Device for automatically detecting sedimentation ratio

Abstract

The utility model relates to an automatic settlement ratio detection device which comprises a pipeline switching module, a settlement ratio detection module, a cleaning module and a control module, and the pipeline switching module comprises a first electric three-way valve, a second electric three-way valve and a servo water pump. The lower end of the first electric three-way valve is connected with a first sampling opening, the middle of the first electric three-way valve is connected with a second sampling opening, the settlement ratio detection module comprises a measuring cylinder, an optical fiber detector and a moving mechanism, the bottom of the measuring cylinder is connected with the upper end of the second electric three-way valve, and the optical fiber detector is arranged on the outer side of the measuring cylinder; the optical fiber detector is fixedly connected with the moving mechanism; the cleaning module is arranged at the upper end of the measuring cylinder; the control module comprises a PLC (Programmable Logic Controller), a driving unit, an HMI (Human Machine Interface) module and a communication module; and the PLC is connected with an upper computer through the communication module. According to the utility model, sampling and switching of a plurality of sampling points are realized, and automatic sampling, online detection and data recording and transmission are completed.

Description

TECHNICAL FIELD

[0001] The utility model relates to sewage treatment technical field, concretely relates to a kind of automatic detection sedimentation ratio device. BACKGROUND

[0002] In the sewage treatment process, the data of biological control system on site needs to be collected, and the sedimentation ratio is a key data. Currently, this data needs to be sampled and detected manually. After sampling, the technician uses the instrument to detect, and the process needs about half an hour. At the fixed sampling time, the technician needs to take the on-site sample to the laboratory for detection.

[0003] The current manual detection has the following shortcomings:

[0004] (1) In actual production, the position of manual water sampling will be different, so it is impossible to ensure that the sampling is representative, and the detection accuracy will also be affected by experience.

[0005] (2) The sedimentation ratio has timeliness, so it needs to be collected at different times. Manual sampling is low in efficiency and affects the judgment of the process.

[0006] Therefore, a sedimentation ratio detection device that is convenient to sample and high in detection efficiency is needed. SUMMARY

[0007] The utility model discloses to solve the problem that the existing sedimentation ratio detection is affected by experience and poor in timeliness, proposes a kind of automatic detection sedimentation ratio device, is provided with pipeline switching module and realizes multiple sampling points sampling and switching, is provided with sedimentation ratio detection module and realizes sedimentation ratio standard detection, is provided with control module and completes automatic sampling, online detection and data record and transmission, improves detection efficiency, and combines cleaning module and carries out cleaning to sedimentation ratio detection module to improve detection accuracy.

[0008] To achieve the above purpose, the utility model provides a kind of automatic detection sedimentation ratio device, including pipeline switching module, sedimentation ratio detection module, cleaning module and control module, the pipeline switching module includes first electric tee valve, second electric tee valve and servo water pump, the upper end of the first electric tee valve is connected with the servo water pump, the lower end of first electric tee valve is connected with first sampling port, and the middle part of first electric tee valve is connected with second sampling port, the other side of the servo water pump is connected with second electric tee valve, and the middle part of second electric tee valve is connected with drain port;

[0009] The sedimentation ratio detection module comprises a measuring cylinder, a fiber optic detector and a moving mechanism, the bottom of the measuring cylinder is connected with the upper end of the second electric tee valve, the fiber optic detector is arranged on the outer side of the measuring cylinder, and the fiber optic detector is fixedly connected with the moving mechanism; the moving mechanism drives the fiber optic detector to move up and down along the measuring cylinder; and the upper end of the measuring cylinder is provided with the cleaning module.

[0010] The control module comprises a PLC controller, a driving unit, an HMI module and a communication module; the PLC controller is connected with the first electric tee valve, the second electric tee valve, the servo pump, the moving mechanism and the cleaning module through the driving unit; the input end of the PLC controller is connected with the fiber optic detector; the PLC controller is in communication connection with the HMI module; and the PLC controller is connected with the upper computer through the communication module.

[0011] Further, the measuring cylinder is a cylindrical structure made of transparent material.

[0012] The fiber optic detector comprises a transmitting end and a receiving end, and the transmitting end and the receiving end are correspondingly arranged on the two sides of the measuring cylinder.

[0013] The light signal emitted by the transmitting end of the fiber optic detector is received by the receiving end, the transparent material is used to complete the light signal passing through the measuring cylinder, the sewage is extracted at the sampling point in the measuring cylinder, the impurities in the sewage will settle down with time, the fiber optic detector moves along the measuring cylinder through the moving mechanism, the light signal passes through the water body from top to bottom, and therefore the light signal intensity that can be received by the receiving end will change, and then the sedimentation ratio data is obtained.

[0014] Further, the moving mechanism comprises a servo electric sliding table and a fixed frame, the servo electric sliding table comprises a servo motor, a sliding rail, a sliding block and a lead screw, the output shaft of the servo motor is fixed with the lead screw, the sliding block is slidably connected with the sliding rail, and the sliding block is threadedly connected with the lead screw.

[0015] The fixed frame is in F-shaped structure, the two transverse sections of the fixed frame are arranged on the two sides of the measuring cylinder, the transmitting end and the receiving end of the fiber optic detector are correspondingly arranged on the two transverse sections of the fixed frame, and the other side of the fixed frame is fixed with the upper end surface of the sliding block.

[0016] The servo motor is provided with an encoder, the encoder is connected with the input end of the PLC controller, and the output end of the PLC controller is connected with the servo motor through the driving unit.

[0017] The PLC controller controls the servo motor to realize the uniform speed movement of the sliding block from top to bottom, and then the fiber optic detector moves along the measuring cylinder from top to bottom at a uniform speed through the fixed frame, so that the automatic detection of the sedimentation ratio is realized.

[0018] Further, the cleaning module comprises a cleaning motor, a connecting rod and blades, the output end of the cleaning motor is connected with the connecting rod, a plurality of blades are arranged on the connecting rod, and the plurality of blades are arranged in the measuring cylinder.

[0019] The cleaning motor is electrically connected with the PLC controller through a driving unit.

[0020] After clean water is added into the measuring cylinder after the measuring cylinder is emptied, the connecting rod drives the blades to rotate after the cleaning motor is powered on, and then the water in the measuring cylinder rotates, the measuring cylinder is cleaned, and waste water is discharged, and the cleaning of the measuring cylinder is completed.

[0021] Further, the box body is further provided, the pipeline switching module, the sedimentation ratio detection module, the cleaning module and the control module are arranged in the box body, and are fixed with the inside of the box body.

[0022] The box body is arranged to protect the pipeline switching module, the sedimentation ratio detection module, the cleaning module and the control module. Dust outside the measuring cylinder and rain and snow weather affect the detection accuracy, and the box body is hinged with a cabinet door.

[0023] Further, the driving unit comprises a plurality of relays and a plurality of circuit breakers.

[0024] Further, the communication module comprises a wireless communication module, and the PLC controller is in communication connection with the upper computer through the wireless communication module.

[0025] Through the above technical scheme, the beneficial effects of the utility model are as follows:

[0026] 1. The pipeline switching module is arranged, the pipeline switching module is controlled by the PLC controller, the pipeline switching module can set two sampling points, the two sampling points are switched by the first electric three-way valve, and the servo water pump draws the sample to be measured of the sampling point into the measuring cylinder, so that the technical personnel do not need to take samples on site. The second electric three-way valve can send the sample to be measured of any one of the two sampling points into the collection container at the position of the pipeline switching module for collection, so that the sample to be measured is conveniently sent into the laboratory for detection, the technical personnel do not need to take samples on site, and the timeliness of the sample to be measured is good.

[0027] 2. The sedimentation ratio detection module is arranged, the sedimentation ratio detection module comprises a measuring cylinder, a fiber detector and a moving mechanism, the moving mechanism drives the fiber detector to move along the outside of the measuring cylinder from top to bottom, the sample to be measured (sewage) drawn from the sampling point is precipitated in the measuring cylinder, therefore, the signals output by the fiber detector are different due to the influence of impurities, so that the automatic detection of the sedimentation ratio is realized, and the standard and accurate detection of the sedimentation ratio is realized.

[0028] 3 The utility model discloses set up control module, and control module controls pipeline switching module, sedimentation ratio detection module and cleaning module respectively, realizes the switching of two sampling points, realizes the sampling of fixed time and fixed time detection, and the timeliness of detection data is good, and the detection efficiency is high. BRIEF DESCRIPTION OF DRAWINGS

[0029] Fig. 1 It is one of structural schematic diagram of the automatic detection sedimentation ratio device.

[0030] Fig. 2 It is two of structural schematic diagram of the automatic detection sedimentation ratio device.

[0031] Fig. 3 It is the circuit schematic diagram of the automatic detection sedimentation ratio device.

[0032] The serial number of drawing is: first electric three-way valve 1, second electric three-way valve 2, servo water pump 3, measuring cylinder 4, optical fiber detector 5, PLC controller 6, drive unit 7, HMI module 8, communication module 9, fixed rack 10, servo motor 11, cleaning motor 12, blade 13, box 14. DETAILED DESCRIPTION

[0033] Example 1

[0034] As Figs. 1-3 shown, an automatic detection sedimentation ratio device includes pipeline switching module, sedimentation ratio detection module, cleaning module and control module, the pipeline switching module includes first electric three-way valve 1, second electric three-way valve 2 and servo water pump 3, the upper end of first electric three-way valve 1 is connected with servo water pump 3, the lower end of first electric three-way valve 1 is connected with first sampling port, and the middle part of first electric three-way valve 1 is connected with second sampling port, the other side of servo water pump 3 is connected with second electric three-way valve 2, and the middle part of second electric three-way valve 2 is connected with drain port;

[0035] The sedimentation ratio detection module includes measuring cylinder 4, optical fiber detector 5 and moving mechanism, the bottom of measuring cylinder 4 is connected with the upper end of second electric three-way valve 2, and optical fiber detector 5 is arranged on the outside of measuring cylinder 4, the optical fiber detector 5 is fixedly connected with moving mechanism, the moving mechanism drives optical fiber detector 5 to move up and down along measuring cylinder 4, and the upper end of measuring cylinder 4 is provided with the cleaning module;

[0036] The control module comprises a PLC controller 6, a driving unit 7, an HMI module 8 and a communication module 9, the PLC controller 6 is connected with the first electric three-way valve 1, the second electric three-way valve 2, the servo water pump 3, the moving mechanism and the cleaning module through the driving unit 7, the input end of the PLC controller 6 is connected with the optical fiber detector 5, the PLC controller 6 is in communication connection with the HMI module 8, and the PLC controller 6 is connected with the upper computer through the communication module 9.

[0037] The measuring cylinder 4 is a cylindrical structure made of transparent material.

[0038] The optical fiber detector 5 comprises a transmitting end and a receiving end, and the transmitting end and the receiving end are correspondingly arranged on the two sides of the measuring cylinder 4.

[0039] The moving mechanism comprises a servo electric sliding table and a fixed frame 10, the servo electric sliding table comprises a servo motor 11, a sliding rail, a sliding block and a lead screw, the output shaft of the servo motor 11 is fixed with the lead screw, the sliding block is in sliding connection with the sliding rail, and the sliding block is in threaded connection with the lead screw.

[0040] The fixed frame 10 is in F-shaped structure, the two lateral sections of the fixed frame 10 are arranged on the two sides of the measuring cylinder 4, the transmitting end and the receiving end of the optical fiber detector 5 are correspondingly arranged on the two lateral sections of the fixed frame 10, and the other side of the fixed frame 10 is fixed with the upper end surface of the sliding block.

[0041] The servo motor 11 is provided with an encoder, the encoder is connected with the input end of the PLC controller 6, and the output end of the PLC controller 6 is connected with the servo motor 11 through the driving unit 7.

[0042] The cleaning module comprises a cleaning motor 12, a connecting rod and blades 13, the output end of the cleaning motor 12 is connected with the connecting rod, a plurality of blades 13 are arranged on the connecting rod, and the plurality of blades 13 are arranged in the measuring cylinder 4.

[0043] The cleaning motor 12 is electrically connected with the PLC controller 6 through the driving unit 7.

[0044] Further comprising a box body 14, the pipeline switching module, the settling ratio detection module, the cleaning module and the control module are arranged in the box body 14 and fixed in the box body 14, and the box body 14 is hinged with a cabinet door in the embodiment.

[0045] The driving unit 7 comprises a plurality of relays and a plurality of circuit breakers.

[0046] The communication module 9 comprises a wireless communication module, through which the PLC controller 6 is in communication connection with the upper computer. In this embodiment, the wireless communication module specifically adopts a GRM110 module. The GRM110 module is connected with the PLC controller 6 through an RS232 serial port. The PLC controller 6 and the HMI module 8 are connected through an RS232 serial port.

[0047] For the convenience of understanding as shown in the figure, the three interfaces of the first electric three-way valve 1 are A, B and C respectively, wherein the A port is connected with the first sampling point through a pipeline, the B port is connected with the second sampling point through a pipeline, and the A port of the first electric three-way valve 1 is open, the B port is closed, and the C port is open in the initial state. The three interfaces of the second electric three-way valve 2 are a, b and c respectively. In the initial state, the a port is open, the b port is closed, and the c port is open. The coils of the first electric three-way valve 1 and the second electric three-way valve 2 are connected with the PLC controller 6 through the normally open contact of the relay.

[0048] When taking water from the first sampling point, the PLC controller 6 controls the circuit breaker to work through the relay, and then makes the servo water pump 3 work by being electrified, and the sewage of the first sampling point enters the measuring cylinder 4 through the A port and the C port of the first electric three-way valve 1 and the a port and the c port of the second electric three-way valve 2. A one-way valve is arranged on the pipeline between the servo water pump 3 and the a port of the second electric three-way valve 2, and after the servo water pump 3 stops, the sewage in the measuring cylinder 4 will not flow back.

[0049] Then the PLC controller 6 controls the servo motor 11 to work by being electrified through the relay, the servo motor 11 drives the screw rod to rotate, the sliding block cooperates with the screw rod, the sliding block moves along the slide rail from top to bottom, the sliding block drives the fixed frame 10 to move, the fixed frame 10 is provided with the emitting end and the receiving end of the optical fiber detector 5, the optical fiber detector 5 detects the sewage in the measuring cylinder 4 from top to bottom, and transmits the detection data to the PLC controller 6, and then the settling ratio detection of the first sampling point is completed.

[0050] Finally, the PLC controller 6 controls the b port of the second electric three-way valve 2 to open and the a port to close, and the sewage in the measuring cylinder 4 is discharged from the b port of the second electric three-way valve 2 under the action of gravity.

[0051] When taking water from the second sampling point, the PLC controller controls the coil of the first electric three-way valve 1 to be electrified, the A port of the first electric three-way valve 1 is closed, and the B port is open, the PLC controller 6 controls the circuit breaker to work through the relay, and then makes the servo water pump 3 work by being electrified, and the sewage of the second sampling point enters the measuring cylinder 4 through the B port and the C port of the first electric three-way valve 1 and the a port and the c port of the second electric three-way valve 2. The measurement process is consistent with the detection of the first sampling point and will not be described here.

[0052] When cleaning, the measuring cylinder 4 is emptied. And pour clean water from the upper end of the measuring cylinder 4, select cleaning through the HMI module 8, the PLC controller 6 makes the circuit breaker energized through the relay, and then the cleaning motor 12 is powered on. The cleaning motor 12 drives the connecting rod and the blade 13 to rotate to clean the inner wall of the measuring cylinder 4. When the cleaning is finished, the waste water is discharged from the measuring cylinder 4.

[0053] When sampling, select sampling through the HMI module 8, set the collection container at the b port position of the second electric three-way valve 2, and send an instruction to the PLC controller 6 through the HMI module 8 to select the first sampling point and the second sampling point through the first electric three-way valve 1. Then the sewage enters the measuring cylinder 4, and then the sewage flows into the collection container through the b port of the second electric three-way valve 2.

[0054] The above-described embodiments are only preferred embodiments of the present application, and are not intended to limit the scope of the present application. Therefore, equivalent changes or modifications made in accordance with the structure, features and principles described in the patent range of the present application should be included in the patent range of the present application.

Claims

1. An apparatus for automatically detecting a sedimentation ratio, characterized by comprising: The pipeline switching module, the sedimentation ratio detection module, the cleaning module and the control module are included, the pipeline switching module includes a first electric three-way valve (1), a second electric three-way valve (2) and a servo water pump (3), the upper end of the first electric three-way valve (1) is connected with the servo water pump (3), the lower end of the first electric three-way valve (1) is connected with a first sampling port, the middle part of the first electric three-way valve (1) is connected with a second sampling port, the other side of the servo water pump (3) is connected with the second electric three-way valve (2), and the middle part of the second electric three-way valve (2) is connected with a drain port; The sedimentation ratio detection module includes a measuring cylinder (4), a fiber optic detector (5) and a moving mechanism, the bottom of the measuring cylinder (4) is connected with the upper end of the second electric three-way valve (2), the fiber optic detector (5) is arranged on the outer side of the measuring cylinder (4), the fiber optic detector (5) is fixedly connected with the moving mechanism, the moving mechanism drives the fiber optic detector (5) to move up and down along the measuring cylinder (4), and the upper end of the measuring cylinder (4) is provided with the cleaning module; The control module includes a PLC controller (6), a driving unit (7), an HMI module (8) and a communication module (9), the PLC controller (6) is connected with the first electric three-way valve (1), the second electric three-way valve (2), the servo water pump (3), the moving mechanism and the cleaning module through the driving unit (7), the input end of the PLC controller (6) is connected with the fiber optic detector (5), the PLC controller (6) is in communication connection with the HMI module (8), and the PLC controller (6) is connected with an upper computer through the communication module (9).

2. The apparatus of claim 1, wherein, The measuring cylinder (4) is a cylindrical structure made of transparent material; The fiber optic detector (5) includes a transmitting end and a receiving end, and the transmitting end and the receiving end are correspondingly arranged on both sides of the measuring cylinder (4).

3. The apparatus of claim 2, wherein, The moving mechanism includes a servo electric sliding table and a fixed frame (10), the servo electric sliding table includes a servo motor (11), a sliding rail, a sliding block and a lead screw, the output shaft of the servo motor (11) is fixed with the lead screw, the sliding block is slidably connected with the sliding rail, and the sliding block is threadedly connected with the lead screw; The fixed frame (10) is in F-shaped structure, two lateral sections of the fixed frame (10) are arranged on both sides of the measuring cylinder (4), the transmitting end and the receiving end of the fiber optic detector (5) are correspondingly arranged on the two lateral sections of the fixed frame (10), and the other side of the fixed frame (10) is fixed with the upper end surface of the sliding block; The servo motor (11) is provided with an encoder, the encoder is connected with the input end of the PLC controller (6), and the output end of the PLC controller (6) is connected with the servo motor (11) through the driving unit (7).

4. The apparatus of claim 1, wherein, The cleaning module includes a cleaning motor (12), a connecting rod and blades (13), the output end of the cleaning motor (12) is connected with the connecting rod, a plurality of blades (13) are arranged on the connecting rod, and the plurality of blades (13) are arranged in the measuring cylinder (4); The cleaning motor (12) is electrically connected with the PLC controller (6) through the driving unit (7).

5. The apparatus of claim 1, wherein, The pipeline switching module, the sedimentation ratio detection module, the cleaning module and the control module are arranged in a box (14) and fixed to the inside of the box (14).

6. The apparatus of claim 1, wherein, The driving unit (7) comprises a plurality of relays and a plurality of circuit breakers.

7. The apparatus of claim 1, wherein: The communication module (9) comprises a wireless communication module, and the PLC controller (6) is in communication connection with the upper computer through the wireless communication module.

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