CN214486586U

CN214486586U - Magnetic powder mixing stirrer

Info

Publication number: CN214486586U
Application number: CN202120439215.9U
Authority: CN
Inventors: 刘鸿刚; 刘树旭; 兰文辉
Original assignee: Jilin Kewt Mechanical And Electrical Equipment Co ltd
Current assignee: Jilin Kewt Mechanical And Electrical Equipment Co ltd
Priority date: 2021-03-01
Filing date: 2021-03-01
Publication date: 2021-10-26
Anticipated expiration: 2031-03-01

Abstract

The utility model relates to a magnetic powder mixing stirrer, which comprises a stirring tank body, wherein the stirring tank body consists of a cylindrical section at the upper part and a conical section at the lower part, a powder inlet, an additive nozzle and a motor reducer are arranged above the stirring tank body, a discharge port ball valve is fixedly connected with the bottom end of the stirring tank body, a spiral stirring shaft is arranged inside the stirring tank body, one end of the spiral stirring shaft is connected with the output end of the motor reducer, the other end of the spiral stirring shaft is movably connected with the bottom part of the stirring tank body through a sliding sleeve, the spiral stirring shaft penetrates through and is fixedly connected with a spiral sheet, a certain number of cooling nozzles are arranged at the conical section at the lower part of the stirring tank body, the cooling nozzles are distributed in three layers from top to bottom along the conical section, the cooling nozzles at each layer are uniformly distributed along the circumference direction, and the mixing stirrer passes through an improved cooling structure, an additive mode and a stirring structure, can improve the efficiency of compounding, the cooling is even rapidly, improves the homogeneity of adding the agent.

Description

Magnetic powder mixing stirrer

Technical Field

The utility model relates to a mixed field of magnetic trade magnetic, especially a mixed mixer of magnetic.

Background

In the powder production process in the magnetic powder industry, powder discharged by the same batch of magnetic powder at different time is influenced by the manufacturing process of equipment, the particle size distribution has fluctuation in a certain range, and the uniformity of the particle size distribution of the powder filled into the turnover material tank has great influence on the consistency of magnet products, so that the used powder is mixed and stirred in the production process. At present, three-dimensional mixing mixers and double-cone mixing mixers are generally used for mixing and stirring in the production process, and the mixing and stirring weight is about 200-600 Kg. Because the magnetic powder has poor fluidity and a liquid additive is required to be added to improve the physical properties of materials during mixing, the existing mixing machine has the problems of insufficient and uneven mixing and difficult powder discharge. In addition, in order to improve the mixing uniformity, the mixing and stirring time is relatively long, generally more than two hours, and even some mixing time is as long as five hours. The powder particles rub each other during mixing and stirring, so that the temperature of the mixed material rises, the activity of the material is enhanced, the next operation of the material is not facilitated, and meanwhile, the material is not uniformly oxidized, so that the performance of the final product is reduced. The temperature in the stirring tank is generally in gradient distribution, the temperature close to the stainless steel outer surface of the mixing and stirring tank is similar to the cooling temperature of the tank body, the temperature from the surface of the mixing and stirring tank to a central transition region is generally 15-80 ℃, and the highest temperature of a central region can reach 220 ℃. Because of the structure of the mixing stirring tank, the surface of the general stirring tank is cooled by adopting local water cooling or air cooling, but the heat transfer effect of powder is poor, the heat resistance of a transition region from the surface of the tank to the center is obvious, and the heat dissipation effect is poor; the powder is at the mixing and stirring in-process, and the powder in the mixing and stirring jar will add the performance that liquid additive improves the magnet product, needs the atomizing to guarantee the homogeneity of adding the agent when adding the agent to carry out quantization control to adding the dose, thereby guarantee the performance of magnet, but now add agent atomizer in the use, have remaining liquid can flow in the agitator tank, influence the homogeneity of adding the agent.

The particle size distribution uniformity of the mixed powder is ensured on the existing basis due to the condition limitation of the mixing and stirring tank, the mixing efficiency is improved, and the stirring structure, the cooling structure and the additive adding mode of the mixing and stirring machine are improved and enhanced as necessary.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a magnetic mixing stirrer, this mixing stirrer can improve the efficiency of compounding through modified cooling structure, additive mode, stirring structure, and the cooling is rapidly even, improves the homogeneity that adds the agent.

In order to achieve the above purpose, the following technical scheme is provided:

a magnetic powder mixing stirrer comprises a stirring tank body, wherein the stirring tank body consists of a cylindrical section at the upper part and a conical section at the lower part, a powder inlet, an additive nozzle and a motor reducer are arranged above the stirring tank body, a discharge port ball valve is fixedly connected to the bottom end of the stirring tank body, a spiral stirring shaft is arranged in the stirring tank body, one end of the spiral stirring shaft is connected with the output end of the motor reducer, the other end of the spiral stirring shaft is movably connected to the bottom of the stirring tank body through a sliding sleeve, the spiral stirring shaft penetrates through and is fixedly connected with a spiral sheet, the additive nozzle structure comprises an additive hand ball valve, an additive valve seat, an additive pipe and an additive spray head, the additive valve seat is fixedly connected with a pipeline protruding from the top of the stirring tank body, the additive pipe penetrates through the additive valve seat and is fixedly connected with the additive valve seat, the additive hand ball valve, the additive pipe and the additive spray head are sequentially and fixedly connected and communicated from top to bottom, the cooling nozzle of a certain amount is installed to the circular cone section of agitator tank body lower part, the cooling nozzle is the three-layer distribution along circular cone section top-down, and every layer of cooling nozzle is along circumferencial direction week equipartition, the cooling nozzle structure includes cooling nozzle seat, nozzle body, sealing washer, pneumatic joint, cooling nozzle seat and agitator tank body fixed connection, the nozzle body runs through cooling nozzle seat and its tip and stretches into agitator tank internal portion, the sealing washer is installed with the combination department of cooling nozzle seat to the nozzle body, pneumatic joint fixed connection is in the other end of nozzle body, the nozzle body is equipped with the cooling nozzle hole that link up.

Preferably, the centerline of the cooling nozzle orifice outlet is at an angular angle to the centerline of the nozzle body.

Preferably, the nozzle body and the cooling nozzle seat are connected in a positioning fit mode through positioning pins.

Preferably, the distribution of the spiral sheet is non-equidistant spiral distribution, and the overall shape of the spiral sheet is a conical structure.

Preferably, the lower part of the additive pipe is provided with an additive valve core, the additive valve core is a circular through hole, the diameter of the through hole is larger than that of the inner hole of the additive pipe, and the upper part of the additive spray head is positioned in the additive valve core.

The utility model has the advantages that:

1. the utility model discloses a non-equidistance spiral distribution's flight, very big improvement the stirring performance of mixer, improved the homogeneity that the material mixes.

2. The utility model discloses a what be equipped with adds the agent nozzle, the joining liquid additive that can the quantization control has improved the performance of magnet product, has guaranteed the homogeneity that adds the agent.

3. The utility model discloses a cooling nozzle that is equipped with at the conical section of agitator tank body, it is corresponding with the overheated area of compounding in-process just, can directly cool down to the material of inside and prevent the oxidation, avoided jar external cooling material, the heat transfer effect is poor, the obscure problem of radiating effect.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of the additive-adding nozzle of the present invention;

FIG. 3 is a schematic view of a cooling nozzle according to the present invention;

the reference symbols shown in the figures are: 1-stirring tank body, 2-powder inlet, 3-additive nozzle, 4-motor reducer, 5-discharge port ball valve, 6-spiral stirring shaft, 7-spiral blade, 8-cooling nozzle, 301-additive hand ball valve, 302-additive valve seat, 303-additive pipe, 304-additive sprayer, 305-additive valve core, 801-cooling nozzle seat, 802-nozzle body, 803-sealing ring, 804-pneumatic connector, 805-positioning pin and 806-cooling nozzle hole.

Detailed Description

The following describes the present design in detail with reference to the accompanying drawings.

As shown in fig. 1 to 3, a magnetic powder mixing stirrer comprises a stirring tank body 1, wherein the stirring tank body 1 is composed of an upper cylindrical section and a lower conical section, a powder inlet 2, an additive nozzle 3 and a motor reducer 4 are arranged above the stirring tank body 1, a discharge port ball valve 8 is fixedly connected to the bottom end of the stirring tank body 1, a spiral stirring shaft 6 is arranged inside the stirring tank body 1, one end of the spiral stirring shaft 6 is connected with an output end of the motor reducer 4, the other end of the spiral stirring shaft is movably connected to the bottom of the stirring tank body 1 through a sliding sleeve, the spiral stirring shaft 6 penetrates through and is fixedly connected with a spiral sheet 7, wherein the additive nozzle 3 structurally comprises an additive hand ball valve 301, an additive valve seat 302, an additive pipe 303 and an additive spray head 304, the additive valve seat 302 is fixedly connected with a raised pipeline at the top of the stirring tank body 1, and the additive pipe 303 penetrates through and is fixedly connected with the additive valve seat 302, the agent adding hand ball valve 301, the agent adding pipe 303 and the agent adding spray head 304 are sequentially and fixedly connected from top to bottom and are communicated, a certain number of cooling nozzles 8 are installed on a conical section at the lower part of the stirring tank body 1, the cooling nozzles 8 are distributed in three layers along the conical section from top to bottom, the cooling nozzles 8 on each layer are uniformly distributed along the circumference direction, the cooling nozzle 8 structurally comprises a cooling nozzle seat 801, a nozzle body 802, a sealing ring 803 and a pneumatic connector 804, the cooling nozzle seat 801 is fixedly connected with the stirring tank body 1, the nozzle body 802 penetrates through the cooling nozzle seat 801, the end part of the nozzle body 802 extends into the stirring tank body 1, the sealing ring 803 is installed at the joint of the nozzle body 802 and the cooling nozzle seat 801, the pneumatic connector 804 is fixedly connected to the other end of the nozzle body 802, and the nozzle body 802 is provided with a through cooling nozzle hole 806.

Wherein, the central line of the outlet of the cooling nozzle hole 806 forms a certain angle with the central line of the nozzle body 802.

The nozzle body 802 and the cooling nozzle seat 801 are connected in a positioning fit manner through a positioning pin 805.

Wherein, the distribution of the spiral sheet 7 is non-equidistant spiral distribution, and the whole shape of the spiral sheet 7 is a cone-shaped structure.

The lower part of the dosing pipe 303 is provided with a dosing valve core 305, the dosing valve core 305 is a circular through hole, the diameter of the through hole is larger than that of an inner hole of the dosing pipe 303, and the upper part of the dosing nozzle 304 is positioned in the dosing valve core 305.

Wherein, the motor reducer 4 controls the rotating speed by a frequency converter.

Wherein, the two ends of the spiral stirring shaft 6 are connected with each other by sealing structures, so as to prevent powder from entering the rotor parts at the two ends and prevent leakage when nitrogen is filled.

Examples

When the utility model is applied, magnetic powder is added from a powder inlet 2, a motor reducer 4 is started to drive a spiral stirring shaft 6 to rotate, mixing is started, meanwhile, atomized liquid additive is added from an additive nozzle 3 to improve the performance of a magnet product, an additive valve core 305 can effectively fill the space in an additive pipe 303, excessive liquid is prevented from flowing into a stirring tank body 1 after the addition is stopped, an additive hand ball valve 301 is opened, an additive sprayer 304 can evenly spray the atomized quantitative liquid additive into the stirring tank body 1 under the thrust of a pump, a cooling nozzle 8 is used for introducing nitrogen to start cooling in a conical section at the lower part of the stirring tank body 1, the spray angle of the cooling nozzle 8 corresponds to the overheating interval of the powder in the mixing process, the angle of the cooling nozzle 8 on each mounting position is different, and the wrong mounting of the cooling nozzle seat 801 and a nozzle body 802 is prevented by a positioning pin 803, powder and the upper portion that cooling nitrogen gas transported of 1 lower part of agitator tank body through the high-speed rotation of flight 7 to scatter the powder, the powder begins at agitator tank body 1 inner loop, because the pitch of flight 7 is pitch variation, also mixing that does not stop at the in-process of powder upward movement, discharge gate ball valve 5 is opened after the compounding is accomplished, reverse spiral (mixing) shaft 6, the counter rotation of flight 7 makes the powder discharge by discharge gate ball valve 5, powder exhaust difficulty has been solved.

Claims

1. The utility model provides a magnetic powder mixing stirrer, its characterized in that, includes the agitator tank body, the agitator tank body comprises cylinder section on upper portion and the circular cone section of lower part, the top of the agitator tank body is equipped with powder entry, dosing nozzle and motor speed reducer, the bottom fixedly connected with discharge gate ball valve of the agitator tank body, the agitator tank internal portion is equipped with spiral (mixing) shaft, spiral (mixing) shaft's one end links to each other with the output of motor speed reducer, and its other end passes through slip cap swing joint in the bottom of the agitator tank body, spiral (mixing) shaft runs through and fixedly connected with flight, dosing nozzle structure includes dosing hand ball valve, dosing disk seat, dosing pipe, dosing shower nozzle, dosing disk seat and the bellied pipeline fixed connection in agitator tank body top, dosing pipe runs through dosing disk seat and its fixed connection, dosing hand ball valve, dosing pipe, Add agent shower nozzle top-down fixed connection in proper order and switch on, the cooling nozzle of a certain amount is installed to the circular cone section of agitator tank body lower part, cooling nozzle is the three-layer distribution along circular cone section top-down, and the cooling nozzle on every layer is along circumferencial direction equipartition, the cooling nozzle structure includes cooling nozzle seat, nozzle body, sealing washer, pneumatic joint, cooling nozzle seat and agitator tank body fixed connection, the nozzle body runs through cooling nozzle seat and its tip and stretches into the agitator tank internal portion, the sealing washer is installed with the combination department of cooling nozzle seat to the nozzle body, pneumatic joint fixed connection is in the other end of nozzle body, the nozzle body is equipped with the cooling nozzle hole who link up.

2. A magnetic powder mixing and stirring machine as claimed in claim 1, wherein the centerline of the outlet of the cooling nozzle aperture is at an angular angle to the centerline of the nozzle body.

3. A magnetic powder mixing and stirring machine as claimed in claim 1, wherein the nozzle body and the cooling nozzle holder are connected in a locating fit by a locating pin.

4. A magnetic powder mixing and stirring machine as claimed in claim 1, wherein the distribution of the spiral pieces is non-equidistant spiral distribution, and the overall shape of the spiral pieces is a conical structure.

5. The magnetic powder mixing and stirring machine according to claim 1, wherein the additive valve core is formed at the lower part of the additive pipe, the additive valve core is a circular through hole, the diameter of the through hole is larger than that of the inner hole of the additive pipe, and the upper part of the additive sprayer is positioned in the additive valve core.