Wastewater treatment tank convenient for diversion

Abstract

The utility model relates to the technical field of wastewater treatment, in particular to a wastewater treatment tank convenient for diversion, which comprises a first treatment tank unit, a second treatment tank unit and a weir crest, a weir gate is arranged right above the weir crest, adjusting components are arranged on two sides of the weir crest, each adjusting component comprises an adjusting tank, a floating body is accommodated in the adjusting tank, and a water inlet is formed in the adjusting tank. The adjusting tank is communicated with the second treatment tank unit through a communicating pipe; the balancing weight is connected with a connecting rod through a fixed pulley assembly, the connecting rod penetrates through a strip-shaped through groove formed in the fixing plate and then is connected with a sliding block, the connecting rod can slide up and down along the strip-shaped through groove, and movement of the floating body is transmitted to the weir gate through a gear and rack assembly; the weir gate is matched with the adjusting assembly, the floating body moves to drive the weir gate to move through the gear and rack assembly, then the water flow section area of the weir crest is changed, and the water flow entering the second treatment pond unit is adjusted till the water level in the second treatment pond unit is adjusted to the set water level.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, specifically to a wastewater treatment tank that facilitates flow guidance. Background Technology

[0002] Wastewater treatment ponds are infrastructure used to purify sewage or industrial wastewater. They remove pollutants through physical, chemical, or biological methods to meet discharge or reuse standards. Depending on the process, they are divided into multiple treatment pond units, such as filtration ponds, coagulation ponds, sedimentation ponds, and biological treatment ponds. In existing technologies, to guide water flow and achieve the desired flow state, guide walls or baffles are installed in the treatment pond, and triangular or sawtooth weirs are installed between treatment pond units. Triangular or sawtooth weirs can not only guide the direction of water flow and avoid short-circuiting or turbulence, but also enable precise flow control, stable water level, and uniform water distribution. Therefore, triangular or sawtooth weirs are widely used in existing wastewater treatment ponds.

[0003] However, the existing triangular or sawtooth weirs have a fixed cross-sectional area for water flow. Changes in the upstream water level directly affect the flow rate into the downstream treatment unit. It is impossible to change the cross-sectional area of ​​the weir according to the downstream water level to regulate the flow rate and thus stabilize the downstream water level. Utility Model Content

[0004] The purpose of this invention is to provide a wastewater treatment pond that can change the cross-sectional area of ​​the weir flow and facilitates flow guidance, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A wastewater treatment tank for easy flow guidance includes an upstream first treatment tank unit and a downstream second treatment tank unit, and a weir disposed between the two. A weir gate is disposed directly above the weir gate, and the weir gate includes a weir gate plate and weir gate teeth. The weir gate matches the weir gate and is slidably disposed on fixed plates on both sides of the weir gate via a slider-slider assembly. Adjustment components for adjusting the gap between the weir gate and the weir gate are provided on both sides of the weir gate. The adjustment components include:

[0007] The gear and rack assembly has one end fixedly connected to the slider of the slider and groove assembly, and the other end fixedly connected to the float.

[0008] An adjustment tank is provided, which contains the float and is connected to the second treatment tank unit via a connecting pipe.

[0009] A counterweight is connected to a connecting rod via a fixed pulley assembly. The connecting rod passes through a slot in the fixed plate and connects to the slider. The connecting rod can slide up and down along the slot.

[0010] Preferably, the gear and rack assembly is disposed inside the fixed plate, including a first rack and a second rack positioned opposite each other, both of which are slidably connected to the fixed plate. One end of the first rack is fixedly connected to the slider, and the first rack meshes with a first gear. The first gear is coaxially connected to a second gear, and the second gear meshes with a second rack. One end of the second rack is fixedly connected to a float.

[0011] Preferably, the pitch circle diameter of the first gear is at least twice the pitch circle diameter of the second gear.

[0012] Preferably, the fixed pulley assembly includes a fixed pulley and a connecting rope. There are two sets of fixed pulleys, both of which are connected to the support plate via a rotating shaft. One end of the connecting rope is connected to the connecting rod, and the other end is connected to the counterweight after the direction is changed by the fixed pulley.

[0013] Preferably, the counterweight is slidably disposed in the counterweight groove, and the total mass of the counterweight is equal to the mass of the weir gate.

[0014] The side wall of the regulating tank is provided with an observation window, and the observation window is provided with a first calibration scale and a water level scale indicating the water level in the regulating tank;

[0015] The float has a second calibration scale and is hollow to form a cavity. The upper end face of the float has an adjustment hole that connects to the cavity. Saturated brine is injected or extracted through the adjustment hole to change the overall density of the float.

[0016] Preferably, the water-facing surface of the weir gate tooth is an inclined surface, and the inclination angle of the inclined surface is 30 to 45 degrees.

[0017] Preferably, the connecting pipe is equipped with a valve.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] A weir gate and its corresponding regulating components are installed. The float in the regulating components moves up and down with the change of water level in the regulating tank. The gear and rack assembly drives the weir gate to move in the opposite direction, thereby changing the cross-sectional area of ​​the water flow at the weir opening and regulating the water flow rate into the second treatment tank unit until the water level in the second treatment tank is adjusted to the target water level.

[0020] Saturated brine is injected or extracted through the adjustment holes of the float, and the overall density of the float is changed according to the target water level, thereby flexibly adjusting the target stable water level value of the second treatment tank unit. Attached Figure Description

[0021] Figure 1 A schematic diagram of the overall structure of this utility model;

[0022] Figure 2This utility model Figure 1 Enlarged view of point A in the middle;

[0023] Figure 3 Schematic diagram of the post-adjustment assembly and weir gate of the planing section structure of this utility model;

[0024] Figure 4 This utility model Figure 3 Enlarged view at point B in the middle;

[0025] Figure 5 This utility model Figure 3 Enlarged view of section C (schematic diagram of the weir gate tooth structure).

[0026] In the diagram: 1. First treatment tank unit; 2. Second treatment tank unit; 3. Weir; 4. Weir gate; 41. Weir gate plate; 42. Weir gate teeth; 5. Fixing plate; 6. Adjustment assembly; 61. Sliding block; 62. First rack; 63. Second rack; 64. First gear; 65. Second gear; 66. Float; 67. Adjustment hole; 68. Adjustment groove; 69. Connecting pipe; 610. Counterweight; 611. Connecting rod; 612. Strip groove; 613. Fixed pulley; 614. Connecting rope; 615. Support plate; 616. First calibration scale; 617. Second calibration scale; 618. Water level scale. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] This utility model provides a technical solution:

[0029] See Figure 1 and Figure 5 A wastewater treatment tank for easy flow guidance includes an upstream first treatment tank unit 1 and a downstream second treatment tank unit 2, and a weir 3 disposed between the two. A weir gate 4 is disposed directly above the weir 3, matching the weir 3 and slidably disposed on fixed plates 5 on both sides of the weir 3 via a slider-slider assembly. The weir gate 4 includes a weir gate plate 41 and a weir gate tooth 42. Adjustment components 6 are provided on both sides of the weir 3 to adjust the gap between the weir gate 4 and the weir 3. The adjustment components 6 include:

[0030] See Figure 3 , Figure 4The gear and rack assembly has a slider 61 fixedly connected to the slider and groove assembly at one end and a float 66 fixedly connected to the other end. To reduce the friction between the slider 61 and the groove, ball bearings can be set on the slider 61 according to existing technology.

[0031] The regulating tank 68 contains the float 66 and is connected to the second treatment tank unit 2 via a connecting pipe 69, which is equipped with a valve.

[0032] The counterweight 610 is connected to the connecting rod 611 via the fixed pulley 613 assembly. The connecting rod 611 passes through the strip groove 612 opened on the fixed plate 5 and then connects to the slider 61. The connecting rod 611 can slide up and down along the strip groove 612.

[0033] The gear and rack assembly is disposed inside the fixed plate 5, including a first rack 62 and a second rack 63 that are positioned opposite each other and are slidably connected to the fixed plate 5. One end of the first rack 62 is fixedly connected to the slider 61, and the first rack 62 meshes with the first gear 64. The first gear 64 is coaxially connected to the second gear 65, and the second gear 65 meshes with the second rack 63. One end of the second rack 63 is fixedly connected to the float 66.

[0034] The pitch circle diameter of the first gear 64 is at least twice the pitch circle diameter of the second gear 65, amplifying the displacement of the float 66. Even a small change in water level can trigger the action of the weir gate 4.

[0035] The fixed pulley 613 assembly includes a fixed pulley 613 and a connecting rope 614. There are two sets of fixed pulleys 613, both connected to the support plate 615 via a rotating shaft. One end of the connecting rope 614 is fixedly connected to the connecting rod 611, and the other end is fixedly connected to the counterweight 610 after the fixed pulley 613 changes direction. The counterweight 610 is slidably set in the counterweight groove, and the mass of the counterweight 610 is equal to the mass of the weir gate 4. Both the surface of the counterweight 610 and the surface of the counterweight groove are coated with polytetrafluoroethylene. The counterweight system counteracts the self-weight of the weir gate 4, reduces motion resistance, and improves reliability. When the total mass of the counterweights 610 in the two sets of adjustment components 6 is equal to the mass of the weir gate 4, the buoyancy force on the float 66 when it is stable is equal to the sum of the self-weight of the float 66 and the friction force. The friction force includes the friction force of the gear and rack assembly, the friction force between the float 66 and the side wall, and the friction force of the slider and groove assembly. When selecting the float 66, the self-weight of the float 66 must be greater than the friction force of the transmission assembly.

[0036] See Figure 1 , Figure 2 The side wall of the regulating tank 68 is provided with an observation window. The observation window is strip-shaped and opened along the height direction of the regulating tank 68. A water level scale 618 indicating the water level and a first calibration scale 616 can be set on the observation window.

[0037] The float 66 is provided with a second calibration scale 617 and is hollow to form a cavity. The upper end face of the float 66 is provided with an adjustment hole 67 that connects to the cavity. The overall density of the float 66 can be changed by injecting or extracting saturated salt water through the adjustment hole 67. Of course, other common substances with a density greater than water, such as sand and metal particles, can also be added or removed into the cavity.

[0038] When the second calibration scale 617 and the first calibration scale 616 are aligned, the gap between the weir gate 4 and the weir opening 3 is the intermediate value of the adjustable size.

[0039] See Figure 5 In addition to the horizontal inclined side, the two sets of inclined sides on the gate teeth 42 of the gate 4 extend in the opposite direction of the water flow to form inclined surfaces, and the included angle between the two sets of inclined surfaces is 30 to 45 degrees. The inclined surfaces decompose the force on the gate 4 into a component force parallel to the inclined surface and a component force perpendicular to the inclined surface, thereby reducing the direct impact of the water flow on the gate 4 and improving the stability of the gate 4 during operation.

[0040] Alternatively, a limiting block can be set in the adjusting groove 68 or in the sliding groove of the first rack 62 or the second rack 63 according to existing technology, thereby limiting the movement range of the weir gate 4.

[0041] When using this utility model, the water level (i.e., the target water level) in the second treatment tank unit 2 is determined according to the process requirements. Then, the valve on the connecting pipe 69 is closed, and water is added to the regulating tank 68 until the target water level is reached. The same mass of saturated brine is injected or extracted in batches into the cavities of the floats 66 at both ends of the weir 3 through the regulating hole 67. After the floats 66 are stabilized, the second calibration scale 617 is aligned with the first calibration scale 616. Finally, the valve on the connecting pipe 69 is opened to connect the regulating tank 68 with the second wastewater treatment tank, and the water level in the second treatment tank unit 2 is adjusted according to the target water level.

[0042] The adjustment process is as follows: When the water level in the second treatment tank unit 2 is higher than the target water level, the float 66 rises and drives the weir gate 4 to move downward through the gear and rack assembly, reducing the cross-sectional area of ​​the water flow, so that the outflow rate in the second treatment tank unit 2 is greater than the inflow rate, thereby lowering the water level in the second treatment tank unit 2; when the water level in the second treatment tank unit 2 is lower than the target water level, the float 66 overcomes friction and descends under the action of gravity, thereby driving the weir gate 4 to rise through the gear and rack assembly, increasing the cross-sectional area of ​​the water flow, so that the outflow rate in the second treatment tank unit 2 is less than the inflow rate;

[0043] By continuously floating up and down the float 66, the cross-sectional area of ​​the water flow is changed, thereby adjusting the water level in the second treatment tank unit 2 to stabilize it at the target water level.

[0044] 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 alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A wastewater treatment pond for easy flow guidance, comprising an upstream first treatment pond unit (1) and a downstream second treatment pond unit (2), and a weir (3) disposed between the two, characterized in that: A gate (4) is provided directly above the weir opening (3). The gate (4) includes a gate plate (41) and gate teeth (42). The gate (4) matches the weir opening (3) and is slidably mounted on the fixed plates (5) on both sides of the weir opening (3) via a slider and groove assembly. Adjustment components (6) for adjusting the gap between the gate (4) and the weir opening (3) are provided on both sides of the weir opening (3). The adjustment components (6) include: The gear rack assembly has one end fixedly connected to the slider (61) of the slider groove assembly, and the other end fixedly connected to the float (66); An adjustment trough (68) is provided, which contains the float (66) and is connected to the second treatment pool unit (2) via a connecting pipe (69). The counterweight (610) is connected to the connecting rod (611) via a fixed pulley (613) assembly. The connecting rod (611) passes through the strip groove (612) opened on the fixed plate (5) and is connected to the slider (61). The connecting rod (611) can slide up and down along the strip groove (612).

2. The wastewater treatment tank for easy flow guidance according to claim 1, characterized in that: The gear and rack assembly is disposed inside the fixed plate (5) and includes a first rack (62) and a second rack (63) positioned opposite each other, both of which are slidably connected to the fixed plate (5). One end of the first rack (62) is fixedly connected to the slider (61), and the first rack (62) meshes with the first gear (64). The first gear (64) is coaxially connected to the second gear (65), and the second gear (65) meshes with the second rack (63). One end of the second rack (63) is fixedly connected to the float (66).

3. The wastewater treatment tank for easy flow guidance according to claim 2, characterized in that: The pitch circle diameter of the first gear (64) is at least twice the pitch circle diameter of the second gear (65).

4. The wastewater treatment tank for easy flow guidance according to claim 1, characterized in that: The fixed pulley (613) assembly includes a fixed pulley (613) and a connecting rope (614). There are two sets of fixed pulleys (613), both of which are connected to the support plate (615) through a rotating shaft. One end of the connecting rope (614) is connected to the connecting rod (611), and the other end is connected to the counterweight (610) after changing direction through the fixed pulley (613).

5. A wastewater treatment tank for easy flow guidance according to claim 4, characterized in that: The counterweight (610) is slidably disposed in the counterweight groove, and the total mass of the counterweight (610) is equal to the mass of the weir gate (4).

6. The wastewater treatment tank for easy flow guidance according to claim 1, characterized in that: The side wall of the regulating tank (68) is provided with an observation window, and the observation window is provided with a first calibration scale (616) and a water level scale (618) indicating the water level in the regulating tank (68); The float (66) is provided with a second calibration scale (617) and the float (66) is hollow to form a cavity. The upper end face of the float (66) is provided with an adjustment hole (67) that connects to the cavity. Saturated salt water is injected or extracted through the adjustment hole (67) to change the overall density of the float (66).

7. A wastewater treatment tank for easy flow guidance according to claim 1, characterized in that: The water-facing surface of the weir gate tooth (42) is an inclined surface with an inclination angle of 30 to 45 degrees.

8. A wastewater treatment tank for easy flow guidance according to claim 1, characterized in that: A valve is provided on the connecting pipe (69).

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