A siphon type lime dosing system

Abstract

The utility model belongs to wastewater treatment technical field especially is a siphon type lime dispensing system. The utility model discloses the sedimentation tank that has collected wastewater, the dispensing pool for preparing lime emulsion and the storage pool of storing lime emulsion are connected gradually, the sedimentation tank is connected with the dispensing pool through siphon pipe, and the liquid level of sedimentation tank is higher than the liquid level of dispensing pool, the inlet of dispensing pool is connected with lime feeding device, and dispensing pool is located the upper portion of storage pool and is connected with storage pool through transfer pipe. The utility model utilizes siphon effect, realizes the mixing of lime and water with constant ratio through interlocking control, and prepares stable concentration lime emulsion, and saves water source.

Description

Technical Field

[0001] This utility model belongs to the field of wastewater treatment technology, and in particular relates to a siphon-type lime dosing system. Background Technology

[0002] Lime is commonly used in wastewater treatment, especially in coagulation and sedimentation systems. However, tap water is often used for preparation, which wastes water resources and increases drainage volume and costs. Furthermore, pressurized water supply is often used during preparation, wasting energy. Additionally, the same mixing tank and storage tank are often used, and the bottom sludge can severely damage the pumps. Moreover, the control of the preparation is often done in a crude manner, resulting in unstable concentrations and making it difficult to control the dosage during water treatment. Therefore, there is an urgent need for a siphon-type lime preparation system to solve these problems. Utility Model Content

[0003] To overcome the shortcomings of the existing technology, this invention provides a siphon-type lime dispensing system. This invention utilizes the siphon effect to reduce power consumption, and uses water from a sedimentation tank as the water source, thus saving energy.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A siphon-type lime preparation system includes a sedimentation tank for collecting wastewater, a preparation tank for preparing lime slurry, and a storage tank for storing lime slurry, all connected in sequence. The sedimentation tank is connected to the preparation tank via a siphon pipe, and the liquid level in the sedimentation tank is higher than that in the preparation tank. The inlet of the preparation tank is connected to a lime dosing device, and the preparation tank is located above the storage tank and connected to the storage tank via a transfer pipe.

[0006] Preferably, the lime dosing device includes a lime silo and a screw conveyor, with the outlet of the lime silo connected to the inlet of the screw conveyor and the outlet of the screw conveyor connected to the inlet of the mixing tank.

[0007] Preferably, the liquid level in the sedimentation tank is more than 1 meter higher than the top of the dosing tank, ensuring that the siphon pipe can smoothly introduce the wastewater settled in the sedimentation tank into the dosing tank.

[0008] Preferably, the inlet end of the siphon pipe is connected to the sedimentation tank at a depth of 0.5m below the liquid level, and the outlet end of the siphon pipe is connected to the dosing tank.

[0009] Preferably, the end of the siphon pipe closest to the dosing tank is connected to the water supply pipe via a manual valve to regulate the water volume. The water supply pipe is used to replenish tap water to fill the siphon pipe and achieve siphoning.

[0010] Preferably, the end of the siphon pipe closest to the dosing tank is interlocked with the screw conveyor via an automatic valve to achieve simultaneous opening and closing.

[0011] Preferably, both the mixing tank and the storage tank are equipped with a mixer and a level gauge. The level gauge in the mixing tank can control the opening and closing of the screw conveyor and the automatic valve of the siphon pipe to achieve automatic control; the level gauge in the storage tank is used to control the automatic transfer valve to achieve automatic replenishment of medicine.

[0012] Preferably, the screw conveyor is an adjustable feeding screw, which facilitates the addition of lime to the lime mixing tank at a stable speed.

[0013] Preferably, a transfer valve is installed on the transfer pipe, and the liquid level of the transfer valve is ≥ 15% of the total height of the mixing tank. The transfer pipe is connected to the storage tank, leaving the slag in the lime at the bottom of the mixing tank to prevent it from entering the storage tank. The transfer valve is a pneumatic valve. An empty valve is installed at the bottom of the mixing tank for maintenance or flushing and slag removal.

[0014] Preferably, the system also includes a dosing pump connected to the storage tank. The dosing pump is a pneumatic diaphragm pump that draws the agent from the bottom of the storage tank and delivers it to the application point.

[0015] The advantages of this utility model are:

[0016] (1) This utility model utilizes the siphon effect and interlocking control to achieve a constant ratio of lime and water to prepare a lime slurry with a stable concentration, while reducing power consumption and saving energy.

[0017] (2) This utility model controls the simultaneous opening and closing of the valve and the screw, and controls the feeding by liquid level, which is simple and reliable. The water source for the siphon is water from the sedimentation tank, which does not require additional system processing capacity and drainage, thus reducing operating costs.

[0018] (3) The concentration of the drug prepared by this utility model is stable and adjustable, and has a wide range of applications;

[0019] (4) The present invention provides an emptying valve at the bottom of the dosing tank to facilitate the removal of slag, improve the purity of the storage tank, and reduce the loss and clogging of the dosing system. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the process of this utility model.

[0021] The meanings of the symbols marked in the figure are as follows:

[0022] 1-Sedimentation tank, 2-Dosage mixing tank, 3-Dosage storage tank, 4-Lime silo, 5-Screw conveyor, 6-Siphon pipe, 7-Water supply pipe, 8-Manual valve, 9-Automatic valve, 10-Transfer pipe, 11-Transfer valve, 12-Drain valve, 13-Agitator, 14-Level gauge, 15-Dosing pump. Detailed Implementation

[0023] like Figure 1 As shown, a siphon-type lime dosing system includes a sedimentation tank 1, a siphon pipe 6, a lime dosing device, a dosing tank 2, a storage tank 3, and a lime slurry dosing device.

[0024] Specifically, one end of the siphon pipe 6 is connected to the sedimentation tank 1 0.5m below the liquid level, and the other end is connected to the dosing tank 2. An automatic valve 9 and a manual valve 8 are installed on the siphon pipe 6 near the dosing tank 2. A tap water inlet is installed on the siphon pipe 6; that is, the siphon pipe 6 is connected to the water supply pipe 7 via the manual valve 8 to fill the siphon pipe, achieving siphoning. The manual valve 8 is used to regulate the water volume; the automatic valve 9 is used to interlock with the screw conveyor 5, opening and closing simultaneously. The siphon pipe 6 draws water from the sedimentation tank 1, and the liquid level in the sedimentation tank 1 is more than 1m above the top of the dosing tank 2.

[0025] Furthermore, the lime dosing device includes a lime silo 4 and a screw conveyor 5. The outlet of the lime silo 4 is connected to the inlet of the screw conveyor 5, and the outlet of the screw conveyor 5 is connected to the inlet of the mixing tank 2. The lime silo 4 is a pneumatic conveying system, and the screw conveyor 5 is an adjustable dosing screw, which adds lime to the lime mixing tank 2 at a stable speed.

[0026] Furthermore, both the mixing tank 2 and the storage tank 3 are equipped with a mixer 13 and a level gauge 14. A transfer valve 11 and a drain valve 12 are installed at the bottom of the mixing tank 2. The transfer valve 11 is a pneumatic valve connected to the storage tank 3, and the liquid level at the transfer valve 11 is not less than 15% of the total height of the mixing tank 2. The mixing tank 2 is located above the storage tank 3. The level gauge 14 in the mixing tank 2 controls the opening and stopping of the screw conveyor 5 and the automatic valve 9, achieving automatic control. A transfer pipe 10 and a transfer valve 11 are installed 0.3-0.5m above the bottom of the mixing tank 2. The transfer pipe 10 connects to the storage tank 3, leaving the slag in the lime at the bottom to prevent it from entering the storage tank 3. A drain valve 12 is installed at the bottom of the mixing tank 2, which is opened during maintenance or flushing. The level gauge 14 in the storage tank 3 controls the transfer valve 11, achieving automatic replenishment of the drug.

[0027] The lime slurry dosing device is a dosing pump 15, which can be a pneumatic diaphragm pump, used to draw the agent from the bottom of the storage tank 3 and transport it to the application point.

[0028] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A siphon-type lime dispensing system, characterized in that, The system includes a sedimentation tank (1) for collecting wastewater, a dosing tank (2) for preparing lime slurry, and a storage tank (3) for storing lime slurry, which are connected in sequence. The sedimentation tank (1) is connected to the dosing tank (2) through a siphon (6), and the liquid level of the sedimentation tank (1) is higher than the liquid level of the dosing tank (2). The inlet of the dosing tank (2) is connected to a lime dosing device, and the dosing tank (2) is located above the storage tank (3) and connected to the storage tank (3) through a transfer pipe (10).

2. The siphon-type lime dispensing system according to claim 1, characterized in that: The lime dosing device includes a lime silo (4) and a screw conveyor (5). The outlet of the lime silo (4) is connected to the inlet of the screw conveyor (5), and the outlet of the screw conveyor (5) is connected to the inlet of the mixing tank (2).

3. The siphon-type lime dispensing system according to claim 1, characterized in that: The liquid level in the sedimentation tank (1) is more than 1m higher than the top of the dosing tank (2).

4. A siphon-type lime dispensing system according to claim 1 or 3, characterized in that: The inlet end of the siphon (6) is connected to the sedimentation tank (1) at a depth of 0.5m below the liquid level, and the outlet end of the siphon (6) is connected to the dosing tank (2).

5. A siphon-type lime dispensing system according to claim 1 or 3, characterized in that: The end of the siphon pipe (6) near the medicine preparation tank (2) is connected to the water supply pipe (7) via a manual valve (8).

6. The siphon-type lime dispensing system according to claim 2, characterized in that: The end of the siphon (6) near the medicine preparation tank (2) is interlocked with the screw conveyor (5) via an automatic valve (9).

7. The siphon-type lime dispensing system according to claim 1, characterized in that: A mixer (13) and a level gauge (14) are installed in both the mixing tank (2) and the storage tank (3).

8. The siphon-type lime dispensing system according to claim 2, characterized in that: The screw conveyor (5) is an adjustable feed screw.

9. A siphon-type lime dispensing system according to claim 1, characterized in that: A transfer valve (11) is installed on the transfer pipe (10), and the liquid level of the transfer valve (11) is ≥ 15% of the total height of the drug preparation tank (2); an emptying valve (12) is installed at the bottom of the drug preparation tank (2).

10. A siphon-type lime dispensing system according to claim 1, characterized in that: The system also includes a dosing pump (15) connected to the drug storage tank (3), the dosing pump (15) being a pneumatic diaphragm pump.

Images