A mechanical accelerated clarifier

Abstract

A mechanical accelerated clarifier comprises a clarifier body, a bridge is provided above the clarifier body, a stirring motor is fixedly provided on the bridge, a first reaction chamber is provided inside the clarifier body, a first cover is provided at the bottom of a stirring barrel, a stirring impeller and a mud scraper are respectively provided on a stirring shaft of the stirring motor, the first cover is fixedly connected to a scraping arm of the mud scraper, a second reaction chamber is provided outside the first reaction chamber, the second reaction chamber is surrounded by the second cover fixed on the bridge, the outer wall of the stirring barrel and the outer wall of the first cover, the second cover is composed of a first cone body with a conical shape at the top and a second cone body with a diameter expansion at the bottom, a through hole is provided on the second cone body, an inclined plate is provided between the outer wall of the second cover body and the inner wall of the clarifier body, and the area below the inclined plate is a third reaction chamber. The lower part of the second reaction chamber of the present invention is expanded to allow the fluid to tangent to the active substance at the bottom of the pool to form the third reaction chamber, thereby prolonging the contact flocculation time and increasing the flocculation volume, thereby solving the problem of alum flowers and mud residues being broken and floating.

Description

Technical Field

[0001] The invention relates to the field of clarifiers, in particular to a mechanically accelerated clarifier. Background Art

[0002] The mechanical accelerated clarifier is mainly composed of the first reaction chamber, the second reaction chamber and the separation chamber. In addition, there are water inlet and outlet systems, dosing systems, mud discharge systems and mechanical stirring and lifting systems. The mechanical accelerated clarifier is a structure that uses mechanical stirring to place coagulation, reaction and sedimentation in one pool for comprehensive treatment. Under the action of mechanical stirring, the suspended active sludge layer and the raw water with dosing increase the chance of particle collision and improve the coagulation effect. The separated clean water rises and flows out through the water collection tank. The sludge that settles is partly refluxed and mechanically mixed with the dosing raw water, and partly is discharged regularly after concentration. In the existing mechanical accelerated clarifier, the alum flowers or mud slag that enter the separation chamber from the second reaction chamber, due to the rapid expansion of the interface of the separation chamber, the flocculated alum flowers and mud slag with loose condensation nuclei are broken and floated, resulting in poor effluent water quality. Summary of the invention

[0003] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a mechanical accelerated clarifier to solve the problems raised in the above technical background.

[0004] The objective of the present invention is achieved through the following technical solutions:

[0005] A mechanical accelerated clarifier comprises a clarifier body, a bridge is provided above the clarifier body, a stirring motor is fixedly provided on the bridge, a first reaction chamber composed of a stirring barrel is provided inside the clarifier body, a first cover body integrally formed with the stirring barrel is provided at the bottom of the stirring barrel, a stirring impeller and a scraper are respectively provided on the stirring shaft of the stirring motor, the first cover body is fixedly connected to the scraper arm of the scraper, a second reaction chamber is provided outside the first reaction chamber, the second reaction chamber is surrounded by the second cover body fixed on the bridge frame, the outer wall of the stirring barrel and the outer wall of the first cover body, the second cover body is composed of a first cone body with a conical shape at the top and a second cone body with an expanded diameter at the bottom, a through hole is provided on the second cone body, an inclined plate is provided between the outer wall of the second cover body and the inner wall of the clarifier body, the area below the inclined plate is the third reaction chamber, and a water collecting tank is provided above the inclined plate; the through holes are equidistantly distributed along the circumferential outer wall of the second cone body; the cross section of the inclined plate has a honeycomb-shaped water inlet, and the water inlet forms an angle of 45°-60° with the horizontal direction along the length direction.

[0006] Furthermore, the first cover body is an umbrella-shaped cover body.

[0007] Furthermore, a water inlet pipe is provided on the outer wall of the mixing barrel.

[0008] Furthermore, a water outlet pipe is provided on the outer wall of the water collecting tank.

[0009] Furthermore, both the first reaction chamber and the second reaction chamber are provided with a drug adding tube.

[0010] Furthermore, sampling tubes are provided on the outer wall of the mixing barrel, the outer wall of the second cover body and the outer wall of the water collecting tank.

[0011] Furthermore, a pull rod is provided between the stirring impeller and the stirring shaft.

[0012] Furthermore, a conical bottom is provided below the clarification tank body 1, a scraping plate of a scraper is placed in the cavity of the conical bottom, and a mud discharge pipe is provided on the outer wall of the conical bottom.

[0013] The beneficial effects of the present invention are as follows: the lower part of the second reaction chamber of the present invention is enlarged to allow the fluid to tangent to the active substances at the bottom of the pool to form a third reaction chamber, thereby prolonging the contact flocculation time and increasing the flocculation volume; a through hole is provided on the second vertebral body, and the advection of the through hole impacts the water flow rising along the third reaction chamber to offset and reduce the floating active substances, allowing the fluid under the inclined plate of the mechanically accelerated clarification tank to slowly flow and rotate upward, which is conducive to the alum flocs to gather and nucleate toward the center of the pool; an inclined plate is provided between the outer wall of the second cover body and the inner wall of the clarification tank body, and the inclined plate can block the rising mud residue and make the mud residue move to the bottom of the clarification tank, thereby solving the problem of the alum flocs and mud residues being broken and floating. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the present invention;

[0015] Figure 2 This is a schematic diagram of the second cover structure of the present invention;

[0016] Figure 3 It is a schematic diagram of the water inlet structure of the inclined plate of the present invention;

[0017] Figure 4 is a cross-sectional view of the inclined plate of the present invention;

[0018] Figure 5 This is a schematic diagram of the water flow direction of the second reaction chamber of the present invention;

[0019] Figure 6 Schematic diagram of water flow direction in the third reaction chamber of the present invention.

[0020] In the figure, 1-clarification tank body, 2-bridge, 3-stirring motor, 4-stirring barrel, 5-first reaction chamber, 6-first cover, 7-stirring shaft, 8-stirring impeller, 9-scraper, 10-scraper arm, 11-second reaction chamber, 12-second cover, 13-inclined plate, 14-third reaction chamber, 15-collecting trough, 16-water inlet pipe, 17-water outlet pipe, 18-sampling tube, 19-pull rod, 20-conical bottom, 21-scraper plate, 22-sludge discharge pipe, 23-dosing tube, 12.1-first vertebra, 12.2-second vertebra, 12.3-through hole, 13.1-water inlet. DETAILED DESCRIPTION

[0021] The following describes the embodiments of the present invention by specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict.

[0022] It should be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present invention, and thus the drawings only show components related to the present invention rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated. Example

[0023] A mechanical accelerated clarifier, see attached Figure 1 -Attached Figure 2 As shown, it comprises a clarifier body 1, a bridge frame 2 is arranged above the clarifier body 1, a stirring motor 3 is fixedly arranged on the bridge frame 2, a first reaction chamber 5 composed of a stirring barrel 4 is arranged inside the clarifier body 1, a first cover body 6 integrally formed with the stirring barrel 4 is arranged at the bottom of the stirring barrel 4, a stirring impeller 8 and a mud scraper 9 are respectively arranged on the stirring shaft 7 of the stirring motor 3, the first cover body 6 is fixedly connected to the scraping arm 10 of the mud scraper 9, a second reaction chamber 11 is arranged outside the first reaction chamber 5, and the second reaction chamber 11 is fixed on the bridge frame 2 The second cover body 12 on the upper side, the outer wall of the mixing barrel 4 and the outer wall of the first cover body 6 are surrounded by each other. The second cover body 12 is composed of a first cone 12.1 with a conical shape on the upper side and a second cone 12.2 with an enlarged diameter on the lower side. A through hole 12.3 is provided on the second cone 12.2. An inclined plate 13 is provided between the outer wall of the second cover body 12 and the inner wall of the clarification tank body 1. The area below the inclined plate 13 is a third reaction chamber 14. A water collecting tank 15 is provided above the inclined plate 13. The through holes 12.3 are evenly spaced along the circumferential outer wall of the second cone 12.2. Please refer to the attached Figure 3 and attached Figure 4 As shown, the cross section of the inclined plate 13 has a honeycomb-shaped water inlet 13.1, and the water inlet 13.1 forms an angle of 45°-60° with the horizontal direction along the length direction. In this embodiment, the water inlet 13.1 forms an angle of 45° with the horizontal direction along the length direction.

[0024] In the above embodiment, preferably, the first cover body 6 is an umbrella-shaped cover body.

[0025] In the above embodiment, preferably, a water inlet pipe 16 is provided on the outer wall of the mixing barrel 4 .

[0026] In the above embodiment, preferably, a water outlet pipe 17 is provided on the outer wall of the water collecting tank 15 .

[0027] In the above embodiment, preferably, both the first reaction chamber 5 and the second reaction chamber 11 are provided with a dosing tube 23 .

[0028] In the above embodiment, preferably, a sampling tube 18 is provided on the outer wall of the mixing barrel 4 , the outer wall of the second cover body 12 , and the outer wall of the water collecting tank 15 .

[0029] In the above embodiment, preferably, a pull rod 19 is provided between the stirring impeller 8 and the stirring shaft 7 .

[0030] In the above embodiment, preferably, a conical bottom 20 is provided below the clarification tank body 1 , a scraping plate 21 of the scraper 9 is placed in the cavity of the conical bottom 20 , and a mud discharge pipe 22 is provided on the outer wall of the conical bottom 20 .

[0031] In the stirring and clarifying process of the present invention, when the sewage is lifted upward by the stirring impeller 8, the process of the sewage entering the second reaction chamber 11 from the first reaction chamber 5 is the same as the process of the traditional mechanical stirring clarifier. In this embodiment, it is not repeated. The innovation of the present invention is that, please refer to the attached Figure 5 As shown, after the sewage enters the second reaction chamber 11, since the second cover body 12 of the present invention is composed of a first cone 12.1 with a conical shape on the top and a second cone 12.2 with an enlarged diameter on the bottom, and a through hole 12.3 is provided on the second cone 12.2, a part of the water flows through the through hole 12.3 to form a horizontal advection and enter the third reaction chamber 14, and a part of the water flows downward along the tangent direction of the inner wall of the second cone 12.2 to impact the active substances at the bottom of the clarification tank body 1, and continue to make the sludge in the water flow and the active substances to react by flocculation, prolonging the contact time of the sludge with the flocculant and increasing the flocculation volume, thereby further enhancing the clarification effect, and the advection along the through hole 12.3 impacts the water flow rising along the third reaction chamber 14, offsetting and reducing the floating active substances, allowing the fluid below the inclined plate 13 of the mechanical acceleration clarification tank to slowly rotate and move upward, which is conducive to the alum flocs to gather and nucleate toward the center of the pool.

[0032] Please continue to refer to the attached Figure 6 As shown, the water flow after the impact continues in the third reaction chamber 14 and rises toward the inclined plate 13. Since the water inlet 13.1 forms an angle of 45° with the horizontal direction along the length direction, the mud residue in the water flow will be blocked by the inner wall of the water inlet 13.1, thereby effectively preventing the mud residue in the water flow from moving toward the water collecting tank 15, thereby making the water entering the water collecting tank 15 clearer and of better quality.

[0033] In summary, the lower part of the second reaction chamber 11 of the present invention is enlarged to allow the fluid to tangentially contact the active substances at the bottom of the pool to form the third reaction chamber 14, thereby prolonging the contact flocculation time and increasing the flocculation volume. A through hole 12.3 is provided on the second vertebral body 12.2. The advection of the through hole 12.3 impacts the water flow rising along the third reaction chamber 14, thereby offsetting and reducing the floating active substances, and allowing the fluid under the inclined plate 13 of the mechanical acceleration clarification tank to slowly flow and rotate upward, which is conducive to the alum flowers to gather and nucleate toward the center of the pool. An inclined plate 13 is provided between the outer wall of the second cover body 12 and the inner wall of the clarification tank body 1. The inclined plate 13 can block the rising mud residue and make the mud residue move to the bottom of the clarification tank, thereby solving the problem of the alum flowers and mud residue being broken and floating.

[0034] It is necessary to further explain the above embodiments that the water inlet process, water outlet process, drug addition process and sludge discharge process of the present invention are consistent with those of a traditional mechanical clarifier, so the embodiments will not repeat the above processes.

[0035] The above-mentioned embodiments only express the specific implementation of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A mechanical accelerated clarifier, comprising a clarifier body (1), a bridge (2) is provided above the clarifier body (1), a stirring motor (3) is fixedly provided on the bridge (2), a first reaction chamber (5) composed of a stirring barrel (4) is provided inside the clarifier body (1), a first cover (6) formed integrally with the stirring barrel (4) is provided at the bottom of the stirring barrel (4), a stirring impeller (8) and a scraper (9) are respectively provided on the stirring shaft (7) of the stirring motor (3), the first cover (6) is fixedly connected to the scraping arm (10) of the scraper (9), a second reaction chamber (11) is provided outside the first reaction chamber (5), the second reaction chamber (11) is surrounded by a second cover (12) fixed on the bridge, an outer wall of the stirring barrel (4) and an outer wall of the first cover (6), and the invention is characterized in that: The second cover body (12) is composed of a first cone (12.1) with a conical top and a second cone (12.2) with an enlarged diameter at the bottom. A through hole (12.3) is provided on the second cone (12.2). An inclined plate (13) is provided between the outer wall of the second cover body (12) and the inner wall of the clarifier body (1). The area below the inclined plate (13) is a third reaction chamber (14). A water collecting trough (15) is provided above the inclined plate (13). The through holes (12.3) are distributed at equal intervals along the circumferential outer wall of the second cone (12.2). The cross section of the inclined plate (13) has a honeycomb-shaped water inlet (13.1), and the water inlet (13.1) forms an angle of 45°-60° with the horizontal direction along the length direction.

2. A mechanical accelerated clarifier according to claim 1, characterized in that: The first cover body (6) is an umbrella-shaped cover body.

3. A mechanical accelerated clarifier according to claim 1, characterized in that: A water inlet pipe (16) is provided on the outer wall of the mixing barrel (4).

4. A mechanical accelerated clarifier according to claim 1, characterized in that: A water outlet pipe (17) is provided on the outer wall of the water collecting tank (15).

5. A mechanical accelerated clarifier according to claim 1, characterized in that: Both the first reaction chamber (5) and the second reaction chamber (11) are provided with a dosing tube (23).

6. A mechanical accelerated clarifier according to claim 1, characterized in that: Sampling tubes (18) are provided on the outer wall of the mixing barrel (4), the outer wall of the second cover (12), and the outer wall of the water collecting tank (15).

7. The mechanical accelerated clarifier according to claim 1, characterized in that: A pull rod (19) is provided between the stirring impeller (8) and the stirring shaft (7).

8. The mechanical accelerated clarifier according to claim 1, characterized in that: A conical bottom (20) is provided below the clarifier body (1), a scraping plate (21) of a scraper (9) is placed in the cavity of the conical bottom (20), and a mud discharge pipe (22) is provided on the outer wall of the conical bottom (20).

Images