An isolated air water distribution system

Abstract

The present invention relates to the field of water distribution systems, and in particular to an air-isolated water distribution system, comprising an anaerobic reaction tank, wherein a water distribution trough is provided above one side of the anaerobic reaction tank, and the system is characterized in that a plurality of guide pipes are provided in the water distribution trough, and the water outlets of the guide pipes are all connected to water distribution branches, the water distribution branches pass through the bottom surface of the water distribution trough and extend to the bottom end of the anaerobic reaction tank, the water inlet of the guide pipe is lower than the first liquid level of the anaerobic reaction tank, and a pressure detection device is provided at the water inlet of the guide pipe for detecting the pressure at the water inlet of the guide pipe. The pressure detection device is used to detect the pressure at the guide pipe to ensure that the flow rate of each water distribution branch is balanced, and at the same time, the water inlet of the guide pipe is lower than the first liquid level to prevent air from entering the anaerobic reaction tank 1, thereby improving the stability of the device.

Description

Technical Field

[0001] The present invention relates to a water distribution system, in particular to an air-isolated water distribution system. Background Art

[0002] Anaerobic treatment has become one of the important treatment processes for water treatment, especially for high-concentration organic wastewater treatment, due to its low energy consumption and high removal efficiency. The anaerobic reactor is basically composed of a tank body, a water distribution system, a three-phase separator and other systems. Among them, the water distribution system is one of the key factors affecting the effect of anaerobic treatment.

[0003] Hydrolysis tanks and anaerobic reaction tanks generally do not require aeration or strict isolation from air, so water inlet is mostly distributed at multiple points. The current anaerobic water distribution system mainly has the following two methods:

[0004] like Figure 1 As shown in the figure, the first method is high-resistance multi-point water distribution. The high-resistance water distribution system adopts a water distribution method in which the water inlet main pipe and the water distribution branch pipe are directly connected. It relies on increasing the resistance of the water distribution holes to ensure that the head loss of each part is equal, thereby ensuring the uniformity of water distribution. However, the high-resistance water distribution system may have problems such as partial pipe blockage or poor drainage as the system operates, and it is impossible to determine whether the flow of each small branch pipe is uniform.

[0005] like Figure 2 As shown in the second method, the overflow of the high-level water tank enters each water distribution branch pipe, and gravity is used to make the water flow into the bottom of the reaction tank at multiple points. When the sewage overflows into the water distribution branch pipe, it will generally enter the reaction tank with air bubbles due to the high flow rate, causing harm to bacteria that do not require oxygen. Summary of the Invention

[0006] The technical problem to be solved by the present invention is: the problem of uneven flow between various water distribution branches and the problem of air mixing into the anaerobic reaction tank.

[0007] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0008] First, an isolated air water distribution system is provided, including an anaerobic reaction tank, wherein a water distribution trough is provided on one side of the anaerobic reaction tank, and the system is characterized in that a plurality of guide pipes are provided in the water distribution trough, and the water outlets of the guide pipes are all connected to water distribution branches, and the water distribution branches pass through the bottom surface of the water distribution trough and extend to the bottom end of the anaerobic reaction tank, the water inlet of the guide pipe is lower than the first liquid level of the anaerobic reaction tank, and a pressure detection device is provided at the water inlet of the guide pipe for detecting the pressure at the water inlet of the guide pipe.

[0009] Furthermore, a throat pipe is installed at the water inlet of the guide pipe, and the pressure detection device extends into the narrowest part of the throat pipe.

[0010] Furthermore, the pressure detection device includes a clean water tank for containing clean water. A plurality of first liquid level indicator tubes are arranged in the clean water tank. The first liquid level indicator tubes are externally connected to a conduit, which extends into the narrowest part of the corresponding throat.

[0011] Furthermore, a first drain valve is installed on the clean water tank for draining the clean water.

[0012] Furthermore, the first liquid level indicating tube is made of a transparent material and is provided with a scale thereon.

[0013] Furthermore, the pressure detection device includes a vacuum generator, the vacuum generator is externally connected to a plurality of second liquid level indicating tubes, and the second liquid level indicating tubes extend into the narrowest part of the corresponding throat.

[0014] Furthermore, the vacuum generator is externally connected to a vacuum box, the vacuum box is externally connected to a second liquid level indicating tube, and a pressure gauge is installed on the vacuum box.

[0015] Furthermore, the second liquid level indicating tube is made of a transparent material and is provided with a scale thereon.

[0016] Furthermore, a water distribution main pipe is provided on one side of the water distribution tank, and the water distribution main pipe is used to supply water to the water distribution tank.

[0017] Furthermore, a second drain valve is provided on the water distribution tank, and a regulating valve is installed on the water distribution branch pipe.

[0018] The present invention has the following beneficial effects:

[0019] 1. By placing the water inlet of the throat pipe below the first liquid level in the anaerobic reaction tank, it is ensured that when the water level in the water distribution tank is at the same level as the liquid level in the anaerobic reaction tank, air can be isolated, thereby preventing air from entering the anaerobic reaction tank through the throat pipe, thereby improving the stability of the device;

[0020] 2. A pressure detection device is set at the water inlet of the throat pipe, and a scale is set to intuitively display the flow rate at the water inlet of the throat pipe. The flow rate in the throat pipe can be changed by adjusting the valve, so that the flow rate in each throat pipe meets the requirements, avoiding the unobservability problem of water distribution in the closed-circuit system.

[0021] 3. The driving force for the water in the water distribution tank to flow into the anaerobic reaction tank is the height difference between the second liquid level and the first liquid level, which eliminates the influence of the overflow port installation height error on the flow of each branch pipe, ensures the full flow of the water distribution branch pipe, improves the flow capacity of the branch pipe, has a simple structure, reduces costs, and is easy to maintain and repair. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. 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 the structures shown in these drawings without paying any creative work.

[0023] Figure 1 This is a structural diagram of the first method of the prior art;

[0024] Figure 2 This is a structural diagram of the second method of the prior art;

[0025] Figure 3 It is a structural diagram of the first embodiment;

[0026] Figure 4 Schematic diagram of the structure of the second embodiment. DETAILED DESCRIPTION

[0027] In order to better explain the present invention and facilitate understanding, the present invention is described in detail below through specific implementation methods in conjunction with the accompanying drawings.

[0028] It should be noted that all directional indications in the embodiments of the present invention are only used to explain the relative position relationship and movement status of various components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0029] In addition, the terms "first," "second," and so on, used in this disclosure are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referenced. Thus, a feature specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this disclosure, "plurality" means at least two, such as two or three, unless otherwise specifically defined.

[0030] In the present invention, unless otherwise specified or limited, the terms "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can mean fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will be able to understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0031] The present invention provides an isolated air water distribution system, such as Figure 3As shown, it includes an anaerobic reaction tank 1, a water distribution trough 2 is provided above one side of the anaerobic reaction tank 1, and several guide pipes are provided in the water distribution trough 2. The water outlets of the guide pipes are connected to the water distribution branch pipes 4, and the water distribution branch pipes 4 extend into the bottom of the anaerobic reaction tank 1. In order to better introduce water into the anaerobic reaction tank 1, the water distribution branch pipes 4 pass through the bottom surface of the water distribution trough 2 to ensure that water flows into the anaerobic reaction tank 1 under the action of gravity. At the same time, the second liquid level 22 in the water distribution trough 2 is higher than the first liquid level 11 in the anaerobic reaction tank 1, so that the second liquid level 22 and the first liquid level 11 are higher than the second liquid level 22. Under the action of the hydraulic height difference of the first liquid level 11, water flows into the anaerobic reaction tank 1 through the guide pipe and the water distribution branch pipe 4. At the same time, the height of the water inlet of the guide pipe is lower than the height of the first liquid level 11. In this way, even when the liquid in the water distribution tank 2 flows into the anaerobic reaction tank 1 until the first liquid level 11 and the second liquid level 2 are flush, the water inlet of the guide pipe is still immersed in water and is not exposed to the air, thereby preventing air from entering the anaerobic reaction tank 1. A second drain valve 21 is provided on the drainage tank 2 for draining the water in the water distribution tank 2.

[0032] In this embodiment, a pressure detection device is provided at the water inlet of the guide pipe, which is used to detect the pressure at the water inlet of the guide pipe. The flow rate in each water distribution branch pipe 4 can be obtained by detecting the pressure at the water inlet of the guide pipe, which is used to ensure the flow rate in each water distribution branch pipe 4. At the same time, a regulating valve 41 is installed on the water distribution branch pipe 4. When the flow rates in the water distribution branch pipe 4 are inconsistent, the regulating valve 41 can be adjusted to ensure that the flow rate in each water distribution branch pipe 4 is balanced.

[0033] In order to make the pressure detection device more accurate in detecting the pressure at the water inlet of the guide pipe, the guide pipe is the throat pipe 42, and the pressure detection device is inserted into the narrowest part of the throat pipe 42. According to the Bernoulli principle, the flow velocity U is the fastest at the narrowest part of the throat pipe 42, and the pressure difference between the inside and outside of the pressure detection device is Umax. 2 / 2g, its value can be expressed more accurately on the scale, and its pressure is the smallest.

[0034] First embodiment

[0035] The pressure detection device includes a clean water tank 6, which is filled with clean water. Several first liquid level indicator tubes 51 are arranged in the clean water tank 6. One end of the first liquid level indicator tube 51 extends into the clean water, and the other end of the first liquid level indicator tube 51 is connected to a conduit 5, which extends into the narrowest part of the throat 42.

[0036] In this embodiment, when the water in the water distribution tank 2 flows into the water distribution branch pipe 4 through the throat pipe 42, the flow rate at the narrowest part of the throat pipe 42 is the fastest, and the pressure in the corresponding first liquid level indicator tube 51 is the smallest. Therefore, under the action of atmospheric pressure, the clean water in the clean water tank 6 is squeezed into the first liquid level indicator tube 51. At this time, the height of the liquid column in the first liquid level indicator tube 51 can correspond to the throat flow rate one by one. When the liquid column in the first hydraulic indicator tube 51 is higher, the pressure at the corresponding throat pipe 42 is smaller. When the height of the column liquid in each first hydraulic indicator tube 51 is within the allowable range, it indicates that the flow rate in the throat pipe 42 is within the preset range. When the height of the column liquid does not meet the requirements, the flow rate in the throat pipe 42 can be changed by adjusting the corresponding regulating valve 41 so that the flow rate meets the requirements.

[0037] In this embodiment, a first drain valve 61 is provided on the clean water tank 6 for draining the clean water tank 6 so that the pressure in the conduit 5 is connected to the atmosphere. When the clean water tank 6 is replenished with clean water again, the pressure in the conduit 5 can be made equal to atmospheric pressure, thereby reducing the occurrence of errors during use and making the detected flow rate more accurate.

[0038] In order to better observe the column liquid, the first liquid level indicator tube 51 is made of transparent material and is provided with a scale.

[0039] Second embodiment

[0040] The pressure detection device includes a vacuum generator 7, which is externally connected to a vacuum box 72. The vacuum box 72 is externally connected to several second liquid level indicator tubes 73. The second liquid level indicator tubes 73 extend into the narrowest part of the corresponding throat 42. A pressure gauge 71 is installed on the vacuum box 72 for detecting the pressure inside the vacuum box 72.

[0041] In this embodiment, when water flows through the narrowest part of the throat pipe 42, the pressure decreases. Since the second liquid level indicator tube 73 is externally connected to the vacuum box 72, the liquid in the water distribution tank 2 is sucked into the second liquid level indicator tube 73. At this time, the liquid level in the second liquid level indicator tube 73 is the difference between the vacuum degree in the vacuum box 72 and the dynamic pressure value in the throat pipe 42. The vacuum degree in the vacuum box 72 can be known through the pressure gauge 71, and the flow rate in the throat pipe 42 can be known through further calculation. When the vacuum degree in the vacuum box 72 is changed, the column liquid will also change under the condition that the pressure at the throat pipe 42 remains unchanged. Through this change, the column liquid can be made higher than the liquid level of the water distribution tank 2, which is more obvious, thereby facilitating observation by staff and reducing human errors.

[0042] In order to better observe the column liquid, the second hydraulic pressure indicator tube 73 is made of a transparent material and is provided with a scale.

[0043] It should be understood that the above description of the specific embodiments of the present invention is merely for the purpose of illustrating the technical approach and features of the present invention. Its purpose is to enable those skilled in the art to understand the contents of the present invention and implement them accordingly. However, the present invention is not limited to the above-described specific embodiments. Any changes or modifications made within the scope of the claims of the present invention are intended to be covered by the scope of protection of the present invention.

Claims

1. An air-isolated water distribution system, comprising an anaerobic reaction tank (1), wherein a water distribution tank (2) is provided above one side of the anaerobic reaction tank (1), characterized in that: Several guide pipes are provided in the water distribution trough (2), and the water outlet of each guide pipe is connected to a water distribution branch pipe (4). Each water distribution branch pipe (4) passes through the bottom surface of the water distribution trough (2) and extends to the bottom end of the anaerobic reaction tank (1). The water inlet of each guide pipe is lower than the first liquid level (11) of the anaerobic reaction tank (1). A pressure detection device is provided at the water inlet of each guide pipe for detecting the pressure at the water inlet of the guide pipe; Each guide pipe water inlet is also equipped with a throat pipe (42), and each pressure detection device is inserted into the narrowest part of the corresponding throat pipe (42) to determine the flow rate of the corresponding water distribution branch pipe (4) according to the detected pressure value; A regulating valve (41) is installed on each water distribution branch pipe (4) to control the flow of each water distribution branch pipe (4) through the regulating valve (41) and balance the flow of each water distribution branch pipe (4); The pressure detection device comprises a clean water tank (6) for containing clean water. A plurality of first liquid level indicator tubes (51) are arranged in the clean water tank (6). The first liquid level indicator tubes (51) are externally connected to a conduit (5). The conduit (5) extends into the narrowest part of the corresponding throat (42). The first liquid level indicator tubes (51) are made of a transparent material and are provided with scales.

2. The air isolation water distribution system according to claim 1, characterized in that: A first drain valve (61) is installed on the clean water tank (6) for draining the clean water.

3. The air isolation water distribution system according to claim 1, characterized in that: The pressure detection device comprises a vacuum generator (7), the vacuum generator (7) is externally connected to a plurality of second liquid level indicating tubes (73), and the second liquid level indicating tubes (73) extend into the narrowest part of the corresponding throat (42).

4. The air isolation water distribution system according to claim 3, characterized in that: The vacuum generator (7) is externally connected to a vacuum box (72), the vacuum box (72) is externally connected to a second liquid level indicator tube (73), and a pressure gauge (71) is installed on the vacuum box (72).

5. The air isolation water distribution system according to claim 3, characterized in that: The second liquid level indicator tube (73) is made of a transparent material and is provided with a scale.

6. An isolated air water distribution system according to any one of claims 1 to 5, characterized in that: A water distribution main pipe (3) is provided on one side of the water distribution tank (2), and the water distribution main pipe (3) is used to supply water to the water distribution tank (2).

7. An isolated air water distribution system according to any one of claims 1 to 5, characterized in that: A second drain valve (21) is provided on the water distribution tank (2).

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