Automatic mud level detection device

Abstract

The utility model relates to the technical field of sewage treatment detection equipment, in particular to an automatic mud level detection device which comprises a sensor mounting seat, a grating matrix sensor is fixedly mounted on the lower portion of the sensor mounting seat, and the grating matrix sensor comprises an emitter and a receiver which are oppositely arranged at intervals. An electric telescopic rod is installed in the center of the sensor installation base in a penetrating mode and extends to the position between the transmitter and the receiver, a cleaning device is installed at the bottom of the electric telescopic rod and used for cleaning the opposite faces of the transmitter and the receiver, and the grating matrix sensor and the electric telescopic rod are in signal connection with a central processing unit. The central processing unit is connected with a human-computer interaction interface; the length of the light curtain is measured and calculated through a central processing unit in a scanning mode, and the height of the sludge is measured through reasonable value taking according to the change of the signal form of the grating matrix sensor on the sludge and sewage critical interface; the stability of a sewage treatment system is improved, and the automation degree of sewage treatment is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of wastewater treatment testing equipment, and in particular to an automatic sludge level detection device. Background Technology

[0002] Sludge is a muddy substance containing various organic and inorganic materials, produced during wastewater treatment. It is a crucial component in various wastewater treatment processes. Sludge plays a vital role in water treatment, purifying water, recovering resources, and protecting the environment through processes such as adsorption, anaerobic digestion, and aerobic digestion.

[0003] For wastewater treatment, sludge treatment is crucial. Currently, the commonly used measurement method is to use ultrasound or radar to measure the interface between the sludge and wastewater, thereby calculating the sludge depth. However, the measurement stability of sludge depth using ultrasound or radar is greatly affected by the sludge concentration, type, and composition. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide an automatic sludge level detection device that can perform online real-time measurement, has high measurement accuracy and strong measurement stability, can realize sludge level alarm and abnormal alarm, and improve the automation level of sewage treatment plants.

[0005] To solve the above-mentioned technical problems, the technical solution of this utility model is: an automatic mud level detection device, including a sensor mounting base, a grating matrix sensor fixedly mounted on the lower part of the sensor mounting base, the grating matrix sensor including a transmitter and a receiver arranged at relative intervals, an electric telescopic rod installed through the center of the sensor mounting base, the electric telescopic rod extending between the transmitter and the receiver, a cleaning device installed at the bottom of the electric telescopic rod, the cleaning device being used to clean the opposite surfaces of the transmitter and the receiver, the grating matrix sensor and the electric telescopic rod being respectively signal-connected to a central processing unit, the central processing unit being connected to a human-machine interface.

[0006] As a preferred technical solution, the sensor mounting base is a rectangular plate, and the transmitter and the receiver are located at opposite ends of the sensor mounting base.

[0007] As a preferred technical solution, a transmission protection tube is fixedly installed above the sensor mounting base, and a protective cover is fixedly installed above the transmission protection tube. The electric telescopic rod includes a fixed rod and a movable rod. The fixed rod is located inside the protective cover, and the movable rod extends from the transmission protection tube to the space between the transmitter and the receiver. The fixed rod drives and connects to the movable rod.

[0008] As a preferred technical solution, the movable rod is detachably mounted on the fixed rod, and the length of the movable rod is greater than the height of the grating matrix sensor.

[0009] As a preferred technical solution, the cleaning device includes a scraper mounting base fixedly installed at the lower end of the moving rod. Scrapers are detachably installed at both ends of the scraper mounting base. The two scrapers are tightly fitted to the outer walls of the transmitter and the receiver, respectively. The stroke of the moving rod driving the scrapers to move up and down is greater than the effective height of the grating matrix.

[0010] As a preferred technical solution, the transmitter and the receiver are covered with a transparent square tube, and the transparent square tube is covered with a protective groove tube. The opposite surfaces of the two protective groove tubes are provided with a detection elongated hole that runs through the entire length of the protective groove tube. The width of the detection elongated hole is greater than the effective width of the grating matrix of the transmitter and the receiver.

[0011] As a preferred technical solution, the width of the detection elongated hole is adapted to the width of the scraper.

[0012] Due to the adoption of the above technical solution, the automatic sludge level detection device includes a sensor mounting base. A grating matrix sensor is fixedly installed at the lower part of the sensor mounting base. The grating matrix sensor includes a transmitter and a receiver arranged at relative intervals. An electric telescopic rod is installed through the center of the sensor mounting base, extending between the transmitter and the receiver. A cleaning device is installed at the bottom of the electric telescopic rod for cleaning the opposite surfaces of the transmitter and receiver. The grating matrix sensor and the electric telescopic rod are respectively signal-connected to a central processing unit, which is connected to a human-machine interface. The beneficial effects of this utility model are: online real-time dynamic measurement and analysis of sludge depth using a grating matrix sensor. It automatically cleans the sludge and biofilm on the surface of the grating matrix sensor. The transmitter and receiver generate a light array at fixed intervals along the length direction. The central processing unit measures and calculates the length of the light curtain by scanning. By observing the changes in the signal morphology of the grating matrix sensor at the sludge-sewage interface, and taking reasonable values, the height of the sludge is measured. It can realize sludge level alarm and abnormal alarm, which facilitates operators to make quick emergency response and ensure the stable operation of the sewage treatment process. At the same time, it can be combined with other process parameters to automatically control the corresponding equipment, which helps to improve the stability of the sewage treatment system and enhance the automation level of sewage treatment. Attached Figure Description

[0013] The following figures are intended only to illustrate and explain the present invention and do not limit the scope of the present invention. Wherein:

[0014] Figure 1 This is a schematic diagram illustrating the structural principle of the automatic mud level detection device of this utility model;

[0015] Figure 2 This is a cross-sectional view of the grating matrix sensor of this utility model.

[0016] In the diagram: 1-Sensor mounting base; 2-Transmitter; 3-Receiver; 4-Central processing unit; 5-Human-machine interface; 6-Transmission protection tube; 7-Protective cover; 8-Fixing rod; 9-Moving rod; 10-Scraper mounting base; 11-Scraper; 12-Transparent square tube; 13-Protective trough tube; 14-Elongated hole; 15-Sludge. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments. In the following detailed description, only certain exemplary embodiments of the present invention are described by way of illustration. Undoubtedly, those skilled in the art will recognize that various modifications can be made to the described embodiments without departing from the spirit and scope of the present invention. Therefore, the drawings and description are illustrative in nature and not intended to limit the scope of the claims.

[0018] like Figure 1 and Figure 2As shown, the automatic sludge level detection device includes a sensor mounting base 1. A grating matrix sensor is fixedly mounted on the lower part of the sensor mounting base 1. The grating matrix sensor includes a transmitter 2 and a receiver 3 arranged at relative intervals. An electric telescopic rod is installed through the center of the sensor mounting base 1, extending between the transmitter 2 and the receiver 3. A cleaning device is installed at the bottom of the electric telescopic rod for cleaning the opposite surfaces of the transmitter 2 and the receiver 3. The grating matrix sensor and the electric telescopic rod are respectively connected to a central processing unit 4. The central processing unit 4 is connected to a human-machine interface 5. The central processing unit 4 is the computing and control core of the computer system, used for grating matrix sensor signal acquisition, data processing, operation control, and data communication. The human-machine interface 5 is used for interaction and information exchange between the measurement system and the user. The central processing unit 4 controls the measurement frequency of the grating matrix sensor, and uses the grating matrix sensor to dynamically measure and analyze the sludge depth 15 online in real time. The central processing unit 4 controls the cleaning device to clean the surface of the grating matrix sensor at regular intervals, automatically cleaning the sludge 15 and biofilm on the surface of the grating matrix sensor, and recording the number of cleanings for periodic replacement of consumables of the cleaning device. Transmitter 2 and receiver 3 generate a light array at fixed intervals along the length direction. The central processing unit 4 measures and calculates the length of the light curtain through scanning. By analyzing the signal morphology changes at the critical interface between sludge 15 and wastewater using a grating matrix sensor, and taking appropriate values, the height of sludge 15 is measured. This enables sludge level alarms and abnormal alarms, facilitating rapid emergency response by operators and ensuring stable operation of the wastewater treatment process. Furthermore, it can be combined with other process parameters for automatic control of relevant equipment, improving the stability of the wastewater treatment system and enhancing its automation level.

[0019] like Figure 2 As shown, the sensor mounting base 1 is a rectangular plate, with the transmitter 2 and receiver 3 located at opposite ends. The transmitter 2 emits a grating signal, and the receiver 3 receives it. During measurement, sludge 15 and water are present between them. The transmitter 2 and receiver 3 generate a light array at fixed intervals along their length. The central processing unit 4 measures the length of the light curtain by scanning. By studying the changes in the signal morphology of the grating matrix sensor at the critical interface between sludge 15 and wastewater, and by selecting appropriate values, the height of the sludge 15 is measured. The data can be transmitted to the human-machine interface 5 for display, analysis, control, recording, and storage, and can also be remotely viewed and monitored via a mobile phone.

[0020] like Figure 1 and Figure 2As shown, a transmission protection tube 6 is fixedly installed above the sensor mounting base 1, and a protective cover 7 is fixedly installed above the transmission protection tube 6. The electric telescopic rod includes a fixed rod 8 and a moving rod 9. The fixed rod 8 is located inside the protective cover 7, and the moving rod 9 extends from the transmission protection tube 6 to the space between the transmitter 2 and the receiver 3. The fixed rod 8 drives and connects to the moving rod 9. The transmission protection tube 6 fixes the protective cover 7 and the grating matrix sensor, and serves to protect the moving rod 9 of the electric telescopic rod. The protective cover 7 protects the fixed rod 8 and the motor of the electric telescopic rod.

[0021] like Figure 1 As shown, the movable rod 9 is detachably mounted on the fixed rod 8, and the length of the movable rod 9 is greater than the height of the grating matrix sensor. The movable rod 9 is used to push the scraper mounting seat 10 up and down, and its length can be adjusted according to the size of the sewage treatment equipment. The detachable installation facilitates replacement.

[0022] like Figure 1 As shown, the cleaning device includes a scraper mounting base 10 fixedly installed at the lower end of the moving rod 9. Scrapers 11 are detachably mounted at both ends of the scraper mounting base 10. The two scrapers 11 are tightly fitted against the outer walls of the transmitter 2 and receiver 3, respectively. The stroke of the moving rod 9 driving the scrapers 11 to move up and down is greater than the effective height of the grating matrix. The scrapers 11 are used to clean the sludge 15 on the transparent square tube 12, ensuring that the transmitter 2 and receiver 3 can transmit and receive signals normally, guaranteeing stability and measurement accuracy.

[0023] like Figure 1 and Figure 2 As shown, the transmitter 2 and receiver 3 are surrounded by a transparent square tube 12, and the transparent square tube 12 is surrounded by a protective groove tube 13. A detection elongated hole 14, extending through the entire length of the protective groove tube 13, is opened on the opposite sides of the two protective groove tubes 13. The width of the detection elongated hole 14 is greater than the effective width of the grating matrix of the transmitter 2 and receiver 3. The transparent square tube 12 provides all-around sealing protection for the transmitter 2 and receiver 3, including their sides and bottom. The protective groove tube 13 is a stainless steel square groove used to protect the transparent square tube 12. A signal line protection tube 16 is also installed between the protective cover 7 and the grating matrix sensor to protect the signal line.

[0024] The width of the detection elongated hole 14 is matched with the width of the scraper 11. When the scraper 11 moves up and down to clean, it can move smoothly within the detection elongated hole 14 and clean the exposed transparent square tube 12 of the detection elongated hole 14, ensuring the normal use of the grating matrix sensor.

[0025] The testing process for this utility model is as follows:

[0026] Insert the grating matrix sensor into the sludge 15. Set the measurement and cleaning frequencies according to the human-machine interface 5. Activate the transmitter 2 and receiver 3 of the grating matrix sensor to receive the light signal and transmit it to the central processing unit 4. The central processing unit 4 determines the interface between the sludge 15 and the wastewater by calculating the light signal intensity, and then calculates the depth of the sludge 15. An alarm sounds when the scraper 11 reaches the set number of uses, and the scraper 11 consumable is replaced.

[0027] The technical features of the software and circuit programs involved in this application are existing technologies. The essence of the technical solution of this application is to improve the composition and connection relationship of the hardware part, and does not involve the improvement of the software program or circuit structure itself.

[0028] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0029] 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 illustrative of the principles of this 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 claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An automatic mud level detection device, characterized in that: The system includes a sensor mounting base (1), on which a grating matrix sensor is fixedly mounted. The grating matrix sensor includes a transmitter (2) and a receiver (3) arranged at relative intervals. An electric telescopic rod is installed through the center of the sensor mounting base (1) and extends between the transmitter (2) and the receiver (3). A cleaning device is installed at the bottom of the electric telescopic rod for cleaning the opposite surfaces of the transmitter (2) and the receiver (3). The grating matrix sensor and the electric telescopic rod are respectively connected to a central processing unit (4), which is connected to a human-machine interface (5).

2. The automatic mud level detection device as described in claim 1, characterized in that: The sensor mounting base (1) is a rectangular plate, and the transmitter (2) and the receiver (3) are located at opposite ends of the sensor mounting base (1).

3. The automatic mud level detection device as described in claim 1, characterized in that: A transmission protection tube (6) is fixedly installed above the sensor mounting base (1), and a protective cover (7) is fixedly installed above the transmission protection tube (6). The electric telescopic rod includes a fixed rod (8) and a moving rod (9). The fixed rod (8) is located inside the protective cover (7), and the moving rod (9) extends from the transmission protection tube (6) to the space between the transmitter (2) and the receiver (3). The fixed rod (8) drives the moving rod (9).

4. The automatic mud level detection device as described in claim 3, characterized in that: The movable rod (9) is detachably mounted on the fixed rod (8), and the length of the movable rod (9) is greater than the height of the grating matrix sensor.

5. The automatic mud level detection device as described in claim 3, characterized in that: The cleaning device includes a scraper mounting base (10) fixedly installed at the lower end of the moving rod (9). Scrapers (11) are detachably installed at both ends of the scraper mounting base (10). The two scrapers (11) are tightly attached to the outer walls of the transmitter (2) and the receiver (3), respectively. The stroke of the moving rod (9) driving the scraper (11) to move up and down is greater than the effective height of the grating matrix.

6. The automatic mud level detection device as described in claim 5, characterized in that: The transmitter (2) and the receiver (3) are covered with a transparent square tube (12), and the transparent square tube (12) is covered with a protective groove tube (13). The two protective groove tubes (13) have detection holes (14) that extend through the entire length of the protective groove tube (13) on their opposite sides. The width of the detection holes (14) is greater than the effective width of the grating matrix of the transmitter (2) and the receiver (3).

7. The automatic mud level detection device as described in claim 6, characterized in that: The width of the detection hole (14) is adapted to the width of the scraper (11).

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