CN201140135Y - Atomizing discs for high-speed centrifugal atomizers - Google Patents

Abstract

An atomization disc of a high-speed centrifugal atomizer. The nozzle disc is located between the lower disc surface of the disc-shaped upper cover and the upper disc surface of the disc-shaped base. The three are fixed by screws. The disc-shaped upper cover, the disc-shaped base and the nozzle A storage space for the atomized liquid is formed between the inner walls of the discs. Cylindrical holes are evenly distributed on the circumference of the nozzle disc in the radial direction, and nozzles and plugs are respectively installed in each cylindrical hole from the inside to the outside. The utility model has the characteristics of simple structure, easy processing, and convenient installation and disassembly of the atomizing nozzle. conditions, reducing the installation and lubrication requirements for bearings. The rotational speed of the atomizing disc can be lower than 10000r/min, thereby reducing the vibration of the atomizing disc and the motor shaft and prolonging the service life of the motor. At the same time, there is no need for a speed increasing system, which greatly reduces the cost of using the atomizer.

Description

Atomizing discs for high-speed centrifugal atomizers

technical field

The utility model belongs to the field of solid waste incineration treatment, in particular to an atomization disc of a high-speed centrifugal atomizer which is a key component of a flue gas purification system for solid waste incineration treatment.

Background technique

The high-speed centrifugal atomizer uses a high-speed motor to drive the atomizing disc to rotate at high speed. The high-speed rotating atomizing disc generates a strong centrifugal force, so that the material in the form of suspension or emulsion is sprayed out through the nozzle with a special structure of the atomizing disc. Thus being atomized into droplets with a micron scale. The increase in the surface area of the atomized particles is more conducive to mass transfer and heat transfer or mixing with other media to react.

The existing atomizing disc is cylindrical, with a liquid storage chamber in the middle, and nozzle installation holes are opened around the liquid storage chamber. The head end of the nozzle installation hole communicates with the liquid storage chamber, and the tail end passes through the atomization disc. the outer edge. In order to prevent the nozzle from being thrown out of the nozzle mounting hole when the atomizing disc rotates at high speed, a limit step is provided near the end of the nozzle mounting hole, so that when processing the nozzle mounting hole on the atomizing disc, it must be removed from the liquid storage chamber. Carrying out toward the outer edge of the atomizing disc is not only cumbersome and laborious, but the processing efficiency is not high, and the installation of the nozzle is also extremely inconvenient. At the same time, the diameter of the cylindrical atomizing disc is small and the number of nozzles is small. To meet the requirements of the diameter of the atomized particles, a very high speed must be used (up to 10,000r/min or even 40,000r/min). The traditional method is to use the gears of the gear box to drive the atomizer. The manufacturing cost is expensive, the noise and vibration are large, and the wear is serious. There are also belt drives, which are prone to slipping at high temperatures, resulting in lower and unstable atomizer speeds and poor atomization effects. In addition, after a certain period of use, the belt is prone to aging. Since the rotation speed of the atomizing disc reaches 10000r/min, the manufacturing and installation accuracy of the driving shaft bearing of the atomizing disc is very high. The high-speed rotation of the bearing for a long time will generate high heat, resulting in the loss of lubricating grease of the bearing, and the bearing is prone to failure due to operation. oil damage.

Utility model content

The technical problem to be solved by the utility model is to provide an atomizing disc of a high-speed centrifugal atomizer which is simple in processing and assembly and can reduce the requirement on the rotational speed.

The technical scheme of the utility model is as follows: an atomizing disc of a high-speed centrifugal atomizer, a nozzle disc with a ring structure is located between the lower disc surface of the disc-shaped upper cover and the upper disc surface of the disc-shaped base, and the three are connected by screws Fixed, a boss is provided in the center of the disc surface on the disc-shaped base, and the boss passes through the feeding hole in the center of the disc-shaped upper cover, and the center of the boss is provided with a mounting hole for the rotating shaft to pass through; the disc An annular atomizing liquid storage space is formed between the upper cover, the disc-shaped base and the inner wall of the nozzle plate. Cylindrical holes are evenly distributed on the circumference of the nozzle plate in the radial direction, and nozzles and plugs are respectively installed in each cylindrical hole from the inside to the outside. , the inner hole of the plug is docked with the central hole of the nozzle, and the plug axially restricts the nozzle.

The utility model is fitted on the rotating shaft through the installation hole on the central boss of the disc-shaped base, and is fixed by the locking device. Since the hole on the nozzle plate for installing the nozzle and the plug is a simple cylindrical shape, it can be processed from the outside to the inside, thereby reducing the processing difficulty, improving the processing efficiency, and ensuring the processing accuracy; similarly, the nozzle can also be installed from the outside to the inside, The nozzles are easy to install and remove. The utility model can be made into nearly 30 nozzles, the diameter of the nozzles is less than 10mm, and the diameter of the atomizing disc reaches 400mm, and the overall diameter of the atomizing disc is flat, thus increasing the atomizing distance. The large diameter of the atomizing disc is conducive to increasing the number of nozzles and ensuring the uniformity of the atomized liquid in the circumferential direction after atomization; the large diameter of the atomizing disc reduces the requirements for the rotation speed of the atomizing disc and improves the drive shaft bearing of the atomizing disc The working conditions of the bearing reduce the installation and lubrication requirements of the bearing. The rotation speed of the atomizing disc can be lower than 10000r/min, which reduces the vibration of the atomizing disc and the motor shaft and prolongs the service life of the motor. At the same time, there is no need for a speed increasing system, which greatly reduces the cost of using the atomizer.

The upper disk surface of the above-mentioned disk-shaped base and the outer wall of the central boss pass through an arc-shaped turning surface; the feeding hole in the center of the disk-shaped upper cover is composed of an upper straight section and a lower cone section, wherein the minimum diameter of the lower cone section is The end is on the top, and the diameter of the smallest end of the lower cone section is larger than the diameter of the upper straight section. The inner wall of the nozzle plate, the upper plate surface of the disc-shaped base, the arc-shaped surface of revolution, the outer wall of the boss, the inclined surface of the lower cone section of the feed hole, and the transition surface between the lower cone section and the upper straight section of the feed hole jointly form an atomization The liquid storage space, the curved surface of revolution and the slope of the cone section under the feed hole play a role in ensuring the smooth flow of the atomized liquid.

A circular limit step is arranged on the lower surface of the disc-shaped upper cover and the upper surface of the disc-shaped base near the edge. The diameter of the limit step is adapted to the inner diameter of the nozzle plate. A groove is formed on the top, and a sealing ring is embedded in the groove. The limit steps on the disc-shaped upper cover and the disc-shaped base act as stoppers to ensure the concentricity of the disc-shaped upper cover, the disc-shaped base and the nozzle plate when they are assembled into one, reduce the unbalanced movement, and improve the atomization disc. Rotational accuracy. Moreover, sealing rings are installed at the joint surfaces of the disc-shaped upper cover and the nozzle disc, and the nozzle disc and the disc-shaped base, which can prevent the leakage of the atomized liquid.

The installation hole in the center of the boss on the above-mentioned disc-shaped base for the rotation shaft to pass through is a tapered hole with a large upper part and a smaller lower part. The conical fitting connection ensures the concentricity between the atomizing disc and the rotating shaft, and improves the rotation accuracy of the atomizing disc. Under the action of the locking device, the disc-shaped base can form a tight fit with the rotating shaft, ensuring reliable connection between the atomizing disc and the rotating shaft.

In order to improve the atomization effect of the atomizing liquid and increase the atomization distance, the center hole of the above-mentioned nozzle is divided into two sections, the section close to the center of the nozzle disc is a conical shrinkage hole with a large inside and a small outside, and the other section is a cylindrical hole.

The above-mentioned plug is cylindrical, and the plug is threaded with the nozzle plate, which is used to limit the relative position of the nozzle in the cylindrical hole, prevent the nozzle from loosening and detaching from the nozzle plate when the atomizing plate rotates at high speed, and facilitate the installation and installation of the nozzle. Disassembly; the inner hole of the plug is a regular hexagon, which is convenient for tightening and disassembly of the plug.

The beneficial effects of the utility model are:

1. Since the hole on the nozzle plate for installing the nozzle and the plug is a simple cylindrical shape, it can be processed from the outside to the inside, thereby reducing the difficulty of processing, improving the processing efficiency and ensuring the processing accuracy; similarly, the nozzle can also be processed from the outside to the inside Installation, nozzle installation and removal are very convenient.

2. There is an arc-shaped turning surface on the disc-shaped base, and an inclined surface on the disc-shaped upper cover. The combination of the two can ensure the smooth flow of the atomized liquid.

3. Both the disc-shaped upper cover and the disc-shaped base are designed with spigots to ensure the concentricity of the disc-shaped upper cover, disc-shaped base and nozzle plate when they are assembled together, reduce the unbalanced movement, and improve the rotation accuracy of the atomizing disc . Moreover, sealing rings are installed at the joint surfaces of the disc-shaped upper cover and the nozzle disc, and the nozzle disc and the disc-shaped base, which can prevent the leakage of the atomized liquid.

4. The installation hole in the center of the boss on the disc-shaped base for the rotation shaft to pass through is a tapered hole with a large top and a small bottom, which ensures the concentricity of the atomizing disc and the rotating shaft and improves the rotation accuracy of the atomizing disc. Under the action of the locking device, the connection between the disc-shaped base and the rotating shaft is reliable.

5. The center hole of the nozzle adopts a two-stage structure, and the section close to the center of the nozzle plate is a contraction hole, which effectively improves the atomization effect of the atomizing liquid and increases the atomization distance.

6. The plug is cylindrical, and the outer wall is processed with external threads, which are screwed with the internal threads of the nozzle plate to limit the relative position of the nozzle in the cylindrical hole and prevent the nozzle from loosening and detaching from the nozzle plate when the atomizing plate rotates at high speed. Easy to install and remove the nozzle. The inner hole of the plug is a regular hexagon, which is convenient for tightening and dismounting of the plug.

7. The overall atomization disc is flat with a diameter much larger than its height, which increases the atomization distance. The diameter of the atomizing disc is large, which is beneficial to increase the number of nozzles and ensure the uniformity of the atomizing liquid in the circumferential direction after atomization.

8. The diameter of the atomizing disc is large, which reduces the requirements for the rotating speed of the atomizing disc, improves the working conditions of the drive shaft bearing of the atomizing disc, and reduces the requirements for the installation and lubrication of the bearings. The bearing does not need to design a special lubrication system, and the ordinary grease lubrication can meet the lubrication and cooling requirements of the bearing.

9. The rotation speed of the atomizing disc can be lower than 10000r/min, thereby reducing the vibration of the atomizing disc and the motor spindle, and prolonging the service life of the motor.

10. The rotation speed of the atomizing disc can be lower than 10000r/min, and no speed-up system is needed, which greatly reduces the cost of using the atomizer.

11. The disk-shaped upper cover, disk-shaped base, nozzle plate and other parts are all made of new materials with low density and corrosion resistance, which reduces the moment of inertia of the rotating system and improves the service life.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Fig. 2 is a structural schematic diagram of the disc-shaped upper cover in the utility model.

Fig. 3 is a bottom view of Fig. 2 .

Fig. 4 is a structural schematic diagram of a disc-shaped base in the utility model.

FIG. 5 is a top view of FIG. 4 .

Fig. 6 is a schematic diagram of the structure of the nozzle plate in the present invention.

FIG. 7 is a top view of FIG. 6 .

Detailed ways

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

As shown in Fig. 1, Fig. 2 and Fig. 3, the utility model is made of components such as nozzle disc 1, disc-shaped loam cake 2, disc-shaped base 3, nozzle 4, plug 5, sealing ring 6 and screw 7. Wherein the center of disc-shaped loam cake 2 is provided with feed hole 2a, and this feed hole 2a is made up of upper straight section and lower conical section, and wherein the minimum end of lower conical section is on, and the diameter of lower conical section minimum end is larger than described The diameter of the upper straight segment. A plurality of through holes 2d are evenly distributed on the circumference of the disc-shaped upper cover 2 near its edge, and the lower surface of the disc-shaped upper cover 2 located inside the through hole 2d is provided with a circular limit step 2e, which is connected to the through-hole 2d. An annular groove 2f is formed on the lower plate between the holes 2d, and a sealing ring 6 is embedded in the groove 2f.

As can be seen from Fig. 1, Fig. 4 and Fig. 5, a boss 3c is integrally formed on the lower surface of the disc-shaped base 3, and an external thread is processed on the outer wall of the boss 3c; The boss 3a, the upper surface of the disc-shaped base 3 and the outer side wall of the boss 3a are transitioned through an arc-shaped turning surface 3b, and the center of the boss 3a is provided with a mounting hole for the rotation shaft to pass through. A tapered hole with a large bottom and a small one penetrates from the top surface of the boss 3a to the bottom surface of the boss 3c. A plurality of threaded through-holes 3d are evenly distributed on the circumference of the disc-shaped base 3 near its edge, and the threaded through-holes 3d on the disc-shaped base 3 are equivalent in size and number to the through-holes 2d on the disc-shaped upper cover 2. relative position. A circular limiting step 3e is also provided on the upper surface of the disc-shaped base 3 inside the threaded through hole 3d, which is equal in size to the circular limiting step 2e on the lower surface of the disc-shaped upper cover 2. An annular groove 3f is formed on the upper disk surface between the limiting step 3e of the disk base 3 and the threaded through hole 3d, and a sealing ring 6 is embedded in the groove 3f.

It can also be seen from Fig. 1, Fig. 4, Fig. 5, Fig. 6 and Fig. 7 that the nozzle plate 1 is a ring structure whose diameter is much larger than its thickness, and is located between the lower plate surface of the disc-shaped upper cover 2 and the upper plate surface of the disc-shaped base 3. Between, the inner diameter of the nozzle plate 1 is adapted to the diameters of the upper limit steps 2e and 3e of the disc-shaped upper cover 2 and the disc-shaped base 3, and the inner wall of the nozzle plate 1 fits with the limit steps 2e and 3e. The outer edge exceeds the outer edges of the disc-shaped upper cover 2 and the disc-shaped base 3 . A plurality of screws 7 pass through the through hole 2d of the disc-shaped upper cover 2, the corresponding through hole 1d on the nozzle plate 1, and the threaded through hole 3d on the disc-shaped base 3 from top to bottom to fix the three together. The boss 3a of the shaped base 3 passes through the feeding hole 2a at the center of the disc-shaped upper cover 2 . The inner wall of the nozzle plate 1, the upper plate surface of the disc-shaped base 3, the arc-shaped surface of revolution 3b, the outer wall of the boss 3a, the slope of the lower cone section of the feed hole 2a, and the lower cone section and the upper straight section of the feed hole 2a The transition surfaces together form the storage space for the atomized liquid, in which the arc-shaped surface of revolution 3b and the slope of the lower cone section of the feeding hole 2a play a role in ensuring the smooth flow of the atomized liquid.

It can be further seen from Fig. 1, Fig. 6 and Fig. 7 that there are a plurality of cylindrical holes 1a evenly distributed on the circumference in the radial direction of the nozzle plate 1, the cylindrical holes 1a penetrate from the inner wall of the nozzle plate 1 to the outer wall, and the outer ends of the cylindrical holes 1a Internal threads are processed on the inner wall. Nozzles 4 and plugs 5 are respectively installed in each cylindrical hole 1a on the nozzle plate 1 from the inside to the outside, wherein the center hole of the nozzle 4 is divided into two sections, and the section near the center of the nozzle plate 1 is a tapered shrinkage hole with a large inside and a small outside. One section is a cylindrical hole. The plug 5 is cylindrical, and the outer wall is processed with external threads. The plug 5 is threaded with the nozzle plate 1. The inner hole of the plug 5 is a regular hexagon and is connected with the center hole of the nozzle 4. The plug 5 is a pair of nozzles. 4 Axial limit, used to limit the relative position of the nozzle 4 in the nozzle plate 1, prevent the nozzle 4 from loosening and detaching from the nozzle plate 1 when the atomizing plate rotates at high speed, and facilitate the installation and disassembly of the nozzle 4.

As shown in Figure 1, the fog flower disc of the present utility model is set on the corresponding cone section of the rotating shaft 8 through the mounting hole on the disc-shaped base 3, and is set on the bottom boss 3c of the disc-shaped base 3 and the lock on the rotating shaft 8. Tightening mechanism 9 is fixed. When the drive motor drives the rotation axis 8 of the atomization disc to rotate, the mist flower disc rotates together with the atomization rotation shaft 8, and the high-speed rotating atomization disc generates a strong centrifugal force, making the liquid in the internal atomization liquid storage space pass through the atomization disc. Each atomizing nozzle 4 is sprayed out from the inner hole corresponding to the plug 5 , so as to be atomized into liquid droplets with a micron scale. The overall diameter of the atomizing disk is flat, which increases the atomization distance; the diameter of the atomizing disk is large, which is conducive to increasing the number of nozzles and ensuring the uniformity of the atomized liquid in the circumferential direction after atomization; at the same time, it reduces the The requirements on the rotating speed of the atomizing disc improve the working conditions of the drive shaft bearing of the atomizing disc, and reduce the requirements for the installation and lubrication of the bearing. The rotational speed of the atomizing disc in the utility model can be lower than 10000r/min, thereby reducing the vibration of the atomizing disc and the motor spindle, and prolonging the service life of the motor. The atomizing disc no longer needs a speed increasing system, which greatly reduces the cost of using the atomizer.

The above embodiments are only used as a further description of the utility model, and the protection scope of the utility model is not limited by the embodiments. In this embodiment, parameters such as the number of atomizing nozzles, the diameter of the atomizing nozzles, and the diameter of the atomizing disc can be changed according to actual production needs, and no limitation is set here.

Claims (6)

1. An atomizing disc of a high-speed centrifugal atomizer, characterized in that: a ring-shaped nozzle disc (1) is located on the lower disc surface of the disc-shaped upper cover (2) and the upper disc surface of the disc-shaped base (3) Between them, the three are fixed by screws (7), and a boss (3a) is arranged in the center of the upper disk surface of the disk-shaped base (3), and the boss (3a) is fed from the feed hole in the center of the disk-shaped upper cover (2). (2a) passes through, and the center of the boss (3a) is provided with a mounting hole for the rotation shaft to pass through; between the disc-shaped upper cover (2), the disc-shaped base (3) and the inner wall of the nozzle disc (1) An annular atomizing liquid storage space is formed, and cylindrical holes are evenly distributed on the circumference of the nozzle plate (1) in the radial direction, and nozzles (4) and plugs (5) are respectively installed in each cylindrical hole from inside to outside. The inner hole of the head (5) is docked with the center hole of the nozzle (4), and the plug (5) axially restricts the nozzle (4). 2. The atomizing disc of the high-speed centrifugal atomizer according to claim 1, characterized in that: the upper disc surface of the disc-shaped base (3) and the outer wall of the central boss (3a) pass through an arc The surface of revolution (3b) transitions; the feed hole (2a) in the center of the disc-shaped loam cake (2) is composed of an upper straight section and a lower cone section, wherein the smallest end of the lower cone section is on the top, and the smallest end of the lower cone section is The diameter is larger than the diameter of the upper straight section. 3. The atomizing disc of the high-speed centrifugal atomizer according to claim 1 or 2, characterized in that: the lower disc surface of the disc-shaped upper cover (2) and the upper disc surface of the disc-shaped base (3) are close to The relative position of the edge is provided with a circular limit step, the diameter of the limit step is adapted to the inner diameter of the nozzle plate (1), and a groove is opened on the surface of the outer plate of the limit step, and a seal is embedded in the groove. Circle (6). 4. The atomizing disc of the high-speed centrifugal atomizer according to claim 1 or 2, characterized in that: the mounting hole in the center of the boss (3a) on the disc-shaped base (3) through which the rotating shaft passes is Tapered holes with a large top and a small bottom. 5. The atomizing disk of the high-speed centrifugal atomizer according to claim 1, characterized in that: the central hole of the nozzle (4) is divided into two sections, and the section close to the center of the nozzle disk (1) is the inner section. A tapered shrinkage hole with a large outside and a small one, and the other section is a cylindrical hole. 6. The atomizing disc of the high-speed centrifugal atomizer according to claim 1, characterized in that: the plug (5) is cylindrical, and the plug (5) is screwed to the nozzle disc (1) , the inner hole of the plug (5) is a regular hexagon.

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