Scum removal structure of anaerobic fermentation tank

Abstract

The utility model relates to the technical field of scum removal, and discloses a scum removal structure of an anaerobic fermentation tank, which solves the problems of poor feeding effect and poor scum removal effect, an elliptical turntable is driven by a driving motor to rotate, and a telescopic pipe continuously performs telescopic motion under the action of the elliptical turntable, so that the scum removal effect is improved. Liquid level difference is formed through continuous expansion and contraction of the telescopic pipe, the input end is lower than the liquid level when the telescopic pipe contracts, scum and liquid floating on the liquid level are sucked into the scum collecting barrel under the water surface tension and the eddy current effect, the feeding effect is improved, the scum and the liquid are discharged into the scum separating mechanism under the action of the first water pump installed on the water pipe, and the feeding efficiency is improved. Under the action of the filter plate, scum and liquid are separated, the liquid enters the water storage cavity, the scum enters the scum storage cavity, under the action of the second water pump, the liquid in the water storage cavity is discharged into the tank body through the drainage pipe, the scum is discharged out of the scum separation mechanism through the scum discharge pipe, the scum is separated and discharged, and the scum removal effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of scum removal, in particular to a scum removal structure for an anaerobic fermentation tank. Background Art

[0002] During anaerobic fermentation, a layer of scum often forms on the surface of the fermentation tank due to factors such as the nature of the material and fermentation conditions. If this scum is not removed promptly, it will not only hinder the smooth discharge of biogas and affect fermentation gas production, but may also cause stratification of the material in the fermentation tank, affecting the fermentation effect. Therefore, a scum removal mechanism is crucial to ensure the normal operation of the anaerobic fermentation system.

[0003] The existing Chinese patent with announcement number CN205774508U discloses a scum removal device for an anaerobic fermentation tank, including an anaerobic fermentation tank and a stirring device arranged in the anaerobic fermentation tank and located at the bottom of the anaerobic fermentation tank. It also includes a scum feed hopper, a scum temporary storage tank and a water ring pump. The scum feed hopper is arranged in the anaerobic fermentation tank and located at the top of the anaerobic fermentation tank.

[0004] Regarding the above-mentioned related technologies, it was found that the scum was pushed into the scum feed hopper by natural inflow and negative pressure, resulting in poor feeding effect. Since some scum was formed due to its own properties, it was sucked to the bottom of the fermentation tank and discharged. After being broken up by the stirring device, it will still float up to form scum, resulting in poor slag removal effect. Utility Model Content

[0005] The purpose of the utility model is to provide a scum removal structure for an anaerobic fermentation tank. The device is used to work, thereby solving the problem that the scum is pushed into the scum feeding hopper by natural inflow and negative pressure, but the feeding effect is poor. Since part of the scum is formed due to its own properties, it is sucked to the bottom of the fermentation tank and discharged. After being broken up by a stirring device, it will still float up to form scum, resulting in poor scum removal effect.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a scum removal structure for an anaerobic fermentation tank, comprising a tank body, a scum separation mechanism fixedly mounted on one side of the tank body, the scum separation mechanism being connected to a scum conveying mechanism on a side close to the tank body, and the scum conveying mechanism being connected to a scum collection mechanism on a side away from the scum separation mechanism, the scum collection mechanism comprising a scum collector shell, a drive motor being fixedly mounted on one side of the interior of the scum collector shell, an elliptical turntable being mounted on the output end of the drive motor, a scum collection bucket being provided on one side of the elliptical turntable, the output end of the scum collection bucket being connected to a water pipe, a telescopic tube being slidably mounted on the outer side of the input end of the scum collection bucket, and one end of the telescopic tube being frictionally connected to the outer side of the elliptical turntable.

[0007] Preferably, the scum separation mechanism includes a scum separator shell, a water inlet is provided at the upper end of the scum separator shell near the side of the tank body, the output end of the water inlet pipe is connected, a filter plate is fixedly installed on the upper side of the interior of the scum separator shell, a water baffle is fixedly installed at one end of the filter plate, the bottom of the scum separator shell is connected to a drain pipe, a water pump 2 is fixedly installed at one end of the drain pipe, a solenoid valve 1 is provided on the drain pipe, the bottom of the scum separator shell is connected to a slag discharge pipe, the input end of the slag discharge pipe is connected to the slag separation mechanism, and a solenoid valve 2 is provided on the slag discharge pipe.

[0008] Preferably, the scum collecting mechanism is located below the liquid level inside the tank body, so that the scum located on the liquid surface can enter the scum collecting mechanism.

[0009] Preferably, the input end of the telescopic tube is located below the liquid surface when the telescopic tube is retracted, and is located above the liquid surface when the telescopic tube is extended, so that when the telescopic tube is retracted, the scum floating on the liquid surface and the liquid are sucked into the scum collection bucket under the surface tension of the water and the eddy current effect, and when the telescopic tube is extended, the suction of scum and liquid is stopped.

[0010] Preferably, the water pipe output end is fixedly passed through the tank body, the water pipe input end passes through the scum collector shell and is connected to the scum collection bucket output end, and a water pump is fixedly installed on the outside of one end of the water pipe close to the scum collection mechanism.

[0011] Preferably, the water baffle and the filter plate form a water storage cavity inside the scum separator shell, temporarily storing water in the water storage cavity, and discharging it after reaching a certain storage volume. The water baffle and the scum separator shell form a slag storage cavity, temporarily storing slag in the slag storage cavity, and discharging it after reaching a certain storage volume.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0013] 1. The utility model proposes a scum removal structure for an anaerobic fermentation tank. A driving motor drives an elliptical turntable to rotate. Under the action of the elliptical turntable, a telescopic tube continuously extends and retracts. The continuous extension and retraction of the telescopic tube creates a liquid level difference. When the telescopic tube contracts, the input end is lower than the liquid level. Under the effect of water surface tension and eddy currents, the scum and liquid floating on the liquid surface are sucked into the scum collection bucket, thereby improving the feeding efficiency.

[0014] 2. The utility model proposes a scum removal structure for an anaerobic fermentation tank, which separates scum and liquid under the action of a filter plate, allowing the liquid to enter the water storage cavity and the scum to enter the scum storage cavity. Under the action of a second water pump, the liquid in the water storage cavity is discharged into the tank body through a drain pipe, and the scum is discharged from the scum separation mechanism through a scum discharge pipe, thereby separating and discharging the scum and improving the scum removal effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1This is a schematic diagram of the three-dimensional cross-sectional structure of the overall structure of the utility model;

[0016] Figure 2 It is a schematic diagram of the three-dimensional structure of the slag collection mechanism, slag conveying mechanism, and slag separation mechanism of the utility model;

[0017] Figure 3 This is a schematic diagram of the three-dimensional structure of the slag collection mechanism of the present utility model;

[0018] Figure 4 This is a schematic diagram of the three-dimensional structure of the slag conveying mechanism of the present utility model;

[0019] Figure 5 It is a schematic diagram of the three-dimensional cross-sectional structure of the slag separation mechanism of the present utility model.

[0020] In the figure: 1. Tank body; 2. Scum collecting mechanism; 21. Scum collector housing; 22. Drive motor; 23. Oval turntable; 24. Scum collecting bucket; 25. Telescopic tube; 3. Scum conveying mechanism; 31. Water pipe; 32. Water pump 1; 4. Scum separation mechanism; 41. Scum separator housing; 42. Water inlet; 43. Filter plate; 44. Water baffle; 45. Drain pipe; 46. Water pump 2; 47. Solenoid valve 1; 48. Scum discharge pipe; 49. Solenoid valve 2. DETAILED DESCRIPTION

[0021] 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 embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0022] In order to further understand the content of the present invention, the present invention is described in detail with reference to the accompanying drawings.

[0023] Combine Figure 1 and Figure 2 A scum removal structure for an anaerobic fermentation tank includes a tank body 1, a scum separation mechanism 4 is fixedly installed on one side of the tank body 1, the scum separation mechanism 4 is connected to a scum conveying mechanism 3 on the side close to the tank body 1, the scum conveying mechanism 3 is fixedly passed through the tank body 1, and the scum conveying mechanism 3 is connected to a scum collecting mechanism 2 on the side away from the scum separation mechanism 4, and the scum collecting mechanism 2 is located below the liquid level line inside the tank body 1.

[0024] Combine Figure 2 and Figure 3The scum collecting mechanism 2 includes a scum collector housing 21, a driving motor 22 is fixedly installed on one side of the interior of the scum collector housing 21, an elliptical turntable 23 is installed on the output end of the driving motor 22, and a scum collecting bucket 24 is provided on one side of the elliptical turntable 23. The scum collecting bucket 24 is fixedly installed inside the scum collector housing 21, and the input end of the scum collecting bucket 24 is connected to the scum collector housing 21. A telescopic tube 25 is slidably installed on the outer side of the input end of the scum collecting bucket 24. The telescopic tube 25 passes through the scum collector housing 21. When the telescopic tube 25 is retracted, the input end is below the liquid level line. When the telescopic tube 25 is extended, the input end is above the liquid level line. One end of the telescopic tube 25 is frictionally connected to the outer side of the elliptical turntable 23.

[0025] Combine Figure 2 and Figure 4 The scum conveying mechanism 3 includes a water pipe 31, the output end of the water pipe 31 is fixedly passed through the tank body 1, the input end of the water pipe 31 passes through the scum collector shell 21 and is connected to the output end of the scum collecting bucket 24, and a water pump 32 is fixedly installed on the outside of one end of the water pipe 31 near the scum collecting mechanism 2.

[0026] Combine Figure 2 and Figure 5 The driving motor 22 drives the elliptical turntable 23 to rotate. The rotation of the elliptical turntable 23 drives the telescopic tube 25 to continuously expand and contract on the scum collecting bucket 24. The continuous expansion and contraction of the telescopic tube 25 forms a liquid level difference. Under the surface tension of the water and the eddy current effect, the scum and liquid floating on the liquid surface are sucked into the scum collecting bucket 24. The scum and liquid entering the scum collecting bucket 24 flow into the water pipe 31 and are quickly discharged to the output end of the water pipe 31 under the action of a water pump 32 installed on the water pipe 31.

[0027] The scum separation mechanism 4 includes a scum separator housing 41, a water inlet 42 is opened on the upper end of the scum separator housing 41 near the side of the tank body 1, the water inlet 42 is connected to the output end of the water pipe 31, and a filter plate 43 is fixedly installed on the upper side of the scum separator housing 41. The filter plate 43 is tilted, and a water baffle 44 is fixedly installed on the lower end of the filter plate 43. The water baffle 44 and the filter plate 43 form a water storage cavity inside the scum separator housing 41. The water baffle 44 and the scum separator housing are connected. 41 forms a slag storage cavity, and the bottom of the slag separator housing 41 is connected to a drain pipe 45, the input end of the drain pipe 45 is connected to the water storage cavity, and the output end of the drain pipe 45 passes through the tank body 1 and is connected to the inside of the tank body 1. A water pump 2 46 is fixedly installed at one end of the drain pipe 45, and a solenoid valve 1 47 is provided on the drain pipe 45. The bottom of the slag separator housing 41 is connected to a slag discharge pipe 48, the input end of the slag discharge pipe 48 is connected to the slag storage cavity, and a solenoid valve 2 49 is provided on the slag discharge pipe 48.

[0028] The output end of the water pipe 31 discharges the scum and liquid to the scum separation mechanism 4 through the water inlet 42. After entering the scum separation mechanism 4, the scum and liquid flow onto the filter plate 43. Under the action of the filter plate 43, the liquid enters the water storage cavity below the filter plate 43. Under the action of the filter plate 43, the scum slides to the lower end of the filter plate 43 and enters the scum storage cavity. When the liquid in the water storage cavity reaches a set volume, the water pump 2 46 and the solenoid valve 1 47 are opened. Under the action of the water pump 2 46, the liquid in the water storage cavity enters the tank body 1 through the drain pipe 45. When the liquid in the water storage cavity is less than a certain volume, the water pump 2 46 and the solenoid valve 1 47 are closed. When the scum in the slag storage cavity reaches a set volume, the solenoid valve 2 49 is opened, and the scum is discharged from the slag separation mechanism 4 through the slag discharge pipe 48. When the scum in the slag storage cavity is less than a certain volume, the solenoid valve 2 49 is closed.

[0029] Working principle: The elliptical turntable 23 is driven to rotate by the driving motor 22. Under the action of the elliptical turntable 23, the telescopic tube 25 continuously performs telescopic motion. The continuous telescopic movement of the telescopic tube 25 forms a liquid level difference. When the telescopic tube 25 contracts, the input end is lower than the liquid surface. Under the effect of the water surface tension and eddy current, the scum and liquid floating on the liquid surface are sucked into the telescopic tube 25. The scum and liquid entering the telescopic tube 25 enter the scum collecting bucket 24. The scum and liquid entering the scum collecting bucket 24 flow into the water pipe 31. Under the action of the water pump 32 installed on the water pipe 31, the scum and liquid are quickly discharged into the scum separation mechanism 4. The scum and liquid are separated under the action of the filter plate 43, so that the liquid The liquid enters the water storage cavity, and the slag enters the slag storage cavity. When the liquid in the water storage cavity reaches a set volume, the water pump 2 46 and the solenoid valve 1 47 are opened. Under the action of the water pump 2 46, the liquid in the water storage cavity enters the tank body 1 through the drain pipe 45. When the liquid in the water storage cavity is lower than a certain volume, the water pump 2 46 and the solenoid valve 1 47 are closed. When the slag in the slag storage cavity reaches a set volume, the solenoid valve 2 49 is opened, and the slag is discharged from the slag separation mechanism 4 through the slag discharge pipe 48. When the slag in the slag storage cavity is lower than a certain volume, the solenoid valve 2 49 is closed, and the slag cannot be completely discharged to prevent air from flowing back into the slag separation mechanism 4 and affecting the anaerobic reaction of the tank body 1.

[0030] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0031] Although the 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 variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A scum removal structure for an anaerobic fermentation tank, comprising a tank body (1), a scum separation mechanism (4) fixedly mounted on one side of the tank body (1), a scum conveying mechanism (3) connected to the side of the scum separation mechanism (4) close to the tank body (1), and a scum collection mechanism (2) connected to the side of the scum conveying mechanism (3) away from the scum separation mechanism (4), characterized in that: The scum collecting mechanism (2) comprises a scum collector housing (21), a driving motor (22) is fixedly mounted on one side of the interior of the scum collector housing (21), an elliptical turntable (23) is mounted on the output end of the driving motor (22), a scum collecting bucket (24) is provided on one side of the elliptical turntable (23), the output end of the scum collecting bucket (24) is connected to the water pipe (31), a telescopic tube (25) is slidably mounted on the outside of the input end of the scum collecting bucket (24), and one end of the telescopic tube (25) is frictionally connected to the outside of the elliptical turntable (23).

2. The scum removal structure for an anaerobic fermentation tank according to claim 1, characterized in that: The scum separation mechanism (4) comprises a scum separator housing (41). A water inlet (42) is provided at the upper end of the scum separator housing (41) near the side of the tank body (1). The water inlet (42) is connected to the output end of the water pipe (31). A filter plate (43) is fixedly installed on the upper side of the interior of the scum separator housing (41). A water retaining plate (44) is fixedly installed on one end of the filter plate (43). The bottom of the scum separator housing (41) is connected to a drain pipe (45). A water pump (46) is fixedly installed at one end of the drain pipe (45). A solenoid valve (47) is provided on the drain pipe (45). The bottom of the scum separator housing (41) is connected to a scum discharge pipe (48). The input end of the scum discharge pipe (48) is connected to the scum separation mechanism (4). A solenoid valve (49) is provided on the scum discharge pipe (48).

3. The scum removal structure for an anaerobic fermentation tank according to claim 1, characterized in that: The scum collection mechanism (2) is located below the liquid level inside the tank body (1).

4. The scum removal structure for an anaerobic fermentation tank according to claim 3, characterized in that: When the telescopic tube (25) is retracted, the input end is located below the liquid surface line, and when the telescopic tube (25) is extended, the input end is located above the liquid surface line.

5. The scum removal structure for an anaerobic fermentation tank according to claim 2, characterized in that: The output end of the water pipe (31) is fixedly passed through the tank body (1), and the input end of the water pipe (31) passes through the scum collector housing (21) and is connected to the output end of the scum collection bucket (24). A water pump (32) is fixedly installed on the outside of one end of the water pipe (31) close to the scum collection mechanism (2).

6. The scum removal structure for an anaerobic fermentation tank according to claim 2, characterized in that: The water baffle (44) and the filter plate (43) form a water storage cavity inside the scum separator housing (41), and the water baffle (44) and the scum separator housing (41) form a scum storage cavity.

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