Precipitation device and solid-liquid separation device

Abstract

The present invention discloses a precipitation device and a solid-liquid separation device, and relates to the technical field of solid-liquid separation, the precipitation device comprises a plurality of inclined plate groups and partition plates, the plurality of inclined plate groups are sequentially arranged, each inclined plate group comprises two parallel inclined plates with intervals, the inclination angles of all the inclined plates are the same, and the partition plates are arranged in the inclined plate groups. The inclined plates are arranged in each inclined plate group, the distance between any two adjacent inclined plates is the same, a flat flow channel is formed between the two inclined plates in each inclined plate group, a sludge discharge channel is formed between any two adjacent inclined plate groups, and a water inlet and a water outlet are formed in the two ends of the flat flow channel in the horizontal direction respectively; the two ends of the sludge discharge channel in the horizontal direction are sealed by water retaining structures; a plurality of partition plates are fixed in each advection channel, all the partition plates are arranged in parallel, the partition plates are perpendicular to the inclined plate, and every two adjacent partition plates and the inclined plate between the two partition plates form an advection pipe; and the bottom of each advection pipe is provided with a sludge discharge window. The method is convenient to manufacture and good in precipitation effect.

Description

Technical Field

[0001] The invention relates to the technical field of solid-liquid separation, in particular to a precipitation device and a solid-liquid separation device. Background Art

[0002] A sedimentation tank is a kind of building that uses the natural sedimentation or coagulation sedimentation of water to remove suspended matter in water. According to the difference in the direction of water flow in the tank, there are generally horizontal flow, vertical flow and radial flow sedimentation tanks in water treatment plants. In 1904, American Hazen proposed the shallow pool sedimentation theory, that is, dividing the sedimentation tank into n layers can increase the processing capacity by n times. Based on this, people place plate components with a certain angle to the horizontal plane in the sedimentation tank to increase the actual sedimentation area, effectively improving the processing efficiency of the sedimentation tank, thus producing the inclined plate sedimentation tank widely used today. Over the past 100 years, the industry has successively developed inclined plate sedimentation tanks, inclined tube sedimentation tanks, maze sedimentation tanks, etc., whose structural designs are close to the ideal "shallow pool" state, but still have defects such as poor sedimentation effect, low life and complex production. Summary of the invention

[0003] The purpose of the present invention is to provide a precipitation device and a solid-liquid separation device to solve the problems existing in the above-mentioned prior art, improve the precipitation effect and facilitate production.

[0004] To achieve the above object, the present invention provides the following solutions: The present invention provides a sedimentation device, comprising: multiple groups of inclined plate groups and partitions. Multiple groups of the inclined plate groups are arranged in sequence, each group of the inclined plate groups includes two parallel inclined plates with a spacing, all the inclined plates have the same inclination angle, and the spacing between any two adjacent inclined plates is the same. A horizontal flow channel is formed between the two inclined plates in each group of the inclined plate groups, and a mud discharge channel is formed between any two adjacent groups of the inclined plate groups. The two ends of the horizontal flow channel are respectively a water inlet and a water outlet; the two ends of the mud discharge channel are closed by a water retaining structure; multiple partitions are fixed in each of the horizontal flow channels, all the partitions are arranged in parallel with each other, the partitions are perpendicular to the inclined plates, and each two adjacent partitions and the inclined plate between the two partitions form a horizontal flow tube; the bottom of each of the horizontal flow tubes is provided with a mud discharge window, and the mud discharge window is opened on the inclined plate located below.

[0005] Preferably, two mud discharge windows are provided on each of the horizontal flow tubes, and the total length of the two mud discharge windows on each of the horizontal flow tubes accounts for 80% of the length of the horizontal flow tube.

[0006] Preferably, the angles between the inclined plate and the partition and the horizontal plane are both 45°.

[0007] Preferably, a flat plate is fixedly provided on the water inlet side and the water outlet side of the inclined plate group, each of the inclined plates is fixedly connected to the flat plate, and a through hole is opened on the part of the flat plate facing the horizontal flow tube, and the through hole is the same size and shape as the water inlet and outlet of the horizontal flow tube.

[0008] Preferably, the bottom edges of a plurality of the inclined plates are located on a first horizontal plane, and the bottom edges of the remaining inclined plates are located on a first vertical plane; the top edges of a plurality of the inclined plates are located on a second horizontal plane, and the top edges of the remaining inclined plates are located on a second vertical plane; the first horizontal plane, the second horizontal plane, the first vertical plane, and the second vertical plane are four sides of a cuboid or a cube; A vertical mud discharge chute is arranged on the side of the first vertical plane away from the inclined plate, and both ends of the mud discharge chute in the horizontal direction are closed by the flat plate.

[0009] Preferably, the number of the inclined plates whose bottom edges are located on the first horizontal plane is a, the number of the remaining inclined plates is b, and the difference between a and b is not greater than 2.

[0010] The present invention also provides a solid-liquid separation device, comprising a lower layer mud discharge device and the sedimentation device as described above; the lower layer mud discharge device is arranged directly below the sedimentation device.

[0011] Preferably, the lower layer mud discharge device includes a mud storage tank, a mud discharge pipe and a mud discharge valve, the top of the mud storage tank is connected to the bottom of the sedimentation device, the mud discharge pipe is connected to the bottom of the mud storage tank, and the mud discharge valve is arranged on the mud discharge pipe.

[0012] Preferably, the inner wall of the mud storage tank gradually extends inward from top to bottom.

[0013] Preferably, the mud storage tank is a frustum-shaped structure.

[0014] Compared with the prior art, the present invention has achieved the following technical effects: The distance between any adjacent inclined plates of the present invention is the same, that is, the width of the horizontal flow tube is the same as the width of the mud discharge channel, which greatly increases the width of the mud discharge channel, thereby reducing the risk of blockage of the mud discharge channel and ensuring the high efficiency of the sedimentation separation device. Secondly, the distance between the inclined plates is the same, and the partitions are arranged vertically with the inclined plates, so that the overall structure is standardized and easy to assemble and manufacture. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 A schematic diagram of the structure of a precipitation device provided in an embodiment of the present invention; Figure 2 A schematic diagram of the structure of a solid-liquid separation device provided in an embodiment of the present invention; Figure 3 for Figure 1 and Figure 2 Schematic diagram of the structure of the medium advection tube; Figure 4 for Figure 2 Structural schematic diagram of the middle and lower layer mud discharge device; In the figure: 1- inclined plate; 2- inclined plate group; 3- partition plate; 4- mud discharge channel; 5- horizontal flow pipe; 6- mud storage tank; 7- mud discharge pipe; 8- mud discharge chute; 9- mud discharge window; 10- mud discharge valve; 11- flat plate. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0019] In the related art, the width of the mud discharge channel is usually set to be much smaller than the width of the horizontal flow channel, which easily causes the mud discharge channel to be blocked, affecting the operation effect of the mud discharge channel to a certain extent. Secondly, the cross-section of the horizontal flow pipe is usually set to an irregular shape, such as a diamond cross-section, a triangular cross-section, etc., which not only increases the difficulty of manufacturing the device, but also, due to the limitation of the cross-section of the horizontal flow pipe, the overall shape of the sedimentation device is difficult to control. For example, the horizontal flow pipe with a diamond cross-section will be difficult to splice into a regular rectangular cross-section. Since the existing sedimentation tank is usually a rectangular or cube-shaped structure, this leads to low space utilization, which in turn affects the sedimentation efficiency.

[0020] The following will be combined Figures 1 to 4 Embodiments of the present invention are described.

[0021] The present invention provides a precipitation device, such as Figure 2 and Figure 3 As shown, it includes: multiple groups of inclined plate groups 2 and partitions 3.

[0022] A plurality of inclined plate groups 2 are arranged in sequence, each inclined plate group 2 comprises two parallel inclined plates 1 with a gap, all inclined plates 1 have the same inclination angle, and the spacing between any two adjacent inclined plates 1 is the same, a horizontal flow channel is formed between the two inclined plates 1 in each inclined plate group 2, and a mud discharge channel 4 is formed between any two adjacent inclined plate groups 2, and the two ends of the horizontal flow channel are respectively a water inlet and a water outlet; the two ends of the mud discharge channel 4 are closed by a water retaining structure in the horizontal direction; a plurality of partitions 3 are fixed in each horizontal flow channel, all the partitions 3 are arranged in parallel, the partitions 3 are perpendicular to the inclined plates 1, and every two adjacent partitions 3 and the inclined plate 1 between the two partitions 3 form a horizontal flow tube 5; a mud discharge window 9 is provided at the bottom of each horizontal flow tube 5, and the mud discharge window 9 is opened on the inclined plate 1 located below.

[0023] In the embodiment of the present invention, the distance between any adjacent inclined plates 1 is the same, that is, the width of the horizontal flow tube 5 is the same as the width of the mud discharge channel 4, which greatly increases the width of the mud discharge channel 4, thereby reducing the risk of blockage of the mud discharge channel 4 and ensuring the high efficiency of the sedimentation separation device. Secondly, the distance between the inclined plates 1 is the same, and the partition 3 is vertically arranged with the inclined plate 1, so that the overall structure is standardized and easy to assemble and manufacture.

[0024] In some embodiments, two mud discharge windows 9 are provided on each horizontal flow tube 5 , and the total length of the two mud discharge windows 9 on each horizontal flow tube 5 accounts for 80% of the length of the horizontal flow tube 5 .

[0025] It is worth noting that the two mud discharge windows 9 in the present invention are arranged at intervals, that is, the structure between the two mud discharge windows 9 is equivalent to a reinforcing rib. Therefore, this embodiment takes into account both the structural strength and the mud discharge effect of the horizontal flow tube 5. On the other hand, if the two mud discharge windows 9 are connected as a whole and the width is still 80% of the length of the horizontal flow tube 5, it can only ensure a good mud discharge effect, and its structural strength and service life are low. If the proportion of the mud discharge window 9 is shortened in order to enhance the structural strength, the mud discharge effect will be greatly reduced. The present application takes into account both the mud discharge effect and the structural strength, or in other words, takes into account both the mud discharge effect and the stability of the mud discharge.

[0026] In some embodiments, the angles between the inclined plate 1 and the partition plate 3 and the horizontal plane are both 45°.

[0027] In this embodiment, the inclined plate 1 and the partition plate 3 are inclined in opposite directions. This shape will be more standardized and easy to manufacture on a large scale.

[0028] In some embodiments, such as Figure 1As shown, a flat plate 11 is fixedly provided on the water inlet and outlet sides of the inclined plate group 2, and each inclined plate 1 is fixedly connected to the flat plate 11. A through hole is provided on the portion of the flat plate 11 facing the horizontal flow tube 5, and the through hole has the same size and shape as the water inlet and outlet of the horizontal flow tube 5. The material of the flat plate 11, the partition plate 3 and the inclined plate 1 is usually selected to be the same material, such as a stainless steel plate, a plastic plate, etc.

[0029] In this embodiment, the flat plate 11 is the above-mentioned water retaining structure. The flat plate 11 is connected to each inclined plate 1, and the partition plate 3 is connected to the inclined plate 1, which makes the sedimentation device form a modular structure, which is conducive to prefabrication in the factory and convenient for mass production.

[0030] The connection between the flat plate 11 and each inclined plate 1 and between the partition plate 3 and the inclined plate 1 can be welding, bonding, riveting, etc. The present invention is not limited to this.

[0031] In some embodiments, the bottom edges of multiple inclined plates 1 are located on a first horizontal plane, and the bottom edges of the remaining inclined plates 1 are located on a first vertical plane; the top edges of multiple inclined plates 1 are located on a second horizontal plane, and the top edges of the remaining inclined plates 1 are located on a second vertical plane; the first horizontal plane, the second horizontal plane, the first vertical plane and the second vertical plane are the four sides of a cuboid or a cube; a vertical mud discharge chute 8 is provided on the side of the first vertical plane away from the inclined plate 1, and the two ends of the mud discharge chute 8 in the horizontal direction are closed by flat plates 11.

[0032] The overall structure of the sedimentation device in this embodiment is a cube or a rectangular parallelepiped structure, which is suitable for the structure of most sedimentation tanks.

[0033] In some embodiments, the number of inclined plates 1 whose bottom edges are located on the first horizontal plane is a, the number of remaining inclined plates 1 is b, and the difference between a and b is not greater than 2.

[0034] In this embodiment, the length and width of the precipitation device are made close to each other, so that the cross section is approximately square.

[0035] An embodiment of the present invention further provides a solid-liquid separation device, comprising a lower layer mud discharge device and a sedimentation device as in any one of the above embodiments; the lower layer mud discharge device is arranged directly below the sedimentation device.

[0036] This embodiment has all the advantages of the above-mentioned precipitation device, which will not be described in detail here.

[0037] In the related art, the mud discharge structure of the sedimentation tank has many details and is difficult to manufacture and clean. Based on this, the present invention provides the following embodiments to solve this defect.

[0038] In some embodiments, the lower mud discharge device includes a mud storage tank 6, a mud discharge pipe 7 and a mud discharge valve 10. The top of the mud storage tank 6 is connected to the bottom of the sedimentation device, the mud discharge pipe 7 is connected to the bottom of the mud storage tank 6, and the mud discharge valve 10 is arranged on the mud discharge pipe 7. Specifically, the inner wall of the mud storage tank 6 gradually extends inward from top to bottom.

[0039] In this embodiment, the sludge settles at the bottom of the sludge storage tank 6 under the action of gravity. When the sludge accumulates to a certain extent, the sludge discharge valve 10 is opened, and the sludge is discharged from the sludge discharge pipe 7 along with the water flow. This design is relatively simple and convenient for reasonable sludge discharge.

[0040] In some embodiments, the mud storage tank 6 is a frustum-shaped structure. Specifically, the angle between the side wall of the mud storage tank 6 and the horizontal plane is 45-75 degrees, and the specific angle is determined according to the actual scene.

[0041] The frustum-shaped structure in this embodiment refers to a structure remaining after removing the tip portion of a polygonal pyramid.

[0042] It is worth noting that the mud storage tank 6 can also be a truncated cone structure, or a structure with a curved inner wall but a gradually decreasing cross-sectional area.

[0043] The principle of the solid-liquid separation device provided by the present invention is as follows: Incoming water: Figure 2 As shown, the incoming water flows inward or outward in a direction perpendicular to the paper surface. The incoming water enters from one end of the horizontal flow tube 5 and flows out from the other end. Since the mud discharge channel 4 is closed at both ends, it is a static liquid area to prevent the incoming water from impacting the sediment in the mud discharge channel 4.

[0044] Precipitation: Figure 3 As shown, after the sewage enters the horizontal flow pipe 5, the suspended particles sink along the pipe wall due to gravity, and sink into the mud discharge channel 4 from the pipe along the mud discharge window 9. Both ends of the mud discharge channel 4 are closed to form a static liquid area; the mud discharge channel 4 directly connected to the lower mud storage tank 6 area will sink the sludge directly into the mud storage tank 6, and the channel opening pointing to the side will sink vertically from the side to the lower mud storage tank 6 along the vertical mud discharge chute 8 specially reserved on the side; the sludge is deposited and slid down in the mud discharge chute 8 and the mud discharge channel 4 due to gravity, realizing the solid-liquid separation in the square cross-section horizontal flow pipe 5.

[0045] Sludge discharge: When the sludge accumulates to a certain extent in the sludge storage tank 6, the sludge discharge valve 10 is opened, and the sludge is discharged from the sludge storage tank 6 along with the water flow.

[0046] Description: The present invention utilizes the principle of shallow sedimentation. The product provided by the present invention can be applied to various scenarios such as sedimentation tanks in sewage treatment plants and river weir structures. The upper sedimentation device is an integral structure, and the lower mud discharge device can be designed and manufactured with different materials and sizes according to the usage scenario.

[0047] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A precipitation device, characterized in that: include: Multiple groups of inclined plate groups, the multiple groups of inclined plate groups are arranged in sequence, each group of the inclined plate groups includes two parallel inclined plates with a gap, the inclination angles of all the inclined plates are the same, the spacing between any two adjacent inclined plates is the same, a horizontal flow channel is formed between the two inclined plates in each group of the inclined plate groups, and a mud discharge channel is formed between any two adjacent groups of the inclined plate groups, and the two ends of the horizontal flow channel are respectively a water inlet and a water outlet; the two ends of the mud discharge channel in the horizontal direction are closed by a water retaining structure; Partitions, multiple partitions are fixed in each of the horizontal flow channels, all of the partitions are arranged parallel to each other, the partitions are perpendicular to the inclined plates, and every two adjacent partitions and the inclined plate between two partitions form a horizontal flow tube; a mud discharge window is provided at the bottom of each horizontal flow tube, and the mud discharge window is opened on the inclined plate below.

2. The precipitation device according to claim 1, characterized in that: There are two mud discharge windows on each of the horizontal flow tubes, and the total length of the two mud discharge windows on each of the horizontal flow tubes accounts for 80% of the length of the horizontal flow tube.

3. The precipitation device according to claim 1, characterized in that: The angles between the inclined plate and the partition and the horizontal plane are both 45°.

4. The precipitation device according to claim 1, characterized in that: A flat plate is fixedly provided on the water inlet and outlet sides of the inclined plate group, each of the inclined plates is fixedly connected to the flat plate, a through hole is provided on the portion of the flat plate facing the horizontal flow pipe, and the through hole has the same size and shape as the water inlet and outlet of the horizontal flow pipe.

5. The precipitation device according to claim 4, characterized in that: The bottom edges of a plurality of the inclined plates are located on a first horizontal plane, and the bottom edges of the remaining inclined plates are located on a first vertical plane; the top edges of a plurality of the inclined plates are located on a second horizontal plane, and the top edges of the remaining inclined plates are located on a second vertical plane; the first horizontal plane, the second horizontal plane, the first vertical plane, and the second vertical plane are four sides of a cuboid or a cube; A vertical mud discharge chute is arranged on the side of the first vertical plane away from the inclined plate, and both ends of the mud discharge chute in the horizontal direction are closed by the flat plate.

6. The precipitation device according to claim 5, characterized in that: The number of the inclined plates whose bottom edges are located on the first horizontal plane is a, and the number of the remaining inclined plates is b, and the difference between a and b is not greater than 2.

7. A solid-liquid separation device, characterized in that: It comprises a lower layer mud discharge device and a sedimentation device according to any one of claims 1 to 6; the lower layer mud discharge device is arranged directly below the sedimentation device.

8. The solid-liquid separation device according to claim 7, characterized in that: The lower mud discharge device includes a mud storage tank, a mud discharge pipe and a mud discharge valve. The top of the mud storage tank is connected to the bottom of the sedimentation device, the mud discharge pipe is connected to the bottom of the mud storage tank, and the mud discharge valve is arranged on the mud discharge pipe.

9. The solid-liquid separation device according to claim 8, characterized in that: The inner wall of the mud storage tank gradually extends inward from top to bottom.

10. The solid-liquid separation device according to claim 9, characterized in that: The mud storage tank is a frustum-shaped structure.

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