Sludge concentration measuring instrument with dilution function

Abstract

The utility model relates to the field of sludge concentration measuring instruments, and discloses a sludge concentration measuring instrument with a dilution function, which comprises a mixing cavity, a detection head, a detection host and a dilution system, and is characterized in that a stirring mechanism is arranged and comprises a motor, a gearbox, an outer rotating shaft and an inner rotating shaft, and the outer rotating shaft and the inner rotating shaft are coaxially sleeved. In the gear box, the first bevel gear is driven by a motor and is simultaneously meshed with the second bevel gear and the third bevel gear so as to respectively drive the outer rotating shaft and the inner rotating shaft to synchronously rotate in opposite directions, an outer stirring ring and a stirring rod are fixed on the outer rotating shaft, and an inner stirring ring is fixed on the inner rotating shaft; and the two devices cooperate to perform forward and reverse stirring on the sludge and the diluent in the mixing cavity. According to the utility model, through a unique bidirectional reverse stirring structure, strong shearing force and convection current are generated, so that the problems of non-uniform unidirectional stirring and mixing and inaccurate measurement in the prior art are effectively solved, materials can be quickly and uniformly mixed, and the accuracy and the reliability of a measurement result are remarkably improved.

Description

Technical Field

[0001] This utility model relates to the field of sludge concentration measuring instruments, and in particular to a sludge concentration measuring instrument with dilution function. Background Technology

[0002] In wastewater treatment, water purification, and industrial wastewater treatment processes, sludge concentration is a critical process parameter. Real-time and accurate monitoring of sludge concentration is essential for optimizing reagent dosage, controlling treatment efficiency, and evaluating the performance of dewatering equipment. Currently, various online or laboratory-grade sludge concentration measuring instruments are available on the market, typically utilizing principles such as optics, ultrasound, or microwaves.

[0003] These conventional measuring instruments can provide relatively accurate measurement results when dealing with medium- and low-concentration sludge with good flowability. However, when faced with high-concentration sludge from equipment such as thickeners or plate and frame filter presses, the limitations of existing technology become apparent. This type of high-concentration sludge is usually in the form of a viscous paste or semi-solid, with extremely poor flowability, making it difficult to flow smoothly within the pipes or measuring chambers of the measuring instrument. This results in the sensor being unable to contact a representative sample, or even being unable to perform a measurement at all. Therefore, direct measurement results are often highly inaccurate or impossible to obtain.

[0004] The industry standard practice is to dilute high-concentration sludge samples before measurement. Operators need to take a fixed amount of sludge sample, add a fixed amount of diluent (such as water), and then manually stir until uniformly mixed before measuring the concentration. Finally, the original sludge concentration is calculated based on the dilution ratio. However, this manual process is not only cumbersome and time-consuming, but more importantly, its accuracy heavily relies on the operator's experience and sense of responsibility. Especially during the mixing stage, due to the viscosity of sludge, manual stirring makes it difficult to ensure that all sludge clumps are completely broken up and uniformly mixed with the diluent. Any localized uneven mixing will lead to significant deviations in the final measurement results. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a sludge concentration measuring instrument with dilution function, which aims to improve the problem of low measurement accuracy caused by uneven mixing in existing sludge concentration measuring instruments with dilution function.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a sludge concentration measuring instrument with dilution function, comprising: a mixing chamber, a probe, a detection host, a dilution system, and a stirring mechanism, wherein the stirring mechanism comprises a motor, an outer rotating shaft and an inner rotating shaft, a gearbox, an outer stirring ring, a stirring rod, and an inner stirring ring.

[0007] The outer and inner rotating shafts are coaxially mounted, and the gearbox contains a first bevel gear, a second bevel gear, and a third bevel gear.

[0008] Furthermore, the first bevel gear is connected to the motor and simultaneously meshes with the second and third bevel gears. The second bevel gear is driven by the outer rotating shaft, and the third bevel gear is driven by the inner rotating shaft. The outer stirring ring and stirring rod are fixed on the outer rotating shaft, and the inner stirring ring is fixed on the inner rotating shaft.

[0009] Preferably, the inner stirring ring is disposed inside the outer stirring ring, and the stirring rod is fixedly connected to the circumference of the outer stirring ring.

[0010] Preferably, the stirring rod extends downward from the outer stirring ring along the axial direction of the outer rotating shaft.

[0011] Preferably, the sludge concentration measuring instrument with dilution function further includes a protective box, the motor is housed in the protective box, and the protective box is fixedly installed on the top of the mixing chamber, and the gearbox is located inside the mixing chamber.

[0012] Preferably, the first bevel gear is connected to the output end of the motor via a bearing.

[0013] Preferably, the dilution system further includes a dilution tank and a pumping pipe, and the micro pump is connected to the interior of the dilution tank through the pumping pipe.

[0014] Preferably, the probe is disposed inside the mixing cavity and is electrically connected to the detection host via a signal transmission line.

[0015] Preferably, the sludge concentration measuring instrument with dilution function further includes a workbench, on which both the mixing chamber and the dilution system are mounted.

[0016] This utility model has the following beneficial effects:

[0017] 1. This utility model, by setting up a motor, a gearbox, coaxially sleeved outer and inner rotating shafts, and an outer stirring ring, a stirring rod, and an inner stirring ring respectively connected to the inner and outer rotating shafts, wherein the first, second, and third bevel gears in the gearbox mesh with each other to drive the outer and inner rotating shafts to rotate in opposite directions, solves the problems of existing technologies where unidirectional stirring is difficult to mix high-concentration sludge, easily causes the liquid to swirl idly, resulting in uneven mixing and inaccurate final measurement results. It achieves strong shear force and convection generated by forward and reverse coordinated stirring, so that the sludge and diluent can be mixed quickly, fully, and evenly, thereby greatly improving the accuracy and reliability of sludge concentration measurement.

[0018] 2. This utility model organically combines a dilution system including a micro pump and a diluent tank, a bidirectional reverse stirring mechanism, and a detection system including a probe and a detection host into one unit. This solves the problem that traditional sludge concentration measurement requires manual dilution, sampling, and mixing, which is cumbersome, inefficient, and prone to human error. It achieves full automation from dilution and mixing to detection, which not only improves measurement efficiency and result consistency but also reduces the intensity of manual operation and potential risks. Attached Figure Description

[0019] Figure 1 This is a three-dimensional schematic diagram of a sludge concentration measuring instrument with dilution function proposed in this utility model;

[0020] Figure 2 This is a schematic diagram of the main unit of a sludge concentration measuring instrument with dilution function proposed in this utility model;

[0021] Figure 3 This is a schematic diagram of the outer stirring ring of a sludge concentration measuring instrument with dilution function proposed in this utility model.

[0022] Legend:

[0023] 1. Workbench; 2. Mixing chamber; 3. Inlet; 4. Signal transmission line; 5. Detection host; 6. Protection box; 7. Liquid inlet pipe; 8. Miniature pump; 9. Dilute liquid tank; 10. Liquid extraction pipe; 11. Probe; 12. Motor; 13. First bevel gear; 14. Second bevel gear; 15. Outer stirring ring; 16. Stirring rod; 17. Inner stirring ring; 18. Outer rotating shaft; 19. Inner rotating shaft; 20. Gearbox; 21. Third bevel gear. Detailed Implementation

[0024] 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.

[0025] Reference Figures 1-3 One embodiment of this utility model is a sludge concentration measuring instrument with dilution function. The sludge concentration measuring instrument with dilution function includes a workbench 1 as a base, a mixing chamber 2 fixedly disposed on the workbench 1, and a sludge inlet 3 opened on the side wall of the mixing chamber 2.

[0026] The dilution system is used to deliver diluent into the mixing chamber 2. The dilution system includes a diluent tank 9, a suction pipe 10, a micro pump 8, and an inlet pipe 7. The diluent tank 9 and the micro pump 8 are both set on the workbench 1. The micro pump 8 is connected to the internal space of the diluent tank 9 through the suction pipe 10, and the liquid outlet of the micro pump 8 is connected to the internal space of the mixing chamber 2 through the inlet pipe 7.

[0027] The probe 11 is installed inside the mixing chamber 2 to detect the liquid inside the chamber. The probe 11 is electrically connected to the detection host 5 installed outside the chamber via the signal transmission line 4.

[0028] The mixing chamber 2 is also equipped with a stirring mechanism, which is used to mix the sludge and diluent entering the mixing chamber 2.

[0029] The top of the stirring mechanism is equipped with a protective box 6, the motor 12 is housed in the protective box 6, the protective box 6 is fixedly installed on the top of the mixing chamber 2, and the gearbox 20 is installed in the mixing chamber 2.

[0030] The output end of the motor 12 is rotatably connected to the first bevel gear 13 through a bearing. The first bevel gear 13 is located inside the gearbox 20. The gearbox 20 is also equipped with a second bevel gear 14 and a third bevel gear 21. The tooth surface of the first bevel gear 13 meshes with the tooth surface of the second bevel gear 14 and the tooth surface of the third bevel gear 21.

[0031] The stirring mechanism also includes an outer rotating shaft 18 and an inner rotating shaft 19. The inner rotating shaft 19 passes through the hollow cavity of the outer rotating shaft 18. The outer rotating shaft 18 and the inner rotating shaft 19 are coaxially arranged and can rotate relative to each other. The second bevel gear 14 is fixedly connected to the upper end of the outer rotating shaft 18, and the third bevel gear 21 is fixedly connected to the upper end of the inner rotating shaft 19.

[0032] The outer stirring ring 15 is fixedly connected to the lower end of the outer rotating shaft 18. One end of a plurality of stirring rods 16 is evenly fixedly connected to the circumference of the outer stirring ring 15, and the other end of the stirring rods 16 extends downward from the outer stirring ring 15 into the mixing chamber 2 along the axial direction of the outer rotating shaft 18.

[0033] The inner stirring ring 17 is fixedly connected to the lower end of the inner rotating shaft 19, and the inner stirring ring 17 is set on the inner concentric circle of the outer stirring ring 15.

[0034] As a preferred embodiment, the stirring rod 16 also passes through the through hole opened on the inner stirring ring 17, so that the rotation of the inner stirring ring 17 can also drive the stirring rod 16, thereby forming a more complex mixing flow field in the mixing chamber 2.

[0035] As another preferred embodiment, the detection host 5 integrates a microprocessor and a display screen. The microprocessor receives and processes the concentration signal from the probe 11 and displays the processed concentration value on the display screen. The technology of the probe 11 detecting the liquid concentration and transmitting the electrical signal to the detection host 5 via the signal transmission line 4 for processing and display is well known in the art and will not be described further here.

[0036] Working principle: When the sludge concentration measuring instrument with dilution function of this utility model is working, firstly, the high-concentration sludge to be tested enters the mixing chamber 2 from the inlet 3. Then, the main unit 5 controls the micro pump 8 to start. The micro pump 8 draws a certain amount of diluent from the dilution tank 9 through the liquid extraction pipe 10. The diluent is transported to the mixing chamber 2 through the liquid inlet pipe 7 and initially mixed with the sludge.

[0037] After the diluent is added, the detection host 5 controls the motor 12 to start. The power of the motor 12 is transmitted to the first bevel gear 13 through the bearing, causing it to rotate. Since the first bevel gear 13 meshes with both the second bevel gear 14 and the third bevel gear 21, it drives the second bevel gear 14 and the third bevel gear 21 to rotate in opposite directions. The rotation of the second bevel gear 14 drives the outer stirring ring 15 and the stirring rod 16 fixed thereon to rotate in one direction via the outer rotating shaft 18. At the same time, the rotation of the third bevel gear 21 drives the inner stirring ring 17 to rotate in the opposite direction via the inner rotating shaft 19. Through the forward stirring of the outer stirring ring 15 and the stirring rod 16, and the reverse stirring of the inner stirring ring 17 and the stirring rod 16, strong shearing and convection are formed in the mixing chamber 2, allowing the sludge and diluent to be mixed quickly, thoroughly, and uniformly.

[0038] After the mixture is thoroughly mixed, the motor 12 stops working. The probe 11, located in the mixing chamber 2, begins to detect the concentration of the mixture and transmits the detected signal to the detection host 5 via the signal transmission line 4. The detection host 5 processes and calculates the signal and combines it with the dilution ratio to finally display the accurate concentration value of the original sludge on the display screen, thus completing a complete measurement process.

[0039] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A sludge concentration measuring instrument with dilution function, comprising: A mixing chamber (2) is provided with a sewage inlet (3); Detector head (11); The detection host (5) is connected to the probe head (11); The dilution system includes a micro pump (8) for delivering the diluent and an inlet pipe (7) in communication with the mixing chamber (2). A stirring mechanism is disposed within the mixing chamber (2); Its features are: The stirring mechanism includes a motor (12), an outer rotating shaft (18) and an inner rotating shaft (19) sleeved together, and a gearbox (20). The gearbox (20) is provided with a first bevel gear (13), a second bevel gear (14) and a third bevel gear (21). The first bevel gear (13) is connected to the output end of the motor (12) and simultaneously meshes with the second bevel gear (14) and the third bevel gear (21); The second bevel gear (14) is connected to the outer rotating shaft (18) in a driving connection, and the third bevel gear (21) is connected to the inner rotating shaft (19) in a driving connection. An outer stirring ring (15) and a stirring rod (16) are fixed on the outer rotating shaft (18). An inner stirring ring (17) is fixed on the inner rotating shaft (19).

2. The sludge concentration measuring instrument with dilution function according to claim 1, characterized in that: The inner stirring ring (17) is disposed on the inner side of the outer stirring ring (15), and the stirring rod (16) is fixedly connected to the circumference of the outer stirring ring (15).

3. The sludge concentration measuring instrument with dilution function according to claim 1, characterized in that: The dilution system also includes a dilution tank (9) and a pumping pipe (10); the micro pump (8) is connected to the interior of the dilution tank (9) through the pumping pipe (10).

4. The sludge concentration measuring instrument with dilution function according to claim 1, characterized in that: The probe (11) is located inside the mixing chamber (2), and the probe (11) is electrically connected to the detection host (5) via a signal transmission line (4).

5. A sludge concentration measuring instrument with dilution function according to claim 1, characterized in that: It also includes a protective box (6); the motor (12) is housed in the protective box (6), the protective box (6) is installed and fixed on the top of the mixing chamber (2), and the gearbox (20) is located in the mixing chamber (2).

6. The sludge concentration measuring instrument with dilution function according to claim 1, characterized in that: The first bevel gear (13) is connected to the output end of the motor (12) via a bearing.

7. A sludge concentration measuring instrument with dilution function according to claim 1, characterized in that: It also includes a workbench (1), on which the mixing chamber (2) and the dilution system are both located.

8. A sludge concentration measuring instrument with dilution function according to claim 1, characterized in that: The stirring rod (16) extends downward from the outer stirring ring (15) along the axial direction of the outer rotating shaft (18).

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