Anaerobic fermentation tank sand removal device

Abstract

The utility model relates to anaerobic fermentation tank technical field, and disclose a kind of anaerobic fermentation tank sand removal device, including tank body, still including sand removal mechanism, the sand removal mechanism is arranged in the inside of tank body and is used to carry out efficient removal to gravel accumulation layer;Wherein, the sand removal mechanism includes two arc scrapers and two inclined pipes, the arc scraper can rotate along the axis of tank body with inclined pipe, there is material guiding gap between the arc scraper and tank body, the outside of inclined pipe is provided with a group of branch pipes;Rotary scraper is matched with moving branch pipe, double-layer sand removal operation of physical scraping and water source injection is carried out, effectively drive over-thick gravel layer movement, and in sand removal process, it can guarantee branch pipe injection intensity, reduce gravel residual phenomenon, reduce cleaning dead angle.

Description

Technical Field

[0001] This utility model relates to the field of anaerobic fermentation tank technology, specifically to a sand removal device for anaerobic fermentation tanks. Background Technology

[0002] Anaerobic digesters are key equipment in the waste treatment process of environmental engineering. When the raw materials for fermentation enter the anaerobic digester, solid particles such as sand, shells and glass will be introduced. These sand and gravel will be deposited on the bottom surface of the anaerobic digester, forming a sand and gravel accumulation layer, which will affect subsequent operations. Therefore, a sand removal device is required.

[0003] According to the Chinese patent "A Sand Removal Device for Anaerobic Fermentation Tank" (authorization announcement number CN223118435U), the device works by delivering a solution into a sand removal pipe. The solution enters the tank through the sand removal pipe and forms a water flow that adheres to the inner bottom surface of the tank. This water flow drives the solid particles that fall onto the bottom surface of the tank to move until they are discharged along with the solution in the tank. Compared with the scraping method, this method solves the problem of solid particles depositing on the bottom surface of the tank from the source and does not damage the tank.

[0004] However, the above methods are prone to the following defects in actual use: the fixed nozzle design may result in different spray pressures in the cleaning area, which may lead to cleaning dead spots. Furthermore, for excessively thick sand and gravel deposits, relying solely on nozzle spraying is insufficient to achieve the desired cleaning effect, and sand and gravel residue may remain. Utility Model Content

[0005] The purpose of this invention is to provide a sand removal device for anaerobic fermenters to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an anaerobic fermenter sand removal device, comprising a tank body and a sand removal mechanism, wherein the sand removal mechanism is disposed inside the tank body and is used to efficiently remove sand and gravel accumulation layers; wherein the sand removal mechanism comprises two arc-shaped scrapers and two inclined tubes, the arc-shaped scrapers and inclined tubes are rotatable along the axis of the tank body, there is a material guiding gap between the arc-shaped scrapers and the tank body, and a set of branch pipes is disposed on the outer side of the inclined tubes.

[0007] Preferably, the tank is equipped with a stirring shaft inside, one end of which is fixedly mounted with an annular box, one side of the arc-shaped scraper is mounted on the annular box, and one end of the inclined tube is connected to the annular box.

[0008] Preferably, the branch pipe is inclined, and the discharge port of the branch pipe is close to the discharge port on the tank.

[0009] Preferably, a water pump is installed on the outside of the tank, and both the output and input ends of the water pump are equipped with conduits, one end of which passes through the tank and extends into the interior of the annular box.

[0010] Preferably, the annular box is rotatably connected to a rotating ring, which is fixedly sleeved on the outside of one of the conduits.

[0011] Preferably, a guide hopper is fixedly installed on the inner wall of the tank, and the guide hopper is located above the annular box.

[0012] Preferably, the two arc-shaped scrapers and the two inclined tubes are arranged in a ring-shaped staggered pattern along the axis of the tank.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model uses an arc-shaped scraper and a branch pipe. During the rotation of the arc-shaped scraper, there is no contact with the inner wall of the tank. It physically scrapes away the thick sand and gravel layer without any wear between the scraper and the tank. Then, water is sprayed through the branch pipe to clean the thin sand and gravel layer after scraping. This ensures the cleaning effect of the drive and avoids the possibility of sand and gravel residue. This invention, by setting up an annular box and an inclined branch pipe, allows the annular box to drive the branch pipe to move continuously during the sand removal process, thus fully covering the sand removal area, ensuring stable spray pressure acting on the sand and gravel layer, and reducing cleaning dead corners. Attached Figure Description

[0014] Figure 1 A schematic diagram of a preferred embodiment of the anaerobic fermenter sand removal device provided by this utility model; Figure 2 A cross-sectional view of the tank and the annular box provided by this utility model; Figure 3 This is a schematic diagram of the structure of the water pump and the annular box provided by this utility model; Figure 4 for Figure 3 A magnified view of A in the middle.

[0015] In the diagram: 100, tank body; 110, annular box; 111, rotating ring; 120, water pump; 121, conduit; 130, feed hopper; 200, sand removal mechanism; 210, arc-shaped scraper; 220, inclined pipe; 221, branch pipe. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Please see Figures 1-4 As shown, an anaerobic fermenter sand removal device includes a tank body 100 and a sand removal mechanism 200. The sand removal mechanism 200 is disposed inside the tank body 100 and is used to efficiently remove sand and gravel accumulation layers. The sand removal mechanism 200 includes two arc-shaped scrapers 210 and two inclined tubes 220. The arc-shaped scrapers 210 and the inclined tubes 220 can rotate along the axis of the tank body 100. There is a material guiding gap between the arc-shaped scrapers 210 and the tank body 100. A set of branch pipes 221 is provided on the outside of the inclined tubes 220.

[0018] During the sand removal operation, the arc-shaped scraper 210 and the inclined pipe 220 are driven to rotate along the axis of the tank body 100. During the rotation, the arc-shaped scraper 210 comes into contact with the excessively thick sand and gravel layer and performs physical scraping. At this time, the thickness of the sand and gravel layer is reduced. Then, the branch pipe 221 on the inclined pipe 220 discharges water to spray and clean the sand and gravel layer. Afterward, the water and sand and gravel are discharged normally through the discharge port on the tank body 100. It should be noted that by adopting the setting of the material guide gap, the arc scraper 210 and the tank 100 are in a non-contact state, which prevents wear on the coating of the inner wall of the tank 100. In addition, the size of the arc scraper 210 can be adjusted according to the size of the tank 100 and the size of the discharge port, so as to effectively cover the accumulation area of ​​the inner bottom wall of the tank 100. The tilt angle of the inclined tube 220 can be adjusted according to the specifications and dimensions of the tank 100 and the material guiding curvature of its inner bottom wall. Tank 100 is a conventional fermentation reactor, which belongs to existing mature technology and will not be described in detail here.

[0019] The tank 100 is equipped with a stirring shaft. One end of the stirring shaft is fixedly installed with an annular box 110. One side of the arc-shaped scraper 210 is installed on the annular box 110. One end of the inclined tube 220 is connected to the annular box 110.

[0020] The rotation of the stirring shaft can be used to drive the annular box 110, thereby driving the arc-shaped scraper 210 and the inclined tube 220 to follow the movement and complete the corresponding cleaning operation.

[0021] It should be noted that a stirring frame is provided on the outside of the stirring shaft (not shown in the figure), and a drive motor that is connected to the stirring shaft is provided on the tank body 100. The inner side of the annular box 110 is provided with a crossbar that connects to the stirring shaft.

[0022] Branch pipe 221 is set at an angle, and the discharge port of branch pipe 221 is close to the discharge port on tank 100.

[0023] Branch pipe 221 is inclined and close to the discharge port, which can form a spiral water flow in the inner bottom wall area of ​​tank 100 during water spraying, increase the contact range between water and sand, and assist in the rapid discharge of cleaned sand and water.

[0024] A water pump 120 is installed on the outside of the tank 100. Both the output and input ends of the water pump 120 are equipped with conduits 121. One end of one of the conduits 121 passes through the tank 100 and extends into the interior of the annular box 110.

[0025] Users can connect one of the conduits 121 to an external water source in advance. After the fermentation tank is used, when sand removal is required, the water pump 120 is started to introduce external water into the annular box 110 along the corresponding conduit 121 for subsequent spray cleaning. It should be noted that a one-way valve is provided on the outside of one of the conduits 121. This design can reduce the accidental backflow of the solution in the tank 100.

[0026] The annular box 110 is rotatably connected to a rotating ring 111, which is fixedly sleeved on the outside of one of the conduits 121.

[0027] The rotating ring 111 can support the annular box 110 without affecting its normal rotation.

[0028] It should be noted that two sealing rings are provided between the rotating ring 111 and the annular box 110, which reduces the occurrence of liquid leakage without affecting the rotation of the annular box 110.

[0029] A guide hopper 130 is fixedly installed on the inner wall of the tank 100, and the guide hopper 130 is located above the annular box 110.

[0030] By utilizing the guide hopper 130, the upper guide area can guide the material in the tank 100, reducing the accumulation of material on the annular box 110. At the same time, it can block the rotation gap between the annular box 110 and the tank 100, reducing the occurrence of accidental material seepage.

[0031] Two arc-shaped scrapers 210 and two inclined tubes 220 are arranged in a ring-shaped staggered pattern along the axis of the tank body 100.

[0032] This allows for alternating physical scraping and water jet cleaning, improving the sand removal effect.

[0033] Working principle: During operation, the raw materials for fermentation are first placed into the anaerobic tank 100. The drive motor drives the stirring shaft to rotate, which in turn drives the stirring rack to rotate, stirring the raw materials in the anaerobic tank 100 and improving the efficiency of raw material fermentation. Then the drive motor stops and the corresponding fermentation operation is carried out. After the fermentation process is completed, when sand and gravel accumulate inside the tank 100, the drive motor is restarted. Then, the stirring shaft drives the annular box 110 to move, causing the arc-shaped scraper 210 to move in accordance with the inclined tube 220. During the movement, the water pump 120 is started to draw external water through the branch pipe 221 on the inclined tube 220. The arc-shaped scraper 210 physically scrapes away the sand and gravel layer, and the water spray from the branch pipe 221 assists in cleaning. Then, the sand and gravel, along with the water, are discharged through the discharge port.

[0034] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A sand removal device for an anaerobic fermenter, comprising a tank body (100), characterized in that, Also includes: A sand removal mechanism (200) is provided inside the tank body (100) and is used to efficiently remove sand and gravel accumulation layers; The sand removal mechanism (200) includes two arc-shaped scrapers (210) and two inclined tubes (220). The arc-shaped scrapers (210) and the inclined tubes (220) can rotate along the axis of the tank (100). There is a material guiding gap between the arc-shaped scrapers (210) and the tank (100). A set of branch pipes (221) is provided on the outside of the inclined tubes (220).

2. The sand removal device for an anaerobic fermenter according to claim 1, characterized in that: The tank (100) is equipped with a stirring shaft inside. One end of the stirring shaft is fixedly installed with an annular box (110). One side of the arc-shaped scraper (210) is installed on the annular box (110). One end of the inclined tube (220) is connected to the annular box (110).

3. The sand removal device for an anaerobic fermenter according to claim 1, characterized in that: The branch pipe (221) is inclined, and the discharge port of the branch pipe (221) is close to the discharge port on the tank (100).

4. The sand removal device for an anaerobic fermenter according to claim 2, characterized in that: A water pump (120) is installed on the outside of the tank (100). Both the output and input ends of the water pump (120) are equipped with conduits (121), one end of which passes through the tank (100) and extends into the interior of the annular box (110).

5. The sand removal device for an anaerobic fermenter according to claim 4, characterized in that: The annular box (110) is rotatably connected to a rotating ring (111), which is fixedly sleeved on the outside of one of the conduits (121).

6. The sand removal device for an anaerobic fermenter according to claim 2, characterized in that: A guide hopper (130) is fixedly installed on the inner wall of the tank (100), and the guide hopper (130) is located above the annular box (110).

7. The sand removal device for an anaerobic fermenter according to claim 1, characterized in that: The two arc-shaped scrapers (210) and the two inclined tubes (220) are arranged in a ring-shaped staggered pattern along the axis of the tank body (100).

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