An on-line wastewater volatile fatty acid analysis apparatus

Abstract

This utility model relates to the field of environmental monitoring technology, specifically to an online analysis device for volatile fatty acids in wastewater. It includes a housing, with a mixing tank inside. A wastewater inlet hopper is fixedly installed on the left side of the upper surface of the housing. The portion of the wastewater inlet hopper on the upper surface of the housing is a rectangular structure with openings at the top and bottom and a hollow interior. The portion of the wastewater inlet hopper inside the housing is funnel-shaped. An analytical liquid delivery pipe is fixedly installed on the right side of the upper surface of the housing. By incorporating a moving component, the mixing tank can be moved laterally within the housing cavity, ensuring a smooth connection between wastewater reception and mixing / analysis, reducing manual intervention, and improving analysis efficiency. The stirring mechanism uses a liftable stirring roller combined with a rotating stirring design, adapting to the mixing requirements of different liquid levels within the mixing tank, ensuring uniform mixing of wastewater and analytical liquid, and improving the accuracy of the analysis results.

Description

Technical Field

[0001] This utility model relates to the field of environmental monitoring technology, specifically to an online analysis device for volatile fatty acids in wastewater. Background Technology

[0002] Volatile fatty acids are common organic pollutants in wastewater, and their content is an important indicator for measuring wastewater treatment effectiveness and the degree of water pollution. Accurate and timely monitoring of their content is of great significance for environmental governance and wastewater treatment process optimization. Currently, the analysis of volatile fatty acids in wastewater mostly relies on offline laboratory detection methods, which require manual collection of water samples followed by pretreatment and detection. This approach suffers from long detection cycles and poor timeliness, making it difficult to meet the needs of real-time monitoring.

[0003] Existing online analytical equipment has several shortcomings in practical applications: Firstly, some equipment lacks effective impurity filtration devices, allowing solid particles in wastewater to easily enter the reaction system, affecting the mixing reaction between the analytical solution and wastewater and leading to deviations in test results. Secondly, the mixing mechanism is poorly designed, often using fixed-position stirring, which is difficult to adapt to the mixing requirements of water samples of different volumes, easily resulting in uneven mixing and further reducing analytical accuracy. Furthermore, the equipment is inconvenient to move and lacks convenient observation and maintenance structures, increasing operational difficulty and maintenance costs.

[0004] To address the aforementioned issues, there is an urgent need for an online analyzer of volatile fatty acids in wastewater that integrates impurity filtration, efficient mixing, convenient operation, and flexible mobility. This would enable real-time and accurate monitoring of volatile fatty acids in wastewater, improve analytical efficiency and reliability, and provide timely and effective data support for wastewater treatment and environmental monitoring. Therefore, we propose an online analyzer for volatile fatty acids in wastewater. Utility Model Content

[0005] The purpose of this invention is to provide an online analysis device for volatile fatty acids in wastewater to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] An online analysis device for volatile fatty acids in wastewater, comprising:

[0008] The box body has a mixing tank inside. A wastewater inlet hopper is fixedly installed on the left side of the upper surface of the box body. The wastewater inlet hopper on the upper surface of the box body has a rectangular structure with openings at the top and bottom and a hollow interior. The wastewater inlet hopper on the inner cavity of the box body has a bucket-shaped structure. An analytical liquid delivery pipe is fixedly installed on the right side of the upper surface of the box body.

[0009] A movable component is disposed directly below the mixing tank and is used to control the lateral displacement of the mixing tank within the cavity of the housing;

[0010] A stirring mechanism is located on the right side of the inner cavity of the tank and is used to mix and stir the wastewater and analytical liquid in the inner cavity of the tank.

[0011] Preferably, a filter screen is inserted and fitted inside the wastewater inlet hopper.

[0012] Preferably, a cover is rotatably installed at the top opening of the wastewater inlet hopper via a hinge.

[0013] Preferably, the moving component includes:

[0014] Two sets of electric guide rails are arranged in parallel and symmetrically, and are fixedly installed in the lower part of the inner cavity of the box. Sliding sleeves are slidably installed on the electric guide rails, and a support plate is fixedly installed between the two sliding sleeves. The mixing tank is fixedly installed on the upper surface of the support plate, and a discharge pipe is fixedly installed on the lower surface of the mixing tank. A discharge valve is fixedly installed on the discharge pipe.

[0015] Preferably, the stirring mechanism includes:

[0016] A lifting column is fixedly installed in the middle of the right side wall of the inner cavity of the box. A sliding groove is opened in the lifting column, and a threaded rod is rotatably installed in the sliding groove. A threaded block is threadedly connected to the threaded rod, and the threaded block slides in fit with the sliding groove. A motor is fixedly installed on the upper surface of the box, and the output shaft of the motor is coaxially connected to the threaded rod. A connecting arm is fixedly installed on the left side wall of the threaded block, and a bracket is fixedly installed at the other end of the connecting arm. A motor is fixedly installed on the upper surface of the bracket, and a stirring roller is rotatably installed on the lower surface of the bracket. The output shaft of the motor is coaxially connected to the stirring roller.

[0017] Preferably, self-locking casters are fixedly installed on the lower surface of the housing and near the four corners.

[0018] Preferably, an observation port is provided on the front side of the box, and an observation window is rotatably installed at the observation port position of the box.

[0019] Compared with the prior art, the beneficial effects of this utility model are:

[0020] 1. This online volatile fatty acid analysis device for wastewater, by setting up a moving component, can realize the lateral displacement of the mixing tank within the internal cavity of the tank, so as to connect the wastewater receiving and mixing analysis process in an orderly manner, reduce manual intervention, and improve analysis efficiency.

[0021] 2. This online volatile fatty acid analysis equipment for wastewater uses a stirring mechanism with a liftable stirring roller and a rotary stirring design, which can adapt to the mixing needs of different liquid levels in the mixing tank, ensuring uniform mixing of wastewater and analytical solution and improving the accuracy of analysis results.

[0022] 3. This online volatile fatty acid analysis device for wastewater integrates functions such as filter screen for impurities, dustproof cover for protection, observation window for real-time observation, and self-locking casters for flexible movement. The overall structure is compact and reasonable, highly practical, and can meet the online analysis needs in complex wastewater environments. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0024] Figure 2 This is one of the schematic diagrams of the internal structure of the box in this utility model;

[0025] Figure 3 This is the second schematic diagram of the internal structure of the box in this utility model;

[0026] Figure 4 This is a schematic diagram of the structure of the mobile component in this utility model;

[0027] Figure 5 This is a cross-sectional view of the wastewater inlet hopper in this utility model;

[0028] Figure 6 This is a schematic diagram of the stirring mechanism in this utility model.

[0029] In the diagram: 1. Box body; 2. Mixing tank; 3. Wastewater inlet hopper; 4. Filter screen; 5. Baffle cover; 6. Analytical liquid delivery pipe; 7. Electric guide rail; 8. Sliding sleeve; 9. Support plate; 10. Discharge pipe; 11. Lifting column; 12. Slide chute; 13. Threaded rod; 14. Threaded block; 15. Motor 1; 16. Connecting arm; 17. Bracket; 18. Motor 2; 19. Stirring roller; 20. Self-locking caster wheel; 21. Observation window. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] In the description of this application, it should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. For ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items, and therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0032] Please see Figure 1 - Figure 6 As shown, this utility model provides a technical solution:

[0033] An online analysis device for volatile fatty acids in wastewater, comprising:

[0034] The chamber 1 has a mixing tank 2 inside. A wastewater inlet 3 is fixedly installed on the left side of the upper surface of the chamber 1. The wastewater inlet 3 is a rectangular structure with openings at the top and bottom and hollow inside. The wastewater inlet 3 is a bucket-shaped structure inside the chamber 1. An analytical liquid delivery pipe 6 is fixedly installed on the right side of the upper surface of the chamber 1.

[0035] A movable component is positioned directly below the mixing tank 2 and is used to control the lateral displacement of the mixing tank 2 within the cavity of the housing 1.

[0036] The stirring mechanism is located on the right side of the inner cavity of the tank 1 and is used to mix and stir the wastewater and analytical liquid in the inner cavity of the tank 1.

[0037] In this embodiment, a filter screen 4 is inserted into the wastewater inlet hopper 3. The filter screen 4 can filter the wastewater entering the wastewater inlet hopper 3, intercepting solid impurities or particulate matter in the wastewater, and preventing impurities from entering the subsequent mixing tank 2 and affecting the mixing reaction between the analytical solution and the wastewater. In addition, the filter screen 4 is installed by insertion, which is convenient for regular disassembly, cleaning or replacement.

[0038] In this embodiment, a cover 5 is rotatably installed at the top opening of the wastewater inlet hopper 3 via a hinge. The cover 5 can be closed at the top opening of the wastewater inlet hopper 3 when the equipment is not in use to prevent external dust and debris from falling into the wastewater inlet hopper 3 and causing pollution; when wastewater needs to be injected, it can be opened by rotating the hinge, making operation convenient.

[0039] In this embodiment, the moving component includes:

[0040] Two sets of electric guide rails 7 are arranged in parallel and symmetrically, and are fixedly installed in the lower part of the inner cavity of the housing 1. Sliding sleeves 8 are slidably installed on the electric guide rails 7, and a support plate 9 is fixedly installed between the two sliding sleeves 8. The mixing tank 2 is fixedly installed on the upper surface of the support plate 9, and a discharge pipe 10 is fixed on the lower surface of the mixing tank 2. A discharge valve is fixed on the discharge pipe 10. The electric guide rails 7 provide a stable sliding track for the sliding sleeves 8. When the sliding sleeves 8 slide along the electric guide rails 7, they can drive the support plate 9 and the mixing tank 2 above to move laterally synchronously, realizing the switching of the position of the mixing tank 2 between receiving wastewater on the left side and mixing and analyzing on the right side of the inner cavity of the housing 1. The discharge pipe 10 is used to discharge the mixed liquid in the mixing tank 2, and the discharge valve can control the opening and closing of the discharge, which facilitates the control of the liquid processing rhythm after analysis.

[0041] In this embodiment, the stirring mechanism includes:

[0042] A lifting column 11 is fixedly installed in the middle of the right side wall of the inner cavity of the box 1. A sliding groove 12 is opened in the lifting column 11, and a threaded rod 13 is rotatably installed in the sliding groove 12. A threaded block 14 is threadedly connected to the threaded rod 13, and the threaded block 14 slides with the sliding groove 12. A motor 15 is fixedly installed on the upper surface of the box 1, and the output shaft of the motor 15 is coaxially connected with the threaded rod 13. A connecting arm 16 is fixedly installed on the left side wall of the threaded block 14, and a bracket 17 is fixedly installed on the other end of the connecting arm 16. A motor 2 18 is fixedly installed on the upper surface of the bracket 17, and a stirring roller 19 is rotatably installed on the lower surface of the bracket 17. The output shaft of the motor 2 18 is coaxially connected with the stirring roller 19. When motor 15 is working, it drives the threaded rod 13 to rotate. The threaded rod 13 is threadedly engaged with the threaded block 14, and the threaded block 14 is limited by the slide groove 12, so that the threaded block 14 slides up and down along the slide groove 12. Then, through the connecting arm 16, it drives the bracket 17, motor 2 18 and stirring roller 19 to rise and fall synchronously, so as to meet the mixing needs of different liquid levels in the mixing tank 2. When motor 2 18 is working, it drives the stirring roller 19 to rotate. The rotation of the stirring roller 19 can stir the wastewater and analytical liquid in the mixing tank 2, accelerate the mixing speed of the two, and ensure that the reaction is complete.

[0043] In this embodiment, self-locking casters 20 are fixedly installed on the lower surface of the housing 1 and near the four corners. The self-locking casters 20 facilitate the overall movement of the equipment, allow for flexible adjustment of the installation position, and have a self-locking function to fix the position during equipment operation, preventing the equipment from shifting due to vibration or other reasons.

[0044] In this embodiment, an observation port is provided on the front side of the box 1, and an observation window 21 is rotatably installed at the observation port position of the box 1. The observation window 21 is made of transparent material, which makes it easy for the operator to observe the position and status of the mixing tank 2 inside the box 1 and the reaction status of the mixture in real time; the rotatable installation design makes it easy to open, which facilitates the inspection or maintenance of the internal parts of the box 1.

[0045] When using the wastewater volatile fatty acid online analysis equipment of this embodiment:

[0046] First, the equipment is moved to the designated working position and locked in place using the self-locking casters 20. The cover 5 is then opened by rotating it, and the wastewater to be analyzed is injected into the wastewater inlet 3. After being filtered through the filter screen 4 inside the wastewater inlet 3, the wastewater enters the inner cavity of the housing 1. The mixing tank 2 is moved to a position directly below the wastewater inlet 3 by the moving component to receive the wastewater. Once the wastewater injection is complete, the moving component moves the mixing tank 2 laterally to a position below the stirring mechanism. Then, a quantitative analytical solution is added to the mixing tank 2 through the analytical solution delivery pipe 6. The stirring mechanism is then activated: motor 15 drives the threaded rod 13 to rotate, causing the threaded block 14 to descend along the slide groove 12, which in turn drives the stirring roller 19 into the mixing tank 2. Simultaneously, motor 2 drives the stirring roller 19 to rotate, thoroughly mixing the wastewater and analytical solution. During the mixing process, the operator can observe the internal reaction through the observation window 21. After mixing is complete, motor 15 reverses its rotation, causing the threaded block 14 to rise and reset. The discharge valve on the discharge pipe 10 is then opened to discharge the mixed liquid for subsequent analysis, completing one analysis operation.

[0047] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A wastewater volatile fatty acid on-line analysis apparatus characterized by comprising: include: The box (1) has a mixing tank (2) in its inner cavity. A wastewater inlet hopper (3) is fixedly installed on the upper surface of the box (1) at the left side. The wastewater inlet hopper (3) is a rectangular structure with an opening at the top and bottom and a hollow interior at the upper surface of the box (1). The wastewater inlet hopper (3) is a bucket-shaped structure at the inner cavity of the box (1). An analytical liquid delivery pipe (6) is fixedly installed on the upper surface of the box (1) at the right side. A movable component is disposed directly below the mixing tank (2) and is used to control the lateral displacement of the mixing tank (2) within the cavity of the housing (1); The stirring mechanism is located on the right side of the inner cavity of the box (1) and is used to mix and stir the wastewater and analytical liquid in the inner cavity of the box (1).

2. The apparatus for on-line analysis of wastewater volatile fatty acids according to claim 1, characterized in that: A filter screen (4) is inserted into the wastewater inlet hopper (3).

3. The apparatus for on-line analysis of wastewater volatile fatty acids according to claim 1, characterized in that: A cover (5) is rotatably installed at the top opening of the wastewater inlet hopper (3) via a hinge.

4. The apparatus for on-line analysis of wastewater volatile fatty acids according to claim 1, characterized in that: The moving component includes: Two sets of electric guide rails (7) are arranged in parallel and symmetrically, and are fixedly installed in the lower part of the inner cavity of the box (1). Sliding sleeves (8) are slidably installed on the electric guide rails (7). A support plate (9) is fixedly installed between the two sliding sleeves (8). The mixing tank (2) is fixedly installed on the upper surface of the support plate (9). A discharge pipe (10) is fixed on the lower surface of the mixing tank (2). A discharge valve is fixed on the discharge pipe (10).

5. The apparatus for on-line analysis of wastewater volatile fatty acids according to claim 1, characterized in that: The stirring mechanism includes: A lifting column (11) is fixedly installed in the middle of the right side wall of the inner cavity of the box (1). A sliding groove (12) is provided in the lifting column (11). A threaded rod (13) is rotatably installed in the sliding groove (12). A threaded block (14) is threadedly connected to the threaded rod (13), and the threaded block (14) slides with the sliding groove (12). A motor (15) is fixedly installed on the upper surface of the box (1), and the output shaft of the motor (15) is coaxially connected with the threaded rod (13). A connecting arm (16) is fixedly installed on the left side wall of the threaded block (14). A bracket (17) is fixedly installed at the other end of the connecting arm (16). A motor (18) is fixedly installed on the upper surface of the bracket (17). A stirring roller (19) is rotatably installed on the lower surface of the bracket (17). The output shaft of the motor (18) is coaxially connected with the stirring roller (19).

6. The apparatus for on-line analysis of wastewater volatile fatty acids according to claim 1, characterized in that: Self-locking casters (20) are fixedly installed on the lower surface of the housing (1) and near the four corners.

7. The apparatus for on-line analysis of wastewater volatile fatty acids according to claim 1, characterized in that: An observation port is provided on the front side of the box (1), and an observation window (21) is rotatably installed at the observation port position of the box (1).

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