Full-automatic mud medicine control system of desliming system

Abstract

The utility model relates to a full-automatic sludge medicine control system of a desliming system. The full-automatic sludge medicine control system comprises a PLC, a stepping motor, a medicine adding device, a dissolving box, a medicine adding pump, a sludge pump, a flow meter, a mixing tank and a desliming machine. Wherein the PLC is electrically connected with the stepping motor and the flow meter; the stepping motor is connected with the dosing device and drives the dosing device to put a desliming agent into the dissolving tank under the control of the PLC; the dissolving tank is used for dissolving the desliming agent in the dissolving tank, and the dissolved desliming agent is conveyed to the dosing pump; the dosing pump conveys the dissolved desliming agent to the mixing tank through a dosing pipeline; the sludge pump conveys sludge to the mixing tank through a sludge pipeline; the mixing tank is used for mixing the desliming agent and the sludge and conveying the mixed sludge to the desliming machine; the desliming machine is used for desliming the mixed sludge; the flowmeter is arranged in the sludge pipeline and used for detecting sludge flow data in the sludge pipeline and sending the sludge flow data to the PLC.

Description

Technical Field

[0001] This application relates to the technical field of sludge treatment, and in particular to a fully automatic sludge-drug control system for a sludge removal system. Background Art

[0002] With the development of the economy, the discharge of sewage sludge has increased significantly. Sewage treatment plants have become an indispensable municipal project in urban development.

[0003] Generally, the sludge removal systems in sewage treatment plants are divided into belt sludge dewatering machines, plate and frame filter presses, centrifuge dewatering machines, low-temperature drying, etc. However, the above-mentioned sludge removal systems have the problem of rough dosing of sludge treatment agents, which greatly increases the cost of sewage treatment plants. Summary of the Utility Model

[0004] In order to overcome at least to some extent the problem of rough dosing of sludge treatment agents in the related sludge removal system, this application provides a fully automatic sludge-drug control system for a sludge removal system.

[0005] The solution of this application is as follows:

[0006] A fully automatic sludge-drug control system for a sludge removal system, comprising:

[0007] A PLC controller, a stepping motor, a dosing device, a dissolution tank, a dosing pump, a sludge pump, a flow meter, a mixing tank and a sludge removal machine;

[0008] The PLC controller is electrically connected to the stepping motor and the flow meter;

[0009] The stepping motor is connected to the dosing device and drives the dosing device to put the sludge treatment agent into the dissolution tank under the control of the PLC controller;

[0010] The dissolution tank dissolves the internal sludge treatment agent and conveys the dissolved sludge treatment agent to the dosing pump;

[0011] The dosing pump conveys the dissolved sludge treatment agent to the mixing tank through a dosing pipeline;

[0012] The sludge pump conveys the sludge to the mixing tank through a sludge pipeline;

[0013] The mixing tank is used to mix the sludge treatment agent and the sludge and convey the mixed sludge to the sludge removal machine;

[0014] The sludge removal machine is used to de-sludge the mixed sludge;

[0015] The flow meter is arranged in the sludge pipeline and is used to detect the sludge flow data in the sludge pipeline and send the sludge flow data to the PLC controller.

[0016] Preferably, a screw rod is arranged on the stepping motor;

[0017] The stepping motor drives the chemical dosing device to put the sludge dewatering agent into the dissolution tank through the screw rod.

[0018] Preferably, it further includes:

[0019] Dissolved chemical dosing device;

[0020] The dissolved chemical dosing device is used to add dissolved chemicals to the dissolution tank.

[0021] Preferably, it further includes:

[0022] Water washing pump and water washing tank;

[0023] The water washing pump is respectively connected to the sludge dewatering machine and the water washing tank;

[0024] The water washing pump is used to transport the sewage output by the sludge dewatering machine to the water washing tank;

[0025] The water washing tank is used to treat the sewage.

[0026] Preferably, a plurality of groups of spiral stirring devices are arranged in the mixing tank;

[0027] Each group of spiral stirring devices includes a plurality of screw pumps and a stirrer;

[0028] Each screw pump is connected to the stirrer.

[0029] Preferably, it further includes:

[0030] Ferric salt tank, ferric salt unloading pump and ferric salt dosing pump;

[0031] The ferric salt unloading pump is respectively connected to the ferric salt tank and the ferric salt dosing pump;

[0032] The ferric salt dosing pump is connected to the screw pump;

[0033] The ferric salt unloading pump is used to unload ferric salt from the ferric salt tank and transport the unloaded ferric salt to the ferric salt dosing pump;

[0034] The ferric salt dosing pump is used to transport ferric salt to the screw pump;

[0035] The screw pump is used to screw-ferric salt into the stirrer.

[0036] Preferably, the flowmeter includes:

[0037] Electromagnetic flowmeter and mass flowmeter.

[0038] Preferably, the electromagnetic flowmeter and the mass flowmeter are arranged in the sludge pipeline at a preset distance.

[0039] The technical solution provided by this application may have the following beneficial effects:

[0040] The fully automatic mud and medicine control system of the desludging system in the present application includes: a PLC controller, a stepper motor, a dosing device, a dissolving box, a dosing pump, a sludge pump, a flow meter, a mixing tank and a desludging machine.

[0041] Among them, the PLC controller is electrically connected to the stepper motor and the flow meter; the stepper motor is connected to the dosing device, and under the control of the PLC controller, the dosing device is driven to add desludging agent to the dissolution box; the dissolution box will dissolve the desludging agent inside, and transport the dissolved desludging agent to the dosing pump; the dosing pump will transport the dissolved desludging agent to the mixing tank through the dosing pipeline; the sludge pump will transport the sludge to the mixing tank through the sludge pipeline; the mixing tank is used to mix the desludging agent and the sludge, and transport the mixed sludge to the desludging machine; the desludging machine is used to desludge the mixed sludge; the flow meter is set in the sludge pipeline, used to detect the sludge flow data in the sludge pipeline, and send the sludge flow data to the PLC controller.

[0042] During implementation, the PLC controller outputs pulses to the stepper motor based on the sludge flow data. For example, if the flow is large, the output of the stepper motor will be increased, and if the flow is small, the output of the stepper motor will be reduced. In this way, the dosage of desludging agents is adjusted according to the sludge flow to avoid the problem of extensive desludging agents.

[0043] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0045] Figure 1 This is a schematic diagram of the structure of a fully automatic mud and medicine control system for a desludging system provided by an embodiment of the present application;

[0046] Figure 2 It is a structural schematic diagram of another fully automatic mud and medicine control system for a desludging system provided by an embodiment of the present application.

[0047] Figure numerals: PLC controller-1; stepper motor-2; dosing device-3; dissolving box-4; dosing pump-5; sludge pump-6; flow meter-7; mixing tank-8; desludging machine-9; dissolving agent dosing device-10; water washing pump-11; water washing tank-12. DETAILED DESCRIPTION

[0048] Here, exemplary embodiments will be described in detail, and examples thereof are shown in the accompanying drawings. When the following description refers to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. On the contrary, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0049] A fully automatic mud-drug control system for a mud removal system, comprising:

[0050] A PLC controller 1, a stepping motor 2, a chemical dosing device 3, a dissolution tank 4, a chemical dosing pump 5, a sludge pump 6, a flowmeter 7, a mixing tank 8, and a mud removal machine 9;

[0051] The PLC controller 1 is electrically connected to the stepping motor 2 and the flowmeter 7;

[0052] The stepping motor 2 is connected to the chemical dosing device 3 and drives the chemical dosing device 3 to feed the mud removal chemical into the dissolution tank 4 under the control of the PLC controller 1;

[0053] The dissolution tank 4 dissolves the mud removal chemical inside and transports the dissolved mud removal chemical to the chemical dosing pump 5;

[0054] The chemical dosing pump 5 transports the dissolved mud removal chemical to the mixing tank 8 through a chemical dosing pipeline;

[0055] The sludge pump 6 transports sludge to the mixing tank 8 through a sludge pipeline;

[0056] The mixing tank 8 is used to mix the mud removal chemical and the sludge and transport the mixed sludge to the mud removal machine 9;

[0057] The mud removal machine 9 is used to remove mud from the mixed sludge;

[0058] The flowmeter 7 is arranged in the sludge pipeline and is used to detect the sludge flow rate data in the sludge pipeline and send the sludge flow rate data to the PLC controller 1.

[0059] It should be noted that a screw rod is configured on the stepping motor 2;

[0060] The stepping motor 2 drives the chemical dosing device 3 to feed the mud removal chemical into the dissolution tank 4 through the screw rod.

[0061] In this technical solution, a PLC controller 1 is introduced for pulse motion control. When the flowmeter 7 monitors fluctuations in the sludge water volume, the PLC controller 1 accurately controls the rotation speed of the screw rod through the stepping motor 2 according to the fluctuation value to drive the chemical dosing device 3 for precise chemical dosing, ensuring that the concentration of the mud removal chemical is basically stable.

[0062] Calculation formula: Pulse = influent flow rate / 1000 * chemical dosing concentration / single - rotation dosing amount * 500. The single - rotation dosing amount of the spiral dosing device is 0.15 g, the single - pulse rotation is 0.72 degrees, and 500 pulses are required for a single rotation. If the current influent flow rate is 40 L / h and the chemical dosing concentration is 2.5‰, then the required dry powder amount to be matched is 0.1 kg / h, the rotation speed is 0.18518 revolutions per second, and the given pulse is 92 pulses per second.

[0063] It should be noted that the flowmeter 7 includes:

[0064] Electromagnetic flowmeter 7 and mass flowmeter 7.

[0065] The electromagnetic flowmeter 7 is a new type of flow measurement instrument that developed rapidly with the development of electronic technology in the 1950s - 1960s. The electromagnetic flowmeter 7 is an instrument that applies the principle of electromagnetic induction to measure the flow rate of conductive fluids based on the electromotive force induced when the conductive fluid passes through an external magnetic field.

[0066] The mass flowmeter 7 uses a heat - sensing measurement method to measure the flow rate by the amount of molecular mass carried away by the separated molecules. Because it uses a heat - sensing measurement method, it will not be affected by changes in gas temperature and pressure, thus affecting the measurement results. The mass flowmeter 7 is a relatively accurate, fast, reliable, efficient, stable, and flexible flow measurement instrument, and will be more widely used in fields such as petroleum processing and chemical engineering. It is believed that it will show great potential in promoting flow measurement. The mass flowmeter 7 cannot control the flow rate. It can only detect the mass flow rate of liquids or gases and output the flow rate value through analog voltage, current, or serial communication. However, the mass flow controller is an instrument that can both detect and control. The mass flow controller itself, in addition to the measurement part, also has an electromagnetic regulating valve or a piezoelectric valve. In this way, the mass flow control itself constitutes a closed - loop system for controlling the mass flow rate of fluids. The set value of the mass flow controller can be provided by analog voltage, analog current, or a computer, PLC.

[0067] In this technical solution, the sludge flow rate data in the sludge pipeline is measured by two types of flowmeters 7, and the detection result is more accurate.

[0068] In specific implementation, the electromagnetic flowmeter 7 and the mass flowmeter 7 are set in the sludge pipeline at a preset distance, which can ensure more comprehensive coverage of the sludge pipeline.

[0069] It should be noted that referring to Figure 2 , the fully automatic sludge - chemical control system of the sludge dewatering system further includes:

[0070] Dissolved chemical dosing device 10;

[0071] The dissolved chemical dosing device 10 is used to add dissolved chemicals to the dissolution tank 4.

[0072] The dissolution agent used in this technical solution is polyacrylamide. Polyacrylamide (PAM) is a linear polymer with the chemical formula (C3H5NO)n. It is a hard glassy solid at room temperature, and the products include glue solution, latex, white powder, translucent beads, and flakes. It has good thermal stability. It can dissolve in water in any proportion, and the aqueous solution is a uniformly transparent liquid.

[0073] It should be noted that referring to Figure 2 , the fully automatic sludge-drug control system of the sludge dewatering system further includes:

[0074] A water washing pump 11 and a water washing tank 12;

[0075] The water washing pump 11 is respectively connected to the sludge dewatering machine 9 and the water washing tank 12;

[0076] The water washing pump 11 is used to transport the sewage output from the sludge dewatering machine 9 to the water washing tank 12;

[0077] The water washing tank 12 is used to treat the sewage.

[0078] In this technical solution, the sewage output from the sludge dewatering machine 9 is treated by the water washing tank 12.

[0079] It should be noted that multiple groups of spiral stirring devices are arranged in the mixing tank 8;

[0080] Each group of spiral stirring devices includes multiple screw pumps and a stirrer;

[0081] Each screw pump is connected to the stirrer.

[0082] Furthermore, it further includes:

[0083] An iron salt tank, an iron salt discharging pump, and an iron salt dosing pump;

[0084] The iron salt discharging pump is respectively connected to the iron salt tank and the iron salt dosing pump;

[0085] The iron salt dosing pump is connected to the screw pump;

[0086] The iron salt discharging pump is used to discharge iron salt from the iron salt tank and transport the discharged iron salt to the iron salt dosing pump;

[0087] The iron salt dosing pump is used to transport the iron salt to the screw pump;

[0088] The screw pump is used to screw the iron salt into the stirrer.

[0089] In this technical solution, adding iron salt into the mixing tank 8 makes the mixing of the sludge dewatering agent and the sludge more uniform, resulting in better subsequent sludge dewatering effect.

[0090] It can be understood that the same or similar parts in the above embodiments can be referred to each other, and the content not described in detail in some embodiments can be referred to the same or similar content in other embodiments.

[0091] It should be noted that in the description of the present application, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, in the description of the present application, unless otherwise specified, the meaning of "a plurality" refers to at least two.

[0092] In the description of this specification, the description referring to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0093] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be construed as limiting the present application. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present application.

Claims

1. A fully automatic mud-drug control system for a mud removal system, characterized in that, Including: PLC controller, stepping motor, chemical dosing device, dissolution tank, chemical dosing pump, sludge pump, flowmeter, mixing tank and sludge dewatering machine; The PLC controller is electrically connected to the stepping motor and the flowmeter; The stepping motor is connected to the chemical dosing device, and drives the chemical dosing device to put sludge dewatering agent into the dissolution tank under the control of the PLC controller; The dissolution tank dissolves the internal sludge dewatering agent and transports the dissolved sludge dewatering agent to the chemical dosing pump; The chemical dosing pump transports the dissolved sludge dewatering agent to the mixing tank through a chemical dosing pipeline; The sludge pump transports sludge to the mixing tank through a sludge pipeline; The mixing tank is used to mix the sludge dewatering agent and sludge, and transports the mixed sludge to the sludge dewatering machine; The sludge dewatering machine is used to dewater the mixed sludge; The flowmeter is arranged in the sludge pipeline, used to detect the sludge flow data in the sludge pipeline, and send the sludge flow data to the PLC controller.

2. The full-automatic mud-drug control system of the mud removal system according to claim 1, characterized in that A screw rod is configured on the stepping motor; The stepping motor drives the chemical dosing device to put sludge dewatering agent into the dissolution tank through the screw rod.

3. The full-automatic sludge and chemical control system of the sludge removal system according to claim 1, characterized in that, Also including: Dissolved chemical dosing device; The dissolved chemical dosing device is used to add dissolved chemical to the dissolution tank.

4. The fully automatic sludge and chemical control system of the sludge removal system according to claim 1, characterized in that, Also including: Water washing pump and water washing pool; The water washing pump is respectively connected to the sludge dewatering machine and the water washing pool; The water washing pump is used to transport the sewage output by the sludge dewatering machine to the water washing pool; The water washing pool is used to treat the sewage.

5. The fully automatic sludge and chemical control system of the sludge removal system according to claim 1, characterized in that Multiple groups of spiral stirring devices are arranged in the mixing tank; Each group of spiral stirring devices includes multiple screw pumps and a stirrer; Each screw pump is connected to the stirrer.

6. The fully automatic sludge-drug control system of the sludge removal system according to claim 5, characterized in that, Also including: Ferric salt tank, ferric salt unloading pump and ferric salt dosing pump; The ferric salt unloading pump is respectively connected to the ferric salt tank and the ferric salt dosing pump; The ferric salt dosing pump is connected to the screw pump; The ferric salt unloading pump is used to unload ferric salt from the ferric salt tank and transport the unloaded ferric salt to the ferric salt dosing pump; The ferric salt dosing pump is used to transport ferric salt to the screw pump; The screw pump is used to screw-ferric salt into the stirrer.

7. The fully automatic sludge-drug control system of the sludge removal system according to claim 1, characterized in that, The flowmeter includes: Electromagnetic flowmeter and mass flowmeter.

8. The full-automatic sludge and drug control system of the sludge removal system according to claim 7, characterized in that, The electromagnetic flowmeter and the mass flowmeter are arranged in the sludge pipeline at a preset distance interval.

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