A device for removing sundries from cow dung for biogas liquid production

Abstract

The utility model discloses a cow dung impurity removing device for biogas liquid production applied to the clean energy field, through opening vibration motor drive precipitator and impurity removing grid frame vibration, make impurity removing grid frame break up the cow dung of agglomeration, can also make that straw, stone and other sundries are intercepted by impurity removing grid frame, reach the effect that straw and stone and other sundries in cow dung are removed simultaneously, and the impurity removing effect is better, and after impurity removing is completed, can detachable impurity removing grid frame is taken down and is cleaned, and the user can move multiple impurity removing grid frames simultaneously through the pull connection link, and the synchronous installation and synchronous dismounting of multiple impurity removing grid frames are convenient, and the efficiency when installing or subsequent dismounting replacement, flushing can be improved, in addition, the model gradually changing impurity removing grid frame can intercept sundries of different sizes in turn, cooperate the design of triangular pyramid, make impurity removing grid frame not easy to produce the blockage, and the impurity removing effect is better, and can carry out efficient impurity removing operation.

Description

Technical Field

[0001] This utility model relates to the field of clean energy, and in particular to a cow dung removal device for biogas production. Background Technology

[0002] The core of turning cow dung into biogas slurry is anaerobic fermentation. In a sealed environment, cow dung is decomposed by microorganisms to produce biogas, and the remaining liquid residue is the biogas slurry. This process mainly involves three steps: Pretreatment: removing impurities (such as straw and stones) from the cow dung and adjusting the moisture content and concentration to create a suitable environment for microorganisms; Anaerobic fermentation: putting the pretreated cow dung into a biogas digester. Under air-isolated conditions, methanogenic bacteria and other microorganisms decompose the organic matter to produce biogas (mainly composed of methane); Solid-liquid separation: after fermentation, the biogas, biogas residue (solid residue), and biogas slurry are separated using a sedimentation tank or separation equipment to finally obtain biogas slurry.

[0003] Existing technology (patent document with publication number "CN204111552U") discloses an automatic crushing and scooping machine for biogas engineering pretreatment, which consists of five parts: an automatic walking assembly, a rotary tillage and crushing assembly, a scooping assembly, a brushing assembly, and an automatic conveying assembly. During operation, the automatic walking assembly can move back and forth in the pool according to instructions, continuously crushing clumps of cow dung to ensure uniform material distribution. The rotary tillage and crushing assembly uses a rotary tillage mode with multiple blades to directly crush lumps of material, while also accelerating the impact of the lumps against the bottom of the pool along the tangential direction of the blades. The hooks on the hooked scooping chain scoop up impurities from the liquid, flipping them over the upper roller from bottom to top. The nylon brushes on the brushing assembly move in opposite directions with the hooked scooping chain, brushing the impurities onto the impurity conveyor belt. The impurities on the conveyor belt are then transported laterally through the impurity conveying cylinder and out of the pretreatment area.

[0004] Based on the above search and combined with existing technology, it was found that existing impurity removal devices are effective at removing impurities such as straw, but not so effective at removing solid impurities such as stones. Stones and other impurities are hard and not easy to break. If they cannot be effectively removed, it will affect the smooth progress of subsequent processes and may also cause the impurity removal device to jam, which is not conducive to the full treatment of cow manure. Utility Model Content

[0005] The core of this invention lies in solving the problem of poor removal efficiency for solid debris such as stones in existing technologies by using multiple different types of debris-removing mesh frames in conjunction with a vibrating motor. Furthermore, the detachable mesh frames facilitate easy removal and cleaning, simplifying subsequent cleaning operations.

[0006] To solve the above problems, the present invention adopts the following technical solution.

[0007] A cow dung removal device for biogas production includes a support frame and a sedimentation tank fixed on the support frame. A feeding hopper is fixed at the top of the sedimentation tank, and a discharge port with a valve is provided at the bottom of the sedimentation tank. The sedimentation tank is characterized by being a funnel-shaped tank that is wider at the top and narrower at the bottom.

[0008] The sedimentation tank is equipped with a detachable impurity removal grid frame, which includes a horizontal frame plate and a vertical frame plate. A triangular pyramid is set on the top of both the horizontal and vertical frame plates. The horizontal frame plate, the vertical frame plate, and the triangular pyramid are integrally formed.

[0009] Multiple impurity removal grid frames are set up, arranged sequentially from top to bottom and distributed at equal intervals. The multiple impurity removal grid frames are of different sizes and decrease in size from top to bottom.

[0010] A vibrating motor is fixed to the outside of the sedimentation tank to drive the sedimentation tank to vibrate.

[0011] By setting up multiple different models of impurity removal grid frames, with the model number decreasing from top to bottom, the vibration motor drives the sedimentation tank to vibrate after starting, thereby causing the multiple impurity removal grid frames inside to vibrate. The vibrating impurity removal grid frames can break up the clumps of cow manure after soaking, and at the same time, the straw is intercepted as it moves downward with the cow manure. Similarly, hard impurities such as stones in the cow manure are also intercepted by the impurity removal grid frames, achieving the effect of removing straw and stones and other impurities from the cow manure at the same time, resulting in better impurity removal. After the impurity removal is completed, the detachable impurity removal grid frames can be removed for cleaning, thus facilitating subsequent cleaning operations.

[0012] Furthermore, multiple impurity removal grid frames are fixed together by connecting rods, and the connecting rods are integrally formed with the multiple impurity removal grid frames. The connecting rods are located in the middle of the impurity removal grid frames, and the axis of the connecting rods coincides with the axis of the sedimentation tank.

[0013] Furthermore, multiple positioning bolts are fixed at the bottom of the multiple impurity removal grid frames. Multiple positioning bolts are arranged and distributed circumferentially along the axis of the connecting rod. The multiple positioning bolts are integrally formed with the bottom of the horizontal frame plate and the vertical frame plate, and the positioning bolts are located at the end of the horizontal frame plate and the vertical frame plate that is close to the inner wall of the sedimentation tank.

[0014] Furthermore, a positioning ring is fixed inside the sedimentation tank. Multiple positioning rings are provided, each corresponding to a multiple positioning bolt. The multiple positioning bolts are inserted into the multiple positioning rings.

[0015] Furthermore, a lifting ring is fixed to the upper end of the connecting rod, and the upper end of the lifting ring extends above the liquid surface in the sedimentation tank.

[0016] Preferably, a water inlet pipe is fixed on one side of the connecting rod, and the water inlet pipe is fixed and connected to an external water supply pipe. The connecting rod and multiple impurity removal grid frames are provided with a water distribution channel connected to the water inlet pipe. Each impurity removal grid frame has multiple evenly distributed spray holes at the bottom of its horizontal and vertical frame plates, and the spray holes are connected to the water distribution channel.

[0017] Compared with existing technologies, the advantages of this utility model are:

[0018] (1) This solution uses a vibrating motor to drive the sedimentation tank and the impurity removal grid frame to vibrate, so that the cow manure and water are mixed evenly. The impurity removal grid frame can break up the clumps of cow manure. After soaking for a period of time, the staff can open the valve of the discharge port to discharge the mixture of cow manure and water downwards. At the same time, the vibrating motor is started to drive the sedimentation tank and the impurity removal grid frame to vibrate, so that the impurity removal grid frame continues to break up the clumps of cow manure. At the same time, straw, stones and other debris are also intercepted by the impurity removal grid frame, achieving the effect of removing straw and stones and other debris from cow manure at the same time. The impurity removal effect is better. After the impurity removal is completed, the detachable impurity removal grid frame can be removed for cleaning, which facilitates subsequent cleaning operations.

[0019] In addition, the gradually changing mesh frame can intercept debris of different sizes in sequence. Combined with the triangular cone design, the mesh frame is less prone to clogging, resulting in better debris removal and enabling efficient debris removal operations.

[0020] (2) By installing a water inlet pipe on the connecting rod and opening a water distribution channel and a spray hole, external water can be directly transported to the spray hole and sprayed downwards, so that the water can directly enter the cow manure pile, which can accelerate the mixing efficiency of water and cow manure, thereby reducing the soaking time of cow manure in the sedimentation tank and improving the processing efficiency of the cow manure impurity removal device for biogas production. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0022] Figure 2 This is a schematic diagram of the impurity removal grid frame and connecting rod structure in cross-section of the sedimentation tank of this utility model;

[0023] Figure 3 This is a schematic diagram of the impurity removal grid frame structure of this utility model;

[0024] Figure 4 This is a schematic diagram of the sedimentation tank structure of this utility model;

[0025] Figure 5 This is a cross-sectional view of the connecting rod and the impurity removal grid frame of this utility model.

[0026] Explanation of the labels in the diagram:

[0027] 1. Support frame; 2. Sedimentation tank; 21. Feed hopper; 22. Discharge port; 23. Positioning ring; 3. Impurity removal grid frame; 31. Horizontal support plate; 32. Longitudinal support plate; 33. Triangular pyramid; 34. Positioning bolt; 4. Vibration motor; 5. Connecting rod; 51. Water inlet pipe; 6. Lifting ring; 7. Water distribution channel; 8. Spray hole. Detailed Implementation

[0028] The technical solution will now be clearly and completely described with reference to the accompanying drawings in the embodiments of this utility model.

[0029] First implementation method:

[0030] Please see Figures 1-4 A cow dung removal device for biogas liquid production includes a support 1 and a sedimentation tank 2 fixed on the support 1. A feeding hopper 21 is fixed on the top of the sedimentation tank 2, and a discharge port 22 with a valve body is provided at the bottom of the sedimentation tank 2. The sedimentation tank 2 is a funnel-shaped tank that is wider at the top and narrower at the bottom.

[0031] A detachable impurity removal grid frame 3 is installed in the sedimentation tank 2. The impurity removal grid frame 3 includes a horizontal frame plate 31 and a vertical frame plate 32. A triangular pyramid 33 is provided on the top of both the horizontal frame plate 31 and the vertical frame plate 32. The horizontal frame plate 31, the vertical frame plate 32, and the triangular pyramid 33 are integrally formed.

[0032] Multiple impurity removal grid frames 3 are provided, and the multiple impurity removal grid frames 3 are arranged sequentially from top to bottom and are equally spaced. The multiple impurity removal grid frames 3 are of different sizes and decrease in size from top to bottom.

[0033] A vibration motor 4 is fixed to the outside of the sedimentation tank 2 to drive the sedimentation tank 2 to vibrate.

[0034] Based on the above structure, when using the equipment, the staff first puts the cow manure to be treated into the sedimentation tank 2, and adds an appropriate amount of water according to actual needs to soak the cow manure that may clump. During soaking, the vibrating motor 4 can be turned on to drive the sedimentation tank 2 and the impurity removal grid frame 3 to vibrate, so that the cow manure and water are mixed evenly. The impurity removal grid frame 3 can also break up the clumps of cow manure. After soaking for a period of time, the staff can open the valve of the discharge port 22 to discharge the mixture of cow manure and water downwards, and at the same time start the vibrating motor 4 to drive the sedimentation tank 2 and the impurity removal grid frame 3 to vibrate, so that the impurity removal grid frame 3 continues to break up the clumps of cow manure. At the same time, the straw is intercepted when it moves downwards with the cow manure. Similarly, hard impurities such as stones in the cow manure are also intercepted by the impurity removal grid frame 3, achieving the effect of removing straw and stones and other impurities from the cow manure at the same time. The impurity removal effect is better. After the impurity removal is completed, the detachable impurity removal grid frame 3 can be removed for cleaning, which facilitates subsequent cleaning operations.

[0035] In addition, the gradually changing impurity removal grid frame 3 can intercept impurities of different sizes in sequence. Combined with the design of the triangular cone 33, the impurity removal grid frame 3 is less prone to clogging, resulting in better impurity removal effect and enabling efficient impurity removal operations.

[0036] Furthermore, multiple impurity removal grid frames 3 are fixed together by connecting rods 5, and the connecting rods 5 are integrally formed with the multiple impurity removal grid frames 3. The connecting rods 5 are located in the middle of the impurity removal grid frames 3, and the axis of the connecting rods 5 coincides with the axis of the sedimentation tank 2. Users can move multiple impurity removal grid frames 3 at the same time by pulling the connecting rods 5, which facilitates the synchronous installation and disassembly of multiple impurity removal grid frames 3, and can improve the efficiency of installation or subsequent disassembly, replacement, and flushing, thereby improving the cow manure treatment efficiency of the cow manure removal device for biogas liquid production.

[0037] Furthermore, each of the multiple impurity removal grid frames 3 is fixed with a positioning bolt 34 at its bottom. Multiple positioning bolts 34 are provided and distributed circumferentially along the axis of the connecting rod 5. The multiple positioning bolts 34 are integrally formed with the bottom of the transverse frame plate 31 and the longitudinal frame plate 32, and the positioning bolts 34 are located at the end of the transverse frame plate 31 and the longitudinal frame plate 32 that is close to the inner wall of the sedimentation tank 2.

[0038] A positioning ring 23 is fixed inside the sedimentation tank 2. Multiple positioning rings 23 are provided and correspond one-to-one with multiple positioning bolts 34. The multiple positioning bolts 34 are respectively inserted into the multiple positioning rings 23.

[0039] By setting the positioning bolt 34 and the positioning ring 23, the positioning bolt 34 can be inserted into the positioning ring 23 to fix the impurity removal grid frame 3 to the sedimentation tank 2. Thus, during the operation, the impurity removal grid frame 3 can vibrate synchronously with the sedimentation tank 2. Under the action of its own weight and the weight of the material, the impurity removal grid frame 3 can be connected to the sedimentation tank 2 relatively stably and is not easy to detach.

[0040] When it is necessary to remove the impurity removal grid frame 3, simply pull the connecting rod 5 vertically upwards to disengage the positioning bolt 34 from the positioning ring 23, thereby removing multiple impurity removal grid frames 3. The operation is convenient and quick.

[0041] Furthermore, to facilitate the removal of multiple impurity removal grid frames 3 and reduce manual labor load, a lifting ring 6 is fixed to the upper end of the connecting rod 5. The upper end of the lifting ring 6 extends above the liquid surface in the sedimentation tank 2. After the impurity removal operation is completed, the staff can use lifting equipment such as cranes and electric hoists to lift and move the connecting rod 5 by hooking the hook onto the lifting ring 6. This facilitates the automated movement of multiple impurity removal grid frames 3, which can further improve work efficiency and reduce the labor load of the staff.

[0042] Second implementation method:

[0043] Please see Figure 5 A cow dung removal device for biogas liquid production, which differs from the first embodiment in that:

[0044] A water inlet pipe 51 is fixed on one side of the connecting rod 5. The water inlet pipe 51 is fixed and connected to the external water supply pipe. The connecting rod 5 and multiple impurity removal grid frames 3 are provided with a water distribution channel 7 connected to the water inlet pipe 51. The bottom of the horizontal frame plate 31 and the vertical frame plate 32 of each impurity removal grid frame 3 are provided with multiple evenly distributed water spray holes 8, which are connected to the water distribution channel 7.

[0045] By installing a water inlet pipe 51 on the connecting rod 5 and opening a water distribution channel 7 and a spray hole 8, external water can be directly transported to the spray hole 8 and sprayed downwards, thereby allowing the water to directly enter the cow dung pile. This can accelerate the mixing efficiency of water and cow dung, thereby reducing the soaking time of cow dung in the sedimentation tank 2 and improving the processing efficiency of the cow dung impurity removal device for biogas production.

[0046] The above description is merely a preferred embodiment of this utility model; it encompasses all the protection scope of this utility model. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and its improved concept, should be covered within the protection scope of this utility model.

Claims

1. A cow dung removal device for biogas production, comprising a support frame (1) and a sedimentation tank (2) fixed on the support frame (1), wherein a feeding hopper (21) is fixed at the top of the sedimentation tank (2) and a discharge port (22) with a valve is provided at the bottom of the sedimentation tank (2), characterized in that: The sedimentation tank (2) is a funnel-shaped tank that is wider at the top and narrower at the bottom; The sedimentation tank (2) is detachably equipped with a cleaning grid frame (3). The cleaning grid frame (3) includes a horizontal frame plate (31) and a vertical frame plate (32). The top of the horizontal frame plate (31) and the vertical frame plate (32) are provided with a triangular pyramid (33). The horizontal frame plate (31), the vertical frame plate (32) and the triangular pyramid (33) are integrally formed. Multiple impurity removal grid frames (3) are provided, and the multiple impurity removal grid frames (3) are arranged sequentially from top to bottom and are distributed at equal intervals. The multiple impurity removal grid frames (3) are of different sizes and decrease in size from top to bottom. The sedimentation tank (2) is fixed with a vibration motor (4) that drives the sedimentation tank (2) to vibrate.

2. The cow dung removal device for biogas slurry production according to claim 1, characterized in that: Multiple impurity removal grid frames (3) are fixed together by connecting rods (5), and the connecting rods (5) are integrally formed with the multiple impurity removal grid frames (3). The connecting rods (5) are located in the middle of the impurity removal grid frames (3), and the axis of the connecting rods (5) coincides with the axis of the sedimentation tank (2).

3. The cow dung removal device for biogas slurry production according to claim 2, characterized in that: Each of the multiple impurity removal grid frames (3) is fixed with a positioning bolt (34) at its bottom. The positioning bolt (34) is provided in multiple and distributed circumferentially along the axis of the connecting rod (5). The multiple positioning bolts (34) are integrally formed with the bottom of the transverse frame plate (31) and the longitudinal frame plate (32), and the positioning bolts (34) are located at the end of the transverse frame plate (31) and the longitudinal frame plate (32) near the inner wall of the sedimentation tank (2).

4. The cow dung removal device for biogas slurry production according to claim 3, characterized in that: The sedimentation tank (2) is fixed with a positioning ring (23) inside. Multiple positioning rings (23) are provided and correspond one-to-one with multiple positioning bolts (34). The multiple positioning bolts (34) are respectively inserted into the multiple positioning rings (23).

5. The cow dung removal device for biogas slurry production according to claim 4, characterized in that: The upper end of the connecting rod (5) is fixed with a lifting ring (6), and the upper end of the lifting ring (6) extends above the liquid surface in the sedimentation tank (2).

6. The cow dung removal device for biogas slurry production according to claim 5, characterized in that: A water inlet pipe (51) is fixed on one side of the connecting rod (5). The water inlet pipe (51) is fixed and connected to an external water supply pipe. The connecting rod (5) and multiple impurity removal grid frames (3) are provided with a water distribution channel (7) connected to the water inlet pipe (51). Each impurity removal grid frame (3) has multiple evenly distributed water spray holes (8) at the bottom of its horizontal frame plate (31) and vertical frame plate (32). The water spray holes (8) are connected to the water distribution channel (7).

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