Dosing device for sewage treatment

Abstract

The utility model relates to a dosing device for sewage treatment. Comprising a base, a liquid medicine box is installed on the base, a powder supply assembly and a stirring assembly are installed on the top wall of the liquid medicine box, a water source supplementing assembly is installed on the side wall of the liquid medicine box, and a medicine adding assembly is installed on the base and the side portion of the liquid medicine box; the powder supply assembly comprises a powder supply box internally provided with a transverse conveying auger and a powder supply motor for driving the conveying auger, a powder hopper with a vibration motor on the side part is mounted at the top of the powder supply box, a powder falling funnel is mounted on the top wall of the liquid medicine box and on an outlet pipe of the powder supply box, and the powder falling funnel is communicated with an inner cavity of the liquid medicine box; the dosing assembly comprises a dosing metering pump, an inlet of the dosing metering pump is connected with the bottom of an inner cavity of the liquid medicine box through a liquid taking pipeline, and a dosing pipeline is installed on an outlet pipe of the dosing metering pump. The sewage treatment dosing device provided by the utility model is high in structural integration level and flexible in movement and arrangement, has the functions of liquid medicine preparation and dosing, and meets the requirements on treatment liquid medicine in a sewage treatment scene.

Description

TECHNICAL FIELD

[0001] The utility model belongs to sewage treatment facility technical field especially relates to a sewage treatment dosing device. BACKGROUND

[0002] In the field of sewage treatment, it is usually necessary to add drugs according to the different pollutant components contained in the sewage, such as adding coagulants, flocculants, acid-base regulators, oxidizing agents, reducing agents, phosphorus removal agents, etc., to achieve the effects of removing suspended solids, organic matter, adjusting pH value, denitrification and phosphorus removal, etc. Before adding drugs, the properties of the sewage and the treatment target must be fully understood in order to select appropriate reagents and design appropriate dosing schemes.

[0003] Under normal circumstances, the powder medicine needs to be configured into a liquid medicine before being added to the sewage, and then mixed with the sewage. Therefore, it is necessary to develop and design an integrated dosing device with high integration, flexible movement and arrangement to meet the needs of treating liquid medicine in the sewage treatment scene. UTILITY MODEL CONTENTS

[0004] The utility model aims to provide a sewage treatment dosing device with high structural integration, flexible movement and arrangement, and both liquid medicine configuration and dosing functions.

[0005] The technical scheme adopted by the utility model is: a sewage treatment dosing device, comprising a base, a liquid medicine tank installed on the base, a powder supply assembly and a stirring assembly installed on the top wall of the liquid medicine tank, a water source supplement assembly installed on the side wall of the liquid medicine tank, and a dosing assembly installed on the base and the side of the liquid medicine tank; the powder supply assembly comprises a medicine supply tank with a horizontal conveying auger inside and a medicine supply motor driving the conveying auger, a powder hopper with a vibration motor on the side is installed on the top of the medicine supply tank, a dosing funnel is installed on the top wall of the liquid medicine tank and the outlet pipe of the medicine supply tank, and the dosing funnel is connected with the inner cavity of the liquid medicine tank; the dosing assembly comprises a dosing metering pump, the inlet of the dosing metering pump is connected with the bottom of the inner cavity of the liquid medicine tank through a liquid taking pipe, and a dosing pipe is installed on the outlet pipe of the dosing metering pump.

[0006] Preferably, a damping type level sensor is installed on the side wall of the medicine supply tank, and a cover is installed on the top of the powder hopper.

[0007] Preferably, the stirring assembly comprises a stirring motor installed on the top wall of the liquid medicine tank, and a stirring shaft and an impeller are installed on the output shaft of the stirring motor.

[0008] Preferably, the water source supplement assembly comprises a water supplement pipe connected to a water supplement port provided on the top wall of the liquid medicine tank, and a pressure sensor, an electromagnetic valve and a water supplement flowmeter are installed on the water supplement pipe.

[0009] Preferably, two dosing metering pumps are arranged in parallel and are supported by a support base installed and fixed on the base. The liquid extraction pipeline is a Y-shaped pipeline and its two branches are respectively connected to the inlets of the two dosing metering pumps. The dosing pipeline is a Y-shaped pipeline and its two branches are respectively connected to the outlets of the two dosing metering pumps.

[0010] Preferably, a flow calibration column is installed on the liquid extraction pipeline, and a pulse damper is installed on the drug addition pipeline.

[0011] Preferably, an overflow pipe and a waste pipe with a manual ball valve are provided on the back of the medicine liquid tank, the upper end of the overflow pipe is connected to the overflow port provided on the upper part of the rear wall of the medicine liquid tank, and the waste pipe is connected to the waste port provided on the bottom of the rear wall of the medicine liquid tank.

[0012] Preferably, a liquid level gauge is also installed on the side wall of the medicine liquid tank.

[0013] The advantages and positive effects of the utility model are:

[0014] The utility model provides a sewage treatment dosing device, in which a liquid medicine tank and a dosing component are installed on a base, and a powder supply component, a stirring component and a water source replenishing component are installed on the liquid medicine tank, so that the dosing device has a compact overall structure and a high degree of structural integration. It is a miniaturized facility specially used for sewage treatment scenarios, and the overall skid-mounted structure is realized, so it is flexible to move and arrange.

[0015] By installing a powder supply component, a stirring component and a water source replenishment component on the liquid medicine tank, the powder medicine and the water source are injected into the liquid medicine tank in a proportioned manner and are fully mixed to form a liquid medicine under the stirring and mixing action of the stirring component. The mixed liquid medicine is extracted from the liquid medicine tank by the action of the dosing metering pump and injected into the sewage. Therefore, this sewage treatment dosing device has both liquid medicine configuration and dosing functions, which meets the demand for treatment liquid medicine in sewage treatment scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0017] Figure 2 It is a schematic diagram of the three-dimensional structure of the utility model, from the front perspective;

[0018] Figure 3 It is a three-dimensional structural diagram of the utility model, from a rear perspective.

[0019] In the picture:

[0020] 1. Base; 2. Liquid medicine tank; 3. Medicine supply tank; 4. Medicine supply motor; 5. Powder hopper; 6. Stirring motor; 7. Vibration motor; 8. Damping material level sensor; 9. Medicine drop funnel; 10. Pressure sensor; 11. Solenoid valve; 12. Water supply flow meter; 13. Water supply pipeline; 14. Dosing flow meter; 15. Liquid level gauge; 16. Dosing metering pump; 17. Support base; 18. Return pipeline; 19. Dosing pipeline; 20. Tank cover; 21. Stirring shaft and impeller; 22. Overflow pipeline; 23. Waste discharge pipeline; 24. Liquid extraction pipeline; 25. Flow calibration column; 26. Pulse damper. DETAILED DESCRIPTION

[0021] In order to further understand the content, features and effects of the present invention, the following embodiments are given to illustrate in detail.

[0022] See Figure 1 、 Figure 2 and Figure 3 The sewage treatment dosing device of the utility model includes a base 1, a liquid medicine tank 2 is installed on the base 1, a powder supply component and a stirring component are installed on the top wall of the liquid medicine tank 2, a water source replenishing component is installed on the side wall of the liquid medicine tank 2, and a dosing component is installed on the base 1 and the side of the liquid medicine tank 2.

[0023] The base 1 is a flat frame welded from I-beams or C-shaped steel. Other accessories are mounted directly onto the flat frame, resulting in a skid-mounted structure for the sewage treatment dosing device. The overall structure is compact, highly integrated, and flexible in movement and layout. The powder supply assembly is used to supply powdered medication to the medication tank 2. The water supply assembly is used to supply water to the medication tank 2. The stirring assembly provides a stirring and mixing function to promote uniform mixing of the powdered medication and the water to form a medication solution. The dosing assembly is used to controllably inject the mixed medication solution into the sewage.

[0024] In this embodiment, to facilitate maintenance and cleaning of the interior of the chemical tank 2, an inspection hatch is provided on the rear portion of the top wall of the chemical tank 2, and an openable lid 20 is mounted on the hatch. In this embodiment, to provide an on-site indication of the amount of chemical liquid within the chemical tank 2, a liquid level gauge 15 is also mounted on the side wall of the chemical tank 2. This gauge 15 comprises a transparent, vertically graduated liquid level indicator tube that clearly displays the internal chemical liquid level. When the chemical liquid level reaches a low level, chemical mixing is initiated to replenish the chemical liquid.

[0025] The powder supply assembly includes a medicine supply box 3 with a horizontal conveying auger inside and a medicine supply motor 4 that drives the conveying auger. A powder hopper 5 with a vibration motor 7 on the side is installed on the top of the medicine supply box 3. A medicine drop funnel 9 is installed on the top wall of the medicine liquid tank 2 and on the outlet pipe of the medicine supply box 3. The medicine drop funnel 9 is connected to the inner cavity of the medicine liquid tank 2.

[0026] Under the action of the vibration motor 7, the powder medicine in the powder hopper 5 flows downward into the medicine supply box 3, and the medicine supply motor 4 drives the conveying auger to rotate. The conveying auger transfers the powder medicine to the outlet pipe, and finally discharges it from the outlet pipe into the medicine drop funnel 9, and then falls from the medicine drop funnel 9 into the medicine liquid tank 2. Since the conveying auger determines the conveying amount of powder medicine for each rotation of the conveying auger, the conveying amount of powder medicine is controlled by controlling the number of rotations of the conveying auger.

[0027] In this embodiment, a damped material level sensor 8 is installed on the side wall of the medicine supply box 3. The damped material level sensor 8 is used to detect whether the powder medicine in the medicine supply box 3 and the powder hopper 5 is out of material. If there is a shortage of material (referring to the powder medicine level in the medicine supply box 3 dropping below the detection surface of the damped material level sensor 8), it notifies to replenish the powder medicine. The working principle of the damped material level sensor 8 is as follows: when the power is turned on and the blades are not blocked, the motor drives the blades to operate normally. At this time, the limit switch XL2 is pressed, the contacts are connected and a no-material signal is given. When the blades encounter material obstruction, the motor housing rotates relative to the limit switch XL1 by an angle, the motor stops, and the limit switch XL2 is released. The contacts are connected and a material signal is given. The damped material level sensor 8 is an existing component, which was obtained through purchase. Its structure and function are not described in detail.

[0028] In this embodiment, a buckle cover is installed on the top of the powder hopper 5. The buckle cover can prevent dust from being generated under the action of the vibration motor 7.

[0029] The stirring assembly includes a stirring motor 6 installed on the top wall of the medicine liquid tank 2, and a stirring shaft and an impeller 21 are installed on the output shaft of the stirring motor 6. The stirring shaft and the impeller 21 are located inside the medicine liquid tank 2, and the lowermost impeller is close to the bottom wall of the medicine liquid tank 2, so as to ensure that the internal medicine liquid is fully stirred and mixed.

[0030] The water source replenishment component includes a water replenishment pipeline 13 connected to the water replenishment port set on the top wall of the medicine liquid tank 2. A pressure sensor 10, a solenoid valve 11 and a water replenishment flow meter 12 are installed on the water replenishment pipeline 13, wherein the pressure sensor 10 is used to detect the pressure of the water source network, the solenoid valve 11 is used to control the on-off of the water replenishment pipeline 13, and the water replenishment flow meter 12 is used to measure the flow rate of water replenishment. The water replenishment flow rate and the amount of powder medicine meet the set proportional relationship, so that the medicine liquid in the medicine liquid tank 2 maintains a constant concentration.

[0031] like Figure 1 As shown in the figure, the middle part of the water supply pipeline 13 has two parallel branches, the solenoid valve 11 is installed on one of the branches, and manual ball valves are installed on both branches. A flange is provided at the end of the water supply pipeline 13 to improve the convenience of docking with the water source pipeline.

[0032] The dosing component includes a dosing metering pump 16, the inlet of which is connected to the bottom of the inner cavity of the medicine liquid tank 2 through a liquid intake pipeline 24. A dosing pipeline 19 is installed on the outlet pipe of the dosing metering pump 16, and a flange is provided at the end of the dosing pipeline 19 to improve the convenience of docking with the sewage medicine filling pipeline.

[0033] In this embodiment, two dosing metering pumps 16 are provided in parallel and are both supported by a support base 17 fixed to the base 1. The liquid extraction pipeline 24 is a Y-shaped pipeline with its two branches connected to the inlets of the two dosing metering pumps 16 respectively. The dosing pipeline 19 is a Y-shaped pipeline with its two branches connected to the outlets of the two dosing metering pumps 16 respectively. The two dosing metering pumps 16 constitute one for use and one for backup, which improves the reliability of the operation of the dosing device. When one of the dosing metering pumps 16 is in operation, the liquid is extracted through the liquid extraction pipeline 24 and injected into the sewage through the dosing pipeline 19.

[0034] In this embodiment, a flow calibration column 25 is installed on the liquid extraction pipeline 24, and a pulse dampener 26 is installed on the dosing pipeline 19. The flow calibration column 25 is a common tool used for measurement and calibration. It is typically a cylindrical object with precise and repeatable measurement values. By interacting with the object to be measured, it can determine the exact value of the object to be measured. When used in the dosing assembly, it is used to measure and calibrate the dosage, improving the accuracy of the dosage. The pulse dampener 26 is used to eliminate pipeline pulsation and improve the stability of the dosing assembly. Both the flow calibration column 25 and the pulse dampener 26 are existing components and were purchased, so their structure and function are not described in detail here.

[0035] In this embodiment, an overflow pipe 22 and a waste pipe 23 with a manual ball valve are provided on the back of the chemical tank 2. The upper end of the overflow pipe 22 is connected to an overflow port located at the upper portion of the rear wall of the chemical tank 2, while the waste pipe 23 is connected to a waste port located at the bottom portion of the rear wall of the chemical tank 2. If the amount of chemical liquid in the chemical tank 2 exceeds the upper limit, it will be automatically discharged through the overflow pipe 22. When the internal chemical liquid needs to be completely drained and cleaned (for example, when switching to another chemical liquid), the manual ball valve on the waste pipe 23 can be opened.

[0036] How to run:

[0037] The powder medicine is added into the powder hopper 5, and the water supplement pipeline 13 is connected with the water source pipeline; after the medicine adding device is started, the medicine supply motor 4 is operated, the conveying auger in the medicine supply box 3 is driven to rotate, the powder medicine in the box is transferred to the medicine falling funnel 9 and further falls into the medicine liquid box 2; the electromagnetic valve 11 is opened, the water source is injected into the medicine liquid box 2 through the water supplement pipeline 13, because the quantity of the powder medicine and the quantity of the water source have a proportional relationship, so the electromagnetic valve 11 is closed after the water supplement quantity is reached; the stirring assembly is started, the stirring effect is applied to the inside, the mixed medicine liquid is formed; the medicine adding metering pump 16 is operated, the mixed medicine liquid is extracted from the medicine liquid box 2 and is delivered to the sewage medicine liquid adding pipeline, when the medicine adding flowmeter 14 measures the required medicine adding quantity, the medicine adding metering pump 16 stops operating.

Claims

1. A sewage treatment dosing device, characterized by: The invention comprises a base (1), a liquid medicine tank (2) is installed on the base (1), a powder supply assembly and a stirring assembly are installed on the top wall of the liquid medicine tank (2), a water source replenishing assembly is installed on the side wall of the liquid medicine tank (2), and a dosing assembly is installed on the base (1) and the side of the liquid medicine tank (2); the powder supply assembly comprises a medicine supply box (3) with a horizontal conveying screw and a medicine supply motor (4) for driving the conveying screw, and a powder supply box (3) is installed on the top of the medicine supply box (3). A powder hopper (5) with a vibration motor (7) on the side is provided, and a medicine drop funnel (9) is installed on the top wall of the medicine liquid tank (2) and on the outlet pipe of the medicine supply box (3), and the medicine drop funnel (9) is connected with the inner cavity of the medicine liquid tank (2); the medicine adding component includes a medicine adding metering pump (16), the inlet of the medicine adding metering pump (16) is connected to the bottom of the inner cavity of the medicine liquid tank (2) through a liquid extraction pipeline (24), and a medicine adding pipeline (19) is installed on the outlet pipe of the medicine adding metering pump (16).

2. The sewage treatment dosing device according to claim 1, characterized in that: A damping type material level sensor (8) is installed on the side wall of the medicine supply box (3), and a buckle cover is installed on the top of the powder hopper (5).

3. The sewage treatment dosing device according to claim 2, characterized in that: The stirring assembly comprises a stirring motor (6) mounted on the top wall of the liquid medicine tank (2), and a stirring shaft and an impeller (21) are mounted on the output shaft of the stirring motor (6).

4. The sewage treatment dosing device according to claim 3, characterized in that: The water source replenishment component comprises a water replenishment pipeline (13) connected to a water replenishment port provided on the top wall of the liquid medicine tank (2); a pressure sensor (10), a solenoid valve (11) and a water replenishment flow meter (12) are installed on the water replenishment pipeline (13).

5. The sewage treatment dosing device according to claim 4, characterized in that: Two dosing metering pumps (16) are arranged in parallel and are both supported by a support base (17) fixedly mounted on the base (1); the liquid extraction pipeline (24) is a Y-shaped pipeline and its two branches are respectively connected to the inlets of the two dosing metering pumps (16); the dosing pipeline (19) is a Y-shaped pipeline and its two branches are respectively connected to the outlets of the two dosing metering pumps (16).

6. The sewage treatment dosing device as claimed in claim 5, characterized in that: A flow calibration column (25) is installed on the liquid extraction pipeline (24), and a pulse damper (26) is installed on the drug addition pipeline (19).

7. The sewage treatment dosing device according to any one of claims 1 to 6, characterized in that: An overflow pipe (22) and a waste discharge pipe (23) with a manual ball valve are provided on the back of the liquid medicine tank (2). The upper end of the overflow pipe (22) is connected to an overflow port provided on the upper portion of the rear wall of the liquid medicine tank (2), and the waste discharge pipe (23) is connected to a waste discharge port provided on the bottom portion of the rear wall of the liquid medicine tank (2).

8. The sewage treatment dosing device according to any one of claims 1 to 6, characterized in that: A liquid level gauge (15) is also installed on the side wall of the liquid medicine tank (2).

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