Air flotation stirring blade convenient to disassemble and assemble

Abstract

The utility model provides an air floatation stirring blade convenient to disassemble and assemble, which relates to the technical field of disassembly and replacement of stirring blades, and comprises a stirring shaft, a blade, a first mounting shell, a second mounting shell, a fixing hole, a fastening hole, a fixing bolt and a fastening screw, according to the device, when a certain group of paddles are damaged, the paddles can be independently disassembled and replaced, so that the stirring shaft and other paddles do not need to be replaced together, meanwhile, the paddles and the stirring shaft are convenient to mount and good in stability, and the device is suitable for being used in a scene with a relatively small stirring area and small resistance; and the maintenance and replacement effects of the stirrer for the air flotation machine are improved.

Description

Technical Field

[0001] This utility model relates to the field of disassembly and replacement technology of agitator blades, and more specifically, to an air flotation agitator blade that can be easily disassembled and installed. Background Technology

[0002] An air flotation (AF) unit mainly consists of three systems: a mixing system, a dissolved air system, and a sludge scraping system. The main reason for requiring a mixing system is to promote a thorough reaction between the chemicals and impurities in the water, thereby improving the AF unit's treatment efficiency.

[0003] The working principle of an air flotation machine is to inject a large number of microbubbles, causing suspended solids to combine with the bubbles and float to the water surface, thereby achieving solid-liquid separation. To ensure better binding of suspended solids with bubbles, flocculation and coagulation aids such as PAC (polyaluminum chloride) and PAM (polyacrylamide) are used. Stirring ensures that these agents are evenly dispersed in the water and react fully with the suspended solids to form flocs that easily combine with the bubbles.

[0004] After the reagent is thoroughly stirred and dissolved, it reacts with the scum in the flotation chamber and rises. At this point, the scum can be removed using a scum scraper.

[0005] Currently, the agitator of an air flotation machine mainly consists of a motor reducer, a reducer mounting frame, a bearing housing, an agitator shaft, and impellers. Under the rotation of the motor reducer, the main shaft generates axial force, which drives the coupling and the agitator shaft to rotate. The shaft stability is increased by the reducer frame and the bearing housing, and the axial force is transmitted to the impellers installed at the bottom of the agitator shaft to perform the work. At the same time, the agitator for air flotation machines is suitable for use in scenarios where the agitation area is small and the resistance is low.

[0006] However, the existing impeller and stirring shaft are connected by welding and cannot be disassembled. If the impeller is damaged and needs to be replaced, the operation is not convenient. The stirring shaft and impeller must be disassembled together and replaced with a new integrated structure. It cannot be separated in parts. Utility Model Content

[0007] The purpose of this invention is to solve the problems mentioned in the background art and to propose an air flotation agitator blade that is easy to disassemble and install.

[0008] The technical solution adopted by this utility model to solve its technical problem is:

[0009] An easily detachable and installable air flotation agitator blade includes an agitator shaft and blades, as well as a first mounting shell, a second mounting shell, fixing holes, fastening holes, fixing bolts, and fastening screws.

[0010] The first mounting shell and the second mounting shell have the same shape and both have a semi-circular arc portion. The arc portion formed by the first mounting shell and the second mounting shell after docking is in close contact with the surface of the stirring shaft.

[0011] Two blades with curved surfaces are inclined and welded directly onto the first mounting housing and the second mounting housing;

[0012] Several fixing holes are arranged in a row and symmetrically opened on the first mounting shell and the second mounting shell;

[0013] Two fastening holes are respectively provided on the semi-circular arc portion of the first mounting shell and the second mounting shell;

[0014] Several fixing bolts pass sequentially through fixing holes on the first mounting shell and the second mounting shell;

[0015] The fastening screw is threaded into the fastening hole, and the end of the fastening screw is in contact with the surface of the stirring shaft.

[0016] Furthermore, a magnet is fixed on the first mounting shell, which is in contact with the surface of the stirring shaft and is flush with the inner wall surface of the semi-circular part of the first mounting shell.

[0017] The above solution allows the first mounting shell to be attracted to the stirring shaft after contact with the semi-circular part of the first mounting shell using a magnet. Subsequently, it is only necessary to hold the second mounting shell and connect it with the first mounting shell to fix it (to avoid shaking back and forth during the connection process). After all the fastening screws and fixing bolts have been removed, it is only necessary to apply outward force to separate the first mounting shell from the stirring shaft.

[0018] Furthermore, limiting components are provided on the first mounting shell and the second mounting shell.

[0019] Furthermore, the limiting component includes a first positioning block, a slot, a second positioning block, and an insert block. The first positioning block is symmetrically fixed on the first mounting shell and has a slot. The second positioning block is symmetrically fixed on the second mounting shell and is distributed opposite to the first positioning block. The second positioning block is provided with insert blocks that are distributed opposite to the slots.

[0020] Furthermore, the main body shape of the slot and the plug is rectangular.

[0021] The above solution, through the design of rectangular slots and rectangular inserts in the limiting component, can accurately complete the docking and assembly between the two mounting shells in one go, without the need for repeated adjustments to align several fixing holes, thus making the blade installation process more efficient.

[0022] Furthermore, the blades are provided with several through holes.

[0023] The above solution involves creating through holes in the base where the blades are installed at an angle and have an arc, which can further reduce the resistance during the mixing process.

[0024] Compared with the prior art, the beneficial effects of this utility model are:

[0025] Compared to existing technologies, this device allows for individual disassembly and replacement of a damaged set of blades, eliminating the need to replace the mixing shaft and other blades together. Furthermore, the installation of the blades and mixing shaft is convenient and stable, making it suitable for use in scenarios with small mixing areas and low resistance. This improves the maintenance and replacement efficiency of the agitator in the air flotation machine. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0027] Figure 2 for Figure 1 Enlarged view of section A (labeled A);

[0028] Figure 3 This is a schematic diagram of the fixing holes and fastening holes;

[0029] Figure 4 A schematic diagram showing the installation of the first and second positioning blocks;

[0030] Figure 5 This is a schematic diagram of the installation of the limit component;

[0031] Figure label:

[0032] 1. Stirring shaft; 2. First mounting shell; 3. Second mounting shell; 4. Paddle; 5. Fixing hole; 6. Fastening hole; 7. Fixing bolt; 8. Magnet; 9. First positioning block; 10. Rectangular groove; 11. Second positioning block; 12. Rectangular block. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model. The present utility model will be further described with reference to the accompanying drawings and embodiments:

[0034] like Figures 1 to 3 As shown, an air flotation agitator blade that can be easily disassembled and installed includes an agitator shaft 1, a first mounting shell 2, a second mounting shell 3, a blade 4, a fixing hole 5, a fastening hole 6, a fixing bolt 7, and fastening screws (the fastening screws are not shown in the figure).

[0035] The first mounting shell 2 and the second mounting shell 3 have the same shape and both have a semi-circular arc portion (the semi-circular arc portion is shown in the figure but is not labeled). The arc portion formed by the first mounting shell 2 and the second mounting shell 3 after docking is tightly attached to the surface of the stirring shaft 1.

[0036] Two blades 4 with curved surfaces are inclined and welded directly onto the first mounting shell 2 and the second mounting shell 3;

[0037] A number of fixing holes 5 are arranged in a row and symmetrically opened on the first mounting shell 2 and the second mounting shell 3;

[0038] Two fastening holes 6 are respectively opened on the semi-circular arc portion of the first mounting shell 2 and the second mounting shell 3;

[0039] Several fixing bolts 7 pass through the fixing holes 5 on the first mounting shell 2 and the second mounting shell 3 in sequence;

[0040] The fastening screw is threaded into the fastening hole 6, and the end of the fastening screw is in contact with the surface of the stirring shaft 1.

[0041] In a further refinement of the embodiment of this utility model, several through holes are provided on the blade, which are not shown in the figure.

[0042] The working process of this utility model is as follows:

[0043] First, symmetrically align the first mounting shell 2 and the second mounting shell 3 in the designated area of ​​the stirring shaft 1 (multiple sets can be installed on the stirring shaft 1, preferably two sets). Then, use fixing bolts 7 to pass through the fixing holes 5 on the two mounting shells to achieve multiple fixation between the mounting shells and the stirring shaft 1. At this time, the semi-circular part is tightly fitted with the stirring shaft 1. After the fixing bolts 7 are installed, use fastening screws to pass through the fastening holes 6 and press against the surface of the stirring shaft 1. This can prevent the stirring shaft 1 from slipping between the mounting shell and the blade 4 during subsequent use, thus achieving a set screw effect.

[0044] Secondly, the inclined installation and curved shape of the blade 4 can reduce the resistance during the stirring process. On this basis, the resistance is further reduced by opening through holes.

[0045] When the blade 4 needs to be replaced, simply loosen the fastening screws and fixing bolts 7 in sequence to achieve quick separation between the stirring shaft 1 and the mounting shell. This eliminates the need to replace the entire stirring shaft 1 and blade 4. Only the damaged set of blades 4 needs to be replaced, allowing for partial disassembly and separation.

[0046] Compared to existing technologies, this device allows for individual disassembly and replacement of a single set of blades 4 when damaged, eliminating the need to replace the stirring shaft 1 and other blades 4 together. Furthermore, the installation of blades 4 and stirring shaft 1 is convenient and stable, making it suitable for use in scenarios with small stirring areas and low resistance. This improves the maintenance and replacement efficiency of the agitator used in the air flotation machine.

[0047] In other embodiments, such as Figure 4 As shown, a magnet 8 is fixed on the first mounting shell 2, which is in contact with the surface of the stirring shaft 1 and is flush with the inner wall surface of the semi-circular part of the first mounting shell 2. In this embodiment, the magnet 8 can be used to attract the stirring shaft 1 after the semi-circular part of the first mounting shell 2 comes into contact with the stirring shaft 1. Afterwards, it is only necessary to hold the second mounting shell 3 and fix it to the first mounting shell 2 (to avoid back and forth shaking during the docking process). After the fastening screws and fixing bolts 7 are removed, it is only necessary to apply outward force to separate the first mounting shell 2 from the stirring shaft 1.

[0048] In other embodiments, such as Figure 5 As shown, limit components are provided on the first mounting shell 2 and the second mounting shell 3;

[0049] In a further refinement of the above embodiment, the limiting component includes a first positioning block 9, a slot 10, a second positioning block 11, and an insert 12. The first positioning block 9 is symmetrically fixed on the first mounting shell 2, and the first positioning block 9 is provided with a slot 10. The second positioning block 11 is symmetrically fixed on the second mounting shell 3 and is distributed one-to-one with the first positioning block 9. The second positioning block 11 is provided with an insert 12 that is distributed one-to-one with the slot 10.

[0050] Preferably, the main body shape of the slot 10 and the insert 12 is rectangular; this embodiment can accurately complete the docking assembly between the two mounting shells in one go by designing the rectangular slot and rectangular insert in the limiting component, without the need for repeated adjustments to align several fixing holes 5, thus making the installation process of the blade 4 more efficient.

[0051] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The descriptions of the above embodiments and specifications are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection claimed by this utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A gas floatation stirring paddle which can be easily attached and detached, comprising a stirring shaft (1) and a paddle (4), characterized in that, It also includes a first mounting shell (2), a second mounting shell (3), a fixing hole (5), a fastening hole (6), a fixing bolt (7) and a fastening screw, The first mounting shell (2) and the second mounting shell (3) are identical in shape and each is formed with a semicircular arc portion, and the arc portion formed after the abutment of the first mounting shell (2) and the second mounting shell (3) is closely fitted to the surface of the stirring shaft (1); Two paddle blades (4) with curved surfaces are obliquely and oppositely welded to the first mounting shell (2) and the second mounting shell (3); A plurality of fixing holes (5) are symmetrically arranged in rows on the first mounting shell (2) and the second mounting shell (3); Two fastening holes (6) are respectively arranged on the semicircular arc portions of the first mounting shell (2) and the second mounting shell (3); A plurality of fixing bolts (7) sequentially pass through the fixing holes (5) on the first mounting shell (2) and the second mounting shell (3); The fastening screw is threadedly connected with the fastening hole (6), and the end of the fastening screw is in contact with the surface of the stirring shaft (1).

2. The detachably mountable gas floatation stirring paddle according to claim 1, characterized in that, The first mounting shell (2) is fixed with a magnet (8) which is fitted to the surface of the stirring shaft (1) and is flush with the inner wall surface of the semicircular arc portion of the first mounting shell (2).

3. The detachably mountable gas floatation stirring paddle according to claim 1, wherein The first mounting shell (2) and the second mounting shell (3) are provided with a limiting assembly.

4. The detachably mountable gas floatation stirring paddle according to claim 3, wherein The limiting assembly includes a first positioning block (9), a slot (10), a second positioning block (11) and a plug (12), the first positioning block (9) is symmetrically fixed on the first mounting shell (2), and the slot (10) is arranged on the first positioning block (9), the second positioning block (11) is symmetrically fixed on the second mounting shell (3) and is oppositely distributed with the first positioning block (9), and the plug (12) is arranged on the second positioning block (11) and oppositely distributed with the slot (10).

5. The detachably mountable gas flotation paddle according to claim 4, characterized in that The main body shape of the slot (10) and the plug (12) is rectangular.

6. The detachably mountable gas flotation paddle according to claim 1, characterized in that, A plurality of through holes are arranged on the paddle blade (4).

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