment, including a pumping pipe and a water pump on the pumping pipe. A filter cylinder is provided at the end of the pumping pipe. The pumping pipe is used to pump sewage into the filter cylinder. A filter screen is provided inside the filter cylinder. The filter screen is used to filter impurities in the sewage inside the filter cylinder. When the water pump is started to pump water, the sewage will be filtered by the filter screen during the pumping process. Thus, the sewage can be filtered before being pumped into the pipeline, so that the filter screen can filter solid impurities in the sewage.

[0006] There are multiple filter screens, which are evenly distributed inside the filter cartridge. The pore size of the multiple filter screens decreases from bottom to top, so that the sewage passes through the three filter screens in sequence. The sewage first passes through the bottom filter screen with the largest pore size for filtration, so that the larger particles in the sewage are filtered out first. Then, the smaller particles inside are filtered by the remaining two filter screens in sequence, thereby improving the filtration effect.

[0007] A fixing ring is installed around the bottom opening of the filter cartridge. An isolation plate is fixed inside the fixing ring. Multiple elongated grooves are evenly opened on the surface of the isolation plate. When sewage is pumped out, the sewage first passes through the grooves of the isolation plate and then enters the filter cartridge. This allows the isolation plate to block some large impurities, prevent them from damaging the filter screen, and improve the service life of the device.

[0008] A nozzle is inclinedly installed on one side wall of the filter cartridge, with the air outlet of the nozzle tilted downwards and located below the bottom filter screen. The air inlet of the nozzle is connected to an air supply pipe, and an air pump is installed on the air supply pipe. The nozzle is used to spray high-pressure gas onto the surface of the baffle plate through the air pump. A valve is installed on the air supply pipe. When large impurities block the bottom of the baffle plate, the operator can use an external air pump to input high-pressure gas into the air supply pipe, so that the high-pressure gas is sprayed onto the surface of the baffle plate through the nozzle. The sprayed high-pressure gas blows out the impurities blocking the bottom of the baffle plate, preventing blockage. In addition, the valve is designed so that when gas spraying is not needed, the passage in the air supply pipe is closed to prevent sewage from flowing back into the nozzle and the air supply pipe.

[0009] A connecting pipe is fixed at the center of the upper end of the filter cartridge, and the water pumping pipe and the connecting pipe are detachably connected. This detachable connection allows the staff to separate the water pumping pipe and the connecting pipe after the pumping operation is completed, making it easier to clean and unclog the inside of the water pumping pipe, preventing excessive dirt buildup on the inner wall of the water pumping pipe, and improving the service life of the equipment.

[0010] The end of the pumping pipe is provided with a first connector, and the end of the connecting pipe is provided with an internal threaded hole. The end of the first connector is provided with an external threaded surface that matches the internal threaded hole of the connecting pipe. When it is necessary to connect the connecting pipe and the pumping pipe, the first connector at the end of the pumping pipe is inserted into the internal threaded hole at the upper end of the connecting pipe. Then, the first connector or the pumping pipe is rotated so that the external threaded surface of the first connector is threaded into the threaded hole of the connecting pipe, thereby connecting the pumping pipe and the connecting pipe together. When it is necessary to separate them, the first connector is rotated in the opposite direction to remove the first connector from the upper end of the connecting pipe.

[0011] The air supply pipe and the nozzle are detachably connected, which allows workers to separate the air supply pipe from the nozzle for easy disassembly and maintenance.

[0012] The nozzle has a second connector at its end, which has an external threaded surface. The air supply pipe has a mounting block at its end, which has an internal threaded hole that fits the external threaded surface of the second connector. The operator fits the threaded hole of the mounting block onto the external threaded surface of the second connector, and then rotates the mounting block to make the mounting block and the second connector threaded together, thus splicing the second connector and the mounting block together. When disassembly is required, rotating the mounting block can separate it from the second connector, making disassembly and assembly convenient.

[0013] The top of the filter cartridge is detachably connected to a top cover via a flange, and the connecting pipe is located on the top cover connected to the flange. This allows the operator to remove the top cover from the top of the filter cartridge, making it easy to wash the filter screen inside the cartridge, preventing filter screen blockage, and facilitating maintenance.

[0014] A sealing gasket is provided on the surface where the top cover contacts the filter cartridge. The sealing gasket is used to improve the sealing between the top cover and the filter cartridge. The sealing gasket is made of rubber. The sealing gasket improves the sealing between the top cover and the filter cartridge, so that sewage will not flow out from between the top cover and the filter cartridge.

[0015] In summary, compared with the prior art, this application includes at least one of the following beneficial technical effects:

[0016] 1. When using this utility model, the sewage can be filtered before it is drawn into the pipeline to prevent solid impurities from entering the sampling bucket along with the sewage sample, thus preventing solid impurities from clogging the pipeline and greatly reducing the impact on the accuracy of sample detection.

[0017] 2. When this utility model is used, the stepped filtration method can not only avoid clogging caused by the rapid accumulation of impurities in a single-layer filter, but also refine the filtration step by step, significantly improving the impurity interception efficiency, ensuring the purity of the sewage sample entering the sampling bucket, thereby improving the accuracy of subsequent test data.

[0018] 3. When this utility model is in use, the nozzle is linked with the air pump and air supply pipe to spray high-pressure gas below the baffle plate, which powerfully blows away the impurities stuck in the channel, thus achieving rapid unblocking.

[0019] 4. In use, the water pumping pipe and the filter cartridge are connected by a threaded joint, the air supply pipe and the nozzle are installed with detachable threads, and the top cover of the filter cartridge is fixed by a flange and equipped with a sealing gasket. This modular design makes maintenance operations such as filter cleaning, pipe dredging, and seal replacement more convenient, avoids dirt residue affecting the quality of subsequent sampling, and ensures sealing during disassembly and assembly to prevent sewage leakage. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the filter cartridge structure of this utility model;

[0021] Figure 2 This is a side view of the filter cartridge structure of this utility model;

[0022] Figure 3 For the present utility model Figure 2 Front sectional view at point BB;

[0023] Figure 4 This is a schematic diagram of the bottom structure of the filter cartridge of this utility model;

[0024] Figure 5 This is a schematic diagram of the disassembled water pump pipe and gas transmission pipe ports of this utility model.

[0025] Figure 6 For the present utility model Figure 5 Enlarged schematic diagram of the structure at point A in the middle.

[0026] Figure 7 This is a diagram of the wastewater sampling route of this utility model.

[0027] Explanation of reference numerals in the attached figures:

[0028] 100. Filter cartridge; 101. Top cover; 200. Water suction pipe; 201. First connector; 202. Connecting pipe; 203. Water pump; 300. Air supply pipe; 301. Nozzle; 302. Mounting block; 303. Second connector; 304. Air pump; 400. Filter screen; 500. Isolation plate; 501. Fixing ring; 600. Sampling container. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the following will be described in conjunction with the accompanying drawings of the embodiments of this utility model. Figure 1-7 The technical solutions of the embodiments of this utility model are clearly and completely described herein. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model are within the protection scope of this utility model.

[0030] A sampling device for wastewater treatment, such as Figure 1 , Figure 3 , Figure 4 and Figure 7As shown: The system includes a water pump 200, the end of which is connected to a sampling container 600, allowing water pumped by the pipe to be collected in the container. A water pump 203 is mounted on the pipe 200 and can be placed near the sampling container 600. A filter cartridge 100 is attached to the end of the pipe 200, with a slot at the bottom. The filter cartridge 100 is connected to the pipe 200. Workers place the filter cartridge 100 into the wastewater tank and then start the water pump 203 to pump water. The process involves the wastewater first entering the filter cartridge 100, which contains a filter screen 400. During the extraction process, the wastewater passes through the filter screen 400, thus filtering the extracted wastewater before it is pumped into the pipeline. The filter screen 400 filters out solid impurities in the wastewater, and the filtered wastewater enters the pumping pipe 200 and is then discharged into the sampling bucket 600 through the tail end of the pumping pipe 200. This prevents solid impurities from entering the sampling bucket 600 along with the wastewater sample and thus prevents solid impurities from clogging the pipeline.

[0031] Specifically, there are three filter screens 400, which are distributed vertically inside the filter cartridge 100. The spacing between each filter screen 400 is the same, and the pore size of the multiple filter screens 400 decreases from bottom to top. This allows the wastewater to pass through the three filter screens 400 in sequence. The wastewater first passes through the bottom filter screen 400 with the largest pore size for filtration, so that the larger particles in the wastewater are filtered first. Then, the smaller particles inside are filtered by the remaining two filter screens 400 in sequence, thereby improving the filtration effect.

[0032] Furthermore, a fixing ring 501 is provided around the bottom opening of the filter cartridge 100. An isolation plate 500 is fixed to the inner ring of the fixing ring 501. The surface of the isolation plate 500 is evenly provided with multiple elongated grooves. Since the sewage contains some large impurities, in order to prevent some large impurities from damaging the filter screen 400, when the sewage is pumped out, the sewage first passes through the grooves of the isolation plate 500 before entering the filter cartridge 100. Thus, the isolation plate 500 can block some large impurities, prevent them from damaging the filter screen 400, and improve the service life of the device.

[0033] according to Figure 1-3As shown, a nozzle 301 is obliquely mounted on one side wall of the filter cartridge 100. A threaded hole is obliquely opened on the side wall of the filter cartridge 100. A mounting sleeve is provided on the outer surface of the nozzle 301 mounting location. The surface of the mounting sleeve has an external thread surface that matches the threaded hole. The operator connects the mounting sleeve to the threaded hole via the external thread surface, allowing the nozzle 301 to be detachably mounted on the side wall of the filter cartridge 100. The air outlet of the nozzle 301 is obliquely downwards, and the nozzle 301 is located below the lowest filter screen 400. An air supply pipe 300 is connected to the air inlet of the nozzle 301. An air pump 304 is installed on the air supply pipe 300. The nozzle 301 is used to supply air to the baffle plate 50 via the air pump 304. High-pressure gas is sprayed onto the surface of the nozzle 300. A valve is installed on the gas supply pipe 300, located near the connection between the gas supply pipe 300 and the nozzle 301. When large impurities block the bottom of the baffle plate 500, the operator can use an external air pump 304 to input high-pressure gas into the gas supply pipe 300, so that the high-pressure gas is sprayed onto the surface of the baffle plate 500 through the nozzle 301. The high-pressure gas is sprayed to blow out the impurities blocking the bottom of the baffle plate 500, preventing blockage. In addition, the valve is designed so that when gas spraying is not needed, the valve closes the channel inside the gas supply pipe 300 to prevent sewage from flowing back into the nozzle and the gas supply pipe 300.

[0034] As shown in the figures, a connecting pipe 202 is fixed at the center of the upper end of the filter cartridge 100, and the water pumping pipe 200 and the connecting pipe 202 are detachably connected. Through the detachable connection between the water pumping pipe 200 and the connecting pipe 202, after the water pumping work is completed, the staff can separate the water pumping pipe 200 and the connecting pipe 202 to facilitate cleaning and unblocking the inside of the water pumping pipe 200, prevent excessive dirt from accumulating on the inner wall of the water pumping pipe 200, and improve the service life of the equipment.

[0035] Specifically, the end of the pumping pipe 200 is provided with a first connector 201, and the end of the connecting pipe 202 is provided with an internal threaded hole. The end of the first connector 201 is provided with an external threaded surface that matches the internal threaded hole of the connecting pipe 202. When it is necessary to connect the connecting pipe 202 and the pumping pipe 200, the first connector 201 at the end of the pumping pipe 200 is inserted into the internal threaded hole at the upper end of the connecting pipe 202. Then, the first connector 201 or the pumping pipe 200 is rotated so that the external threaded surface of the first connector 201 is threaded into the threaded hole of the connecting pipe 202, thereby connecting the pumping pipe 200 and the connecting pipe 202 together. When it is necessary to separate them, the first connector 201 is rotated in the opposite direction to remove the first connector 201 from the upper end of the connecting pipe 202.

[0036] Specifically, the air supply pipe 300 and the nozzle 301 are detachably connected. This detachable connection allows workers to separate the air supply pipe 300 from the nozzle 301, facilitating disassembly and maintenance of both components.

[0037] Specifically, the nozzle 301 has a second connector 303 at its end, and the second connector 303 has an external threaded surface at its end. The air supply pipe 300 has a mounting block 302 at its end, and the mounting block 302 has an internal threaded hole that fits the external threaded surface of the second connector 303. The operator fits the threaded hole of the mounting block 302 onto the external threaded surface of the second connector 303, and then rotates the mounting block 302 so that the mounting block 302 and the second connector 303 are threaded together, thereby splicing the second connector 303 and the mounting block 302 together. When disassembly is required, the mounting block 302 can be rotated to separate it from the second connector 303, which is convenient for disassembly and assembly.

[0038] Specifically, the top of the filter cartridge 100 is detachably connected to a top cover 101 via a flange, and a connecting pipe 202 is installed on the top cover 101 connected to the top cover 101 via a flange, so that the operator can remove the top cover 101 from the top of the filter cartridge 100 to facilitate the rinsing of the filter screen 400 inside the filter cartridge 100, prevent the filter screen 400 from clogging, and facilitate maintenance.

[0039] Furthermore, a sealing gasket is provided on the surface of the top cover 101 that contacts the filter cartridge 100. The sealing gasket is used to improve the sealing performance between the top cover 101 and the filter cartridge 100. The sealing gasket is made of rubber. The sealing performance between the top cover 101 and the filter cartridge 100 is improved by the sealing gasket, so that sewage will not flow out from between the top cover 101 and the filter cartridge 100.

[0040] How to use this utility model:

[0041] First, it needs to be clarified that this utility model relates to sewage sampling, mainly used for filtering sewage during sampling. It should be noted that both water pump 203 and air pump 304 are existing technologies; their models are not limited here, nor are their structures described in detail. Only the usage and installation position of the filter cartridge 100 are described in detail. When sewage sampling is required, the air pump 304 and water pump 203 are installed in appropriate positions. Then, the filter cartridge 100 is placed in the sewage tank to be sampled. The water pump 203 is then started, and it removes water from the sewage. The wastewater is drawn into the filter cartridge 100, where large impurities are blocked by the baffle plate 500. Simultaneously, the wastewater is filtered through the three-layer filter screen 400 inside the filter cartridge 100, ensuring that all impurities in the wastewater are separated by the filter screen 400. The filtered wastewater enters the pumping pipe 200 and is then pumped into the sampling bucket 600 by the water pump 203. The design of the filter screen 400 and the baffle plate 500 prevents solid impurities from entering the sampling bucket 600 along with the wastewater sample and prevents solid impurities from clogging the pumping pipe 200, thereby greatly reducing the impact on the accuracy of sample testing.

[0042] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. A sampling device for wastewater treatment, comprising a pumping pipe (200) and a water pump (203) on the pumping pipe (200), characterized in that: The end of the pumping pipe (200) is provided with a filter cylinder (100). The pumping pipe (200) is used to pump sewage into the filter cylinder (100) by a water pump (203). The filter cylinder (100) is provided with a filter screen (400) and the filter screen (400) is used to filter impurities in the sewage inside the filter cylinder (100).

2. The sampling device for wastewater treatment as described in claim 1, characterized in that: The number of filter screens (400) is multiple, and the multiple filter screens (400) are evenly distributed inside the filter cylinder (100), and the pore size of the multiple filter screens (400) decreases from bottom to top.

3. The sampling device for wastewater treatment as described in claim 1, characterized in that: The bottom end of the filter cartridge (100) is fitted with a baffle plate (500) via a fixing ring (501). The baffle plate (500) has several through slots and is used to block large impurities in the wastewater.

4. A sampling device for wastewater treatment as described in claim 3, characterized in that: A nozzle (301) is inclinedly arranged on one side wall of the filter cartridge (100). The air outlet of the nozzle (301) is inclined downward and the nozzle (301) is located below the bottom filter screen (400). The air inlet of the nozzle (301) is connected to an air supply pipe (300). An air pump (304) is provided on the air supply pipe (300). The nozzle (301) is used to spray high-pressure gas onto the surface of the insulating plate (500) through the air pump (304). A valve is provided on the air supply pipe (300).

5. A sampling device for wastewater treatment as described in claim 1, characterized in that: The filter cartridge (100) is fixed with a connecting pipe (202) at the upper center, and the water pumping pipe (200) and the connecting pipe (202) are detachably connected.

6. A sampling device for wastewater treatment as described in claim 5, characterized in that: The end of the pumping pipe (200) is provided with a first connector (201), the end of the connecting pipe (202) is provided with an internal threaded hole, and the end of the first connector (201) is provided with an external threaded surface that is compatible with the internal threaded hole of the connecting pipe (202).

7. A sampling device for wastewater treatment as described in claim 4, characterized in that: The gas supply pipe (300) and the nozzle (301) are detachably connected.

8. A sampling device for wastewater treatment as described in claim 7, characterized in that: The nozzle (301) is provided with a second connector (303) at its end, and the end of the second connector (303) is provided with an external thread surface. The end of the air supply pipe (300) is provided with a mounting block (302), and the mounting block (302) is provided with an internal thread hole adapted to the external thread surface of the second connector (303).

9. A sampling device for wastewater treatment as described in claim 8, characterized in that: The top of the filter cartridge (100) is detachably connected to a top cover (101) via a flange, and a connecting pipe (202) is provided on the top cover (101).

10. A sampling device for wastewater treatment as described in claim 9, characterized in that: A sealing gasket is provided on the surface of the top cover (101) that contacts the filter cartridge (100), and the sealing gasket is used to improve the sealing between the top cover (101) and the filter cartridge (100).

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