Stirring blade and stirring device

Abstract

The application provides a stirring blade and a stirring device, the stirring blade comprises a blade, a connecting shaft and a protective plate, the blade is connected to the connecting shaft, the blade has a stirring part, the protective plate is connected to the connecting shaft, and the protective plate is located at the top of the blade and is used for shielding at least one side of the blade; the stirring part comprises a straight plate section, one side of the straight plate section is connected to the connecting shaft, and the protective plate is located at the top of the straight plate section. The stirring blade provided by the application solves the technical problem that the motor rotating shaft and the blade of the stirring device are wound with a large amount of sundries in the related art, so that the device cannot normally operate.

Description

Technical Field

[0001] This application belongs to the field of waste treatment technology, and more specifically, relates to a stirring blade and stirring device that can solve the problem of treating and purifying feces in septic tanks. Background Technology

[0002] Septic tanks are where human feces and urine are stored, along with large amounts of toilet paper, hair, and other household debris. Over time, solid and liquid substances accumulate in the septic tank, causing its volume to decrease. If not cleaned promptly, the feces and sludge will overflow, producing a foul odor and polluting the environment.

[0003] In related technologies, mixing equipment is used to crush debris in septic tanks to reduce the amount of solid matter in the septic tanks. However, the centrifugal force generated by the mixing equipment during operation can cause a large amount of debris to become entangled on the motor shaft and blades, thereby increasing the motor load and causing the equipment to malfunction. Utility Model Content

[0004] The purpose of this application is to provide a stirring blade and a stirring device to solve the technical problem in the related art that the motor shaft and blades of the stirring equipment will be entangled with a large amount of debris, causing the equipment to malfunction.

[0005] To achieve the above objectives, the technical solution adopted in this application is as follows: a stirring blade is provided, including a blade, a connecting shaft and a protective plate. The blade is connected to the connecting shaft and has a stirring part. The protective plate is connected to the connecting shaft and is located at the top of the blade and is used to shield at least one side of the blade. The stirring part includes a straight plate section, one side of which is connected to the connecting shaft, and the protective plate is located at the top of the straight plate section.

[0006] In one alternative embodiment, the protective plate extends from the top of the straight section toward one side of the straight section.

[0007] In one alternative embodiment, the protective plate is bent and extended from the top of the straight plate segment toward one side of the straight plate segment.

[0008] In one alternative embodiment, the protective plate is bent into an arc shape.

[0009] In one alternative embodiment, the curvature of the protective plate is 2.43 rad to 2.97 rad.

[0010] In one alternative embodiment, the protective plate and the straight plate segment are integrally formed.

[0011] In one alternative embodiment, multiple blades are provided; the multiple blades are spaced apart circumferentially along the connecting shaft.

[0012] In one alternative embodiment, multiple blades are arranged at equal intervals along the circumference of the connecting shaft.

[0013] In one alternative embodiment, the lower edge of the straight section is inclined away from the protective plate by the connecting shaft.

[0014] Another objective of this application is to provide a stirring device, which includes a motor and the aforementioned stirring blades, with a connecting shaft fixedly connected to the output end of the motor, and the stirring portion of the blades disposed away from the output end of the motor.

[0015] The beneficial effects of the stirring blade and stirring device provided in this application are as follows: Compared with the prior art, the stirring blade in this application embodiment, by setting a blade and a protective plate, the blade is connected to the connecting shaft, and the blade is provided with a stirring part, which at least partially extends into the liquid pool and rotates in the liquid pool to form a vortex and generate centrifugal force, thereby breaking up the impurities in the liquid pool; the stirring part is set as a straight plate section, and the simple geometry of the straight plate section prevents hair, toilet paper and other debris in the liquid pool from getting tangled on the blade; the protective plate is connected to the connecting shaft, located at the top of the blade and used to cover at least one side of the blade. The liquid and impurities in the liquid pool will rise due to the centrifugal force, and the protective plate can guide the liquid and impurities to move towards the pool wall and downward, thereby preventing impurities from getting tangled on the connecting shaft; by setting the protective plate, which is located at the top of the straight plate section, the straight plate section itself can prevent debris from getting tangled, and the protective plate can also prevent debris from getting tangled on the connecting shaft, thus achieving the effect of preventing debris from getting tangled on the connecting shaft and the blade, avoiding increasing the load on the drive mechanism, and ensuring that the device can operate normally while maintaining the stirring effect. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of the stirring device provided in the embodiments of this application;

[0018] Figure 2 A front view of the stirring apparatus provided in the embodiments of this application;

[0019] Figure 3 Left view of the stirring device provided in the embodiment of this application;

[0020] Figure 4 A top view of the stirring apparatus provided in an embodiment of this application.

[0021] The following are the labeling elements in the figure:

[0022] 100-Agitator; 10-Agitator blade; 11-Blade; 111-Agitator section; 1111-Straight plate section; 12-Connecting shaft; 13-Protective plate; 21-Shaft sleeve; 22-Power cord; 30-Fixing component; 31-Mounting rod; 32-Chassis. Detailed Implementation

[0023] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0024] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0025] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0026] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0027] Septic tanks are where human feces and urine are stored, along with large amounts of toilet paper, hair, and other household debris. Over time, solid and liquid substances accumulate in the septic tank, causing its volume to decrease. If not cleaned promptly, the feces and sludge will overflow, producing a foul odor and polluting the environment. Therefore, septic tanks require regular vacuuming by sewage trucks, typically every 1-3 months, before the waste is transported to designated treatment facilities. Cities usually have multiple large-scale treatment facilities, each exceeding 100 acres, and some even exceeding 200 acres. Relevant departments invest significant financial and material resources in the management of septic tanks. In current technologies, mixing equipment is used to break up impurities in septic tanks to reduce solid matter. However, because septic tanks contain a large amount of debris such as toilet paper and hair, the centrifugal force generated by the mixing equipment during operation will push the solid matter towards the mixing equipment. This causes a large amount of debris to become entangled on the motor shaft and blades, increasing the motor load, causing deceleration, increasing current, and even burning out the motor, rendering it unusable in septic tanks.

[0028] Please refer to the following: Figures 1 to 4 The stirring blade 10 provided in the embodiments of this application will now be described. The stirring blade 10 includes a blade 11, a connecting shaft 12, and a protective plate 13. The blade 11 is connected to the connecting shaft 12 and has a stirring part 111. The protective plate 13 is connected to the connecting shaft 12 and is located at the top of the blade 11 and is used to shield at least one side of the blade 11. The stirring part 111 includes a straight plate section 1111. One side of the straight plate section 1111 is connected to the connecting shaft 12, and the protective plate 13 is located at the top of the straight plate section 1111.

[0029] A connecting shaft 12 is provided to connect the blade 11 to the connecting shaft 12, supporting and fixing the blade 11. By connecting the connecting shaft 12 to the drive mechanism, the drive mechanism can drive the blade 11 to rotate by driving the connecting shaft 12 to rotate. The blade 11 is provided with a stirring part 111, which at least partially extends into a liquid pool containing impurities. The stirring part 111 is used to break up the impurities for easier treatment or removal. The liquid pool can be a septic tank, sewage tank, or papermaking wastewater tank, etc. The length of the stirring part 111 extending into the liquid pool can be set according to the size of the liquid pool and the amount of impurities. The stirring blade of this application can be applied to stirring equipment or mixing equipment, etc.

[0030] In this application, the liquid tank is a septic tank as an example. Impurities such as feces, toilet paper, and hair exist in the septic tank. By extending the stirring part 111 of the blade 11 into the septic tank and rotating the stirring part 111, the sewage in the septic tank forms a vortex and generates centrifugal force, which breaks up the feces and toilet paper and other organic matter, reduces the impurities in the septic tank, and causes them to sink into the sewage, accelerates fermentation and dissolution, and achieves effective discharge that meets the standards. After the impurities in the septic tank are broken up, sedimentation, fermentation, and dissolution meet the standards, they are effectively discharged through the third-stage storage tank.

[0031] The protective plate 13 is connected to the connecting shaft 12 and is used to shield the top of the blade 11. The top of the blade 11 refers to the end of the blade 11 away from the stirring part 111, that is, the stirring part 111 of the blade 11 extends into the liquid pool, and the protective plate 13 is located on the surface of the liquid pool. When the stirring part 111 of the blade 11 rotates in the liquid pool, the liquid rotates with the blade 11, causing a vortex to form in the liquid pool and generating centrifugal force. This force causes the liquid and impurities to move radially outward along the blade 11. And because the liquid and impurities cannot penetrate the pool wall, they rise at the edge of the liquid pool to form a concave surface, that is, the liquid and impurities in the liquid pool move upward along the liquid pool.

[0032] At this time, by setting up a protective plate 13, which blocks at least one side of the blade 11, the material in the liquid pool is blocked. The material in the liquid pool refers to liquid and other impurities. The protective plate 13 can prevent the material in the liquid pool from moving upward. After colliding with the protective plate 13, the material in the liquid pool will move towards the pool wall and downward. The downward movement refers to the movement towards the liquid pool. This reduces the liquid and impurities that are pushed towards the pool opening by centrifugal force, and prevents impurities from getting tangled on the top of the blade 11 and the connecting shaft 12. In the septic tank, the protective plate 13 can make the feces, toilet paper, hair and other debris in the septic tank move towards the pool wall and downward, preventing the material from moving upward along the blade 11 or crossing the blade 11 and getting tangled on the connecting shaft 12, preventing increased load on the drive mechanism, ensuring the normal operation of the drive mechanism, and at the same time maintaining the crushing of impurities in the septic tank.

[0033] In some embodiments, the protective plate 13 is a straight plate that can block one or both sides of the blade 11. In other embodiments, the protective plate 13 can also be a curved plate that blocks one or both sides of the blade 11. In still other embodiments, the protective plate 13 can also be a circular plate that blocks the entire blade 11, forming a ring of protection for complete coverage. When the protective plate 13 blocks one side of the blade 11, the protective plate 13 is located on the side of the blade 11 closer to the direction of rotation. The specific dimensions of the protective plate 13 can be set according to the size of the blade 11, the rotation speed, and the nature of the impurities, as long as it can prevent substances in the liquid pool from moving away from the liquid pool.

[0034] The stirring section 111 includes a straight plate segment 1111, which is plate-shaped and extends along the height direction of the blades 11 in the tank. The straight plate segment 1111 can be a flat plate or a curved plate. The straight plate segment 1111 can extend along the axial direction of the connecting shaft 12, or can be collinear with the axial direction of the connecting shaft 12. The straight plate segment 1111 can be rectangular, square, or rhomboid, or its unfolded shape can be rectangular, square, or rhomboid. In some embodiments, the straight plate segment 1111 is rectangular. In other embodiments, the straight plate segment 1111 is rectangular and curved along the circumference of the connecting shaft 12.

[0035] like Figure 1 and Figure 2 The stirring section 111 is configured as a straight plate segment 1111, which at least partially extends into the liquid tank. This design reduces surface complexity and gaps, preventing debris such as hair and toilet paper from becoming entangled in the straight plate segment 1111. Compared to other types of blades 11 (such as spiral, finned, or blades with complex edges), the simple geometry of the straight plate segment 1111 makes it less prone to debris entanglement and accumulation. In environments such as septic tanks and sewage treatment plants, this design can significantly reduce equipment malfunctions and maintenance frequency caused by debris entanglement. Simultaneously, the straight plate segment 1111 extending into the liquid tank effectively generates strong shear forces and vortex effects, helping to better break up and disperse impurities in the liquid. For softer materials (such as toilet paper), the centrifugal force generated by the rotation of the straight plate segment 1111 can break them up and push them against the tank wall.

[0036] The straight plate segment 1111 has a simple design, is easy to manufacture, reduces production costs, and its simple structure facilitates daily inspection and maintenance. The straight plate segment 1111 can withstand greater mechanical stress without easily deforming or being damaged. Furthermore, its simple geometry helps to disperse stress and avoid localized overload. The design of the straight plate segment 1111 guides the liquid in the liquid pool to form a stable flow pattern, reducing turbulence and unnecessary energy loss. In addition, the protective plate 13 at the top prevents liquid from splashing upwards and prevents debris from getting tangled on the connecting shaft 12.

[0037] In some embodiments, the length of the leaf ranges from 20 cm to 30 cm. In other embodiments, the width of the leaf ranges from 20 cm to 45 cm.

[0038] In small septic tanks, the blades 11 are designed in three sizes: 28cm in length and 30cm in width; 28cm in length and 35cm in width; and 28cm in length and 40cm in width. The specific width of the blades 11 is set according to the size of the septic tank and the number of inhabitants. The wider the blades 11, the better the pulverizing effect. In other embodiments, the length of the blades 11 can be set to 20cm, 25cm, or 30cm, depending on the height of the septic tank opening.

[0039] In a liquid tank, impurities generally float on the surface due to buoyancy. Therefore, the blade 11 does not need to be fully submerged. At least a portion of the straight section 1111 is inserted to generate centrifugal force through agitation. The protective plate 13 is located outside the tank, blocking impurities and causing them to move towards the tank wall and downwards. The impurities are further crushed by being impacted by the vortex in the liquid. For example, in a septic tank, organic matter such as feces and paper towels floats on the surface. At least a portion of the agitator 111 of the blade 11 is inserted into the septic tank, and the protective plate 13 is positioned above it. In some embodiments, the blade 11 is designed to be 28 cm long, with the agitator 111 extending 15 cm into the septic tank, and a portion of the agitator 111 and the protective plate 13 protruding 13 cm outside the septic tank. In this application, the English abbreviation cm corresponds to centimeters.

[0040] The number of blades 11 can be one, two, or more. In some embodiments, the blade 11 is one, and the connecting shaft 12 can be connected to the middle position of the blade 11 to maintain the balance of the blade 11's rotation. Furthermore, when the blade 11 is one, the thickness of the blade 11 is set to 2 mm to 5 mm to maintain the strength of the blade 11; and the area of ​​the blade 11 can be set to be the same as the area of ​​two blades 11 to maintain the stirring effect. In other embodiments, the blade 11 is two, such as... Figure 1 Two blades 11 are symmetrically connected to both sides of the connecting shaft 12 to maintain balance.

[0041] The blade 11 can be made of stainless steel, tungsten steel or titanium alloy, etc., which are high in strength, corrosion-resistant, wear-resistant and have a long service life.

[0042] When used in a septic tank, the mixing blades 10, in conjunction with the drive mechanism, agitate and crush the materials within the septic tank. The protective plate 13, located at the top of the straight plate section 1111, prevents debris from entangled within the straight plate section itself. Furthermore, the protective plate 13 prevents debris from entangled on the connecting shaft 12, thus avoiding entanglement between the connecting shaft 12 and the blades 11, reducing the motor load, and ensuring normal operation of the device. When applied in a septic tank, it effectively crushes and decomposes feces and organic matter such as toilet paper, achieving sedimentation, fermentation, and dissolution before efficient discharge through a storage tank. This eliminates the need for vacuum trucks or other manual cleaning methods, saving labor and material costs. It also reduces the need for extensive purification facilities, decreasing the investment required by relevant financial and environmental departments, and significantly reducing treatment costs.

[0043] Compared with the prior art, the stirring blade 10 provided in this application embodiment has a blade 11 and a protective plate 13. The blade 11 is connected to the connecting shaft 12 and has a stirring part 111. The stirring part 111 extends at least partially into the liquid pool and rotates in the liquid pool to form a vortex and generate centrifugal force, thereby breaking up impurities in the liquid pool. The stirring part 111 is set as a straight plate section 1111. The simple geometry of the straight plate section 1111 prevents hair, toilet paper, and other debris in the liquid pool from getting tangled on the blade 11. The protective plate 13 is connected to the connecting shaft 12, located at the top of the blade 11, and is used to shield the blade. On at least one side of 11, the liquid and impurities in the liquid pool will rise due to centrifugal force. The protective plate 13 can guide the liquid and impurities to move towards the pool wall and downward, thereby preventing impurities from getting tangled on the connecting shaft 12. By setting the protective plate 13, which is located at the top of the straight plate section 1111, the straight plate section 1111 itself can prevent the tangling of impurities. The protective plate 13 can also prevent the connecting shaft 12 from getting tangled with impurities. This achieves the effect of preventing the connecting shaft 12 and the blade 11 from getting tangled with impurities, avoiding increasing the load on the drive mechanism, and ensuring that the device can operate normally while maintaining the stirring effect.

[0044] In some embodiments of this application, the protective plate 13 extends from the top of the straight plate segment 1111 toward one side of the straight plate segment 1111.

[0045] When the protective plate 13 extends from the top of the straight plate section 1111 toward one side of the straight plate section 1111, that is, the protective plate 13 is inclined toward the straight plate section 1111, the inclination angle of the protective plate 13 can be set to 30°, 45° or 60°, and the specific inclination angle can be set according to actual needs.

[0046] In some embodiments, the protective plate 13 extends circumferentially along the connecting shaft 12 and extends from the top of the straight plate segment 1111 toward one side of the straight plate segment 1111. That is, the protective plate 13 is umbrella-shaped at the top of the blade 11, and due to its all-round coverage design, it can prevent hair, toilet paper and other debris in the liquid from getting tangled on the top of the blade 11 and the connecting shaft 12 from multiple directions.

[0047] The protective plate 13 can effectively prevent hair, toilet paper and other easily tangled debris in the liquid pool from directly contacting the top of the blade 11 and the area of ​​the connecting shaft 12. The inclined protective plate 13 helps to guide the liquid and impurities to flow downward or outward from the top of the blade 11 and mix with the liquid in the liquid pool, thereby forming a more effective vortex and mixing effect, making the liquid more concentrated in the stirring area.

[0048] Please refer to some embodiments of this application. Figure 1 and Figure 3 The protective plate 13 is bent and extended from the top of the straight plate section 1111 toward one side of the straight plate section 1111.

[0049] When the protective plate 13 is bent and extended from the top of the straight plate section 1111 toward one side of the straight plate section 1111, that is, the protective plate 13 extends toward the straight plate section 1111 and is bent or curved, the bending design can be adjusted according to different application scenarios. For example, by changing the bending angle or curvature, it can be adapted to different types of liquid pools and stirring requirements, making it suitable for various complex working conditions.

[0050] The curved protective plate 13 can more effectively guide liquids and impurities to flow in a specific direction, preventing easily entangled debris such as hair and toilet paper from directly contacting the top of the blade 11 and the connecting shaft 12, and significantly reducing the possibility of debris adhering to the blade 11.

[0051] Meanwhile, the curved protective plate 13 helps improve the liquid flow path, allowing the liquid to flow more smoothly along the protective plate 13. Compared to the flat protective plate 13, the curved design increases the effective coverage area of ​​the protective plate 13, which can better shield the top of the blade 11, prevent liquid and impurities from entering the area of ​​the connecting shaft 12, and provide broader protection.

[0052] Please refer to some embodiments of this application. Figure 3 The protective plate 13 is bent into an arc shape.

[0053] The protective plate 13 is bent into an arc shape, making its surface smooth. This arc-shaped, smooth surface significantly reduces resistance encountered during liquid flow. Compared to bent or flat baffles, the arc-shaped protective plate 13 better guides liquid and debris to flow in a specific direction, creating a more effective vortex and mixing effect. This reduces irregular rebound and turbulence during liquid flow, minimizes energy loss, helps reduce motor load, saves energy, and improves overall mixing efficiency. In septic tanks, the arc-shaped protective plate 13 effectively guides easily entangled debris such as hair and toilet paper to slide off its surface.

[0054] The specific curvature of the protective plate 13 can be set according to the size of the blade 11, the rotation speed, and the nature of the impurities. It is only necessary to ensure that the liquid and impurities can move along the protective plate 13 towards the liquid pool.

[0055] The curved surface design of the arc-shaped protective plate 13 has a buffering effect. When the liquid at the bottom of the liquid pool flows upward and encounters the arc-shaped protective plate 13, the water flow will be smoothly thrown out along the arc surface instead of directly colliding and producing disordered rebound. This buffering effect reduces energy loss and makes the liquid flow more stable. After mixing with the liquid in the liquid pool, it forms a more regular vortex and flow pattern, which helps to improve the overall mixing efficiency of the liquid and ensures that impurities are fully dispersed.

[0056] Because the curved protective plate 13 has a smooth surface and curved structure, it can better guide the liquid rotation and throw it towards the liquid surface, generating regular waves and forming large vortices in the liquid pool. These waves effectively break up and disperse soft materials (such as toilet paper) when they collide with the liquid surface. In septic tank treatment, this design can significantly improve the decomposition effect of soft materials and prevent them from getting tangled on the blades 11 or connecting shaft 12, thereby reducing equipment failure and maintenance frequency. The curved protective plate 13 is also less prone to the adhesion of impurities, avoiding the accumulation of dirt and debris, reducing downtime and maintenance costs, and improving work efficiency.

[0057] Please refer to some embodiments of this application. Figure 3 The curvature of the protective plate 13 is 2.43 radians (rad) to 2.97 rad.

[0058] If the curvature of the protective plate 13 is too large, the liquid will be thrown upwards and towards the pool wall due to inertia. When it encounters strip-shaped or other soft materials, it may become entangled on the blades 11 and connecting shaft 12 as the blades 11 rotate. Over time, the entangled material will gradually increase, increasing the motor load and affecting its normal operation. Simultaneously, if the curvature of the protective plate 13 is too large, the main direction of liquid flow will be biased "upwards" and "towards the pool wall." After being thrown towards the pool wall, the liquid will experience less collision and impact with the liquid at the bottom. The purpose of the splash is to break up soft materials (such as toilet paper) through collisions between liquids; therefore, a weakened splash effect will reduce the breaking up of soft materials, affecting the overall mixing effect. If the curvature of the protective plate 13 is too small, the force and range of the liquid being thrown out will be limited, resulting in a smaller splash area and a smaller liquid flow area within the pool. This will affect the decomposition of impurities (such as feces in a septic tank and organic matter like toilet paper).

[0059] Therefore, the curvature of the protective plate 13 of the blade 11 is set to 2.43 rad to 2.97 rad. This curvature of the curved protective plate 13 guides the liquid and impurities along its surface, preventing impurities from tangling on the blade 11 or connecting shaft 12. It also allows the liquid to be effectively flung out and impact the liquid surface, forming a large-scale splash, increasing the collision effect between liquids and improving the decomposition effect on soft materials (such as feces and toilet paper). Furthermore, it guides the liquid to flow widely throughout the entire liquid pool, rather than concentrating in a localized area, improving fluidity and reducing dead zones. Due to the large splash coverage and wide liquid flow area, impurities (such as feces, toilet paper, and other organic matter) can collide and rub against the liquid over a larger area, thus being more effectively broken down. The liquid flow is smoother, impurities are effectively broken down and dispersed, and the stirring process is more efficient.

[0060] In septic tanks, organic matter can be effectively broken down and immersed in water to accelerate fermentation and decomposition, reduce the accumulation of impurities, and prevent clumping on the surface of the liquid, eliminating the need for a vacuum truck to remove the waste.

[0061] In some embodiments, the curvature of the protective plate 13 is set to 2.43 rad. A smaller curvature helps to form larger waves and a wider liquid flow area, which helps to improve the mixing degree of substances in the liquid pool, that is, it is beneficial to break up larger or harder impurities and improve stirring efficiency. Since the waves cover a wide range, they promote the full mixing of impurities in the pool, which helps to accelerate the fermentation and decomposition process of organic matter and avoid the occurrence of clumping.

[0062] In other embodiments, the curvature of the protective plate 13 is set to 2.7 rad. 2.7 rad is an intermediate value that can effectively guide liquid and impurities to move downward along the pool wall while ensuring a certain amount of wave formation, reducing the risk of impurities entanglement. It is suitable for the treatment of various types of impurities, effectively breaking up larger or harder impurities, and also better preventing soft substances from entangled on the blade 11 or connecting shaft 12, effectively protecting the normal operation of the equipment.

[0063] In some other embodiments, the curvature of the protective plate 13 is set to 2.97 rad. The larger curvature can more effectively guide the liquid and impurities downward, significantly avoiding the possibility of impurities getting tangled on the blade 11 or connecting shaft 12. By avoiding the accumulation of tangled material, the extra load on the motor can be effectively reduced, the service life of the equipment can be extended, and its long-term stable operation can be ensured.

[0064] After repeated experiments, it was confirmed in practice that the protective plate 13 within this arc range can form vortices and create waves on the liquid surface, resulting in a large liquid flow area. This ensures that impurities are decomposed effectively while preventing debris from entangled. It also eliminates the need for a vacuum truck to remove sewage, greatly reducing costs and improving efficiency.

[0065] In some embodiments of this application, please refer to 1 and Figure 3 The protective plate 13 and the straight plate section 1111 are integrally formed structures.

[0066] The integrated design of the protective plate 13 and the straight plate section 1111 eliminates the seams or welding points between them, thereby enhancing the overall structural strength and rigidity. This helps resist the mechanical stress generated during mixing and reduces the risk of damage due to fatigue or impact. Because there are no welding points or connectors, the integrated structure reduces potential sources of corrosion and wear, making the equipment more corrosion-resistant and wear-resistant during long-term use, thus extending its service life.

[0067] The one-piece molded structure has better balance and stability, and can maintain smooth operation at high speeds. This helps to reduce vibration and noise, improve the overall operating quality of the equipment, simplify the manufacturing process, reduce manufacturing costs, increase production efficiency, and reduce maintenance needs.

[0068] In some embodiments, the protective plate 13 is curved in an arc shape towards the side of the straight plate section 1111. The one-piece design makes the liquid flow path smoother, reduces turbulence and energy loss, and improves stirring efficiency. In addition, since there are no gaps or seams, the one-piece structure of the protective plate 13 and the straight plate section 1111 is less prone to the accumulation of dirt and impurities, reducing maintenance frequency, reducing motor load, and increasing service life.

[0069] Please refer to some embodiments of this application. Figure 1Multiple blades 11 are provided; multiple blades 11 are arranged at intervals along the circumferential direction of the connecting shaft 12.

[0070] In this application, "multiple" refers to two or more. By setting multiple blades 11 connected to the connecting shaft 12 and spaced apart circumferentially along the connecting shaft 12, a larger stirring area can be covered, thereby more effectively stirring the liquid, generating stronger centrifugal force, and forming a stronger vortex. This allows impurities to better contact the liquid, helps to fully mix, disperse, and break up impurities in the liquid (such as organic matter in septic tanks), accelerates the fermentation and decomposition process of organic matter, prevents clumping or floating, and thus improves the overall treatment efficiency.

[0071] Multiple blades 11 are spaced circumferentially along the connecting shaft 12, which allows the liquid to be subjected to stirring forces in different directions, ensuring uniform distribution of the liquid throughout the tank, reducing dead zones, ensuring liquid circulation throughout the tank, preventing impurity accumulation, and improving stirring efficiency. Furthermore, the multiple blades 11 effectively distribute the mechanical stress generated during stirring, resulting in a more robust structure capable of withstanding greater torque and load.

[0072] In some embodiments, such as Figure 1 Two blades 11 are provided and connected to both sides of the connecting shaft 12 to improve stirring efficiency. In other embodiments, four blades 11 can be provided, which are spaced apart circumferentially along the connecting shaft 12 for even higher stirring efficiency.

[0073] Please refer to some embodiments of this application. Figures 1 to 4 Multiple blades 11 are arranged at equal intervals along the circumference of the connecting shaft 12.

[0074] The 11 blades spaced equidistantly ensure that the liquid in the tank receives uniform stirring force, preventing areas from being insufficiently agitated. This allows the liquid to circulate rapidly throughout the tank, forming regular and symmetrical vortices. These vortices facilitate collisions with the liquid surface and impurities, creating waves that further enhance the stirring effect and improve efficiency. In septic tank treatment, this design can more effectively break up soft materials (such as toilet paper and feces), preventing them from accumulating or tangling.

[0075] Furthermore, the multiple blades 11 arranged at equal intervals can maintain a uniform torque distribution during rotation, reducing vibration and fatigue damage caused by uneven force, which helps the equipment operate more smoothly and extends its service life. If two blades 11 are set, they are arranged opposite each other; if four blades 11 are set, the angle between two adjacent blades 11 is 90°.

[0076] Please refer to some embodiments of this application. Figure 1 , Figure 3 and Figure 4Multiple protective plates 13 are arranged symmetrically around the circumference of the connecting shaft 12.

[0077] By symmetrically arranging the protective plate 13 around the connecting shaft 12 in a circumferential direction, a continuous, all-around protective barrier can be formed. Regardless of the direction from which strip-shaped or soft material approaches the blade 11, it can be effectively guided downwards along the pool wall, preventing it from becoming entangled on the blade 11 or the drive mechanism. This design also ensures that the protective plate 13 covers the entire liquid pool when rotating, without leaving any blind spots due to the angle limitation of a single protective plate 13. In scenarios such as septic tanks containing many strip-shaped objects (such as toilet paper or hair) or soft impurities, this design reduces the risk of entanglement and better protects the blade 11 and other drive components.

[0078] In some embodiments, such as Figures 2 to 4 Two blades 11 are radially symmetrically arranged along the connecting shaft 12. A protective plate 13 is integrally formed with the blades 11 and is used to shield one side of the blades 11. The two protective plates 13 are also circumferentially symmetrically arranged along the connecting shaft 12. The symmetrical arrangement of the blades 11 ensures a uniform distribution of centrifugal force generated during rotation, reducing wear caused by vibration and imbalance, extending the service life of the equipment, and creating a more uniform and effective liquid flow within the liquid pool, further optimizing stirring efficiency. The symmetrically arranged protective plates 13 better guide the liquid and impurities downwards along the pool wall, effectively preventing impurities from moving upwards and entangled on the blades 11 or connecting shaft 12 from all directions, avoiding the risk of entanglement.

[0079] In other embodiments, a plurality of blades 11 are spaced apart circumferentially along the connecting shaft 12, and a plurality of protective plates 13 are located on the top of the blades 11 for shielding the sides of the blades 11. The plurality of protective plates 13 are arranged circumferentially and symmetrically along the connecting shaft 12.

[0080] Please refer to some embodiments of this application. Figure 2 The lower edge of the straight section 1111 is inclined away from the protective plate 13 by the connecting shaft 12.

[0081] The lower edge of the straight section 1111 refers to the edge of the straight section 1111 that is furthest from the protective plate 13. For example... Figure 2 By tilting the lower edge of the straight plate segment 1111 away from the connecting shaft 12 toward the direction away from the protective plate 13, the material usage can be reduced, which helps to reduce the torque required by the drive mechanism (such as the motor) during startup and continuous operation, thereby reducing the burden on the motor and other drive components, reducing motor power, extending the service life of the motor and transmission system, and achieving energy saving.

[0082] Furthermore, the side of the straight section 1111 that is away from the connecting shaft 12 can still rotate within the liquid pool to form a large vortex. Without sacrificing strength, the blade 11 structure is made more flexible to adapt to different working conditions.

[0083] In one embodiment, the angle between the lower edge of the straight plate segment 1111 and the axis of the connecting shaft 12 is 75° to 80°. When the blade 11 rotates in the liquid pool, the liquid and impurities in the pool form a vortex in the same direction as the rotation of the blade 11. When the angle between the lower edge of the straight plate segment 1111 and the axis of the connecting shaft 12 is set too small, it is equivalent to the area of ​​the blade 11 being too small. The vortex generated when the blade 11 rotates will be smaller, which will reduce the vortex area and affect the stirring effect. When the angle is set too large, it is equivalent to the area of ​​the blade 11 being too large. The contact area between the blade 11 and the liquid in the liquid pool is large, requiring a large transmission force, which will increase the load on the motor.

[0084] Therefore, the angle between the lower edge of the straight plate section 1111 and the axis of the connecting shaft 12 is set between 75° and 80°. The angle is reasonable, which can ensure stable normal operation and ensure that the blades 11 have a sufficient area to generate effective vortices. It also avoids the extra load caused by the blades 11 having an excessively large area, so that the blades 11 can form vortices of appropriate size in the liquid pool and ensure good stirring effect.

[0085] In some embodiments, such as Figure 2 The device is equipped with two symmetrical blades 11, and the angle formed by the lower edges of the straight sections 1111 of the two blades 11 ranges from 150° to 160°. This reduces the contact area between the blades 11 and the liquid, decreases the liquid flow resistance, reduces the motor load, saves energy, and extends the equipment life.

[0086] Please see Figures 1 to 4 This application provides a stirring device 100, which includes a motor (not shown) and stirring blades 10 as described above. A connecting shaft 12 is fixedly connected to the output end of the motor, and the stirring part 111 of the blades 11 is disposed away from the output end of the motor.

[0087] The stirring device 100 includes a motor and stirring blades 10. The connecting shaft 12 of the stirring blades 10 is connected to the output end of the motor. The motor drives the connecting shaft 12 to rotate, thereby driving the blades 11 to rotate. A stirring section 111 is provided on the blades 11, at least partially extending into the liquid pool. The stirring section 111 rotates within the liquid pool, creating a vortex and generating centrifugal force to break up impurities in the liquid pool. The stirring section 111 is a straight plate section 1111. The simple geometry of the straight plate section 1111 prevents debris such as hair and toilet paper from getting tangled on the blades 11. A protective plate 13 is connected to the connecting shaft 12, located at the top of the blades 11, and serves to shield at least one side of the blades 11. The liquid and impurities in the liquid pool are separated due to centrifugal force. The upward motion of the blades, guided by the protective plate 13, allows the liquid and impurities to move towards the pool wall and downwards, thus preventing impurities from entangled on the connecting shaft 12. The protective plate 13, located at the top of the straight section 1111, prevents impurities from entangled on its own. Furthermore, the protective plate 13 prevents impurities from entangled on the connecting shaft 12, achieving the effect of preventing impurities from entangled on both the connecting shaft 12 and the blades 11. This avoids increasing the load on the drive mechanism and ensures the device operates normally while maintaining the stirring effect.

[0088] In some embodiments, such as Figure 2 The output end of the motor is fixedly connected to a bushing 21. One end of the connecting shaft 12 extends into the bushing 21 and is fixedly connected to the bushing 21. The other end of the connecting shaft 12 is fixedly connected to the blade 11. The design of the bushing 21 makes the connection between the connecting shaft 12 and the motor output end simpler, easier to disassemble and replace, and ensures the stability and consistency of the connection. This allows power to be effectively transmitted from the motor to the connecting shaft 12 and the blade 11, reducing energy loss.

[0089] In the experiment, after use, the mixing device 100 no longer required the use of a vacuum truck or other manual cleaning. It only needs to be operated for a period of time each day (such as half an hour), and only consumes a small amount of electricity per month, which greatly reduces costs and has a long service life.

[0090] Please refer to some embodiments of this application. Figure 1 The stirring device 100 also includes a fixing component 30. The motor is connected to one end of the fixing component 30, and the other end of the fixing component 30 is used to fix it to the opening of the liquid tank. By setting the fixing component 30 to fix the motor to the opening of the liquid tank, the stability of the entire stirring device 100 can be ensured, avoiding the risk of equipment displacement or overturning due to motor vibration or imbalance, and ensuring long-term stable operation of the equipment. The fixing component 30 can be a clamp, a flange connector, a hanger, or a rail, etc.

[0091] Securing the motor to the tank opening reduces the risk of equipment falling due to accidental collisions or other external factors. It also reduces the possibility of the motor coming into contact with the liquid, improving electrical safety. Operators can quickly install the appropriate fixing component 30 based on the tank opening size. In septic tanks, where there is usually a distance between the opening and the liquid surface, this design saves space inside the tank and allows room for the final cover. Furthermore, fixing the motor to the opening makes routine inspection, maintenance, and repairs more convenient, allowing most maintenance work to be completed without entering the tank.

[0092] Please refer to some embodiments of this application. Figure 1 The fixing component 30 includes a mounting rod 31 and a housing 32. The mounting rod 31 is connected to one end of the housing 32. The motor is located inside the housing 32. The output end of the motor passes through the housing 32 and is connected to the blade 11. The mounting rod 31 is used to fix the liquid pool opening.

[0093] Two mounting rods 31 are provided, and they can be fixed to the opening of the liquid tank using expansion bolts. The mounting rods 31 provide support points for hoisting and installing the stirring device 100, increasing the stability and rigidity of the entire device and facilitating the insertion of the stirring blades 10 into the liquid tank. The mounting rods 31 can be adjusted according to different sizes and shapes of liquid tanks, increasing the versatility and flexibility of the stirring device 100 to meet diverse application scenarios. The housing 32 is placed between the tank opening and the liquid surface, and the motor is installed inside the housing 32. The housing 32 protects the motor from external environmental factors (such as moisture, corrosive gases, or liquids), extending the motor's service life. Figure 1 The power cord 22 for the motor is led out from the chassis 32.

[0094] Because the motor is enclosed within the housing 32, routine inspection and maintenance are more convenient. Maintenance work can be performed without disturbing the interior of the liquid tank. During use, the housing 32 not only protects the motor but also prevents operators from accidentally contacting rotating parts or other live components, reducing the risk of accidents. The design of the housing 32 makes the entire device look cleaner and more aesthetically pleasing.

[0095] In some embodiments of this application, the stirring device 100 further includes a timer component (not shown in the figure), which is electrically connected to the motor and is used to control the motor to start and stop at regular intervals.

[0096] By setting a timer component, start and stop times can be configured, enabling automated mixing without manual intervention. The timer precisely controls the motor's operating time according to actual needs, avoiding unnecessary long runs and thus achieving energy savings. Simultaneously, by rationally scheduling the motor's work cycle, continuous operating time can be reduced, wear and tear can be decreased, and equipment lifespan extended. Parameters (such as duration and interval) can be flexibly adjusted to meet diverse process requirements based on different application scenarios.

[0097] In some embodiments, the timer component includes a time switch electrically connected to the motor. When the time switch reaches the set time, it energizes the motor, causing the motor rotor to rotate, which in turn drives the blades 11 to rotate. This creates a vortex in the liquid within the septic tank. The liquid, driven by the blades 11, forms vortices and waves. When the liquid encounters soft materials (such as feces and paper towels), these materials, due to inertia, will spiral out along the arc-shaped protective plate 13 of the blades 11, preventing hair and other debris from becoming entangled on the blades 11 and the connecting shaft 12, thus providing protection. Furthermore, the vortex created by the rotating blades 11 causes the liquid and organic matter to collide, loosening the organic matter in the septic tank and causing it to sink into the water, accelerating fermentation and decomposition, and reducing the volume of organic matter in the tank. Generally, septic tanks only need to be stirred for 30 minutes per day. For individual septic tanks with a large amount of organic matter, the frequency can be increased. A fixed daily cycle eliminates the need for a vacuum truck or transportation to a designated disposal site.

[0098] In some embodiments of this application, the stirring device 100 further includes an overload protection mechanism (not shown), which is electrically connected to the motor. The overload protection mechanism can automatically cut off the power supply or issue an alarm when the motor load exceeds its rated value, preventing the motor from being damaged due to prolonged overload operation.

[0099] In some embodiments of this application, the stirring device 100 further includes a leakage current protection mechanism (not shown), which is electrically connected to the motor. The leakage current protection mechanism can quickly cut off the power supply when a leakage current is detected in the electrical system, preventing danger to personnel and damage to internal components.

[0100] In some embodiments of this application, the stirring device 100 also includes a distribution box (not shown in the figure), in which the timer assembly, overload protection mechanism, and leakage protection mechanism are all disposed. All electrical protection and control components are concentrated in one distribution box, facilitating unified management and monitoring, effectively preventing the influence of external environment (such as moisture and dust) on electrical components, and reducing the risk of failure due to external factors.

[0101] In the experiment, after the mixing device 100 was used, no further cleaning with a vacuum truck or other manual labor was required. It only needed to operate for a period of time each day (e.g., half an hour), incurring only a small monthly electricity cost. In some embodiments, it only required operating the mixing device 100 for 30 minutes daily, with monthly electricity costs of only 10-15 yuan. Traditional septic tank cleaning methods require vacuuming every 1-3 months, costing between 800 and 3000 yuan each time. The mixing device 100 in this application, under normal conditions, can be controlled at a cost of 1200-1500 yuan, with a service life of 8-10 years. A septic tank can save at least 3000 yuan per year (based on a minimum cleaning cost of 800 yuan per time), enabling residents to pay for their own cleaning, reducing investment in septic tanks, and eliminating the need for related government funding. For example, in residential communities, the traditional method for cleaning septic tanks involves the community management investing funds to use vacuum trucks to clean the septic tanks and then transporting the waste to designated purification facilities for treatment. However, using the mixing device described in this application eliminates the need for vacuum trucks and eliminates the need for financial investment from relevant departments in purification facilities. Therefore, using the mixing device 100 described in this application can significantly reduce costs.

[0102] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A stirring blade, characterized in that, The stirring blade includes a blade, a connecting shaft, and a protective plate. The blade is connected to the connecting shaft and has a stirring part. The protective plate is connected to the connecting shaft and is located at the top of the blade and is used to shield at least one side of the blade. The stirring section includes a straight plate section, one side of which is connected to the connecting shaft, and the protective plate is located on top of the straight plate section.

2. The stirring blade as described in claim 1, characterized in that, The protective plate extends from the top of the straight plate segment toward one side of the straight plate segment.

3. The stirring blade as described in claim 1, characterized in that, The protective plate is bent and extended from the top of the straight plate section toward one side of the straight plate section.

4. The stirring blade as described in claim 3, characterized in that, The protective plate is bent into an arc shape.

5. The stirring blade as described in claim 4, characterized in that, The curvature of the protective plate is 2.43 rad to 2.97 rad.

6. The stirring blade according to any one of claims 1 to 5, characterized in that, The protective plate and the straight plate section are integrally formed.

7. The stirring blade according to any one of claims 1 to 5, characterized in that, The blades are provided in multiple ways; The multiple blades are arranged at circumferential intervals along the connecting shaft.

8. The stirring blade as described in claim 7, characterized in that, The multiple blades are arranged at equal intervals along the circumference of the connecting shaft.

9. The stirring blade according to any one of claims 1 to 5, characterized in that, The lower edge of the straight section is inclined away from the protective plate by the connecting shaft.

10. A stirring device, characterized in that, The stirring device includes a motor and stirring blades as described in any one of claims 1 to 9, the connecting shaft is fixedly connected to the output end of the motor, and the stirring part of the blades is disposed away from the output end of the motor.

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