Rotary atomizing disc
By using carbon ceramic composite materials and a rotary atomizing disk with simplified structure, the problem of prone to cracking of the flow block is solved, and higher toughness and wear resistance are achieved, which extends the equipment life and reduces cost and wear.
Patent Information
- Application Number
- CN202323406992.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-14
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2033-12-14
AI Technical Summary
The flow guide blocks of existing rotary atomizing disks are prone to cracking, resulting in material failure and rapid wear of rotary atomizing disks, increasing bearing wear and motor load, and reducing equipment life.
The flow guide block made of carbon ceramic composite material eliminates the traditional disk structure and forms a gap and nozzle structure through bolted connections of carbon fiber materials, improving the toughness and high temperature resistance of the flow guide block, and simplifying the product structure.
It improves the toughness and wear resistance of the flow guide block, reduces the weight and processing cost of the rotary atomizer disk, extends the equipment life, and reduces wear and motor load.
Smart Images
Figure CN222267491U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of flue gas treatment equipment, and in particular relates to a rotary atomizing disk. Background Art
[0002] The rotary atomizer is a key component of the rotary atomizer in the waste incineration tail gas purification equipment. Its atomization performance directly affects the utilization rate of the absorbent. The semi-dry spray drying purification process often uses Ca(OH)2 slurry as the absorbent. The Ca(OH)2 slurry is sent to the rotary atomizer disk with a speed of up to 8500-15000r / min installed on the top of the absorption tower. Using the effect of the high-speed rotary atomizer disk, when the Ca(OH)2 slurry enters from the middle of the rotary disk and diffuses to the surface of the rotary disk, the liquid is subjected to two forces: one is that it is accelerated and split and atomized under the action of centrifugal force and gravity; the other is that when the liquid contacts the surrounding air, there is friction to promote the formation of droplets. The former is centrifugal atomization, and the latter is speed atomization. In fact, the two exist at the same time.
[0003] At present, the main guide blocks are independent and integral. In the independent structure, wear-resistant materials (ceramic or cemented carbide) are used for processing and forming, which can meet the performance requirements of atomized droplets. However, the materials currently used are all isotropic materials, and their inherent brittleness makes it impossible for them to eliminate stress by self-deformation like metal materials. The stress concentration at the tiny defects can easily cause cracks on the surface of the guide block and the cracks to expand unstably. After the cracks occur, the guide block material will peel off, causing the guide block to lose its protective effect on the metal parts of the rotating atomization disk, so that the metal parts of the rotating atomization disk are quickly worn under the action of the lime slurry, causing the rotating atomization disk to fail.
[0004] At the same time, due to the high density of ceramics and cemented carbide, the mass of the rotary atomizer disk is large. When the rotary atomizer disk is used at high speed, its inertia is also large, which increases the wear of sliding parts such as bearings, and also increases the load of the rotary atomizer motor, reducing the life of the motor. Utility Model Content
[0005] The utility model aims to provide a rotating atomizing disc to solve the technical problem that the guide block of the existing atomizing disc is easy to crack.
[0006] The present application provides a rotary atomizing disk, comprising a lower disk and a guide block;
[0007] The lower plate comprises a plate body and a rotating shaft located in the center of the plate body;
[0008] The guide block is sleeved on the outer periphery of the rotating shaft and fixed on the upper surface of the disc body, and a gap is formed between the guide disc and the outside of the rotating shaft;
[0009] The guide block has a plurality of nozzles in a circumferential array which are respectively connected to the gaps;
[0010] The guide block is made of a carbon-ceramic composite material.
[0011] In one embodiment of the present application, the guide block includes an upper circular ring and a lower circular ring, and a plurality of columns located between the upper and lower circular rings;
[0012] The nozzle is formed between the adjacent columns.
[0013] In one embodiment of the present application, the guide block is integrally formed;
[0014] The lower plate is integrally formed.
[0015] In one embodiment of the present application, an annular groove is provided on the upper surface of the disc body for accommodating the lower ring; and
[0016] After the lower circular ring is accommodated in the annular groove, the upper surface of the lower circular ring is flush with the upper surface of the disc body.
[0017] In one embodiment of the present application, the rotating shaft includes a rod portion and a connecting portion;
[0018] The connecting portion is connected to the disc body; and
[0019] The upper circular ring is sleeved on the outer circumference of the rod portion, and the gap is formed between the upper circular ring and the rod portion;
[0020] The lower circular ring is sleeved on the outer periphery of the bottom of the connecting part and is tightly matched with the outer periphery of the bottom of the connecting part.
[0021] In one embodiment of the present application, the outer wall surface of the connecting portion is an arc-shaped surface, the upper portion is connected to the outer peripheral surface of the rod portion, and the lower portion is connected to the upper surface of the lower ring.
[0022] In one embodiment of the present application, the disc body and the guide block are connected by a plurality of bolts; and
[0023] The bolts are connected with the columns after passing through the disc body.
[0024] In one embodiment of the present application, the bolt is made of carbon fiber material;
[0025] The lower plate is made of Hastelloy or titanium alloy.
[0026] In one embodiment of the present application, the outer edge of the upper surface of the lower plate is provided with an arc chamfer.
[0027] In one embodiment of the present application, the density of the guide block is 1.8-2.2 g / cm 3, tensile strength is 90~130MPa, and flexural strength is 120~160MPa.
[0028] The beneficial effects of the utility model are:
[0029] Different from the prior art, the guide block of the rotary atomizing disk of the present application adopts a carbon-ceramic composite material, which is lighter, has better friction performance and better toughness than conventional cemented carbide and ceramic materials, and its high temperature resistance is greatly improved; the upper disk structure of the traditional atomizing disk is eliminated, the product structure is simplified, and the weight is further reduced, thereby improving the dynamic response capability of the atomizing disk; and the upper disk structure is eliminated, overcoming the defect of high cost of processing threads of the upper disk structure using cemented carbide and ceramic materials.
[0030] Other features and advantages of the utility model will be described in the following description, and partly become apparent from the description, or understood by practicing the utility model. The purpose and other advantages of the utility model are realized and obtained by the structures particularly pointed out in the description and the drawings.
[0031] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS
[0032] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0033] Figure 1 It is a three-dimensional diagram of a rotary atomizing disk of a preferred embodiment of the utility model;
[0034] Figure 2 It is a cross-sectional view of a rotary atomizing disk of a preferred embodiment of the utility model;
[0035] Figure 3 It is a schematic diagram of the assembly of a rotary atomizing disk of a preferred embodiment of the utility model;
[0036] Figure 4 It is a cross-sectional view of a lower plate of a preferred embodiment of the utility model.
[0037] In the figure:
[0038] Lower plate 1, plate body 11, annular groove 111, rotating shaft 12, rod portion 121, connecting portion 122, guide block 2, nozzle 21, upper ring 22, lower ring 23, column 24, gap 3, bolt 4. DETAILED DESCRIPTION
[0039] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution of the utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0040] The present application provides a rotary atomizing disk, which is described in detail below. It should be noted that the description order of the following embodiments does not limit the preferred order of the embodiments of the present application. In the following embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, please refer to the relevant description of other embodiments.
[0041] In order to solve the technical problem that the guide block of the existing atomizing disk is easy to crack, an embodiment of the present application provides a rotating atomizing disk. Figure 1 , Figure 2 and Figure 3 As shown, the rotary atomizing disk includes a lower disk 1 and a guide block 2; the lower disk 1 includes a disk body 11 and a rotating shaft 12 located in the center of the disk body 11; the guide block 2 is sleeved on the outer periphery of the rotating shaft 12 and fixed on the upper surface of the disk body 11, and a gap 3 is formed between the guide block 2 and the outside of the rotating shaft 12; a plurality of nozzles 21 are arranged in a circular array on the guide block 2 and are respectively connected to the gap 3; wherein the material of the guide block 2 is a carbon-ceramic composite material.
[0042] In this embodiment, the Ca(OH) 2 slurry can flow into the guide block 2 from the gap 3 formed between the guide block 2 and the outside of the rotating shaft 12, and then be thrown out from the nozzle 21 to be atomized.
[0043] The guide block 2 is made of carbon-ceramic composite material, which is lighter, has better friction performance and toughness than conventional hard alloy and ceramic materials, and has greatly improved high temperature resistance. Moreover, this type of material has greatly improved high temperature resistance than ordinary carbon fiber materials.
[0044] Preferably, the density of the guide block 2 is 1.8-2.2 g / cm 3 , tensile strength is 90~130MPa, and flexural strength is 120~160MPa.
[0045] In the traditional atomizer disc, the conventional design is to connect the upper disc and the lower disc to the guide block together, and threaded holes need to be processed on all three. However, the cost of processing threads with conventional cemented carbide and ceramic materials is relatively high. The atomizer disc of this embodiment eliminates the upper disc structure and only needs to be processed on the guide block 2 and the lower disc 1, which reduces the processing cost. In addition, the atomizer disc of this embodiment adopts a carbon-ceramic composite material with the process performance of economical processing of threads, further reducing the processing cost. In addition, the elimination of the upper disc structure of the traditional atomizer disc can simplify the product structure and further reduce the weight, thereby improving the dynamic response capability of the atomizer disc.
[0046] See also Figure 2 and Figure 3 As an optional implementation of the guide block 2, the guide block 2 includes an upper ring 22 and a lower ring 23, and a plurality of columns 24 located between the upper and lower rings 23; the nozzle 21 is formed between adjacent columns 24.
[0047] Preferably, the guide block 2 is integrally formed; and the lower plate 1 is integrally formed.
[0048] Optionally, the lower plate 1 may be made of, but not limited to, corrosion-resistant metals such as Hastelloy or titanium alloy.
[0049] See also Figure 2 , Figure 3 and Figure 4 Optionally, an annular groove 111 is provided on the upper surface of the disk body 11 for accommodating the lower ring 23 ; and after the lower ring 23 is accommodated in the annular groove 111 , the upper surface of the lower ring 23 is flush with the upper surface of the disk body 11 .
[0050] In this embodiment, an annular groove 111 for accommodating the lower ring 23 is provided on the upper surface of the disc body 11, so that the assembly of the guide block 2 and the disc body 11 can be facilitated; and the lower ring 23 is tightly embedded in the annular groove 111, which can protect the disc body 11 from the impact of slurry.
[0051] See also Figure 2 , Figure 3 and Figure 4 As shown, the rotating shaft 12 includes a rod portion 121 and a connecting portion 122; the connecting portion 122 is connected to the disk body 11; and the upper ring 22 is sleeved on the outer periphery of the rod portion 121, and the gap 3 is formed between the rod portion 121; the lower ring 23 is sleeved on the bottom outer periphery of the connecting portion 122, and is tightly matched with the bottom outer periphery of the connecting portion 122.
[0052] Furthermore, the outer wall surface of the connecting portion 122 is an arc-shaped surface, the upper portion is connected to the outer peripheral surface of the rod portion 121 , and the lower portion is connected to the upper surface of the lower ring 23 .
[0053] In this embodiment, the gap 3 is formed between the upper ring 22 and the rod portion 121, and the lower ring 23 is tightly matched with the bottom periphery of the connecting portion 122, so that the lime slurry can be guided downward from the gap 3 through the arc-shaped outer wall surface of the connecting portion 122 and directly enter the space formed by the upper ring 22 and the lower ring 23, thereby preventing the slurry from impacting the disk body 11.
[0054] See also Figure 2 and Figure 3 The disc body 11 is connected to the guide block 2 by a plurality of bolts 4; and the bolts 4 pass through the disc body 11 and are connected to the column 24.
[0055] Preferably, the bolt 4 is made of carbon fiber material, which can improve corrosion resistance.
[0056] See also Figure 4 As shown, the outer edge of the upper surface of the lower plate 1 is provided with a circular chamfer, which can protect the lower plate 1 from the impact of lime slurry during the use of the atomizing plate and improve the assembly process.
[0057] It should be noted that carbon-ceramic composite materials are a new type of multiphase composite material formed by using a three-dimensional cross-linked carbon fiber as a reinforcing skeleton and utilizing a high-temperature Si-chemical reaction to react the carbon element and Si element in the carbon fiber into SiC ceramics, which are then attached to the surface of the carbon fiber. This is an existing technology material that can be purchased from the market.
[0058] In summary, the rotary atomizing disk of the present application utilizes the characteristic that carbon-ceramic composite materials can economically process threads, innovates the structure of the atomizing disk, cancels the upper disk structure in the conventional design, simplifies the product structure, and further reduces the weight, thereby improving the dynamic response capability of the atomizing disk, reducing the wear and motor load of the rotary atomizer, and increasing the life of the rotary atomizer; carbon-ceramic composite materials (CMC) have the characteristics of high strength, high modulus, low density, and high temperature resistance. Since the second phase toughening material is introduced into the ceramic matrix, the cracks in the ceramic matrix are prevented from extending and becoming feather-shaped, so the toughness is greater than that of a single ceramic, and the inherent brittleness of a single ceramic material is overcome, the wear resistance of the guide block can be improved, and the inherent brittleness of ceramic and cemented carbide materials is overcome, which is easy to crack and cause the failure mode of the guide block to break, thereby increasing the life of parts.
[0059] The various devices selected in this application (components whose specific structures are not described) are all universal standard parts or components known to technical personnel in this field, and their structures and principles can be known to technical personnel through technical manuals or through conventional experimental methods.
[0060] In the description of the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection.
[0061] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.
[0062] Based on the above ideal embodiments of the utility model, the relevant staff can make various changes and modifications without deviating from the technical concept of the utility model through the above description. The technical scope of the utility model is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.
Claims
1. A rotary atomizing disk, characterized in that: It comprises a lower plate (1) and a guide block (2); The lower plate (1) comprises a plate body (11) and a rotating shaft (12) located at the center of the plate body (11); The guide block (2) is sleeved on the outer circumference of the rotating shaft (12) and fixed on the upper surface of the disk body (11), and a gap (3) is formed between the guide block (2) and the outside of the rotating shaft (12); The guide block (2) has a plurality of nozzles (21) arranged in a circumferential array on the guide block (2) and each of the nozzles is connected to the gap (3). in The material of the guide block (2) is a carbon-ceramic composite material.
2. The rotary atomizing disk according to claim 1, characterized in that: The guide block (2) comprises an upper circular ring (22), a lower circular ring (23), and a plurality of upright posts (24) located between the upper and lower circular rings (23); The nozzle (21) is formed between adjacent columns (24).
3. The rotary atomizing disk according to claim 2, characterized in that: The guide block (2) is integrally formed; The lower plate (1) is integrally formed.
4. The rotary atomizing disk according to claim 2, characterized in that: The upper surface of the disk body (11) is provided with an annular groove (111) for accommodating the lower ring (23); and After the lower circular ring (23) is accommodated in the annular groove (111), the upper surface of the lower circular ring (23) is flush with the upper surface of the disc body (11).
5. The rotary atomizing disk according to claim 4, characterized in that: The rotating shaft (12) comprises a rod portion (121) and a connecting portion (122); The connecting portion (122) is connected to the disk body (11); and The upper circular ring (22) is sleeved on the outer circumference of the rod portion (121), and the gap (3) is formed between the upper circular ring (22) and the rod portion (121); The lower circular ring (23) is sleeved on the outer periphery of the bottom of the connecting portion (122) and is tightly matched with the outer periphery of the bottom of the connecting portion (122).
6. The rotary atomizing disk according to claim 5, characterized in that: The outer wall surface of the connecting portion (122) is an arc-shaped surface, the upper portion of which is connected to the outer peripheral surface of the rod portion (121), and the lower portion of which is connected to the upper surface of the lower circular ring (23).
7. The rotary atomizing disk according to claim 2, characterized in that: The disk body (11) is connected to the guide block (2) via a plurality of bolts (4); and The bolt (4) passes through the disc body (11) and is connected to the column (24).
8. The rotary atomizing disk according to claim 7, characterized in that: The bolt (4) is made of carbon fiber material; The lower plate (1) is made of Hastelloy alloy or titanium alloy.
9. The rotary atomizing disk according to claim 2, characterized in that: The outer edge of the upper surface of the lower plate (1) is provided with a circular arc chamfer.
10. The rotary atomizing disk according to claim 1, characterized in that: The density of the guide block (2) is 1.8 to 2.2 g / cm 3 , tensile strength is 90~130MPa, and flexural strength is 120~160MPa.