Kitchen anaerobic fermentation system

Abstract

The utility model discloses an anaerobic fermentation system for a kitchen. The anaerobic fermentation system comprises a digestion tank and a desanding assembly, the sand removing assembly comprises a settling tank, a sand discharging pipe, a water conveying pipe and a circulating pump, the settling tank is provided with a settling area and a water collecting area, the settling area is located at the bottom of the settling tank, the water collecting area is located above the settling area, the sand discharging pipe is communicated with the digestion tank and the settling tank, and the communicating position of the sand discharging pipe and the digestion tank is located at the bottom of the digestion tank; the communicating part of the circulating pump and the settling tank is positioned in the water collecting area; according to the scheme, settled sand in the digestion tank can be continuously discharged, scaling and blocking of a pipeline at the bottom of the digestion tank are avoided, an external water source does not need to be introduced, damage to balance in the digestion tank is avoided, meanwhile, hydraulic recycling is achieved, and water consumption is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to kitchen garbage treatment technical field, concretely relates to a kitchen anaerobic fermentation system. BACKGROUND

[0002] Kitchen garbage treatment mainly has landfill, incineration, anaerobic fermentation, aerobic composting, direct drying feed preparation, pyrolysis and microorganism treatment technology etc.

[0003] The utility model discloses a kind of complete equipment for kitchen garbage wet anaerobic biogas, it realizes double impurity separation with sand remover and homogenizing tank, so that the purity of feed of anaerobic fermentation production biogas is very high;Alkali interface and coil heat exchanger are provided on homogenizing tank, alkali interface prevents acidification phenomenon in advance in anaerobic digestion tank, and coil heat exchanger realizes temperature control in advance;Biogas is exported through defoaming tank, and defoaming tank separates small impurities contained in biogas, prevents subsequent gas pipeline blockage, and reduces the water content of biogas.

[0004] Although sand is removed by sand remover and homogenizing tank in the patent, sand still accumulates at the bottom of the digestion tank during long-time work, which easily leads to scaling of the pipeline at the bottom of the digestion tank, and external high-pressure water needs to be connected for flushing and cleaning, which increases water consumption and destroys the internal balance of the digestion tank. UTILITY MODEL CONTENTS

[0005] The utility model aims at overcoming the above technical deficiencies, and provides a kitchen anaerobic fermentation system, which solves the technical problem that the bottom of the digestion tank still accumulates sand during long-time work, which easily leads to scaling of the pipeline at the bottom of the digestion tank, even blockage, external high-pressure water needs to be connected for flushing and cleaning, which increases water consumption and destroys the internal balance of the digestion tank.

[0006] To achieve the above technical purposes, the utility model adopts the following technical solutions:

[0007] The utility model provides a kitchen anaerobic fermentation system, which comprises:

[0008] a digestion tank; and

[0009] a sand removal assembly, which comprises a settling tank, a sand discharge pipe, a water supply pipe and a circulating pump, the settling tank has a settling zone and a water collecting zone, the settling zone is located at the bottom of the settling tank, the water collecting zone is located above the settling zone, the sand discharge pipe is connected to the digestion tank and the settling tank, and the connection part of the sand discharge pipe to the digestion tank is located at the bottom of the digestion tank, the water supply pipe is connected to the settling tank and the digestion tank, and the connection part of the water supply pipe to the settling tank is located in the water collecting zone, and the circulating pump is arranged in the water supply pipe.

[0010] In some embodiments, the bottom wall of the digestion tank is downwardly inclined from the periphery to the middle;

[0011] The communication between the sand discharge pipe and the digestion tank is located in the middle of the bottom of the digestion tank.

[0012] In some embodiments, the sand discharge pipe has a sand discharging section extending into the digestion tank, the sand discharging section is located in the bottom of the digestion tank and extends from the sidewall of the digestion tank to the middle and is spaced apart from the bottom wall of the digestion tank.

[0013] In some embodiments, the kitchen anaerobic fermentation system further comprises a plurality of support frames, the plurality of support frames are spaced apart along the extension direction of the sand discharging section, each of the support frames is mounted to the bottom wall of the digestion tank and connected to the sand discharging section.

[0014] In some embodiments, the water conveying pipe comprises a flow guide pipe and a plurality of stirring pipes, the flow guide pipe communicates with the settling tank and the communication between the flow guide pipe and the settling tank is located in the water collecting area and partially surrounds the periphery of the digestion tank, each of the plurality of stirring pipes is connected to the flow guide pipe and is spaced apart along the circumferential direction of the digestion tank, and each of the stirring pipes further communicates with the digestion tank.

[0015] The circulating pump is arranged in the flow guide pipe.

[0016] In some embodiments, the water conveying pipe further comprises a plurality of stirring valves, each of the plurality of stirring valves is arranged in the plurality of stirring pipes.

[0017] In some embodiments, the inner wall of the digestion tank is cylindrically arranged;

[0018] The communication port between the water conveying pipe and the digestion tank is tangent to the inner wall of the digestion tank.

[0019] In some embodiments, the communication between the water conveying pipe and the digestion tank is located in the bottom of the digestion tank.

[0020] In some embodiments, the settling tank is inclined, the communication between the sand discharge pipe and the settling tank is located above the water collecting area and adjacent to the lower sidewall of the settling tank.

[0021] In some embodiments, the sand removal assembly further comprises a waste discharge pipe, a waste discharge tank and a waste discharge valve, the waste discharge pipe communicates the settling tank with the waste discharge tank and the communication between the waste discharge pipe and the settling tank is located in the settling area, and the waste discharge valve is arranged in the waste discharge pipe.

[0022] Compared with the prior art, the kitchen anaerobic fermentation system has the advantages that the water collecting area of the digestion tank and the sedimentation tank is communicated through the water conveying pipe, the supernatant after the settlement of the water collecting area can be conveyed to the digestion tank through the water conveying pipe by the circulating pump, the high-pressure supernatant in the digestion tank can disturb the sand at the bottom of the digestion tank while stirring the fermentation liquid in the digestion tank, and then the sand and the fermentation liquid mixture can be sent into the sedimentation tank through the sand discharging pipe. The supernatant of the fermentation liquid after the settlement separation in the sedimentation tank is located in the water collecting area for recycling, and the sand is settled in the sedimentation area. In this way, the sand in the digestion tank can be continuously discharged, the pipeline at the bottom of the digestion tank is prevented from being scaled and blocked, an external water source does not need to be introduced, the balance in the digestion tank is prevented from being destroyed, hydraulic recycling is realized, and water consumption is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 is a schematic view of the kitchen anaerobic fermentation system provided by the embodiment of the utility model;

[0024] Figure 2 is Figure 1 a partial schematic view of the kitchen anaerobic fermentation system;

[0025] Figure 3 is Figure 2 a schematic view of the sand removing assembly;

[0026] Figure 4 is Figure 1 a top view of the kitchen anaerobic fermentation system;

[0027] Figure 5 is Figure 4 an enlarged schematic view of A in the kitchen anaerobic fermentation system;

[0028] Figure 6 is Figure 4 a partial schematic view of the kitchen anaerobic fermentation system.

[0029] BRIEF DESCRIPTION OF DRAWINGS:

[0030] 1, digestion tank; 1a, communication port; 2, sand removing assembly; 21, sedimentation tank; 211, sedimentation area; 212, water collecting area; 22, sand discharging pipe; 221, sand discharging section; 23, water conveying pipe; 231, flow guide pipe; 232, stirring pipe; 24, circulating pump; 25, waste discharging pipe; 26, waste discharging valve; 3, support frame. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical scheme and advantages of the utility model more clearly understood, the utility model will be further described in detail below by combining with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model and not used to limit the utility model.

[0032] In order to solve the technical problems that the bottom of the digestion tank still accumulates sand, which easily causes the bottom pipeline of the digestion tank to scale and even to be blocked, and the external high-pressure water needs to be connected for cleaning, thereby increasing water consumption and destroying the balance inside the digestion tank, the utility model provides a kitchen anaerobic fermentation system which can realize uninterrupted discharge of sand in the digestion tank, avoids scaling and blocking of the bottom pipeline of the digestion tank, does not need to introduce external water source, avoids destroying the balance inside the digestion tank, simultaneously realizes hydraulic recycling, and reduces water consumption.

[0033] Reference Figures 1 to 3 , Figures 1 to 3 It is a structural schematic view of the kitchen anaerobic fermentation system in an embodiment of the utility model, and the kitchen anaerobic fermentation system comprises a digestion tank 1 and a sand removal assembly 2; the sand removal assembly 2 comprises a settling tank 21, a sand discharge pipe 22, a water delivery pipe 23 and a circulating pump 24, the settling tank 21 has a settling area 211 and a water collecting area 212, the settling area 211 is located at the bottom of the settling tank 21, the water collecting area 212 is located above the settling area 211, the sand discharge pipe 22 is communicated with the digestion tank 1 and the settling tank 21, and the communication part with the digestion tank 1 is located at the bottom of the digestion tank 1; the water delivery pipe 23 is communicated with the settling tank 21 and the digestion tank 1, and the communication part with the settling tank 21 is located in the water collecting area 212; and the circulating pump 24 is arranged in the water delivery pipe 23.

[0034] In the kitchen anaerobic fermentation system, the water delivery pipe 23 is communicated with the digestion tank 1 and the water collecting area 212 of the settling tank 21, so that the supernatant after settling in the water collecting area 212 can be delivered to the digestion tank 1 by the circulating pump 24, the high-pressure supernatant in the digestion tank 1 can disturb the sand at the bottom of the digestion tank 1 while stirring the fermentation liquid in the digestion tank 1, and then the sand and the fermentation liquid mixture can be sent into the settling tank 21 through the sand discharge pipe 22. The supernatant of the fermentation liquid after settling separation in the settling tank 21 is located in the water collecting area 212 for recycling, and the sand is settled in the settling area 211. In this way, the sand in the digestion tank 1 can be discharged uninterruptedly, the bottom pipeline of the digestion tank 1 can be prevented from scaling and blocking, external water source does not need to be introduced, the balance inside the digestion tank 1 can be prevented from being destroyed, hydraulic recycling can be realized, and water consumption can be reduced.

[0035] It should be noted that the specific structure and principle of the digestion tank 1 for purifying kitchen waste are prior art, which will not be described here.

[0036] In one of the embodiments, the bottom wall of the digestion tank 1 is downwardly inclined from the periphery to the middle; and the communication part of the sand discharge pipe 22 with the digestion tank 1 is located in the middle of the bottom of the digestion tank 1.

[0037] In the embodiment, the bottom of the digestion tank 1 is tapered downward, so that sand, chili seeds, and pepper seeds in the kitchen waste can settle on the bottom wall of the digestion tank 1. When the water inlet pipe 23 inputs high-pressure water into the digestion tank 1, the above-mentioned heavy objects can be quickly disturbed into the sand discharge pipe 22, and finally sent into the settling tank 21 for separation, thereby improving the sand discharge efficiency.

[0038] In one of the embodiments, the sand discharge pipe 22 has a sand outlet section 221 extending into the digestion tank 1. The sand outlet section 221 is located at the bottom of the digestion tank 1 and extends from the side wall of the digestion tank 1 to the middle, and is spaced apart from the bottom wall of the digestion tank 1.

[0039] In the embodiment, the sand outlet section 221 of the sand discharge pipe 22 is spaced apart from the bottom wall of the digestion tank 1 and extends in the radial direction of the digestion tank 1, so that the sand and the like can only enter the sand outlet section 221 under the disturbance of high-pressure water. At this time, the sand has kinetic energy and will not deposit in the sand outlet section 221 to cause blockage. In this way, blockage caused by the sand and the like falling into the sand outlet section 221 due to gravity can be effectively avoided.

[0040] In one of the embodiments, the kitchen anaerobic fermentation system further comprises a plurality of support frames 3. The plurality of support frames 3 are spaced apart along the extension direction of the sand outlet section 221. Each support frame 3 is installed on the bottom wall of the digestion tank 1 and connected to the sand outlet section 221.

[0041] In the embodiment, the sand outlet section 221 is fixed to the bottom of the digestion tank 1 by the plurality of support frames 3, thereby ensuring the installation stability of the sand outlet section 221 in the digestion tank 1. Specifically, in the present scheme, four support frames 3 are spaced apart.

[0042] In one of the embodiments, referring to Figure 4 and Figure 5 , the water inlet pipe 23 comprises a flow guide pipe 231 and a plurality of stirring pipes 232. The flow guide pipe 231 is connected to the settling tank 21 and communicates with the settling tank 21 at the water collecting area 212, and partially surrounds the outer periphery of the digestion tank 1. The plurality of stirring pipes 232 are respectively connected to the flow guide pipe 231 and are spaced apart in the circumferential direction of the digestion tank 1. Each stirring pipe 232 is also connected to the digestion tank 1. The circulating pump 24 is arranged in the flow guide pipe 231.

[0043] In the embodiment, a plurality of communication openings 1a are spaced apart in the circumferential direction of the digestion tank 1. The plurality of communication openings 1a can simultaneously input water, thereby improving the disturbance ability of the materials inside the digestion tank 1. In addition, the water inlet pipe 23 further comprises a plurality of stirring valves. The plurality of stirring valves are respectively arranged in the plurality of stirring pipes 232. In the present scheme, a valve is arranged on each stirring pipe 232, so that the opening and closing of each stirring pipe 232 can be controlled individually. Specifically, in the present scheme, three stirring pipes 232 are provided.

[0044] In one of the embodiments, the inner wall of the digestion tank 1 is cylindrically arranged; the water delivery pipe 23 is tangent to the inner wall of the digestion tank 1 at the communication port 1a of the digestion tank 1.

[0045] In the embodiment, the high-pressure water is sent into the digestion tank 1 along the tangent of the inner wall of the digestion tank 1, so as to form a circulating vortex flow in the digestion tank 1, and the sand, the chili seeds and the pepper seeds and the like are concentrated along the bottom slope of the digestion tank 1 near the sand discharge pipe 22, and then the disturbed fluid in the digestion tank 1 can send the above-mentioned heavy objects into the settling tank 21 through the sand discharge pipe 22, so as to improve the discharge efficiency of the sand and the like. It should be noted that the water flow can be a vortex flow to flush the sand into the settling tank 21, or the settling tank 21 can be arranged below the digestion tank 1, so that the sand can enter the settling tank 21 along the sand discharge pipe 22 under the action of gravity.

[0046] In one of the embodiments, the communication between the water delivery pipe 23 and the digestion tank 1 is located at the bottom of the digestion tank 1.

[0047] In the embodiment, the communication between the water delivery pipe 23 and the digestion tank 1 is also arranged at the bottom of the digestion tank 1, that is, the communication port 1a is arranged at the bottom of the digestion tank 1, so that the high-pressure water sent into the digestion tank 1 can be directly opposite to the sand and the like, and the sand and the like can be easily disturbed and discharged.

[0048] In one of the embodiments, the settling tank 21 is arranged obliquely, and the communication between the sand discharge pipe 22 and the settling tank 21 is located above the water collecting area 212 and adjacent to the side wall below the settling tank 21.

[0049] In the embodiment, the mixture entering the settling tank 21 from the sand discharge pipe 22 can slide along the side wall of the settling tank 21 and fall into the settling area 211, so as to reduce the disturbance ability of the mixture in the settling area 211, and the mixture can be quickly settled and separated in the settling area 211.

[0050] In one of the embodiments, referring to Figure 6 , the sand removal assembly 2 further comprises a waste discharge pipe 25, a waste discharge tank and a waste discharge valve 26, the waste discharge pipe 25 is in communication with the settling tank 21 and the waste discharge tank, and the communication between the waste discharge pipe 25 and the settling tank 21 is located in the settling area 211, and the waste discharge valve 26 is arranged in the waste discharge pipe 25.

[0051] In the embodiment, the sand and the like in the settling tank 21 can be periodically discharged into the waste discharge tank through the waste discharge pipe 25 and the waste discharge valve 26. It should be noted that the above-mentioned valves can be arranged as electromagnetic valves, so as to realize automatic control.

[0052] In order to better understand the present application, the following will be described in combination with Figures 1 to 6 The technical scheme of the present application will be described in detail:

[0053] In the scheme, a circle of flow guide pipes 231 is arranged around the digestion tank 1, and three stirring pipes 232 are respectively communicated with the flow guide pipes 231 and the digestion tank 1. Specifically, three tangent communication openings 1a are arranged on the inner wall of the digestion tank 1 to respectively communicate with the three stirring pipes 232, so as to form a hydraulic circulation vortex flow, which facilitates the concentration of sand, chili seeds and pepper seeds along the bottom slope of the digestion tank 1 near the sand discharge pipe 22, and the sand and the like is sent into the sedimentation tank 21 through the sand discharge pipe 22, and then is separated and settled in the sedimentation tank 21.

[0054] The fermented supernatant after settling is continuously transported to the flow guide pipes 231 and the stirring pipes 232 through the circulating pump 24, so as to continuously discharge the sand, chili seeds and pepper seeds into the sedimentation tank 21. The sand, chili seeds and pepper seeds after settling are periodically discharged to a waste discharge pool at the bottom of the sedimentation tank 21, and then are further subjected to solid-liquid separation and fine sand separation.

[0055] The system fully utilizes the hydraulic tangent entering mode to form a circulation, and combines with the bottom slope of the digestion tank 1 to concentrate the heavy substances such as sand in the center of the digestion tank 1, so as to avoid the problems of equipment wear, maintenance and replacement caused by mechanical stirring. After the heavy substances are effectively pressed into the sedimentation tank 21 by the sand discharge pipe 22, the hydraulic speed is greatly reduced, so as to facilitate the separation of the heavy substances after settling. Therefore, the system can realize continuous operation, avoids the accumulation of sand, chili seeds and pepper seeds in the bottom pipeline to form a blockage, and uses the hydraulic circulation to replace the mechanical stirring, so that the advantages are obvious.

[0056] The specific implementation manner of the utility model described above does not constitute a limitation on the protection scope of the utility model. Any other corresponding changes and modifications made according to the technical concept of the utility model should be included in the protection scope of the utility model claim.

Claims

1. A kitchen anaerobic fermentation system, characterized by, The kitchen waste anaerobic fermentation system comprises: a digestion tank; and a sand removal assembly comprising a settling tank, a sand discharge pipe, a water delivery pipe and a circulating pump, the settling tank having a settling area and a collecting area, the settling area being located at the bottom of the settling tank, the collecting area being located above the settling area, the sand discharge pipe being connected to the digestion tank and the settling tank, and the connection between the sand discharge pipe and the digestion tank being located at the middle of the bottom of the digestion tank, the water delivery pipe being connected to the settling tank and the digestion tank, and the connection between the water delivery pipe and the settling tank being located at the collecting area, the circulating pump being arranged in the water delivery pipe.

2. The kitchen anaerobic fermentation system according to claim 1, wherein, The bottom wall of the digestion tank is inclined downward from the periphery to the middle; The connection between the sand discharge pipe and the digestion tank is located at the middle of the bottom of the digestion tank.

3. The kitchen anaerobic fermentation system of claim 2, wherein, The sand discharge pipe has a sand discharge section extending into the digestion tank, the sand discharge section being located at the bottom of the digestion tank and extending from the side wall of the digestion tank to the middle, and being spaced apart from the bottom wall of the digestion tank.

4. The kitchen anaerobic fermentation system of claim 3, wherein, The kitchen waste anaerobic fermentation system further comprises a plurality of support frames, the plurality of support frames being spaced apart along the extension direction of the sand discharge section, each support frame being mounted to the bottom wall of the digestion tank and connected to the sand discharge section.

5. The kitchen anaerobic fermentation system of claim 1, wherein, The water delivery pipe comprises a flow guide pipe and a plurality of stirring pipes, the flow guide pipe being connected to the settling tank and the connection between the flow guide pipe and the settling tank being located at the collecting area, and the flow guide pipe partially surrounding the periphery of the digestion tank, each stirring pipe being connected to the flow guide pipe and spaced apart along the circumferential direction of the digestion tank, and each stirring pipe being further connected to the digestion tank; The circulating pump is arranged in the flow guide pipe.

6. The kitchen anaerobic fermentation system of claim 5, wherein, The water delivery pipe further comprises a plurality of stirring valves, each stirring valve being arranged in a corresponding stirring pipe.

7. The kitchen anaerobic fermentation system according to any one of claims 1 to 6, wherein, The inner wall of the digestion tank is cylindrically arranged; The connection between the water delivery pipe and the digestion tank is tangent to the inner wall of the digestion tank.

8. The kitchen anaerobic fermentation system of claim 1, wherein, The connection between the water delivery pipe and the digestion tank is located at the bottom of the digestion tank.

9. The kitchen anaerobic fermentation system of claim 1, wherein, The settling tank is inclined, the connection between the sand discharge pipe and the settling tank being located above the collecting area and adjacent to the side wall below the settling tank.

10. The kitchen anaerobic fermentation system of claim 1, wherein, The sand removal assembly further comprises a waste discharge pipe, a waste discharge tank and a waste discharge valve, the waste discharge pipe being connected to the settling tank and the waste discharge tank, and the connection between the waste discharge pipe and the settling tank being located at the settling area, the waste discharge valve being arranged in the waste discharge pipe.

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