Anaerobic dirt treatment device

Abstract

The utility model provides an anaerobic sludge treatment device, which relates to the technical field of sewage treatment devices and comprises an anaerobic jar, a sludge discharge port at the bottom end of the anaerobic jar is communicated to a sludge tank through a sludge discharge pipeline, and a crusher, a basket filter, a screw pump component and a flow meter are sequentially arranged on the sludge discharge pipeline between the anaerobic jar and the sludge tank along the sludge discharge direction; the crusher comprises a power assembly, a crushing cavity, a rotary blade and a flow guide plate, the crushing cavity is formed in the bottom of the power assembly, the rotary blade is arranged in the crushing cavity, the output end of the power assembly is connected with the rotary blade, and the flow guide plate is fixedly connected to the inner wall of the crushing cavity and the crushing gap between the flow guide plate and the rotary blade is 4-6 mm. The technical problems that a pump opening is blocked by dirt pieces and peculiar smell is generated in a collecting pool are solved, and the technical effects of smooth sludge discharge, reduction of abrasion of a rotor and a stator of the screw pump and no peculiar smell on site are achieved.

Description

Technical Field

[0001] This utility model relates to the technical field of wastewater treatment devices, and in particular to an anaerobic sludge treatment device. Background Technology

[0002] In wastewater treatment, anaerobic systems utilize anaerobic microorganisms to degrade organic matter. In an anaerobic environment, through the synergistic action of various anaerobic microorganisms, anaerobic systems gradually decompose complex organic matter in wastewater into simple inorganic substances and biogas, not only purifying the wastewater but also generating usable energy. This technology can be applied in industrial wastewater treatment, urban wastewater treatment plants, and other scenarios.

[0003] In existing anaerobic systems, the anaerobic tank is the treatment component. Wastewater is transported into the anaerobic tank via pipelines, where the anaerobic degradation of organic matter takes place. Anaerobic sludge is then discharged through a sludge discharge port at the bottom of the tank. During sludge discharge, current technology uses a sludge pump to extract the sludge from the discharge port and transport it to a sludge tank. To prevent sludge blockage, a collection tank equipped with a filter is installed near the anaerobic tank. The sludge is first filtered through the filter, and then a submersible pump in the collection tank transports the filtered sludge to the sludge tank.

[0004] However, existing technologies have the following problems:

[0005] 1. When the sludge pump directly discharges sludge, hard scale easily forms inside the anaerobic tank due to long-term operation. The scale flakes mix with the anaerobic sludge and block the pump port. Once blocked, manual dismantling and cleaning are required, and even a major overhaul of the anaerobic tank may be necessary in advance, which greatly increases the cost.

[0006] 2. Although setting up a filter in the collection tank can remove mud and dirt, it requires sufficient space and the collection tank will also produce odors. Utility Model Content

[0007] The purpose of this invention is to provide an anaerobic sludge treatment device to alleviate the technical problems of scale clogging pump inlets and odor generation in collection tanks in the prior art.

[0008] The present invention provides an anaerobic sludge treatment device, comprising: an anaerobic tank, wherein the bottom sludge discharge port of the anaerobic tank is connected to a sludge tank through a sludge discharge pipeline;

[0009] The sludge discharge pipeline between the anaerobic tank and the sludge pond is equipped with a crusher, basket filter, screw pump assembly and flow meter in sequence along the sludge discharge direction;

[0010] The crusher includes a power unit, a crushing chamber, rotating blades, and a guide plate. The crushing chamber is located at the bottom of the power unit, and the rotating blades are installed inside the crushing chamber. The output end of the power unit is connected to the rotating blades. The guide plate is fixed to the inner wall of the crushing chamber, and the crushing gap between the guide plate and the rotating blades is 4mm to 6mm.

[0011] Furthermore, the screw pump assembly includes a main screw pump and a backup screw pump, which are connected in parallel in the sludge discharge pipeline.

[0012] Furthermore, the mesh size of the basket filter is no greater than 6mm; the inlet end of the basket filter is detachably connected to the outlet end of the crusher via a flange.

[0013] Furthermore, the power assembly includes an explosion-proof motor and a reducer. The output shaft of the explosion-proof motor is connected to the input end of the reducer via a coupling, and the output end of the reducer is fixedly connected to the main shaft of the rotating blade.

[0014] Furthermore, the blade edge of the guide plate is coated with a wear-resistant coating, which is tungsten carbide.

[0015] Furthermore, the blade inclination angle of the guide plate is 30° to 60°.

[0016] Furthermore, control valves are installed at both ends of the crusher and the screw pump assembly on the sludge discharge pipeline.

[0017] Beneficial effects:

[0018] This utility model provides an anaerobic sludge treatment device, comprising: an anaerobic tank, the bottom sludge discharge port of the anaerobic tank being connected to a sludge tank via a sludge discharge pipeline, and a crusher, a basket filter, a screw pump assembly, and a flow meter sequentially arranged along the sludge discharge direction in the sludge discharge pipeline between the anaerobic tank and the sludge tank; the crusher includes a power assembly, a crushing chamber, rotating blades, and a guide plate, the bottom of the power assembly being provided with the crushing chamber, the rotating blades being arranged inside the crushing chamber, the output end of the power assembly being connected to the rotating blades, and the guide plate being fixed to the inner wall of the crushing chamber, with a crushing gap of 4mm to 6mm between the guide plate and the rotating blades.

[0019] By installing a crusher in the sludge discharge pipeline between the anaerobic tank and the sludge pond, hard scale layers in the anaerobic sludge can be broken up in real time. The crushing gap is 4mm to 6mm. Hard scale layers with a particle size larger than 5mm can be effectively broken up. Pre-crushing of the scale layer by the crusher prevents small scale flakes from entering the screw pump assembly, reducing wear on the screw pump stator, lowering the frequency of spare parts replacement, extending the service life of the screw pump and other sludge discharge equipment, reducing abnormal wear, and consequently reducing equipment maintenance costs and downtime. This optimizes the reliability of the sludge discharge system and lowers overall operating costs.

[0020] The basket filter further filters out sludge, and the crusher effectively avoids the odor problem caused by the sludge discharge method in the collection pool, reduces the risk of odor emission on site, and improves the environment. Attached Figure Description

[0021] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0022] Figure 1 A schematic diagram of the structure of the anaerobic sludge treatment device provided in the embodiment of this utility model;

[0023] Figure 2 A schematic diagram of the crusher in the anaerobic sludge treatment device provided in this embodiment of the utility model.

[0024] Icons: 1 - Anaerobic tank; 2 - Sludge tank; 3 - Crusher; 301 - Power unit; 302 - Crushing chamber; 303 - Rotary blades; 304 - Baffle plate; 305 - Explosion-proof motor; 306 - Reducer; 4 - Basket filter; 5 - Screw pump assembly; 501 - Main screw pump; 502 - Backup screw pump; 6 - Flow meter; 7 - Control valve. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0026] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0027] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0028] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0029] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0030] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0031] The following detailed description, in conjunction with the accompanying drawings, outlines some embodiments of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0032] This utility model provides an anaerobic sludge treatment device, including: an anaerobic tank 1, the bottom sludge discharge port of the anaerobic tank 1 being connected to a sludge tank 2 through a sludge discharge pipeline;

[0033] The sludge discharge pipeline between anaerobic tank 1 and sludge tank 2 is equipped with a crusher 3, a basket filter 4, a screw pump assembly 5 and a flow meter 6 in sequence along the sludge discharge direction;

[0034] The crusher 3 includes a power unit 301, a crushing chamber 302, rotating blades 303, and a guide plate 304. The crushing chamber 302 is located at the bottom of the power unit 301, and the rotating blades 303 are located inside the crushing chamber 302. The output end of the power unit 301 is connected to the rotating blades 303. The guide plate 304 is fixed to the inner wall of the crushing chamber 302, and the crushing gap between it and the rotating blades 303 is 4mm to 6mm.

[0035] Specifically, such as Figure 1 , Figure 2 As shown, the bottom sludge discharge port of anaerobic tank 1 is directly connected to the sludge discharge pipeline via a flange, forming the initial channel for sludge discharge. The sludge discharge pipeline is made of materials such as stainless steel or cast iron to ensure the stability of long-term contact with anaerobic sludge. Along the sludge discharge direction, a crusher 3, a basket filter 4, a screw pump assembly 5, and a flow meter 6 are sequentially installed on the sludge discharge pipeline; the inlet end of the crusher 3 is directly connected to the sludge discharge port pipeline of anaerobic tank 1 via a flange, ensuring that sludge containing hard scale layers first enters the crushing chamber 302 during the sludge discharge process; the sludge from the crushing chamber 302 is connected to the inlet end of the basket filter 4 through a pipeline, and the outlet end of the basket filter 4 is then connected to the inlet end of the screw pump assembly 5.

[0036] The hard scale layer is first broken up at the inlet of the screw pump assembly 5 by crusher 3 and basket filter 4, avoiding the blockage and wear caused by scale flakes directly entering the pump body in traditional processes, which leads to frequent replacement of the screw pump stator due to wear from small scale flakes. Even the very small amount of large particles that cannot be completely broken up by crusher 3 will be intercepted by basket filter 4, further protecting screw pump assembly 5. Compared with a collection tank, this invention avoids the fermentation of sludge in the collection tank, which produces odors, and improves the on-site environment by directly crushing and transporting it through a closed pipeline. At the same time, the crushed sludge particles are of uniform size, resulting in low operating resistance of screw pump assembly 5, reducing the frequency of manual pump disassembly and cleaning and the cost of spare parts replacement.

[0037] The power unit 301 in the crusher 3 is vertically mounted on the top of the crushing chamber 302. The motor output shaft is connected to the main shaft of the rotating blades 303 inside the crushing chamber 302 via a coupling or transmission shaft. The guide plate 304 is fixed to the inner wall of the crushing chamber 302, arranged in a ring or fan shape, forming a crushing gap of 4mm to 6mm with the rotating blades 303, preferably 5mm. The guide plate 304 is fixed to the inner wall of the chamber by welding, and the rotating blades 303 are fixed to the main shaft of the rotating blades 303 by keys or bushings, ensuring that the gap between the blade edge and the surface of the guide plate 304 remains constant during rotation. The 4mm to 6mm crushing gap ensures that the shearing force between the rotating blades 303 and the guide plate 304 crushes hard scale layers (calcium carbonate, calcium sulfate scale), while avoiding direct friction between the rotating blades 303 and the guide plate 304 due to excessively small gaps. Combined with the high strength of the 3Cr13 alloy steel blade material, this achieves efficient crushing and long-life operation.

[0038] In an embodiment of this utility model, the screw pump assembly 5 includes a main screw pump 501 and a backup screw pump 502, which are connected in parallel in the sludge discharge pipeline.

[0039] The mesh size of the basket filter 4 is no greater than 6mm; the inlet end of the basket filter 4 is detachably connected to the outlet end of the crusher 3 via a flange.

[0040] Control valves 7 are installed at both ends of the crusher 3 and the screw pump assembly 5 on the sludge discharge pipe.

[0041] Specifically, the main screw pump 501 and the backup screw pump 502 are connected in parallel in the sludge discharge pipeline. The sludge discharge pipeline leading out from the outlet of the basket filter 4 is divided into two paths: one path connects to the inlet of the main screw pump 501, and the other path connects to the inlet of the backup screw pump 502; the outlets of the main screw pump 501 and the backup screw pump 502 are combined into one pipeline, which continues to connect to the sludge tank 2.

[0042] A parallel design of main and standby screw pumps is adopted to improve the reliability of the sludge discharge system. During actual operation, the main screw pump 501 may malfunction after prolonged operation, such as damage to the mechanical seal or stator wear. When the main screw pump 501 fails, the standby screw pump 502 is quickly switched on to ensure uninterrupted sludge discharge and prevent equipment failure from disrupting sludge discharge from the anaerobic system, thus affecting the normal operation of the entire anaerobic treatment system.

[0043] The mesh size of the basket filter 4 is no greater than 6mm, matching the slag fineness (no greater than 6mm) of the crusher 3. After the crusher 3 breaks the hard scale layer into particles smaller than 6mm, the basket filter 4 further filters out any larger particles that may be present, ensuring that the sludge particles entering the screw pump assembly 5 meet the safe operation requirements of the screw pump.

[0044] On the sludge discharge pipeline, control valves 7 are installed at both ends of the crusher 3 and the screw pump assembly 5; the control valves 7 can effectively control the flow within the pipeline. The control valves 7 at the front end of the crusher 3 control the flow rate and pressure of the sludge entering the crusher 3. When the crusher 3 requires maintenance or malfunctions, these control valves 7 can be closed to cut off the flow of sludge into the crusher 3. The control valves 7 at both ends of the screw pump assembly 5 allow for the adjustment of flow rate and pressure during the switching between the main and standby screw pumps, ensuring a smooth sludge discharge process and improving reliability.

[0045] In an embodiment of this utility model, the power assembly 301 includes an explosion-proof motor 305 and a reducer 306. The output shaft of the explosion-proof motor 305 is connected to the input end of the reducer 306 via a coupling, and the output end of the reducer 306 is fixedly connected to the main shaft of the rotating blade 303.

[0046] The cutting edge of the guide plate 304 is coated with a wear-resistant coating, which is tungsten carbide.

[0047] The blade inclination angle of the 304 guide vane is 30° to 60°.

[0048] The power assembly 301 includes an explosion-proof motor 305 and a reducer 306. The output shaft of the explosion-proof motor 305 is connected to the input end of the reducer 306 via a coupling. The coupling serves to buffer and compensate for the relative displacement of the two shafts, reducing damage to the equipment caused by vibration and impact between the explosion-proof motor 305 and the reducer 306 due to installation errors or operation. The output end of the reducer 306 allows the output torque to directly drive the rotating blade 303 to rotate.

[0049] The explosion-proof motor 305 has a high rotational speed but relatively low torque. The speed can be reduced by a speed reducer, while the torque can be increased, so that the rotating blade 303 can obtain the hard scale layer in the anaerobic sludge through dynamic crushing.

[0050] A tungsten carbide wear-resistant coating is applied to the cutting edge of the guide plate 304 using thermal spraying or electroplating. During operation of the crusher 3, the cutting edge of the guide plate 304, in conjunction with the rotating blade 303, crushes the hard scale layer, subjecting the cutting edge to friction and impact. The tungsten carbide wear-resistant coating can improve the service life of the guide plate 304.

[0051] The blade inclination angle of the guide plate 304 is between 30° and 60°, preferably 40°. When the blade inclination angle is within this range, the hard scale layer can be subjected to shearing and compression between the rotating blade 303 and the guide plate 304, thereby improving the crushing efficiency.

[0052] Based on the above embodiments, the specific working process of the anaerobic sludge treatment device provided by this utility model is as follows:

[0053] Anaerobic sludge from anaerobic tank 1 flows into the sludge discharge pipe from the bottom discharge port and enters the crushing chamber 302 of crusher 3. An explosion-proof motor 305 drives a reducer 306, which in turn drives the main shaft of rotating blade 303 to rotate at high speed. The rotating blade 303, in conjunction with the guide plate 304, uses the gap to crush the hard scale layer into particles smaller than 6mm. The crushed anaerobic sludge enters a basket filter 4, where a filter screen no larger than 6mm traps impurities, ensuring that the sludge entering the screw pump assembly 5 meets the requirements. Under normal conditions, the main screw pump 501 operates, discharging the sludge into the sludge tank 2 after metering by the flow meter 6; if the main pump fails, it switches to the backup screw pump 502 to ensure uninterrupted sludge discharge.

[0054] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. An anaerobic sludge treatment device, comprising: An anaerobic tank (1), wherein the bottom sludge discharge port of the anaerobic tank (1) is connected to a sludge tank (2) via a sludge discharge pipe, characterized in that, The sludge discharge pipeline between the anaerobic tank (1) and the sludge tank (2) is provided with a crusher (3), a basket filter (4), a screw pump assembly (5) and a flow meter (6) in sequence along the sludge discharge direction; The crusher (3) includes a power assembly (301), a crushing chamber (302), rotating blades (303), and a guide plate (304). The crushing chamber (302) is located at the bottom of the power assembly (301). The rotating blades (303) are located inside the crushing chamber (302). The output end of the power assembly (301) is connected to the rotating blades (303). The guide plate (304) is fixed to the inner wall of the crushing chamber (302). The crushing gap between the guide plate (304) and the rotating blades (303) is 4mm to 6mm.

2. The anaerobic sludge treatment device according to claim 1, characterized in that, The screw pump assembly (5) includes a main screw pump (501) and a backup screw pump (502), which are connected in parallel in the sludge discharge pipeline.

3. The anaerobic sludge treatment device according to claim 1, characterized in that, The mesh size of the basket filter (4) is no greater than 6mm; the inlet end of the basket filter (4) is detachably connected to the outlet end of the crusher (3) via a flange.

4. The anaerobic sludge treatment device according to claim 1, characterized in that, The power assembly (301) includes an explosion-proof motor (305) and a reducer (306). The output shaft of the explosion-proof motor (305) is connected to the input end of the reducer (306) via a coupling. The output end of the reducer (306) is fixedly connected to the main shaft of the rotating blade (303).

5. The anaerobic sludge treatment device according to claim 4, characterized in that, The cutting edge of the guide plate (304) is coated with a wear-resistant coating, which is tungsten carbide.

6. The anaerobic sludge treatment device according to claim 5, characterized in that, The blade inclination angle of the guide plate (304) is 30° to 60°.

7. The anaerobic sludge treatment device according to claim 1, characterized in that, Control valves (7) are provided at the front end of the crusher (3) and at both ends of the screw pump assembly (5) on the sludge discharge pipe.

Images