A stepless adjustable gravity flow liquid flow distribution device

Abstract

The utility model relates to the field of water treatment technology, in particular to a stepless adjustable gravity flow liquid flow distribution device, comprising: an overflow trough and a water distribution trough, the overflow trough and the water distribution trough are arranged adjacently, the side wall of the overflow trough is provided with a water inlet, a rectifying energy dissipation plate facing the water inlet is vertically arranged in the overflow trough, a partition plate is vertically arranged in the water distribution trough, the shape of the partition plate is adapted to the shape of the water distribution trough, the partition plate divides the water distribution trough into two water distribution areas, each water distribution area is provided with a distribution outlet, a position adjustment mechanism is connected to the partition plate, and the position adjustment mechanism can adjust the position of the partition plate in the water distribution trough. The utility model solves the technical problems of reducing energy consumption in liquid flow distribution, resisting total flow and liquid level fluctuations, and stepless adjustment of distribution flow ratio.

Description

Technical Field

[0001] The utility model relates to the technical field of water treatment, in particular to a stepless adjustable gravity flow liquid flow distribution device. Background Art

[0002] Precise liquid flow distribution is a process control requirement often encountered in industrial production and other processes. For example, in the field of municipal engineering, especially in the process of water treatment, water flow needs to be distributed. A common technical means is to use three-way pipes and valve control to distribute and adjust the water flow by controlling the opening and closing degree of the two outlet valves on the three-way pipe. Another relatively accurate flow distribution method is to use water pumps with different rated flow rates for direct quantitative extraction and distribution. In fact, the most commonly used method is to control the distribution flow by controlling the opening and closing of the weir mouth through multiple gates or setting overflow weirs of different lengths. In essence, liquid flow distribution is performed by dividing the flow section. The first type of three-way and valve control water distribution is more accurate when the incoming water pressure is high, but the liquid control flow distribution is unstable at low pressure and small flow. The second type of multi-pump suction water distribution requires more equipment and high energy consumption. Although the third type of flow distribution method is relatively simple, it is also a commonly used technical method in municipal water supply and drainage projects with a scale of thousands or tens of thousands of tons per day, but the accuracy of flow distribution is difficult to guarantee in water treatment facilities with small flow (tens or tens of tons per day), and generally does not have the stepless adjustment function of small flow distribution. However, in the extensive village sewage treatment process, the problem of flow distribution of return sewage and external sewage is often needed. Therefore, there is an urgent need for a device for small-flow liquid flow distribution, which can not only perform accurate distribution in a simple and low-cost manner, but also perform visual and manual stepless adjustment of flow distribution. Summary of the invention

[0003] The utility model provides a stepless adjustable gravity flow liquid flow distribution device, which solves the problems of being unable to reduce energy consumption, unable to resist flow fluctuations and unable to achieve stepless adjustment of flow distribution in the process of small flow liquid flow distribution.

[0004] The technical solution of the utility model is as follows: a stepless adjustable gravity flow liquid flow distribution device, comprising: an overflow trough and a water distribution trough, the overflow trough and the water distribution trough are arranged adjacent to each other, the side wall of the overflow trough is provided with a water inlet, a rectifying and energy dissipating plate facing the water inlet is vertically arranged in the overflow trough, a partition plate is vertically arranged in the water distribution trough, the shape of the partition plate is adapted to the shape of the water distribution trough, the partition plate divides the water distribution trough into two water distribution areas, each water distribution area is provided with a distribution outlet, a position adjustment mechanism is connected to the partition plate, and the position adjustment mechanism can adjust the position of the partition plate in the water distribution trough.

[0005] Furthermore, the position adjustment mechanism includes a threaded rod and a turning handle, a threaded sleeve is vertically embedded on the partition plate, the threaded rod is threadedly connected to the threaded sleeve, the threaded rod is mounted above the water distribution trough through a bearing, and the turning handle is arranged at one end of the threaded rod.

[0006] Furthermore, a scale plate is provided on one side of the water distribution tank close to the overflow tank, and a length scale is provided on the scale plate.

[0007] Furthermore, the scale plate is arranged to be inclined, and the angle between the scale plate and the horizontal direction is an acute angle.

[0008] Furthermore, the resolution of the scale plate is at centimeter level.

[0009] Furthermore, the threaded sleeve is arranged at the midpoint of the radius of the partition plate.

[0010] Furthermore, the rectifying and energy dissipating plate is provided with evenly distributed holes, and the area occupied by the holes is less than half of the total area of ​​the rectifying and energy dissipating plate.

[0011] Furthermore, an overflow plate is vertically arranged between the overflow trough and the water distribution trough.

[0012] Furthermore, the water distribution trough is semi-cylindrical, the partition plate is circular, and the cross-sectional radius of the water distribution trough is equal to the radius of the partition plate.

[0013] Furthermore, a sealing ring is provided on the circumferential side surface of the partition plate.

[0014] Beneficial effects of the utility model:

[0015] (1) The utility model discloses a stepless adjustable gravity flow liquid flow distribution device. To address the shortcomings of existing flow distribution technology for small flow liquids, the device distributes the flow of liquids by gravity flow distribution. Compared with flow control by pipeline pressure flow valve control, it does not require power and pressure, and can achieve low-energy consumption liquid flow distribution.

[0016] (2) The utility model is a stepless adjustable gravity flow liquid flow distribution device, which realizes flow distribution by dividing the overflow port length of the overflow tank, and has visual operation. When distributing small flow, it is more accurate than the coordinated control of flow distribution by a three-way pipe and a valve.

[0017] (3) The utility model is a stepless adjustable gravity flow liquid flow distribution device, which adopts a rectangular overflow weir with a free weir head to cope with the change of the incoming liquid flow, and can achieve a constant flow distribution ratio under the condition of fluctuation of the total incoming liquid flow, that is, it has a stronger adaptability to the fluctuation of the total incoming liquid flow.

[0018] (4) The utility model is a stepless adjustable gravity flow liquid flow distribution device, which solves the problem of liquid level fluctuation affecting overflow uniformity by adopting a rectifying energy dissipating plate. The setting of the rectifying energy dissipating plate improves the device's ability to cope with gravity flow liquid level fluctuation.

[0019] (5) The utility model is a steplessly adjustable gravity flow liquid flow distribution device. The handle can be rotated to steplessly advance the partition plate to divide the overflow port length, thereby adjusting the liquid flow distribution ratio. The distribution ratio can be steplessly adjusted to any ratio, thus realizing the function of adjusting the liquid flow distribution to any ratio.

[0020] (6) The utility model is a stepless adjustable gravity flow liquid flow distribution device, which solves the technical problems of reducing energy consumption in liquid flow distribution, resisting total flow and liquid level fluctuations, and stepless adjustment of distribution flow ratio through the above-mentioned multiple coordinated technical solutions. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the device structure of the utility model.

[0022] Figure 2 It is a front view of the utility model.

[0023] Figure 3 It is a side view of the utility model.

[0024] Figure 4 It is a top view of the utility model. DETAILED DESCRIPTION

[0025] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. The described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0026] In an embodiment of the present utility model, Figure 1 , Figure 2 , Figure 3 and Figure 4 It is a structural schematic diagram provided according to the specific structure of a stepless adjustable gravity flow liquid flow distribution device of the utility model, such as Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the utility model specifically includes:

[0027] The overflow trough and the water distribution trough 8 are arranged adjacent to each other, and an overflow plate 3 is vertically arranged between the overflow trough and the water distribution trough 8.

[0028] The side wall of the overflow trough is provided with a water inlet 1, and a rectifying and energy dissipating plate 2 is vertically provided in the overflow trough facing the water inlet 1. The rectifying and energy dissipating plate 2 is provided with evenly distributed holes, and the area occupied by the holes is less than half of the total area of ​​the rectifying and energy dissipating plate 2. The rectifying and energy dissipating plate 2 is a perforated plate with evenly distributed holes, and the total area of ​​the holes is less than the total area of ​​the non-hole area, so as to ensure that the kinetic energy of the incoming water can be reduced. Under the disturbance of the water inflow in the pipeline, the water surface on the weir of the overflow plate 3 downstream of the rectifying and energy dissipating plate 2 can still remain stable, which is the prerequisite for the stability and accuracy of the subsequent distribution flow.

[0029] A partition plate 52 is vertically arranged in the water distribution tank 8. The shape of the partition plate 52 matches the shape of the water distribution tank 8. The partition plate 52 divides the water distribution tank 8 into two water distribution areas. Each water distribution area is provided with a distribution outlet. Figure 4 As shown, 9 is the distribution outlet of one water distribution area, and 10 is the distribution outlet of another water distribution area. The water distribution trough 8 is semi-cylindrical, and the partition plate 52 is circular. The cross-sectional radius of the water distribution trough 8 is equal to the radius of the partition plate 52. A sealing ring 53 is provided on the circumferential side of the partition plate 52. The sealing ring 53 is a rubber ring, which can be seamlessly coupled with the semi-cylindrical water distribution trough 8. The liquid separated to both sides by the partition plate 52 is effectively isolated to avoid convection, thereby ensuring the accuracy of flow distribution. Among them, a threaded sleeve 51 is vertically embedded on the partition plate 52, which is used to cooperate with the following position adjustment mechanism to realize the position adjustment of the partition plate. The partition plate 52, the sealing ring 53 and the embedded threaded sleeve 51 constitute a partition plate.

[0030] A scale plate 4 is provided on one side of the water distribution trough 8 near the overflow trough, and a length scale is provided on the scale plate 4. The scale plate 4 is tilted, and the angle between the scale plate 4 and the horizontal direction is an acute angle, and the resolution of the scale plate 4 is at the centimeter level. The scale plate 4 is located between the overflow plate 3 and the water distribution trough 8, and the angle between the scale plate and the horizontal direction is an acute angle, and the upper surface is covered with length scales along the axial direction of the water distribution trough 8, and the scale resolution is at the centimeter level, which is convenient for visually distinguishing the position of the dividing plate, and reading the flow distribution ratio is simple and clear.

[0031] A position adjustment mechanism is connected to the partition plate 52, and the position adjustment mechanism can adjust the position of the partition plate 52 in the water distribution tank 8. The position adjustment mechanism includes a threaded rod 61 and a handle 62. The threaded rod 61 is threadedly connected to the threaded sleeve 51. The threaded rod 61 is mounted above the water distribution tank 8 through a bearing 7, and the handle 62 is arranged at one end of the threaded rod 61. The threaded sleeve 51 is arranged at the midpoint of the radius of the partition plate 52. Among them, the partition plate 52 is a hard disc. The center line of the threaded sleeve 51 is perpendicular to the plane of the hard disc and is located at the midpoint of the radius. The eccentric setting of the threaded sleeve 51 can ensure that when the threaded rod 61 is rotated, the entire partition plate 52 does not rotate with the rotation of the threaded rod 61, ensuring that the partition plate 52 cannot rotate freely under the flushing of water flow, and the flow rate is distributed stably.

[0032] The following are practical examples of the present invention:

[0033] The device is located at a 10m 3 / d treatment scale in villages and domestic sewage treatment facilities. Since the tail water at the outlet of the village sewage treatment facility needs to be recirculated at a 100% return ratio of the treatment flow in summer and autumn, it is necessary to allocate half of the tail water flow and return it to the front end. In winter and spring, it is necessary to recirculate at a 50% return ratio of the treatment flow, and it is necessary to allocate one-third of the tail water flow and return it to the front end. Taking winter and spring as an example, during the implementation process, the front-end gravity flow pipe water enters the water inlet 1, and the water passing through the water inlet 1 first passes through the rectifying energy dissipation plate 2. Since the gravity flow water flow fluctuates and has kinetic energy, the water passing through the rectifying energy dissipation plate 2 of the porous plate can maintain a steady flow. The steadily flowing water can smoothly overflow at the upper edge of the overflow plate 3, and the water head on the weir at each location on the upper edge of the overflow plate 3 is consistent, and the overflow flow can be evenly distributed on the upper edge of the overflow plate 3. The water that crosses the overflow plate 3 flows evenly onto the scale plate 4 and evenly enters the water distribution tank 8. The dividing plate composed of the threaded sleeve 51, the dividing plate 52 and the sealing ring 53 in the water distribution tank 8 can divide the water that evenly enters the scale plate 4 into two parts, one part flows out through the distribution port 1 9, and the other part flows out through the distribution port 2 10. Since there is a rubber ring around the dividing plate 52, the circular dividing plate 52 and the cross-sectional circumference radius of the semi-cylindrical water distribution tank 8 are equal, the dividing plate can be seamlessly coupled with the water distribution tank 8, and the water divided by the dividing plate on both sides is effectively isolated to avoid convection. Since the distribution port 1 9 is connected to the return pipe and the distribution port 2 10 is connected to the final water outlet, the amount of water distributed to the distribution port 1 9 should be one-third of the overflow flow of the overflow plate 3. Before distributing water, the threaded sleeve 51 threadedly connected to it should be pushed forward by rotating the turning handle 62 and the threaded rod 61 connected to the turning handle 62. Due to the limiting effect of the bearings 7 on both sides, the position of the threaded rod 61 will not change, and the threaded sleeve 51 thereon will drive the dividing plate to move in the water distribution tank 8. Adjust the position of the dividing plate until the length between the divided plate and the distribution port 9 is one-third of the total length of the water distribution tank 8, that is, one-third of the flow is returned to the front-end facility through the distribution port 9, and the flow distribution operation with a 50% reflux ratio is completed. Similarly, when the reflux ratio needs to be adjusted to 100% in summer and autumn, the dividing plate can be moved to a position where the length between the distribution port 9 and the dividing plate is one-half of the total length by rotating the handle 62, that is, one-half of the flow is returned to the front-end facility through the distribution port 9, and the reflux ratio is adjusted to 100%. The above is only the flow distribution and adjustment process of two channels. By using two or more stepless adjustable gravity flow liquid flow distribution devices in combination, flow distribution of three channels and more channels can be achieved. In short, the stepless adjustable gravity flow liquid flow distribution device does not consume energy when distributing flow. Compared with pipeline pressure flow flow distribution, it is more energy-saving, stable, and accurate, and can cope with changes in incoming water flow and kinetic energy while maintaining a stable distribution ratio. Through the setting of a stepless propulsion structure, stepless adjustment of any ratio of flow distribution can be achieved.The device is simple and stable, and is very valuable in applications such as stepless adjustment of reflux flow in water treatment.

[0034] Finally, it should be noted that the above specific implementation methods are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to examples, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A stepless adjustable gravity flow liquid flow distribution device, characterized in that: include: An overflow trough and a water distribution trough (8), the overflow trough and the water distribution trough (8) being arranged adjacent to each other, a water inlet (1) being arranged on a side wall of the overflow trough, a rectifying energy dissipation plate (2) being arranged vertically in the overflow trough and facing the water inlet (1), a partition plate (52) being arranged vertically in the water distribution trough (8), the shape of the partition plate (52) being adapted to the shape of the water distribution trough (8), the partition plate (52) dividing the water distribution trough (8) into two water distribution areas, each water distribution area being provided with a water distribution outlet, a position adjustment mechanism being connected to the partition plate (52), the position adjustment mechanism being capable of adjusting the position of the partition plate (52) in the water distribution trough (8).

2. The steplessly adjustable gravity flow liquid flow distribution device according to claim 1, characterized in that: The position adjustment mechanism comprises a threaded rod (61) and a rotating handle (62); a threaded sleeve (51) is vertically embedded on the partition plate (52); the threaded rod (61) is threadedly connected to the threaded sleeve (51); the threaded rod (61) is mounted above the water distribution trough (8) via a bearing (7); and the rotating handle (62) is arranged at one end of the threaded rod (61).

3. The steplessly adjustable gravity flow liquid flow distribution device according to claim 2, characterized in that: The threaded sleeve (51) is arranged at the midpoint of the radius of the partition plate (52).

4. The steplessly adjustable gravity flow liquid flow distribution device according to claim 1, characterized in that: A scale plate (4) is provided on one side of the water distribution trough (8) close to the overflow trough, and a length scale is provided on the scale plate (4).

5. The steplessly adjustable gravity flow liquid flow distribution device according to claim 4, characterized in that: The scale plate (4) is arranged tilted, and the angle between the scale plate (4) and the horizontal direction is an acute angle.

6. The steplessly adjustable gravity flow liquid flow distribution device according to claim 4, characterized in that: The resolution of the scale plate (4) is at the centimeter level.

7. The steplessly adjustable gravity flow liquid flow distribution device according to claim 1, characterized in that: The rectifying and energy dissipating plate (2) is provided with evenly distributed holes, and the area occupied by the holes is less than half of the total area of ​​the rectifying and energy dissipating plate (2).

8. The steplessly adjustable gravity flow liquid flow distribution device according to claim 1, characterized in that: An overflow plate (3) is vertically arranged between the overflow trough and the water distribution trough (8).

9. The steplessly adjustable gravity flow liquid flow distribution device according to claim 1, characterized in that: The water distribution trough (8) is semi-cylindrical, the partition plate (52) is circular, and the cross-sectional radius of the water distribution trough (8) is equal to the radius of the partition plate (52).

10. The steplessly adjustable gravity flow liquid flow distribution device according to claim 9, characterized in that: A sealing ring (53) is provided on the circumferential side surface of the partition plate (52).

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