Wastewater extraction equipment for environment detection

Abstract

The invention relates to the technical field of wastewater extraction, and discloses wastewater extraction equipment for environmental detection, which comprises an extraction equipment main body, a retracting and releasing mechanism is arranged at the top of the extraction equipment main body, an extraction mechanism is arranged at the bottom of the retracting and releasing mechanism, and a discharging mechanism is arranged on the surface of the extraction mechanism. According to the wastewater extraction equipment for environment detection, as the internal pressure of the mounting shell is greater than the external pressure, wastewater enters the interior of the placement box through the barrel and the feeding pipe at the moment, so that the purpose of extracting the wastewater is achieved, and the purpose of detecting the wastewater at different depths can be achieved by extracting the wastewater at different positions; according to the wastewater extraction device, the wastewater detection effect is improved, wastewater at different depths can be extracted at a time without being separated for multiple times, the wastewater extraction efficiency is improved, and meanwhile, the wastewater in the placement box can be taken out, so that the wastewater can be conveniently detected in the later period.

Description

Technical Field

[0001] The invention relates to the technical field of wastewater extraction, in particular to wastewater extraction equipment for environmental detection. Background Art

[0002] Wastewater extraction generally refers to the process of separating, recovering or removing specific substances from wastewater. This process is of great significance in wastewater treatment and environmental protection because it can reduce pollution to natural water bodies while recovering valuable resources. Large suspended solids and part of particulate matter are removed through screens and sedimentation tanks; then acid hydrolysis is carried out to improve the biodegradability of wastewater; then the sequencing batch activated sludge process (SBR) is used to remove organic matter; deep treatment uses sand filtration and activated carbon adsorption to remove residual organic matter and color; finally, ultraviolet disinfection is used to ensure water quality safety. Pretreatment uses high-efficiency sedimentation and flotation to remove suspended solids and part of grease; anaerobic digestion uses UASB reactor to degrade organic matter and produce biogas.

[0003] The patent network announcement number CN 106872216 A discloses a sampling device for sewage quality detection. The technical problem to be solved by the present invention is to provide a sewage quality detection sampling device that can go deep into the water to sample water at different depths, and has easy sewage extraction, good sewage detection stability, and high accuracy. In order to solve the above technical problems, the present invention provides such a sewage quality detection sampling device, including a telescopic rod, a handle, a guide sleeve, a first pulley, a bearing seat, a rotating shaft, a winding reel, etc.; the right end of the telescopic rod is connected to a handle, and the top and bottom of the left end of each section of the telescopic rod are connected to a guide sleeve, the top and bottom of the telescopic rod at the far left are both installed with a first pulley, and the top and bottom of the telescopic rod at the far right are both installed with a bearing seat. The present invention achieves the effect of being able to go deep into the water to sample water at different depths, easy sewage extraction, good sewage detection stability, and high accuracy.

[0004] The applicant believes that the following disadvantages exist: when testing wastewater quality at different depths, the sampling device needs to be placed in wastewater at different depths for multiple times for testing, which is time-consuming, labor-intensive and results in low efficiency in testing wastewater and defects. Summary of the invention

[0005] The object of the present invention is to provide a wastewater extraction device for environmental testing to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a wastewater extraction device for environmental testing, comprising an extraction device body, a retractable mechanism is arranged on the top of the extraction device body, an extraction mechanism is arranged on the bottom of the retractable mechanism, and a discharging mechanism is arranged on the surface of the extraction mechanism.

[0007] The extraction mechanism includes a mounting shell, which is arranged on the right side of the extraction device body. A threaded rod is rotatably connected in the mounting shell, and the threaded rod is arranged in the middle of the mounting shell. A first motor is fixedly connected to the top of the threaded rod, and a fixing bracket is fixedly connected to the surface of the first motor. The fixing bracket is fixedly connected to the top of the mounting shell, and a placement box is threadedly connected to the surface of the threaded rod.

[0008] Preferably, the number of the placement boxes is three, the three placement boxes are distributed in the installation shell at equal intervals, the three placement boxes are evenly arranged, and the placement boxes are rectangular in design. Wastewater can be placed through the arranged placement boxes.

[0009] Preferably, a discharge pipe is fixedly connected to the front side of the placement box, and a feed pipe is fixedly connected to both sides of the placement box. The discharge pipe and the feed pipe are both arranged in the installation shell. Through the arranged discharge pipe and feed pipe, the function of wastewater in and out can be realized.

[0010] Preferably, cylinders are fixedly connected to both sides of the mounting shell, six of which are arranged, and three of which are arranged on one side of the mounting shell. The cylinders are distributed at equal intervals, and wastewater can be circulated through the arranged cylinders.

[0011] Preferably, a support member is fixedly connected to the rear side of the installation shell, a slide groove is provided in the support member, a rectangular plate is slidably connected in the slide groove, the rectangular plate is fixedly connected to the rear surface of the placement box, and filter holes of uniform size are provided at the bottom of the installation shell. When the placement box moves up and down, the rectangular plate slides in the slide groove provided in the support member, which can ensure that the placement box can move up and down.

[0012] Preferably, the discharging mechanism includes an installation groove, which is opened on the front side of the installation shell, a baffle is inserted in the installation groove, a handle is fixedly connected to the front surface of the baffle, connecting plates are fixedly connected on both sides of the baffle, four connecting plates are provided, and the four connecting plates are of the same size. A limiting groove is opened in the connecting plate, a limiting rod is inserted in the limiting groove, and the limiting rod is fixedly connected to the surface of the installation shell, so that the baffle is provided to block the wastewater.

[0013] Preferably, the surface of the limit rod is provided with a thread, and the surface of the limit rod is threadedly connected with a locking nut, and the locking nut is arranged on the front side of the mounting shell. The locking nut is removed from the surface of the limit rod by rotating the locking nut, and then the baffle is pulled by the handle. At this time, the limit plate is disengaged from the limit groove opened inside the positioning plate, so that the baffle can be removed.

[0014] Preferably, the top and bottom of the baffle are fixedly connected with fixing plates, both sides of the fixing plates are fixedly connected with limiting plates, the front surface of the mounting shell is fixedly connected with a positioning plate, the surface of the positioning plate is provided with a limiting groove, the limiting plate is inserted into the limiting groove, and the baffle can be preliminarily limited by the arranged positioning plate and limiting plate.

[0015] Preferably, the retracting and releasing mechanism includes vertical plates, which are fixedly connected to both sides of the top of the extraction equipment body, and a winding roller is rotatably connected between the two vertical plates. A second motor is fixedly connected to the front side of the winding roller, and the second motor is fixedly connected to the surface of the front vertical plate. The rope can be moved up and down by setting the winding roller.

[0016] Preferably, a rope is wound around the surface of the winding roller, and the rope is fixedly connected to the top of the mounting shell, a mounting plate is fixedly connected to the right side of the extraction device body, a placement plate is fixedly connected inside the mounting plate, a support roller is rotatably connected inside the mounting plate, the rope is arranged on the surface of the support roller, and limiting members are fixedly connected on both sides of the surface of the support plate, and the rope is arranged on one side of the limiting member. When the winding roller rotates, the rope slowly moves downward, which can achieve the purpose of moving the mounting shell downward, and can automatically place the mounting shell inside the wastewater that needs to be detected.

[0017] Compared with the prior art, the present invention provides a wastewater extraction device for environmental testing, which has the following beneficial effects: The wastewater extraction equipment for environmental testing, since the pressure inside the installation shell is greater than the external pressure, the wastewater will pass through the cylinder and the feed pipe into the interior of the placement box, thereby completing the purpose of wastewater extraction. By extracting wastewater from different positions, the purpose of testing wastewater at different depths can be achieved, thereby improving the effect of wastewater testing, and wastewater at different depths can be extracted at one time without having to be separated multiple times, thereby improving the efficiency of wastewater extraction.

[0018] The wastewater extraction equipment for environmental testing can pull the baffle by the handle, and the limit plate will be separated from the limit groove opened inside the positioning plate, so that the baffle can be taken out. By utilizing external equipment and plugging the pipe of the external equipment into the inside of the discharge pipe, the wastewater inside the placement box can be taken out, so as to facilitate its later testing.

[0019] The wastewater extraction equipment for environmental testing can achieve the purpose of moving the installation shell downward by slowly moving the rope downward under the rotation of the winding roller, so that the installation shell can be automatically placed inside the wastewater that needs to be tested. By using the rope, electric power replaces manual power, which saves time, effort and labor.

[0020] The wastewater extraction equipment for environmental testing provides a supporting force for the rope through the provided supporting rollers, thereby ensuring that the rope moves up and down automatically. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative labor: Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the extraction mechanism of the present invention; Figure 3 It is a schematic oblique view of the extraction mechanism of the present invention; Figure 4 It is a cross-sectional schematic diagram of the extraction mechanism of the present invention; Figure 5 It is a schematic diagram of the discharging mechanism of the present invention; Figure 6 It is a schematic diagram of the retractable mechanism of the present invention.

[0022] In the figure: 1. Extraction equipment body; 2. Extraction mechanism; 21. First motor; 22. Mounting shell; 23. Cylinder; 24. Rectangular plate; 25. Threaded rod; 26. Placement box; 27. Feed pipe; 28. Support member; 29. ​​Discharge pipe; 201. Fixed frame; 3. Discharge mechanism; 31. Fixed plate; 32. Limiting plate; 33. Baffle; 34. Limiting rod; 35. Handle; 36. Connecting plate; 37. Positioning plate; 4. Retracting and releasing mechanism; 41. Vertical plate; 42. Reeling roller; 43. Placement plate; 44. Limiting member; 45. Support roller; 46. Rope; 47. Mounting plate; 48. Second motor. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] The present invention provides a technical solution: Embodiment 1: Combination Figure 1 to Figure 2 -4, a wastewater extraction device for environmental testing, comprising an extraction device body 1, a retractable mechanism 4 is arranged on the top of the extraction device body 1, an extraction mechanism 2 is arranged at the bottom of the retractable mechanism 4, and a discharging mechanism 3 is arranged on the surface of the extraction mechanism 2.

[0025] The extraction mechanism 2 includes a mounting shell 22, which is arranged on the right side of the extraction device body 1. A threaded rod 25 is rotatably connected inside the mounting shell 22. The threaded rod 25 is arranged in the middle of the mounting shell 22. A first motor 21 is fixedly connected to the top of the threaded rod 25. A fixing bracket 201 is fixedly connected to the surface of the first motor 21. The fixing bracket 201 is fixedly connected to the top of the mounting shell 22. A placement box 26 is threadedly connected to the surface of the threaded rod 25.

[0026] Furthermore, three placement boxes 26 are arranged, and the three placement boxes 26 are evenly distributed in the installation shell 22. The three placement boxes 26 are evenly arranged, and the placement boxes 26 are rectangular in design. Through the arranged placement boxes 26, wastewater can be placed. Since the pressure inside the installation shell 22 is greater than the pressure outside, the wastewater will pass through the cylinder 23 and the feed pipe 27 into the interior of the placement box 26, thereby completing the purpose of extracting the wastewater. By extracting the wastewater at different positions, the purpose of detecting wastewater at different depths can be achieved, thereby improving the effect of wastewater detection, and wastewater at different depths can be extracted at one time without being separated multiple times, thereby improving the efficiency of wastewater extraction.

[0027] Furthermore, a discharge pipe 29 is fixedly connected to the front side of the placement box 26, and a feed pipe 27 is fixedly connected to both sides of the placement box 26. The discharge pipe 29 and the feed pipe 27 are both arranged in the installation shell 22. Through the arrangement of the discharge pipe 29 and the feed pipe 27, the function of wastewater in and out can be realized.

[0028] Furthermore, cylinders 23 are fixedly connected to both sides of the mounting shell 22. Six cylinders 23 are arranged, and three cylinders 23 are arranged on one side of the mounting shell 22. The cylinders 23 are evenly spaced and arranged to circulate wastewater.

[0029] Furthermore, a support member 28 is fixedly connected to the rear side of the shell, a slide groove is opened in the support member 28, a rectangular plate 24 is slidably connected in the slide groove, the rectangular plate 24 is fixedly connected to the rear surface of the placement box 26, and filter holes of uniform size are opened at the bottom of the installation shell 22. When the placement box 26 moves up and down, the rectangular plate 24 slides in the slide groove opened in the support member 28, which can ensure that the placement box 26 moves up and down.

[0030] Example 2: See Figure 5, and on the basis of the first embodiment, the extraction mechanism 2 further comprises a mounting shell 22, the mounting shell 22 is arranged on the right side of the extraction device body 1, a threaded rod 25 is rotatably connected in the mounting shell 22, the threaded rod 25 is arranged in the middle of the mounting shell 22, a first motor 21 is fixedly connected to the top of the threaded rod 25, a fixing frame 201 is fixedly connected to the surface of the first motor 21, the fixing frame 201 is fixedly connected to the top of the mounting shell 22, a placement box 26 is threadedly connected to the surface of the threaded rod 25, three placement boxes 26 are arranged, the three placement boxes 26 are evenly distributed in the mounting shell 22, the three placement boxes 26 are evenly arranged, the placement boxes 26 are rectangular in design, and wastewater can be placed by the arranged placement boxes 26, a discharge pipe 29 is fixedly connected to the front side of the placement box 26, and a feed pipe 27 is fixedly connected to both sides of the placement box 26, and the discharge pipe 29 is fixedly connected to the front side of the placement box 26. The material pipe 29 and the feed pipe 27 are both arranged in the installation shell 22. Through the arranged discharge pipe 29 and feed pipe 27, the function of wastewater in and out can be realized. Cylinders 23 are fixedly connected on both sides of the installation shell 22. The number of cylinders 23 is six, and the number of cylinders 23 on one side of the installation shell 22 is three. The cylinders 23 are evenly spaced. Through the arranged cylinders 23, the purpose of wastewater circulation is achieved. A support member 28 is fixedly connected to the rear side of the installation shell 22. A slide groove is opened in the support member 28. A rectangular plate 24 is slidably connected in the slide groove. The rectangular plate 24 is fixedly connected to the rear surface of the placement box 26. Uniformly sized filter holes are opened at the bottom of the installation shell 22. When the placement box 26 moves up and down, the rectangular plate 24 slides in the slide groove opened in the support member 28, which can ensure that the placement box 26 moves up and down.

[0031] Furthermore, the discharging mechanism 3 includes a mounting groove, which is provided on the front side of the mounting shell 22, in which a baffle 33 is inserted, a handle 35 is fixedly connected to the front surface of the baffle 33, connecting plates 36 are fixedly connected on both sides of the baffle 33, four connecting plates 36 are provided, and the four connecting plates 36 are of the same size. A limiting groove is provided in the connecting plate 36, in which a limiting rod 34 is inserted, and the limiting rod 34 is fixedly connected to the surface of the mounting shell 22, and the baffle 33 is provided to block wastewater.

[0032] Furthermore, a thread is provided on the surface of the limit rod 34, and a locking nut is threadedly connected to the surface of the limit rod 34. The locking nut is provided on the front side of the mounting shell 22. The locking nut is removed from the surface of the limit rod 34 by rotating the locking nut, and then the baffle 33 is pulled by the handle 35. At this time, the limit plate 32 is disengaged from the limit groove opened inside the positioning plate 37, so that the baffle 33 can be removed.

[0033] Furthermore, the top and bottom of the baffle 33 are fixedly connected to the fixing plates 31, the two sides of the fixing plates 31 are fixedly connected to the limiting plates 32, the front surface of the mounting shell 22 is fixedly connected to the positioning plate 37, the surface of the positioning plate 37 is provided with a limiting groove, the limiting plate 32 is inserted into the limiting groove, and the baffle 33 can be initially limited by the provided positioning plate 37 and the limiting plate 32.

[0034] Example 3: See Figure 6 , and on the basis of the first and second embodiments, the extraction mechanism 2 further comprises a mounting shell 22, the mounting shell 22 is arranged on the right side of the extraction device body 1, a threaded rod 25 is rotatably connected in the mounting shell 22, the threaded rod 25 is arranged in the middle of the mounting shell 22, a first motor 21 is fixedly connected to the top of the threaded rod 25, a fixing frame 201 is fixedly connected to the surface of the first motor 21, the fixing frame 201 is fixedly connected to the top of the mounting shell 22, a placement box 26 is threadedly connected to the surface of the threaded rod 25, and the number of placement boxes 26 is three, and the three placement boxes 26 are evenly distributed in the mounting shell 22, and the three placement boxes 26 are evenly arranged, and the placement boxes 26 are rectangular in design. The wastewater can be placed by the arranged placement boxes 26, and the front side of the placement box 26 is fixedly connected to the discharge pipe 29, and both sides of the placement box 26 are fixedly connected to the feed pipe 2 7. The discharge pipe 29 and the feed pipe 27 are both arranged in the installation shell 22. Through the set discharge pipe 29 and the feed pipe 27, the function of wastewater in and out can be realized. The installation shell 22 is fixedly connected with cylinders 23 on both sides. The number of cylinders 23 is six, and the number of cylinders 23 on one side of the installation shell 22 is three. The cylinders 23 are evenly spaced. Through the set cylinders 23, the purpose of wastewater circulation is achieved. A support member 28 is fixedly connected to the rear side of the installation shell 22. A slide groove is opened in the support member 28. A rectangular plate 24 is slidably connected in the slide groove. The rectangular plate 24 is fixedly connected to the rear surface of the placement box 26. The bottom of the installation shell 22 is provided with filter holes of uniform size. When the placement box 26 is moving up and down, the rectangular plate 24 slides in the slide groove opened in the support member 28, which can ensure that the placement box 26 moves up and down.

[0035] Furthermore, the discharging mechanism 3 includes a mounting groove, which is arranged on the front side of the mounting shell 22, and a baffle plate 33 is inserted in the mounting groove. A handle 35 is fixedly connected to the front surface of the baffle plate 33, and connecting plates 36 are fixedly connected on both sides of the baffle plate 33. Four connecting plates 36 are arranged, and the specifications of the four connecting plates 36 are consistent. A limiting groove is arranged in the connecting plate 36, and a limiting rod 34 is inserted in the limiting groove. The limiting rod 34 is fixedly connected to the surface of the mounting shell 22, and the baffle plate 33 is arranged to block waste water. The surface of the limiting rod 34 is provided with a thread, and a locking nut is threadedly connected to the surface of the limiting rod 34. The locking nut is provided with a thread. Place it on the front side of the mounting shell 22, remove the locking nut from the surface of the limit rod 34 by turning the locking nut, and then pull the baffle 33 through the handle 35. At this time, the limit plate 32 disengages from the limit groove opened inside the positioning plate 37, so that the baffle 33 can be removed. The top and bottom of the baffle 33 are fixedly connected to the fixing plate 31, and the two sides of the fixing plate 31 are fixedly connected to the limit plate 32. The front side surface of the mounting shell 22 is fixedly connected to the positioning plate 37, and the surface of the positioning plate 37 is provided with a limit groove. The limit plate 32 is inserted into the limit groove. The baffle 33 can be initially limited by the provided positioning plate 37 and the limit plate 32.

[0036] Furthermore, the retracting mechanism 4 includes vertical plates 41, which are fixedly connected to both sides of the top of the extraction equipment body 1. A winding roller 42 is rotatably connected between the two vertical plates 41, and a second motor 48 is fixedly connected to the front side of the winding roller 42. The second motor 48 is fixedly connected to the surface of the front vertical plate 41. The winding roller 42 is set to realize the up and down movement of the rope 46. Under the rotation of the winding roller 42, the rope 46 slowly moves downward, which can achieve the purpose of moving the mounting shell 22 downward, and can automatically place the mounting shell 22 inside the wastewater that needs to be tested. By using the rope 46, electric power replaces manual power, which saves time, effort and labor.

[0037] Furthermore, a rope 46 is wound around the surface of the winding roller 42, and the rope 46 is fixedly connected to the top of the mounting shell 22. A mounting plate 47 is fixedly connected to the right side of the extraction device body 1, and a placement plate 43 is fixedly connected inside the mounting plate 47. A support roller 45 is rotatably connected inside the mounting plate 47. The rope 46 is arranged on the surface of the support roller 45, and limiting members 44 are fixedly connected on both sides of the surface of the support plate. The rope 46 is arranged on one side of the limiting member 44. When the winding roller 42 rotates, the rope 46 slowly moves downward, which can achieve the purpose of moving the mounting shell 22 downward, and can automatically place the mounting shell 22 inside the wastewater that needs to be detected.

[0038] In actual operation, when this device is used, first, the extraction device body 1 is placed in the corresponding position, and the second motor 48 is started. The second motor 48 drives the winding roller 42 to rotate. Under the rotation of the winding roller 42, the rope 46 slowly moves downward, which can achieve the purpose of moving the installation shell 22 downward, and can automatically place the installation shell 22 inside the wastewater to be detected. By using the rope 46, electric power replaces manual power, which saves time, effort and labor. The support roller 45 is provided to support the rope 46, which can ensure that the rope 46 automatically moves up and down. When the installation shell 22 sinks into the water, the first motor 21 is started at this time, and the second motor can drive the placement box 26 inside the installation shell 22 to move downward. When the feeding pipes 27 on both sides of the placement box 26 and the cylinders 23 on both sides of the installation shell 22 are at the same horizontal plane, and at this time, because the pressure inside the installation shell 22 is greater than the external pressure, this When the wastewater is extracted from the storage box 26, the wastewater will pass through the cylinder 23 and the feed pipe 27 and enter the interior of the storage box 26, thereby completing the purpose of extracting the wastewater. By extracting the wastewater from different positions, the purpose of detecting the wastewater at different depths can be achieved, which improves the effect of wastewater detection, and the wastewater at different depths can be extracted at one time without being separated multiple times, thereby improving the efficiency of wastewater extraction. When it is necessary to take out the wastewater extracted from the storage box 26, the mounting shell 22 can be moved to separate the mounting shell 22 from the water surface, and then the locking nut is removed from the surface of the limit rod 34 by rotating the locking nut, and then the baffle 33 is pulled by the handle 35. At this time, the limit plate 32 is separated from the limit groove opened inside the positioning plate 37, so that the baffle 33 can be removed. By utilizing external equipment and plugging the pipe of the external equipment into the inside of the discharge pipe 29, the wastewater inside the storage box 26 can be removed, so as to facilitate its detection later.

[0039] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

Claims

1. A wastewater extraction device for environmental testing, comprising an extraction device body (1), characterized in that: The top of the extraction device body (1) is provided with a retracting mechanism (4), the bottom of the retracting mechanism (4) is provided with an extraction mechanism (2), and the surface of the extraction mechanism (2) is provided with a discharging mechanism (3); The extraction mechanism (2) comprises a mounting shell (22), the mounting shell (22) being arranged on the right side of the extraction device body (1), a threaded rod (25) being rotatably connected inside the mounting shell (22), the threaded rod (25) being arranged in the middle of the mounting shell (22), a first motor (21) being fixedly connected to the top of the threaded rod (25), a fixing frame (201) being fixedly connected to the surface of the first motor (21), the fixing frame (201) being fixedly connected to the top of the mounting shell (22), and a placement box (26) being threadedly connected to the surface of the threaded rod (25); The discharging mechanism (3) comprises a mounting groove, the mounting groove is arranged on the front side of the mounting shell (22), a baffle (33) is inserted in the mounting groove, a handle (35) is fixedly connected to the front surface of the baffle (33), connecting plates (36) are fixedly connected to both sides of the baffle (33), four connecting plates (36) are arranged, the four connecting plates (36) are of the same size, a limiting groove is arranged in the connecting plate (36), a limiting rod (34) is inserted in the limiting groove, and the limiting rod (34) is fixedly connected On the surface of the mounting shell (22), the surface of the limiting rod (34) is provided with a thread, the surface of the limiting rod (34) is threadedly connected to a locking nut, the locking nut is arranged on the front side of the mounting shell (22), the top and bottom of the baffle (33) are fixedly connected to a fixing plate (31), both sides of the fixing plate (31) are fixedly connected to the limiting plate (32), the front side surface of the mounting shell (22) is fixedly connected to a positioning plate (37), the surface of the positioning plate (37) is provided with a limiting groove, and the limiting plate (32) is inserted into the limiting groove; The retracting and releasing mechanism (4) comprises a vertical plate (41), the vertical plates (41) are fixedly connected to both sides of the top of the extraction device body (1), a reeling roller (42) is rotatably connected between the two vertical plates (41), a second motor (48) is fixedly connected to the front side of the reeling roller (42), the second motor (48) is fixedly connected to the surface of the front vertical plate (41), a rope (46) is wound around the surface of the reeling roller (42), the rope (46) is fixedly connected to the top of the mounting shell (22), a mounting plate (47) is fixedly connected to the right side of the extraction device body (1), a placement plate (43) is fixedly connected inside the mounting plate (47), a support roller (45) is rotatably connected inside the mounting plate (47), the rope (46) is arranged on the surface of the support roller (45), both sides of the surface of the support plate are fixedly connected to limiting members (44), the rope (46) is arranged on one side of the limiting member (44).

2. The wastewater extraction equipment for environmental testing according to claim 1, characterized in that: The number of the placement boxes (26) is three, the three placement boxes (26) are distributed in the installation shell (22) at equal intervals, the three placement boxes (26) are evenly arranged, and the placement boxes (26) are designed to be rectangular.

3. The wastewater extraction equipment for environmental testing according to claim 1, characterized in that: A discharge pipe (29) is fixedly connected to the front side of the placement box (26), and a feed pipe (27) is fixedly connected to both sides of the placement box (26). The discharge pipe (29) and the feed pipe (27) are both arranged in the installation shell (22).

4. The wastewater extraction equipment for environmental testing according to claim 1, characterized in that: Both sides of the installation shell (22) are fixedly connected with cylinders (23), the number of the cylinders (23) is six, the number of the cylinders (23) on one side of the installation shell (22) is three, and the cylinders (23) are distributed at equal intervals.

5. The wastewater extraction equipment for environmental testing according to claim 1, characterized in that: A support member (28) is fixedly connected to the rear side of the mounting shell (22), a slide groove is provided in the support member (28), a rectangular plate (24) is slidably connected in the slide groove, the rectangular plate (24) is fixedly connected to the rear side surface of the placement box (26), and filter holes of uniform size are provided at the bottom of the mounting shell (22).

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