Automatic dosing device for pretreatment of mine water

Abstract

The utility model provides an automatic dosing device for mine water pretreatment, which belongs to the technical field of water treatment dosing equipment and comprises a dosing pipeline arranged at the water outlet end of a dosing barrel, the water outlet end of the dosing pipeline is communicated with a raw water pipeline, a metering pump is arranged on the dosing pipeline, and aeration components are arranged at the bottom and the upper part in the dosing barrel respectively. The lower surface of the aeration assembly at the bottom is communicated with an air supply pipeline, each aeration assembly comprises an air distribution bin, the peripheral surface of each air distribution bin is communicated with an aeration pipe, and the upper part and the lower part of each aeration pipe are respectively provided with a positioning assembly. Air is supplied to the aeration assembly through the air source of the ceramic membrane, liquid medicine in the barrel is aerated and stirred through the aeration pipe, so that the medicine in the dosing barrel is mixed, then the liquid medicine is supplied to the raw water pipeline through the metering pump, mechanical stirring of a stirring paddle can be replaced, and energy consumption during medicine mixing can be reduced through the air source of the ceramic membrane.

Description

Technical Field

[0001] This utility model relates to the technical field of water treatment dosing equipment, specifically to an automatic dosing device for mine water pretreatment. Background Technology

[0002] Mine water typically contains high concentrations of suspended solids (such as coal dust and rock dust), heavy metal ions, colloidal substances, and dissolved organic matter, which can pollute the environment if discharged directly. The pretreatment stage requires flocculation and sedimentation to remove suspended solids and some colloids, preparing the water for subsequent advanced treatment (such as reverse osmosis and ion exchange), which necessitates the use of automatic dosing devices.

[0003] In related technologies, automatic dosing devices for mine water pretreatment typically connect a dosing pipeline to the mine's raw water pipeline. By installing a flow meter and an online turbidity meter on the raw water pipeline, the flow rate and turbidity are analyzed, thereby controlling the opening and closing of valves on the dosing pipeline. Then, a metering pump pumps the flocculant solution in the dosing tank to the raw water pipeline, thus achieving automatic dosing of raw mine water.

[0004] However, most existing automatic dosing devices for mines involve adding solid flocculants into a dosing tank, then mixing them with water using a motor and an agitator to obtain the dosing concentrate. However, the agitator blades are prone to mechanical failure after prolonged use, requiring regular cleaning or replacement of parts, resulting in high maintenance costs. Furthermore, the motor-driven agitator requires a speed reducer, which continuously consumes electricity, further increasing energy consumption. To address these issues, an automatic dosing device for mine water pretreatment is proposed. Utility Model Content

[0005] In view of this, the present invention provides an automatic dosing device for mine water pretreatment. The present invention adds water and chemicals to the dosing tank, supplies air to the aeration components through the air source of the ceramic membrane, and aerates and stirs the chemical solution in the tank through the aeration pipe, thereby mixing the chemicals in the dosing tank. The chemical solution is then supplied to the raw water pipeline through a metering pump. It can replace the mechanical stirring of the stirring paddle, and the air source of the ceramic membrane can also reduce the energy consumption during chemical mixing.

[0006] To solve the above-mentioned technical problems, this utility model provides an automatic dosing device for mine water pretreatment, including a dosing pipe installed at the outlet of a dosing tank, the outlet of the dosing pipe being connected to a raw water pipe, a metering pump installed on the dosing pipe, an aeration component installed at the bottom and top of the dosing tank, an air supply pipe connected to the lower surface of the bottom aeration component, each aeration component including an air distribution chamber, the air distribution chamber being a hollow cube, an aeration pipe connected to each of the four sides of the air distribution chamber, an air vent pipe connected between the air distribution chambers axially, a positioning component installed at the top and bottom of the air vent pipe, and a pair of heating components installed between the aeration pipes located on the same plane, with each heating component arranged crosswise.

[0007] A tee is installed on the raw water pipeline to connect the raw water pipeline to the chemical dosing pipeline. The branch end of the tee is connected to the outlet end of the chemical dosing pipeline.

[0008] A flow meter is installed between the inlet end of the raw water pipeline and the downstream tee. The flow meter is used to detect the flow rate of the raw water in the pipeline. An online turbidity meter is installed next to the flow meter. The online turbidity meter is used to detect the suspended solids content in the raw water pipeline, thereby measuring the turbidity of the raw water.

[0009] An electrical control cabinet is connected to one side of the metering pump. The electrical control cabinet is used to control the equipment on the automatic dosing device. The flow meter and the online turbidity meter are both connected to the electrical control cabinet.

[0010] The gas distribution chamber located at the bottom of the dosing tank is connected to the outlet end of the gas supply pipeline. An electric valve is installed on the gas supply pipeline to control the opening and closing of the gas supply pipeline, thereby controlling the air compressor to supply gas to the gas distribution chamber. An air compressor is installed at the end of the gas supply pipeline to supply gas to the gas distribution chamber and the ventilation pipe.

[0011] Each positioning component includes a positioning ring fixed to the surface of the vent pipe. The positioning ring is used to connect the vent pipe to the positioning rod. A positioning rod is provided on both the left and right sides of the positioning ring. The positioning rod is used to connect the positioning ring to the inner wall of the dosing tank, thereby connecting the vent pipe to the inner wall of the dosing tank and fixing the vent pipe to the gas distribution chamber. Each positioning rod is connected to the inner wall of the dosing tank.

[0012] The heating assembly includes a shaped heat tracing pipe, which is used to heat the liquid medicine in the upper and lower parts of the dosing tank, thereby improving the mixing efficiency of the medicine. The shaped heat tracing pipe and the aeration holes on the aeration pipe are located on the same horizontal plane. Each shaped heat tracing pipe has a fixing frame at its bottom, which is used to connect the shaped heat tracing pipe to the inner wall of the dosing tank, thereby supporting and fixing it. Each fixing frame is connected to the inner wall of the dosing tank.

[0013] A water inlet pipe is connected to the lid of the dosing tank to supply water to the tank. A dosing pipe is located opposite the water inlet pipe to supply the drug concentrate to the tank. A level gauge is located next to the water inlet pipe to measure the liquid level inside the tank.

[0014] In summary, compared with the prior art, this application includes at least one of the following beneficial technical effects:

[0015] 1. By filling the dosing tank with water and adding chemicals, the aeration components are supplied with air through the built-in air source of the ceramic membrane. The chemical solution in the tank is aerated and stirred through the aeration pipe, thereby mixing the chemicals in the dosing tank. The chemical solution is then supplied to the raw water pipeline through the metering pump. This method can replace the mechanical stirring of the agitator, and the built-in air source of the ceramic membrane can also reduce the energy consumption during chemical mixing.

[0016] 2. The positioning ring is used to connect the vent pipe to the positioning rod, and the positioning rod is used to connect the positioning ring to the inner wall of the dosing tank, thereby connecting the vent pipe to the inner wall of the dosing tank and fixing the vent pipe to the gas distribution chamber.

[0017] 3. The irregularly shaped heat tracing pipe is used to heat the liquid medicine in the upper and lower parts of the dosing tank, thereby improving the mixing efficiency of the medicine. The fixing frame is used to connect the irregularly shaped heat tracing pipe to the inner wall of the dosing tank, thereby supporting and fixing it. Attached Figure Description

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

[0019] Figure 2 This is a schematic diagram of the assembly structure of this utility model;

[0020] Figure 3 This utility model Figure 2 A magnified view of part A;

[0021] Figure 4 This is a top sectional view of the present invention;

[0022] Figure 5 This is a side sectional view of the present invention.

[0023] Explanation of reference numerals in the attached drawings: 100, dosing tank; 101, dosing pipeline; 102, metering pump; 103, downstream tee; 104, inlet pipe; 105, dosing pipe; 106, level gauge; 107, raw water pipeline; 200, aeration assembly; 201, air supply pipeline; 202, air distribution chamber; 203, aeration pipe; 204, vent pipe; 205, electric valve; 206, air compressor; 300, positioning assembly; 301, positioning ring; 302, positioning rod; 400, heating assembly; 401, irregularly shaped heat tracing pipe; 402, fixing frame; 500, flow meter; 501, online turbidity meter; 502, electrical control cabinet. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the following will be described in conjunction with the appendices of the embodiments of this utility model. Figures 1-5 The technical solutions of the embodiments of this utility model are clearly and completely described below. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model are within the protection scope of this utility model.

[0025] like Figures 1-5As shown: This embodiment provides an automatic dosing device for mine water pretreatment, including a dosing pipe 101 installed at the outlet of a dosing tank 100. The dosing pipe 101 is used to add flocculant solution to the raw water in the raw water pipe 107. An electric valve 205 is installed between the outlet of the dosing pipe 101 and a metering pump 102. The outlet of the dosing pipe 101 is connected to the raw water pipe 107 via a tee 103. A metering pump 102 is installed on the dosing pipe 101. The metering pump 102 is used to supply the mixed flocculant solution in the dosing tank 100 into the raw water pipe 107. The metering pump 102 and the dosing pipe 102 are connected to the raw water pipe 107. The chemical dosing pipe 101 is connected via a flange. An aeration assembly 200 is installed at both the bottom and top of the dosing tank 100. Multiple aeration assemblies 200 can be installed to ensure uniform mixing during aeration. The aeration assemblies 200 are used to aerate and mix the chemical solution in the dosing tank 100, thereby improving the mixing speed of the chemical solution and water. An air supply pipe 201 is connected to the lower surface of the bottom aeration assembly 200. The air supply pipe 201 supplies air to the air distribution chamber 202 and aeration pipe 203 within the aeration assembly 200. Each aeration assembly 200 includes an air distribution chamber 202, which is used to connect the aeration pipe 203 to the air supply chamber 202. The air pipe 201 is connected to the air distribution chamber 202, which supplies air to each aeration pipe 203. The air distribution chamber 202 and the air supply pipe 201 can be welded together. The bottom of the air distribution chamber 202 can be welded to or bolted to the bottom plate of the dosing tank 100. The air distribution chamber 202 is a hollow cube. An aeration pipe 203 is connected to each of the four sides of the air distribution chamber 202. The aeration pipe 203 and the air distribution chamber 202 can be connected by a threaded seal. The aeration pipe 203 is used to aerate and mix the flocculant stock solution and water in the dosing tank 100. A vent pipe 204 is axially connected between the air distribution chambers 202. The two air distribution chambers 202 are connected to each other, thereby connecting the upper and lower aeration components 200. Multiple aeration components 200 can be set according to the height of the dosing tank 100 to meet the aeration range required for the upper and lower parts of the dosing tank 100. A positioning component 300 is set at the upper and lower parts of the air pipe 204. A pair of heating components 400 are set between the aeration pipes 203 located on the same plane. The heating components 400 are used to heat the liquid in the dosing tank 100, thereby improving the flow of the liquid and preventing excessive contamination of the pipe wall of the dosing pipe 101 by the liquid. Each heating component 400 is arranged crosswise.

[0026] In use, water and chemicals are added to the dosing tank 100. Air is supplied to the aeration component 200 through the air source built into the ceramic membrane. The aeration pipe 203 then evenly aerates and stirs the upper and lower parts of the dosing tank 100, thus mixing the chemicals in the dosing tank 100. Then, by opening the electric valve 205 on the dosing pipe 101, the metering pump 102 is started to supply the chemical solution to the raw water pipe 107. This can replace the mechanical stirring of the agitator. The air source built into the ceramic membrane can also reduce the energy consumption during chemical mixing. It also replaces the motor and agitator, avoiding the need to clean the agitator.

[0027] This embodiment provides an automatic dosing device for mine water pretreatment.

[0028] like Figure 1 , 2 As shown: A tee 103 is installed on the raw water pipeline 107. The tee 103 is heat-fused or welded to the raw water pipeline 107. The tee 103 is used to connect the raw water pipeline 107 to the dosing pipeline 101. The branch end of the tee 103 is connected to the outlet end of the dosing pipeline 101. A flow meter 500 is installed between the inlet end of the raw water pipeline 107 and the tee 103. The flow meter 500 is connected to the raw water pipeline 107 by a threaded seal. The flow meter 500 is used to detect the flow rate of the raw water in the raw water pipeline 107. The flow meter 500 can be an ultrasonic flow meter. An online turbidity meter 501 is installed next to the flow meter 500. The probe on the online turbidity meter 501 is connected to the raw water pipeline 107 by a thread. The online turbidity meter 501 is used to detect the suspended solids content in the raw water pipeline 107, thereby measuring the turbidity of the raw water.

[0029] Its functions are as follows: the tee 103 is used to connect the raw water pipe 107 to the dosing pipe 101; the flow meter 500 is used to detect the flow rate of the raw water in the raw water pipe 107, thereby detecting the raw water flow velocity; and the online turbidity meter 501 is used to detect the suspended solids content in the raw water pipe 107, thereby measuring the raw water turbidity.

[0030] like Figure 1 , 2 As shown: An electrical control cabinet 502 is connected to one side of the metering pump 102. The electrical control cabinet 502 includes a housing, wiring terminals, a PLC controller, relays, power switches, and other components. The electrical control cabinet 502 can be a PLC control cabinet. The electrical control cabinet 502 is electrically connected to the metering pump 102, the online turbidity meter 501, the flow meter 500, the level gauge 106, and other components. The electrical control cabinet 502 is used to control the equipment on the automatic dosing device. The flow meter 500 and the online turbidity meter 501 are both connected to the electrical control cabinet 502.

[0031] Its function is as follows: the electrical control cabinet 502 is used to control the equipment on the automatic dosing device, and the flow meter 500 and the online turbidity meter 501 are both connected to the electrical control cabinet 502.

[0032] like Figure 1 , 2 As shown in Figures 4 and 5: The gas distribution chamber 202 located at the bottom of the dosing tank 100 is connected to the outlet end of the gas supply pipe 201. An electric valve 205 is installed on the gas supply pipe 201. The electric valve 205 is connected to the gas supply pipe 201 through a flange seal. The electric valve 205 is used to control the opening and closing of the gas supply pipe 201, thereby controlling the air compressor 206 to supply air to the gas distribution chamber 202. An air compressor 206 is installed at the end of the gas supply pipe 201. The air compressor 206 can be supplied with air from the air source provided by the ceramic membrane equipment, thereby performing aeration and stirring. The air compressor 206 is used to supply air to the gas distribution chamber 202 and the air pipe 204.

[0033] Its effect is as follows: the electric valve 205 is used to control the opening and closing of the air supply pipeline 201, thereby controlling the air compressor 206 to supply air to the air distribution chamber 202. The air compressor 206 can use the air source provided by the ceramic membrane equipment to supply air, thereby performing aeration and stirring. The air compressor 206 is used to supply air to the air distribution chamber 202 and the air pipe 204.

[0034] like Figure 2 , 3 As shown in Figures 4 and 5: Each positioning component 300 includes a positioning ring 301 fixed to the surface of the vent pipe 204. The positioning ring 301 is welded to the outer wall of the vent pipe 204. The positioning ring 301 is used to connect the vent pipe 204 to the positioning rod 302. A positioning rod 302 is provided on both the left and right sides of the positioning ring 301. One end of the positioning rod 302 is connected to the positioning ring 301 by bolts or welding. The other end of the positioning rod 302 is welded to the inner wall of the dosing tank 100. The positioning rod 302 is used to connect the positioning ring 301 to the inner wall of the dosing tank 100, thereby connecting the vent pipe 204 to the inner wall of the dosing tank 100, and fixing the vent pipe 204 to the gas distribution chamber 202. Each positioning rod 302 is connected to the inner wall of the dosing tank 100.

[0035] Its effect is as follows: the positioning ring 301 is used to connect the vent pipe 204 to the positioning rod 302, and the positioning rod 302 is used to connect the positioning ring 301 to the inner wall of the dosing tank 100, thereby connecting the vent pipe 204 to the inner wall of the dosing tank 100, and fixing the vent pipe 204 and the gas distribution chamber 202.

[0036] like Figure 1 , 2As shown in Figures 3 and 4: The heating assembly 400 includes a shaped heat tracing pipe 401, which can be a horizontal serpentine pipe. The joint end of the shaped heat tracing pipe 401 can be connected to the electrical control cabinet 502 via a wire. The shaped heat tracing pipe 401 is used to heat the liquid medicine in the upper and lower parts of the dosing tank 100, thereby improving the mixing efficiency of the medicine. The shaped heat tracing pipe 401 and the aeration holes on the aeration pipe 203 are located on the same horizontal plane. Each shaped heat tracing pipe 401 has a fixing frame 402 at its bottom. The fixing frame 402 includes two stainless steel support rods and a heat insulation plate. The heat insulation plate is embedded in the tank wall of the dosing tank 100. The fixing frame 402 is welded to the bottom of the shaped heat tracing pipe 401. The fixing frame 402 is used to connect the shaped heat tracing pipe 401 to the inner wall of the dosing tank 100, thereby supporting and fixing it. Each fixing frame 402 is connected to the inner wall of the dosing tank 100.

[0037] Its effects are as follows: the irregularly shaped heat tracing pipe 401 is used to heat the liquid medicine in the upper and lower parts of the dosing tank 100, thereby improving the mixing efficiency of the medicine; the fixing frame 402 is used to connect the irregularly shaped heat tracing pipe 401 to the inner wall of the dosing tank 100, thereby supporting and fixing it.

[0038] like Figure 1 , 2 As shown: A water inlet pipe 104 is connected to the lid of the dosing tank 100. The water inlet pipe 104 and the dosing tank 100 can be heat-fused or welded together. The water inlet pipe 104 is used to supply water to the dosing tank 100. Flanges can be added to the inlets of the water inlet pipe 104 and the dosing pipe 105. The dosing pipe 105 is provided on the opposite side of the water inlet pipe 104. The dosing pipe 105 and the dosing tank 100 can be heat-fused or welded together. The dosing pipe 105 is used to supply the dosing tank 100 with the original drug solution. A level gauge 106 is provided on the side of the water inlet pipe 104. The level gauge 106 can be an ultrasonic level gauge 106. The level gauge 106 can pass through the lid through a thread. The level gauge 106 is used to measure the internal liquid level of the dosing tank 100.

[0039] Its functions are as follows: the water inlet pipe 104 is used to supply water to the dosing tank 100, the dosing pipe 105 is used to supply the drug concentrate to the dosing tank 100, and the level gauge 106 is used to measure the liquid level in the dosing tank 100, thereby preventing the drug concentrate in the dosing tank 100 from overflowing. When the liquid level is high, an alarm is automatically triggered.

[0040] Working principle: The dosing pipeline 101 connects to the mine's raw water pipeline 107. A flow meter 500 and an online turbidity meter 501 are installed on the raw water pipeline 107 to analyze its flow rate, velocity, and turbidity. Based on the set parameters, the frequency conversion flow rate of the metering pump 102 or its automatic stroke is adjusted to achieve precise dosing of the chemicals. The valve on the dosing pipeline is controlled to open and close, and the metering pump 102 pumps the flocculating solution in the dosing tank 100 to the raw water pipeline 107, thus achieving automatic dosing of the mine's raw water. Water is first added to the dosing tank 100, then the chemical concentrate is added. The electric valve 205 on the air supply pipeline 201 is opened, supplying air through the gas source integrated into the ceramic membrane. Air is supplied through pipe 201, which in turn supplies air to the aeration pipes 203 through the air distribution chamber 202 in the aeration component 200. This air then evenly aerates and stirs the upper and lower parts of the dosing tank 100 through the aeration pipes 203. The shaped heat tracing pipe 401 is then opened to heat the mixed chemicals, thereby improving the mixing effect and mixing the chemicals in the dosing tank 100. Finally, by opening the electric valve 205 on the dosing pipe 101, the metering pump 102 is started to supply the chemical solution to the raw water pipe 107. This can replace the mechanical stirring of the agitator. The air source provided by the ceramic membrane can also reduce the energy consumption during chemical mixing. It also replaces the motor and agitator, avoiding the need to clean the agitator.

[0041] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0042] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. An automatic dosing device for mine water pretreatment, comprising a dosing pipe (101) arranged at the water outlet end of a dosing barrel (100), the water outlet end of the dosing pipe (101) being in communication with a raw water pipe (107), and a metering pump (102) being arranged on the dosing pipe (101), characterized in that: The medicated barrel (100) is provided with an aeration assembly (200) on the bottom and the upper part, the lower surface of the aeration assembly (200) on the bottom is communicated with a gas supply pipeline (201), each aeration assembly (200) comprises a gas distribution chamber (202), the gas distribution chamber (202) is a hollow cube, each side of the gas distribution chamber (202) is communicated with an aeration pipe (203), the upper part and the lower part of the gas distribution chamber (202) are provided with a positioning assembly (300), a pair of heating assemblies (400) are arranged between the aeration pipes (203) on the same plane, and each heating assembly (400) is arranged in cross.

2. The automatic reagent feeding device for mine water pretreatment according to claim 1, characterized in that: The raw water pipeline (107) is provided with a water following tee (103), and the branch end of the water following tee (103) is communicated with the water outlet end of the medicated pipeline (101).

3. An automatic reagent feeding device for mine water pretreatment according to claim 2, characterized in that: The water inlet end of the raw water pipeline (107) and the water following tee (103) are provided with a flow meter (500), and the flow meter (500) is provided with an online turbidity meter (501) on the side.

4. An automatic reagent feeding device for mine water pretreatment according to claim 3, characterized in that: One side of the metering pump (102) is connected with an electric control cabinet (502), and the flow meter (500) and the online turbidity meter (501) are connected with the electric control cabinet (502).

5. An automatic reagent feeding device for mine water pretreatment according to claim 4, characterized in that: The gas distribution chamber (202) at the bottom of the medicated barrel (100) is communicated with the gas outlet end of the gas supply pipeline (201), the gas supply pipeline (201) is provided with an electric valve (205), and the end of the gas supply pipeline (201) is provided with an air compressor (206).

6. An automatic reagent feeding device for mine water pretreatment according to claim 5, characterized in that: Each positioning assembly (300) comprises a positioning ring (301) fixed on the surface of the air pipe (204), and the left and right sides of the positioning ring (301) are provided with a positioning rod (302), and each positioning rod (302) is connected with the inner wall of the medicated barrel (100).

7. An automatic reagent feeding device for mine water pretreatment according to claim 6, characterized in that: The heating assembly (400) comprises a special-shaped heat tracing pipe (401), the special-shaped heat tracing pipe (401) and the aeration hole on the aeration pipe (203) are located on the same horizontal plane, the bottom of each special-shaped heat tracing pipe (401) is provided with a fixing frame (402), and each fixing frame (402) is connected with the inner wall of the medicated barrel (100).

8. An automatic reagent feeding device for mine water pretreatment according to claim 7, characterized in that: The barrel cover of the medicated barrel (100) is communicated with a water inlet pipe (104), the opposite sides of the water inlet pipe (104) are provided with a dosing pipe (105), and the side of the water inlet pipe (104) is provided with a liquid level meter (106).

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