CN116078003B - Supernatant liquid water outlet structure and overflow water outlet device - Google Patents
Supernatant liquid water outlet structure and overflow water outlet device Download PDFInfo
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- CN116078003B CN116078003B CN202211697766.0A CN202211697766A CN116078003B CN 116078003 B CN116078003 B CN 116078003B CN 202211697766 A CN202211697766 A CN 202211697766A CN 116078003 B CN116078003 B CN 116078003B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/24—Feed or discharge mechanisms for settling tanks
- B01D21/2444—Discharge mechanisms for the classified liquid
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Abstract
The application discloses a supernatant liquid water outlet structure which comprises a drain pipe, a water collecting branch pipe and a weir body. Wherein, the drain pipe is arranged in the tank body in a non-vertical way and is communicated with a clear water channel outside the tank body. The water collecting branch pipe is communicated with the drain pipe; the weir body and the water receiving branch pipe form a moving pair, and the direction of the moving pair is the direction of connecting the first end and the second end of the water receiving branch pipe; the driving force of the weir body moving along the water receiving branch pipe is derived from the buoyancy and self gravity of the weir body obtained from the supernatant liquid; the overflow height of the weir body can be changed along with the liquid level height of the supernatant liquid, thereby realizing automatic adjustment.
Description
Technical Field
The application relates to the technical field of wastewater or sewage purification treatment equipment, in particular to a supernatant liquid water outlet structure and an overflow water outlet device.
Background
A sedimentation tank is often used in sewage treatment equipment, sewage enters the sedimentation tank, solid-liquid separation is realized after diversion and diversion, and the solid (such as sludge) with higher density is collected at the bottom of the sedimentation tank or in a sludge hopper after sedimentation, and clarified liquid with lower density is discharged out of the sedimentation tank through an overflow tank.
In order to ensure that clear liquid can smoothly discharge sewage treatment equipment, a weir plate with adjustable height is arranged on an overflow groove, a triangular weir is arranged on the weir plate, and the height of the weir plate on the overflow groove is adjusted by manpower to control the uniformity of water yield. The manual adjustment needs to monitor the relative height change of the water level and the weir plate in real time, and the labor intensity is high. For the buried water treatment facilities, because the overhaul space is relatively closed, the adjustment operation of the weir plate by manpower is inconvenient, or the manual adjustment is difficult to realize.
In order to achieve automatic adjustment of the height of the weir plate, patent document publication No. JP2558086Y2 discloses a supernatant water discharge device with good followability, in which a water collection tank floats in a liquid by buoyancy, the draft of which is adjusted by the amount of air in an air tank. Patent document publication No. JP2001079582a discloses a structure in which floats on both sides drive a movable weir in the middle to rise and fall.
The automatic adjustment of the height of the water inlet channel in the prior art and engineering practice is linked with other buoyancy structures, the structure is complex, and the adjustment structure for adjusting the height of the weir plates is large in size and is unfavorable for being built on a sedimentation tank.
Disclosure of Invention
Aiming at the problems of the supernatant water outlet structure with the automatic adjustment of the weir plate in the prior art, the application provides a supernatant water outlet structure and an overflow water outlet device.
The application aims at realizing the following technical scheme, and provides a supernatant water outlet structure, which comprises the following components:
the drain pipe is arranged in the tank body in a non-vertical mode and is communicated with a clear water channel outside the tank body;
the first end pipe orifice is upward, and the second end pipe orifice is downward communicated with the drain pipe;
the weir body and the water receiving branch pipe form a moving pair, and the direction of the moving pair is the connecting line direction of the first end and the second end of the water receiving branch pipe; the power of the weir moving along the water receiving branch pipe is derived from the buoyancy and self gravity of the weir obtained from the supernatant fluid;
and determining the pipe diameter of the drain pipe according to the maximum water inflow of the tank body under the condition that the liquid in the drain pipe is not full.
According to the technical scheme, the gravity and the buoyancy of the weir are used for determining the length of the contact surface of the weir and the water receiving branch pipe (the length of the contact surface of the weir and the water receiving branch pipe is the length which is coincident with the first end to the second end of the water receiving branch pipe). When the liquid level of the supernatant in the tank body rises, the weir body rises under the action of buoyancy; when the liquid level of the supernatant in the tank body is lowered, the weir body is lowered under the action of gravity, so that the height of the upper edge of the weir body relative to the water collecting branch pipe is changed along with the change of the liquid level of the supernatant.
Through the description, in order to ensure that the weir body can adapt to the change of the liquid level of the supernatant fluid, and a moving pair relationship is kept between the weir body and the water collecting branch pipe, the height of the water discharging pipe in the tank body, the length of the water collecting branch pipe and the height of the weir body are calculated according to the water inflow rate in the tank body and the height requirement of the liquid level in the tank body when the tank body is in a working state, so that the supernatant fluid outlet structure can timely discharge the supernatant fluid.
The pipe diameter and the number of the drain pipes are calculated according to the internal water inflow of the tank body and the height requirement of the liquid level in the tank body when the tank body is in a working state, and the purpose of designing the parameters is to timely discharge the supernatant.
The cross sections of the drain pipe, the water collecting branch pipe and the weir body can be round, rectangular or other polygons. The cross sections of the drain pipe, the water collecting branch pipe and the weir body can also be variable, for example, the cross section gradually becomes larger according to the flowing direction of the supernatant liquid.
Wherein the water draining pipe, the water collecting branch pipe and the weir body can be straight pipes, bent pipes or folded pipes.
The second end pipe orifice of the water collecting branch pipe can be connected to the upper pipe wall of the drain pipe. The second end pipe orifice of the water receiving branch pipe can also be connected with the side pipe wall of the drain pipe.
The movable pair between the weir and the water collecting branch pipe can be realized through sliding fit between the inner wall of the weir and the outer wall of the water collecting branch pipe, or through arranging a sliding block on one of the inner wall of the weir and the outer wall of the water collecting branch pipe, wherein the sliding block is arranged on one of the sliding grooves.
In a preferred embodiment, the upper edge of the weir body is provided with a weir, and the shape of the weir can be rectangular, trapezoidal or circular arc.
In a preferred embodiment, the weir is provided with a through-hole, which may be rectangular, circular, elliptical, or the like.
In a preferred embodiment, the weir is sleeved on the outer wall of the water receiving branch pipe.
In a preferred embodiment, the supernatant effluent structure further comprises:
and the limiting structure is used for preventing the weir body from separating from the water collecting branch pipe.
In a preferred embodiment, the limiting structure is arranged behind the upper edge of the water receiving branch pipe, and the upper end of the limiting structure is partially positioned right above the pipe wall of the weir; the height of the limiting space at the upper end of the limiting structure is smaller than the height of the water collecting branch pipe. The height of the limiting space at the upper end of the limiting structure refers to the height of the upper end of the limiting structure for limiting the movable range of the weir body. For the situation that the height of the weir body is larger than or equal to the height of the water receiving branch pipe, the height of a limiting space at the upper end of the limiting structure is the height of the water receiving branch pipe; for the condition that the height of the weir is smaller than the height of the water receiving branch pipe, the height of a limiting space at the upper end of the limiting structure is the height of the weir. When the supernatant liquid water outlet structure is installed, the weir body is sleeved on the outer wall of the water collecting branch pipe, and then the limiting structure is fixed above the water collecting branch pipe and can be fixed in a bonding or bolting mode.
In a preferred embodiment, the limiting structure is a structural member with gravity greater than the buoyancy of the whole weir body; the upper end of the limiting structure is partially positioned right above the pipe wall of the weir body after the limiting structure is placed on the upper edge of the water receiving branch pipe; the height of the limiting space at the upper end of the limiting structure is smaller than the height of the water collecting branch pipe. In this embodiment, because the limiting structure is a structural member with a weight greater than the buoyancy of the whole weir body, the effect of limiting the weir body from separating from the water receiving branch pipe can be achieved by placing the limiting structure on the upper edge of the water receiving branch pipe.
In the embodiment in which the weir is sleeved on the outer wall of the water receiving branch pipe, for another embodiment of the limiting structure: the limiting structure is connected with the water collecting branch pipe, and the upper end of the limiting structure is provided with a part which is positioned right above the pipe wall of the weir body; the height of the limiting space at the upper end of the limiting structure is smaller than the height of the water collecting branch pipe. And limit structure is elastic structure, and when installing supernatant liquid goes out the water structure, retrains limit structure to central elastic deformation, will the weir body cover behind the drainage branch pipe, relax limit structure, at this moment limit structure's upper end has a part to be located directly over the pipe wall of weir body.
In a preferred embodiment, a gap is provided between the water receiving branch pipe and the weir, the gap being sized to accommodate sliding movement between the weir and the water receiving branch pipe and to allow the supernatant fluid to flow into the gap.
In a preferred embodiment, the average density of the weirs, i.e., the total mass of the weirs divided by the total volume, is less than or equal to the density of the supernatant.
In a preferred embodiment, the weirs are non-uniform density structural members; the density of the upper end of the weir is less than the density of the lower end. The weir may be formed by combining two materials of different densities, wherein the density of the upper material of the weir is less than the density of the supernatant, the density of the lower material of the weir is greater than the density of the supernatant, and the average density of the combined weir is less than or equal to the density of the supernatant. The weir may also be made of a material having a gradient of density, the upper material of the weir having a density less than the density of the supernatant, the lower material of the weir having a density greater than the density of the supernatant, and the average density of the weir being less than or equal to the density of the supernatant.
In a preferred embodiment, the weir comprises an inner layer and an outer layer;
the bottom surface of the outer layer of the weir is higher than the bottom surface of the inner layer, and the top surface of the outer layer of the weir is not limited to be flush with the top surface of the inner layer of the weir;
the material of the outer layer of the weir is smaller than the density of the supernatant, and the material of the inner layer of the weir is larger than or equal to the density of the supernatant.
The application also provides an overflow water outlet device, which provides a tank body for precipitation separation of components with different densities in a solid-liquid mixture, and the liquid with low density in the mixture is clarified to an upper layer to form supernatant, and the supernatant water outlet structure is arranged in the tank body.
The supernatant liquid outlet structure disclosed by the application comprises a drain pipe, a water collecting branch pipe and a weir body. The drainage pipe is arranged in the tank body in a non-vertical mode and is communicated with a clear water channel outside the tank body, a channel of the tank body is reserved for supernatant fluid in the tank body, and the non-vertical state enables a plurality of water collecting branch pipes distributed at different positions of the tank body to be communicated through the drainage pipe under the condition that the structure is simplest or the raw material is least, so that the supernatant fluid at different positions is collected and enters the drainage pipe. The water collecting branch pipe is characterized in that a pipe orifice at a first end is upward, and a pipe orifice at a second end is communicated with the drain pipe; the weir body and the water receiving branch pipe form a moving pair, and the direction of the moving pair is the direction from the first end to the second end of the water receiving branch pipe; the driving force of the weir body moving along the water receiving branch pipe is derived from the buoyancy and self gravity of the weir body obtained from the supernatant liquid; the overflow height of the weir body can be changed along with the liquid level height of the supernatant liquid, thereby realizing automatic adjustment. And determining the pipe diameter of the drain pipe according to the maximum water inflow rate of the tank body under the condition that the liquid in the drain pipe is not full of the pipe flow, so that the supernatant in the drain pipe is ensured to smoothly leave the tank body.
Obviously, the supernatant liquid water outlet structure provided by the application is quite different from the overflow groove adopted by the supernatant liquid water outlet structure of the sedimentation tank or the clarification tank in the prior art, adopts a weir body which is movably matched with a tubular water collecting branch pipe as a structure for collecting the supernatant liquid, introduces the supernatant liquid into a pipeline type water discharge pipeline and then discharges the supernatant liquid out of the sedimentation tank or the clarification tank, and ensures that the water outlet flow of each part is uniform without manual adjustment along with the rising or falling of the liquid level of the supernatant liquid. The method is particularly suitable for underground sewage treatment facilities, and is inconvenient in adjustment operation of the weir plate because the overhaul space is relatively closed.
The height of the weir body, namely the height of the upper edge of the weir body exceeding the upper edge of the water receiving branch pipe, is determined by the stress of the weir body, and is different from the solution of adopting linkage with other buoyancy structures for realizing automatic adjustment of the height of the weir plate in the prior art. When the water is discharged from the supernatant liquid of the sedimentation tank, the weir body is positioned in the supernatant liquid, and when the liquid level of the supernatant liquid fluctuates, the weir body can float up and down along with the liquid level so as to ensure that the supernatant liquid can still be uniformly discharged from each water receiving branch pipe. And moreover, the water collecting branch pipe has guiding and limiting functions on the weir body, and the uniformity of supernatant liquid discharge is further ensured.
The supernatant water outlet structure provided by the application is simple in structure, does not need a side linkage structure, and is particularly beneficial to being built on an overflow water outlet device. The application further provides an overflow water outlet device, overflow water is discharged from the supernatant water outlet structure, the overflow water outlet device has the advantages of the supernatant water outlet structure, and the function of automatically adjusting the height of the supernatant water outlet weir plate is realized. Therefore, the overflow water outlet device is also particularly suitable for the condition that the overhaul space is relatively closed, and the operation space for adjusting the weir plate is small or cannot be adjusted manually.
Drawings
Fig. 1 is a schematic structural diagram of a supernatant effluent structure provided in embodiment 1 of the present application;
fig. 2 is a schematic diagram of a supernatant effluent structure according to another view angle of the embodiment 1;
FIG. 3 is a schematic structural view of a weir of the supernatant outlet structure according to example 1 of the present application;
FIG. 4 is a schematic view of a part of another embodiment of the supernatant effluent structure according to example 1 of the present application;
fig. 5 is a schematic structural diagram of an overflow water outlet device according to embodiment 2 of the present application.
The graphic reference numerals: 1-drain pipe, 2-weir, 201-outer layer of weir, 202-inner layer of weir, 3-water collecting branch pipe, 4-flange, 5-water outlet, 6-weir, 7-through hole, 8-limit structure, 801-upper bar group, 802-connecting bar group, 803-lower bar group, 100-supernatant water outlet structure, 200-overflow water outlet device and 300-clear water channel.
Detailed Description
The application will be described in detail below with reference to the drawings in connection with embodiments. The principles and features of the present application are described below with reference to the drawings, and it should be noted that embodiments of the present application and features of the embodiments may be combined with each other without conflict. The examples are given solely for the purpose of illustration and are not intended to limit the scope of the application.
Example 1
The present embodiment provides a supernatant water outlet structure, referring to fig. 1 and 2, comprising:
the drain pipe 1 is horizontally arranged in the tank body and is communicated with a clear water channel outside the tank body;
the water collecting branch pipe 3 is provided with a first end pipe orifice upwards and a second end pipe orifice downwards communicated with the drain pipe 1;
the water collecting branch pipe 3 is provided with a water collecting branch pipe 3, a water inlet pipe and a water outlet pipe, wherein the water inlet pipe is connected with the water collecting branch pipe 3 through a water inlet pipe, and the water inlet pipe is connected with the water outlet pipe through a water inlet pipe; the power of the weir body 2 moving along the water receiving branch pipe 3 is derived from the buoyancy obtained by the weir body 2 from the supernatant fluid and the gravity thereof;
a plurality of water receiving branch pipes 3 and weir bodies 2 can be arranged on the water drain pipe 1, and 9 pairs of water receiving branch pipes and weir bodies are arranged in the embodiment. And determining the pipe diameter of the drain pipe 1 according to the maximum water inflow of the tank body under the condition that the liquid in the drain pipe 1 is not full.
The present embodiment uses the gravity of the weir 2 and the buoyancy thereof in the supernatant as the height determining the upper edge of the weir 2 relative to the receiving branch 3. When the liquid level of the supernatant in the tank body rises, the weir body 2 rises; when the liquid level of the supernatant in the tank body is lowered, the weir body 2 is lowered, and the height of the upper edge of the weir body 2 relative to the pipe orifice at the upper end of the water collecting branch pipe 3 is changed along with the change of the liquid level of the supernatant.
The pipe diameter and the number of the drain pipes are calculated according to the inner water inflow of the tank body and the height requirement of the inner liquid level of the tank body when the tank body is in a working state, and the purpose of designing the parameters is to timely discharge the supernatant.
In this embodiment, the drain pipe 1, the water collecting branch pipe 3 and the weir body 2 are circular pipes, the cross section of each pipe is unchanged in size, the circular cross section can reduce the flow resistance of the supernatant as much as possible, and the structure with unchanged cross section is adopted for convenience in manufacturing. Wherein, the diameter of the inner wall of the drain pipe 1 is larger than that of the inner wall of the water collecting branch pipe 3, so that the supernatant liquid can overflow smoothly.
In this embodiment, the drain pipe 1, the water collecting branch pipe 3 and the weir body 2 are straight pipes, so that the flow resistance of the supernatant fluid is reduced.
In this embodiment, the second end pipe orifice of the water collecting branch pipe 3 is connected to the upper pipe wall of the drain pipe 1, and for the drain pipe 1 in a non-full pipe flow state, the water collecting branch pipe 3 is arranged on the upper pipe wall of the drain pipe 1 to benefit the flow direction of the supernatant liquid from the water collecting branch pipe 3 to the drain pipe 1.
In this embodiment, the weir 2 and the water collecting branch pipe 3 form a moving pair, and the weir 2 is disposed on the outer wall of the water collecting branch pipe 3. The weir 2 provided on the outer side of the water collecting branch pipe 3 is capable of sensing the change of the liquid level of the supernatant fluid when the liquid level is lower and participating in adjusting the water outlet height of the supernatant fluid when the liquid level is lower.
In this embodiment, the sliding pair between the weir 2 and the water receiving branch pipe 3 may be realized by sliding fit between the inner wall of the weir 2 and the outer wall of the water receiving branch pipe 3, or by arranging a sliding block on one of the inner wall of the weir 2 and the outer wall of the water receiving branch pipe 3.
Regarding the arrangement of the drain pipes, this example shows an embodiment in which the drain pipe 1 is disposed inclined to the horizontal plane, and the lower end of the drain pipe 1 communicates with a clear water channel outside the tank body, so that the supernatant liquid in the drain pipe 1 flows out of the tank body and out of the drain pipe 1 faster by gravity. The supernatant fluid flows out of the drain pipe 1 more quickly, and the condition of non-full pipe flow in the drain pipe 1 is more easily satisfied.
Regarding the arrangement mode of the water receiving branch pipes, this embodiment provides a preferred embodiment, the water receiving branch pipes 3 are vertically arranged, which is favorable for being less influenced by water surface fluctuation, and the direction of the moving pair between the vertically arranged water receiving branch pipes 3 and the weir body 2 is vertical, so that the friction force between the vertically arranged water receiving branch pipes 3 and the weir body 2 is smaller, and the weir body 2 can be ensured to move more smoothly on the water receiving branch pipes 3.
In the structural form of the weir, this embodiment provides a preferred embodiment, referring to fig. 3, and in combination with fig. 1, the upper edge of the weir 2 is provided with a rectangular weir 6, the weir 6 is a channel for the supernatant fluid to flow through the weir 2, and by providing the weir 6, a part of the weir 2 provided with the weir 6 is below the liquid surface of the supernatant fluid, so that the stability of the weir 2 in the supernatant fluid can be improved. The weir crest 6 is arranged on the weir body 2 in a central symmetry way, so that the gravity center of the weir body 2 is ensured to be positioned at the center of the weir body.
In this embodiment above, a preferred embodiment of the size of the slice 6: the distance between the bottom of the weir 6 and the bottom of the weir 2 is equal to the height of the water receiving branch pipe 3 protruding out of the water discharging pipe 1. In this embodiment, when the liquid level in the tank is low, the weir 2 falls on the drain pipe 1, and the overflow height of the supernatant liquid is the height of the water collecting branch pipe 3. The overflow height of the weir body 2 to the supernatant reaches the maximum range, and the structural efficiency is highest.
The present example also provides several embodiments of the weir 2, one of which: the pipe wall of the part of the weir body 2 provided with the weir crest 6 and the weir body 2 at the lower half part are of a split structure, the pipe wall of the part provided with the weir crest 6 is movably connected with the lower half part of the weir body 2, and the height of the pipe wall of the part provided with the weir crest 6 extending out of the lower half part of the weir body 2 is adjustable; and two,: the pipe wall of the part of the weir body 2 provided with the weir crest 6 is provided with an inner layer and an outer layer, and the pipe wall of the outer layer and the lower half part of the weir body 2 can be integrated, and the size of the weir crest 6 can be changed by rotating the pipe wall of the inner layer.
In a preferred embodiment, the weir 2 is provided with a circular through hole 7, and the through hole 7 can increase the flow rate of the supernatant liquid to the water collecting branch pipe 3 when the liquid level in the tank body is high.
In operation, excessive water quantity in the tank body is inevitably encountered, and when the liquid level is too high, the weir body 2 can be separated from the water receiving branch pipe 3, so that the supernatant water outlet structure provided by the embodiment is invalid. The application provides an implementation mode of a limiting structure, which comprises the following steps: referring to fig. 4, the limit structure 8 is connected to the upper edge of the water receiving branch pipe 3 without floating or swaying with the water flow; the limit structure 8 is placed behind the upper edge of the water receiving branch pipe 3, and part of the upper end of the limit structure 8 is positioned right above the pipe wall of the weir body 2, and the limit space height of the upper end of the limit structure 8 is smaller than the height of the water receiving branch pipe 3. When the weir body 2 rises along with the liquid level of the supernatant liquid, the upper end of the limiting structure 8 prevents the weir body 2 from continuously floating upwards before the weir body 2 is separated from the water collecting branch pipe 3. In another embodiment of the limiting structure, the limiting structure 8 is a structural member with gravity greater than the maximum buoyancy force borne by the weir body 2, so that the structural member can be stably seated on the upper edge of the water receiving branch pipe 3 without floating or swaying along with water flow.
In this embodiment, the limiting structure 8 includes an upper rod group 801, a lower rod group 803, and a connecting rod group 802 connecting the upper and lower rod groups, the lower rod group 803 is disposed on an upper edge of the water receiving branch pipe 3, an upper rod group 801 is disposed at an upper end of the limiting structure 8, a rod end of the upper rod group 801 is located right above a pipe wall of the weir 2, and a vertical distance from a bottom surface of the lower rod group 803 to a bottom surface of the upper rod group 801 is equal to or smaller than a height of the weir 2.
In this embodiment, there is the gap between receipts water branch pipe 3 and the weir body 2, the size of gap satisfies the slip between weir body 2 and the receipts water branch pipe 3 and allows the supernatant fluid flows in the gap, the gap provides still another overflow channel for the supernatant fluid to the supernatant fluid is as the lubricant makes the motion of weir body 2 along receipts water branch pipe 3 more smooth, avoids the card to stop.
Further, a structure for adjusting the size of a gap between the outer wall of the water collecting branch pipe 3 and the inner wall of the weir body 2, such as a sealing ring, a rubber ring, a gasket, etc., is provided between the two.
In order to be able to ensure that the weir can rise and fall as the level of the supernatant varies, the average density of the weir 2 is less than or equal to the density of the supernatant.
In one embodiment, the weirs 2 are non-uniform density structural members; the density of the upper end of the weir 2 is less than the density of the lower end. The density of the upper end is small, so that the weir body 2 floats when the liquid level of the supernatant liquid rises to exceed the height of the water collecting branch pipe 3 and the buoyancy is needed to rise, and the density of the lower end is large, so that the falling process is smooth when the weir body 2 does not need to float.
In a preferred embodiment, with continued reference to fig. 4, the weir 2 comprises an inner layer and an outer layer, the bottom surface of the outer layer 201 of the weir being higher than the bottom surface of the inner layer 202 of the weir. The material of the outer layer 201 of the weir is smaller than the density of the supernatant fluid, and the material of the inner layer 202 of the weir is larger than or equal to the density of the supernatant fluid. The outer layer of the low-density material is equivalent to the floating ring of the weir body 2, so that the floating stability of the weir body 2 is improved, and enough buoyancy is ensured.
In order to accommodate a wider range of variations in the level of the supernatant liquid, the present example presents a preferred embodiment in which part of the pipe section of the water receiving branch 3 is provided in the form of a bellows of variable length, the driving force of the variation in length of the bellows section being dependent on the buoyancy.
Example 2
Referring to fig. 5, the embodiment provides an overflow water outlet device 200, which provides a tank body for settling and separating components with different densities in a solid-liquid mixture, wherein a liquid with a low density in the mixture is clarified to an upper layer to form a supernatant, the supernatant water outlet structure 100 described in embodiment 1 is disposed in the tank body, and the supernatant in the overflow water outlet device 200 is discharged to the clear water channel 300 through the supernatant water outlet structure 100.
Referring to fig. 1 and 5, in one embodiment, both ends of a horizontally arranged drain pipe 1 are fixedly connected to an end plate of an overflow water outlet device 200 by flanges 4, supernatant obtained after precipitation separation flows into the drain pipe 1 from a weir 6, a through hole 7 and a gap between the weir 2 and a water receiving branch pipe 3 in the overflow water outlet device 200, and flows out to a clear water channel 300 from a water outlet 5 connected to the drain pipe 1.
The two ends of the drain pipe 1 are provided with flanges 4 and are connected with end plates at two opposite ends of the overflow water outlet device 200 through bolts, so that the position of the drain pipe 1 is ensured to be stable.
In one embodiment the drain pipe 1 has a certain inclination angle to the horizontal.
In the description of the present application, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application.
In the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present application, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
While embodiments of the present application have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the application, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the application.
Claims (8)
1. Supernatant effluent structure, characterized by comprising:
the drain pipe is arranged in the tank body in a non-vertical mode and is communicated with a clear water channel outside the tank body;
the first end pipe orifice is upward, and the second end pipe orifice is downward communicated with the drain pipe;
the weir body and the water receiving branch pipe form a moving pair, and the direction of the moving pair is the connecting line direction of the first end and the second end of the water receiving branch pipe; the power of the weir moving along the water receiving branch pipe is derived from the buoyancy and self gravity of the weir obtained from the supernatant fluid; the weir body is sleeved on the outer wall of the water collecting branch pipe; a gap is formed between the water collecting branch pipe and the weir, and the size of the gap meets the sliding between the weir and the water collecting branch pipe and allows the supernatant to flow into the gap; the number of the weir bodies corresponds to the number of the water collecting branch pipes, and the weir bodies are sleeved on each water collecting branch pipe;
and determining the pipe diameter of the drain pipe according to the maximum water inflow of the tank body under the condition that the liquid in the drain pipe is not full.
2. The supernatant water outlet structure of claim 1, wherein the weir is provided with a weir, and/or the weir is provided with a through hole.
3. The supernatant water outlet structure of claim 1, further comprising:
and the limiting structure is used for preventing the weir body from separating from the water collecting branch pipe.
4. The supernatant water outlet structure of claim 3, wherein,
the upper end of the limiting structure is partially positioned right above the pipe wall of the weir body after the limiting structure is arranged above the water collecting branch pipe; the height of the limiting space at the upper end of the limiting structure is smaller than the height of the water collecting branch pipe.
5. The supernatant drainage structure of any one of claims 1-4, wherein the average density of the weirs is less than or equal to the density of the supernatant.
6. The supernatant effluent structure of claim 5, wherein the weirs are non-isopycnic structures; the density of the upper end of the weir is less than the density of the lower end.
7. The supernatant water outlet structure of claim 5, wherein the weir comprises an inner layer and an outer layer;
the bottom surface of the outer layer of the weir body is higher than the bottom surface of the inner layer;
the material of the outer layer of the weir is smaller than the density of the supernatant, and the material of the inner layer of the weir is larger than or equal to the density of the supernatant.
8. An overflow water outlet device for providing a tank body for precipitation separation of components with different densities in a solid-liquid mixture, and clarifying low-density liquid in the mixture to an upper layer to form supernatant, wherein the supernatant water outlet structure according to any one of claims 1-7 is arranged in the tank body.
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| CN115944953B (en) * | 2022-12-28 | 2023-09-19 | 广东清研环境科技有限公司 | Multifunctional circulation clarifier and sewage treatment system |
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