Multi-stage stirring flocculation basin

Abstract

The utility model discloses a multistage stirring flocculation basin which comprises a flocculation basin body, a main stirring system, a secondary stirring system, a flocculant inlet, a water inlet, a filter screen and a blow-off pipe. A premixing cylinder and a guide cylinder are arranged in the main stirring system, and a flocculating agent and raw water are stirred, dispersed and premixed in the premixing cylinder; the premixed mixture is fully stirred and mixed in the guide cylinder to promote flocculation, and then a secondary stirring rod and a secondary stirring blade which are opposite in direction are arranged in the secondary stirring system to perform multi-stage stirring on the mixture to promote complete flocculation. The problems that the flocculation speed and efficiency are influenced by slow release of a flocculating agent, and the single stirring and mixing effect is promoted by only using a plurality of stirring shafts are solved, and the flocculation speed and quality are improved by respectively arranging the main stirring system and the secondary stirring system to perform multi-stage stirring, dispersion and mixing on the flocculating agent and raw water.

Description

TECHNICAL FIELD

[0001] The utility model relates to water treatment technical field, concretely is a kind of flocculation tank of multistage stirring. BACKGROUND

[0002] As for domestic drinking water (or town public water supply), raw water taken from high-quality water source (well water or well-protected water supply special reservoir) is only sterilized to be finished product water;Raw water taken from general river or lake is first removed silt and other turbidity impurities, and then sterilized to be finished product water.For removing these impurities, coagulation is usually used, that is, appropriate coagulant is added to raw water, and after sufficient mixing, the stability of colloids is destroyed (destabilization) and adsorbed with the polymer after coagulant hydrolysis, so that the particles have flocculation performance.The purpose of flocculation tank is to create suitable hydraulic conditions for the particles with flocculation performance to aggregate in mutual contact to form larger flocculation bodies (floc).

[0003] As disclosed in Chinese invention with announcement number CN221788266U and announcement date October 1, 2024, a flocculation sedimentation tank can solve the problem that flocculant is not easy to mix with sewage in the tank during use, resulting in poor flocculation effect and low sedimentation efficiency.The utility model includes a tank body provided with a sedimentation cavity;A plurality of mixing mechanisms including a first support frame, a first stirring shaft and a first motor, the first support frame is arranged in the tank body, the first motor is arranged in the first support frame, and the first motor drives the first stirring shaft to rotate;A containing mechanism including a containing tank and a second support frame, the second support frame is arranged in the tank body, and the containing tank is arranged in the second support frame;The containing tank is provided with a discharge port.

[0004] As can be seen from the above patent, the flocculation sedimentation tank uses a containing tank to store flocculant, which is gradually discharged into the tank body through the discharge port to ensure the quality of flocculation and sedimentation, and multiple stirring shafts are used to mix flocculant and sewage sufficiently to ensure the quality and efficiency of flocculation and sedimentation;However, in actual production process, the slow release of flocculant affects the speed and efficiency of flocculation, and the use of multiple stirring shafts to promote stirring and mixing effect is single;Therefore, the present utility model provides a flocculation tank with multistage stirring to solve the above problems. SUMMARY

[0005] The utility model aims at solving the deficiency of prior art, and provides a flocculation tank with multistage stirring.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0007] The application discloses a multi-stage stirring flocculation tank, which comprises a flocculation tank body, a main stirring system arranged at the top center and inside of the flocculation tank body, wherein the main stirring system comprises a main motor, a main stirring shaft, a premixing cylinder, premixing cylinder stirring blades, a flow guide cylinder and flow guide cylinder stirring blades arranged in sequence from top to bottom; the main motor is arranged on the top center of the flocculation tank body; the output end of the main motor is connected with the main stirring shaft through a shaft coupling; the main stirring shaft extends downward from the main motor to the middle bottom of the flocculation tank body; the premixing cylinder is arranged below the main motor; a plurality of layers of premixing cylinder stirring blades are arranged on the main stirring shaft in the premixing cylinder area from top to bottom; the flow guide cylinder is arranged below the premixing cylinder; a plurality of layers of flow guide cylinder stirring blades are arranged on the main stirring shaft in the flow guide cylinder area from top to bottom; a plurality of secondary stirring systems are arranged around the main stirring system; each secondary stirring system comprises a secondary motor, a secondary stirring shaft and secondary stirring blades arranged in sequence from top to bottom; the output end of the secondary motor is connected with the secondary stirring shaft through a shaft coupling; the secondary stirring shaft extends downward from the secondary motor to the middle bottom of the flocculation tank body; a plurality of layers of secondary stirring blades are arranged on the secondary stirring shaft from top to bottom; and the secondary stirring blades are uniformly distributed on the secondary stirring shaft at equal layer spacing.

[0008] Preferably, a plurality of premixing cylinder stirring blades and flow guide cylinder stirring blades are arranged in the plane of each layer of the premixing cylinder stirring blades and the flow guide cylinder stirring blades respectively with the main stirring shaft as the center, and adjacent premixing cylinder stirring blades and flow guide cylinder stirring blades are uniformly distributed at equal included angles respectively.

[0009] Preferably, stirring paddles are movably connected to the radial outer ends of the flow guide cylinder stirring blades, the stirring paddles are multi-blade stirring paddles, the number of blades is 2-4, preferably 3, and the three stirring blades are uniformly distributed at an included angle of 120° between adjacent blades.

[0010] Preferably, the secondary stirring blades are arranged at an included angle of 75° with the secondary stirring shaft upwardly or downwardly, and the directions of the secondary stirring blades on adjacent secondary stirring shafts are opposite.

[0011] Preferably, the radius of the premixing cylinder and the premixing cylinder stirring blades is smaller than the radius of the flow guide cylinder and the flow guide cylinder stirring blades respectively.

[0012] Preferably, a plurality of fixed supports connected with the top edges of the flocculation tank body are arranged at the top center of the flocculation tank body, and the main motor, the premixing cylinder, the flow guide cylinder and the secondary motor are fixed on the fixed supports respectively.

[0013] Preferably, the flocculation tank body is symmetrically provided with a flocculant inlet and a water inlet near the top center, respectively, and the flocculant inlet and the water inlet are respectively directed to the premixing barrel through a conduit; a filter screen is arranged near the bottom on the right side of the flocculation tank body, and a sewage pipe is arranged at the center of the bottom of the flocculation tank body.

[0014] The beneficial effects of the present application are:

[0015] The premixing barrel and the flow guide barrel are arranged in the main stirring system, the flocculant and raw water are stirred and dispersed and premixed in the premixing barrel, the premixed mixture is fully stirred and mixed in the flow guide barrel to promote flocculation, and then the oppositely directed secondary stirring rods and secondary stirring blades are arranged in the secondary stirring system to perform multi-stage stirring on the mixture to promote complete flocculation. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed in the embodiments or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are only exemplary, and for those skilled in the art, other embodiments can be derived from the provided drawings without creative labor.

[0017] The structures, proportions, sizes, etc. shown in the present specification are only used to cooperate with the content disclosed in the specification, to be understood and read by those skilled in the art, and do not define the limiting conditions for the implementation of the present application, so they do not have technical significance. Any modification of structure, change of proportion relationship or adjustment of size, without affecting the effects and purposes that can be achieved by the present application, should still fall within the scope of the technical content disclosed by the present application.

[0018] Fig. 1 is a front view structural schematic diagram of the present application;

[0019] Fig. 2 is a front view structural schematic diagram of the present application;

[0020] As shown in the figure: 1, the flocculation tank body; 101, the fixed support; 2, the main stirring system; 21, the main motor; 22, the main stirring shaft; 23, the premixing cylinder; 24, the premixing cylinder stirring blade; 25, the flow guide cylinder; 26, the flow guide cylinder stirring blade; 27, the stirring paddle; 3, the secondary stirring system; 31, the secondary motor; 32, the secondary stirring shaft; 33, the secondary stirring blade; 4, the flocculant inlet; 5, the water inlet; 6, the filter screen; 7, the blowdown pipe. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments of the present application. The components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0023] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0024] It should be noted that: similar reference numerals and letters easily represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0025] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly placed when the product of the present application is used, or the orientation or positional relationship commonly understood by those skilled in the art, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second" and the like are only used for differentiation in description, and cannot be understood as indicating or implying relative importance.

[0026] In the description of the utility model, still need explaining, unless have explicit provision and limitation, term "arrangement", "installation", "connection", "be connected" should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected;Can be mechanical connection, also can be electrical connection;Can be directly connected, also can be indirectly connected through intermediate medium, can be two elements inside the communication。For ordinary skilled person in the art, the above-mentioned terms can be understood in the specific meaning in the utility model according to specific circumstances.

[0027] Referring to Figs. 1-2 The utility model discloses a multistage stirring's flocculation tank, including flocculation tank body 1, main stirring system 2, secondary stirring system 3, flocculating agent inlet 4, water inlet 5, filter screen 6 and blow-off pipe 7. Set up in the main stirring system 2 of flocculation tank body 1 top center and inside for the premixing and full stirring of raw water and coagulant, the several secondary stirring system 3 for around the main stirring system 2 around setting is used for promoting complete flocculation to multistage stirring of mixture;Set up in the flocculating agent inlet 4 and water inlet 5 of flocculation tank body 1 top center near place are used for introducing flocculating agent and water respectively and are introduced into the main stirring system 2 and premix, set up in the filter screen 6 for filtering flocculating material and other pollutants of flocculation tank body 1 right side inside near bottom, set up in the blow-off pipe 7 for discharging sludge and flocculating material and other pollutants of flocculation tank body 1 bottom center.

[0028] The top center of flocculation tank body 1 is provided with several fixing supports 101 for fixing and mounting, and the fixing supports 101 are connected with the top edge of the flocculation tank body 1. The main stirring system 2 comprises a main motor 21, a main stirring shaft 22, a premixing cylinder 23, premixing cylinder stirring blades 24, a flow guide cylinder 25 and flow guide cylinder stirring blades 26 arranged in sequence from top to bottom. The main motor 21, the premixing cylinder 23 and the flow guide cylinder 25 are respectively arranged at the center and around the fixing supports 101. The output end of the main motor 21 is connected with the main stirring shaft 22 through a shaft coupling and drives the main stirring shaft 22 to rotate. A plurality of layers of premixing cylinder stirring blades 24 and flow guide cylinder stirring blades 26 are arranged on the main stirring shaft 22 from top to bottom in the premixing cylinder 23 region and the flow guide cylinder 25 region. The main stirring shaft 22 drives the premixing cylinder stirring blades 24 and the flow guide cylinder stirring blades 26 to rotate, so that the raw water and the flocculating agent in the premixing cylinder 23 region and the flow guide cylinder 25 region are premixed and fully stirred to promote flocculation.

[0029] The secondary stirring system 3 comprises, from top to bottom, a secondary motor 31, a secondary stirring shaft 32 and secondary stirring blades 33, the secondary motor 31 is arranged on the fixed support 101, the output end of the secondary motor 31 is connected to the secondary stirring shaft 32 through a shaft coupling and drives the secondary stirring shaft 32 to rotate, a plurality of layers of secondary stirring blades 33 are arranged on the secondary stirring shaft 32 from top to bottom, and the secondary stirring blades 33 are evenly distributed at equal layer intervals. The secondary stirring shaft 32 drives the secondary stirring blades 33 to rotate to fully stir the mixture.

[0030] In an optional embodiment, a plurality of premixing cylinder stirring blades 24 and guide cylinder stirring blades 26 are arranged in the planes of each layer of premixing cylinder stirring blades 24 and guide cylinder stirring blades 26, respectively, with the main stirring shaft 22 as the center, and adjacent premixing cylinder stirring blades 24 and guide cylinder stirring blades 26 are evenly distributed at equal included angles, and more premixing cylinder stirring blades 24 and guide cylinder stirring blades 26 facilitate more sufficient premixing and stirring of the flocculant and raw water.

[0031] In an optional embodiment, the radii of the premixing cylinder 23 and the premixing cylinder stirring blades 24 are smaller than the radii of the guide cylinder 25 and the guide cylinder stirring blades 26, so that the premixed mixture can all enter the guide cylinder 25 from the premixing cylinder 23 and be more fully stirred in the guide cylinder 25.

[0032] In an optional embodiment, the radial outer end of the guide cylinder stirring blade 26 is movably connected to a stirring paddle 27, the stirring paddle 27 is a multi-blade stirring paddle, the number of blades is 2-4, and preferably 3; and the 3 stirring blades are evenly distributed at adjacent included angles of 120°. The arrangement of the stirring paddle 27 can increase the interlayer turbulence in the stirring process to promote stirring and flocculation.

[0033] In an optional embodiment, the secondary stirring blades 33 are arranged at an included angle of 75° with the secondary stirring shaft 32 upwardly or downwardly, and the directions of the secondary stirring blades 33 on adjacent secondary stirring shafts 32 are opposite, so that the mixture fluid can enter the adjacent secondary stirring shaft 32 to continue to be stirred after being stirred by the secondary stirring shaft 32, and the process is repeated until the mixture fluid flows through the flocculation tank body 1, so that the stirring process is more uniform and complete flocculation is promoted.

[0034] Of course, the embodiments of the specific embodiments are preferred embodiments of the utility model, and are not limited to the protection scope of the utility model, so that: any equivalent changes made according to the structure, shape and principle of the utility model should be covered within the protection scope of the utility model.

Claims

1. A multi-stage agitated flocculation tank comprising a flocculation tank body (1), a main agitating system (2) is arranged at the top center and inside of the flocculation tank body (1), characterized in that: The main stirring system (2) comprises a main motor (21), a main stirring shaft (22), a premixing cylinder (23), premixing cylinder stirring blades (24), a flow guide cylinder (25) and flow guide cylinder stirring blades (26) arranged in sequence from top to bottom, the main motor (21) is arranged at the top center of the flocculation tank body (1), the output end of the main motor (21) is connected with the main stirring shaft (22) through a shaft coupling, the main stirring shaft (22) extends downward from the main motor (21) to the middle bottom of the flocculation tank body (1), the premixing cylinder (23) is arranged below the main motor (21), a plurality of layers of premixing cylinder stirring blades (24) are arranged on the main stirring shaft (22) in the premixing cylinder (23) region from top to bottom, the flow guide cylinder (25) is arranged below the premixing cylinder (23), a plurality of layers of flow guide cylinder stirring blades (26) are arranged on the main stirring shaft (22) in the flow guide cylinder (25) region from top to bottom; a plurality of secondary stirring systems (3) are arranged around the main stirring system (2), the secondary stirring system (3) comprises a secondary motor (31), a secondary stirring shaft (32) and secondary stirring blades (33) arranged in sequence from top to bottom, the output end of the secondary motor (31) is connected with the secondary stirring shaft (32) through a shaft coupling, the secondary stirring shaft (32) extends downward from the secondary motor (31) to the middle bottom of the flocculation tank body (1), a plurality of layers of secondary stirring blades (33) are arranged on the secondary stirring shaft (32) from top to bottom, and the secondary stirring blades (33) are uniformly distributed at equal intervals on the secondary stirring shaft (32).

2. A multi-stage mixing flocculator cell according to claim 1 wherein: A plurality of premixing cylinder stirring blades (24) and flow guide cylinder stirring blades (26) are arranged in the plane of each layer of premixing cylinder stirring blades (24) and flow guide cylinder stirring blades (26) respectively with the main stirring shaft (22) as the center, and adjacent premixing cylinder stirring blades (24) and flow guide cylinder stirring blades (26) are uniformly distributed at equal included angles.

3. A multiple stage mixing flocculator cell according to claim 1 wherein: A stirring paddle (27) is movably connected to the radial outer end of the flow guide cylinder stirring blade (26), the stirring paddle (27) is a multi-blade stirring paddle, the number of blades is 2-4, preferably 3; the three stirring blades are uniformly distributed at an included angle of 120° between adjacent blades.

4. A multiple stage mixing flocculator cell according to claim 1 wherein: The secondary stirring blades (33) are arranged at an included angle of 75° with the secondary stirring shaft (32) upward or downward, and the directions of the secondary stirring blades (33) on adjacent secondary stirring shafts (32) are opposite.

5. A multiple stage mixing flocculator cell according to claim 1 wherein: The radius of the premixing cylinder (23) and the premixing cylinder stirring blades (24) is smaller than the radius of the flow guide cylinder (25) and the flow guide cylinder stirring blades (26).

6. A multiple stage mixing flocculator cell according to claim 1 wherein: A plurality of fixed supports (101) connected with the top edge of the flocculation tank body (1) are arranged at the top center of the flocculation tank body (1), and the main motor (21), the premixing cylinder (23), the flow guide cylinder (25) and the secondary motor (31) are fixed on the fixed supports (101).

7. A multi-stage mixing flocculator cell according to claim 1 wherein: The flocculation tank body (1) is symmetrically provided with a flocculating agent inlet (4) and a water inlet (5) near the top center, the flocculating agent inlet (4) and the water inlet (5) are respectively pointed to the premixing barrel (23) through a conduit; a filter screen (6) is arranged at the right side of the flocculation tank body (1) and near the bottom, and a blowdown pipe (7) is arranged at the bottom center of the flocculation tank body (1).

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