SV30 automatic detection device

Abstract

The utility model relates to the technical field of sewage treatment detection devices, in particular to an SV30 automatic detection device which comprises a measuring cylinder and a measuring grating which are mounted on a base, an emitter and a light receiver of the measuring grating are respectively positioned on two sides of the measuring cylinder, a top cover is mounted at the top of the measuring cylinder, and a through hole is formed in the center of the top cover. A flushing nozzle is installed in the through hole and communicated with a tap water source through a flushing valve, the bottom of the measuring cylinder is communicated with a liquid inlet and outlet pipe, and a peristaltic pump is installed on the liquid inlet and outlet pipe. The system further comprises a vision measuring device, the vision measuring device is installed on one side of the measuring cylinder, the vision measuring device, the measuring grating, the flushing valve and the peristaltic pump are in signal connection with a central processing unit, and the central processing unit is connected with a human-computer interaction interface. According to the utility model, random errors of manual sampling measurement are reduced, real-time on-line measurement and abnormal alarm are realized, an operator can conveniently and rapidly make an emergency reaction, and stable operation of a biochemical system of a sewage plant is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to sewage treatment detection device technical field especially, it relates to a SV30 automatic detection device. BACKGROUND

[0002] Sewage treatment plant aeration biological pool activated sludge plays a vital role in the sewage treatment process, SV30 is the volume percentage of sludge after the activated sludge is placed in the measuring cylinder and settled for 30 minutes. Experimental sample collection in clean measuring cylinder, wash three times with the water sample to be collected before sampling, then collect representative water 100ml, stand for 30 minutes, read the volume of sludge after precipitation, calculate sludge settling ratio SV30. But SV30 index determination currently mainly detects the mode based on manual measurement, not only consumes manpower and material resources, and measurement error varies from person to person, test data is not accurate, and cannot automatically drain, increases the workload. UTILITY MODEL CONTENT

[0003] The utility model solves the technical problem that a SV30 automatic detection device is provided, which has small measurement error, does not require manual intervention, and can automatically add sample, automatically discharge, and automatically measure.

[0004] To solve the above technical problems, the technical scheme of the utility model is as follows: a measuring cylinder and a measuring grating are installed on a base, an emitter and a light receiver of the measuring grating are located on both sides of the measuring cylinder, are separated from each other, and are placed opposite to each other, a top cover is installed at the top of the measuring cylinder, a through hole is formed in the center of the top cover, a flushing nozzle is installed in the through hole, the flushing nozzle is connected to a tap water source through a flushing valve, a liquid inlet and outlet pipe is connected to the bottom of the measuring cylinder, and a peristaltic pump is installed on the liquid inlet and outlet pipe; a visual measurement device is further included, the visual measurement device is installed on one side of the measuring cylinder, the visual measurement device, the measuring grating, the flushing valve, and the peristaltic pump are respectively signal connected to a central processing unit, and the central processing unit is connected to a man-machine interaction interface.

[0005] As a preferred technical scheme, the visual measurement device is a digital camera, the digital camera is connected to a visual host computer, and the visual host computer is connected to the central processing unit.

[0006] As a preferred technical scheme, the bottom end of the measuring grating is lower than the bottom end of the measuring cylinder, and the top end of the measuring grating is higher than the maximum range of the measuring cylinder.

[0007] As a preferred technical scheme, the emitter and the light receiver are equidistant from the measuring cylinder.

[0008] As a preferred technical scheme, the flushing nozzle is a rotary lifting flushing nozzle, which can rotate to flush the inner wall of the measuring cylinder and can move up and down along the axial direction of the measuring cylinder.

[0009] Due to the adoption of the above technical scheme, the SV30 automatic detection device comprises a measuring cylinder mounted on a base and a measuring grating, an emitter and a light receiver of the measuring grating are respectively located on two sides of the measuring cylinder, are separated from each other and are oppositely arranged, a top cover is mounted at the top of the measuring cylinder, a through hole is formed in the center of the top cover, a flushing nozzle is mounted in the through hole, the flushing nozzle is communicated with a tap water source through a flushing valve, a liquid inlet and outlet pipe is communicated with the bottom of the measuring cylinder, and a peristaltic pump is mounted on the liquid inlet and outlet pipe; the device further comprises a visual measurement device mounted on one side of the measuring cylinder, the visual measurement device, the measuring grating, the flushing valve and the peristaltic pump are respectively signal connected with a central processing unit, and the central processing unit is connected with a man-machine interaction interface; the device has the beneficial effects that the measuring grating and the visual measurement device are used to dynamically measure and analyze the sludge settling process in two modes of photoelectric sensor and video analysis. The photoelectric sensor measurement is performed by using a special measuring grating, the emitter and the receiver generate an array of light rays along the length direction at an interval, and a controller is used to measure and calculate the length of the light curtain by scanning. By studying the change of the signal form of the photoelectric sensor at the critical interface between the sludge and the sewage, a reasonable value is obtained, the height of the sludge is measured, and the sludge settling ratio SV30 is calculated. The video analysis is performed by using a digital camera to shoot the sludge-water mixture in the measuring cylinder, studying the change of the image form at the critical interface between the sludge and the sewage, obtaining a reasonable value, and calculating the height of the sludge by using a software algorithm. The device replaces manual measurement of the sludge settling ratio SV30, greatly reduces the workload of workers, reduces random errors of manual sampling measurement, realizes real-time online measurement, issues an alarm in case of an abnormality, is convenient for operation personnel to quickly make emergency response, ensures stable operation of a biochemical system of a sewage plant, and can automatically control corresponding equipment in combination with other process parameters, and improves the degree of automation of the sewage plant. BRIEF DESCRIPTION OF DRAWINGS

[0010] The following drawings are only intended to schematically illustrate and explain the present application, and do not limit the scope of the present application. Among them:

[0011] Figure 1 is a structural principle schematic view of the SV30 automatic detection device of the present application.

[0012] In the figure: 1-measuring cylinder; 2-emitter; 3-light receiver; 4-top cover; 5-flushing nozzle; 6-flushing valve; 7-liquid inlet and outlet pipe; 8-peristaltic pump; 9-central processing unit; 10-man-machine interaction interface; 11-visual host; 12-digital camera. DETAILED DESCRIPTION

[0013] The utility model is further described below in conjunction with the drawings and examples. In the following detailed description, only certain exemplary embodiments of the utility model are described by way of illustration. It is needless to say that those skilled in the art can realize that the described embodiments can be modified in various ways without departing from the spirit and scope of the utility model. Therefore, the drawings and description are illustrative in nature and are not used to limit the protection scope of the claims.

[0014] As Figure 1 The utility model discloses a metering cylinder 1 and the measuring grating are installed on the base, and the emitter 2 and the light receiver 3 of the measuring grating are located at both sides of the metering cylinder 1 respectively, are separated and are opposite to each other, the top of the metering cylinder 1 is equipped with the top cover 4, the center of the top cover 4 is equipped with the through -hole, and the flush nozzle 5 is installed in the through -hole, the flush nozzle 5 is connected with the water source through the flush valve 6, the bottom of the metering cylinder 1 is connected with the liquid inlet and outlet pipe 7, and the peristaltic pump 8 is installed on the liquid inlet and outlet pipe 7, still include visual measuring device, visual measuring device installs at one side of metering cylinder 1, visual measuring device, measuring grating, flush valve 6 and peristaltic pump 8 are signal connected with central processing unit 9 respectively, and central processing unit 9 is connected with man -machine interface 10, utilizes measuring grating and visual measuring device, respectively from photoelectric sensor and video analysis two ways dynamic measurement analysis sludge settlement process. Photoelectric sensor measurement is to adopt special measuring grating, and the emitter 2 and the receiver generate light array along the length direction interval, and the length of the light curtain is measured by the controller through the scanning mode. By researching the change of the photoelectric sensor in the critical interface signal form of sludge and sewage, the height of sludge is measured by reasonable value, and the sludge settling ratio SV30 is calculated. Video analysis is to use digital camera 12 to shoot the sludge and water mixture in the metering cylinder 1, researches the change of the image in the critical interface form of sludge and sewage, reasonably selects the value, and realizes the calculation of sludge height through software algorithm. The utility model replaces manual measurement of sludge settling ratio SV30, greatly reduces the workload of workers, reduces the random error of manual sampling measurement, realizes real -time online measurement, and the alarm is abnormal, and it is convenient for operating personnel to make emergency response quickly, ensures the stable operation of the biochemical system of the sewage plant, and can combine other process parameters to control the corresponding equipment automatically, improves the degree of automation of the sewage plant.

[0015] As Figure 1 As shown in the figure, the visual measuring device is a digital camera 12, and the digital camera 12 is connected with a visual host 11, and the visual host 11 is connected with a central processing unit 9. The digital camera 12 is used for taking pictures of the metering cylinder 1, and recording the height of the sludge.

[0016] As Figure 1As shown, the bottom end of the measuring grating is lower than the bottom end of the measuring cylinder 1, and the top end of the measuring grating is higher than the maximum range of the measuring cylinder 1. The height and installation position of the measuring grating are sufficient to ensure the accurate measurement of the sludge height in the measuring cylinder 1.

[0017] As shown, the transmitter 2 and the light receiver 3 are equidistant from the measuring cylinder 1. To ensure the accuracy of the measurement results, the distance between the transmitter 2 and the light receiver 3 from the measuring cylinder 1 is adjusted according to the measurement requirements. Figure 1

[0018] The flushing nozzle 5 is a rotary lifting flushing nozzle 5, which can not only rotate to flush the inner wall of the measuring cylinder 1, but also can be displaced up and down along the axis of the measuring cylinder 1. The flushing nozzle 5 is a prior art, and as long as it can realize rotary flushing and lifting flushing, it has no requirement on specific model.

[0019] The working process of the utility model is as follows:

[0020] Step 1: open the flushing valve 6 through the man-machine interface 10, and the flushing nozzle 5 works to flush the entire measuring cylinder 1 with tap water, and then open the peristaltic pump 8 to discharge the cleaning water, and initially flush the measuring cylinder 1 and the liquid inlet and outlet pipe 7;

[0021] Step 2: close the flushing valve 6, and wait for the sewage in the liquid inlet and outlet pipe 7 to be discharged;

[0022] Step 3: after flushing, start the peristaltic pump 8 to begin to detect the water sample, first, three times of liquid inlet to rinse the measuring cylinder 1;

[0023] Step 4: then, according to the preset time, carry out feeding, stop liquid inlet after feeding is completed, and enter the sedimentation program;

[0024] Step 5: after 30 minutes of sedimentation time, the central processing unit 9 controls the measuring grating to start measuring the sludge height, and the visual measuring device also starts to work, the digital camera 12 takes a photo of the measuring cylinder 1 to measure the sludge height, and the visual host 11 calculates the sludge sedimentation height according to the photographed photo and transmits the result into the central processing unit 9, and the measuring grating also transmits the calculation result into the central processing unit 9.

[0025] Note: the number of measurements can be adjusted, and the default value is 2 times, and the average value of the two measurement results is taken.

[0026] Step 6: after the measurement is completed, the man-machine interface 10 displays the current two SV30 values, and then enters the emptying program, and the central processing unit 9 opens the peristaltic pump 8 to completely discharge the detection liquid;

[0027] ​Step 7: after emptying, enter the cleaning sequence again, the number of cleaning times can be adjusted, and after cleaning, the system enters the standby state.

[0028] The peristaltic pump 8 in the utility model is used for water sample collection and discharging the water sample into the measuring cylinder 1, and the measuring is completed after emptying; the central processing unit 9 is used as the operation and control core of the computer system, and is used for information processing and program running; the visual host 11 is used for loading visual algorithms, and the visual measurement device is analyzed and calculated after taking a photo; the man-machine interface 10 is used for interaction and information exchange between the system and the user.

[0029] The utility model online automatic sampling automatic measurement, replace manual measurement sludge settling ratio SV30, greatly reduce the worker's workload, reduce the random error of manual sampling measurement, real-time online measurement, abnormal alarm, it is convenient for operation personnel to make emergency response quickly, ensure that the biochemical system of sewage plant is stably operated, and can combine other process parameters to control the corresponding equipment automatically, improve the degree of automation of sewage plant.

[0030] The technical features related to software and circuit program in the application belong to the prior art, and the essence of the technical scheme of the application is the improvement of the composition and connection relationship of the hardware part, and does not involve the improvement of the software program or circuit structure itself.

[0031] In the description of the utility model, it should be understood that the orientation or position relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer" and the like is the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation on the utility model.

[0032] The basic principle, main features and advantages of the utility model are shown and described above. It should be understood by those skilled in the art that the utility model is not limited by the above-mentioned embodiments, and the above-mentioned embodiments and descriptions in the specification are only to illustrate the principle of the utility model, and various changes and improvements can be made to the utility model without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the utility model claimed. The scope of protection of the utility model is defined by the appended claims and their equivalents.

Claims

1. An automatic detection device for SV30, characterized by: The utility model provides a kind of liquid measuring device, including the metering cylinder (1) and the measuring grating of installation on pedestal, the emitter (2) and the light receiver (3) of the measuring grating are located respectively at both sides of the metering cylinder (1), separate and opposite each other, the top of the metering cylinder (1) is equipped with top cover (4), the center of the top cover (4) is equipped with through-hole, the flush nozzle (5) is installed in the through-hole, the flush nozzle (5) is communicated with tap water source by flush valve (6), the bottom of the metering cylinder (1) is communicated with inlet and outlet pipe (7), peristaltic pump (8) is installed on the inlet and outlet pipe (7);It further includes visual measuring device, the visual measuring device is installed in one side of the metering cylinder (1), the visual measuring device, the measuring grating, the flush valve (6) and the peristaltic pump (8) are respectively signal connected with central processing unit (9), the central processing unit (9) is connected with man-machine interface (10).

2. The SV30 auto-detection device of claim 1, wherein: The visual measuring device is digital camera (12), the digital camera (12) is connected with visual host computer (11), and the visual host computer (11) is connected with the central processing unit (9).

3. The SV30 auto-detection device of claim 1, wherein: The bottom end of the measuring grating is lower than the bottom end of the metering cylinder (1), and the top end of the measuring grating is higher than the maximum range of the metering cylinder (1).

4. The SV30 auto-detection apparatus of claim 1, wherein: The emitter (2) and the light receiver (3) are equal in distance from the metering cylinder (1).

5. The SV30 auto-detection apparatus of any one of claims 1 to 4, wherein: The flush nozzle (5) is a rotary lifting flush nozzle (5), which can not only rotate to flush the inner wall of the metering cylinder (1) for one round, but also can displace up and down along the axial direction of the metering cylinder (1).

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