A kind of black film methane tank mud scraping and residue discharging device

Abstract

This utility model discloses a sludge scraping and slag removal device for a black film biogas digester, belonging to the field of biogas digester technology. It includes: a sludge discharge pipeline system located inside the black film digester; the sludge discharge pipeline system includes a main sludge discharge pipe, with sludge discharge branch pipes connected to both sides of the main sludge discharge pipe, and a fixed cylinder installed at the end of each branch pipe away from the main sludge discharge pipe. This utility model uses a pump installed on the sludge discharge pipeline system to generate suction on the sludge, causing the sludge to be discharged upwards from the bottom of the digester along the branch pipes and the main sludge discharge pipe. When the sludge passes through the inside of the fixed cylinder, it pushes the impeller plate on the connecting shaft, which in turn drives the mounting base and flexible scraper rod to rotate. This facilitates light scraping of the sludge around the inlet of the branch pipe, loosening the accumulated sludge and making it easier for the sludge to collapse under gravity. Simultaneously, a backwashing system uses water pressure to flush the sludge at the bottom of the digester, reducing the integrity of the sludge, increasing its fluidity in the wastewater, and making it easier to discharge.

Description

Technical Field

[0001] This utility model relates to the field of biogas digester technology, specifically to a sludge scraping and slag removal device for a black film biogas digester. Background Technology

[0002] The black membrane biogas digester is an ultra-large anaerobic wastewater reactor that uses black HDPE geomembrane material to seal the bottom and top of the oxidation pond into one unit, integrating fermentation and gas storage functions. It produces biogas, mainly methane, by anaerobic microorganisms metabolizing and degrading organic substrates (such as livestock manure and organic wastewater), thus achieving waste treatment and energy recovery.

[0003] Black membrane biogas digesters are currently mostly used in large-scale livestock farms to ferment livestock manure and produce biogas. Black membrane biogas digesters generally have a large bottom area and often employ a gravity-based sludge removal method by laying sludge discharge pipes at the bottom. However, the sludge often remains stagnant at the bottom, making it difficult to completely remove the sludge by gravity alone. This leads to a large accumulation of sludge at the bottom, affecting the normal operation of the biogas digester, reducing and destabilizing wastewater treatment efficiency, and ultimately reducing the effective volume of the biogas digester and its manure storage capacity. Utility Model Content

[0004] The purpose of this utility model is to provide a sludge scraping and slag removal device for a black film biogas digester. The device connects a sludge discharge branch pipe to a main sludge discharge pipe, and uses a pump to extract the sludge, which is then discharged from the black film digester along the branch pipe and main pipe. As the sludge passes through the fixed cylinder, an automatic drive component rotates the mounting base at the top. A flexible scraper then scrapes and loosens the sludge at the bottom of the digester, improving its fluidity. Simultaneously, a backwashing system is installed, using wastewater from the upper layer of the black film digester to flush the sludge at the bottom, reducing sludge particle size, increasing sludge fluidity, and decreasing adhesion between sludge particles. This allows the sludge to flow better under gravity, facilitating sludge discharge and solving the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a sludge scraping and slag removal device for a black film biogas digester, comprising:

[0006] The sludge discharge pipeline system located inside the black membrane tank;

[0007] The sludge discharge pipeline system includes a sludge discharge main pipe, sludge discharge branch pipes connected to both sides of the sludge discharge main pipe, a fixed cylinder provided at the end of the sludge discharge branch pipe away from the sludge discharge main pipe, the sludge discharge branch pipe connected to the fixed cylinder, an installation seat rotatably provided at the top of the fixed cylinder, flexible scraper rods for loosening sludge fixed around the installation seat, and an automatic drive component for rotating the installation seat provided inside the fixed cylinder.

[0008] One end of the sludge discharge main pipe extends to the outside of the black membrane tank and is connected to a pump body for sludge extraction, while the other end of the sludge discharge main pipe is connected to a backwashing system.

[0009] Preferably, the backflushing system includes a connecting pipe connected to the sludge discharge main pipe, with a water pump connected to the end of the connecting pipe away from the sludge discharge main pipe, and an inlet pipe rotatably connected to the inlet of the water pump.

[0010] Preferably, the automatic drive assembly includes a connecting shaft fixed to the bottom of the mounting base, the connecting shaft being rotatably connected to the inside of the fixed cylinder via a bearing, and an impeller plate being fixed to the surface of the connecting shaft.

[0011] Preferably, the flexible scraper includes a fixing rod fixed to the outside of the mounting base, and the bottom of the fixing rod is fixed with an elastic rubber plate.

[0012] Preferably, a control valve is provided on both the sludge discharge main pipe and the connecting pipe, and a filter screen is provided at the inlet of the water inlet pipe.

[0013] Preferably, the water inlet pipe is a flexible water inlet hose, and a float is installed on the outer side of the end of the water inlet pipe away from the water pump, with the water inlet pipe located at the lower end of the float.

[0014] Preferably, a connecting seat is fixed on the outside of the connection between the sludge discharge main pipe and the sludge discharge branch pipe, and the bottom of the connecting seat and the fixing cylinder are bonded to the bottom of the black film pool.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. This utility model uses a pump body installed on the sludge discharge pipeline system to generate suction force on the sludge, causing the sludge to be discharged from the bottom of the pool upwards along the sludge discharge branch pipe and the sludge discharge main pipe. When the sludge passes through the inside of the fixed cylinder, it pushes the impeller plate on the connecting shaft, and the connecting shaft drives the mounting base and the flexible scraper rod to rotate, which facilitates the light scraping of the sludge around the inlet of the sludge discharge branch pipe, making it easier to loosen the accumulated sludge and make it easier for the sludge to collapse under gravity. At the same time, the backwashing system uses water pressure to flush the sludge at the bottom of the pool, reducing the integrity of the sludge, increasing the fluidity of the sludge in the sewage, and making the sludge easier to discharge.

[0017] 2. This utility model uses a float to adjust the position of the inlet end of the water inlet pipe, and automatically adjusts the position of the inlet of the water inlet pipe according to the liquid level in the pool. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0019] Figure 2 This is a partial three-dimensional structural schematic diagram of the present invention;

[0020] Figure 3 This is a top view of the three-dimensional structure of the fixed cylinder of this utility model;

[0021] Figure 4 This is a three-dimensional structural diagram of the backwashing system of this utility model.

[0022] The following are the labels in the diagram: 1. Main sludge discharge pipe; 2. Branch sludge discharge pipe; 3. Fixed cylinder; 4. Mounting base; 5. Flexible scraper bar; 51. Fixed rod; 52. Rubber plate; 6. Automatic drive assembly; 61. Connecting shaft; 62. Impeller plate; 7. Backflushing system; 71. Connecting pipe; 72. Water pump; 73. Inlet pipe; 8. Control valve; 9. Float; 10. Connecting base. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] This utility model provides, for example Figures 1-4 The sludge scraping and slag removal device for a black film biogas digester shown includes:

[0025] The sludge discharge pipeline system located inside the black membrane tank;

[0026] The sludge discharge pipeline system includes a sludge discharge main pipe 1, sludge discharge branch pipes 2 connected to both sides of the sludge discharge main pipe 1, a fixed cylinder 3 provided at the end of the sludge discharge branch pipe 2 away from the sludge discharge main pipe 1, the sludge discharge branch pipe 2 and the fixed cylinder 3 are connected, an installation seat 4 is rotatably provided on the top of the fixed cylinder 3, a flexible scraper 5 for loosening sludge is fixed around the installation seat 4, and an automatic drive component 6 for rotating the installation seat 4 is provided inside the fixed cylinder 3.

[0027] One end of the sludge discharge main pipe 1 extends to the outside of the black membrane tank and is connected to a pump body for sludge extraction, while the other end of the sludge discharge main pipe 1 is connected to a backwash system 7.

[0028] The pumps installed on the sludge discharge pipeline system generate suction to discharge the sludge from the bottom of the pool upwards along the sludge discharge branch pipe 2 and the main sludge discharge pipe 1. When the sludge passes inside the fixed cylinder 3, it pushes the impeller plate 62 on the connecting shaft 61. The connecting shaft 61 drives the mounting base 4 and the flexible scraper rod 5 to rotate, which facilitates the light scraping of the sludge around the inlet of the sludge discharge branch pipe 2, loosening the accumulated sludge and making it easier for the sludge to collapse under gravity. At the same time, the backwash system 7 uses water pressure to flush the sludge at the bottom of the pool, reducing the integrity of the sludge, increasing the fluidity of the sludge in the sewage, and making the sludge easier to discharge.

[0029] Among them, such as Figure 4 As shown:

[0030] The backwash system 7 includes a connecting pipe 71 connected to the sludge discharge main pipe 1. The end of the connecting pipe 71 away from the sludge discharge main pipe 1 is connected to a water pump 72. The inlet of the water pump 72 is rotatably connected to an inlet pipe 73. By connecting the connecting pipe 71 to the sludge discharge main pipe 1, the water pump 72 introduces the upper layer of sewage into the sludge discharge main pipe 1 through the connecting pipe 71, and then sprays it outward through the sludge discharge branch pipe 2. The water pressure is used to flush the sludge and reduce the stickiness of the sludge caused by sedimentation.

[0031] Furthermore, such as Figure 3 As shown:

[0032] The automatic drive assembly 6 includes a connecting shaft 61 fixed to the bottom of the mounting base 4. The connecting shaft 61 is rotatably connected to the inside of the fixed cylinder 3 via a bearing. An impeller plate 62 is fixed to the surface of the connecting shaft 61. When the sludge discharge branch pipe 2 is connected to the fixed cylinder 3, it is set along the tangential direction of the inner wall of the fixed cylinder 3. The fixed cylinder 3 and the mounting base 4 are rotatably connected via the connecting shaft 61. The flow of sludge drives the impeller plate 62 to rotate, which in turn drives the mounting base 4 and the flexible scraper rod 5 to rotate, scraping the surrounding sludge and loosening it.

[0033] Preferred, such as Figure 2-3 As shown:

[0034] The flexible scraper rod 5 includes a fixed rod 51 fixed to the outside of the mounting base 4. The bottom of the fixed rod 51 is fixed with an elastic rubber plate 52. By setting the structure of the flexible scraper rod 5, the loosening effect of sludge is ensured. The fixed rod 51 increases rigidity, so that the rubber plate 52 is in close contact with the sludge accumulated at the bottom of the pool. At the same time, the rubber plate 52 is elastic and flexible, which facilitates contact with sludge of different thicknesses. At the same time, when the rubber plate 52 passes over the sludge discharge branch pipe 2, it can effectively protect the rubber plate 52 and the sludge discharge branch pipe 2, and prevent rigid contact from causing severe wear.

[0035] It is worth noting that, such as Figure 1 and Figure 4 As shown:

[0036] Control valves 8 are installed on both the sludge discharge main pipe 1 and the connecting pipe 71, and a filter screen is installed at the inlet of the water inlet pipe 73. By installing control valves 8 on the sludge discharge main pipe 1 and the connecting pipe 71, the sludge discharge pipeline system and the backwash system 7 can be operated independently. At the same time, a filter screen is installed at the inlet of the water inlet pipe 73 to filter impurities in the sewage and avoid interfering with the normal operation of the water pump 72.

[0037] In a further preferred embodiment, such as Figure 4 As shown:

[0038] The inlet pipe 73 is a flexible inlet hose. A float 9 is installed on the outer side of the end of the inlet pipe 73 away from the water pump 72, and the inlet pipe 73 is located at the lower end of the float 9. By limiting the inlet pipe 73, it is ensured that when the liquid level in the black film tank rises and falls, the inlet pipe 73 can adjust its curvature by its own flexibility. At the same time, the float 9 adjusts the position of the inlet end of the inlet pipe 73. According to the liquid level in the tank, the position of the inlet of the inlet pipe 73 is automatically adjusted, and the inlet of the inlet pipe 73 is always located at the lower end of the float 9, which facilitates the suction of sewage.

[0039] In addition, such as Figure 1 As shown:

[0040] A connecting seat 10 is fixed on the outside of the connection between the sludge discharge main pipe 1 and the sludge discharge branch pipe 2. The bottom of the connecting seat 10 and the fixing cylinder 3 are bonded to the bottom of the black film tank. The connecting seat 10 supports the sludge discharge main pipe 1 and the sludge discharge branch pipe 2. At the same time, the connecting seat 10 and the fixing cylinder 3 are connected to the black film tank by welding to ensure the stability of the sludge discharge pipeline system and the backwash system 7, so as to avoid friction with the black film tank and cause wear to the black film tank.

[0041] In practical use, close the control valve 8 on the connecting pipe 71, open the control valve 8 on the sludge discharge main pipe 1, and then start the pump. Utilizing the pressure difference generated by the pump, the sludge flows outward along the sludge discharge branch pipe 2 and the sludge discharge main pipe 1. When the sludge flows through the fixed cylinder 3, it enters tangentially along the inner wall of the fixed cylinder 3 from the sludge discharge branch pipe 2, contacting the impeller plate 62 on one side of the fixed cylinder 3. The sludge pushes the impeller plate 62 to rotate along the connecting shaft 61. Subsequently, the connecting shaft 61 drives the mounting base 4 to rotate, causing the flexible scraper rod 5 on the outside of the mounting base 4 to scrape the sludge at the bottom, loosening the sludge and improving its fluidity. When the sludge is discharged... When the output decreases, open the control valve 8 on the connecting pipe 71 and close the control valve 8 on the sludge discharge main pipe 1. Then start the water pump 72. Under the action of the float 9, the inlet of the water pipe 73 is always below the liquid surface, which can bring the upper sewage into the sludge discharge main pipe 1 through the connecting pipe 71 and then discharge it through the sludge discharge branch pipe 2 to flush the surrounding sludge. The water pressure is used to break up the sludge, reduce the viscosity of the sludge, and make it easier for the accumulated sludge to collapse and flow by gravity. At the same time, the water flow reverses and drives the connecting shaft 61 to rotate, so that the flexible scraper 5 scrapes the sludge synchronously, further reducing the integrity of the sludge, increasing the fluidity of the sludge, and facilitating the discharge of the sludge.

[0042] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A sludge scraping and slag removal device for a black film biogas digester, characterized in that, include: The sludge discharge pipeline system located inside the black membrane tank; The sludge discharge pipeline system includes a sludge discharge main pipe (1), with sludge discharge branch pipes (2) connected to both sides of the sludge discharge main pipe (1). A fixed cylinder (3) is provided at one end of the sludge discharge branch pipe (2) away from the sludge discharge main pipe (1). The sludge discharge branch pipe (2) is connected to the fixed cylinder (3). A mounting seat (4) is rotatably provided on the top of the fixed cylinder (3). A flexible scraper (5) for loosening sludge is fixed around the mounting seat (4). An automatic drive component (6) for rotating the mounting seat (4) is provided inside the fixed cylinder (3). One end of the sludge discharge main pipe (1) extends to the outside of the black film tank and is connected to a pump body for sludge extraction, and the other end of the sludge discharge main pipe (1) is connected to a backwashing system (7).

2. The sludge scraping and slag removal device for a black film biogas digester according to claim 1, characterized in that: The backwash system (7) includes a connecting pipe (71) connected to the sludge discharge main pipe (1), and a water pump (72) is connected to one end of the connecting pipe (71) away from the sludge discharge main pipe (1). The water inlet of the water pump (72) is rotatably connected to an inlet pipe (73).

3. The sludge scraping and slag removal device for a black film biogas digester according to claim 1, characterized in that: The automatic drive assembly (6) includes a connecting shaft (61) fixed to the bottom of the mounting base (4). The connecting shaft (61) is rotatably connected to the inside of the fixed cylinder (3) by a bearing. An impeller plate (62) is fixed to the surface of the connecting shaft (61).

4. The sludge scraping and slag removal device for a black film biogas digester according to claim 1, characterized in that: The flexible scraper bar (5) includes a fixing rod (51) fixed to the outside of the mounting base (4), and the bottom of the fixing rod (51) is fixed with an elastic rubber plate (52).

5. The sludge scraping and slag removal device for a black film biogas digester according to claim 2, characterized in that: Control valves (8) are provided on both the sludge discharge main pipe (1) and the connecting pipe (71), and a filter screen is provided at the inlet of the water inlet pipe (73).

6. The sludge scraping and slag removal device for a black film biogas digester according to claim 2, characterized in that: The water inlet pipe (73) is a water inlet hose. A float (9) is installed on the outer side of the end of the water inlet pipe (73) away from the water pump (72), and the water inlet pipe (73) is located at the lower end of the float (9).

7. The sludge scraping and slag removal device for a black film biogas digester according to claim 1, characterized in that: A connecting seat (10) is fixed on the outside of the connection between the sludge discharge main pipe (1) and the sludge discharge branch pipe (2). The bottom of the connecting seat (10) and the fixing cylinder (3) are bonded to the bottom of the black film pool.

Images