Wave-shaped weir plate device of effluent weir tank

Abstract

The utility model provides a wavy weir plate device of an effluent weir tank. The wavy weir plate device comprises a secondary sedimentation tank, the water outlet weir tanks are arranged below the secondary sedimentation tank in an inclined manner, the surfaces of the water outlet weir tanks are of a plurality of wavy sealing plate structures which are arranged in an array manner, and a water passing tank is arranged below the water outlet weir tanks; the water passing channel is arranged at one end, far away from the effluent weir tank, of the water passing tank; the sedimentation tank is arranged below the water passing channel, and water in the secondary sedimentation tank body can flow into the water passing channel along the surface of the water passing channel after flowing out of the effluent weir groove and falls into the sedimentation tank. Firstly, the secondary sedimentation tank is divided into a plurality of effluent weir grooves, the torrential phenomenon during effluent can be prevented, secondly, the effluent weir grooves are obliquely arranged, the falling flow speed can be reduced, the joints of the effluent weir grooves, the secondary sedimentation tank and a water passing groove can be in smooth transition through a wavy sealing plate structure, shock waves and splashed water are prevented from being generated, and the service life of the secondary sedimentation tank is prolonged. And the dissolved oxygen content is increased.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of water outlet weir groove wave-shaped weir plate devices, applied to sewage treatment field. BACKGROUND

[0002] When the effluent of secondary sedimentation tank enters the process section needing denitrification treatment, the control of dissolved oxygen (DO) level becomes particularly important. This is because if the dissolved oxygen content is too high, it affects the creation of anoxic environment in the denitrification process, leading to unnecessary consumption of carbon source, and thus increasing the input of additional carbon source, causing resource waste. The existing effluent weir groove structure is prone to rapid drop when discharging water, generating shock waves and splashing water, or the water flow of secondary sedimentation tank or high-efficiency sedimentation tank is reduced, causing the dissolved oxygen content to increase. Therefore, the utility model improves the technology and designs a kind of water outlet weir groove wave-shaped weir plate device. SUMMARY

[0003] The utility model provides a kind of water outlet weir groove wave-shaped weir plate device, which can effectively solve the above problems.

[0004] The utility model is realized as follows:

[0005] A kind of water outlet weir groove wave-shaped weir plate device, comprising:

[0006] Secondary sedimentation tank; and

[0007] A plurality of inclined water outlet weir grooves arranged below the secondary sedimentation tank, the surface of the water outlet weir groove is arranged as a plurality of arrayed wave-shaped sealing plate structures, and a water passage is arranged below the water outlet weir groove.

[0008] A water passage is arranged at the end of the water passage away from the water outlet weir groove.

[0009] A sedimentation tank is arranged below the water passage, and after the water in the secondary sedimentation tank flows out from the water outlet weir groove, it can flow along the surface of the water passage into the water passage and fall into the sedimentation tank.

[0010] As a further improvement, the connecting end of the sealing plate structure and the secondary sedimentation tank is arranged to be tangent to the horizontal direction of the secondary sedimentation tank, and the connecting end of the sealing plate structure and the water passage is arranged to be tangent to the horizontal direction of the water passage.

[0011] As a further improvement, the inclination angle α of the water outlet weir groove is 35-42°.

[0012] As a further improvement, the number of water outlet weir grooves is 4-6, and the array number of sealing plate structures is 2-4.

[0013] As a further improvement, the water passage comprises an upper passage and a lower passage connected with the upper passage, the side wall section of the upper passage is in an arc shape structure, the side wall section of the lower passage is in a straight wall structure, and the inlet size of the upper passage is larger than that of the lower passage.

[0014] As a further improvement, the connection between the upper passage and the water passage is provided with an annular chamfer structure.

[0015] As a further improvement, the diameter of the upper passage top section is defined as R1, and the diameter of the lower passage is defined as r1, and R1:r1=4-5:3.

[0016] As a further improvement, the height of the upper passage is defined as H1, and the height of the lower passage is defined as h1, and H1:h1=7-9:2.

[0017] The beneficial effects of the utility model are: a plurality of inclined water outlet weir grooves are arranged below the secondary sedimentation tank, the surface of the water outlet weir groove is provided with a plurality of arrayed wave-shaped sealing plate structures, the secondary sedimentation tank is divided into a plurality of water outlet weir grooves, water flow can be reduced, and the phenomenon of turbulent water flow can be prevented, the water outlet weir groove is inclined, the falling flow rate can be reduced, the water outlet weir groove is in an arrayed wave-shaped structure, the flow rate can be further reduced during water outlet, the wave-shaped sealing plate structure can make the connection between the water outlet weir groove, the secondary sedimentation tank and the water passage smooth, impact waves and splashing water can be prevented, or the water flow of the secondary sedimentation tank is reduced, the phenomenon of high dissolved oxygen content can be prevented. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the following will briefly introduce the drawings needed to be used in the embodiments, and it should be understood that the following drawings only show some embodiments of the utility model, and should not be regarded as a limitation to the scope, and for those skilled in the art, other related drawings can be obtained without creative labor.

[0019] Figure 1 It is the top view structure schematic diagram provided by the utility model embodiment.

[0020] Figure 2 It is the three-dimensional structure schematic diagram of the water outlet weir groove provided by the utility model embodiment.

[0021] Figure 3 It is the cross section structure schematic diagram of the water outlet weir groove provided by the utility model embodiment.

[0022] Figure 4 It is the three-dimensional structure schematic diagram of the water passage provided by the utility model embodiment.

[0023] The drawings are identified as follows:

[0024] 10, secondary sedimentation tank

[0025] 20, effluent weir tank; 21, sealing plate structure; 22, water passing groove

[0026] 30, water passing channel; 31, upper channel; 32, lower channel; 33, chamfer structure

[0027] 40, sedimentation tank DETAILED DESCRIPTION

[0028] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme of the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are some of the embodiments of the present application, but not all the embodiments of the present application. Based on the embodiments of the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents the selected embodiments of the present application.

[0029] In the description of the present application, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0030] Reference Figure 1As shown in the figure, a water outlet weir groove wave weir plate device includes two sedimentation tanks 10; and a plurality of inclined water outlet weir grooves 20 arranged below the two sedimentation tanks 10, the number of the water outlet weir grooves 20 is 4-6, if too few are installed, the effect of flow splitting is poor, if too many are installed, it may lead to the need to widen the width of the water outlet weir groove 20, and setting multiple water outlet weir grooves 20 will lead to increased cost, in this embodiment, the number of the water outlet weir grooves 20 is 4, setting 4 flow splitting branches at the bottom of the two sedimentation tanks 10 can effectively alleviate the problem of turbulent water flow, and can effectively reduce the cost, the surface of the water outlet weir groove 20 is in a wave-shaped sealing plate structure 21 arranged in an array, the number of the array of the sealing plate structure 21 is 2-4, in this embodiment, the number of the array of the sealing plate structure 21 is 2, if the number of the array is too large, water flow may shake on the wave-shaped sealing plate structure 21 during the process of falling acceleration, thereby causing water flow to splash, leading to an increase in oxygen content, the number of the array of the sealing plate structure 21 is set to 2, which can just slow down the water flow speed, and make the water outlet weir groove 20 and the two sedimentation tanks 10 and the water passing groove 22 connection smoothly transition, prevent the occurrence of shock wave and splashing, or the two sedimentation tanks 10 or the high-efficiency sedimentation tank 40 appear sludge floating, causing the phenomenon of increased dissolved oxygen content to occur, a water passing groove 22 is arranged below the water outlet weir groove 20, the water passing groove 22 can play a certain buffering role, the water passing groove 22 is provided with a water passing channel 30 away from one end of the water outlet weir groove 20; a sedimentation tank 40 is arranged below the water passing channel 30, after the water in the two sedimentation tanks 10 flows out from the water outlet weir groove 20, it can flow along the surface of the water passing groove 22 into the water passing channel 30 and fall into the sedimentation tank 40.

[0031] Referring to Figure 2 As shown in the figure, the connection end of the sealing plate structure 21 and the two sedimentation tanks 10 is arranged to be tangent to the horizontal direction of the two sedimentation tanks 10, and the connection end of the sealing plate structure 21 and the water passing groove 22 is arranged to be tangent to the horizontal direction of the water passing groove 22, which can effectively make the water outlet weir groove 10 and the two sedimentation tanks 10 and the water passing groove 22 transition smoothly.

[0032] Referring to Figure 3 As shown in the figure, the inclination angle α of the water outlet weir groove 20 is 35-42°, in this embodiment, the horizontal length of the water outlet weir groove 20 is 600mm, the vertical height of the water outlet weir groove 20 is 445mm, and the horizontal width of the water outlet weir groove 20 is 460mm, according to the arctangent function formula: α = arctan(445 / 600) = 36.13°, the advantages of such arrangement are that it can reduce the space occupancy rate of the water outlet weir groove 20, and also reduce the dissolved oxygen content of the water flow from the two sedimentation tanks 10 to the sedimentation tank 40.

[0033] Referring toFigure 4 As shown, generally, the water flow of the secondary sedimentation tank 10 still needs to pass through the pipe into the sedimentation tank 40 after passing through the effluent weir tank 20, and the water flow passing through the pipe can also generate shock waves and splashing water, resulting in an increase in dissolved oxygen content, therefore, the water passage 30 comprises an upper passage 31 and a lower passage 32 connected with the upper passage 31, the connection between the upper passage 31 and the water passage tank 22 is provided with an annular chamfer structure 33, which can play a certain buffering role, the side wall section of the upper passage 31 is in an arc shape structure, the side wall section of the lower passage 32 is in a straight wall structure, the inlet size of the upper passage 31 is larger than that of the lower passage 32, as a further improvement, the diameter of the top section of the upper passage 31 is defined as R1, and the diameter of the lower passage 32 is defined as r1, then R1:r1=4~5:3, in this embodiment, the diameter R1 of the top section of the upper passage 31 is 2000mm, and the diameter r1 of the lower passage 32 is 1200mm, therefore, R1:r1=5:3, the height of the upper passage 31 is defined as H1, and the height of the lower passage 32 is defined as h1, then H1:h1=7~9:2, in this embodiment, the height H1 of the upper passage 31 is 1400mm, and the height h1 of the lower passage 32 is 400mm, then H1:h1=7:2, when the water flow passes through the arc-shaped structure of the side wall, it can smoothly and slowly flow to the lower passage 32, reducing the occurrence of water flow splashing.

[0034] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Those skilled in the art can make various changes and modifications to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A corrugated weir plate device for a water outlet weir, characterized in that, The utility model relates to a water treatment device, including: a secondary sedimentation tank (10); and a plurality of inclined water outlet weir grooves (20) arranged below the secondary sedimentation tank (10), the surface of the water outlet weir groove (20) is arranged with a plurality of arrayed wave-shaped sealing plate structures (21), and a water passing groove (22) is arranged below the water outlet weir groove (20); a water passing channel (30) is arranged at the end of the water passing groove (22) away from the water outlet weir groove (20); a sedimentation tank (40) is arranged below the water passing channel (30), and the water in the secondary sedimentation tank (10) can flow to the water passing channel (30) along the surface of the water passing groove (22) after flowing out from the water outlet weir groove (20) and then fall into the sedimentation tank (40).

2. A wave weir device for a sluice channel according to claim 1, wherein The connecting end of the sealing plate structure (21) and the secondary sedimentation tank (10) is arranged to be tangent to the horizontal direction of the secondary sedimentation tank (10), and the connecting end of the sealing plate structure (21) and the water passing groove (22) is arranged to be tangent to the horizontal direction of the water passing groove (22).

3. A wave weir device for a sluice channel according to claim 2, wherein The inclination angle alpha of the water outlet weir groove (20) is 35-42 degrees.

4. A wave weir device for a sluice channel according to claim 3, wherein The number of the water outlet weir groove (20) is 4-6, and the array number of the sealing plate structure (21) is 2-4.

5. A wave weir device for a sluice channel according to claim 1, wherein The water passing channel (30) includes an upper channel (31) and a lower channel (32) connected with the upper channel (31), the side wall section of the upper channel (31) is an arc-shaped structure, the side wall section of the lower channel (32) is a straight wall structure, and the inlet size of the upper channel (31) is larger than that of the lower channel (32).

6. A wave weir device for a sluice channel according to claim 5, wherein The connecting position of the upper channel (31) and the water passing groove (22) is arranged as a ring-shaped chamfer structure (33).

7. A wave weir device for a sluice channel according to claim 6, wherein The diameter of the top section of the upper channel (31) is defined as R1, the diameter of the lower channel (32) is defined as r1, and R1:r1=4-5:

3.

8. A wave weir device for a sluice channel according to claim 7, wherein The height of the upper channel (31) is defined as H1, the height of the lower channel (32) is defined as h1, and H1:h1=7-9:2.

Images