Uniform dosing and mixing device for water channel

Abstract

The utility model discloses a canal dosing and mixing device, which relates to the field of sewage treatment, and comprises a mixing structure arranged in a canal, the mixing structure comprises a support plate, the support plate is provided with a water passing hole, water flow in the canal flows through the water passing hole, the inner circumference of the water passing hole is uniformly provided with a plurality of blades, and the blades are bent towards the downstream direction of the canal; the dosing pipe is arranged on the side, located on the upstream of the supporting plate, of the water channel; according to the uniform mixing device, flowing water flow is drained through the blades on the supporting plate, so that the water flow moves towards the center direction along the surfaces of the blades, meanwhile, the water flow can form a vortex shape on the back faces of the blades under the fluid mechanics effect, the water flow is changed into a turbulent flow state through stable laminar flow grabbing, and medicine and water are sufficiently and uniformly mixed; and the economic cost is not increased and the water channel is not transformed.

Description

Technical Field

[0001] The utility model belongs to the field of sewage treatment, and more specifically relates to a water channel dosing and mixing device. Background Art

[0002] Sewage discharge can have a serious impact on the environment. Untreated sewage contains various organic and inorganic substances, such as suspended solids, organic compounds, nutrients and heavy metals. These pollutants not only affect the balance of the aquatic ecosystem, but also pose a threat to human and biological health. Sewage treatment can make use of the recyclable resources in sewage. The steel industry has a complex process, and each process generates a lot of wastewater. After deep processing in the sewage treatment plant, zero discharge of wastewater from the steel industry can be achieved.

[0003] In a certain production process of a sewage treatment plant, sewage needs to flow from the clarifier to the filter tank, and the sewage needs to be treated with drugs in the middle to ensure the stable operation of the next process and the water quality meets the standard. Since the drug is added at a single point, the water flow is in a laminar stable state, and the drug addition will be uneven and concentrated in the upper part of the water flow, resulting in substandard water quality; it is also possible to increase the amount of drug added to meet the process requirements, but it will cause deposition at the bottom of the canal and corrode the inner wall of the canal. If the width of the canal is increased, this will increase the floor area, which may lead to an increase in design space, affect the overall layout, and increase the design cost; in addition, adding drug addition points will lead to more failures, and at the same time, it will be more difficult to control the amount of drug added, and the drug addition will be unstable, resulting in increased drug costs, and also increased repair and maintenance costs. Utility Model Content

[0004] The purpose of the utility model is to provide a device for mixing medicine in a water channel in view of the deficiencies in the prior art. The device guides the water flowing through the blades on a support plate, so that the water flows along the surface of the blades toward the center. At the same time, under the action of fluid mechanics, a vortex is formed on the back of the blades, so that the water flow changes from a stable laminar flow to a turbulent state, thereby achieving full mixing of the medicine and water without increasing economic costs or modifying the water channel.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a water channel dosing and mixing device, comprising:

[0006] A mixing structure is arranged in the water channel, the mixing structure comprises a support plate, a water hole is provided on the support plate, the water in the water channel flows through the water hole, a plurality of blades are evenly arranged on the inner periphery of the water hole, and the blades are bent toward the downstream direction of the water channel;

[0007] The dosing pipe is arranged on one side of the water channel located upstream of the support plate.

[0008] Optionally, the size of the support plate is 1200mm*1200mm, and the outer periphery of the support plate fits with the side and bottom surfaces of the water channel.

[0009] Optionally, the bending angle of each blade is the same, and the bending angle of the blade is 40°-50°.

[0010] Optionally, the head of the blade is 250 mm away from the center of the support plate.

[0011] Optionally, the root of the blade is 100 mm away from the edge of the support plate.

[0012] Optionally, the distance between roots of adjacent blades is not less than 5°.

[0013] Optionally, the curvature of the root of the blade is not greater than 15°.

[0014] Optionally, the middle distance between adjacent blades is smaller than the root distance, and the head distance between adjacent blades is larger than the root distance.

[0015] Optionally, a variable frequency water pump is also provided in the water channel.

[0016] Optionally, the support plate is made of steel plate.

[0017] The utility model provides a water channel dosing and mixing device, and its beneficial effect is that: in the water channel dosing and mixing device, when the water after dosing flows through the water hole of the support plate, the water flow state changes from the stable fluid state of laminar flow to the active turbulent state, and the medicine and water are fully mixed in the turbulent state to achieve the mixing effect, so that the medicine and water can be fully mixed. According to the water quality detection after the final chemical reaction, it can be accurately judged whether the amount of dosing is more or less. By adjusting the amount of dosing, the amount of dosing can be accurately adjusted to the accurate value, and the control is more precise and convenient. Compared with the existing improvement scheme, the water channel dosing and mixing device has a simple structure, and the mixing function can be achieved without increasing the area of ​​the water channel, and there is no need to increase the dosing point. A single point can achieve stable dosing, and the dosing control accuracy is high, which can effectively reduce the amount of dosing and reduce the cost. After the medicine and water are fully mixed, there is no problem of the medicine gathering at the bottom of the water channel to corrode the water channel production capacity, thereby reducing the maintenance cost of the water channel.

[0018] Other features and advantages of the present invention will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above and other objects, features and advantages of the present invention will become more apparent through a more detailed description of exemplary embodiments of the present invention in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments of the present invention.

[0020] Figure 1 The schematic diagram of the structure of a device for adding medicine and mixing in a water channel according to an embodiment of the utility model is shown.

[0021] Figure 2 A structural schematic diagram of a support plate according to an embodiment of the utility model is shown.

[0022] Figure 3 The diagram shows the state change of a water channel dosing and mixing device when water flows through it according to an embodiment of the utility model.

[0023] Figure 4 A schematic diagram showing the state change of a blade when water flows through it according to an embodiment of the utility model is shown.

[0024] Figure 5 The present invention shows the effect diagram of step 1 of manufacturing a device for dosing and mixing drugs in a water channel according to an embodiment of the present invention.

[0025] Figure 6 The present invention shows the effect diagram of step 2 of manufacturing a device for dosing and mixing drugs in a water channel according to an embodiment of the present invention.

[0026] Description of reference numerals:

[0027] 1. Water channel; 2. Support plate; 3. Water hole; 4. Blades; 5. Dosing pipe; 6. Head; 7. Root. DETAILED DESCRIPTION

[0028] The preferred embodiments of the present invention will be described in more detail below. Although the preferred embodiments of the present invention are described below, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to make the present invention more thorough and complete, and to fully convey the scope of the present invention to those skilled in the art.

[0029] The utility model provides a water channel dosing and mixing device, comprising:

[0030] A mixing structure is arranged in the water channel, and the mixing structure includes a support plate, and a water hole is arranged on the support plate, and the water in the water channel flows through the water hole, and a plurality of blades are evenly arranged on the inner periphery of the water hole, and the blades are bent toward the downstream direction of the water channel;

[0031] The dosing pipe is arranged on one side of the water channel located upstream of the support plate.

[0032] Specifically, the drug adding and mixing device adds a support plate into the water channel, and allows all the water in the water channel to pass through the water holes. In this way, when the drug adding pipe adds drugs into the water channel, the water with drugs flows over the blades, and the water changes its flow direction along the curved surface of the blades. Since the heads of the blades are pointed and bent toward the downstream direction of the water channel, the water flows along the surface of the blades toward the center, and at the same time, under the action of fluid mechanics, it forms a vortex on the back of the blades, and the water flow changes from a stable laminar flow to a turbulent state. The originally layered water flow will enter other layers, and the originally stable water flow will become an unstable water flow, thereby achieving a mixing effect of the drug and the water flow.

[0033] Optionally, the size of the support plate is 1200mm*1200mm, and the outer periphery of the support plate fits with the side and bottom surfaces of the channel.

[0034] Optionally, the bending angle of each blade is the same, and the bending angle of the blade is 40°-50°.

[0035] Optionally, the head of the blade is 250 mm away from the center of the support plate.

[0036] Optionally, the root of the blade is 100 mm away from the edge of the support plate.

[0037] Specifically, the support plate needs to be completely placed horizontally in the canal, so that the horizontal side and bottom edges of the support plate are sealed and connected to the side and bottom of the canal, and the sewage flowing in the canal can only pass through the water hole. The blades are evenly distributed on the axis of the water hole, and the bending angle of each blade is the same, all maintained between 40° and 50°. The head line of all the curved blades forms a circle with a radius of 250mm, and the root line of all the curved blades forms a circle with a minimum distance of 100mm from the edge of the support plate; the blades are triangular, rotated at a certain angle, and bent and tilted toward the downstream direction of the canal, so that after the water flows through the water hole, the flow angle of the water changes along the surface of the blade, and the water rotates inward to form a vortex.

[0038] Optionally, the distance between roots of adjacent blades is not less than 5°.

[0039] Optionally, the curvature of the root of the blade is no greater than 15°.

[0040] Specifically, the blades on the support plate are bent 45° toward the downstream direction of the water channel, and the root interval of adjacent blades is 5°. The angle covered by the root angle of each blade is 15°, so that at least 18 fan-shaped blades can be formed on the support plate. Such blades on the support plate are like the blades of an electric fan twisted from the outside to the inside. Such blades can guide the flowing water to rotate, and the sewage passing through the water hole is converted into a turbulent state.

[0041] Optionally, the middle distance between adjacent blades is smaller than the root distance, and the head distance between adjacent blades is larger than the root distance.

[0042] Optionally, a variable frequency water pump is also provided in the water channel.

[0043] Specifically, according to the calculation formula of Reynolds number Re:

[0044]

[0045] Among them, ρ and μ are the density and viscosity coefficient of the fluid respectively, which are related to the type of fluid, and v is the velocity of the fluid flow, which is the main factor directly affecting the size of the Reynolds number Re. When the Reynolds number Re<2300, the water flow is in a laminar state, and when the Reynolds number <2300, the water flow is in a turbulent state; the water pump increases the output power of the water pump according to the time of dosing in the dosing pipe, thereby transforming the water flow into a turbulent state, allowing the drug and sewage to be mixed evenly.

[0046] Optionally, the support plate is made of steel plate.

[0047] Specifically, the support plate is made of steel plate and is cut according to the setting parameters of the blades. Finally, the blades are bent toward the downstream direction of the channel, so that blades with a certain strength can be formed. When water flows through the water holes, the water flow is affected by the blades, so that the water flow will flow along the surface of the blades, causing the water flow to change from laminar flow to unstable flow, forming a turbulent state.

[0048] Example

[0049] like Figures 1 to 6 As shown, the utility model provides a water channel dosing and mixing device, comprising:

[0050] A mixing structure is arranged in the water channel 1, and the mixing structure includes a support plate 2, and a water hole 3 is provided on the support plate 2. The water in the water channel 1 flows through the water hole 3. A plurality of blades 4 are evenly arranged on the inner periphery of the water hole 3, and the blades 4 are bent toward the downstream direction of the water channel 1;

[0051] The dosing pipe 5 is arranged on one side of the water channel 1 located upstream of the support plate 2 .

[0052] In this embodiment, the size of the support plate 2 is 1200 mm*1200 mm, and the outer periphery of the support plate 2 fits with the side and bottom surfaces of the water channel 1 .

[0053] In this embodiment, the bending angle of each blade 4 is the same, and the bending angle of the blade 4 is 40°-50°.

[0054] In this embodiment, the head 6 of the blade 4 is 250 mm away from the center of the supporting plate 2 .

[0055] In this embodiment, the root 7 of the blade 4 is 100 mm away from the edge of the support plate 2 .

[0056] In this embodiment, the interval between the roots 7 of adjacent blades 4 is not less than 5°.

[0057] In this embodiment, the curvature of the root 7 of the blade 4 is no greater than 15°.

[0058] In this embodiment, the distance between the middle portions of adjacent blades 4 is smaller than the distance between the roots 7 , and the distance between the heads 6 of adjacent blades 4 is larger than the distance between the roots 7 .

[0059] In this embodiment, a variable frequency water pump is also provided in the water channel 1 .

[0060] In this embodiment, the support plate 2 is made of steel plate.

[0061] In summary, the production process of the water channel dosing and mixing device is as follows: 8mm thick steel plate is used for production, and a square steel plate of 1.2m*1.2m is cut out. Figure 5 Cut in a manner to leave a circle of blades around the water hole 3. The blade is triangular, the inner radius r1 of the triangle tip is 0.1m, the outer radius r2 of the triangle root is 0.5m, and the tip vertex is located at the intersection of the perpendicular bisector of the bottom chord and the inner circle of the tip, so that 18 fan-shaped blades can be formed, the interval angle between the tip of each blade is 20°, the fan angle θ1 of the root of the blade is 15°, and the interval θ2 between adjacent blades is 5°; then according to Figure 6 As shown, all blades are bent 45° to one side, and each blade is twisted inward at the same angle, just like the twisted shape of the blades of an electric fan from the outer end to the inner end, and the inner circle radius r3 of the head of the bent blade is expanded to 0.25m. In this way, the support plate made of steel plate is placed in the water channel, and the laminar flow can be transformed into a turbulent state after the water flow passes through, thereby achieving the effect of mixing the medicine and water.

[0062] The various embodiments of the utility model have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes are obvious to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments.

Claims

1. A water channel dosing and mixing device, characterized in that: include: A mixing structure is arranged in the water channel, the mixing structure comprises a support plate, a water hole is provided on the support plate, the water in the water channel flows through the water hole, a plurality of blades are evenly arranged on the inner periphery of the water hole, and the blades are bent toward the downstream direction of the water channel; The dosing pipe is arranged on one side of the water channel located upstream of the support plate.

2. The water channel dosing and mixing device according to claim 1, characterized in that: The size of the support plate is 1200mm*1200mm, and the outer periphery of the support plate fits with the side and bottom surfaces of the water channel.

3. The water channel dosing and mixing device according to claim 2, characterized in that: The bending angle of each blade is the same, and the bending angle of the blade is 40°-50°.

4. The water channel dosing and mixing device according to claim 3, characterized in that: The head of the blade is 250 mm away from the center of the support plate.

5. The water channel dosing and mixing device according to claim 3, characterized in that: The root of the blade is 100 mm away from the edge of the support plate.

6. The water channel dosing and mixing device according to claim 3, characterized in that: The distance between the roots of adjacent blades is not less than 5°.

7. The water channel dosing and mixing device according to claim 3, characterized in that: The curvature of the root of the blade is no greater than 15°.

8. The water channel dosing and mixing device according to claim 3, characterized in that: The middle distance between adjacent blades is smaller than the root distance, and the head distance between adjacent blades is larger than the root distance.

9. The water channel dosing and mixing device according to claim 1, characterized in that: A variable frequency water pump is also arranged in the water channel.

10. The water channel dosing and mixing device according to claim 1, characterized in that: The support plate is made of steel plate.

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