CN207025623U - A kind of high speed centrifugal atomization device - Google Patents

Abstract

A high-speed centrifugal atomizer, including a high-speed motor, a feed liquid distributor, a wear-resistant atomizing wheel and an atomizer cooling bracket, the high-speed motor includes a high-speed motor body, a high-speed motor front bearing seat and a high-speed motor rear bearing seat, and a high-speed motor The end of the shaft extension is successively set with a material liquid distributor and a wear-resistant atomizing wheel, and the high-speed motor is installed on the cooling bracket of the atomizer; The chemical wheel protection water channel, the slurry channel, and the high-pressure shaft seal air channel lead to the material-liquid distributor and are connected to the wear-resistant atomizing wheel through the material-liquid distributor. Compared with the existing technology, the beneficial effect of the utility model is: a high-speed centrifugal atomizer, which is simple and convenient in processing, assembly, disassembly and maintenance, compact in structure, stable and reliable, long in service life, low in energy consumption, and occupies Small space.

Description

A high-speed centrifugal atomizer

technical field

The utility model relates to the field of atomization drying equipment, in particular to a high-speed centrifugal atomizer.

Background technique

The high-speed centrifugal atomizer drives the atomizing wheel to rotate at high speed through the prime mover, and the atomizing wheel generates a strong centrifugal force to do work on the slurry and spray it out through the nozzle of the atomizing wheel to achieve the purpose of slurry atomization. The surface area of the atomized slurry increases, which is conducive to mixing with other media for reaction in the subsequent process, and can also be used for drying and making powder of the slurry.

At present, the structure of the commonly used high-speed centrifugal atomizer is mostly an ordinary motor drives the wear-resistant atomizing wheel to rotate at high speed through the speed-increasing gear, which has high noise and serious wear; there are also some belt drives, and the transmission efficiency is not high, resulting in a certain degree of energy consumption. Waste, and the belt is easy to age and inconvenient to maintain. At the same time, the high-speed centrifugal atomizer with gear box speed-up needs to be equipped with a gear box and its lubrication system, control and monitoring system. The whole system is complicated and the overall manufacturing cost is high.

There are also some high-speed centrifugal atomizers directly driven by high-speed permanent magnet synchronous motors or high-speed asynchronous motors, but there are still the following problems:

1) Structurally, the high-speed motor is independent, and additional feed pipes and water inlet pipes are required. The installation process is cumbersome and complicated. The overall thickness of the feed-liquid distributor is large and the number of layers is large, which is not easy to install, disassemble and maintain.

2) The feed pipe and water inlet pipe are directly connected to the feed liquid distributor, which takes up a lot of space, and the whole equipment is high, which increases the weight and volume of the atomizer.

3) The high-speed motor lacks an air seal device, and most of them are mechanical seals installed separately, which has a poor sealing effect and also increases the length of the motor shaft, which affects the reliability of the equipment.

4) The overall structure lacks cooling and cannot work at very high ambient temperatures.

Utility model content

The purpose of the utility model is to overcome the deficiencies in the prior art and provide a high-speed centrifugal atomizer, which is simple and convenient in processing, assembly, disassembly and maintenance, compact in structure, stable and reliable, long in service life, low in energy consumption, and occupies Small space.

In order to achieve the above object, the utility model adopts the following technical solutions:

A high-speed centrifugal atomizer, including a high-speed motor, a feed liquid distributor, a wear-resistant atomizing wheel and an atomizer cooling bracket, the high-speed motor includes a high-speed motor body, a high-speed motor front bearing seat and a high-speed motor rear bearing seat, and a high-speed motor The end of the shaft extension is successively set with a material liquid distributor and a wear-resistant atomizing wheel, and the high-speed motor is installed on the cooling bracket of the atomizer; The chemical wheel protection water channel, the slurry channel, and the high-pressure shaft seal air channel lead to the material-liquid distributor and are connected to the wear-resistant atomizing wheel through the material-liquid distributor.

A pair of angular contact ball bearings or a cylindrical roller bearing are installed in the front bearing seat of the high-speed motor, and a pair of angular contact ball bearings or a cylindrical roller bearing are installed in the rear bearing seat of the high-speed motor to support the rotor of the high-speed motor; The lubrication method is oil-air lubrication, oil mist lubrication or grease lubrication.

The feed-liquid distributor includes a feed-liquid distributor bracket, a feed-liquid distribution plate, and a cooling water plate for the feed-liquid distribution plate. The feed-liquid distributor bracket and the front bearing seat of the high-speed motor are connected and positioned by countersunk screws, and the feed-liquid distribution plate is located below Embedded in the bracket of the material liquid distributor, it is connected to the bracket of the material liquid distributor through the countersunk head screw, and sealed by the O-ring; the cooling water plate of the material liquid distribution plate is set at the bottom of the material liquid distribution plate, through the countersunk The screw is connected with the feed liquid distributor bracket for positioning.

The feed liquid distribution plate is provided with a feed liquid distributor slurry spiral channel, the upper end communicates with the slurry channel in the feed liquid distributor bracket, the lower end is provided with a slurry jet channel, and the feed liquid distribution plate cooling water plate is provided with a feed liquid distribution channel. The atomization wheel protection water channel of the device, the upper end is connected with the atomization wheel protection water channel in the material liquid distribution plate, and the atomization wheel protection water nozzle is arranged at the lower end.

A groove is set in the middle of the bracket of the material-liquid distributor, and it is installed in cooperation with the protrusion at the lower end of the front bearing seat of the high-speed motor, and a high-pressure air cavity is formed between the two, and the high-pressure air cavity is connected with the high-pressure air cavity in the front bearing seat of the high-speed motor. The pressure shaft sealing gas channel is connected, and the high-pressure gas in the high-pressure air chamber passes through the gap between the material-liquid distributor bracket and the high-speed motor shaft, and forms a high-speed motor shaft seal protection gas near the exposed high-speed motor shaft of the atomizing wheel.

The pressure of the high-pressure gas in the high-pressure air cavity is greater than the pressure of the oil-gas mixture at the bearing, forming an oil seal.

The wear-resistant atomizing wheel is interference-connected with the taper shaft of the high-speed motor through the taper shaft hole of the atomization wheel base, and the tail end is positioned and fixed by a lock nut.

Both ends of the feed hole edge of the wear-resistant atomizing wheel are chamfered at 45°, which is beneficial to the atomizing wheel to protect the spraying of water and the centrifugal jet flow of the slurry.

The atomizer cooling bracket includes a cooling bracket flange, a cooling air distribution groove and a cooling bracket shell, the cooling bracket flange is provided with a cooling air inlet, and the cooling air enters the cooling air distribution groove through the cooling bracket flange, and then enters the cooling bracket The gap between the casing and the high-speed motor cools the high-speed motor.

A method for atomizing liquid with a high-speed centrifugal atomizer. The slurry and the protection water of the atomization wheel are passed into the material liquid distributor from the high-speed motor, and sprayed into the wear-resistant atomization wheel through the centrifugal jet of the material liquid distributor. The high-speed motor The rotation of the rotating shaft produces a peripheral peripheral speed of 50 m/s to 400 m/s of the wear-resistant atomizing wheel, and the slurry is output into a mist; at the same time, high-pressure air is introduced to form a shaft seal near the exposed high-speed motor shaft of the atomizing wheel protective gas.

Compared with the prior art, the beneficial effects of the utility model are:

1) The utility model adopts a structure in which the high-speed motor housing integrates the cooling water chamber, the slurry channel, the atomization wheel protection water channel, and the shaft seal air channel. The high-speed motor housing is equipped with a cooling bracket shell, which greatly improves High temperature performance of high-speed motors.

2) The utility model designs the gas seal structure of the high-speed motor. After the high-pressure gas passes through the shaft seal air channel of the front bearing seat of the high-speed motor, a high-pressure gas cavity is formed to prevent corrosive gas from corroding the rest except the atomization wheel and the material-liquid distributor. At the same time, it also prevents the oil-air mixture in the bearing seat from entering the working environment through the atomizing wheel, polluting the quality of the atomized slurry, and affecting the subsequent process.

3) The utility model is a high-power high-speed motor directly driving the atomizing wheel, which saves the complicated and expensive speed-up box system and lubrication system, reduces noise and mechanical loss, reduces the volume of the whole system, and improves the overall machine efficiency. High efficiency and simple structure solve the problems of many failure points and high operating costs of the gearbox and lubrication system.

4) The overall structure of the utility model is simple, small in size and light in weight. Especially, the high-speed motor high-speed shaft is at the first-order critical speed, and the operation is more reliable.

Description of drawings

Fig. 1 is the structural representation of a kind of high-speed centrifugal atomizer of the present utility model (serous fluid channel, atomization wheel protection water channel side schematic diagram);

Fig. 2 is a structural schematic diagram of a high-speed centrifugal atomizer of the present invention (a schematic diagram of the oil-gas lubrication channel side);

Fig. 3 is a schematic structural view of the feed liquid distributor in the utility model (a schematic view of the side of the oil-gas lubrication channel);

Fig. 4 is a schematic structural view of a high-speed centrifugal atomizer (a schematic view of the shaft seal gas passage side);

Fig. 5 is a schematic structural view of the feed liquid distributor in the utility model (a schematic view of the side of the shaft seal gas channel).

In the figure: 1-high-speed motor, 2-cooling bracket of atomizer, 3-material liquid distributor, 4-wear-resistant atomizing wheel, 5-rear bearing seat of high-speed motor, 6-high-speed motor shaft, 7-high-speed motor Housing, 8-high-speed motor front bearing seat, 9-bearing, 10-front bearing outer ring distance ring, 11-material-liquid distributor bracket, 12-material-liquid distribution plate, 13-material-liquid distribution plate cooling water plate, 14 -Cooling bracket flange, 15-Cooling air distribution groove, 16-Cooling bracket shell, 17-Atomization wheel protection water channel, 18-Slurry channel, 19-Oil-air lubrication channel, 20-Shaft seal air channel, 21-Material liquid Distributor slurry spiral channel, 22-material liquid distributor atomization wheel protection water channel, 23-high-speed motor cooling water cavity, 24-bearing seat cooling water cavity, 25-high pressure air cavity, 26-atomization wheel protection water nozzle, 27 - Serous jet channel.

detailed description

Below in conjunction with accompanying drawing the embodiment of the present utility model is further described:

As shown in Figures 1-5, a high-speed centrifugal atomizer includes a high-speed motor 1, a material-liquid distributor 3, a wear-resistant atomizing wheel 4 and an atomizer cooling bracket 2, and the high-speed motor 1 includes a high-speed motor body and a high-speed motor The front bearing seat 8 and the rear bearing seat 5 of the high-speed motor, the shaft extension end of the high-speed motor are successively fitted with the feed liquid distributor 3 and the wear-resistant atomizing wheel 4, and the high-speed motor 1 is installed on the cooling bracket 2 of the atomizer; The main body, the front bearing seat 8 of the high-speed motor and the rear bearing seat 5 of the high-speed motor are provided with an atomization wheel protection water channel 17, a slurry channel 18, and a high-pressure shaft seal air channel 20, respectively leading to the feed liquid distributor 3 and passing through the feed liquid The distributor 3 communicates with the wear-resistant atomizing wheel 4 .

See Fig. 1, Fig. 2, Fig. 4, in addition to the stator and rotor cavities with sufficient volume are arranged in the high-speed motor housing 7, there is also a high-speed motor cooling water chamber 23 outside the stator and rotor cavities. A slurry channel 18, an atomizing wheel protection water channel 17, a shaft seal air channel 20 and an oil-air lubrication channel 19 are arranged in the cooling water cavity 23 of the high-speed motor, which are respectively connected with the rear bearing housing 5 of the high-speed motor and the front bearing housing 8 of the high-speed motor. The passages are connected, and there is a sealing ring groove at the joint, and an O-ring is arranged inside for sealing. As an option, other sealing elements can also be used to achieve the sealing effect. The specific protection scope of the utility model is not limited thereto.

The rear bearing seat 5 of the high-speed motor is connected with the external pipeline by threads. The high-speed motor rear bearing block 5 and the high-speed motor housing 7 are fixed by several countersunk screws, and a sufficiently large bearing block cooling water cavity 24 is also arranged in the high-speed motor rear bearing block 5 and the high-speed motor front bearing block 8 .

A flange is provided on the outside of the high-speed motor housing 7 for connection and fixation with the atomizer cooling bracket 2 .

A pair of angular contact ball bearings or a cylindrical roller bearing are housed in the front bearing housing 8 of the high-speed motor, and a pair of angular contact ball bearings or a cylindrical roller bearing are housed in the rear bearing housing 5 of the high-speed motor for supporting the rotor of the high-speed motor; The lubrication method of the bearing is oil-air lubrication, oil mist lubrication or grease lubrication.

See Fig. 2, Fig. 3, establish oil-gas lubrication channel 19 in the high-speed motor front bearing block 8, lead to bearing. Lubricating oil flows into the front bearing seat 8 of the high-speed motor through the oil-air lubrication channel 19 in the high-speed motor rear bearing seat 5 and the high-speed motor housing 7, and after entering the oil-air lubrication channel 19 of the front bearing outer ring distance ring 10, the bearing is lubricated and cooled. A lubricating oil discharge port is provided in the front bearing seat of the high-speed motor.

See Fig. 1, Fig. 3, Fig. 5, the feed-liquid distributor 3 includes a feed-liquid distributor bracket 11, a feed-liquid distribution plate 12, a feed-liquid distribution plate cooling water plate 13, a feed-liquid distributor bracket 11 and a high-speed motor front The bearing seat 8 is connected and positioned by countersunk screws, and the material-liquid distribution plate 12 is embedded in the material-liquid distributor bracket 11 at the bottom, connected and positioned with the material-liquid distributor bracket 11 by countersunk screws, and sealed by an O-ring; The cooling water tray 13 of the material-liquid distribution plate is arranged at the bottom of the material-liquid distribution plate 12, and is connected and positioned with the material-liquid distributor bracket 11 by countersunk screws.

A slurry channel and an atomizing wheel protection water channel are provided in the feed liquid distributor bracket 11 to communicate with the slurry channel and the atomization wheel protection water channel in the front bearing seat 8 of the high-speed motor respectively. The lower part of the atomization wheel protection water channel in the material-liquid distributor support 11 communicates with the atomization wheel protection water channel in the material-liquid distribution plate 12 .

The feed liquid distribution plate 12 is provided with a feed liquid distributor slurry spiral channel 21, the upper end communicates with the slurry channel in the feed liquid distributor bracket 11, the lower end is provided with a slurry jet channel 27, and the feed liquid distribution plate cooling water plate 13 There is an atomization wheel protection water channel 22 for the material liquid distributor, the upper end communicates with the atomization wheel protection water channel in the material liquid distribution plate 12, and the atomization wheel protection water nozzle 26 is provided at the lower end.

A groove is set in the middle of the material-liquid distributor bracket 11, which is fitted with the protrusion at the lower end of the high-speed motor front bearing seat 8, and a high-pressure air chamber 25 is formed between the two, and the high-pressure air chamber 25 is connected with the high-speed motor front bearing The high-pressure shaft seal air channel 20 in the seat 8 is connected, and the high-pressure gas in the high-pressure air chamber 25 passes through the gap between the material-liquid distributor bracket 11 and the high-speed motor shaft 6, and forms a shaft seal near the high-speed motor shaft 6 where the atomization wheel is exposed. protective gas.

The front bearing seat 8 of the high-speed motor is matched with the support 11 of the material-liquid distributor in clearance, and a circumferential gas channel is formed in the middle, and the high-pressure gas in the high-pressure gas chamber 25 forms a high-pressure gas seal here.

See Fig. 5, the high-pressure shaft seal gas channel 20 in the front bearing block 8 of the high-speed motor also leads to the bearing, and the high-pressure gas pressure in the high-pressure air chamber 25 is greater than the oil-gas mixture pressure at the bearing to form an oil seal.

The wear-resistant atomizing wheel 4 is interference-connected with the taper shaft of the high-speed motor through the taper shaft hole of the atomization wheel base, and the tail end is positioned and fixed by a lock nut.

Both ends of the feed hole edge of the wear-resistant atomizing wheel 4 are chamfered at 45°, which is beneficial to the spraying of the atomizing wheel to protect the water and the centrifugal jet flow of the slurry.

The atomizer cooling bracket 2 includes a cooling bracket flange 14, a cooling air distribution groove 15 and a cooling bracket housing 16. The cooling bracket flange 14 is provided with a cooling air inlet, and the cooling wind enters the cooling air distribution through the cooling bracket flange 14. The slot 15 enters the gap between the cooling bracket shell 16 and the high-speed motor 1 to cool the high-speed motor 1, and the cooling gas finally passes into the atomizing wheel.

As an option, the utility model atomization wheel protection water passage 17, slurry passage 18, oil-gas lubrication passage 19, shaft seal air passage 20, can be a straight-through or a passage with a slope or a passage after a right-angle turn, as long as each The channels flow through the high-speed motor casing and the various arrangements of the front and rear bearing seats of the high-speed motor can achieve the functions of protecting the high-speed motor, cooling, and simplifying the structure. The specific protection scope of the utility model is not limited thereto.

As shown in FIG. 2 , the flange 14 of the cooling bracket has two inner and outer rings of bolt holes, wherein the inner ring is connected to the high-speed motor housing 7 and is a threaded hole, and the outer ring is connected to the process tower and is a through hole.

The cooling air distribution groove 15 is an inner hollow ring, and is arranged with axial through holes and radial through holes for evenly distributing the cooling air.

The cooling bracket housing 16 is in an inverted cone shape, and forms a cooling protection air cavity with the high-speed motor housing 7 to isolate the external high-temperature gas from directly contacting the high-speed motor housing 7 .

The cooling air distribution groove 15 and the cooling bracket shell 16 are welded on the cooling bracket flange 14 .

A method for atomizing liquid with a high-speed centrifugal atomizer. The slurry and the protection water of the atomization wheel are passed from the high-speed motor 1 into the feed-liquid distributor 3, and the centrifugal jet of the feed-liquid distributor 3 is sprayed into the wear-resistant atomizer 4. In the middle, the rotating shaft of the high-speed motor 1 generates a peripheral peripheral speed of the wear-resistant atomizing wheel 4 of 50 m/s to 400 m/s, and outputs the slurry into a mist; A shaft seal shielding gas is formed near the motor shaft 6 .

When the utility model is working, the atomized slurry passes through the slurry channel 18 to the slurry spiral channel 21 of the feed liquid distributor, and then sprays into the wear-resistant atomizing wheel 4 through the slurry jet flow channel 27, and finally the centrifugal action of the wear-resistant atomizing wheel 4 The mist slurry is sprayed out from several nozzles.

The atomization wheel protection water passes through the atomization wheel protection water channel 17 to the atomization wheel protection water channel 22 of the material liquid distributor, and then through the atomization wheel protection water nozzle 26, sprays into the wear-resistant atomization wheel 4 to reduce wear-resistant atomization The temperature of the wheel 4 is finally mixed with the slurry, and the mist slurry is sprayed out from several nozzles under the centrifugal action of the wear-resistant atomizing wheel 4.

Claims (9)

1. A high-speed centrifugal atomizer, including a high-speed motor, a feed liquid distributor, a wear-resistant atomizing wheel and an atomizer cooling support, the high-speed motor includes a high-speed motor body, a front bearing seat of the motor and a rear bearing seat of the motor, and a high-speed motor The end of the shaft extension is successively set with a feed liquid distributor and a wear-resistant atomizing wheel, and the high-speed motor is installed on the atomizer cooling bracket; it is characterized in that the high-speed motor body, the front bearing seat of the motor and the rear bearing seat of the motor are installed throughout There are atomizing wheel protection water channels, slurry channels, and high-pressure shaft seal air channels, which respectively lead to the material-liquid distributor and are connected to the wear-resistant atomizing wheel through the material-liquid distributor. 2. A high-speed centrifugal atomizer according to claim 1, wherein a pair of angular contact ball bearings or a cylindrical roller bearing is installed in the front bearing seat of the high-speed motor, and a pair of Angular contact ball bearings or a cylindrical roller bearing are used to support the rotor of high-speed motors; the bearings are lubricated by oil-air lubrication, oil mist lubrication or grease lubrication. 3. A high-speed centrifugal atomizer according to claim 1, wherein the feed-liquid distributor comprises a feed-liquid distributor bracket, a feed-liquid distribution plate, a feed-liquid distribution plate cooling water plate, and a feed-liquid distribution plate The bracket and the front bearing seat of the high-speed motor are connected and positioned by countersunk screws, and the material-liquid distribution plate is embedded in the bracket of the material-liquid distributor at the bottom. Sealing; the cooling water plate of the material-liquid distribution plate is set at the bottom of the material-liquid distribution plate, and is connected and positioned with the support of the material-liquid distributor through countersunk screws. 4. A high-speed centrifugal atomizer according to claim 3, characterized in that, the feed liquid distribution plate is provided with a feed liquid distributor slurry spiral channel, and the upper end communicates with the slurry channel in the feed liquid distributor bracket, The lower end is provided with a slurry jet channel, and the cooling water plate of the material liquid distribution plate is provided with a material liquid distributor atomization wheel protection water channel, the upper end is connected with the atomization wheel protection water channel in the material liquid distribution plate, and the lower end is provided with an atomization wheel. Wheel protection water nozzles. 5. A high-speed centrifugal atomizer according to claim 3, characterized in that, a groove is set in the middle of the support of the material-liquid distributor, which is fitted with the protrusion at the lower end of the front bearing seat of the high-speed motor, and is placed between two A high-pressure air chamber is formed between them, and the high-pressure air chamber communicates with the high-pressure shaft seal gas channel in the front bearing seat of the high-speed motor. A high-speed motor shaft seal shielding gas is formed near the exposed shaft of the wheel. 6. A high-speed centrifugal atomizer according to claim 5, characterized in that the pressure of the high-pressure gas in the high-pressure air cavity is greater than the pressure of the oil-gas mixture at the bearing, forming an oil seal. 7. A high-speed centrifugal atomizer according to claim 1, characterized in that the wear-resistant atomizing wheel is in interference connection with the cone shaft of the high-speed motor through the taper shaft hole of the atomization wheel base, and the tail end Positioned and fixed by lock nuts. 8. A high-speed centrifugal atomizer according to claim 7, characterized in that, both ends of the edge of the feed hole of the wear-resistant atomizing wheel are chamfered at 45°. 9. A kind of high-speed centrifugal atomizer according to claim 1, it is characterized in that, described atomizer cooling bracket comprises cooling bracket flange, cooling air distribution ring and cooling housing, cooling bracket flange is provided with cooling The air inlet, the cooling air enters the cooling air distribution ring through the cooling bracket flange, and then enters the gap between the cooling shell and the high-speed motor.