Out-pool stirring equipment of anaerobic biochemical reactor

Abstract

The utility model relates to the technical field of environmental protection, and particularly discloses out-pool stirring equipment of an anaerobic biochemical reactor. Comprising an outer tank body and an inner tank body, the inner tank body is arranged in the outer tank body through the opening, and the inner tank body and the bottom of the outer tank body are sealed after being jointed; a detachable top cover is arranged at the top of the inner tank body; a bearing seat and a stirring mechanism arranged in the bearing seat are arranged on the top cover; the stirring mechanism comprises a stirring shaft and a stirring piece; the stirring shaft is at least provided with a pair of stirring pieces arranged at intervals, and one stirring piece is arranged at the bottom of the stirring shaft; the inner tank body is hollow, and the overlapped part in the inner tank body and the outer tank body is a reaction cavity; the stirring mechanism extends into the reaction cavity from the top cover; a water inlet is formed in the top cover and is communicated with the reaction cavity. Through the stirring mechanism, the wastewater treatment efficiency and quality are remarkably improved, and the adaptability and maintenance convenience of the equipment are enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of environmental protection, in particular to an external stirring device for an anaerobic biochemical reactor tank. Background Art

[0002] In the important environmental protection process of anaerobic biochemical treatment, the water distribution and stirring device plays an indispensable role. This treatment method has extremely strict requirements for equipment, and the water distribution and stirring device is a key piece of equipment. However, the traditional water distributor has many problems in actual application, such as uneven water distribution, poor controllability, and low automatic control ability. These problems not only seriously affect the anaerobic treatment effect of sewage, but also may cause the effluent water quality not to meet the specified standards, posing a huge challenge to environmental protection. Improving the efficiency and quality of anaerobic sewage treatment not only helps to improve the environmental situation in our country, but also promotes the development of our country's environmental protection cause. Therefore, it is particularly important to develop a new type of anaerobic water distribution and stirring device. This device needs to overcome the various defects of the traditional water distributor, achieve uniform water distribution, improve controllability, and enhance the automatic control ability, so as to ensure the anaerobic treatment effect of sewage and make the effluent water quality meet the standards. Anaerobic biochemical treatment has an important position in the environmental protection field of our country, and the water distribution and stirring device is the key in this process. It is not difficult to develop an efficient and high-quality anaerobic water distribution and stirring device. This will help to improve the anaerobic treatment effect of sewage in our country and contribute to environmental protection and water quality improvement.

[0003] In the patent "An integrated anaerobic biochemical reactor" (publication number CN212559632U, hereinafter referred to as the prior art 1), an anaerobic biochemical reactor is disclosed. The prior art 1 provides an integrated anaerobic biochemical reactor, which includes a device body, a three-phase separator, a water distributor, and a sludge lift pipe. A sludge lift pipe is provided at the bottom of the device body, which can lift the anaerobic granular sludge and fillers at the bottom of the device body to the three-phase separator at the top. After air discharge, the anaerobic granular sludge and fillers are regenerated in the three-phase separator and then redistributed to the upper layer of the anaerobic granular sludge, realizing the cyclic regeneration of the anaerobic granular sludge, improving the impact resistance of the anaerobic granular sludge to highly toxic wastewater, and solving the problem of poor treatment effect of the anaerobic reactor.

[0004] In the prior art 1, the sewage is mixed by setting a three-phase separator. However, there is a problem of uneven water distribution in setting the three-phase separator in the prior art 1, which will cause uneven mixing of the wastewater inside the reactor and insufficient reaction. There are also problems such as poor controllability and low automatic control ability, which not only affect the anaerobic treatment effect of sewage, but also may cause the effluent water quality not to meet the standards. Summary of the Utility Model

[0005] In view of this, an embodiment of the present utility model provides an external stirring device for an anaerobic biochemical reactor to solve the problem that the reaction of wastewater in the existing reactor is insufficient, resulting in the possible non-compliance of the effluent quality.

[0006] An embodiment of the present utility model provides an external stirring device for an anaerobic biochemical reactor, including an outer tank and an inner tank; the top of the outer tank is provided with an opening and is hollow inside; the inner tank is arranged inside the outer tank through the opening, and the inner tank and the bottom of the outer tank are hermetically arranged after being joined; the top of the inner tank is provided with a detachable top cover; the top cover is provided with a bearing seat and a stirring mechanism arranged in the bearing seat; the stirring mechanism includes a stirring shaft and a stirring member; at least a pair of stirring members arranged at intervals are provided on the stirring shaft, and one of the stirring members is arranged at the bottom of the stirring shaft; the inner tank is hollow inside, and the overlapping part of the inner tank and the outer tank is a reaction chamber; the stirring mechanism extends from the top cover to the reaction chamber; the top cover is provided with a water inlet, and the water inlet is communicated with the reaction chamber.

[0007] Preferably, at least a pair of fasteners are provided on the outside of the outer tank; the fasteners clamp the inner tank and limit the position of the inner tank.

[0008] Preferably, at least two pairs of mounting members are further provided on the outside of the outer tank; the outer tank is installed and its position is defined by providing at least two pairs of the mounting members.

[0009] Preferably, a water outlet is provided at the bottom of the outer tank; a water distribution mechanism is provided at the water outlet; the water distribution mechanism includes a drainage pipe and a water outlet pipe.

[0010] Preferably, the inner tank is a cylinder with a through interior, one end of the cylinder is provided with a connecting flange, and the top cover is fixedly connected to the cylinder through the connecting flange; the top cover and the flange are fixedly connected by a plurality of bolts.

[0011] Preferably, a stirring motor is provided on the top of the top cover; the stirring motor is in transmission connection with the stirring shaft; the stirring motor is fixedly arranged on the top of the bearing seat.

[0012] Preferably, a sealing member is provided at the opening of the outer tank; after the inner tank and the outer tank are joined, the opening and the outer wall of the outer tank are hermetically arranged.

[0013] Preferably, a first connecting pipe, a second connecting pipe and a third connecting pipe are further provided on the top cover; the first connecting pipe, the second connecting pipe and the third connecting pipe are all communicated with the reaction chamber and are hermetically arranged.

[0014] Preferably, the second connecting pipe is provided with electrode rods; the electrode rods include a first electrode rod and a second electrode rod; the first electrode rod and the second electrode rod are respectively set as the anode and the cathode.

[0015] Preferably, the water outlet pipe is arranged in a ring shape, and a plurality of water inlet holes are provided at the top of the water outlet pipe, and the water inlet holes are communicated with the reaction chamber; the drain pipe is communicated with the bottom of the water outlet pipe and is provided with a water outlet valve.

[0016] The anaerobic biochemical reactor external stirring device provided by the present utility model has the following beneficial effects:

[0017] Through this setting, it ensures the all-round and multi-level stirring of the wastewater in the reaction chamber. The anaerobic biochemical reactor external stirring device can effectively promote the mixing and mass transfer of reactants in the reaction chamber and improve the reaction efficiency. Since the stirring mechanism is located at the top of the inner tank body, the stirring shaft passes through the top cover and extends into the reaction chamber, so the stirring member can directly act on the reactants. This stirring method effectively avoids the problems of local dead zones or uneven mixing that may exist in traditional reactors, enabling the pollutants in the wastewater to come into contact and react more fully with the microbial community. At least a pair of stirring members are arranged at intervals on the stirring shaft, and one of the stirring members is arranged at the bottom of the stirring shaft, which can ensure that the stirring members form an up-and-down circulating flow in the reaction chamber, so that the reactants can be fully mixed in the vertical direction. At the same time, since the stirring members are arranged at intervals, the resistance during stirring can be reduced and the energy consumption can be lowered. Description of the Drawings

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required to be used in the embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to these drawings, and these are all within the protection scope of the present utility model.

[0019] Figure 1 is a schematic structural diagram of an anaerobic biochemical reactor external stirring device;

[0020] Figure 2 is a schematic internal structure diagram of an anaerobic biochemical reactor external stirring device;

[0021] Figure 3 is a schematic structural diagram of the top cover and the stirring mechanism of an anaerobic biochemical reactor external stirring device;

[0022] Figure 4 is a schematic plan view of the top cover and the stirring mechanism of an anaerobic biochemical reactor external stirring device;

[0023] Figure 5It is a schematic structural diagram of a water distribution mechanism of an anaerobic biochemical reactor's out-of-tank stirring device;

[0024] Figure 6 It is a schematic structural diagram of an electrode rod;

[0025] Parts and numbers in the figure:

[0026] 100 - outer tank body, 120 - fastener, 130 - mounting part, 140 - water outlet, 150 - water distribution mechanism, 151 - drainage pipe, 152 - water outlet pipe, 153 - water inlet hole, 154 - water outlet valve, 160 - seal;

[0027] 200 - inner tank body, 210 - reaction chamber, 220 - connecting flange, 230 - bolt;

[0028] 300 - top cover, 310 - bearing seat, 320 - stirring mechanism, 321 - stirring shaft, 323 - stirring part, 330 - water inlet, 340 - stirring motor, 351 - first connecting pipe, 352 - second connecting pipe, 353 - third connecting pipe, 360 - electrode rod, 361 - first electrode rod, 362 - second electrode rod. Specific implementation method

[0029] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or sequence between these entities or operations. In the description of the present utility model, it should be understood that the orientation or positional relationships indicated by terms such as "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation on the present utility model. Moreover, the terms "include", "comprise" or any other variation thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, the elements defined by the statement "including..." do not exclude the existence of additional identical elements in the process, method, article or device including the said elements. If there is no conflict, the embodiments of the present utility model and the various features in the embodiments may be combined with each other, and all are within the protection scope of the present utility model.

[0030] Embodiment 1

[0031] Please refer to Figure 1 , the embodiments of the present utility model provide an external stirring device for an anaerobic biochemical reactor. In a special sewage treatment system such as an anaerobic biochemical reactor, there are some significant technical defects in the traditional water distributors that are widely used at present. First of all, due to the limitations in the design and manufacture of the water distributor, its ability to distribute water is uneven, with too much water distributed in some areas and significantly insufficient in some areas. This uneven water distribution directly affects the full contact and reaction between anaerobic microorganisms and sewage, and thus affects the efficiency of the entire anaerobic treatment process. The traditional water distributor also performs poorly in terms of controllability and cannot be flexibly adjusted according to the actual sewage treatment requirements, which undoubtedly limits the control ability of the operator over the treatment process. Moreover, due to the lack of an effective automatic control system, the traditional water distributor often cannot automatically adjust to the optimal working state when facing a complex and changeable sewage treatment environment, thereby reducing the self-adjusting ability and anti-interference ability of the entire system. These problems not only seriously affect the effect of the anaerobic biochemical reactor in treating sewage, but may also lead to the treated water quality not meeting the relevant environmental protection standards, posing a huge challenge to environmental protection work.

[0032] Please refer to Figure 1 An anaerobic biochemical reactor external stirring device, which is characterized in that it consists of two parts, an outer tank 100 and an inner tank 200. These two parts cooperate closely to jointly form an efficient reaction setup. The operating principle of this device is that through the combination of the outer tank 100 and the inner tank 200, the stirring process is carried out outside the tank, thereby optimizing the biochemical reaction process inside the reactor. This design not only improves the reaction efficiency but also makes the maintenance and operation of the device more convenient. This anaerobic biochemical reactor external stirring device forms an efficient and stable reaction environment through the unique combination of the outer tank 100 and the inner tank 200.

[0033] Please refer to Figure 2 Figure 2

[0034] Please refer to Figure 2 Figure 2

[0035] Please refer to Figure 1 and Figure 3, a detachable top cover 300 is provided at the top of the inner tank body 200; a bearing seat 310 and a stirring mechanism 320 disposed within the bearing seat 310 are provided on the top cover 300; the inner tank body 200 is a closed container, and its top is designed with a detachable top cover 300. The function of this top cover 300 is to facilitate the cleaning and maintenance of the inner tank body 200. On the top cover 300, a bearing seat 310 is designed. The bearing seat 310 is an important component for supporting and fixing the stirring mechanism 320. The stirring mechanism 320 is installed within the bearing seat 310 and is responsible for stirring and mixing materials within the inner tank body 200.

[0036] The stirring mechanism 320 includes a stirring shaft 321 and stirring members 323; at least a pair of stirring members 323 are provided on the stirring shaft 321 at intervals, and one of the stirring members 323 is disposed at the bottom of the stirring shaft 321.

[0037] Please refer to Figure 3 and Figure 4 , the stirring mechanism 320 is composed of a stirring shaft 321 and stirring members 323 (stirring paddles); on the stirring shaft 321, at least a pair of stirring members 323 are arranged at intervals. Among them, one of the pair of stirring members 323 is placed at the bottom of the stirring shaft 321; such a design can ensure the uniformity and stability of the stirring process, thereby improving the stirring efficiency. The function of the stirring members 323 is to push and stir the materials by rotating the stirring shaft 321, so as to achieve the effect of uniform mixing during the stirring process. As the main part of the stirring mechanism 320, the arrangement position and quantity of the stirring members 323 on the stirring shaft 321 will affect the stirring effect. Therefore, when designing the stirring mechanism 320, factors such as the quantity and position of the stirring members 323 and the rotation speed of the stirring shaft 321 need to be fully considered to ensure that the materials can be fully stirred. These stirring members 323 are driven by a motor and can produce an efficient stirring effect within the inner tank body 200. The design and installation of the entire stirring mechanism 320 are all to ensure that the materials can be fully and evenly mixed within the inner tank body 200.

[0038] Please refer to Figure 2, the interiors of the inner tank 200 and the outer tank 100 are both hollow. The overlapping part of the interiors of the inner tank 200 and the outer tank 100 is the reaction chamber 210. Both the inner tank 200 and the outer tank 100 are designed with a hollow structure, and such a design can provide a larger space for various reactions. When these two tanks overlap with each other, they jointly form an overlapping space, which is the reaction chamber 210. This reaction chamber 210 is located inside the inner tank 200 and the outer tank 100 and is the overlapping part of them, where various physical or chemical reactions can occur. This reaction chamber 210 can provide an ideal reaction environment. For example, a stable temperature, pressure, and a place for sufficient mixing of reactants. It not only improves the reaction efficiency but also increases the controllability of the reaction. Therefore, the hollow settings of the inner tank 200 and the outer tank 100 and the reaction chamber 210 formed by their overlap have a great impact on the progress of the reaction.

[0039] Please refer to Figure 1 , the stirring mechanism 320 extends from the top cover 300 into the reaction chamber 210. The top cover 300 is provided with a water inlet 330, and the water inlet 330 is communicated with the reaction chamber 210. The stirring mechanism 320 is an important part that extends from the top cover 300 into the interior of the reaction chamber 210. The top cover 300 has a special water inlet 330, and there is a direct communication channel between the water inlet 330 and the reaction chamber 210. The setting of the stirring mechanism 320 is mainly to provide sufficient mixing conditions inside the reaction chamber 210 to ensure the uniform distribution of substances in the chamber and the smooth progress of chemical reactions. Therefore, the stirring mechanism 320 naturally extends into the interior of the reaction chamber 210. In addition, through the water inlet 330 provided on the top cover 300, wastewater can be introduced into the reaction chamber 210 to be mixed with the substances in the chamber. This can not only improve the mixing efficiency but also realize the treatment and reuse of wastewater, thus achieving the purpose of environmental protection. After the wastewater enters the reaction chamber 210, by starting the stirring motor 340 to drive the stirring mechanism 320 to stir and mix the wastewater, the uniformity and controllability of water distribution are achieved, and the contact efficiency between sewage and microorganisms is improved. It also enhances the stirring effect and ensures the sufficient mixing of sludge and sewage in the reactor. The sludge stirred up by the stirring mechanism 320 is fully mixed with the sewage, which is beneficial for the sufficient contact reaction between anaerobic bacteria and organic substances in the sewage.

[0040] Please refer to Figure 1 and Figure 2, at least one pair of fasteners 120 is provided on the exterior of the outer tank 100; the fasteners 120 clamp the inner tank 200 and limit the position of the inner tank 200. At least one pair of fixing devices is designed on the surface layer of the outer tank 100; these fixing devices are responsible for applying pressure to the inner tank 200 and determining the accurate position of the inner tank 200. When the inner tank 200 is placed inside the outer tank 100 and during the wastewater stirring treatment, the inner tank 200 may vibrate, and this vibration may cause irregular displacement of the position of the inner tank 200, which may further cause damage to the sealing structure between the inner tank 200 and the outer tank 100, resulting in seal leakage. To prevent this situation from occurring and ensure the safety of operation, the fasteners 120 are used to fix the relative position between the inner tank 200 and the outer tank 100 to avoid unnecessary position restrictions and potential risks.

[0041] Please refer to Figure 1 , at least two pairs of mounting parts 130 are further provided on the exterior of the outer tank 100; the outer tank 100 is mounted and its position is defined by providing at least two pairs of the mounting parts 130. In the structural design of this equipment, the outer tank 100 is an important component, and at least two pairs of mounting parts 130 are distributed on its outer surface. The presence of these mounting parts 130 not only facilitates the installation of the equipment but also strictly defines the position of the equipment, ensuring the stability and safety of the equipment during use. When carrying out the installation work of the equipment, the operator can utilize these mounting parts 130 to firmly fix the equipment at the predetermined position, thereby ensuring the normal operation of the equipment and avoiding potential safety hazards caused by the movement of the equipment.

[0042] When the wastewater treatment in the tank is completed, the wastewater needs to be discharged. An outlet 140 is provided at the bottom of the outer tank 100; a water distribution mechanism 150 is provided at the outlet 140; the water distribution mechanism 150 includes a drainage pipe 151 and a water outlet pipe 152. During the process of completing the wastewater treatment, the next step is the crucial wastewater discharge link. For this purpose, a special outlet 140 is installed at the bottom of the outer tank 100, and this outlet 140 plays a key role. At the outlet 140, a water distribution mechanism 150 is set up, and this mechanism is mainly composed of a drainage pipe 151 and a water outlet pipe 152, which cooperate together to ensure the effective discharge of the wastewater.

[0043] Please refer to Figure 5, The working principle of this water distribution mechanism 150 is as follows: First, the wastewater inside will be introduced into the outlet pipe 152 through the drain pipe 151. The outlet pipe 152 is arranged in a ring shape, and a number of inlet holes 153 are distributed at the top. These inlet holes 153 do not exist in isolation. They are connected to the reaction chamber 210 through channels. In this way, the treated wastewater can enter the outlet pipe 152 through these inlet holes 153.

[0044] In addition, the drain pipe 151 is connected to the bottom of the outlet pipe 152, and an outlet valve 154 is set at the connection. At least two such valves are provided, one on the drain pipe 151 and the other at the bottom of the outer tank 100. In this way, both the treated wastewater and the residues that fail to enter the drain pipe 151 can be discharged by opening these two valves. By using the water distribution mechanism 150, through the drain pipe 151, the outlet pipe 152 and the outlet valve 154, the effective discharge of wastewater is achieved. This not only improves the efficiency of wastewater treatment but also ensures the smooth progress of the treatment process.

[0045] This stirring method effectively avoids the problems of local dead zones or uneven mixing that may exist in traditional reactors, enabling the pollutants in the wastewater to come into more sufficient contact and reaction with the microbial community, thereby accelerating the degradation process of pollutants. Sufficient stirring not only promotes the uniform distribution of nutrients in the wastewater but also provides a richer growth environment for microorganisms. This helps to maintain the diversity and activity of the microbial population in the reactor, enabling them to more effectively degrade various organic pollutants and improve the overall biochemical treatment efficiency. The metabolic products can be transferred and exchanged more quickly, which helps to accelerate the biochemical reaction rate and shorten the treatment cycle. At the same time, stirring can also promote the sedimentation of suspended solids in the wastewater, reduce the content of suspended solids in the effluent, and further improve the effluent quality.

[0046] Please refer to Figure 2, the inner tank body 200 is a cylinder with a through interior. One end of the cylinder is provided with a connecting flange 220, and the top cover 300 is fixedly connected to the cylinder through the connecting flange 220. The top cover 300 and the flange are fixedly connected by a number of bolts 230. The inner tank body 200 is a cylindrical container without an internal through passage. This design makes the inside of the cylinder closed, without any channels or openings passing through the cylinder. At one end of this cylinder, a connecting flange 220 is designed. This is a metal component used to connect other devices or pipes. This connecting flange 220 plays an important interface role, enabling the cylinder to be connected to other systems or devices. In addition, the top cover 300 is also an important component. It is fixedly connected to the cylinder through the connecting flange 220. This connection method ensures a tight seal between the top cover 300 and the cylinder, preventing any substances or gases from leaking. To ensure the stability and reliability of this connection, the top cover 300 and the flange are fixedly connected by a number of bolts 230. These bolts 230 play a fastening role, tightly connecting the top cover 300 and the flange together, ensuring the safe operation of the entire system.

[0047] Please refer to Figure 1 , a stirring motor 340 is provided on the top of the top cover 300. The stirring motor 340 is in driving connection with the stirring shaft 321. The stirring motor 340 is fixedly arranged on the top of the bearing seat 310. A stirring motor 340 is installed on the top of the top cover 300. The stirring motor 340 and the stirring shaft 321 are connected together through a transmission mechanism, enabling the stirring motor 340 to drive the stirring shaft 321 to perform a stirring operation. To ensure the stable operation of the stirring motor 340, the stirring motor 340 is firmly fixed on the top of the bearing seat 310. In this way, not only can the safety of the stirring motor 340 be guaranteed, but also the transmission between the stirring motor 340 and the stirring shaft 321 can be made smoother, improving the overall stirring efficiency.

[0048] Please refer to Figure 1 , a seal 160 is provided at the opening of the outer tank body 100. After the inner tank body 200 is joined with the outer tank body 100, the opening is hermetically sealed with the outer wall of the outer tank body 100. At the opening part of the outer tank body 100, there is a seal 160. This seal 160 can effectively seal the opening, preventing the contents from leaking and also preventing external substances from entering. When the inner tank body 200 is tightly combined with the outer tank body 100, this opening forms a tight closed state with the outer wall of the outer tank body 100 through the seal 160, ensuring the airtightness and waterproofness of the entire container. Such a design improves the use safety of the container, thus providing a more reliable space for the treatment and reaction of wastewater.

[0049] Please refer to Figure 3 and Figure 6 , a first connecting pipe 351, a second connecting pipe 352 and a third connecting pipe 353 are further provided on the top cover 300; the first connecting pipe 351, the second connecting pipe 352 and the third connecting pipe 353 are all communicated with the reaction chamber 210 and are hermetically arranged. An electrode rod 360 is provided on the second connecting pipe 352; the electrode rod 360 includes a first electrode rod 361 and a second electrode rod 362; the first electrode rod 361 and the second electrode rod 362 are respectively set as the anode and the cathode. The first connecting pipe 351 and the third connecting pipe 353 can be through holes for adding materials inside. When not in use, they are closed. The second connecting pipe 352 is provided with the electrode rod 360 to perform an electrolysis effect on the wastewater.

[0050] These through holes are all closely connected to the reaction chamber 210 and at the same time achieve sealing. This design not only ensures the integrity of the reaction chamber 210 but also facilitates the entry and exit of substances. In the design of the second connecting pipe 352, the electrode rod 360 is provided, making the second connecting pipe 352 not just an ordinary through hole but also an electrolysis device. This electrode rod 360 consists of two electrode rods 360, namely the first electrode rod 361 and the second electrode rod 362, which respectively act as the anode and the cathode and work together to perform electrolysis treatment on the wastewater to achieve the purpose of purifying the wastewater. The main functions of the first connecting pipe 351 and the third connecting pipe 353 are to add materials into the reaction chamber 210. When materials do not need to be added, they can be closed to prevent the leakage of materials and the intrusion of external substances, ensuring the purity and safety of the reaction. Such a design not only makes full use of the space of the top cover 300 but also makes the functions of the entire device more perfect, greatly improving the efficiency and practicality of the device.

[0051] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An external stirring device for an anaerobic biochemical reactor, characterized in that: The invention comprises an outer tank body (100) and an inner tank body (200); the outer tank body (100) is provided with an opening at the top and is hollow inside; the inner tank body (200) is arranged inside the outer tank body (100) through the opening, and the inner tank body (200) is sealed after being joined to the bottom of the outer tank body (100); and a detachable top cover (300) is provided at the top of the inner tank body (200); The top cover (300) is provided with a bearing seat (310) and a stirring mechanism (320) disposed in the bearing seat (310); the stirring mechanism (320) comprises a stirring shaft (321) and a stirring member (323); the stirring shaft (321) is provided with at least one pair of stirring members (323) disposed at intervals, wherein one stirring member (323) is disposed at the bottom of the stirring shaft (321); The inner tank body (200) is hollow inside, and the overlapping part of the inner tank body (200) and the outer tank body (100) is a reaction chamber (210); the stirring mechanism (320) extends from the top cover (300) into the reaction chamber (210); the top cover (300) is provided with a water inlet (330), and the water inlet (330) is in communication with the reaction chamber (210).

2. The external stirring device of an anaerobic biochemical reactor according to claim 1, characterized in that: At least one pair of fasteners (120) is provided on the outside of the outer tank body (100); the fasteners (120) clamp the inner tank body (200) and limit the position of the inner tank body (200).

3. The external stirring device of an anaerobic biochemical reactor according to claim 1, characterized in that: At least two pairs of mounting members (130) are also provided on the outside of the outer tank body (100); the outer tank body (100) is installed and its position is limited by providing at least two pairs of mounting members (130).

4. The external stirring device of an anaerobic biochemical reactor according to claim 1, characterized in that: The bottom of the outer tank body (100) is provided with a water outlet (140); the water outlet (140) is provided with a water distribution mechanism (150); the water distribution mechanism (150) comprises a drainage pipe (151) and a water outlet pipe (152).

5. The external stirring device of an anaerobic biochemical reactor according to claim 1, characterized in that: The inner tank body (200) is a cylinder with a through-hole inside, one end of the cylinder is provided with a connecting flange (220), and the top cover (300) is fixedly connected to the cylinder via the connecting flange (220); the top cover (300) and the flange are fixedly connected via a plurality of bolts (230).

6. The external stirring device of the anaerobic biochemical reactor according to claim 5, characterized in that: A stirring motor (340) is provided on the top of the top cover (300); the stirring motor (340) is in transmission connection with the stirring shaft (321); and the stirring motor (340) is fixedly arranged on the top of the bearing seat (310).

7. The external stirring device of an anaerobic biochemical reactor according to claim 1, characterized in that: A sealing member (160) is provided at the opening of the outer tank body (100); after the inner tank body (200) is joined to the outer tank body (100), the opening and the outer wall of the outer tank body (100) are sealed.

8. The external stirring device of an anaerobic biochemical reactor according to claim 1, characterized in that: The top cover (300) is also provided with a first connecting tube (351), a second connecting tube (352) and a third connecting tube (353); the first connecting tube (351), the second connecting tube (352) and the third connecting tube (353) are all connected to the reaction chamber (210) and are arranged in a sealed manner.

9. The external stirring device of an anaerobic biochemical reactor according to claim 8, characterized in that: The second connecting tube (352) is provided with an electrode rod (360); the electrode rod (360) comprises a first electrode rod (361) and a second electrode rod (362); the first electrode rod (361) and the second electrode rod (362) are respectively arranged as an anode and a cathode.

10. The external stirring device of an anaerobic biochemical reactor according to claim 4, characterized in that: The water outlet pipe (152) is arranged in a ring shape, and a plurality of water inlet holes (153) are provided at the top of the water outlet pipe (152), and the water inlet holes (153) are connected to the reaction chamber (210); the drainage pipe (151) is connected to the bottom of the water outlet pipe (152) and is provided with a water outlet valve (154).

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