CN219901768U

CN219901768U - Novel impeller head

Info

Publication number: CN219901768U
Application number: CN202321238242.5U
Authority: CN
Inventors: 谭垚; 马欣宇; 王义香
Original assignee: Shanghai Ruisi Shipping Technology Co ltd
Current assignee: Shanghai Ruisi Shipping Technology Co ltd
Priority date: 2023-05-22
Filing date: 2023-05-22
Publication date: 2023-10-27
Anticipated expiration: 2033-05-22

Abstract

The utility model relates to the technical field of steel plate surface treatment, in particular to a novel shot blasting impeller, wherein a rotor is arranged in a shell and is connected with an internal driving structure, a bracket is arranged at the periphery of the rotor, a blade is arranged on the bracket, a groove is arranged on one side surface of the blade, and the angle between the blade and the bracket is 25 degrees.

Description

Novel impeller head

Technical Field

The utility model relates to the technical field of steel plate surface treatment, in particular to a novel shot blasting impeller.

Background

In the steel structure, ship construction and maintenance process, shot blasting and rust removal are generally required to be carried out on a large-area butt welding seam area, the efficiency is low in a traditional manual rust removal mode, the damage to human bodies is large, and the shot blasting machine is gradually replaced by a shot blasting robot.

The working principle of the shot blasting robot is that the impeller blades of the shot blasting impeller are rotated to generate centrifugal force, the shots attached to the surfaces of the blades are gradually accelerated, when the shots leave the outer edges of the blades, high speed and free flight are obtained until the shots strike the surfaces of the steel plates, and the rust or surface coating of the steel plates is removed, so that a clean surface and surface roughness are obtained, and a solid foundation is provided for the excellent surface binding force between the subsequent coating and the surfaces of the steel plates.

Therefore, one of the core components of the shot blasting robot is a shot blasting impeller, and the shot blasting impeller is thrown out by the blades at a high speed and then rust removing operation is carried out on the surface. In order to increase the shot-blasting speed and reduce the wear on the blades, curved blades are generally used, the curve of which is designed according to Ke Shili (Coriolis Force) equal to zero or slightly greater than zero. As the shot blasting is driven by the blade, the speed and the direction of the shot blasting are continuously changed along with the curve of the blade, when the speed direction of the shot blasting is consistent with the curve of the blade, the shot blasting is ready to fly out of the blade, and the blade is still curved and rotated according to the original fixed curvature, and the shot blasting flies out according to the first fly out with the large curvature and the second fly out with the small curvature. When the surface of the blade is polished, the friction force is reduced, so that the throwing speed of the projectile is influenced, and the projectile throwing speed is different from the calculation. The premature throwing of the shot blasting can also influence the throwing speed of the shot blasting, so that the shape of the curved blade is correlated, namely, the inclination angle of the blade is required, so that the faster throwing speed can be ensured, and excessive abrasion to the blade can be avoided.

Further, after the abrasive materials enter the airtight space where the impeller wheel is located, the abrasive materials are thrown out at a high speed under the action of high-speed rotation of the impeller wheel blades, and due to the fact that the abrasive materials are more in quantity, the abrasive materials thrown out in the airtight space can slide laterally on the shot blasting surfaces of the impeller wheel blades due to friction, and the abrasive materials are more collided to change the advancing direction, so that it is difficult to ensure that each abrasive material is thrown out in the tangential direction of the impeller wheel exactly.

Based on the reasons, the novel shot blasting impeller is designed, and most of the shot blasting can be performed according to the tangential direction of the impeller by making a unique design on the inclination angle of the shot blasting impeller and reducing the lateral movement of the shot blasting, so that the abrasion to blades is reduced while the discharge speed is ensured, the overall working efficiency is improved, and the maintenance cost is reduced.

Disclosure of Invention

The utility model aims to overcome the defects of the prior art, and provides a novel shot blasting impeller, which enables most of shots to be thrown out according to the tangential direction of the impeller by making a unique design on the inclination angle of the shot blasting impeller and reducing the lateral movement of the shots, so that the throwing speed is ensured, the abrasion to blades is reduced, the overall working efficiency is improved, and the maintenance cost is reduced.

In order to achieve the above purpose, the utility model provides a novel shot blasting impeller which comprises blades, a rotor, a support, a machine shell and grooves, wherein the rotor is arranged in the machine shell and is connected with an internal driving structure, the support is arranged on the periphery of the rotor, the blades are arranged on the support, the grooves are arranged on one side surface of the blades, and the angle between the blades and the support is 25 degrees.

The blades are equally spaced around the support.

The periphery of the surface of the blade with the groove is provided with a frame which is higher than the plane of the groove.

The grooves are longitudinally distributed on the blade.

The groove is arranged on the side of the blade, which forms an included angle of 25 degrees with the bracket.

Compared with the prior art, the utility model ensures that the shot blasting obtains the highest rotation speed in the shortest time and is thrown out along the grooves on the blades by setting the inclination angle of the blades to be 25 degrees, ensures the throwing speed, simultaneously ensures the throwing angle, avoids mutual interference of the shot blasting and abrasion to the blades, improves the working efficiency and reduces the working cost.

Drawings

Fig. 1 is a schematic view of a prior art impeller.

Fig. 2 is a schematic view of an impeller of the present utility model.

Fig. 3 is a top view of an impeller made in accordance with the present utility model.

FIG. 4 is a graph of an analysis of a curvilinear blade in accordance with the present utility model.

FIG. 5 is an analytical view of a pitched blade according to the present utility model.

Reference numerals illustrate:

the rotor is characterized in that the rotor comprises blades 1, rotors 2, a bracket 3, a casing 4 and grooves 5.

Description of the embodiments

The utility model will now be further described with reference to the accompanying drawings.

Referring to fig. 1 to 3, the utility model provides a novel shot blasting impeller which comprises a blade 1, a rotor 2, a bracket 3, a casing 4 and a groove 5, wherein the rotor 2 is arranged in the casing 4 and is connected with an internal driving structure, the bracket 3 is arranged on the periphery of the rotor 2, the blade 1 is arranged on the bracket 3, the groove 5 is arranged on one side surface of the blade 1, and the angle between the blade 1 and the bracket 3 is 25 degrees.

The blades 1 are equally distributed around the support 3.

The side of the blade 1 with the grooves 5 is framed around and above the plane of the grooves 5.

The grooves 5 are distributed longitudinally over the blade 1.

The groove 5 is arranged on the side of the blade 1 with an included angle of 25 degrees with the bracket 3.

Working principle:

when the impeller head is used, excessive debugging is not needed, after the impeller head is opened, the rotor 2 is driven by the internal driving structure to drive the bracket 3 to rotate at a high speed, as the impeller blade 1 and the bracket 3 have an inclination angle of 25 degrees, the impeller cannot generate excessive displacement in the impeller blade 1, the impeller can synchronously rotate at a higher speed with the rotor 2 and approach to the speed of the rotor 2 in a shorter time, friction cannot be caused on the impeller blade 1, the impeller can be thrown out along the groove 5 on the impeller blade 1 when the speed reaches a critical value, the throwing speed at the moment meets the calculation requirement, and the groove 5 can give a relatively stable throwing angle to the impeller.

According to the calculation formula of the arc blade。

The assumption condition of the formula, namely, the Korotkoff force from the origin to the assumed calculation point is zero, because the arc is the circular arc of the single curvature center, the Korotkoff force from the origin to the calculation point is zero, when the projectile enters the impeller blade and is accelerated to the point the same as the absolute speed of the point of the blade, the projectile and the blade are relatively static, the blade curve continues to extend outwards, the projectile can fly away from the free straight line of the blade, further acceleration of the projectile by the blade is not obtained, and the throwing speed is low instead.

The calculation formula of the curvature radius of the curve blade with zero Korotkoff force at each point of the blade is obtained according to the calculation formula, wherein the Korotkoff force is zero, namely the Korotkoff force at each point of the blade is zero, a projectile which is not positioned at the point of the blade automatically changes into the Korotkoff force zero, if the projectile speed is lower than the circumferential speed of the point of the blade, the projectile is driven by the blade to continuously accelerate, the acceleration and the change of the speed direction are both realized by the aid of the Korotkoff force, the Korotkoff force is not zero, and the Korotkoff force is quite large (because the normal speed is changed from zero along with the curve of the blade and is greatly Ke Shili, the Korotkoff force is larger, the normal speed of the straight blade is only changed, the direction is unchanged, and the required Korotkoff force is relatively small), the projectile speed is accelerated simultaneously once the projectile reaches the speed with the Korotkoff force of zero, and the projectile is separated from the blade to fly out by oneself. The blade as a whole is worn out, but is more concentrated and therefore has a great limitation; and the blade wear is small at the beginning, large in the middle, and small at the later point of calculation, as shown in fig. 4, resulting in a large coriolis force in the middle.

According to the method, the distance from the origin to the calculated point is reduced, so that the speed change rate is reduced (namely, the normal force and the normal force are changed), the required Kelvin force is small, and therefore the abrasion of the blade is small. Radius of curvature for zero kohlrabi force setting some "typical points": i.e. calculate＝1.0/>，1.5/>，2.0/>，2.5/>，3.0/>Corresponding->The values = 0,0.84,1.30,1.72,2.12 draw a circular arc, and the intersection points of the lines are connected, and the circular arc is approximately a straight line, as shown in fig. 5, which is the inclined blade baseline. Analysis of fig. 5 shows that: the normal force change rate of the five points 1,2,3,4 and 5 on the base line is small, because the base line direction is not changed, the variation of the Korotkoff force is small in the process of the projectile traveling, and the Korotkoff force is zero when reaching the calculation point. The Korotkoff force of the projectile at each point on the 1-2-3-4-5 base line is basically slightly larger than zero, namely the projectile contacts the surface of the blade, and if the speed of the projectile at the point of the blade is smaller than the circumferential speed of the point of the blade, the projectile can slide along the surface of the blade all the time by the projectile, and the projectile can not leave the blade and fly out freely until the outlet of the blade is thrown, and the speed of the projectile at the outlet meets the requirement.

Through the analysis, the impeller head with the inclined blades is adopted, so that the impeller speed of the impeller head is increased, and the efficiency is improved. According to the theoretical analysis, the existing impeller head is improved and designed, and the inclination angle of the impeller head is approximately 25 degrees as an optimal scheme.

The above is only a preferred embodiment of the present utility model, only for helping to understand the method and the core idea of the present utility model, and the scope of the present utility model is not limited to the above examples, and all technical solutions belonging to the concept of the present utility model belong to the scope of the present utility model. It should be noted that modifications and adaptations to the present utility model may occur to one skilled in the art without departing from the principles of the present utility model and are intended to be within the scope of the present utility model.

According to the utility model, the problems that in the prior art, the impact speed is influenced by the shot blasting when the rotation speed of the shot blasting provided by the blade is insufficient, the angle of the shot blasting blade is accurately adjusted, the shot blasting speed and angle of the shot blasting blade are ensured, the friction to the blade is reduced, the working efficiency is improved, and the maintenance cost is reduced are solved.

Claims

1. The utility model provides a novel impeller wheel, its characterized in that includes blade (1), rotor (2), support (3), casing (4) and slot (5), the internally mounted of casing (4) have rotor (2) and are connected with inside drive structure, install the periphery of rotor (2) support (3), be provided with on support (3) blade (1), a side surface of blade (1) is provided with slot (5), blade (1) with the angle of support (3) is 25 degrees.

2. A new impeller according to claim 1, characterized in that the blades (1) are equally distributed around the support (3).

3. The novel impeller head according to claim 1, characterized in that the face of the blade (1) with the groove (5) is framed around and above the plane of the groove (5).

4. A new impeller according to claim 1, characterized in that the grooves (5) are distributed longitudinally on the blade (1).

5. The novel impeller head according to claim 1, characterized in that the groove (5) is arranged on the side of the blade (1) which forms an angle of 25 degrees with the support (3).