Automatic coagulant adding device for waterworks

Abstract

The utility model relates to the technical field of coagulant feeding, in particular to a waterworks coagulant automatic feeding device which comprises a feeding hopper, a feeding pipe, an additive storage tank, a supporting block, an external expansion support, a weighing sensor and a stirring assembly. The two sides of the bottom of the feeding hopper are fixedly connected with the top of the supporting block, and the feeding pipe is installed at the lower end of a discharging opening of the feeding hopper; the additive storage tank is arranged on the inner side of the external expansion support, and the weighing sensor is installed on the inner sides of the external expansion support and the supporting block. According to the automatic coagulant feeding device for the waterworks, the mass change of coagulant dry powder in the feeding hopper is monitored in real time through the weighing sensors integrated on the supporting block and the external expansion support, the real-time concentration is inversely calculated according to the total mass of a solution in the storage tank, and the water is automatically supplemented to the target proportion; the stirring fan blades driven by the direct-current motor adopt a double-layer inclined paddle design, torque is transmitted through the connecting shaft, and an axial and radial composite flow field is formed, so that a full mixing effect is achieved.

Description

Technical Field

[0001] This application relates to the field of coagulant dosing technology, and in particular to an automatic coagulant dosing device for a waterworks. Background Technology

[0002] In the water purification process of a waterworks, a certain amount of coagulant needs to be added to the raw water according to the water quality, so that it can be mixed evenly with the water. Through the reaction, the colloids and other impurities in the raw water form flocs, which are then removed by sedimentation in subsequent processes.

[0003] A search revealed that CN220432484U discloses an automatic coagulant dosing device for waterworks. This device opens during material feeding to prevent premature flocculant leakage, ensuring feeding accuracy. It also disperses accumulated flocculant during feeding, preventing buildup from affecting the feeding speed and further guaranteeing feeding accuracy and water quality. Specifically, when feeding is required, an external controller operates the drive mechanism, causing an L-shaped plate to move. This movement, via a connecting rod, moves a slider in a chute, pushing a baffle to rotate and open, simultaneously releasing the flocculant from the open position. The L-shaped plate continues to move until it engages with a rack and connecting gear, causing the connecting shaft to rotate. This, in turn, causes the rotating shaft to rotate via meshing bevel gears, which in turn disperses the flocculant above through the rotating blades.

[0004] Regarding the aforementioned technologies, the inventors believe that the following technical defects exist that need to be improved: the aforementioned device only serves the purpose of stirring and adding flocculants, but it does not have a related weighing structure to ensure the quantitative addition of coagulants, nor a related solvent impurity filtration structure to ensure the purity of the added solvent, thereby reducing product quality. Summary of the Invention

[0005] This application provides an automatic coagulant dosing device for waterworks to improve the following technical problems: the above-mentioned device only plays the role of stirring and adding flocculant, but it does not have a related weighing structure to ensure the quantitative addition of coagulant, nor a related solvent impurity filtration structure to ensure the purity of the added solvent, thereby reducing product quality.

[0006] This application provides an automatic coagulant dosing device for a waterworks, which adopts the following technical solution:

[0007] An automatic coagulant dosing device for a waterworks includes a feeding hopper, a feed pipe, an additive storage tank, a support block, an expansion bracket, a weighing sensor, and a stirring assembly. The bottom two sides of the feeding hopper are fixedly connected to the top of the support block. The feed pipe is installed at the lower end of the discharge port of the feeding hopper. The additive storage tank is located inside the expansion bracket. The weighing sensor is installed inside the expansion bracket and the support block. The stirring assembly is installed inside the additive storage tank. A filter assembly is also provided on the top of the additive storage tank.

[0008] The feeding hopper is used to receive solid coagulant, the feed pipe is used to connect the feeding hopper and the filter assembly, the additive storage tank is used to store the dissolved coagulant solution, the support block is integrated with the weighing sensor and bears the vertical load of the feeding hopper and the feed pipe, the weighing sensor is used to monitor the total mass of the coagulant inside the feeding hopper in real time, the stirring assembly is used to ensure that the agent is completely dissolved, and the filter assembly is used to remove suspended solids, organic matter and particulate impurities from the solvent and ensure the purity of the solution.

[0009] In one feasible technical solution of this application, the filter assembly includes a material box, a filter sheet, a cover plate, a connecting plate and a vibration motor. The vibration motor is threadedly connected to one side of the connecting plate, the inner side of the connecting plate is threadedly connected to the surface of the filter sheet, the cover plate is threadedly connected to the outer side of the material box, and the top of the material box is slidably connected to the surface of the feed pipe.

[0010] In one feasible technical solution of this application, the stirring assembly includes a DC motor, a connecting shaft, and stirring blades. The DC motor is installed at the bottom center of the additive storage tank, the connecting shaft is fixedly connected above the output end of the DC motor, and the stirring blades are welded to the outer wall of the connecting shaft and used for stirring the solvent.

[0011] In one feasible technical solution of this application, a check valve is also installed on the outside of the feed pipe.

[0012] In one feasible technical solution of this application, two sets of weighing sensors are provided, and the two sets of weighing sensors are symmetrically distributed on both sides of the top of the outer expansion bracket.

[0013] In summary, this application includes at least one of the following beneficial technical effects:

[0014] This device uses a weighing sensor integrated into the support block and the external bracket to monitor the change in the mass of coagulant dry powder in the feeding hopper in real time. Based on the total mass of the solution in the storage tank, it calculates the real-time concentration and automatically replenishes water to the target ratio. The stirring fan blades driven by the DC motor adopt a double-layer inclined blade design, which transmits torque through the connecting shaft to form a composite axial and radial flow field. In addition, the check valve installed on the outside of the feed pipe can prevent the backflow of solvent from causing distortion of the weighing data and ensure that the metering process is not affected by fluid pressure. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of the automatic coagulant dosing device for a waterworks according to an embodiment of this application.

[0017] Figure 2 This is a front view of the external expansion bracket in the embodiment of this application.

[0018] Figure 3 This is a disassembled diagram of the filtering component in an embodiment of this application.

[0019] Figure 4 This is a cross-sectional view of the inside of the additive storage tank in an embodiment of this application.

[0020] Figure 5 yes Figure 2 Enlarged view of section A.

[0021] Explanation of reference numerals in the attached figures:

[0022] 1. Feed hopper; 2. Feed pipe; 3. Additive storage tank; 4. Support block; 5. External expansion bracket; 6. Weighing sensor;

[0023] 7. Agitator assembly; 71. DC motor; 72. Connecting shaft; 73. Agitator blades;

[0024] 8. Filter assembly; 81. Material box; 82. Filter disc; 83. Cover plate; 84. Connecting plate; 85. Vibration motor; 9. Check valve. Detailed Implementation

[0025] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0026] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0027] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "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 application 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 application.

[0028] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0029] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0030] This application discloses an automatic coagulant dosing device for a waterworks. (Refer to...) Figures 1 to 5 The automatic coagulant dosing device for waterworks includes a feeding hopper 1, a feed pipe 2, an additive storage tank 3, a support block 4, an external expansion bracket 5, a weighing sensor 6, and a stirring assembly 7. The bottom two sides of the feeding hopper 1 are fixedly connected to the top of the support block 4. The feed pipe 2 is installed at the lower end of the discharge port of the feeding hopper 1. The additive storage tank 3 is located inside the external expansion bracket 5. The weighing sensor 6 is installed inside the external expansion bracket 5 and the support block 4. The stirring assembly 7 is installed inside the additive storage tank 3. A filter assembly 8 is also installed on the top of the additive storage tank 3.

[0031] The feeding hopper 1 is used to receive solid coagulant, the feed pipe 2 is used to connect the feeding hopper 1 to the filter assembly 8, the additive storage tank 3 is used to store the dissolved coagulant solution, the support block 4 is integrated with the weighing sensor 6 and bears the vertical load of the feeding hopper 1 and the feed pipe 2, the weighing sensor 6 is used to monitor the total mass of the coagulant inside the feeding hopper 1 in real time, the stirring assembly 7 is used to ensure that the agent is completely dissolved, and the filter assembly 8 is used to remove suspended solids, organic matter and particulate impurities from the solvent and ensure the purity of the solution.

[0032] The filter assembly 8 includes a material box 81, a filter plate 82, a cover plate 83, a connecting plate 84, and a vibration motor 85. The vibration motor 85 is threadedly connected to one side of the connecting plate 84. The inner side of the connecting plate 84 is threadedly connected to the surface of the filter plate 82. The cover plate 83 is threadedly connected to the outer side of the material box 81. The top of the material box 81 is slidably connected to the surface of the feed pipe 2.

[0033] The stirring assembly 7 includes a DC motor 71, a connecting shaft 72, and stirring blades 73. The DC motor 71 is installed at the bottom center of the additive storage tank 3. The connecting shaft 72 is fixedly connected above the output end of the DC motor 71. The stirring blades 73 are welded to the outer wall of the connecting shaft 72 and are used to stir the solvent.

[0034] A check valve 9 is also installed on the outside of the feed pipe 2.

[0035] Two sets of weighing sensors 6 are provided, and the two sets of weighing sensors 6 are symmetrically distributed on the top two sides of the outer support 5.

[0036] The general process of using the automatic coagulant dosing device for waterworks according to this application embodiment is as follows:

[0037] Unscrew the cover plate 83 and install the filter plate 82 into the inner cavity of the material box 81 via the connecting plate 84. The two sets of symmetrically distributed weighing sensors 6 are zeroed under no-load conditions. During the dosing stage, solid coagulant is manually or via conveyor belt added to the feeding hopper 1, and the weighing sensors 6 display the mass in real time. When the specified dosage is added, the PLC controls the check valve 9 to open, and the dry powder falls into the filter assembly 8 through the feed pipe 2. When the dry powder passes through the filter plate 82, large particles are intercepted, and the raw water backwashes the filter layer, and the dissolved agent enters the additive storage tank 3. The DC motor 71 starts, driving the connecting shaft 72 and the stirring blade 73 to rotate, forming a vortex to accelerate dissolution; the weighing sensors 6 continuously monitor the total mass of the additive storage tank 3; when the pressure difference is still large after the vibration motor 85 has been working continuously, the cover plate 83 needs to be manually unscrewed to replace the filter plate 82, thus completing the disassembly and installation operation.

[0038] The beneficial technical effects of the automatic coagulant dosing device for waterworks according to the embodiments of this application are roughly as follows:

[0039] This device uses a weighing sensor 6 integrated into the support block 4 and the outer bracket 5 to monitor the change in the mass of coagulant dry powder in the feeding hopper 1 in real time. Based on the total mass of the solution in the storage tank, the real-time concentration is calculated and the water is automatically replenished to the target ratio. The stirring fan blade 73 driven by the DC motor 71 adopts a double-layer inclined blade design, which transmits torque through the connecting shaft 72 to form an axial and radial composite flow field. In addition, the check valve 9 installed on the outside of the feed pipe 2 can prevent the backflow of solvent from causing distortion of the weighing data and ensure that the metering process is not affected by fluid pressure.

[0040] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. An automatic coagulant dosing device for a waterworks, characterized in that, The device includes a feeding hopper (1), a feed pipe (2), an additive storage tank (3), a support block (4), an expansion bracket (5), a weighing sensor (6), and a stirring assembly (7). The bottom two sides of the feeding hopper (1) are fixedly connected to the top of the support block (4). The feed pipe (2) is installed at the lower end of the discharge port of the feeding hopper (1). The additive storage tank (3) is located inside the expansion bracket (5). The weighing sensor (6) is installed inside the expansion bracket (5) and the support block (4). The stirring assembly (7) is installed inside the additive storage tank (3). A filter assembly (8) is also provided on the top of the additive storage tank (3). The feeding hopper (1) is used to receive solid coagulant, the feed pipe (2) is used to connect the feeding hopper (1) and the filter assembly (8), the additive storage tank (3) is used to store the dissolved coagulant solution, the support block (4) is integrated with the weighing sensor (6) and bears the vertical load of the feeding hopper (1) and the feed pipe (2), the weighing sensor (6) is used to monitor the total mass of the coagulant inside the feeding hopper (1) in real time, the stirring assembly (7) is used to ensure that the agent is completely dissolved, and the filter assembly (8) is used to remove suspended solids, organic matter and particulate impurities in the solvent and ensure the purity of the solution.

2. The automatic coagulant dosing device for waterworks according to claim 1, characterized in that, The filter assembly (8) includes a material box (81), a filter sheet (82), a cover plate (83), a connecting plate (84), and a vibration motor (85). The vibration motor (85) is threaded to one side of the connecting plate (84). The inner side of the connecting plate (84) is threaded to the surface of the filter sheet (82). The cover plate (83) is threaded to the outer side of the material box (81). The top of the material box (81) is slidably connected to the surface of the feed pipe (2).

3. The automatic coagulant dosing device for waterworks according to claim 1, characterized in that, The stirring assembly (7) includes a DC motor (71), a connecting shaft (72), and stirring blades (73). The DC motor (71) is installed at the bottom center of the additive storage tank (3). The connecting shaft (72) is fixedly connected above the output end of the DC motor (71). The stirring blades (73) are welded to the outer wall of the connecting shaft (72) and are used to stir the solvent.

4. The automatic coagulant dosing device for waterworks according to claim 1, characterized in that, A check valve (9) is also installed on the outside of the feed pipe (2).

5. The automatic coagulant dosing device for waterworks according to claim 1, characterized in that, The weighing sensor (6) is provided in two sets, and the two sets of weighing sensors (6) are symmetrically distributed on both sides of the top of the outer support (5).

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