Fibrous pollutant trapping and cleaning device used in front of rotary drum type fine grid

Abstract

The utility model discloses a fibrous pollutant trapping and cleaning device used in front of a rotary drum type fine grid, which comprises a stop valve, a cleaning bin and a check valve which are sequentially arranged on a sewage pipeline along the flowing direction of sewage, two ends of the cleaning bin are respectively communicated with the sewage pipeline at a water inlet end and a water outlet end, an emptying valve is arranged at the bottom of a bin body of the cleaning bin, and the check valve is communicated with the check valve. A trapping assembly used for trapping fibrous pollutants is installed in the bin body, and an incineration assembly used for conducting incineration treatment on the fibrous pollutants trapped on the trapping assembly is further arranged in the bin body. The cleaning bin with the emptying valve, the trapping assembly and the incineration assembly is arranged in the sewage pipeline, the stop valve and the check valve are additionally arranged on the front portion and the rear portion of the cleaning bin, fibrous pollutants such as hair in sewage are effectively intercepted, trapped and incinerated, and therefore stable operation of the rotary drum type fine screen and the follow-up treatment process is guaranteed, and the service life of the rotary drum type fine screen is prolonged. The overall operation efficiency and the water quality purification effect of a sewage treatment plant are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage treatment, in particular to a device for collecting and cleaning fibrous pollutants in front of a rotary drum type fine grid. Background Art

[0002] In the refined management of sewage treatment plants, the pretreatment stage plays a crucial role, directly impacting the effectiveness and stability of subsequent treatment processes. Fine drum screens, commonly used in pretreatment processes, are primarily used to intercept suspended matter, fine particles, and some solid waste in wastewater, playing a significant role in improving water quality. However, when treating municipal wastewater, fine drum screens face significant challenges in removing fibrous materials such as hair.

[0003] Fibrous materials such as hair are slender, soft, and easily entangled. These characteristics make them easily intertwined and form larger clumps when passing through the fine drum screen. These clumps are not only easily stuck in the screen holes, causing the screen to clog and affecting the normal flow of wastewater, but also increase the operating energy consumption of the equipment and reduce the overall treatment efficiency. In addition, traditional fine drum screen cleaning systems, such as spraying or brushing, often have difficulty completely removing these tightly entangled fiber impurities, further exacerbating the clogging problem of the screen. In view of the above problems, there is an urgent need for a device that can effectively remove hair and other fibrous materials that are entangled and accumulated on the fine drum screen. Utility Model Content

[0004] The utility model aims to provide a device for collecting and cleaning fibrous pollutants in front of a rotary drum type fine grid, so as to solve the technical problems described in the background technology.

[0005] In order to achieve the above technical objectives, the present invention adopts the following technical solutions:

[0006] A device for capturing and cleaning fibrous pollutants in front of a rotary drum fine screen comprises a stop valve, a cleaning chamber and a check valve which are sequentially arranged on a sewage pipe along the flow direction of the sewage. Both ends of the cleaning chamber are respectively connected to the sewage pipes at the water inlet and the water outlet. A vent valve is provided at the bottom of the chamber body. A capturing assembly for capturing fibrous pollutants is installed inside the chamber body. An incineration assembly for incinerating the fibrous pollutants captured by the capturing assembly is also provided inside the chamber body.

[0007] Preferably, a pressure gauge is also provided on the sewage pipe.

[0008] Preferably, the pressure gauges are arranged in pairs, and the two sets of pressure gauges arranged in pairs are respectively installed on the sewage pipes at both ends of the cleaning bin.

[0009] Preferably, the cleaning chamber is also provided with a flue gas recovery and treatment component for collecting flue gas generated during the incineration treatment of fibrous pollutants.

[0010] Preferably, the cleaning chamber is also provided with a combustion-supporting component for promoting the incineration of fibrous pollutants.

[0011] Preferably, expansion joints are provided on the sewage pipes at the front and rear ends of the cleaning bin.

[0012] Preferably, two sets of parallel sewage pipes are included, and the two sets of sewage pipes form a parallel double-pipe system, wherein one set of sewage pipes is used as pipe A, and the other set of sewage pipes is used as pipe B.

[0013] Preferably, a central control system is also included, which is connected to the stop valve, vent valve and incineration component, and can control the opening and closing status of the stop valve, vent valve and incineration component. The central control system controls the opening and closing of the stop valve to put one group of sewage pipes in the parallel double-pipe system into a flow state and the other group of sewage pipes into a cut-off state.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] 1. This utility model installs a cleaning chamber with a vent valve, a capture component, and an incineration component in the sewage pipe, and adds stop valves and check valves before and after the cleaning chamber to effectively intercept, capture, and incinerate fibrous pollutants such as hair in the sewage, thereby ensuring the stable operation of the rotary drum fine screen and subsequent treatment processes, and improving the overall operating efficiency and water purification effect of the sewage treatment plant;

[0016] 2. The utility model forms a parallel double-pipe system through two groups of sewage pipes, and automatically switches pipe A and pipe B through the central control system. The two groups of pipes A and B serve as backup for each other, which effectively improves the treatment efficiency of fibrous pollutants and reduces manual maintenance costs, and ensures the continuous operation of the sewage treatment plant without the need to stop production for maintenance, providing a basis for the stable and continuous operation of subsequent treatment processes. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and / or other aspects and advantages of the present invention will become clearer and easier to understand through the detailed description made in conjunction with the following drawings. These drawings are only illustrative and do not limit the present invention, wherein:

[0018] Figure 1 It is a structural diagram of the utility model;

[0019] Figure 2 This is a structural diagram of the parallel double-pipe system involved in the present utility model.

[0020] Figure numerals: 1. Sewage pipe; 2. Stop valve; 3. Expansion joint; 4. Pressure gauge; 5. Cleaning chamber; 6. Capture assembly; 7. Incineration assembly; 8. Vent valve; 9. Flue gas recovery and treatment assembly; 10. Combustion-supporting assembly; 11. Check valve. DETAILED DESCRIPTION

[0021] Below, an embodiment of a device for collecting and cleaning fibrous contaminants in front of a rotary drum fine screen according to the present invention will be described with reference to the accompanying drawings. The embodiments described herein are specific embodiments of the present invention, used to illustrate the concepts of the present invention. They are illustrative and exemplary only and should not be construed as limiting the embodiments and scope of the present invention. In addition to the embodiments described herein, those skilled in the art may also employ other obvious technical solutions based on the claims and disclosure of this application, including those employing any obvious substitutions or modifications to the embodiments described herein.

[0022] In the description of the present invention, it should be noted that the terms "front," "back," "left," "right," "top," "bottom," "upper," "lower," "inner," "outer," "horizontal," "vertical," "upright," and "oblique" and the like, indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of the present invention and simplify the description. They are not intended to indicate or imply that the devices or components referred to must have a specific direction, be constructed, or operate in a specific direction. Therefore, they should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] The accompanying drawings in this specification are schematic diagrams that assist in illustrating the concepts of the present invention and schematically illustrate the shapes of the various components and their interrelationships. Please note that to clearly illustrate the structures of the various components of the embodiments of the present invention, the drawings are not drawn to the same scale. The same reference numerals are used to indicate the same parts.

[0024] The following describes the principles and features of the present invention in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not intended to limit the scope of the present invention. Figure 1-2 , the preferred embodiments of the present invention are further described in detail:

[0025] like Figure 1As shown, the present invention is preferably a fibrous pollutant capture and cleaning device for use in front of a rotary drum fine screen, which is arranged in the front section of the rotary drum fine screen and is used to remove fibrous pollutants such as hair in sewage. It includes a stop valve 2, a cleaning chamber 5 and a check valve 11 arranged in sequence on a sewage pipe 1 along the flow direction of sewage. The two ends of the cleaning chamber 5 are respectively connected to the sewage pipe 1 at the water inlet and the water outlet. A vent valve 8 is provided at the bottom of the chamber body. A capture component 6 for capturing fibrous pollutants is installed inside the chamber body, and an incineration component 7 for incinerating the fibrous pollutants captured by the capture component 6 is also provided inside the chamber body.

[0026] Among them, the cleaning bin 5 is a pipe section made of corrosion-resistant and high-temperature resistant materials (such as special alloys or ceramic materials), which is installed in series on the sewage pipe 1. The stop valve 2 is installed at the water inlet end of the cleaning bin 5 to control the on and off of the water flow, creating a waterless environment for the cleaning bin 5 to facilitate the function of the incineration component 7. The stop valve 2 preferably adopts the structural form of a knife gate valve and is made of corrosion-resistant and well-sealed materials to ensure that it can effectively block the water flow in the closed state to prevent sewage leakage. The check valve 11 is installed at the water outlet end of the cleaning bin 5 to prevent water backflow and cooperate with the stop valve 2 to create a waterless environment in the cleaning bin 5. The vent valve 8 is installed at the bottom of the cleaning bin 5 to drain the water in the bin in preparation for the incineration cleaning process. The vent valve 8 is selected from corrosion-resistant, high-temperature resistant and well-sealed models to ensure the emptying effect. The sewage discharged by the vent valve 8 can be returned to the water inlet sewage pipe 1 by gravity or pumping or directly discharged into the sewage pipe network of the factory area;

[0027] The main body of the capture component 6 is made of a special alloy or ceramic material with high strength, corrosion resistance, non-flammability and heat resistance and excellent thermal insulation performance, so that it can effectively prevent heat loss during incineration and improve incineration efficiency on the one hand, and protect surrounding components at the same time and reduce the impact of high temperature on surrounding components on the other hand. The specific structural form of the capture component 6 can be comprehensively selected according to the characteristics of sewage, the size of the layout space and the requirements of the specific treatment project. For example, it can be designed as a grid bar with rake teeth or hooks or as a screen, net or other structure. When the capture component 6 with a screen structure is selected, the screen The mesh number needs to be comprehensively selected based on the mesh number of the front coarse screen and the mesh number of the fine screen or the gap between the bars of the fine screen of the rear drum. That is, the aperture of the screen needs to be smaller than the aperture of the front coarse screen and larger than the aperture of the rear fine screen. The capture component 6 is directly fixed on the inner wall of the cleaning chamber 5, and its capture range covers at least one cross section of the cleaning chamber 5 to ensure that the capture component 6 can capture fibrous pollutants in all sewage flowing in the entire cross section of the sewage pipe 1, and avoid the situation where a part of the sewage is directly passed to the rear drum fine screen without being captured and treated.

[0028] The incineration component 7 is installed next to the capture component 6, and the fibrous pollutants such as hair captured on the capture component 6 are incinerated by flames and / or high-temperature hot air, so that they are burned or carbonized under the action of high temperature and high heat. The specific structural form of the incineration component 7 is not limited, and a finished burner can be directly used, such as a gas incineration device or an electric heating device. The specific installation method in the cleaning chamber 5 can also be optimized according to different structural forms and processing scenarios. For example, it can be set to a telescopic form and equipped with a mounting groove. When incineration is required, it is extended from the mounting groove and the capture component 6 is incinerated. After the treatment is completed, it is retracted into the mounting groove to prevent it from being adversely affected by sewage, etc. Of course, a protective structure such as an openable and closable protective shell can also be provided on the outside of the incineration component 7;

[0029] In order to avoid the problem that the components expand and contract due to the incineration of the incineration assembly 7 and the joints become loose or leak due to temperature stress, in some preferred embodiments, the sewage pipes 1 at the front and rear ends of the cleaning chamber 5 are provided with expansion joints 3. The front expansion joint 3 is installed on the sewage pipe 1 between the stop valve 2 and the cleaning chamber 5, and the rear expansion joint 3 is installed on the sewage pipe 1 between the cleaning chamber 5 and the check valve 11. The expansion joint 3 is preferably made of a heat-insulating ceramic-based composite material to compensate for thermal expansion and contraction. At the same time, the provision of the expansion joint 3 can also facilitate daily equipment maintenance.

[0030] In order to ensure that the fibrous pollutants attached to the capture component 6 can be fully burned, in some preferred embodiments, the cleaning chamber 5 can be further provided with a combustion-supporting component 10 for promoting the incineration of the fibrous pollutants. For example, the combustion-supporting component 10 can be designed as a one-way pneumatic valve. The one-way pneumatic valve is installed at the cleaning chamber 5 above the capture component 6 and is used to allow air or other combustion-supporting gas to be introduced when needed to enhance the combustion effect. Moreover, the one-way pneumatic valve can ensure that the gas can only flow in one direction to prevent sewage from flowing back.

[0031] After the fibrous pollutants are incinerated by the incineration component 7, flue gas is generated. This flue gas can be directly discharged from the cleaning chamber 5 along with the sewage that is subsequently introduced by way of being absorbed into the sewage. Of course, in order to avoid the problem of air pollution caused by the incomplete absorption of the flue gas and the escape into the air in the subsequent links, in some preferred embodiments, a flue gas recovery and treatment component 9 can be added to the cleaning chamber 5. The flue gas recovery and treatment component 9 sucks out the flue gas generated in the chamber and guides it through a pipeline to the subsequent treatment link for purification and harmless treatment, so as to reduce environmental pollution problems.

[0032] In order to prevent excessive accumulation of fibrous pollutants on the capture assembly 6 from affecting the normal flow of sewage in the section where the capture assembly 6 is located, the capture assembly 6 is promptly shut off, emptied, and incinerated when it needs to be incinerated. The incineration operation can be performed in a timed manner, for example, the time interval for the timed incineration treatment is determined according to the specific content of fibrous pollutants such as hair in the sewage.

[0033] Of course, considering that the content of various pollutants in sewage will fluctuate and be uneven, in order to overcome the problem of premature or untimely incineration caused by the timed treatment method due to this unevenness, in some preferred embodiments, it is also possible to adopt a method of detecting sewage fluidity through a sensor. For example, a pressure gauge 4 is set on the sewage pipe 1, and the pressure in the pipe is detected by the pressure gauge 4, so as to remind the operation and maintenance personnel to perform subsequent treatment, or cooperate with the central control system for automatic maintenance. In some preferred embodiments, the pressure gauge 4 is preferably set in pairs. The two sets of pressure gauges 4 are respectively installed on the sewage pipe 1 at both ends of the cleaning chamber 5. The pressure difference between the front and rear pipe sections of the cleaning chamber 5 is calculated by the front and rear sets of pressure gauges 4, so as to determine whether the capture component 6 is blocked by the agglomeration of fibrous pollutants. When the pressure difference between the two reaches the set value, the stop valve 2 can be controlled to cut off the water flow, and then the vent valve 8 can be opened to empty the sewage in the cleaning chamber 5. After that, the incineration component 7 can be opened to incinerate the fibrous pollutants such as hair attached to the capture component 6;

[0034] like Figure 2As shown, in order to avoid the problem of subsequent treatment equipment on the corresponding pipeline being shut down due to the interruption of flow of the stop valve 2 and to ensure the continuous operation of the subsequent sewage treatment process, in some preferred embodiments, it is appropriate to include two sets of parallel sewage pipes 1, and the two sets of sewage pipes 1 form a parallel double-pipe system, wherein one set of sewage pipes 1 is used as pipe A and the other set of sewage pipes 1 is used as pipe B. Of course, in order to improve the degree of automation of the system and reduce the cost of manual operation and maintenance, a central control system can also be added. The central control system is connected to the stop valve 2, the pressure gauge 4, the vent valve 8, the incineration component 7, the combustion-supporting component 10 and the flue gas recovery and treatment component 9. And it can control the opening and closing status of the stop valve 2, the vent valve 8, the incineration component 7, the combustion-supporting component 10 and the flue gas recovery and treatment component 9. The central control system controls the opening and closing of the stop valve 2 to make one of the sewage pipes 1 of the parallel double-pipe system in a flow state and the other sewage pipe 1 in a cut-off state. At this time, the pressure gauge 4 is respectively installed on the pipe A and the pipe B to monitor the water pressure difference in real time. The pressure gauge 4 is a high-precision, corrosion-resistant model to ensure accurate and reliable measurement. At the same time, it is equipped with a pressure sensor to convert the pressure signal into an electrical signal and transmit it to the central control system for data processing and judgment. That is, by collecting the pressure The real-time pressure of the pressure gauge 4 is obtained, and the pressure difference between the two groups of pressure gauges 4 before and after the cleaning chamber 5 at the sewage pipe 1 in the flow state is obtained, and then the pressure difference is used to judge whether subsequent actions are needed. Through the setting of the central control system, the device has an automatic switching function. When the pressure difference of pipe A (or pipe B) reaches the preset threshold due to the interception of fiber-like substances by the capture component 6, the system automatically closes the stop valve 2 at the water inlet end of pipe A (or pipe B) and opens the stop valve 2 of pipe B (or pipe A) at the same time, so that the water flow is switched to pipe B (or pipe A) for circulation, thereby ensuring the continuity of sewage treatment. At this time, the flow is cut off. The water in the cleaning bin 5 on the sewage pipe 1 is drained through the vent valve 8, and then the central control system starts the incineration component 7 to heat and incinerate the capture component 6, and burn the fibrous material trapped on the capture component 6 into slag. If necessary, the combustion-supporting component 10 can be turned on by the central control system to introduce combustion-supporting gas to enhance the combustion effect, and the flue gas recovery and treatment component 9 can be turned on by the central control system as needed to suck and harmlessly treat the flue gas generated by the incineration. The ash generated by the incineration naturally falls to the bottom of the cleaning bin 5. When the sewage pipe 1 that has been cut off is put into use again, the ash will be washed away with the water flow, and the ash will be self-drained without the need for manual cleaning.

[0035] Of course, in actual use, fibrous pollutants cannot be completely removed from sewage due to their own characteristics. Therefore, according to the blockage of the subsequent rotary drum fine screen mesh, multiple groups of devices described in the utility model can be connected in series on the same group of sewage pipes 1 to improve the cleaning effect of fibrous pollutants in the pretreatment stage.

[0036] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A device for collecting and cleaning fibrous pollutants in front of a rotary drum fine grid, characterized by: The invention comprises a stop valve (2), a cleaning chamber (5) and a check valve (11) which are sequentially arranged on a sewage pipe (1) along the flow direction of sewage. The two ends of the cleaning chamber (5) are respectively connected to the sewage pipe (1) at the water inlet and the water outlet. A vent valve (8) is arranged at the bottom of the chamber. A capture component (6) for capturing fibrous pollutants is installed inside the chamber. An incineration component (7) for incinerating the fibrous pollutants captured by the capture component (6) is also arranged inside the chamber.

2. The device for collecting and cleaning fibrous pollutants in front of a rotary drum fine screen according to claim 1, characterized in that: The sewage pipe (1) is also provided with a pressure gauge (4).

3. The device for collecting and cleaning fibrous pollutants in front of a rotary drum fine grid according to claim 2, characterized in that: The pressure gauges (4) are arranged in pairs, and the two sets of pressure gauges (4) arranged in pairs are respectively installed on the sewage pipes (1) at both ends of the cleaning chamber (5).

4. The device for collecting and cleaning fibrous pollutants in front of a rotary drum fine screen according to claim 1, characterized in that: The cleaning chamber (5) is also provided with a flue gas recovery and processing component (9) for collecting flue gas generated during the incineration of fibrous pollutants.

5. The device for collecting and cleaning fibrous pollutants in front of a rotary drum fine screen according to claim 1, characterized in that: The cleaning chamber (5) is also provided with a combustion-supporting component (10) for promoting the burning of fibrous pollutants.

6. The device for collecting and cleaning fibrous pollutants in front of a rotary drum fine screen according to claim 1, characterized in that: Expansion joints (3) are provided on the sewage pipes (1) at both the front and rear ends of the cleaning chamber (5).

7. A device for collecting and cleaning fibrous pollutants in front of a rotary drum fine screen according to any one of claims 1 to 6, characterized in that: The invention comprises two sets of parallel sewage pipes (1), wherein the two sets of sewage pipes (1) form a parallel double-pipe system, wherein one set of sewage pipes (1) is used as pipe A, and the other set of sewage pipes (1) is used as pipe B.

8. The device for collecting and cleaning fibrous pollutants in front of a rotary drum fine screen according to claim 7, characterized in that: The system further comprises a central control system, which is connected to the stop valve (2), the vent valve (8) and the incineration component (7) and is capable of controlling the opening and closing states of the stop valve (2), the vent valve (8) and the incineration component (7). The central control system controls the opening and closing of the stop valve (2) so that one of the sewage pipes (1) in the parallel double-pipe system is in a flow state and the other sewage pipe (1) is in a cut-off state.

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