Variable-pipe-diameter sludge collection system provided with sewage disposal module

Abstract

The invention discloses a variable-pipe-diameter sludge collection system provided with a sewage disposal module. The variable-pipe-diameter sludge collection system comprises a variable-pipe-diameter sludge collection pipeline used for collecting and discharging sludge in a pool and a sludge collection hole sewage disposal device used for cleaning impurities in sludge collection holes. The variable-pipe-diameter mud collecting pipeline comprises a main mud collecting area, a mud collecting main pipe and variable-pipe-diameter mud collecting branch pipes. According to the invention, the pipe-diameter-variable mud collection pipeline is adopted, and the mud collection amount and the mud conveying on-way length of each section of pipeline are determined according to the position close to or far away from the mud collection main pipe, so that the problem of non-uniform mud collection by adopting an equal-diameter mud collection pipe when the mud collection length is too long can be avoided to the greatest extent; in addition, the matched sewage disposal modules are located below the sludge collection pipeline and keep a certain distance from the sludge collection pipeline, the number of the sewage disposal modules corresponds to that of the sludge collection holes, the sewage disposal modules are located under the sludge collection holes, and sewage disposal can be conducted on the sludge collection holes regularly or when needed.

Description

Technical Field

[0001] The present invention belongs to the technical field of sewage treatment, and is suitable for the design and cleaning of fixed sludge collection pipelines with a long length along the way, and is particularly suitable for working conditions requiring intermittent sludge collection, such as circular hydrolysis acidification reactors with a large diameter, and specifically relates to a variable pipe diameter sludge collection system equipped with a cleaning module. Background Art

[0002] With the increasing amount of difficult-to-degrade organic wastewater and high-concentration industrial wastewater, the hydrolysis acidification process with better pretreatment effect is being used more and more.

[0003] The hydrolysis acidification process is often used for the pretreatment of difficult-to-degrade organic wastewater. It can convert large-molecule organic matter into small-molecule substances, and difficult-to-degrade organic matter into easily degradable substances, thereby improving the biodegradability of the wastewater and reducing the difficulty of subsequent biochemical treatment. It is widely used in the treatment of difficult-to-degrade industrial wastewater such as pharmaceutical wastewater, papermaking wastewater, printing and dyeing wastewater, and garbage leachate, as well as comprehensive sewage with poor biodegradability.

[0004] Compared with the rectangular reaction tank with civil engineering structure, the equipment-based circular reactor has the advantages of short construction time, low construction difficulty, moderate footprint, good corrosion resistance, and the ability to tap the height potential by increasing the aspect ratio. It is particularly suitable for the upgrading and transformation of existing sewage treatment plants and the construction of new sewage treatment plants where land is particularly tight.

[0005] The common sludge collection method of the hydrolysis acidification reactor generally uses one or several equal-diameter collecting pipes to collect the sludge, and then connects to the sludge collecting main pipe at one end for discharge. When the sludge collecting length is short, equal-diameter sludge collecting can ensure a certain uniformity, but if the sludge collecting length is very long (such as more than 10 meters), if equal-diameter pipes are still used, the sludge velocity in the pipe at the starting end is low and easy to deposit, and the flow velocity in the pipe at the collecting end is high. The sludge settled at the bottom of the pool cannot be discharged evenly, especially the sludge near the starting end cannot be discharged in time, which is easy to cause sludge accumulation. Long-term retention in the pool may produce biogas and cause safety accidents. Moreover, the sludge collecting pipelines installed inside the reactor are all fixed pipelines, and most of them are intermittent sludge collection. The sludge collecting holes that are too small are very easy to be blocked, and it is difficult to clear them, which seriously affects the normal collection and discharge of sludge in the reactor.

[0006] At the same time, hydrolysis acidification reactors are often used in pretreatment units. At this time, the influent still contains a certain amount of suspended matter and other impurities, making the generated sludge composition more complex, and may contain inorganic sand, suspended matter or other impurities that are easy to block the mud collection holes. Under the condition of intermittent operation of the reactor mud collection pipeline, once the sludge is blocked, it will be more serious. The blockage of the mud collection hole causes poor and uneven mud collection and difficulty in clearing, which is an important problem that needs to be addressed in the smooth operation of the hydrolysis acidification reactor. Summary of the invention

[0007] In view of the technical problems mentioned in the above background technology that the sludge collection in the hydrolysis acidification reactor is uneven along a long length and the sludge collection holes are easily blocked and difficult to clear, the purpose of the present invention is to provide a variable pipe diameter sludge collection system equipped with a sewage cleaning module.

[0008] To achieve the above purpose, the technical solution provided by the present invention is as follows:

[0009] A variable diameter mud collection system equipped with a pollution cleaning module comprises a variable diameter mud collection pipeline for collecting and discharging mud in a pool and a mud collection hole pollution cleaning device for cleaning debris in the mud collection hole.

[0010] Among them, the variable diameter mud collecting pipeline includes: a total mud collecting area, a mud collecting main pipe and a variable diameter mud collecting branch pipe. The total mud collecting area is located at the center of a circular hydrolysis acidification reactor or an anaerobic reactor, and 4 variable diameter mud collecting branch pipes are evenly arranged along the surrounding area. The variable diameter mud collecting branch pipes are connected to the total mud collecting area through a flange, and the lower end of the total mud collecting area is connected to the mud collecting main pipe.

[0011] The variable diameter mud collecting branch pipe has a diameter that gradually decreases from close to the total mud collecting area to far away from the total mud collecting area and changes its diameter twice or three times.

[0012] Among them, when the variable diameter mud collecting branch pipe is greater than 7m, the diameter is changed twice; when the variable diameter mud collecting branch pipe is greater than 10m, the diameter is changed three times.

[0013] Among them, the variable diameter mud collecting branch pipe includes a segmented mud collecting branch pipe section I, a variable diameter pipe section I, a segmented mud collecting branch pipe section II, a variable diameter pipe section II, and a segmented mud collecting branch pipe section III which are connected in sequence; the radii of the segmented mud collecting branch pipe section I, the segmented mud collecting branch pipe section II, and the segmented mud collecting branch pipe section III decrease in sequence, and mud collecting holes are provided on the lower end surfaces.

[0014] The mud hole cleaning device is located below the variable diameter mud collecting branch pipe and is spaced a distance therefrom, and the mud hole cleaning device includes mud hole cleaning modules whose number and positions are consistent with the mud collecting holes.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The present invention adopts a variable diameter mud collection pipeline, and determines the mud collection amount and mud delivery length of each section of the pipeline according to the position close to or far from the mud collection main pipe, which can avoid the problem of uneven mud collection when the mud collection length is too long by using a mud collection pipe of equal diameter to the greatest extent; in addition, a matching cleaning module is located below the mud collection pipeline and keeps a certain distance from it. The number of cleaning modules corresponds to the number of mud collection holes, and the position is located directly below the mud collection holes, so that the mud collection holes can be cleaned regularly or when needed. This configuration can solve the problem that the mud collection holes of fixed mud collection pipelines cannot be cleared once they are blocked. It is simple and practical, and requires little maintenance.

[0017] Through the above two innovations, uniform sludge collection can be achieved when the sludge collection length of the fixed sludge collection pipeline is long, reducing the tendency of clogging; and once clogging occurs, the cleaning module can be used to clear it in time, realizing the concept of "prevention first, prevention and control combined" for clogging, making the fixed sludge collection method more practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of a top view of a variable diameter mud collection system equipped with a cleaning module provided in an embodiment of the present application;

[0019] Figure 2 A first schematic diagram of the side view structure of a variable diameter pipe mud collection system equipped with a sewage cleaning module provided in an embodiment of the present application;

[0020] Figure 3 A second schematic diagram of the side view structure of the variable diameter pipe mud collection system equipped with a sewage cleaning module provided in an embodiment of the present application;

[0021] Figure 4 A schematic diagram of the structure of a mud hole cleaning device provided in an embodiment of the present application;

[0022] Figure 5 A first schematic diagram of the structure of a mud hole cleaning module provided in an embodiment of the present application;

[0023] Figure 6 A second schematic diagram of the structure of the mud hole cleaning module provided in an embodiment of the present application;

[0024] Figure 7 A schematic diagram of the structure of the gland provided in the embodiment of the present application;

[0025] Figure 8 A schematic diagram of the installation structure of the nut provided in an embodiment of the present application;

[0026] In the figure, segmented mud collecting branch pipe section I 1, mud collecting hole 2, reducer pipe section I 3, segmented mud collecting branch pipe section II 4, reducer pipe section II 5, segmented mud collecting branch pipe section III 6, total mud collecting area 7, mud collecting main pipe 8, reactor bottom 101, reactor pool wall 102, reactor top 103, reactor center 104, operating mechanism 91, operating rod 92, operating rod support seat 93, double universal joint 94, horizontal connecting rod 95, mud collecting hole cleaning module 96, base 97, gear 98, gear shaft 99, nut 910, bearing seat 911, guide plate 912, nut rack 913, rack 914, lifting rod 915, pressure cover 916, rotating sleeve 917, and brush head 918. DETAILED DESCRIPTION

[0027] 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.

[0028] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0029] In the description of this patent, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense, for example, it can be fixedly connected, set, or detachably connected, set, or integrally connected, set, and can refer to direct connection or indirect connection. For ordinary technicians in this field, the specific meanings of the above terms in this patent can be understood according to specific circumstances.

[0030] like Figure 1-Figure 8As shown in the figure, segmented mud collecting branch pipe section I 1, mud collecting hole 2, reducer pipe section I 3, segmented mud collecting branch pipe section II 4, reducer pipe section II 5, segmented mud collecting branch pipe section III 6, total mud collecting area 7, mud collecting main pipe 8, reactor bottom 101, reactor pool wall 102, reactor top 103, reactor center 104, operating mechanism 91, operating rod 92, operating rod support seat 93, double universal joint 94, horizontal connecting rod 95, mud collecting hole cleaning module 96, base 97, gear 98, gear shaft 99, nut 910, bearing seat 911, guide plate 912, nut rack 913, rack 914, lifting rod 915, pressure cover 916, rotating sleeve 917, brush head 918.

[0031] This embodiment provides a variable pipe diameter mud collection system configured with a pollution cleaning module, including the following:

[0032] (1) Variable diameter mud collection pipeline: According to the amount of mud collected and the length of mud transport, combined with the hydraulic calculation results, the diameter of the entire mud collection pipeline is changed two or three times to achieve uniform collection and smooth discharge of sludge in the pool;

[0033] (2) Mud collection hole cleaning device: When the mud collection hole is blocked by debris, resulting in poor mud collection and uneven local mud collection, this device can be used to quickly clean the dirt in the hole; it can also be started regularly for maintenance to reduce the tendency of the hole to be blocked so that the sludge can be collected and discharged in time.

[0034] Specifically, the variable diameter mud collecting pipeline includes the following: segmented mud collecting branch pipe section I 1; mud collecting hole 2; variable diameter pipe section I 3; segmented mud collecting branch pipe section II 4; variable diameter pipe section II 5; segmented mud collecting branch pipe section III 6; total mud collecting area 7; mud collecting main pipe 8. The total mud collecting area 7 is located at the center of the circular hydrolysis acidification reactor or anaerobic reactor, and 4 variable diameter mud collecting branch pipes with variable pipe diameters and variable hole spacings are arranged along the surrounding area, which are connected to the total mud collecting area 7 through flanges.

[0035] The mud collection path of each variable diameter mud collection branch pipe is from the pool wall side to the pool center side. The closer to the center side, the greater the mud collection amount. Therefore, the diameter size of each segmented mud collection pipe gradually increases from the pool wall side to the center side to accommodate the smooth discharge of the continuously accumulated mud.

[0036] The number of sections of the variable diameter mud collecting branch pipe is related to its length along the way. The longer the length, the longer the mud collecting process, and the more likely it is that the mud will be unevenly transported when the same pipe diameter is used. The length of the variable diameter mud collecting branch pipe is related to the diameter of the reactor pool, and then to the treatment scale. Therefore, the reactor diameter is determined according to different treatment scales, and then the length of the variable diameter mud collecting branch pipe is determined. When the length of the variable diameter mud collecting branch pipe is >7m, a two-section reducer is used; when the length of the variable diameter mud collecting branch pipe is >10m, a three-section reducer is used.

[0037] The mud hole cleaning device is located below the variable diameter mud collecting branch pipe and is spaced a distance therefrom. The mud hole cleaning device is designed with cleaning modules, the number of which is consistent with the number of mud collecting holes, and the positions of which are also consistent with the positions of the mud collecting holes.

[0038] The mud hole cleaning device is composed of the following parts connected in sequence: an operating mechanism 91, an operating rod 92, an operating vertical rod support seat 93 and a double universal joint 94, a horizontal connecting rod 95, and a mud hole cleaning module 96.

[0039] The working process is as follows: the hand wheel of the rotating operating mechanism 91 drives the gear 98 on the mud collection hole cleaning module 96 to rotate through the operating rod 92 and the double universal joints. The gear 98 drives the rack 914 to move up and down in the base 97. When the lifting rod 915 moves up and down, the rotating sleeve 917 rotates under the action of the fixed nut 910, driving the brush head 918 to rotate while rising or falling, which is beneficial to effectively clear the opening of the mud collection hole.

[0040] The key part of the mud hole cleaning device is the mud hole cleaning module 6. Through the design of the mechanical structure, it can move up to the predetermined position when cleaning and return to the original position when not cleaning. The specific mechanical structure of the cleaning module includes: a base 97, which provides bottom support for the cleaning module; a gear 98, which drives the lifting rod to move up and down during the rotation; a gear shaft 99, which transmits the force of the horizontal connecting rod to the gear 98; a horizontal connecting rod 95; a bearing seat 911; a guide plate 912, which plays a guiding role and guides the rotational force into an up and down force; a nut frame 913; a rack 914; a lifting rod 915; a pressure cover 916; a rotating sleeve 917; and a brush head 918, which can move up and down and extend into the mud hole for cleaning.

[0041] The specific working process is as follows: the operating mechanism 91 located on the operating platform at the top of the reactor is connected to the operating rod 92 in the vertical direction; the double universal joint 94 is connected to the operating rod 92 and the horizontal connecting rod 95 at the same time, which can turn the vertical force of the operating rod to the horizontal direction. The horizontal connecting rod 95 is connected to the gear shaft 99, and the gear shaft 99 is connected to the gear 98, so as to transmit the force of the operating mechanism to the gear. There are gear shafts 99 on both sides of each gear 98, and the gear shaft 99 is fixed by a bearing seat 911. The gear 98 is meshed with the rack 914, and the rack 914 is connected and fixed to the lifting rod 915, and the lifting rod 915 can move up and down in the base 97; the lifting rod 915 is connected and fixed to the rack 914 in the side direction, and two symmetrical grooves are formed with the back of the rack through the boss structure, which cooperates with the guide plate 912 on the base, so that the lifting rod 915 can only move up and down. A pressure cover is set at the upper end of the lifting rod 915, and the rotating sleeve 917 is restricted by the guide column 912 and the pressure cover 916, so that the rotating sleeve 917 can only rotate. The rotating sleeve 917 is hollow and has threads on the outside, which match the internal threads of the nut. The nut 910 is arranged at the upper end of the nut frame 913. A brush head 918 is arranged on the top of the rotating sleeve 917, and an annular groove is arranged on the bottom. It is connected to the lifting rod 915 through a gland 916 and can rotate. Among them, the gland 916 is stuck in the annular groove of the rotating sleeve 917, and the rotating sleeve can rotate. The gland is fixedly connected to the lifting rod 915 to ensure that the rotating sleeve does not separate from the lifting rod when the lifting rod moves up and down. When the lifting rod moves up and down, the rotating sleeve rotates under the action of the threads, thereby driving the brush head to rotate.

[0042] Through the above mechanical structure design, the upward movement and resetting of the cleaning module can be realized, so that the mud collecting hole can be cleaned when necessary, and the cleaning module can be reset to the initial position after the cleaning is completed.

[0043] The number of the cleaning modules is the same as the number of the mud collecting holes, and the positions correspond one to one. In order not to affect the normal mud collecting function, they are located at a certain interval under the mud collecting holes.

[0044] It should be noted that the diagram in this example is only used to illustrate its working principle, and the position and specific quantity of each part may vary according to actual needs.

[0045] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A variable diameter mud collection system equipped with a cleaning module, characterized in that: It includes a variable diameter mud collecting pipeline for collecting and discharging mud in a pool and a mud collecting hole cleaning device for cleaning debris in the mud collecting hole.

2. A variable diameter pipe mud collection system equipped with a sewage cleaning module according to claim 1, characterized in that: The variable diameter mud collecting pipeline comprises: a total mud collecting area (7), a mud collecting main pipe (8) and variable diameter mud collecting branch pipes. The total mud collecting area (7) is located at the center of a circular hydrolysis acidification reactor or an anaerobic reactor, and four variable diameter mud collecting branch pipes are evenly arranged along the surrounding area. The variable diameter mud collecting branch pipes are connected to the total mud collecting area (7) via flanges, and the lower end of the total mud collecting area (7) is connected to the mud collecting main pipe (8).

3. A variable diameter pipe mud collection system equipped with a cleaning module according to claim 2, characterized in that: The variable diameter mud collecting branch pipe has a diameter that gradually decreases from close to the total mud collecting area (7) to far away from the total mud collecting area (7) and changes diameter twice or three times.

4. A variable pipe diameter mud collection system equipped with a sewage cleaning module according to claim 3, characterized in that: When the variable diameter mud collecting branch pipe is greater than 7m, the diameter is changed twice; when the variable diameter mud collecting branch pipe is greater than 10m, the diameter is changed three times.

5. The variable pipe diameter mud collection system equipped with a sewage cleaning module according to claim 3, characterized in that: The variable diameter mud collecting branch pipe comprises a segmented mud collecting branch pipe section I (1), a variable diameter pipe section I (3), a segmented mud collecting branch pipe section II (4), a variable diameter pipe section II (5), and a segmented mud collecting branch pipe section III (6) which are connected in sequence; the radii of the segmented mud collecting branch pipe section I (1), the segmented mud collecting branch pipe section II (4), and the segmented mud collecting branch pipe section III (6) decrease in sequence, and the lower end surfaces are all provided with mud collecting holes (2).

6. A variable diameter pipe mud collection system equipped with a cleaning module according to claim 5, characterized in that: The mud hole cleaning device is located below the variable diameter mud hole branch pipe and is spaced a distance therefrom, and the mud hole cleaning device comprises mud hole cleaning modules whose number and positions are consistent with those of the mud holes (2).

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