Water quality detection device for investigation of polluted site

Abstract

The utility model discloses a water quality detection device for investigating a polluted site, and relates to the technical field of detection devices, the water quality detection device comprises a sampling tube, a length adjusting assembly and a push-pull assembly, the sampling tube comprises an outer tube and an inner tube, the inner tube is arranged in the outer tube, and three groups of partition plates are fixedly connected between the outer tube and the inner tube; a water storage cavity is formed among the outer pipe, the inner pipe and the partition plate, water inlets are formed in the left side wall and the right side wall of the upper end of the inner pipe, baffles are rotationally connected to the positions, corresponding to the two water inlets, in the water storage cavity through rotating shafts, and water level sensors are fixedly installed in the water storage cavity in the inner walls of the left side and the right side of the outer pipe; and an electromagnet is fixedly mounted in the inner pipe and below the water inlet. The device has the advantages that when secondary sampling is carried out after primary sampling is completed, water flow of secondary sampling cannot enter the primary sampling pipe, and the water flow of secondary sampling is not mixed with sampled water, so that possible pollution crossing can be avoided, and the accuracy and the reliability of a sampling result are ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of detection devices, in particular to a water quality detection device for investigating a polluted site. Background Art

[0002] With the development of modern industry and the two-way operation of sustainable development strategy, environmental issues have received close attention from the whole society, so environmental protection work is urgent. People's survival, life and production are inseparable from water, and the protection of water resources is the top priority of environmental protection. Although my country is a country with relatively abundant water resources, with the development of industrial technology, water resources have been seriously polluted. At present, water quality problems have become very prominent. Therefore, it is of great significance to strengthen water quality monitoring.

[0003] For example, a groundwater sample collection and detection device for a contaminated site disclosed in a Chinese patent (CN202220425971.0) includes a water sample collector and a water quality detection box; the water sample collector includes a water sample collection tube, an inner tube is provided in the water sample collection tube, a collection port is provided at the bottom of the inner tube, a plurality of sub-collection areas are provided between the water sample collection tube and the inner tube, a sample inlet connection port is provided at the upper end of each sub-collection area corresponding to the inner tube, a sample discharge connection port is provided at the lower end of the water sample collection tube corresponding to each sub-collection area, a drop-in liquid level sensor is installed at the lower end of the outer wall of the inner tube, a piston is provided in the inner tube, the piston is connected to a piston rod, the piston rod passes through the water sample collection tube and is installed with a push-pull handle through a scale connecting rod assembly, a spring is fixed between the top of the piston and the top of the water sample collection tube, and a descending and lifting handle is installed on the top of the water sample collection tube through the assembly connecting rod assembly. The utility model can quickly and efficiently complete the collection and detection of water samples of different depths, and provide more reliable information for the investigation and remediation of contaminated sites.

[0004] However, the above device still has certain problems. When the secondary sampling is carried out after the primary sampling is completed, since the water inlet of the primary sampling tube is in an open state, the water during the secondary sampling can easily enter the primary sampling tube, thereby contaminating the water quality of the primary sampling tube, causing inaccurate test results and affecting the accuracy of the water quality results. In view of the above problems, a water quality detection device for contaminated site investigation is proposed to solve them. Utility Model Content

[0005] In order to solve the above technical problems, a water quality detection device for contaminated site investigation is provided, which solves the above-mentioned problem that when the secondary sampling is carried out after the primary sampling is completed, the water inlet of the primary sampling tube is in an open state, and the moisture during the secondary sampling is easy to enter the primary sampling tube, thereby contaminating the water quality of the primary sampling tube, causing inaccurate detection results and affecting the accuracy of the water quality results.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is: a water quality detection device for contaminated site investigation, including a sampling tube, a length adjustment component and a push-pull component, the sampling tube includes an outer tube and an inner tube, the inner tube is arranged inside the outer tube, three groups of partition plates are fixedly connected between the outer tube and the inner tube, a water storage cavity is formed between the outer tube, the inner tube and the partition plates, water inlets are opened on the left and right side walls of the upper end of the inner tube, baffles are rotatably connected to the water storage cavity at positions corresponding to the two water inlets through a rotating shaft, water level sensors are fixedly installed inside the water storage cavity on the inner walls of the left and right sides of the outer tube, and electromagnets are fixedly installed inside the inner tube and below the water inlet.

[0007] Preferably, the length adjustment assembly includes a first sleeve fixedly connected to the top of the outer tube, a second sleeve slidably connected inside the first sleeve, and a third sleeve slidably connected inside the second sleeve.

[0008] Preferably, a piston is slidably connected to the inner tube, and a sliding groove is provided through the inner part of the piston.

[0009] Preferably, a mounting plate is fixedly connected at the middle position inside the sliding groove, telescopic rods are fixedly connected to the left and right sides of the mounting plate, and the ends of the two telescopic rods away from the mounting plate are fixedly connected to top blocks, the cross-section of the top blocks is conical, and compression springs are sleeved on the outer circumferences of the two telescopic rods.

[0010] Preferably, the push-pull assembly comprises a connecting rod fixedly connected to the top surface of the piston, a first thread groove is formed on the top of the connecting rod, and a thread block is threadedly connected inside the first thread groove.

[0011] Preferably, an extension rod is fixedly connected to the top of the threaded block, and a second thread groove is formed at the top of the extension rod.

[0012] Preferably, a conical member is fixedly connected to the bottom of the outer tube, and a blocking block is fixedly connected inside the conical member.

[0013] Preferably, a drainage port is provided on the outside of the outer tube and below the water storage chamber, and a sealing plug is inserted into the drainage port.

[0014] Compared with the prior art, the utility model has the following advantages: the utility model provides elastic force to push the top block to move by setting a compression spring, and the top block will push the baffle open to allow water to flow into the water storage chamber. When the water level inside the water storage chamber contacts the water level sensor, the water level sensor receives a signal and controls the electromagnet to energize. At this time, the electromagnet generates magnetism to adsorb the baffle, thereby sealing the water inlet. The above scheme can ensure that when the sampling tube performs secondary sampling after the first-level sampling is completed, the water flow of the secondary sampling will no longer enter the first-level sampling tube, and the water flow of the secondary sampling will not mix with the sampled water, which can avoid possible cross-contamination and ensure the accuracy and reliability of the sampling results. By maintaining the independence of the sampled water flow, it can be ensured that the water sample at each sampling point is representative, reflecting the actual water quality conditions and avoiding distortion caused by mixing. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 It is the sampling tube in the utility model;

[0017] Figure 3 It is the length adjustment component in the utility model;

[0018] Figure 4 It is the push-pull assembly in the utility model;

[0019] Figure 5 for Figure 2 A partial enlarged view of the middle A;

[0020] Figure 6 for Figure 1 A partial enlarged view of point B in the middle.

[0021] The numbers in the figure are:

[0022] 1. Sampling tube; 101. Outer tube; 102. Inner tube; 103. Partition plate; 104. Water storage chamber; 105. Water inlet; 106. Rotating shaft; 107. Baffle; 108. Electromagnet; 109. Water level sensor;

[0023] 2. Length adjustment component; 201. First sleeve; 202. Second sleeve; 203. Third sleeve;

[0024] 3. Push-pull assembly; 301. Connecting rod; 302. First thread groove; 303. Thread block; 304. Extension rod; 305. Second thread groove;

[0025] 4. Piston; 5. Sliding groove; 6. Mounting plate; 7. Telescopic rod; 8. Top block; 9. Compression spring; 10. Stop block; 11. Drain port; 12. Sealing plug; 13. Conical part. DETAILED DESCRIPTION

[0026] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations.

[0027] Reference Figure 1-6 As shown, a water quality detection device for contaminated site investigation includes a sampling tube 1, a length adjustment component 2 and a push-pull component 3. The sampling tube 1 includes an outer tube 101 and an inner tube 102. The inner tube 102 is arranged inside the outer tube 101. Three groups of partition plates 103 are fixedly connected between the outer tube 101 and the inner tube 102. A water storage chamber 104 is formed between the outer tube 101, the inner tube 102 and the partition plates 103. Water inlets 105 are provided on the left and right side walls of the upper end of the inner tube 102. Baffles 107 are rotatably connected to the water storage chamber 104 at positions corresponding to the two water inlets 105 through a rotating shaft 106. Water level sensors 109 are fixedly installed inside the water storage chamber 104 on the inner walls of the left and right sides of the outer tube 101. Electromagnets 108 are fixedly installed inside the inner tube 102 and below the water inlets 105.

[0028] Specifically, the length adjustment component 2 includes a first sleeve 201 fixedly connected to the top of the outer tube 101, a second sleeve 202 is slidably connected inside the first sleeve 201, and a third sleeve 203 is slidably connected inside the second sleeve 202. The length adjustment component 2 is similar to the telescopic structure of a fishing rod and will not be elaborated on here.

[0029] Specifically, the inner tube 102 is slidably connected with a piston 4, a sliding groove 5 is penetrated through the inner tube 4, and the piston 4 is in close contact with the inner wall of the inner tube 102 to achieve a sealing effect.

[0030] Specifically, a mounting plate 6 is fixedly connected at the middle position inside the sliding groove 5, and telescopic rods 7 are fixedly connected on both sides of the mounting plate 6. The telescopic rods 7 guide the movement of the top block 8. The ends of the two telescopic rods 7 away from the mounting plate 6 are fixedly connected to the top blocks 8. The cross-section of the top blocks 8 is conical, and compression springs 9 are sleeved on the outer circumferences of the two telescopic rods 7. The compression springs 9 provide elastic force to push the top blocks 8 to move. The top blocks 8 can push the baffle 107 to open to allow water to flow into the water storage chamber 104.

[0031] Furthermore, the push-pull assembly 3 includes a connecting rod 301 fixedly connected to the top surface of the piston 4, a first thread groove 302 is provided on the top of the connecting rod 301, and a thread block 303 is threadedly connected inside the first thread groove 302. The push-pull assembly 3 is used to control the movement of the piston 4. When the push-pull assembly 3 is pulled, a negative pressure state is formed inside the inner tube 102, thereby attracting the water flow.

[0032] Optionally, an extension rod 304 is fixedly connected to the top of the threaded block 303, and a second thread groove 305 is provided at the top of the extension rod 304. Through the threaded connection of the extension rod 304, it is conceivable that the push-pull assembly 3 can be extended to any length.

[0033] A conical member 13 is fixedly connected to the bottom of the outer tube 101 , and a blocking block 10 is fixedly connected inside the conical member 13 . The conical member 13 is used to reduce the resistance of the sampling tube 1 entering the water, and the blocking block 10 can prevent the piston 4 from slipping out of the inner tube 102 .

[0034] Specifically, a drain port 11 is provided outside the outer tube 101 and below the water storage chamber 104 , and a sealing plug 12 is inserted into the drain port 11 . The water collected in the water storage chamber 104 can be discharged by opening the sealing plug 12 .

[0035] Working principle: Before sampling, the electromagnet 108 and the water level sensor 109 need to be connected to an external power supply, and then the length adjustment component 2 and the push-pull component 3 are adjusted to a suitable length. When sampling, pull the push-pull component 3 to drive the piston 4 to move until the piston 4 moves to the water inlet 105. The compression spring 9 provides elastic force to push the top block 8 to move. The top block 8 will push the baffle 107 open to allow water to enter the water storage chamber 104. When the water level inside the water storage chamber 104 contacts the water level sensor 109, the water level sensor 109 receives a signal and controls the electromagnet 108 to energize. At this time, the electromagnet 108 generates magnetism to adsorb the baffle 107, thereby sealing the water inlet 105. At this time, the top block 8 cannot push the baffle 107 open, and the water cannot enter the water storage chamber 104.

[0036] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and the specification only describe the principles of the utility model. The utility model may be subject to various changes and improvements without departing from the spirit and scope of the utility model. These changes and improvements fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A water quality detection device for polluted site investigation, characterized in that: The invention comprises a sampling tube (1), a length adjustment component (2) and a push-pull component (3), wherein the sampling tube (1) comprises an outer tube (101) and an inner tube (102), wherein the inner tube (102) is arranged inside the outer tube (101), and three groups of partition plates (103) are fixedly connected between the outer tube (101) and the inner tube (102), and a water storage cavity (104) is formed between the outer tube (101), the inner tube (102) and the partition plates (103), and the inner tube (102) is provided with a plurality of partition plates (103) arranged inside the outer tube (101). Water inlets (105) are provided on both left and right side walls of the upper end (102); baffles (107) are rotatably connected to the water storage chamber (104) and the corresponding positions of the two water inlets (105) via a rotating shaft (106); water level sensors (109) are fixedly installed inside the water storage chamber (104) on the left and right inner walls of the outer tube (101); and electromagnets (108) are fixedly installed inside the inner tube (102) and below the water inlets (105).

2. The water quality detection device for contaminated site investigation according to claim 1 is characterized by: The length adjustment assembly (2) comprises a first sleeve (201) fixedly connected to the top of the outer tube (101), a second sleeve (202) slidably connected inside the first sleeve (201), and a third sleeve (203) slidably connected inside the second sleeve (202).

3. The water quality detection device for contaminated site investigation according to claim 1 is characterized by: The inner tube (102) is slidably connected to a piston (4), and a sliding groove (5) is provided through the piston (4).

4. The water quality detection device for contaminated site investigation according to claim 3 is characterized by: A mounting plate (6) is fixedly connected to the middle position inside the sliding groove (5), telescopic rods (7) are fixedly connected to the left and right sides of the mounting plate (6), and a top block (8) is fixedly connected to one end of the two telescopic rods (7) away from the mounting plate (6), the cross section of the top block (8) is conical, and compression springs (9) are sleeved on the outer circumference of the two telescopic rods (7).

5. The water quality detection device for contaminated site investigation according to claim 1 is characterized by: The push-pull assembly (3) comprises a connecting rod (301) fixedly connected to the top surface of the piston (4), a first thread groove (302) is provided on the top of the connecting rod (301), and a thread block (303) is threadedly connected inside the first thread groove (302).

6. The water quality detection device for contaminated site investigation according to claim 5 is characterized by: An extension rod (304) is fixedly connected to the top of the threaded block (303), and a second thread groove (305) is formed at the top of the extension rod (304).

7. The water quality detection device for contaminated site investigation according to claim 1 is characterized by: A conical member (13) is fixedly connected to the bottom of the outer tube (101), and a blocking block (10) is fixedly connected inside the conical member (13).

8. The water quality detection device for contaminated site investigation according to claim 1 is characterized by: A drainage port (11) is provided on the outside of the outer tube (101) and below the water storage chamber (104), and a sealing plug (12) is inserted into the drainage port (11).

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