CN112098153B - Sewage treatment plant-based sampling device for heavy metal detection of sewage - Google Patents
Sewage treatment plant-based sampling device for heavy metal detection of sewage Download PDFInfo
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- CN112098153B CN112098153B CN202010945123.8A CN202010945123A CN112098153B CN 112098153 B CN112098153 B CN 112098153B CN 202010945123 A CN202010945123 A CN 202010945123A CN 112098153 B CN112098153 B CN 112098153B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
- G01N1/14—Suction devices, e.g. pumps; Ejector devices
Abstract
The invention discloses a sampling device for detecting heavy metal in sewage based on a sewage treatment plant, which comprises a main shell, a shell cover, an installation block, a conveying pipe and an extraction mechanism, wherein the shell cover is installed above the main shell, the installation block is embedded in the left side of the main shell, the conveying pipe is connected to the left side of the installation block, the extraction mechanism is connected to the left side of the conveying pipe and is fixed to the left side of the installation block, a sampling pipe is connected to the lower part of the extraction mechanism, a cavity is arranged at the right end of the conveying pipe, and the cavity is formed in the installation block. This sampling device for sewage heavy metal detection based on sewage treatment plant is provided with sample liquid deposit room and division board, and a plurality of independent spaces are separated into with sample liquid deposit room to the accessible division board, and follow-up every space all can deposit and collect sample liquid, and sample liquid deposit room can rotate simultaneously, conveniently adjusts the position that follow-up sample liquid was deposited, makes the device can carry out the sample operation to multiunit liquid.
Description
Technical Field
The invention relates to the technical field of sewage treatment, in particular to a sampling device for detecting heavy metal in sewage based on a sewage treatment plant.
Background
Sewage treatment is one of the important projects of environmental protection, harmful sewage need be handled its harmful substance through professional sewage treatment plant before discharging, make it reach the standard that discharges the requirement, reduce the influence that causes the environment, wherein getting rid of heavy metal in the water is sewage treatment's important step, also judge whether qualified factor of follow-up row's processing sewage is one, in the detection operation to heavy metal in the sewage before and after handling, accessible sampling device samples the water, then carry out heavy metal content detection to the water of sample, but current sampling device still has some weak points when using:
1. the existing sampling device can only sample one group of sample liquid at a time, when more sample liquids are needed to be adopted for detection and comparison, the sample liquids in the device need to be discharged outside and then sampled again, the operation is more complicated, and the sampling efficiency of the device and the continuous sampling capability of the device are reduced;
2. the existing sampling device is inconvenient to store the sample liquid taken out when in use, and the device can not continue sampling operation when the stored sample liquid is not taken out, thereby reducing the functionality of the device.
In order to solve the above problems, innovative design based on the original sampling device is urgently needed.
Disclosure of Invention
The invention aims to provide a sampling device for detecting heavy metal in sewage based on a sewage treatment plant, which solves the problems that the existing sampling device in the market can only sample one group of sample liquid at a time, when more sample liquids are required to be adopted for detection and comparison, the sampling operation needs to be carried out again after the sample liquids in the device are discharged, the operation is complicated, the existing sampling device is inconvenient to store the taken sample liquid during use, and the device cannot continue sampling operation when the stored sample liquid is not taken.
In order to achieve the purpose, the invention provides the following technical scheme: a sampling device for detecting heavy metal in sewage based on a sewage treatment plant comprises a main shell body, a shell cover, an installation block, a conveying pipe and an extraction mechanism, wherein the shell cover is installed above the main shell body, the left side of the main shell body is inlaid with the installation block, the left side of the installation block is connected with the conveying pipe, the left side of the conveying pipe is connected with the extraction mechanism, the extraction mechanism is fixed on the left side of the installation block, the lower part of the extraction mechanism is connected with a sampling pipe, the right end of the conveying pipe is provided with a cavity, the cavity is arranged in the installation block, a baffle is inlaid in the inner wall of the cavity, the left surface of the baffle is attached to the right end of the conveying pipe, a sample liquid storage chamber is arranged in the main shell body, a partition plate is inlaid in the sample liquid storage chamber, a fixed shell is inlaid in the sample liquid storage, and the outer end of the connecting pipe is inlaid with a sealing ring, and the interior of the sealing ring is provided with a first neodymium magnet, the outer surface of the connecting pipe is inlaid with a fixing ring, the outer surface of the fixing ring is provided with a first reset spring, the outer end of the first reset spring is mounted on the inner side surface of the fixing shell, the inner end of the connecting pipe is inlaid with a flexible hose, the inner end of the flexible hose is inlaid on the inner wall of the fixing shell, the left side of the baffle is provided with a second neodymium magnet, the upper end of the second neodymium magnet is provided with a connecting plate, the surface of the connecting plate is inlaid with a positioning plate, the positioning plate is positioned in the interior of the mounting block, the upper end of the connecting plate is inlaid with a pressing plate, the lower surface of the pressing plate is provided with a second reset spring, the lower end of the second reset spring is arranged on the upper surface, and the movable shaft penetrates the case cover.
Preferably, the drainage groove has been seted up on the surface of sampling tube, and the drainage groove equidistant setting to be linked together through extraction mechanism between sampling tube and the conveyer pipe.
Preferably, a clamping structure is formed between the cavity and the connecting pipe, the right end of the cavity is in an open structural design, and an integrated structure is formed between the cavity and the baffle.
Preferably, the middle part of the baffle is provided with a through opening, and the inner diameter of the through opening is smaller than that of the connecting pipe.
Preferably, a connecting shaft is installed below the sample liquid storage chamber, the sample liquid storage chamber is connected with the main shell through a bearing formed between the connecting shaft and the main shell, and the overlooking cross section of the sample liquid storage chamber is designed to be of a circular structure.
Preferably, the lower end of the partition plate is attached to the bottom of the sample solution storage chamber, and an integrated structure is formed between the partition plate and the sample solution storage chamber.
Preferably, an integrated structure is formed between the connecting pipe and the fixing ring, a sliding structure is formed between the connecting pipe and the fixing shell, and the inner end of the fixing shell is designed to be an open structure.
Preferably, the second neodymium magnet and the first neodymium magnet are arranged in opposite directions of different magnetic poles, the second neodymium magnet forms an up-and-down sliding structure through the connecting plate and the mounting block, and an integrated structure is formed between the connecting plate and the pressing plate.
Preferably, the lower extreme of loose axle is inlayed and is had the limiting plate, and constitutes the bearing between loose axle and the cap and connect to constitute unsmooth cooperation structure between limiting plate and the spread groove, the overlook cross-section of spread groove is the cruciform structural design simultaneously.
Compared with the prior art, the invention has the beneficial effects that: the sampling device for detecting the heavy metal in the sewage based on the sewage treatment plant;
(1) the sample liquid storage chamber and the partition plates are arranged, the sample liquid storage chamber can be divided into a plurality of independent spaces through the partition plates, sample liquid can be stored and collected in each subsequent space, and meanwhile, the sample liquid storage chamber can rotate, so that the subsequent sample liquid storage position can be conveniently adjusted, the device can sample a plurality of groups of liquids, and the functionality of the device is improved;
(2) the sample liquid storage chamber is provided with a connecting pipe and a flexible hose, the position of the sample liquid storage chamber can be fixed through the connection of the connecting pipe and the cavity, and the flexible hose can be driven to deform when the connecting pipe moves, so that the connecting pipe and the sample liquid storage chamber can be always communicated, and the subsequent sample liquid can be ensured to smoothly flow in;
(3) be provided with the baffle, first neodymium magnet and second neodymium magnet, appeal between first neodymium magnet of accessible and the second neodymium magnet draws in the cavity with the connecting pipe in, make sealing washer and baffle laminate, accomplish the connection of connecting pipe and conveyer pipe, follow-up accessible clamp plate is controlled the position of second neodymium magnet, first reset spring accessible drives the connecting pipe and removes when removing the appeal between first neodymium magnet and the second neodymium magnet, make appearance liquid deposit the room and become rotatable state, thereby deposit the position with appearance liquid and adjust and carry out the collection of new appearance liquid, the sample of multiple liquid can be carried out to the messenger's device, the work efficiency of the device is improved.
Drawings
FIG. 1 is a schematic view of the main sectional structure of the present invention;
FIG. 2 is a schematic top view of a sample solution storage chamber according to the present invention;
FIG. 3 is an enlarged view of the structure at A in FIG. 1 according to the present invention;
FIG. 4 is a schematic front view of the present invention;
FIG. 5 is a schematic view of a cross-sectional view of a connecting tube according to the present invention;
FIG. 6 is a schematic side sectional view of a seal ring according to the present invention;
fig. 7 is a schematic side sectional view of a second neodymium magnet according to the present invention.
In the figure: 1. a main housing; 2. a shell cover; 3. mounting blocks; 4. a delivery pipe; 5. a drawing mechanism; 6. a sampling tube; 601. a drainage groove; 7. a cavity; 8. a baffle plate; 801. a port; 9. a sample liquid storage chamber; 901. a connecting shaft; 10. a partition plate; 11. a stationary case; 12. a connecting pipe; 13. a seal ring; 14. a fixing ring; 15. a first return spring; 16. a flexible hose; 17. a first neodymium magnet; 18. a second neodymium magnet; 19. a connecting plate; 20. positioning a plate; 21. pressing a plate; 22. a second return spring; 23. connecting grooves; 24. a movable shaft; 2401. and a limiting plate.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-7, the present invention provides a technical solution: a sampling device for detecting heavy metal in sewage based on a sewage treatment plant comprises a main shell 1, a shell cover 2, an installation block 3, a conveying pipe 4, an extraction mechanism 5, a sampling pipe 6, a cavity 7, a baffle 8, a sample liquid storage chamber 9, a partition plate 10, a fixed shell 11, a connecting pipe 12, a sealing ring 13, a fixed ring 14, a first reset spring 15, a flexible hose 16, a first neodymium magnet 17, a second neodymium magnet 18, a connecting plate 19, a positioning plate 20, a pressing plate 21, a second reset spring 22, a connecting groove 23 and a movable shaft 24, wherein the shell cover 2 is installed above the main shell 1, the installation block 3 is embedded in the left side of the main shell 1, the conveying pipe 4 is connected to the left side of the installation block 3, the extraction mechanism 5 is connected to the left side of the conveying pipe 4, the extraction mechanism 5 is fixed to the left side of the installation block 3, the sampling pipe 6 is connected below the extraction mechanism, a cavity 7 is arranged inside the mounting block 3, a baffle plate 8 is embedded in the inner wall of the cavity 7, the left side surface of the baffle plate 8 is attached to the right end of the conveying pipe 4, a sample liquid storage chamber 9 is arranged inside the main shell 1, a partition plate 10 is embedded inside the sample liquid storage chamber 9, a fixed shell 11 is embedded inside the sample liquid storage chamber 9, a connecting pipe 12 is embedded inside the fixed shell 11, a sealing ring 13 is embedded at the outer end of the connecting pipe 12, a first neodymium magnet 17 is arranged inside the sealing ring 13, a fixed ring 14 is embedded on the outer layer surface of the connecting pipe 12, a first return spring 15 is arranged on the outer side surface of the fixed ring 14, the outer end of the first return spring 15 is arranged on the inner side surface of the fixed shell 11, a flexible hose 16 is embedded at the inner end of the connecting pipe 12, the inner end of the flexible hose 16 is embedded on the inner wall of the fixed shell 11, a second neodymium magnet 18 is, a connecting plate 19 is arranged at the upper end of the second neodymium magnet 18, a positioning plate 20 is embedded in the surface of the connecting plate 19, the positioning plate 20 is located inside the mounting block 3, a pressing plate 21 is embedded at the upper end of the connecting plate 19, a second return spring 22 is arranged on the lower surface of the pressing plate 21, the lower end of the second return spring 22 is arranged on the upper surface of the mounting block 3, a connecting groove 23 is formed in the upper surface of the partition plate 10, a movable shaft 24 is arranged above the connecting groove 23, and the movable shaft 24 penetrates through the housing cover 2;
the drainage grooves 601 are formed in the surface of the sampling tube 6, the drainage grooves 601 are arranged at equal intervals, the sampling tube 6 is communicated with the conveying pipe 4 through the extraction mechanism 5, and due to the structural design, the sampling tube 6 can sample water bodies at different positions through the drainage grooves 601, so that the sampling uniformity is improved;
a clamping structure is formed between the cavity 7 and the connecting pipe 12, the right end of the cavity 7 is in an open structural design, an integrated structure is formed between the cavity 7 and the baffle 8, and the structural design can limit the sample liquid storage chamber 9 through the subsequent connection of the cavity 7 and the connecting pipe 12, so that the sample liquid storage chamber 9 can be kept stable;
the middle part of the baffle 8 is provided with a through hole 801, and the inner diameter of the through hole 801 is smaller than that of the connecting pipe 12, so that the subsequent sample liquid can smoothly enter the connecting pipe 12 through the through hole 801 by the structural design, and the baffle 8 is prevented from blocking the conveying of the sample liquid;
a connecting shaft 901 is arranged below the sample liquid storage chamber 9, the sample liquid storage chamber 9 is connected with the main shell 1 through a bearing formed between the connecting shaft 901, the overlooking cross section of the sample liquid storage chamber 9 is in a circular structural design, and the subsequent sample liquid storage chamber 9 can rotate under the action of the connecting shaft 901 due to the structural design, so that the position for collecting the subsequent sample liquid is adjusted, and different sample liquids are conveniently collected;
the lower end of the partition plate 10 is attached to the bottom of the sample liquid storage chamber 9, and the partition plate 10 and the sample liquid storage chamber 9 form an integrated structure, and the internal space of the sample liquid storage chamber 9 can be partitioned by the partition plate 10 through the structural design, so that a plurality of single storage spaces which are not affected with each other can be formed, and different sample liquids can be conveniently collected subsequently;
an integrated structure is formed between the connecting pipe 12 and the fixing ring 14, a sliding structure is formed between the connecting pipe 12 and the fixing shell 11, and the inner end of the fixing shell 11 is in an open structural design, so that the subsequent connecting pipe 12 can be stretched in the fixing shell 11, the subsequent connecting pipe can be connected with the baffle 8, and the sample liquid is guided;
the second neodymium magnet 18 and the first neodymium magnet 17 are arranged in opposite directions with different magnetic poles, the second neodymium magnet 18 forms a vertical sliding structure through the connecting plate 19 and the mounting block 3, and the connecting plate 19 and the pressing plate 21 form an integrated structure, the structural design can control the position of the connecting pipe 12 through the mutual attraction of the first neodymium magnet 17 and the second neodymium magnet 18, and meanwhile, the position of the second neodymium magnet 18 can be controlled through the pressing plate 21 subsequently, and the attraction of the second neodymium magnet 18 to the first neodymium magnet 17 is released;
limiting plates 2401 are inlaid at the lower end of the movable shaft 24, a bearing is formed between the movable shaft 24 and the shell cover 2 and connected, a concave-convex matching structure is formed between the limiting plates 2401 and the connecting grooves 23, meanwhile, the overlooking cross section of the connecting grooves 23 is in a cross-shaped structural design, the structural design can enable the sample liquid storage chamber 9 to be driven to rotate by the aid of the rotation matching limiting plates 2401 of the follow-up movable shaft 24 with the same structure, and the sample liquid storage position is adjusted.
The working principle is as follows: when the sampling device for detecting heavy metal in sewage based on a sewage treatment plant is used, firstly, as shown in fig. 1 and 4, the sampling tube 6 can be inserted into a liquid to be sampled when the sampling device is used, the liquid is extracted by the extraction mechanism 5, the extraction mechanism 5 can be a small water pump, the liquid enters the conveying tube 4 through the drainage groove 601 on the surface of the sampling tube 6, as shown in fig. 2 and 3, the liquid enters the conveying tube 4 and enters the connecting tube 12 through the through hole 801, as shown in fig. 5, and then enters the sample liquid storage chamber 9 through the flexible hose 16, the collection and storage of the sample liquid are completed, and the flexible hose 16 can be a corrugated tube;
when another liquid needs to be sampled, the position for collecting the sample liquid can be adjusted, as shown in fig. 6 and 7, the pressing plate 21 can be pressed downward, the pressing plate 21 pushes the second neodymium magnet 18 downward through the connecting plate 19 to move, and at the same time, the second return spring 22 is compressed, so that the positions of the second neodymium magnet 18 and the first neodymium magnet 17 are staggered, at this time, the attraction force applied to the first neodymium magnet 17 will disappear, the first return spring 15 will push the connecting pipe 12 through the fixing ring 14 to move, the flexible hose 16 will be compressed, at the same time, the connecting pipe 12 is separated from the connection with the cavity 7 and is retracted into the fixing shell 11, at this time, the sample liquid storage chamber 9 becomes rotatable, the movable shaft 24 can be rotated to drive the sample liquid storage chamber 9 to rotate through the cooperation of the limiting plate 2401 and the connecting groove 23, so that the sample liquid storage chamber 9 rotates through the connecting shaft 901, when a next set of connecting pipe 12 moves to the right side of cavity 7, can loosen clamp plate 21, make second reset spring 22 promote clamp plate 21 and reset, drive second neodymium magnet 18 through connecting plate 19 and remove, make second neodymium magnet 18 attract first neodymium magnet 17, pulling connecting pipe 12 and removing in fixed shell 11, compress first reset spring 15 simultaneously, make the left end of connecting pipe 12 laminate through sealing washer 13 and baffle 8, the position of appearance liquid storage chamber 9 will be locked simultaneously, can carry out next sample operation, analogize so, the device can realize the sample to different liquid and deposit the operation, increase the functionality and the use convenience of device.
Those not described in detail in this specification are within the skill of the art.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention can be made without departing from the spirit and scope of the invention.
Claims (7)
1. The utility model provides a sewage heavy metal detects uses sampling device based on sewage treatment plant, includes main casing body (1), cap (2), installation piece (3), conveyer pipe (4) and extraction mechanism (5), its characterized in that: the device comprises a main shell body (1), wherein a shell cover (2) is installed above the main shell body (1), an installation block (3) is embedded in the left side of the main shell body (1), a conveying pipe (4) is connected to the left side of the installation block (3), an extraction mechanism (5) is connected to the left side of the conveying pipe (4), the extraction mechanism (5) is fixed on the left side of the installation block (3), a sampling pipe (6) is connected to the lower portion of the extraction mechanism (5), a cavity (7) is arranged at the right end of the conveying pipe (4), the cavity (7) is arranged in the installation block (3), a baffle (8) is embedded in the inner wall of the cavity (7), the left side surface of the baffle (8) is attached to the right end of the conveying pipe (4), a sample liquid storage chamber (9) is arranged in the main shell body (1), a partition plate (10) is embedded in the sample liquid storage chamber (9), and the inner space of the sample liquid storage chamber (, so that a plurality of single storage spaces which are not mutually influenced can be formed, and different sample liquids can be conveniently collected subsequently; and a fixed shell (11) is embedded in each storage space of the sample liquid storage chamber (9), the inner part of the fixed shell (11) is nested with a connecting pipe (12), the outer end of the connecting pipe (12) is embedded with a sealing ring (13), a first neodymium magnet (17) is arranged inside the sealing ring (13), a fixing ring (14) is embedded on the surface of the outer layer of the connecting pipe (12), and the outer side surface of the fixed ring (14) is provided with a first return spring (15), the outer end of the first return spring (15) is arranged on the inner side surface of the fixed shell (11), the inner end of the connecting pipe (12) is embedded with a flexible hose (16), the inner end of the telescopic hose (16) is embedded in the inner wall of the fixed shell (11), a sliding structure is formed between the connecting pipe (12) and the fixed shell (11), and the inner end of the fixed shell (11) is designed into an open structure; a second neodymium magnet (18) is arranged on the left side of the baffle (8), the second neodymium magnet (18) and the first neodymium magnet (17) are arranged in opposite directions with different magnetic poles, and the position of the connecting pipe (12) can be controlled through mutual attraction of the first neodymium magnet (17) and the second neodymium magnet (18); a connecting plate (19) is arranged at the upper end of the second neodymium magnet (18), a positioning plate (20) is embedded in the surface of the connecting plate (19), the positioning plate (20) is located inside the mounting block (3), a pressing plate (21) is embedded in the upper end of the connecting plate (19), a second reset spring (22) is arranged on the lower surface of the pressing plate (21), the lower end of the second reset spring (22) is arranged on the upper surface of the mounting block (3), a connecting groove (23) is formed in the upper surface of the partition plate (10), a movable shaft (24) is arranged above the connecting groove (23), and the movable shaft (24) penetrates through the shell cover (2);
a connecting shaft (901) is arranged below the sample liquid storage chamber (9), the sample liquid storage chamber (9) is connected with the main shell (1) through a bearing formed between the connecting shaft (901), and the overlooking section of the sample liquid storage chamber (9) is designed into a circular structure; the lower end of the partition plate (10) is attached to the bottom of the sample liquid storage chamber (9), and an integrated structure is formed between the partition plate (10) and the sample liquid storage chamber (9);
after one liquid is sampled and when another liquid needs to be sampled, a pressing plate (21) is pressed downwards, the pressing plate (21) pushes a second neodymium magnet (18) downwards through a connecting plate (19) to move, meanwhile, a second return spring (22) is compressed to enable the positions of the second neodymium magnet (18) and a first neodymium magnet (17) to be staggered, the attraction force borne by the first neodymium magnet (17) disappears, a first return spring (15) pushes a connecting pipe (12) to move through a fixed ring (14), a telescopic hose (16) is compressed, meanwhile, the connecting pipe (12) is separated from the cavity (7) and is retracted into a fixed shell (11), at the moment, a sample liquid storage chamber (9) becomes a rotatable state, a movable shaft (24) is rotated to drive the sample liquid storage chamber (9) to rotate, and the sample liquid storage chamber (9) rotates in a main shell (1) through a connecting shaft (901), when a next group of connecting pipes (12) move to the right side of the cavity (7), the pressing plate (21) is loosened, the second reset spring (22) is made to push the pressing plate (21) to reset, the second neodymium magnet (18) is driven to move through the connecting plate (19), the second neodymium magnet (18) attracts the first neodymium magnet (17), the connecting pipes (12) are pulled to move in the fixed shell (11), meanwhile, the first reset spring (15) is compressed, the left end of the connecting pipes (12) is attached to the baffle (8) through the sealing ring (13), meanwhile, the positions of the sample liquid storage chambers (9) are locked, next sampling operation can be conducted, and the like, so that sampling and storage operations of different liquids are achieved.
2. The sampling device for detecting heavy metal in sewage water of a sewage treatment plant according to claim 1, wherein: drainage grooves (601) are formed in the surface of the sampling tube (6), the drainage grooves (601) are arranged at equal intervals, and the sampling tube (6) is communicated with the conveying pipe (4) through an extraction mechanism (5).
3. The sampling device for detecting heavy metal in sewage water of a sewage treatment plant according to claim 1, wherein: a clamping structure is formed between the cavity (7) and the connecting pipe (12), the right end of the cavity (7) is in an open structural design, and an integrated structure is formed between the cavity (7) and the baffle (8).
4. The sampling device for detecting heavy metal in sewage water of a sewage treatment plant according to claim 1, wherein: opening (801) are seted up at the middle part of baffle (8), and the internal diameter of opening (801) is less than the internal diameter of connecting pipe (12).
5. The sampling device for detecting heavy metal in sewage water of a sewage treatment plant according to claim 1, wherein: an integrated structure is formed between the connecting pipe (12) and the fixing ring (14).
6. The sampling device for detecting heavy metal in sewage water of a sewage treatment plant according to claim 1, wherein: the second neodymium magnet (18) forms a vertical sliding structure through the connecting plate (19) and the mounting block (3), and an integrated structure is formed between the connecting plate (19) and the pressing plate (21).
7. The sampling device for detecting heavy metal in sewage water of a sewage treatment plant according to claim 1, wherein: limiting plates (2401) are inlaid at the lower end of the movable shaft (24), the movable shaft (24) and the shell cover (2) are connected through bearings, concave-convex matching structures are formed between the limiting plates (2401) and the connecting grooves (23), and meanwhile the overlooking cross section of the connecting grooves (23) is designed to be a cross structure.
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| CN202010945123.8A CN112098153B (en) | 2020-09-10 | 2020-09-10 | Sewage treatment plant-based sampling device for heavy metal detection of sewage |
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| CN202010945123.8A CN112098153B (en) | 2020-09-10 | 2020-09-10 | Sewage treatment plant-based sampling device for heavy metal detection of sewage |
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| CN113188839A (en) * | 2021-03-24 | 2021-07-30 | 山东蓝一检测技术有限公司 | Urban underground sewage detection sampling device for environmental monitoring |
| CN113716807A (en) * | 2021-09-08 | 2021-11-30 | 贵州丝域环能科技有限公司 | Water source purification treatment and recycling process based on environment-friendly pharmaceutical wastewater |
| CN113552310B (en) * | 2021-09-17 | 2021-12-03 | 海安嘉臣环境科技有限公司 | Online automatic monitoring system for water quality of wastewater discharge port |
| CN113567199B (en) * | 2021-09-27 | 2021-12-10 | 东营思达石油化工有限公司 | Multi-cavity sampler for detecting discharged industrial sewage of petrochemical enterprises |
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| CN108051258A (en) * | 2018-02-07 | 2018-05-18 | 广州发展集团股份有限公司 | Sampling of wastewater system and its control method |
| CN108709773A (en) * | 2018-08-02 | 2018-10-26 | 芜湖水淼环保科技有限公司 | A kind of portable sampling of wastewater device |
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