Sodium hypochlorite adding device

Abstract

The utility model provides a sodium hypochlorite feeding device, which relates to the technical field of sewage purification, and comprises at least one medicament storage tank and a feeding pipeline, the rear end of the feeding pipeline is connected with a flowmeter, the middle part of the feeding pipeline is provided with an exhaust assembly, and the exhaust assembly comprises a connecting sleeve, a balance tank and an exhaust valve, a liquid inlet pipe and a liquid outlet pipe are arranged at the lower end of the balance tank, the exhaust valve comprises a valve body, an exhaust port, a sliding rod, a sealing valve plate and a valve body spring, a turbulent flow check block is arranged at the upper end of the sliding rod, a spiral groove is formed in the upper side of the inner wall of the valve body, a turbulent flow protrusion is arranged on the outer edge of the turbulent flow check block, and a spiral groove is formed in the spiral groove. The turbulent flow protrusion is installed in the spiral groove in a sliding mode, the lower end of the sliding rod extends downwards to penetrate through the liquid inlet pipe into the connecting sleeve, and a fusiform turbulent flow piece is arranged at the lower end of the sliding rod. The exhaust assembly is arranged in front of the flow meter to remove bubbles, and the bubbles are prevented from entering the flow meter to affect the accuracy of the flow meter.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage purification, in particular to a sodium hypochlorite dosing device. Background Art

[0002] Sodium hypochlorite is mainly used as a disinfectant in water treatment to kill some pathogenic microorganisms and bacteria in the water, ensuring that microbial indicators meet the sanitary standards for drinking water.

[0003] During the dosing process, a metering pump usually accurately controls the dosage of sodium hypochlorite to ensure the accuracy and stability of the dosage. Since sodium hypochlorite easily decomposes into oxygen, bubbles often gather in the delivery pipeline of the dosing device. The bubbles pass through the metering pump, which affects the accuracy of the metering pump. Utility Model Content

[0004] (1) Technical problems solved

[0005] In view of the deficiencies in the prior art, the present invention provides a sodium hypochlorite dosing device, which solves the problems raised in the above background technology.

[0006] (2) Technical solution

[0007] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0008] A sodium hypochlorite dosing device includes at least one chemical storage tank, the lower end of the chemical storage tank is connected to a discharge pipe, the end of the discharge pipe is connected to a metering pump, the output end of the metering pump is connected to a dosing pipe, the rear end of the dosing pipe is connected to a flow meter, the middle portion of the dosing pipe is bent upward to form an exhaust bend, the exhaust bend is installed on an exhaust assembly, and the exhaust assembly is installed on the front side of the dosimeter.

[0009] Preferably, the exhaust assembly includes a connecting sleeve, a balancing tank and an exhaust valve, and connecting flanges are provided at both ends of the connecting sleeve, and the connecting flanges are connected to the dosing pipe. The lower end of the balancing tank is provided with a liquid inlet pipe and a liquid discharge pipe, and the liquid inlet pipe and the liquid discharge pipe are evenly connected to the sleeve. The upper end of the liquid inlet pipe extends to the top of the balancing tank, and the upper end of the liquid discharge pipe is flush with the lower side of the inner wall of the balancing tank. The liquid discharge pipe is provided on the rear side of the liquid inlet pipe.

[0010] Preferably, the exhaust valve includes a valve body, the middle part of the valve body is connected to an exhaust port, a sliding rod is provided in the middle part of the valve body, a sealing valve plate is rotatably connected to the sliding rod, the sealing valve plate is slidably installed on the inner wall of the valve body, and a valve body spring is connected between the sealing valve plate and the top of the valve body.

[0011] Preferably, a spoiler block is provided at the upper end of the sliding rod, the valve body spring abuts against the upper end of the spoiler block, a spiral groove is provided on the upper side of the inner wall of the valve body, a spoiler protrusion is provided on the outer edge of the spoiler block, the spoiler protrusion is slidably installed in the spiral groove, the lower end of the sliding rod extends downward through the liquid inlet pipe to the connecting sleeve, and a shuttle-shaped spoiler is provided at the lower end of the sliding rod.

[0012] Preferably, the spiral groove is a vertical lifting groove and a spiral sliding groove that are interconnected from top to bottom, and a placement groove is provided at the bottom of the connecting sleeve, and the shuttle-shaped spoiler is inserted into the placement groove in a concave-convex fitting manner.

[0013] Preferably, the top of the liquid inlet pipe is threadedly connected to a support frame, a guide ring is provided in the middle of the support frame, and the sliding rod is rotatably fitted to pass through the guide ring.

[0014] Preferably, the top of the medicine storage tank is connected to a rehydration tube, the bottom of the side wall of the medicine storage tank is connected to a dilution tube, the dilution tube is connected to a full-automatic water softener, and a stirring impeller is installed inside the medicine storage tank.

[0015] Preferably, an ultrasonic level meter is installed in the medicine storage tank.

[0016] Preferably, a liquid level tube is installed on the outside of the medicine storage tank, and the liquid level tube is connected to the medicine storage tank.

[0017] (3) Beneficial effects

[0018] The utility model provides a sodium hypochlorite dosing device, which has the following beneficial effects:

[0019] 1. In the utility model, an exhaust assembly is arranged on the front side of the flow meter. When sodium hypochlorite flows through the middle of the dosing pipe, the sodium hypochlorite decomposes to produce oxygen bubbles, which enter the balance tank along with the sodium hypochlorite solution through the liquid inlet pipe. The sodium hypochlorite solution accumulates at a certain liquid level in the balance tank, which is higher than the exhaust pipe. The gas and liquid are separated in the balance tank, and the sodium hypochlorite solution flows back to the dosing pipe from the discharge pipe. The gas will remain in the balance tank. As the amount of bubbles entering increases, the pressure in the balance tank gradually increases, pushing the sliding rod upward as a whole until the sealing valve plate rises above the exhaust port, and the exhaust action is completed.

[0020] 2. In the utility model, the sliding rod will be driven to move upward as a whole during the rising process of the sealing valve disc, that is, the spoiler block will rise in the spiral groove. During the rising process, when it is in the vertical lifting groove position, the shuttle-shaped spoiler will rise and disengage from the placement groove and extend into the connecting sleeve. When it is in the spiral slide groove position, it will drive the shuttle-shaped spoiler to rotate, which can break the constant flow state of the sodium hypochlorite solution in the dosing pipe to form a disturbance. At this time, the bubble disturbance attached to the corroded and uneven inner wall of the dosing pipe can be separated and rise to the liquid inlet pipe, avoiding the bubbles in the constant flow state from crossing the liquid inlet pipe along the inner wall of the dosing pipe and entering the flow meter, thereby ensuring the accuracy of the flow meter. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a structural schematic diagram of a sodium hypochlorite dosing device of the utility model;

[0022] Figure 2 It is a structural schematic diagram of the exhaust component in the present utility model.

[0023] In the figure: 1. Chemical storage tank; 2. Discharge pipe; 3. Metering pump; 4. Dosing pipe; 5. Flow meter; 6. Exhaust bend; 7. Connecting sleeve; 8. Balance tank; 9. Exhaust valve; 91. Valve body; 92. Exhaust port; 93. Sealing valve disc; 94. Valve body spring; 10. Connecting flange; 11. Liquid inlet pipe; 12. Liquid discharge pipe; 13. Support frame; 14. Sliding rod; 15. Spoiler block; 16. Spiral groove; 17. Shuttle spoiler; 18. Placement groove. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention.

[0025] The present invention provides a sodium hypochlorite dosing device.

[0026] like Figure 1As shown, it includes at least one chemical storage tank 1, the top of the chemical storage tank 1 is connected to a liquid infusion tube, the bottom of the side wall of the chemical storage tank 1 is connected to a dilution tube, the dilution tube is connected to a fully automatic water softener, and a stirring impeller is installed inside the chemical storage tank 1. By simultaneously replenishing the chemical storage tank 1 with sodium hypochlorite stock solution and soft water and stirring them, the sodium hypochlorite solution in the chemical storage tank 1 can always be kept at a concentration of 5%, and the decomposition and attenuation of sodium hypochlorite can be avoided as much as possible, that is, the amount of bubbles in the dosing pipe 4 is reduced. The lower end of the chemical storage tank 1 is connected to a discharge pipe 2, the end of the discharge pipe 2 is connected to a metering pump 3, the output end of the metering pump 3 is connected to the dosing pipe 4, the rear end of the dosing pipe 4 is connected to a flow meter 5, and the middle part of the dosing pipe 4 is bent upward to have an exhaust bend 6, and an exhaust assembly is installed on the exhaust bend 6. The exhaust bend 6 can make most of the bubbles concentrate on the top of the inner wall of the pipe, and the exhaust assembly is installed on the front side of the dosimeter.

[0027] like Figure 2 As shown, the exhaust assembly includes a connecting sleeve 7, a balancing tank 8 and an exhaust valve 9. Both ends of the connecting sleeve 7 are provided with connecting flanges 10, and the connecting flanges 10 are connected to the dosing pipe 4. The lower end of the balancing tank 8 is provided with a liquid inlet pipe 11 and a liquid discharge pipe 12. The liquid inlet pipe 11 and the liquid discharge pipe 12 are evenly connected to the sleeve 7 and communicated. The upper end of the liquid inlet pipe 11 extends to the top of the balancing tank 8. The upper end height of the liquid inlet pipe 11 is higher than the height of the sodium hypochlorite solution level in the balancing tank 8. The upper end of the liquid discharge pipe 12 is flush with the lower side of the inner wall of the balancing tank 8. The upper end is lower than the height of the sodium hypochlorite solution level in the balance tank 8. The drain pipe 12 is provided on the rear side of the liquid inlet pipe 11. The top of the liquid inlet pipe 11 is threadedly connected to a support frame 13. A screen is provided on the support frame 13, and the sodium hypochlorite solution containing bubbles can smoothly enter the balance tank. A guide ring is provided in the middle of the support frame 13. The sliding rod 14 rotates and fits through the guide ring to position the sliding rod 14, thereby preventing the sliding rod 14 from tilting under the impact of the sodium hypochlorite solution, causing the sealing valve plate 93 to tilt, thereby affecting the sealing performance of the exhaust valve 9.

[0028] The exhaust valve 9 includes a valve body 91, the middle of which is connected to an exhaust port 92, a sliding rod 14 is provided in the middle of the valve body 91, a sealing valve disc 93 is rotatably connected to the sliding rod 14, and the sealing valve disc 93 is slidably installed on the inner wall of the valve body 91, and a valve body spring 94 is connected between the sealing valve disc 93 and the top of the valve body 91.

[0029] A spoiler block 15 is provided at the upper end of the sliding rod 14, and the valve body spring 94 abuts against the upper end of the spoiler block 15. A spiral groove 16 is provided on the upper side of the inner wall of the valve body 91, and a spoiler protrusion is provided at the outer edge of the spoiler block 15. The spoiler protrusion is slidably installed in the spiral groove 16. The lower end of the sliding rod 14 extends downward through the liquid inlet pipe 11 to the connecting sleeve 7, and the lower end of the sliding rod 14 is provided with a shuttle-shaped spoiler piece 17.

[0030] The spiral groove 16 is a vertical lifting groove and a spiral slide groove that are interconnected from top to bottom. The vertical lifting groove and the spiral slide groove have a smooth transition, which ensures that the spoiler protrusion can smoothly enter and exit the vertical lifting groove and the spiral slide groove. A placement groove 18 is provided at the bottom of the connecting sleeve 7. The length of the vertical lifting groove is greater than the depth of the placement groove 18. The shuttle-shaped spoiler 17 is inserted into the placement groove 18 with a concave-convex fit. The spoiler protrusion slides upward in the vertical lifting groove, so that the shuttle-shaped spoiler 17 can be completely separated from the placement groove 18 and then enter the spiral slide groove to drive the shuttle-shaped spoiler 17 to rotate.

[0031] Workflow:

[0032] In the present invention, the sodium hypochlorite solution is supplemented with soft water through the dilution tube and the rehydration tube and stirred so that the solution in the reagent storage tank 1 is always maintained at a set concentration of 5%. At this concentration, the sodium hypochlorite solution can avoid decomposition and attenuation as much as possible, and the number of bubbles in the dosing pipe 4 is reduced.

[0033] When the sodium hypochlorite solution carries some bubbles and flows through the liquid inlet pipe 11 on the connecting sleeve 7, the buoyancy of the bubbles enters the balancing tank 8. Since the outlet of the liquid inlet pipe 11 is higher than the liquid level of the sodium hypochlorite solution in the balancing tank 8, the bubbles and the sodium hypochlorite solution are separated in the space above the liquid level, and the bubbles accumulate in the balancing tank 8. The sodium hypochlorite solution flows back to the dosing pipe 4 from the discharge pipe 12. During the accumulation of bubbles, the pressure in the balancing tank 8 gradually increases, and the pressure acts on the sealing valve plate 93, which will push the sealing valve plate 93, the sliding rod 14, the spoiler block 15 and the shuttle-shaped spoiler 17 to rise as a whole. The spoiler protrusion on the spoiler block 15 slides in the vertical lifting groove and the spiral slide groove. When the spoiler protrusion slides from the vertical lifting groove to the spiral slide groove, the shuttle-shaped spoiler 17 completely breaks away from the placement groove 18. The spoiler protrusion rotates under the limiting action of the spiral slide groove during the rising process, that is, through The sliding rod 14 drives the shuttle-shaped spoiler 17 at the lower end to rise and rotate at the same time. As the shuttle-shaped spoiler 17 rotates, the resistance area of ​​the shuttle-shaped spoiler 17 to the sodium hypochlorite solution will change, forming a disturbance in the dosing pipe 4, which destroys the constant flow in the dosing pipe 4. Since the sodium hypochlorite solution has a certain corrosive effect on the pipe, long-term contact will cause the inner wall of the pipe to be uneven, resulting in the friction between the bubbles and the inner wall of the pipe being greater than the buoyancy of the bubbles, making it impossible for the bubbles to rise to the top of the pipe under the action of buoyancy and then enter the balancing tank 8. These bubbles will enter the flow meter 5 along the inner wall of the pipe under the impact of the constant flow, and the turbulence formed by the shuttle-shaped spoiler 17 will break the constant flow, forming a disordered turbulence, which can effectively separate the bubbles attached to the inner wall of the dosing pipe 4 and allow them to smoothly enter the balancing tank 8 from the liquid inlet pipe 11, separate the bubbles, and ensure that the bubbles do not enter the flow meter 5.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A sodium hypochlorite dosing device, comprising at least one reagent storage tank, the lower end of which is connected to a discharge pipe, the end of which is connected to a metering pump, the output end of which is connected to a dosing pipe, and the rear end of which is connected to a flow meter, characterized in that: An exhaust bend is bent upwards in the middle of the dosing pipe, an exhaust assembly is installed on the exhaust bend, and the exhaust assembly is installed on the front side of the dosimeter.

2. A sodium hypochlorite dosing device according to claim 1, characterized in that: The exhaust assembly includes a connecting sleeve, a balancing tank and an exhaust valve. Connecting flanges are provided at both ends of the connecting sleeve, and the connecting flanges are connected to the dosing pipe. The lower end of the balancing tank is provided with a liquid inlet pipe and a liquid discharge pipe. The liquid inlet pipe and the liquid discharge pipe are evenly connected to the sleeve. The upper end of the liquid inlet pipe extends to the top of the balancing tank, and the upper end of the liquid discharge pipe is flush with the lower side of the inner wall of the balancing tank. The liquid discharge pipe is provided on the rear side of the liquid inlet pipe.

3. A sodium hypochlorite dosing device according to claim 2, characterized in that: The exhaust valve includes a valve body, the middle part of the valve body is connected to an exhaust port, a sliding rod is provided in the middle part of the valve body, a sealing valve plate is rotatably connected to the sliding rod, the sealing valve plate is slidably installed on the inner wall of the valve body, and a valve body spring is connected between the sealing valve plate and the top of the valve body.

4. A sodium hypochlorite dosing device according to claim 3, characterized in that: A spoiler block is provided at the upper end of the sliding rod, the valve body spring abuts against the upper end of the spoiler block, a spiral groove is provided on the upper side of the inner wall of the valve body, a spoiler protrusion is provided on the outer edge of the spoiler block, and the spoiler protrusion is slidably installed in the spiral groove, the lower end of the sliding rod extends downward through the liquid inlet pipe to the connecting sleeve, and the lower end of the sliding rod is provided with a shuttle-shaped spoiler.

5. A sodium hypochlorite dosing device according to claim 4, characterized in that: The spiral groove is a vertical lifting groove and a spiral sliding groove that are interconnected from top to bottom. The bottom of the connecting sleeve is provided with a placement groove, and the shuttle-shaped spoiler is inserted into the placement groove with a concave-convex fit.

6. A sodium hypochlorite dosing device according to claim 5, characterized in that: The top of the liquid inlet pipe is threadedly connected to a support frame, a guide ring is provided in the middle of the support frame, and the sliding rod is rotatably fitted to pass through the guide ring.

7. A sodium hypochlorite dosing device according to claim 6, characterized in that: The top of the medicine storage tank is connected to a rehydration tube, the bottom of the side wall of the medicine storage tank is connected to a dilution tube, the dilution tube is connected to a full-automatic water softener, and a stirring impeller is installed inside the medicine storage tank.

8. A sodium hypochlorite dosing device according to claim 7, characterized in that: An ultrasonic level meter is installed in the medicine storage tank.

9. A sodium hypochlorite dosing device according to claim 8, characterized in that: A liquid level pipe is installed on the outside of the medicine storage tank, and the liquid level pipe is communicated with the medicine storage tank.

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