Online low-turbidity analysis system

Abstract

The utility model relates to the technical field of water turbidity analysis, in particular to an online low-turbidity analysis system. According to the technical scheme, the turbidity analyzer comprises a turbidity analyzer upper cover, a turbidity analyzer probe connected with the bottom of the turbidity analyzer upper cover in a clamped mode and a turbidity analyzer flow cell containing the turbidity analyzer probe, and a water inlet pipe is installed at the bottom of one side of the turbidity analyzer flow cell; the turbidity analyzer flow cell is internally provided with a defoaming mechanism I communicated with the water inlet pipe, the bottom of the turbidity analyzer flow cell is provided with a defoaming mechanism II communicated with the defoaming mechanism I, and a water inlet hole is formed between the defoaming mechanism II and the bottom of the turbidity analyzer flow cell. According to the utility model, two-time elimination of bubbles in water is realized, air bubbles entrained in a sample flow can be removed, and the turbidity analyzer is not influenced by the flow velocity and pressure change of the sample, so that the most important interference factors of a low-range turbidity meter in measurement are eliminated, and the turbidity analysis precision is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of water quality turbidity analysis, in particular to an online low turbidity analysis system. Background Art

[0002] The turbidity analyzer has a built-in microprocessor, advanced configuration, and powerful functions. It is a very precise turbidity measuring instrument. It is based on the principle that an 880nm infrared light source passes through an optical lens and penetrates the sample liquid, and measures scattered light in a 90° direction according to the ISO7027 standard. This turbidity analyzer can be used on filtration devices in different places to measure the turbidity of raw water or purified water, such as drinking water, various production and industrial water, and any place where qualified water is required.

[0003] MTU high-precision turbidity meter strictly follows ISO7027 standard and uses 90° scattered light principle for measurement. The light emitted from the sensor light source assembly is focused and enters the turbidity meter downward. It encounters the suspended particles in the sample to generate scattered light. The photoelectric detector can detect the scattered light at 90° to the incident light beam. The value of the scattered light is proportional to the turbidity of the sample being measured.

[0004] During the detection process of the turbidity analyzer probe, bubbles mixed in the water affect the analysis results. Although the existing turbidity meter sensor light source assembly is designed with a bubble removal device, the device can remove bubbles entrained in the sample flow, but the bubble treatment effect in the water is poor, and the detection accuracy is low. Therefore, the present application proposes an online low turbidity analysis system. Summary of the invention

[0005] The utility model aims to propose an online low turbidity analysis system in view of the problem that the existing turbidity analyzer in the background technology has a poor effect on treating bubbles in water by using a photoelectric 90-degree scattering method.

[0006] The technical solution of the utility model: an online low turbidity analysis system, comprising a turbidity analyzer upper cover, a turbidity analyzer probe snap-connected to the bottom of the turbidity analyzer upper cover, a turbidity analyzer flow cell accommodating the turbidity analyzer probe, a water inlet pipe installed at the bottom of one side of the turbidity analyzer flow cell, and further comprising:

[0007] A defoaming mechanism 1 connected to a water inlet pipe is arranged in the circulation pool of the turbidity analyzer, a defoaming mechanism 2 connected to the defoaming mechanism 1 is installed at the bottom of the circulation pool of the turbidity analyzer, and a water inlet hole is opened between the defoaming mechanism 2 and the bottom of the circulation pool of the turbidity analyzer.

[0008] Optionally, the defoaming mechanism 1 includes an arc-shaped groove opened on the upper end surface of the turbidity analyzer circulation pool, the top of the water inlet pipe extends into the arc-shaped groove, and a defoaming grille is installed in the arc-shaped groove. The turbidity analyzer circulation pool includes a tank body 1, a tank body 2 and a tank body 3 connected in sequence from top to bottom, the tank body 1, the tank body 2 and the tank body 3 are connected in sequence and arranged in a stepped shape, the volumes of the tank body 1, the tank body 2 and the tank body 3 decrease in sequence from top to bottom, the water inlet pipe is installed at the bottom of the tank body 1, and the top of the turbidity analyzer circulation pool is snap-connected with a breathable cover located above the defoaming grille, and the breathable cover is provided with a gap notch located at the top of the arc-shaped groove.

[0009] Optionally, the defoaming mechanism two includes a guide groove opened on one side of the turbidity analyzer circulation pool, the guide groove is connected to the end of the arc groove away from the water inlet pipe, the bottom of the guide groove is connected to a defoaming groove connected to the guide groove, the defoaming groove is fixed on one side of the tank body three, the water inlet hole is opened between the bottom of the side of the tank body three and the defoaming groove, and the bottom of the tank body two is provided with a bubble discharge hole located directly above the defoaming groove.

[0010] Optionally, a partition plate is fixedly installed inside the second trough body, and the partition plate divides the second trough body into a water storage trough and an overflow trough. The top of the partition plate is flush with the top of the second trough body, and a water flow trough is opened at the top corner of the partition plate. The bottom of the overflow trough is fixedly connected to an overflow pipe that is connected to the inside of the overflow trough.

[0011] Optionally, a baffle is fixed in the overflow trough, the top of the baffle is higher than the top of the water flow trough, a safety port is opened at the bottom of the overflow trough, the overflow pipe and the safety port are respectively located on both sides of the baffle, and a sponge block for blocking dust is installed on the top of the safety port.

[0012] Optionally, a cleaning hole is opened at the bottom of the defoaming tank, and a sealing plate for sealing the cleaning hole is installed at the bottom of the defoaming tank by screws, and a drain pipe is installed on the sealing plate.

[0013] Optionally, the turbidity analyzer probe includes a right-angle groove opened at the bottom of the turbidity analyzer probe, an LED light emitting hole on the top inner wall of the right-angle groove, a detection port for detecting the emitted light is developed on the inner wall of one side of the right-angle groove, glass sheets are installed on the LED light emitting hole and the detection port, a motor is installed in the turbidity analyzer probe, a brush for cleaning the glass sheet is rotatably installed at the bottom of the right-angle groove, the output shaft of the motor is transmission-connected to the brush, and the brush is in contact with the glass sheet.

[0014] Optionally, the detection port is arranged in a circular structure, and a semicircular shielding plate is fixedly mounted on the top inner wall of the detection port.

[0015] Optionally, a bevel is provided between the bottom inner wall and the side inner wall of the trough body 3, the bevel is located directly below the LED light emitting hole, and a light absorbing plate for absorbing stray light is installed on the bevel, and the light absorbing plate is a black acrylic plate.

[0016] Compared with the prior art, the utility model has the following beneficial technical effects:

[0017] In the utility model, water enters the arc-shaped groove from the water inlet pipe, passes through the debubbling grid for debubbling, and the removed bubbles escape through the gap gap provided between the air permeable cover and the top of the arc-shaped groove, thereby realizing the first debubbling of the sample water flow and improving the accuracy of turbidity analysis;

[0018] Furthermore, the sample water flows into the debubbling tank and the bubbles are discharged through the bubble discharge hole. The water flows into the tank body three through the water inlet hole, and then the water level continues to rise to provide turbidity analysis for the turbidity analyzer probe, thereby achieving debubbling of the water flow again, effectively reducing the bubble content in the water, reducing the influencing factors of the analysis, and improving the accuracy of the analysis results.

[0019] In summary, the utility model realizes the elimination of bubbles in water twice, can remove air bubbles entrained in the sample flow, and makes the turbidity analyzer unaffected by changes in sample flow rate and pressure, thereby eliminating the main interference factor in the measurement of low-range turbidity meters and improving the analysis accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a structural schematic diagram of the utility model online low turbidity analysis system;

[0021] Figure 2 It is a partial structural exploded diagram of the online low turbidity analysis system of the utility model;

[0022] Figure 3 A schematic diagram of the structure for installing the breathable cover;

[0023] Figure 4 This is a schematic diagram of the installation structure of the debubble grid of the online low turbidity analysis system of the utility model;

[0024] Figure 5 It is a structural schematic diagram of the debubble grille;

[0025] Figure 6 This is a schematic diagram of the cross-sectional structure of the flow guide trough of the online low turbidity analysis system of the utility model;

[0026] Figure 7 Schematic diagram of the flow cell structure of the turbidity analyzer of the online low turbidity analysis system of the utility model Figure 1 ;

[0027] Figure 8Schematic diagram of the flow cell structure of the turbidity analyzer of the online low turbidity analysis system of the utility model Figure 2 ;

[0028] Fig. 9 This is a schematic diagram of the internal structure of the turbidity analyzer flow cell of the online low turbidity analysis system of the utility model;

[0029] Fig.10 It is a schematic diagram of the cleaning hole structure of the defoaming tank;

[0030] Fig.11 This is a schematic diagram of the water inlet structure of the utility model online low turbidity analysis system

[0031] Fig.12 This is a schematic diagram of the structure of the turbidity analyzer probe of the online low turbidity analysis system of the utility model;

[0032] Fig.13 for Fig.12 A schematic diagram of the enlarged structure at A in the middle;

[0033] Fig.14 This is a schematic diagram of the three-section structure of the turbidity analyzer circulation cell.

[0034] Reference numerals:

[0035] 1. Upper cover of turbidity analyzer;

[0036] 2. turbidity analyzer flow cell; 201. tank body one; 202. tank body two; 2021. water tank; 2022. overflow tank; 203. tank body three; 2031. bevel edge; 2032. light absorbing plate;

[0037] 3. Turbidity analyzer probe; 301. Right-angle slot; 302. LED light emitting hole; 303. Detection port; 304. Glass sheet; 305. Semicircular shielding plate; 306. Brush;

[0038] 4. Ventilation cover; 401. Gap notch;

[0039] 5. Safety outlet; 6. Arc groove; 7. Debubble grille; 8. Guide groove; 9. Cleaning hole; 10. Baffle; 11. Debubble groove; 12. Sealing plate; 13. Drain pipe; 14. Bubble discharge hole; 15. Water inlet pipe; 16. Overflow pipe; 17. Water inlet hole; 18. Water flow trough; 19. Partition plate. DETAILED DESCRIPTION

[0040] The technical solution of the utility model is further described below in conjunction with the accompanying drawings and specific embodiments.

[0041] Example 1

[0042] like Figure 1-2As shown, the online low turbidity analysis system proposed by the utility model comprises a turbidity analyzer upper cover 1, a turbidity analyzer probe 3 connected to the bottom of the turbidity analyzer upper cover 1, and a turbidity analyzer flow cell 2 accommodating the turbidity analyzer probe 3. A water inlet pipe 15 is installed at the bottom of one side of the turbidity analyzer flow cell 2. The sample water flow enters the turbidity analyzer flow cell 2 from the water inlet pipe 15 and performs turbidity analysis of the water flow through the turbidity analyzer probe 3. The turbidity analyzer probe 3 is a prior art and adopts the 90° scattering principle for measurement. The turbidity analyzer probe 3 includes a right-angle groove 301 opened at the bottom of the turbidity analyzer probe 3, the right-angle groove 301 is located in the groove body 3 203, the LED light emitting hole 302 on the top inner wall of the right-angle groove 301, and a detection port 303 for detecting the emitted light is developed on the inner wall of one side of the right-angle groove 301. This part belongs to the detection area of ​​the turbidity analyzer probe. The light emitted from the sensor light source assembly in the turbidity analyzer probe 3 is focused and enters the turbidity meter downward. It encounters the suspended particles in the sample to generate scattered light. The photoelectric detector can detect the scattered light at a 90° angle to the incident light beam. The value of the scattered light is in a certain proportional relationship with the turbidity of the sample being measured. The principle of turbidity detection of the turbidity analyzer probe 3 of the utility model belongs to a mature existing technology and will not be repeated here. Glass sheets 304 are installed on the LED light emitting hole 302 and the detection port 303 to prevent water from entering the detection port 303 and the LED light emitting hole 302. This is also an existing technology and will not be repeated here.

[0043] like Figure 3-6 As shown, in this embodiment, a defoaming mechanism 1 connected to the water inlet pipe 15 is provided in the turbidity analyzer flow cell 2, and the defoaming mechanism 1 includes an arc groove 6 opened on the upper end surface of the turbidity analyzer flow cell 2, and the top of the water inlet pipe 15 extends into the arc groove 6, and a defoaming grid 7 is installed in the arc groove 6. The turbidity analyzer flow cell 2 includes a tank body 1 201, a tank body 202 and a tank body 3 203 connected in sequence from top to bottom, and the tank body 1 201, the tank body 202 and the tank body 3 203 are connected in sequence from top to bottom. 2 and the trough body 3 203 are connected in sequence and arranged in a stepped shape. The volumes of the trough body 1 201, the trough body 202 and the trough body 3 203 decrease from top to bottom. The turbidity detection area of ​​the turbidity analyzer probe 3 is in the trough body 203. The water inlet pipe 15 is installed at the bottom of the trough body 1 201. The top of the turbidity analyzer flow pool 2 is connected with a breathable cover 4 for being located above the debubble grille 7. The breathable cover 4 is provided with a gap notch 401 located at the top of the arc-shaped groove 6. The gap notch 401 is provided on the breathable cover 4. Water enters the arc-shaped groove 6 from the water inlet pipe 15 and is debubbled through the debubble grille 7. The debubble grille 7 is a mature existing technology. The debubble grille 7 allows the water flow to flow up and down to eliminate bubbles in the water. The removed bubbles escape through the gap notch 401 provided between the breathable cover 4 and the top of the arc-shaped groove 6, thereby achieving the first debubble removal of the sample water flow.

[0044] like Figure 6-11 As shown, a defoaming mechanism 2 connected to a defoaming mechanism 1 is installed at the bottom of the turbidity analyzer flow cell 2, and a water inlet hole 17 is provided between the defoaming mechanism 2 and the bottom of the turbidity analyzer flow cell 2. The defoaming mechanism 2 includes a guide groove 8 provided on one side of the turbidity analyzer flow cell 2, the guide groove 8 is connected to an end of the arc groove 6 away from the water inlet pipe 15, the bottom of the guide groove 8 is connected to a defoaming groove 11 connected to the guide groove 8, the defoaming groove 11 is fixed to one side of the tank body 3 203, the water inlet hole 17 is provided between the side bottom of the tank body 3 203 and the defoaming groove 11, and a bubble discharge hole 14 located directly above the defoaming groove 11 is provided at the bottom of the tank body 202. The bubble discharge hole 14 is located above the detection area of ​​the turbidity analyzer probe 3. The water flows through the debubble grille 7 into the guide groove 8, and then enters the debubble groove 11. The water flows naturally in the debubble groove 11. The bubble density is lower than that of water. The water is debubbled during the natural flow. The bubbles are discharged through the bubble discharge hole 14. The bubble discharge hole 14 is located above the detection area of ​​the turbidity analyzer probe 3. The bubbles discharged in this way will not interfere with the detection and analysis. The water flows into the tank body three 203 through the water inlet hole 17, and then the water level continues to rise for the turbidity analyzer probe 3 to perform turbidity analysis. The bubble elimination in the water is achieved twice, and the air bubbles entrained in the sample flow can be removed, so that the turbidity analyzer is not affected by the sample flow rate and pressure changes, thereby eliminating the main interference factor in the measurement of the low-range turbidity meter and improving the analysis accuracy.

[0045] Among them, a partition plate 19 is fixedly installed in the second tank body 202, and the partition plate 19 divides the second tank body 202 into a water tank 2021 and an overflow tank 2022. The top of the partition plate 19 is flush with the top of the second tank body 202, and a water flow tank 18 is provided at the top corner of the partition plate 19. The bottom of the overflow tank 2022 is fixedly connected with an overflow pipe 16 that is connected to the inside of the overflow tank 2022. When the water level of the turbidity analyzer circulation pool 2 is too high, the water enters the overflow tank 2022 through the water flow tank 18 and is discharged from the overflow pipe 16, so as to avoid excessive water pressure inside the analysis system, so that the turbidity analyzer probe 3 is not affected by the flow rate and pressure changes of the water sample, and the accuracy of the analysis result is guaranteed.

[0046] In addition, a baffle 10 is fixed in the overflow trough 2022, the top of the baffle 10 is higher than the water trough 18 but lower than the top height of the partition plate 19, the top of the baffle 10 is higher than the top of the water trough 18, a safety port 5 is provided at the bottom of the overflow trough 2022, the overflow pipe 16 and the safety port 5 are respectively located on both sides of the baffle 10, and a sponge block for blocking dust is installed on the top of the safety port 5. When the overflow pipe 16 does not discharge enough water, the water overflows the baffle 10 and further drains from the safety port 5 through the sponge block. The sponge block allows the water to pass through, and at the same time, it can also prevent external dust from entering the turbidity analyzer circulation pool 2 through the safety port 5, playing a good dust-proof role.

[0047] It is worth mentioning that a cleaning hole 9 is opened at the bottom of the debubble tank 11, and a sealing plate 12 for sealing the cleaning hole 9 is installed at the bottom of the debubble tank 11 by screws. A drain pipe 13 is installed on the sealing plate 12, and a valve is installed on the drain pipe 13. When the analysis system is working, the valve is in a closed state to prevent water from being directly discharged through the drain pipe 13 during analysis. During cleaning and maintenance, the sealing plate 12 can be removed by unscrewing the bolts. After long-term use, the turbidity analysis system needs to be flushed with water, and the flushing water is discharged from the cleaning hole 9 for easy maintenance.

[0048] Working principle: Water enters the arc groove 6 from the water inlet pipe 15, passes through the debubble grille 7 for debubble removal, and the removed bubbles escape through the gap 401 set between the air permeable cover 4 and the top of the arc groove 6, eliminating bubbles in the water flow and improving the accuracy of turbidity analysis. The water flows through the debubble grille 7 and enters the guide groove 8, and then enters the debubble groove 11 for debubble removal. The bubbles are discharged through the bubble discharge hole 14, and the water flows through the water inlet hole 17 into the tank body 3 203, and then the water level continues to rise for the turbidity analyzer probe 3 to perform turbidity analysis, achieving the elimination of bubbles in the water twice, and can remove the air bubbles entrained in the sample flow, so that the turbidity analyzer is not affected by the sample flow rate and pressure changes, thereby eliminating the most important interference factor in the measurement of the low-range turbidity meter and improving the analysis accuracy.

[0049] Example 2

[0050] like Figure 12-13 As shown, based on Example 1, a motor is installed in the turbidity analyzer probe 3, and a brush 306 for cleaning the glass sheet is installed at the bottom of the right-angle slot 301. The output shaft of the motor is connected to the brush 306 in a transmission manner, and the brush 306 is in contact with the glass sheet 304. The motor is started to drive the brush 306 to rotate to clean the glass sheet 304, which is convenient for maintenance and improves the quality of use.

[0051] The detection port 303 is a circular structure, and a semicircular shielding plate 305 is fixedly installed on the top inner wall of the detection port 303. Since the light emitted by the turbidity analyzer probe 3 is emitted from the LED light emitting hole 302, the upper half of the detection port 303 is shielded by the semicircular shielding plate 305, in order to ensure that the light received by the detection port 303 is scattered from the water, the accuracy of the analysis is further improved.

[0052] like Fig.14 As shown, a bevel 2031 is provided between the bottom inner wall and the side inner wall of the tank body 3 203, and the bevel 2031 is located directly below the LED light emitting hole 302. A light absorbing plate 2032 for absorbing stray light is installed on the bevel 2031, and the light absorbing plate 2032 is a black acrylic plate. The black acrylic plate absorbs stray light, reducing the influence of stray light on the analysis results.

[0053] The above-mentioned specific embodiments are only several optional embodiments of the present invention. Based on the technical solution of the present invention and the relevant inspiration of the above-mentioned embodiments, those skilled in the art can make various alternative improvements and combinations to the above-mentioned specific embodiments.

Claims

1. An online low turbidity analysis system, comprising a turbidity analyzer upper cover (1), a turbidity analyzer probe (3) snap-fitted to the bottom of the turbidity analyzer upper cover (1), and a turbidity analyzer flow cell (2) accommodating the turbidity analyzer probe (3), wherein a water inlet pipe (15) is installed at the bottom of one side of the turbidity analyzer flow cell (2), characterized in that: Also includes: A first defoaming mechanism connected to a water inlet pipe (15) is arranged in the circulation pool (2) of the turbidity analyzer, a second defoaming mechanism connected to the first defoaming mechanism is installed at the bottom of the circulation pool (2) of the turbidity analyzer, and a water inlet hole (17) is provided between the second defoaming mechanism and the bottom of the circulation pool (2) of the turbidity analyzer.

2. The online low turbidity analysis system according to claim 1, characterized in that: The defoaming mechanism 1 comprises an arc-shaped groove (6) provided on the upper end surface of the turbidity analyzer circulation pool (2), the top of the water inlet pipe (15) extends into the arc-shaped groove (6), a defoaming grid (7) is installed in the arc-shaped groove (6), and the turbidity analyzer circulation pool (2) comprises a groove body 1 (201), a groove body 2 (202) and a groove body 3 (203) connected in sequence from top to bottom, the groove body 1 (201), the groove body 2 (202) and the groove body 3 (203) The three (203) are connected in sequence and arranged in a stepped shape. The volumes of the first tank body (201), the second tank body (202) and the third tank body (203) decrease from top to bottom. The water inlet pipe (15) is installed at the bottom of the first tank body (201). The top of the turbidity analyzer circulation pool (2) is snap-connected with a breathable cover (4) located above the debubble grille (7). The breathable cover (4) is provided with a gap notch (401) located at the top of the arc-shaped groove (6).

3. The online low turbidity analysis system according to claim 2, characterized in that: The defoaming mechanism (2) comprises a guide groove (8) provided on one side of the turbidity analyzer circulation pool (2), the guide groove (8) being connected to the end of the arc groove (6) away from the water inlet pipe (15), the bottom of the guide groove (8) being connected to a defoaming groove (11) which is connected to the guide groove (8), the defoaming groove (11) being fixed to one side of the tank body (203), the water inlet hole (17) being provided between the bottom of the side surface of the tank body (203) and the defoaming groove (11), and the bottom of the tank body (202) being provided with a bubble discharge hole (14) which is located directly above the defoaming groove (11).

4. The online low turbidity analysis system according to claim 3, characterized in that: A partition plate (19) is fixedly installed in the second tank body (202), and the partition plate (19) divides the second tank body (202) into a water storage tank (2021) and an overflow tank (2022). The top of the partition plate (19) is flush with the top of the second tank body (202), and a water flow tank (18) is provided at the top corner of the partition plate (19). The bottom of the overflow tank (2022) is fixedly connected to an overflow pipe (16) that is in communication with the inside of the overflow tank (2022).

5. The online low turbidity analysis system according to claim 4, characterized in that: A baffle (10) is fixed in the overflow trough (2022), the top of the baffle (10) is higher than the top of the water flow trough (18), a safety port (5) is provided at the bottom of the overflow trough (2022), the overflow pipe (16) and the safety port (5) are respectively located on both sides of the baffle (10), and a sponge block for blocking dust is installed on the top of the safety port (5).

6. The online low turbidity analysis system according to claim 3, characterized in that: A cleaning hole (9) is provided at the bottom of the defoaming tank (11), a sealing plate (12) for sealing the cleaning hole (9) is installed at the bottom of the defoaming tank (11) by means of screws, and a drain pipe (13) is installed on the sealing plate (12).

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