A pretreatment system and data analysis method for a water quality VOC online analyzer

Abstract

The present invention discloses a pretreatment system and data analysis method of a water quality VOC online analyzer, including an analyzer housing and a protective cover embedded in the inner wall of the analyzer housing, a detection head is arranged inside the analyzer housing, a processor is fixed inside the analyzer housing, and a battery is also fixed inside the analyzer housing. The present invention relates to the field of water quality detection technology. The pretreatment system and data analysis method of the water quality VOC online analyzer, through the setting of an air pressure locking mechanism, is convenient for positioning the protective cover using the air pressure driving principle, and is also convenient for later disassembly, which can effectively save time and facilitate rapid maintenance of the internal components of the analyzer housing. By strengthening the setting of the sealing mechanism, it is convenient to strengthen the sealing between the analyzer housing and the protective cover, effectively preventing moisture from entering the analyzer housing through the gap between the analyzer housing and the protective cover, and thus effectively waterproofing the internal components of the analyzer housing.

Description

Technical Field

[0001] The present invention relates to the technical field of water quality detection, and in particular to a preprocessing system and a data analysis method of a water quality VOC online analyzer. Background Art

[0002] Water is the source of life. Human beings cannot live without water in their lives and production activities. The quality of drinking water is closely related to human health. With the development of social economy, scientific progress and the improvement of people's living standards, people's requirements for the quality of drinking water are constantly increasing, and the drinking water quality standards are also constantly developing and improving accordingly. Since the formulation of drinking water quality standards is related to many factors such as people's living habits, culture, economic conditions, scientific and technological development level, water resources and water quality status, there are differences in the requirements for drinking water quality not only between countries, but also between different regions in the same country. VOC is the abbreviation of volatile organic compounds. In the ordinary sense, VOC refers to volatile organic compounds; but the definition in the environmental sense refers to a class of active volatile organic compounds, that is, the type of volatile organic compounds that can cause harm.

[0003] Nowadays, when water quality needs to be tested, an analytical detector is needed. The existing analytical detectors have the following problems when used:

[0004] (1) The internal components are generally installed inside the housing and are generally protected by installing a protective cover on the outside. However, the protective cover is generally installed with bolts, which makes it very inconvenient to disassemble when inspecting the internal components. In addition, the seal between the protective cover and the housing cannot be well guaranteed after installation, which makes the internal components prone to water seepage, thus affecting their service life;

[0005] (2) Some detector heads are directly arranged outside the housing, which cannot effectively protect the detector head when not in use, and it is not convenient to freely extend and retract the detector head.

[0006] Therefore, the present invention proposes a pretreatment system and data analysis method for a water quality VOC online analyzer to solve the above-mentioned problems. Summary of the invention

[0007] In view of the deficiencies in the prior art, the present invention provides a pretreatment system and a data analysis method for a water quality VOC online analyzer, which solves the problem that the internal components are generally installed inside the outer casing and are generally protected by installing a protective cover on the outside, but the protective cover is generally installed with bolts, which is very inconvenient to disassemble when inspecting the internal components, and the sealing between the protective cover and the shell cannot be well guaranteed after installation, which makes the internal components prone to water seepage, thereby affecting their service life; some detection heads are directly arranged on the outside of the outer casing, and when not in use, they cannot be effectively protected, and it is not convenient to freely extend and retract the detection head.

[0008] To achieve the above objectives, the present invention is implemented through the following technical solutions: a pretreatment system for a water quality VOC online analyzer, comprising an analyzer housing and a protective cover embedded in the inner wall of the analyzer housing, a detection head is arranged inside the analyzer housing, a processor is fixed inside the analyzer housing, a battery is also fixed inside the analyzer housing, a display is embedded and fixed on the top of the protective cover, a pneumatic locking mechanism is arranged between the analyzer housing and the protective cover, the detection head is movably connected to the inside of the analyzer housing through a pushing mechanism, a through groove adapted to the detection head is opened through the front of the analyzer housing, and a protective sealing mechanism is arranged at the front of the analyzer housing;

[0009] The pneumatic locking mechanism includes a lateral symmetrical tube connected to both sides of the analyzer housing, a main piston cylinder is fixed to the bottom of the analyzer housing, the surfaces of the two lateral symmetrical tubes are connected by a U-shaped tube, the main piston cylinder and the U-shaped tube are connected by a conduit, sealing sheets are slid on both sides of the inner wall of the lateral symmetrical tube, and plug rods are fixed on the sides of the two sealing sheets, and the sides of the protective cover are provided with a plug hole adapted to the plug rod, the inner wall of the lateral symmetrical tube and the two sides of the sealing sheet are fixed with stoppers, the inner wall of the main piston cylinder is slid with a main piston sheet, and a limiting block is fixed on the inner wall of the main piston cylinder, a round block is fixed to one end of the main piston cylinder through a support rod, a screw rod is threaded through the round block, one end of the screw rod is rotatably connected to the front of the main piston sheet, a disc is fixed to the other end of the screw rod, and a reinforced sealing mechanism is provided on the main piston sheet;

[0010] The reinforced sealing mechanism includes a folding rod fixed in front of the main piston plate, a secondary piston cylinder is fixed to the bottom of the analyzer housing, a hollow sealing gasket is fixed to the outer periphery of the protective cover, the outer periphery of the hollow sealing gasket is in contact with the inner wall of the analyzer housing, a hose is connected to the surface of the hollow sealing gasket, one end of the hose is connected to the rear of the secondary piston cylinder, and a secondary piston plate is slidably installed on the inner wall of the secondary piston cylinder.

[0011] Preferably, the ejection mechanism includes a screw rod rotatably connected to the inner wall of the analyzer housing, one end of the screw rod penetrates the analyzer housing and extends to the outside of the analyzer housing, and an adjustment disk is fixed to one end of the screw rod.

[0012] Preferably, a movable seat is threadedly connected to the surface of the screw rod, the detection head is fixed in front of the movable seat, a limit rod is fixed between two sides of the inner wall of the analyzer housing, and the movable seat is slidably mounted on the surface of the limit rod.

[0013] Preferably, the protective sealing mechanism comprises a sealing cover hinged at the front of the analyzer housing, and the sealing cover is arranged in front of the through slot.

[0014] Preferably, a tension spring is fixed to the rear of the sealing cover, one end of the tension spring is fixedly connected to the inside of the analyzer housing, and a first hollow sealing frame is fixed to the inner wall of the through groove.

[0015] Preferably, a second hollow sealing frame used in conjunction with the first hollow sealing frame is fixed to the rear of the sealing cover, a first magnetic sheet is fixed to the inner wall of the first hollow sealing frame, a second magnetic sheet used in conjunction with the first magnetic sheet is fixed to the inner wall of the second hollow sealing frame, and the side of the first magnetic sheet and the second magnetic sheet close to each other are opposite magnetic poles.

[0016] Preferably, buffer blocks are fixed at the four corners of the analyzer housing, and anti-slip grip blocks are fixed on both sides of the analyzer housing.

[0017] Preferably, four corners of the bottom of the analyzer housing are fixed with supporting feet, and the bottom ends of the four supporting feet are fixed with buffer suction cups.

[0018] The present invention also discloses a data analysis method for a pretreatment system of a water quality VOC online analyzer, which specifically comprises the following steps:

[0019] S1. Before testing, turn the adjustment disk to drive the screw to rotate, thereby driving the moving seat to slide forward along the limit rod, and then the sealing cover is pushed open by the detection head, and then the detection head is exposed outside the analyzer housing;

[0020] S2. Put the detection head into the water and then perform water quality detection. The water quality detection data is transmitted to the processor through the detection head. After the processor processes the information, it is transmitted to the display, and the real-time information is displayed through the display.

[0021] Preferably, the screw in step S1 is rotatably mounted on the housing of the analyzer.

[0022] Beneficial Effects

[0023] The present invention provides a pretreatment system and data analysis method for a water quality VOC online analyzer. Compared with the prior art, it has the following beneficial effects:

[0024] (1) The pretreatment system and data analysis method of the water quality VOC online analyzer include a pneumatic locking mechanism including a lateral symmetrical tube connected to both sides of the analyzer housing, a main piston cylinder is fixed at the bottom of the analyzer housing, the surfaces of the two lateral symmetrical tubes are connected by a U-shaped tube, the main piston cylinder and the U-shaped tube are connected by a conduit, sealing plates are slid on both sides of the inner wall of the lateral symmetrical tube, plug rods are fixed on the sides of the two sealing plates, a plug hole matched with the plug rod is opened on the side of the protective cover, stoppers are fixed on the inner wall of the lateral symmetrical tube and on both sides of the sealing plate, a main piston plate is slid on the inner wall of the main piston cylinder, and a limit block is fixed on the inner wall of the main piston cylinder. The pneumatic locking mechanism is set up to facilitate the positioning of the protective cover by using the pneumatic driving principle, and the later disassembly is also relatively convenient, which can effectively save time and facilitate the rapid maintenance of the internal components of the analyzer housing.

[0025] (2) The pretreatment system and data analysis method of the water quality VOC online analyzer include a folding rod fixed in front of the main piston plate in the enhanced sealing mechanism, a secondary piston cylinder is fixed to the bottom of the analyzer housing, a hollow sealing gasket is fixed to the outer periphery of the protective cover, the outer periphery of the hollow sealing gasket is in contact with the inner wall of the analyzer housing, and a hose is connected to the surface of the hollow sealing gasket, one end of the hose is connected to the rear of the secondary piston cylinder. By setting the enhanced sealing mechanism, it is convenient to enhance the sealing between the analyzer housing and the protective cover, effectively prevent moisture from entering the analyzer housing through the gap between the analyzer housing and the protective cover, and thus effectively provide waterproof protection for the internal components of the analyzer housing.

[0026] (3) The pretreatment system and data analysis method of the water quality VOC online analyzer include a push-out mechanism that includes a screw that is rotatably connected to the inner wall of the analyzer housing, one end of the screw penetrates the analyzer housing and extends to the outside of the analyzer housing, and an adjustment disk is fixed to one end of the screw. The push-out mechanism allows the detection head to be freely extended and retracted, and the detection head can be effectively protected when not in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a stereoscopic diagram of the first viewing angle structure of the present invention;

[0028] Figure 2 is a stereoscopic diagram of the second viewing angle structure of the present invention;

[0029] Figure 3 A schematic diagram of the internal structure of the analyzer housing of the present invention;

[0030] Figure 4 A schematic diagram of the external structure of the protective cover of the present invention;

[0031] Figure 5 It is a three-dimensional diagram of the local structure of the present invention;

[0032] Figure 6 A three-dimensional diagram of the internal structure of the main piston cylinder of the present invention;

[0033] Figure 7 It is a three-dimensional cross-sectional view of the side-symmetrical tube structure of the present invention;

[0034] Figure 8 For the present invention Figure 3 A partial enlarged view of the middle A;

[0035] Fig. 9 For the present invention Figure 7 A partial enlarged view of point B in the middle;

[0036] Fig.10 It is a side sectional view of the first hollow sealing frame and the second hollow sealing frame structure of the present invention.

[0037] In the figure: 1-analyzer housing, 2-protective cover, 3-detection head, 4-processor, 5-battery, 6-display, 7-gas pressure locking mechanism, 71-lateral symmetrical tube, 72-main piston cylinder, 73-U-shaped tube, 74-conduit, 75-sealing plate, 76-insertion rod, 77-insertion hole, 78-stopper, 79-main piston plate, 710-limiting block, 711-support rod, 712-round block, 713-screw, 714-disc, 715-reinforced sealing mechanism, 7151-folding rod, 7152 - auxiliary piston cylinder, 7153 - hollow sealing pad, 7154 - hose, 7155 - auxiliary piston plate, 8 - ejection mechanism, 81 - screw rod, 82 - adjusting disk, 83 - moving seat, 84 - limiting rod, 9 - through groove, 10 - protective sealing mechanism, 101 - sealing cover, 102 - tensioning spring, 103 - first hollow sealing frame, 104 - second hollow sealing frame, 105 - first magnetic sheet, 106 - second magnetic sheet, 11 - buffer block, 12 - anti-slip grip block, 13 - support foot, 14 - buffer suction cup. DETAILED DESCRIPTION

[0038] 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.

[0039] See also Figure 1-10The present invention provides a technical solution: a pretreatment system of a water quality VOC online analyzer, comprising an analyzer housing 1 and a protective cover 2 embedded in the inner wall of the analyzer housing 1, a detection head 3 is arranged inside the analyzer housing 1 for detecting the content of volatile organic compounds in water, a processor 4 is fixed inside the analyzer housing 1 for data processing, a storage battery 5 is also fixed inside the analyzer housing 1 for providing power to various components, a display 6 is embedded and fixed on the top of the protective cover 2, a pneumatic locking mechanism 7 is arranged between the analyzer housing 1 and the protective cover 2, the detection head 3 is movably connected to the inside of the analyzer housing 1 through a pushing mechanism 8, a through slot 9 adapted to the detection head 3 is opened through the front of the analyzer housing 1, and a protective sealing mechanism 10 is arranged in front of the analyzer housing 1;

[0040] The gas pressure locking mechanism 7 includes a lateral symmetrical tube 71 connected to both sides of the analyzer housing 1, a main piston cylinder 72 is fixed to the bottom of the analyzer housing 1, the surfaces of the two lateral symmetrical tubes 71 are connected through a U-shaped tube 73, the main piston cylinder 72 and the U-shaped tube 73 are connected through a conduit 74, sealing sheets 75 are slid on both sides of the inner wall of the lateral symmetrical tube 71, and the sealing performance between the lateral symmetrical tube 71 is good, and the sides of the two sealing sheets 75 are fixed with plug rods 76, and the side of the protective cover 2 is provided with a socket 77 adapted to the plug rod 76. The inner wall of the lateral symmetrical tube 71 and located at Blocks 78 are fixed on both sides of the sealing sheet 75 for blocking the sealing sheet 75. A main piston sheet 79 is slidably provided on the inner wall of the main piston cylinder 72. A limiting block 710 is fixed on the inner wall of the main piston cylinder 72 for blocking the main piston sheet 79. A round block 712 is fixed to one end of the main piston cylinder 72 through a support rod 711. A screw rod 713 is threadedly passed through the round block 712. One end of the screw rod 713 is rotatably connected to the front of the main piston sheet 79. A disc 714 is fixed to the other end of the screw rod 713. A reinforcing sealing mechanism 715 is provided on the main piston sheet 79.

[0041] The enhanced sealing mechanism 715 includes a folding rod 7151 fixed in front of the main piston plate 79, a secondary piston cylinder 7152 is fixed to the bottom of the analyzer housing 1, and a hollow sealing gasket 7153 is fixed to the outer periphery of the protective cover 2. The hollow sealing gasket 7153 will expand after being inflated, and can then be in close contact with the inner wall of the analyzer housing 1. The outer periphery of the hollow sealing gasket 7153 is in contact with the inner wall of the analyzer housing 1, and the surface of the hollow sealing gasket 7153 is connected to a hose 7154, one end of the hose 7154 is connected to the rear of the secondary piston cylinder 7152, and the inner wall of the secondary piston cylinder 7152 is slidably mounted with a secondary piston plate 7155.

[0042] In an embodiment of the present invention, the ejection mechanism 8 includes a screw rod 81 rotatably connected to the inner wall of the analyzer housing 1, one end of the screw rod 81 passes through the analyzer housing 1 and extends to the outside of the analyzer housing 1, an adjustment disk 82 is fixed to one end of the screw rod 81, a movable seat 83 is threadedly connected to the surface of the screw rod 81, the detection head 3 is fixed in front of the movable seat 83, a limit rod 84 is fixed between the two sides of the inner wall of the analyzer housing 1, and the movable seat 83 is slidably installed on the surface of the limit rod 84.

[0043] In the embodiment of the present invention, the protective sealing mechanism 10 includes a sealing cover 101 hinged on the front of the analyzer housing 1, the sealing cover 101 is arranged in front of the through slot 9, and a tension spring 102 is fixed to the rear of the sealing cover 101, so that the sealing cover 101 can be quickly reset, one end of the tension spring 102 is fixedly connected to the inside of the analyzer housing 1, a first hollow sealing frame 103 is fixed to the inner wall of the through slot 9, and a second hollow sealing frame 103 used in conjunction with the first hollow sealing frame 103 is fixed to the rear of the sealing cover 101. The sealing frame 104, the first hollow sealing frame 103 is fixed with a first magnetic sheet 105 on its inner wall, the second hollow sealing frame 104 is fixed with a second magnetic sheet 106 used in conjunction with the first magnetic sheet 105 on its inner wall, the first magnetic sheet 105 and the second magnetic sheet 106 are close to each other on one side with opposite magnetic poles, and the first magnetic sheet 105 and the second magnetic sheet 106 can be pressed against each other through the attraction between the opposite magnetic poles, thereby making the first hollow sealing frame 103 and the second hollow sealing frame 104 fit tightly to achieve sealing and waterproofing.

[0044] In the embodiment of the present invention, buffer blocks 11 are fixed at the four corners of the analyzer housing 1 to provide buffering protection for the analyzer housing 1 , and anti-slip grip blocks 12 are fixed on both sides of the analyzer housing 1 to facilitate hand-held operation.

[0045] In the embodiment of the present invention, four corners of the bottom of the analyzer housing 1 are fixed with supporting feet 13 , and the bottom ends of the four supporting feet 13 are fixed with buffer suction cups 14 , so as to facilitate fixing the entire device through the buffer suction cups 14 .

[0046] The present invention also discloses a data analysis method for a pretreatment system of a water quality VOC online analyzer, which specifically comprises the following steps:

[0047] S1. Before testing, the adjusting disk 82 is rotated to drive the screw 81 to rotate, thereby driving the moving seat 83 to slide forward along the limit rod 84, and then the sealing cover 101 is pushed open by the detection head 3, and then the detection head 3 is exposed outside the analyzer housing 1;

[0048] S2. Put the detection head 3 into water and then perform water quality detection. The water quality detection data is transmitted to the processor 4 through the detection head 3. After the processor 4 processes the information, it is transmitted to the display 6, and the real-time information is displayed through the display 6.

[0049] In the embodiment of the present invention, the screw rod 81 in step S1 is rotatably mounted on the analyzer housing 1 .

[0050] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0051] When in use, before conducting a test, rotate the adjusting disk 82, thereby driving the screw rod 81 to rotate, thereby driving the moving seat 83 to slide forward along the limit rod 84, and then the sealing cover 101 is pushed open by the detection head 3, and then the detection head 3 is exposed to the outside of the analyzer housing 1, and the detection head 3 is placed in the water, and then the water quality test is carried out. The water quality test data is transmitted to the processor 4 through the detection head 3, and the information is processed by the processor 4 and then transmitted to the display 6, and the real-time information is displayed through the display 6. After the test is completed, the adjusting disk 82 is rotated in the opposite direction, thereby driving the screw rod 81 to rotate in the opposite direction, so that the detection head 3 can be retracted to the inside of the analyzer housing 1, and then under the tension of the tension spring 102, the sealing cover 101 can be quickly reset, and under the gravitational force of the first magnetic sheet 105 and the second magnetic sheet 106, the first hollow sealing frame 103 and the second hollow sealing frame 104 can fit tightly to achieve sealing and waterproofing, and the protective cover needs to be When disassembling the cover 2, the disc 714 is rotated, thereby driving the screw rod 713 to rotate and move along the front of the round block 712, thereby driving the main piston plate 79 to move forward. Under the action of air pressure, the sealing plates 75 inside the symmetrical tubes 71 on both sides are driven to slide away from each other, thereby making the four plug rods 76 disengage from the four insertion holes 77 respectively, and the auxiliary piston plate 7155 moves forward at the same time, making the hollow sealing gasket 7153 shrink, and then the protective cover 2 can be easily taken out. When the protective cover 2 needs to be reinstalled, the protective cover 2 is placed in the analyzer housing 1, and then the disc 714 is rotated in the opposite direction, thereby driving the main piston plate 79 to move backward. Under the action of air pressure, the sealing plates 75 inside the symmetrical tubes 71 on both sides are driven to slide close to each other, thereby making the four plug rods 76 respectively insert into the four insertion holes 77, thereby completing the positioning of the protective cover 2, and at the same time the auxiliary piston plate 7155 moves backward, making the hollow sealing gasket 7153 expand and close to the inner wall of the analyzer housing 1 to achieve sealing.

[0052] 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.

[0053] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pretreatment system for a water quality VOC online analyzer, comprising an analyzer housing (1) and a protective cover (2) embedded in the inner wall of the analyzer housing (1), characterized in that: A detection head (3) is arranged inside the analyzer housing (1), a processor (4) is fixed inside the analyzer housing (1), a storage battery (5) is also fixed inside the analyzer housing (1), a display (6) is embedded and fixed on the top of the protective cover (2), a gas pressure locking mechanism (7) is arranged between the analyzer housing (1) and the protective cover (2), the detection head (3) is movably connected to the inside of the analyzer housing (1) through a pushing mechanism (8), a through slot (9) adapted to the detection head (3) is penetrated through the front of the analyzer housing (1), and a protective sealing mechanism (10) is arranged at the front of the analyzer housing (1); The pneumatic locking mechanism (7) comprises a lateral symmetrical tube (71) connected to both sides of the analyzer housing (1); a main piston cylinder (72) is fixed to the bottom of the analyzer housing (1); the surfaces of the two lateral symmetrical tubes (71) are connected via a U-shaped tube (73); the main piston cylinder (72) and the U-shaped tube (73) are connected via a conduit (74); sealing sheets (75) are slidably provided on both sides of the inner wall of the lateral symmetrical tube (71); a plug rod (76) is fixed to the side of the two sealing sheets (75); a plug hole (77) adapted to the plug rod (76) is provided on the side of the protective cover (2); the lateral symmetrical tube (71) is provided with a lateral symmetrical tube (71); 1) and are fixed with stoppers (78) on both sides of the sealing plate (75); a main piston plate (79) is slidably mounted on the inner wall of the main piston cylinder (72); a limit block (710) is fixed on the inner wall of the main piston cylinder (72); a round block (712) is fixed to one end of the main piston cylinder (72) through a support rod (711); a screw rod (713) is threadedly penetrated on the round block (712); one end of the screw rod (713) is rotatably connected to the front of the main piston plate (79); a disc (714) is fixed to the other end of the screw rod (713); and a reinforced sealing mechanism (715) is provided on the main piston plate (79); The reinforced sealing mechanism (715) includes a folding rod (7151) fixed in front of the main piston plate (79), a secondary piston cylinder (7152) is fixed to the bottom of the analyzer housing (1), a hollow sealing gasket (7153) is fixed to the outer periphery of the protective cover (2), the outer periphery of the hollow sealing gasket (7153) is in contact with the inner wall of the analyzer housing (1), the surface of the hollow sealing gasket (7153) is connected to a hose (7154), one end of the hose (7154) is connected to the rear of the secondary piston cylinder (7152), and the inner wall of the secondary piston cylinder (7152) is slidably mounted with a secondary piston plate (7155).

2. The pretreatment system of a water quality VOC online analyzer according to claim 1, characterized in that: The ejection mechanism (8) comprises a screw rod (81) rotatably connected to the inner wall of the analyzer housing (1), one end of the screw rod (81) passes through the analyzer housing (1) and extends to the outside of the analyzer housing (1), and an adjustment disk (82) is fixed to one end of the screw rod (81).

3. The pretreatment system of a water quality VOC online analyzer according to claim 2, characterized in that: The surface of the screw rod (81) is threadedly connected with a movable seat (83), the detection head (3) is fixed in front of the movable seat (83), a limit rod (84) is fixed between two sides of the inner wall of the analyzer housing (1), and the movable seat (83) is slidably mounted on the surface of the limit rod (84).

4. The pretreatment system of a water quality VOC online analyzer according to claim 3 is characterized in that: The protective sealing mechanism (10) comprises a sealing cover (101) hinged at the front of the analyzer housing (1), and the sealing cover (101) is arranged in front of the through slot (9).

5. The pretreatment system of the water quality VOC online analyzer according to claim 4 is characterized in that: A tension spring (102) is fixed behind the sealing cover (101), one end of the tension spring (102) is fixedly connected to the inside of the analyzer housing (1), and a first hollow sealing frame (103) is fixed to the inner wall of the through groove (9).

6. The pretreatment system of the water quality VOC online analyzer according to claim 5, characterized in that: A second hollow sealing frame (104) for use in conjunction with the first hollow sealing frame (103) is fixed to the rear of the sealing cover (101); a first magnetic sheet (105) is fixed to the inner wall of the first hollow sealing frame (103); a second magnetic sheet (106) for use in conjunction with the first magnetic sheet (105) is fixed to the inner wall of the second hollow sealing frame (104); and the sides of the first magnetic sheet (105) and the second magnetic sheet (106) that are close to each other have opposite magnetic poles.

7. The pretreatment system of the water quality VOC online analyzer according to claim 6, characterized in that: Buffer blocks (11) are fixed at the four corners of the analyzer housing (1), and anti-slip grip blocks (12) are fixed on both sides of the analyzer housing (1).

8. The pretreatment system of the water quality VOC online analyzer according to claim 7, characterized in that: Support legs (13) are fixed at the four corners of the bottom of the analyzer housing (1), and buffer suction cups (14) are fixed at the bottom ends of the four support legs (13).

9. A data analysis method for implementing the pretreatment system of the water quality VOC online analyzer according to claim 8, characterized in that: The specific steps include: S1. Before testing, the adjusting disk (82) is rotated, thereby driving the screw (81) to rotate, thereby driving the moving seat (83) to slide forward along the limit rod (84), and then the sealing cover (101) is pushed open by the testing head (3), and then the testing head (3) is exposed outside the analyzer housing (1); S2, placing the detection head (3) into water, and then performing a water quality test. The water quality test data is transmitted to the processor (4) through the detection head (3), and the processor (4) processes the information and transmits it to the display (6), and the display (6) displays the real-time information.

10. The data analysis method of the pretreatment system of the water quality VOC online analyzer according to claim 9, characterized in that: The screw (81) in step S1 is rotatably mounted on the analyzer housing (1).

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