Sewage sludge storage tank with automatic sludge discharge structure

Abstract

The utility model belongs to the technical field of sewage treatment, and particularly discloses a sewage sludge storage tank with an automatic sludge discharge structure, which comprises a sludge storage tank body, a sludge interface instrument, an upper computer and an output pipe, the sludge interface instrument comprises an outer operation instrument, an ultrasonic sensing detection probe and a transmission lead, the upper computer and the outer operation instrument are mounted on the outer wall of the sludge storage tank body, and the transmission lead is connected with the upper computer. The ultrasonic sensing detection probe is located in the sludge storage tank body, the ultrasonic sensing detection probe is in signal transmission connection with the outer operation instrument through a transmission wire, and the outer operation instrument is connected with the upper computer; the output pipe is mounted on the lower side of the side wall of the sludge storage tank body and communicated with the sludge storage tank body, and an electric control main valve is arranged on a pipeline of the output pipe. During use, the sludge sedimentation condition in the sludge storage tank body is detected based on the sludge interface instrument, detection information is output to the upper computer, whether the electric control main valve on the output pipe is opened or not is judged through the upper computer, automatic detection and discharge control are achieved in the whole process, the efficiency is high, and the treatment mode is accurate.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, specifically to a wastewater sludge storage tank with an automatic sludge discharge structure. Background Technology

[0002] Municipal wastewater is usually collected at wastewater treatment plants, which typically use biological treatment. Activated sludge is used in biological treatment, and excess sludge is pumped into a sludge storage tank (the wastewater sludge storage tank in this scheme) via a sludge pump. The sludge in the storage tank undergoes sedimentation, causing the sludge and wastewater to separate into layers. The sludge and wastewater are then discharged separately, and the discharged sludge undergoes subsequent treatments such as dewatering.

[0003] like Figure 3 The diagram shows a structural schematic of a commonly used sludge storage tank 1. The sludge storage tank 1 has a longitudinal outlet pipe 16 and multiple sampling pipes 17 connecting the outlet pipe 16 and the sludge storage tank 1. An electrically controlled switch valve 18 is installed on the sampling pipe 17, and the opening and closing of the electrically controlled switch valve 18 is controlled by a switch box 19.

[0004] During the sludge settling process, the electrically controlled valves 18 are opened sequentially from top to bottom. For example, opening the topmost electrically controlled valve 18 causes the topmost sampling pipe 17 to discharge the sludge (sewage) at the corresponding location in the sludge storage tank 1. If the discharged sludge (sewage) is clear, it indicates that settling at this location is complete. Then, the next electrically controlled valve 18 is opened to detect the settling of sludge (sewage) at the depth corresponding to the sampling pipe 17 in the sludge storage tank 1. If the discharged sludge (sewage) is turbid, the settling at this depth is not yet complete. After settling is complete, the lower layer of settled sludge is discharged through the discharge pipe. After discharge, the remaining sewage is either discharged or pumped out from the top.

[0005] The above-mentioned inspection methods are inefficient and require frequent manual judgment, resulting in a long overall sludge treatment cycle. Utility Model Content

[0006] The purpose of this invention is to provide a sewage sludge storage tank with an automatic sludge discharge structure to solve the problem of low efficiency in sludge settling judgment mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a sewage sludge storage tank with an automatic sludge discharge structure, comprising:

[0008] Sludge storage tank, sludge interface meter, host computer and output pipe;

[0009] The sludge interface instrument includes an external operator, an ultrasonic sensor probe, and a transmission wire. The host computer and the external operator are installed on the outer wall of the sludge storage tank. The ultrasonic sensor probe is located inside the sludge storage tank. The ultrasonic sensor probe is connected to the external operator for signal transmission via the transmission wire. The external operator is connected to the host computer.

[0010] The output pipe is installed on the lower side wall of the sludge storage tank and is connected to the sludge storage tank. An electrically controlled main valve is installed on the output pipe, and the host computer is electrically connected to the electrically controlled main valve.

[0011] Preferably, the upper part of the inner wall of the sludge storage tank is connected to an installation rod by screws, a vertical pipe is longitudinally connected to the installation rod, the ultrasonic sensing probe is connected to the bottom end of the vertical pipe, and the transmission wire is arranged inside the vertical pipe.

[0012] Preferably, the upper side of the outer wall of the ultrasonic sensing probe is provided with a threaded joint, and the bottom end of the inner wall of the vertical tube is provided with an internal thread that matches the threaded joint.

[0013] Preferably, a rubber plug is embedded at the top of the inner wall of the vertical tube, and a perforation for the transmission wire to pass through is opened in the middle of the rubber plug.

[0014] Preferably, it also includes an ultrasonic liquid level sensor, a bracket is connected to the outer wall of the vertical pipe, the ultrasonic liquid level sensor is mounted on the bracket, and the ultrasonic liquid level sensor is connected to the host computer.

[0015] Preferably, the output pipe is connected to a tee pipe, and the other two ports of the tee pipe are respectively connected to two pipes. Both pipes are equipped with electrically controlled branch valves. The host computer is electrically connected to the electrically controlled branch valves. One of the two pipes is a sludge output pipe and the other is a sewage output pipe.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] During use, the sludge interface meter detects the sludge settling in the sludge storage tank and outputs the detection information to the host computer. The host computer then determines whether to open the electrically controlled main valve on the output pipe. The entire process automatically detects and controls the discharge, which is highly efficient and the treatment method is relatively accurate. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the mounting rod, vertical pipe, ultrasonic sensor probe, etc. of this utility model;

[0020] Figure 3This is a schematic diagram of the existing sludge storage tank.

[0021] In the diagram: 1. Sludge storage tank; 2. Mounting rod; 3. Vertical pipe; 4. Rubber plug; 5. Ultrasonic sensor probe; 6. Threaded joint; 7. Bracket; 8. Ultrasonic liquid level sensor; 9. External operator; 10. Host computer; 11. Output pipe; 12. Electrically controlled main valve; 13. T-shaped pipe; 14. Pipeline; 15. Electrically controlled branch valve; 16. Water outlet pipe; 17. Sampling pipe; 18. Electrically controlled switch valve; 19. Switch box; 20. Discharge pipeline. Detailed Implementation

[0022] 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.

[0023] 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.

[0024] Example 1:

[0025] Please see Figure 1-2 This utility model provides a technical solution: a sewage sludge storage tank with an automatic sludge discharge structure, including: a sludge storage tank body 1, a sludge interface instrument, a host computer 10, and an output pipe 11;

[0026] The sludge interface instrument includes an external operator 9, an ultrasonic sensor probe 5, and a transmission wire. The host computer 10 and the external operator 9 are installed on the outer wall of the sludge storage tank 1. The ultrasonic sensor probe 5 is located inside the sludge storage tank 1 and is connected to the external operator 9 via the transmission wire. The external operator 9 is connected to the host computer 10. The output pipe 11 is installed on the lower side of the side wall of the sludge storage tank 1 and is connected to the sludge storage tank 1. An electrically controlled main valve 12 is installed on the output pipe 11, and the host computer 10 is electrically connected to the electrically controlled main valve 12.

[0027] Analysis of the above content: The sludge interface meter adopts existing technology. The sludge interface meter utilizes the ultrasonic echo detection principle. The ultrasonic sensor probe 5 extends below the sludge surface to detect the distance between the ultrasonic sensor probe 5 and the sludge interface and the bottom surface. The data detected by the ultrasonic sensor probe 5 is output to the external operator 9 (i.e., the external control box of the sludge interface meter). The external operator 9 is connected to the host computer 10 through the existing data transmission protocol. After the settling depth reaches the preset requirement, the host computer 10 outputs a control to open the main electrical valve 12, discharging the settled sludge in the sludge storage tank 1. The sludge discharge time is set according to the measured amount of settled sludge. After that, the wastewater after sludge discharge is discharged (some wastewater is agitated during the sludge discharge process, but the impact on the overall process is not significant, and this situation also exists in current sludge tanks, so the overall impact is small).

[0028] Example 2:

[0029] Please see Figure 1-2 Based on Embodiment 1, this utility model provides a technical solution: the upper part of the inner wall of the sludge storage tank 1 is connected to an installation rod 2 by screws, a vertical pipe 3 is longitudinally connected to the installation rod 2, the ultrasonic sensing probe 5 is connected to the bottom end of the vertical pipe 3, and the transmission wire is arranged inside the vertical pipe 3.

[0030] Analysis of the above content: The vertical pipe 3 serves to fix the ultrasonic sensor probe 5, preventing the ultrasonic sensor probe 5 from moving with the water flow and causing inaccurate measurements.

[0031] Example 3:

[0032] Please see Figure 1-2 Based on Embodiment 2, this utility model provides a technical solution: a threaded connector 6 is provided on the upper side of the outer wall of the ultrasonic sensing probe 5, and an internal thread matching the threaded connector 6 is provided at the bottom of the inner wall of the vertical tube 3.

[0033] Analysis of the above content: The connection between the threaded connector 6 and the internal thread facilitates disassembly and assembly. A sealing gasket can be added at the connection point to provide a certain degree of waterproofing and to protect the transmission wires inside the vertical pipe 3.

[0034] Example 4:

[0035] Please see Figure 1-2 Based on Embodiment 2, this utility model provides a technical solution: a rubber plug 4 is embedded at the top of the inner wall of the vertical pipe 3, and a through hole for the transmission wire to pass through is opened in the middle of the rubber plug 4.

[0036] Analysis of the above content: The rubber stopper 4 is set to seal the upper opening of the vertical tube 3 from the top, preventing rainwater, dust and other substances from falling into the interior of the vertical tube 3.

[0037] Example 5:

[0038] Please see Figure 1-2 This utility model provides a technical solution based on Embodiment 2: it further includes an ultrasonic level sensor 8, a bracket 7 is connected to the outer wall of the vertical pipe 3, the ultrasonic level sensor 8 is mounted on the bracket 7, and the ultrasonic level sensor 8 is connected to the host computer 10. The output pipe 11 is externally connected to a three-way pipe 13, and the other two ports of the three-way pipe 13 are respectively connected to two pipes 14. Each of the two pipes 14 is equipped with an electrically controlled branch valve 15, and the host computer 10 is electrically connected to the electrically controlled branch valve 15. One of the two pipes 14 is a sludge output pipe and the other is a sewage output pipe.

[0039] Analysis of the above content: The ultrasonic level sensor 8 can measure the distance between the ultrasonic level sensor 8 and the upper liquid surface of the sludge. Based on the installation height of the ultrasonic level sensor 8 itself, the total depth of the sludge (sewage) in the sludge storage tank 1 can be calculated. The sludge interface meter can measure the thickness of the settled sludge, thereby converting the depth of the upper sewage. For example, if the distance between the ultrasonic level sensor 8 and the bottom of the sludge storage tank 1 is 2m, the ultrasonic level sensor 8 measures the distance between the ultrasonic level sensor 8 and the upper liquid surface of the sludge as 0.5m, and the sludge interface meter measures the thickness of the settled sludge as 1.2m, then the depth of the upper sewage can be calculated as 2m - 0.5m - 1.2m = 0.3m.

[0040] Thus, based on the inner diameter of the output pipe 11, the approximate time for discharging the settled sludge can be determined (the impact of water pressure changes is relatively small here, so the flow rate changes caused by water pressure changes are ignored, and the impact can be further reduced by subsequent adjustments based on the experience of the staff). When discharging the settled sludge, the main electric valve 12 and the branch electric valve 15 on the sludge output pipe are opened. After the settled sludge is discharged, the branch electric valve 15 on the sludge output pipe is closed, and the branch electric valve 15 on the sewage output pipe is opened.

[0041] Depending on the usage requirements, settled sludge can be discharged separately here, while the upper wastewater can be discharged by suction from the top.

[0042] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It is obvious to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description. Therefore, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this utility model, and no reference numerals in the claims should be considered as limiting the scope of the claims.

[0043] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A sewage sludge storage tank with an automatic sludge discharge structure, characterized in that, include: Sludge storage tank (1), sludge interface instrument, host computer (10) and output pipe (11); The sludge interface instrument includes an external operator (9), an ultrasonic sensor probe (5), and a transmission wire. The host computer (10) and the external operator (9) are installed on the outer wall of the sludge storage tank (1). The ultrasonic sensor probe (5) is located inside the sludge storage tank (1). The ultrasonic sensor probe (5) is connected to the external operator (9) via the transmission wire. The external operator (9) is connected to the host computer (10). The output pipe (11) is installed on the lower side of the side wall of the sludge storage tank (1) and is connected to the sludge storage tank (1). An electrically controlled main valve (12) is installed on the output pipe (11), and the host computer (10) is electrically connected to the electrically controlled main valve (12).

2. The sewage sludge storage tank with an automatic sludge discharge structure according to claim 1, characterized in that: The upper part of the inner wall of the sludge storage tank (1) is connected to an installation rod (2) by screws. A vertical pipe (3) is longitudinally connected to the installation rod (2). The ultrasonic sensing probe (5) is connected to the bottom end of the vertical pipe (3). The transmission wire is arranged inside the vertical pipe (3).

3. The sewage sludge storage tank with an automatic sludge discharge structure according to claim 2, characterized in that: The upper side of the outer wall of the ultrasonic sensing probe (5) is provided with a threaded connector (6), and the bottom of the inner wall of the vertical tube (3) is provided with an internal thread that matches the threaded connector (6).

4. The sewage sludge storage tank with an automatic sludge discharge structure according to claim 2, characterized in that: A rubber plug (4) is embedded at the top of the inner wall of the vertical tube (3), and a perforation for the transmission wire to pass through is opened in the middle of the rubber plug (4).

5. The sewage sludge storage tank with an automatic sludge discharge structure according to claim 2, characterized in that: It also includes an ultrasonic liquid level sensor (8), a bracket (7) is connected to the outer wall of the vertical pipe (3), the ultrasonic liquid level sensor (8) is mounted on the bracket (7), and the ultrasonic liquid level sensor (8) is connected to the host computer (10).

6. The sewage sludge storage tank with an automatic sludge discharge structure according to claim 5, characterized in that: The output pipe (11) is connected to a three-way pipe (13), and the other two ports of the three-way pipe (13) are respectively connected to two pipes (14). Both pipes (14) are equipped with electrically controlled branch valves (15). The host computer (10) is electrically connected to the electrically controlled branch valves (15). One of the two pipes (14) is a sludge output pipe and the other is a sewage output pipe.

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