CN214862617U

CN214862617U - Lifting type impeller

Info

Publication number: CN214862617U
Application number: CN202121080169.4U
Authority: CN
Inventors: 赖艳林; 安树波; 童行; 史涛
Original assignee: Milu Fluid Technology Shanghai Co ltd
Current assignee: Milu Fluid Technology Shanghai Co ltd
Priority date: 2021-05-19
Filing date: 2021-05-19
Publication date: 2021-11-26
Anticipated expiration: 2031-05-19

Abstract

The application discloses promotion formula impeller, including (mixing) shaft and a plurality of blades of setting at the (mixing) shaft end, the front end of blade is less than the end of blade, the blade divide into first portion and second part to front end and terminal direction from the intermediate position, along the direction of keeping away from the first portion, the length of second portion reduces gradually, and the edge that the (mixing) shaft was kept away from to the second portion is the arc structure, the opening orientation of arc structure keeps away from the direction of (mixing) shaft, the end of second portion is fillet structure, arc structure and fillet structure smooth connection. In the stirring process, the probability of the floc crushing by the blades is reduced, the time for precipitating the floc in the subsequent process is reduced, and the tail end of the stirring device is easy to generate radial flow so as to improve the liquid discharge capacity and facilitate the internal and external circulation of the material from the guide cylinder. The problem of the edge of the blade of current promotion formula impeller mostly be the edges and corners, be unfavorable for follow-up floc to deposit fast in the sedimentation tank with the floc breakage easily at the stirring in-process is solved.

Description

Lifting type impeller

Technical Field

The present application relates to the field of impeller technology, and more particularly, to a lift impeller.

Background

The impeller is applied to stirring of a flocculation tank of a high-efficiency sedimentation tank, the middle of the tank is provided with the guide cylinder, the impeller generates large liquid discharge amount in the guide cylinder, the large liquid discharge amount is lifted upwards or downwards and is quickly mixed in the guide cylinder, and the flocculate outside the cylinder is accumulated in the tank and circulates outside the cylinder in the guide cylinder, so that PAM (polyacrylamide) agent and return sludge collide for many times to generate large flocculate; and rapidly precipitating in a subsequent sedimentation tank. The edge of the blade of the lifting impeller on the market is usually set to be an edge angle, and the blade is easy to crush flocs in the stirring process, so that the subsequent flocs are not beneficial to rapid precipitation in a precipitation tank.

Therefore, how to solve the edge of the blade of the existing lifting impeller and mostly adopt edges and corners, and the problem that the flocs are broken easily and are not beneficial to the rapid sedimentation of the subsequent flocs in the sedimentation tank in the stirring process is a key technical problem to be solved by technical personnel in the field.

SUMMERY OF THE UTILITY MODEL

For overcoming the problem that exists in the correlation technique at least to a certain extent, the aim at of this application provides a promotion formula impeller, and its edge that can solve current promotion formula impeller's blade is mostly the edges and corners, with the floc breakage easily and be unfavorable for the problem that follow-up floc deposits fast in the sedimentation tank in the stirring process.

The application provides a promotion formula impeller, be in including (mixing) shaft and setting (mixing) shaft terminal a plurality of blades, the front end of blade is less than the end of blade, the blade is divided into first portion and second part from intermediate position to front end and terminal direction, along keeping away from the direction of first portion, the length of second portion reduces gradually, just the second portion is kept away from the edge of (mixing) shaft is the arc structure, the opening orientation of arc structure is kept away from the direction of (mixing) shaft, the end of second portion is fillet structure, the arc structure with fillet structure smooth connection.

Preferably, the blade comprises eight folding surfaces which are sequentially connected into an arc-like structure, a folding line is formed between every two adjacent folding surfaces, the included angle between every two adjacent folding surfaces is 160 degrees and 178 degrees, and the opening of the arc-like structure faces the rotation direction of the impeller.

Preferably, the included angle between the line connecting the lowest point and the highest point of the blade and the axis of the stirring shaft is 25-45 degrees.

Preferably, the edge of the first portion remote from the stirring shaft is an arc-shaped edge bent towards the stirring shaft.

Preferably, the stirring shaft further comprises a hoop for fixing the blades, the hoop is detachably sleeved outside the tail end of the stirring shaft, and the blades are fixed on the hoop.

Preferably, the hoop is a tubular structure consisting of three arc-shaped pieces, one blade is connected outside each arc-shaped piece, and the three arc-shaped pieces are detachably connected through bolts and nuts.

Preferably, the bottom surface of the blade is provided with a reinforcing rib fixedly connected with the hoop.

Preferably, the top end of the stirring shaft is provided with a flange used for being connected with a stirrer, and the position of the stirring shaft close to the top end is provided with a plurality of reinforcing plates connected with the flange.

The technical scheme provided by the application can comprise the following beneficial effects:

the application provides a promotion formula impeller, including (mixing) shaft and a plurality of blades of setting at the (mixing) shaft end, a plurality of blades are around the circumference evenly distributed of (mixing) shaft. The blade is divided into a first part and a second part from the middle position to the front end and the rear end, the edge of the second part far away from the stirring shaft is of an arc structure, and the opening of the arc structure faces the direction far away from the stirring shaft, namely the arc structure is bent towards the direction far away from the stirring shaft; and the tail end of the second part is of a fillet structure, and the arc structure is smoothly connected with the fillet structure. Therefore, in the stirring process, the probability of the blade for crushing the flocs is reduced, and the time for precipitating the flocs in the subsequent process is shortened. And the length of the second part is gradually reduced along the direction far away from the first part, so that the tail end of the second part is easy to generate radial flow during the rotation of the blade to improve the liquid discharge amount. The front end of the blade is lower than the tail end of the blade, so that the blade drives the material to form axial flow in the stirring process, and the material is convenient to circulate inside and outside the guide cylinder.

So set up, the edge of having solved the blade of current promotion formula impeller is mostly the edges and corners, with the floc breakage easily and be unfavorable for the problem that follow-up floc deposits fast in the sedimentation tank in stirring process.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application.

FIG. 1 is a first perspective view of the present lift impeller shown in accordance with certain exemplary embodiments;

fig. 2 is a second perspective view of the present poppet-type impeller shown in accordance with some exemplary embodiments.

In the figure:

1. a flange; 2. a reinforcing plate; 3. a stirring shaft; 4. reinforcing ribs; 5. a bolt; 6. a shaft sleeve; 7. an arc-shaped sheet; 8. a blade; 9. a first portion; 10. a second portion; 11. an arc-shaped structure; 12. a fillet structure; 13. folding the noodles; 14. folding lines; 15. a straight line side.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus consistent with certain aspects of the present application, as detailed in the appended claims.

Referring to fig. 1-2, the present embodiment provides a lifting impeller, which includes a stirring shaft 3 and a plurality of blades 8 disposed at the end of the stirring shaft 3, wherein the plurality of blades 8 are uniformly distributed around the circumference of the stirring shaft 3. The blades 8 are divided into a first part 9 and a second part 10 from the middle position to the front end and the rear end, the edge of the second part 10 far away from the stirring shaft 3 is of an arc structure 11, and the opening of the arc structure 11 faces the direction far away from the stirring shaft 3, namely the arc structure 11 is bent towards the direction far away from the stirring shaft 3; and, the end of the second part 10 is a rounded structure 12, and the arc structure 11 is smoothly connected with the rounded structure 12. Therefore, in the stirring process, the probability of crushing the flocs by the blades 8 is reduced, and the time for precipitating the flocs in the subsequent process is shortened.

And, the length of the second portion 10 is gradually reduced in a direction away from the first portion 9, so that the tip of the second portion 10 is easily subjected to radial flow during rotation of the vane 8 to improve the liquid discharge amount.

It should be noted that the second portion 10 is disposed close to the stirring shaft 3, so that a gap for passing the material is formed outside the second portion 10, thereby forming a radial flow of the material.

Here, the front end of the blade 8 is lower than the tail end of the blade 8, so that during the stirring process, the blade 8 drives the material to form an axial flow, thereby facilitating the material to circulate inside and outside the guide shell.

So set up, the edge of blade 8 of having solved current promotion formula impeller is mostly the edges and corners, with the floc breakage easily and be unfavorable for the problem that follow-up floc deposits fast in the sedimentation tank in stirring process.

In the preferred scheme of this embodiment, blade 8 is including eight folded surfaces 13, and eight folded surfaces 13 connect gradually and form similar arc structure, and blade 8 is similar arc structure promptly to the opening of similar arc structure is towards the direction of rotation of impeller, so that produce the axial flow, realizes the promotion of material.

It should be noted that, when the blade rotates, one surface of the blade 8 facing the rotation direction is a pressed surface, and one surface facing away from the rotation direction is a non-pressed surface, when the blade 8 rotates, the bending direction of the blade 8 is toward the pressed surface of the blade 8, and when the blade 8 rotates, the pressed surface generates axial flow; thereby make behind the blade 8 relative buckling can form the water conservancy diversion effect to the material to form when the atress and push each other, thereby make the material to 8 middle parts gathers of blade, and then make more material deflections be axial flow, and then improve the promotion efficiency of paddle to the material.

Among them, form broken line 14 between two adjacent folded surfaces 13, eight folded surfaces 13 form seven broken lines 14, seven broken lines 14 are equivalent to seven strengthening ribs that are set up on blade 8, make blade 8 produce bigger intensity under the thinner condition.

Moreover, the included angle between two adjacent folding surfaces 13 can be 160 degrees and 178 degrees, preferably 170 degrees, so that the blades 8 can form an arc-like structure conveniently.

Preferably, the seven folding lines 14 are all arranged in parallel, and an included angle exists between the folding line 14 and the radial direction of the stirring shaft 3, so that the folding line 14 is arranged obliquely relative to the stirring shaft 3, and the flow guiding directions of the blades 8 are gathered towards the central position and form a vortex, thereby improving the stirring efficiency of the materials.

It should be noted that the arc-shaped structure 11 may be an arc-like edge, and may be formed by connecting outer edges of the rear four folding surfaces 13, and the outer edges of the rear four folding surfaces 13 are all arc-shaped, and an edge of the folding surface 13 located at the extreme end is an arc-shaped edge.

In this embodiment, an included angle between a connecting line of a lowest point and a highest point of the blade 8 and an axis of the stirring shaft 3 is 25 to 45 degrees, that is, the blade 8 may be 35 degrees, so that axial flow is favorably formed, and the resistance to rotation is smaller.

In this embodiment, the edge of the first portion 9 away from the stirring shaft 3 may be an arc-shaped edge bent toward the stirring shaft 3, so as to further avoid chopping flocs during stirring.

A straight edge 15 is provided at the front end of the first portion 9 near the stirring shaft 3 to match the end of the preceding blade 8, thereby preventing the preceding blade 8 from obstructing the following blade 8 and improving the liquid discharge amount.

In another preferred embodiment of this embodiment, the lifting impeller further includes a hoop for fixing the blades 8, the hoop is detachably sleeved outside the end of the stirring shaft 3, and the blades 8 are fixed on the hoop, so that the detachable connection between the blades 8 and the stirring shaft 3 is realized. Owing to the structure that adopts the staple bolt, the staple bolt encloses the diameter that closes the tubular structure that forms and can carry out corresponding adjustment according to the diameter of the (mixing) shaft 3 of centre gripping, consequently, even when (mixing) shaft 3 has wearing and tearing, the staple bolt also can be fixed and press from both sides tightly (mixing) shaft 3, makes then press from both sides tight back to (mixing) shaft 3 through the staple bolt, and blade 8 can not produce when rotating and rock owing to the clearance.

Wherein, the staple bolt can be for the tubular structure of compriseing three arc pieces 7 to, three arc pieces 7 can be connected through bolt 5 and nut detachably, thereby the dismouting of being convenient for.

The lifting impeller is provided with three blades 8, the three blades 8 are respectively connected outside the three arc-shaped sheets 7, and the three blades 8 are all positioned at the same height of the hoop; when a certain blade 8 has a problem and needs to be replaced, the whole impeller does not need to be replaced completely, and only one blade 8 and the arc-shaped sheet 7 connected with the blade need to be replaced independently.

Preferably, be provided with strengthening rib 4 on the bottom surface of blade 8, strengthening rib 4 and staple bolt fixed connection, because blade 8 when rotating, can gather the material to the center of blade 8, consequently, the folding face 13 that is located the centre can bear bigger pressure, consequently, strengthening rib 4 locates the non-pressure face (the bottom surface) of blade 8, and strengthening rib 4 sets up in the intermediate position department of blade 8 and with blade 8 welding together, here, strengthening rib 4 can set up on the fifth folding face (from the front end to the rear end), can strengthen the compressive capacity who is located middle folding face 13 simultaneously. Like this, improved blade 8's bulk strength to improve the steadiness that blade 8 and staple bolt are connected.

Here, the sectional shape of the reinforcing beads 4 may be triangular.

In some embodiments, the top end of the stirring shaft 3 is provided with the flange 1 for being connected with the stirrer, and the position of the stirring shaft 3 close to the top end is provided with the plurality of reinforcing plates 2, and the plurality of reinforcing plates 2 are connected with the flange 1, so that the stability of the connection of the flange 1 and the stirring shaft 3 is improved.

Here, the plurality of reinforcing plates 2 are uniformly distributed around the circumferential direction of the stirring shaft 3.

In this embodiment, this promotion formula impeller is still including axle sleeve 6, and axle sleeve 6 cover is established at the end of (mixing) shaft 3 to staple bolt detachably sets up on axle sleeve 6, like this, and in order to avoid the staple bolt fastening power great and cause the damage to (mixing) shaft 3.

The lifting impeller provided by the embodiment combines a unique shape structure, can generate a large liquid discharge amount in a guide cylinder or a pool, has small shearing force, and can enable a medicament to be quickly flocculated with sewage without breaking the flocculate. The special multi-folding-face design is adopted, and the triangular overlong reinforcing ribs are combined, so that the blade of the blade can generate higher strength under the condition of being thinner. The blade adopts a folded surface mode, and is thinner, so the material and the processing are cheaper.

It should be noted that the terms "first," "second," and the like, as used herein, are not intended to limit the specific order, but merely to distinguish one element or function from another.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

It is understood that the same or similar parts in the above embodiments may be mutually referred to, and the same or similar parts in other embodiments may be referred to for the content which is not described in detail in some embodiments.

Although embodiments of the present application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present application, and that variations, modifications, substitutions and alterations may be made to the above embodiments by those of ordinary skill in the art within the scope of the present application.

Claims

1. The lifting impeller is characterized by comprising a stirring shaft (3) and a plurality of blades (8) arranged at the tail end of the stirring shaft (3), wherein the front end of each blade (8) is lower than the tail end of each blade (8), each blade (8) is divided into a first part (9) and a second part (10) from a middle position to the front end and the tail end, the length of each second part (10) is gradually reduced along the direction away from the first part (9), the edge, away from the stirring shaft (3), of each second part (10) is in an arc-shaped structure (11), the opening of each arc-shaped structure (11) faces the direction away from the stirring shaft (3), the tail end of each second part (10) is provided with a fillet structure (12), and each arc-shaped structure (11) is smoothly connected with the fillet structure (12).

2. The lift-type impeller as claimed in claim 1, wherein the vane (8) comprises eight folding surfaces (13) connected in sequence in an arc-like structure, a folding line (14) is formed between adjacent folding surfaces (13), the included angle between two adjacent folding surfaces (13) is 160 degrees and 178 degrees, and the opening of the arc-like structure faces the rotation direction of the impeller.

3. The lifting impeller as claimed in claim 2, characterised in that the line between the lowest point and the highest point of the blades (8) encloses an angle of 25-45 degrees with the axis of the stirrer shaft (3).

4. The lifting impeller as claimed in claim 1, characterised in that the edge of the first portion (9) remote from the agitator shaft (3) is an arc-shaped edge curved towards the agitator shaft (3).

5. The lift impeller as claimed in claim 1, further comprising a hoop for fixing the blades (8), the hoop being detachably fitted over the end of the stirring shaft (3), the blades (8) being fixed to the hoop.

6. The lift impeller of claim 5, wherein the anchor ear is a tubular structure consisting of three arc-shaped pieces (7), one vane (8) is connected outside each arc-shaped piece (7), and the three arc-shaped pieces (7) are detachably connected through bolts (5) and nuts.

7. The lift impeller as claimed in claim 5, characterized in that the bottom of the blades (8) is provided with reinforcing ribs (4) which are fixedly connected to the hoops.

8. The lifting impeller as claimed in claim 1, characterised in that the top end of the agitator shaft (3) is provided with a flange (1) for connection to an agitator, and that the agitator shaft (3) is provided, near the top end, with a plurality of reinforcing plates (2) connected to the flange (1).