Grid mixer applied to raw water coagulation device

Abstract

The utility model discloses a grid mixer applied to a raw water coagulation device, which structurally comprises a main frame plate, a plurality of first blades are arranged in the main frame plate at equal intervals, and a gap between every two first blades forms a liquid passing channel with uniform width. A second blade is arranged between every two adjacent first blades in the main frame plate; when water passes through the first coagulation channel or the second coagulation channel, speed differences are generated due to different opening angles, vortexes are generated due to different intervals of the speed differences, so that collision of particles in the water body is promoted, the passive flocculation effect is achieved, and the passive flocculation device is applied to an existing raw water coagulation device to replace mechanical coagulation of a stirring machine. And the use energy consumption and the production cost of the raw water coagulation device are effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of raw water coagulation, and more specifically, to a grid mixer applied to a raw water coagulation device. Background Art

[0002] There are two main coagulation methods in the existing raw water coagulation process, mechanical coagulation and mixing and pipeline static mixer coagulation. Most domestic water plants use mechanical coagulation and mixing, specifically (see the appendix of the specification of this application document Figure 4 ), the dosing point is set in the mixing chamber B, the inner diameter of the PVC closed tube is 40mm, and holes are opened on the tube for uniform drug discharge, and it is used in conjunction with a mixer. This method of dosing and the mixer can make the PAC agent and water fully mixed; although the advantage of the mechanical coagulation and stirring method is that it can quickly achieve sufficient mixing and adapt to mixing reactions under various water conservancy conditions, its disadvantages are high energy consumption and high production costs. Utility Model Content

[0003] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a grid mixer applied to a raw water coagulation device to solve the above technical problems.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a grid mixer applied to a raw water coagulation device, comprising a main frame plate, a plurality of first blades are arranged equidistantly and at intervals in the main frame plate, the gap between every two first blades forms a liquid passage with uniform width, and a second blade is arranged between every two adjacent first blades in the main frame plate.

[0005] The utility model is further configured as follows: each first blade and each second blade are tilted and have the same tilt angle, and the tilt direction of the second blade is opposite to the tilt direction of the first blade.

[0006] The utility model is further configured that: a first coagulation channel and a second coagulation channel are respectively formed between the second blade and two adjacent first blades.

[0007] The utility model is further configured as follows: the inclination angle of the first blade or the second blade is 15-30°.

[0008] The utility model is further configured as follows: a plurality of reinforcing ribs are welded on the main frame plate at equal distances and intervals, and matching embedding grooves are provided at the corresponding positions of the first blades and the second blades.

[0009] The utility model is further configured as follows: the spacing between adjacent reinforcing ribs is 80-120 mm.

[0010] The utility model is further configured as follows: positioning grooves are provided on the inner top surface and the inner bottom surface of the main frame plate at positions corresponding to the first blades and the second blades.

[0011] The utility model is further configured as follows: two pull rings are arranged on the top of the main frame plate.

[0012] In summary, the utility model has the following beneficial effects: when raw water passes through the first coagulation channel or the second coagulation channel, a speed difference is generated due to different opening angles, and the speed difference at different intervals will generate vortices to promote the collision of particles in the water body, thereby achieving the effect of passive flocculation. The utility model is applied to the existing raw water coagulation device to replace the mechanical coagulation of the mixer, effectively reducing the energy consumption and production costs of the raw water coagulation device. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0014] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0015] Figure 2 It is a schematic cross-sectional view of the structure of the utility model;

[0016] Figure 3 for Figure 2 A magnified schematic diagram of the local structure at F in the middle;

[0017] Figure 4 This is a schematic diagram of the structure of the prior art raw water coagulation device of the utility model;

[0018] Figure 5 This is a schematic diagram of the use of the grid mixer of the utility model.

[0019] Figure numerals: 1, main frame plate; 10, first blade; 11, liquid passage; 2, second blade; 20, first coagulation passage; 21, second coagulation passage; 3, reinforcing rib; 30, matching groove; 31, positioning groove; 4, pull ring. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1-5 As shown, a grid mixer applied to a raw water coagulation device according to an embodiment of the utility model comprises a main frame plate 1, in which a plurality of first blades 10 are arranged equidistantly and at intervals, a gap between every two first blades 10 forms a liquid passage 11 with uniform width, and a second blade 2 is arranged between every two adjacent first blades 10 in the main frame plate 1.

[0022] When using, refer to the instructions for Figure 4 The existing raw water coagulation device includes a main chamber A, and the raw water coagulation device is located outside the main chamber A and has a plurality of mixing chambers B distributed therein, and a fluid channel C is formed between each mixing chamber B and the main chamber A, and each mixing chamber B is equipped with a dosing diffuser, and the mixing chamber B also has a condensed water discharge port D, and the grid mixer of the utility model is placed at each fluid channel C and the condensed water discharge port D of each mixing chamber B;

[0023] During operation, external water enters the main chamber A of the raw water coagulation device through the water inlet pipe, and the raw water overflows from the top of the main chamber A into the fluid channel C. At this time, the raw water contacts the grid mixer located at the fluid channel C, and the raw water realizes the first passive coagulation. Then, the raw water reaches the mixing chamber B through the fluid channel C and is mixed with the reagent. The raw water mixed with the reagent is discharged from the condensed water discharge port D. When the raw water is discharged from the condensed water discharge port D, it contacts another grid mixer at the condensed water discharge port D and realizes the second passive coagulation.

[0024] The first coagulation of the raw water by the grid mixer causes the water to generate a vortex and maintain this state before entering the mixing chamber B, so that the raw water contacts the reagent in the best state. The second coagulation of the raw water by the grid mixer ensures that the raw water and the reagent are fully mixed.

[0025] The utility model is applied to the existing raw water coagulation device, and the passive coagulation of the grid mixer replaces the mechanical coagulation of the existing mixer, so as to effectively reduce the energy consumption and production cost of the raw water coagulation device (the rated power of the motor of a single mixer is 11kW, the actual operating power is 9.47kW, and the production electricity is 0.8 yuan / kWh, that is, a single mixer saves 24×9.47×0.8=181.8 yuan in electricity bills per day. Based on the normal water plant inflow of 240,000 tons, 4 mixers need to be turned on, and the electricity bill per day is about 181.8×4=727 yuan. The number of days per year when the water quality is suitable for the channel mixer is about 315 days, 727×315=229098 yuan).

[0026] Each first blade 10 and second blade 2 is tilted and has the same tilt angle. The tilt direction of the second blade 2 is opposite to that of the first blade 10. A first coagulation channel 20 and a second coagulation channel 21 are formed between the second blade 2 and two adjacent first blades 10, respectively.

[0027] When in use, when raw water passes through the first coagulation channel 20 or the second coagulation channel 21, a speed difference is generated due to different opening angles, and the speed difference at different intervals will generate eddies to promote the collision of particles in the raw water, thereby achieving a flocculation effect;

[0028] In daily use, the number of the first blades 10 or the second blades 2 may be increased, or the distance between the blades may be changed to adjust the mixing effect.

[0029] The inclination angle of the first blade 10 or the second blade 2 is 15-30°.

[0030] When in use, the inclination angle of the first blade 10 or the second blade 2 of the utility model is preferably 15°.

[0031] A plurality of reinforcing ribs 3 are welded on the main frame plate 1 at equal intervals. The reinforcing ribs 3 are provided with matching embedding grooves 30 at corresponding positions of the first blades 10 and the second blades 2 .

[0032] When in use, the overall frame strength of the grid mixer and the water flow impact resistance of the first blade 10 and the second blade 2 are improved by providing the reinforcing ribs 3;

[0033] The matching groove 30 is provided to improve the matching effect between the reinforcing rib 3 and the first blade 10 or the second blade 2 , and at the same time facilitates the welding of the reinforcing rib 3 and the first blade 10 or the second blade 2 .

[0034] The spacing between adjacent reinforcing ribs 3 is 80-120 mm.

[0035] When in use, the spacing between the reinforcing ribs 3 of the utility model is preferably 100 mm.

[0036] Positioning grooves 31 are provided on the inner top surface and the inner bottom surface of the main frame plate 1 at positions corresponding to the first blades 10 and the second blades 2 .

[0037] When in use, the positioning groove 31 is provided to effectively improve the connection strength between the two ends of the first blade 10 or the second blade 2 and the main frame plate 1 , and facilitate welding between the first blade 10 or the second blade 2 and the main frame plate 1 .

[0038] Two pull rings 4 are provided on the top of the main frame plate 1 .

[0039] When in use, the pull ring 4 is provided to provide a stable fulcrum point for daily use of the grid mixer;

[0040] Furthermore, the grid mixer of the utility model has a variety of combinations when applied to the raw water coagulation device. Figure 5 At least two grid mixers can be placed at intervals at the fluid channel C and the condensate discharge port D. Taking the arrangement of two grid mixers as an example, the two grid mixers are connected as shown in the attached manual. Figure 5 The first (two grid mixers are set in mirror image) or the second (two grid mixers are set in horizontal and vertical offset) installation arrangement method, different arrangement methods make the water body subject to different forms of passive coagulation, thereby effectively improving the coagulation effect of the grid mixer group on the water body; different numbers of grid mixers have a variety of combinations and arrangements, with high flexibility in use.

[0041] It should also be pointed out that the terms used in the present invention, such as “front”, “rear”, “vertical”, “horizontal”, etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are only used to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention.

[0042] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A grid mixer used in a raw water coagulation device, characterized in that: The invention comprises a main frame plate (1), wherein a plurality of first blades (10) are arranged in equal intervals and at intervals in the main frame plate (1), a gap between every two first blades (10) forms a liquid passage (11) of uniform width, and a second blade (2) is arranged between every two adjacent first blades (10) in the main frame plate (1).

2. The grid mixer used in the raw water coagulation device according to claim 1, characterized in that: The first blades (10) and the second blades (2) are arranged to be inclined and have the same inclination angle, and the inclination direction of the second blades (2) is opposite to the inclination direction of the first blades (10).

3. The grid mixer used in the raw water coagulation device according to claim 1 or 2, characterized in that: A first coagulation channel (20) and a second coagulation channel (21) are respectively formed between the second blade (2) and two adjacent first blades (10).

4. The grid mixer used in the raw water coagulation device according to claim 3, characterized in that: The inclination angle of the first blade (10) or the second blade (2) is 15-30°.

5. The grid mixer used in the raw water coagulation device according to claim 1, characterized in that: A plurality of reinforcing ribs (3) are welded on the main frame plate (1) at equal distances and intervals, and the reinforcing ribs (3) are provided with matching embedding grooves (30) at corresponding positions of each first blade (10) and second blade (2).

6. The grid mixer used in the raw water coagulation device according to claim 5, characterized in that: The spacing between adjacent reinforcing ribs (3) is 80-120 mm.

7. The grid mixer used in the raw water coagulation device according to claim 1, characterized in that: Positioning grooves (31) are provided on the inner top surface and the inner bottom surface of the main frame plate (1) at positions corresponding to the first blades (10) and the second blades (2).

8. The grid mixer used in the raw water coagulation device according to claim 1, characterized in that: The top of the main frame plate (1) is provided with two pull rings (4).

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