An anti-corrosion and high-temperature-resistant spray gun nozzle structure

Abstract

The application discloses an anti-corrosion and high-temperature-resistant spray gun nozzle structure and belongs to the technical field of industrial flue gas treatment. The spray gun nozzle structure comprises a body. The anti-corrosion and high-temperature-resistant spray gun nozzle structure has the advantages that the corrosion resistance and high-temperature resistance of the device can be improved, the water inlet pipe and the water outlet pipe can be connected with the outside during work, cooling water can be conveyed from the water inlet pipe to the cooling ring through the conveying hole for absorbing the heat generated on the surface of the body due to the high-temperature flue gas transmission, and then flows out from the water outlet pipe, so that the cooling and temperature reduction of the spray gun nozzle can be realized, the stable operation of the spray gun nozzle in a high-temperature environment can be ensured, the ceramic heat insulation layer can effectively insulate heat, the silicon carbide ceramic layer has high hardness and high wear resistance, and has excellent resistance to strong corrosive flue gas, so that the wear and corrosion of the structure under the scouring of high-temperature and high-flow-rate flue gas can be effectively prevented, and the practicality of the device is greatly improved.

Description

Technical Field

[0001] This application relates to the field of industrial flue gas treatment technology, and in particular to a corrosion-resistant and high-temperature resistant spray nozzle structure. Background Technology

[0002] In the field of industrial flue gas treatment, especially in scenarios involving high-temperature and highly corrosive flue gas, the spray nozzle is a key component, and its performance directly affects the operation and stability of the entire flue gas treatment system.

[0003] However, in the current market, common spray nozzles are made of ordinary metal materials when facing high-temperature and highly corrosive industrial fumes. Under high-temperature environments, metals are prone to oxidation, which leads to a decrease in the structural strength of the spray nozzle and a shortened service life. When dealing with industrial fumes containing acidic gases, ordinary metal spray nozzles are easily corroded, resulting in surface pits, perforations, and other phenomena. This not only affects the normal spraying effect of the spray nozzle but may also cause the entire spray gun system to malfunction.

[0004] Therefore, this application proposes a corrosion-resistant and high-temperature resistant spray nozzle structure. Utility Model Content

[0005] This application proposes a corrosion-resistant and high-temperature-resistant spray nozzle structure to solve the problems mentioned in the background art. This corrosion-resistant and high-temperature-resistant spray nozzle structure, by incorporating protective components, an inlet pipe, a delivery hole, a cooling ring, an outlet pipe, an adhesive layer, a ceramic insulation layer, and a silicon carbide ceramic layer, improves the device's corrosion resistance and high-temperature resistance. During operation, the inlet and outlet pipes can be connected to the outside, allowing cooling water to be delivered from the inlet pipe through the delivery hole to the cooling ring to absorb heat generated on the surface of the main body due to high-temperature flue gas. The water then flows out from the outlet pipe, achieving cooling and temperature reduction of the spray nozzle, ensuring stable operation of the spray nozzle in high-temperature environments. The ceramic insulation layer provides effective heat insulation, and the silicon carbide ceramic layer, with its high hardness and high wear resistance, exhibits excellent resistance to highly corrosive flue gas, effectively preventing wear and corrosion under high-temperature, high-velocity flue gas scouring, greatly enhancing the practicality of the device.

[0006] To achieve the above objectives, this application adopts the following technical solution: A corrosion-resistant and high-temperature resistant spray nozzle structure includes a body, a connecting component on one side of the body, a spraying component on the other side of the body, a protective component inside the body to improve the corrosion resistance and high-temperature resistance of the device, and an auxiliary component outside the spraying component.

[0007] In a preferred embodiment, the protective component includes a water inlet pipe installed on one side of the connecting component. The body has a conveying hole inside, which communicates with the water inlet pipe. The body also has a cooling ring inside, which communicates with the conveying hole. A water outlet pipe is installed on one side of the connecting component. The spray component is coated with a ceramic coating. The innermost adhesive layer of the ceramic coating is coated on the outside of the spray component. A ceramic heat insulation layer is coated on the outside of the adhesive layer. A silicon carbide ceramic layer is coated on the outside of the ceramic heat insulation layer. In a preferred embodiment, the connecting assembly includes a connecting pipe, which is fixedly connected to one side of the body. The outer surface of the connecting pipe is provided with external threads, and the interior of the body is provided with a fluid channel, which communicates with the connecting pipe. The structure can be connected to the spray gun body via external threads, and the threaded connection facilitates disassembly. The fluid channel is used to transport liquid for treating industrial flue gas, thereby improving the practicality of the device.

[0008] In a preferred embodiment, the spraying assembly includes a nozzle, which is fixedly connected to one side of the body. The nozzle has a plurality of uniformly arranged spray holes on its front inclined surface, and the spray holes are in communication with the fluid channel. The liquid is transported to the nozzle through the fluid channel. Since the nozzle is opened on the inclined surface at the front end of the nozzle, the nozzle is at a certain angle to the central axis of the overall structure. This allows the sprayed droplets to form a certain scattering angle, expand the spray coverage area, and make more uniform contact with industrial flue gas, thereby improving the flue gas treatment efficiency and enhancing the practicality of the device.

[0009] In a preferred embodiment, the auxiliary component includes an extrusion plate, which is slidably connected to the outside of the nozzle. A spring is fixedly connected to the outside of the extrusion plate, and a PTFE shell is fixedly connected to the outside of the spring. A corresponding hole corresponding to the nozzle is opened on one inclined side of the PTFE shell. By inserting the PTFE shell into the exterior of the body and the spraying assembly, the extrusion plate comes into contact with the surface of the body, thus compressing the spring. The spring then exerts a reaction force on the extrusion plate, causing it to fit tightly against the surface of the body, thereby securing the PTFE shell. Liquid can then be sprayed out from the corresponding holes. This structure provides further protection for the surfaces of the body and the spraying assembly, and is easy to disassemble and install, thus improving the practicality of the device.

[0010] In a preferred embodiment, the fluid channel exhibits a gradually decreasing inner diameter in the direction extending toward the nozzle; By setting the inner diameter of the fluid channel to gradually decrease, the flow velocity of the liquid entering the nozzle gradually increases during the flow process, thereby forming a high-speed jet at the nozzle, improving the kinetic energy of the spray, enhancing the spray effect, and thus improving the practicality of the device.

[0011] In a preferred embodiment, both the body and the connecting components are made of a high-temperature resistant and corrosion-resistant nickel-based alloy structure; Because nickel-based alloys have excellent high-temperature strength and oxidation resistance, they can maintain stable structural strength in high-temperature environments and effectively resist the erosion of high-temperature flue gas. Therefore, adopting high-temperature and corrosion-resistant nickel-based alloy structures for the main body and connecting components can greatly extend their service life and thus improve the practicality of the device.

[0012] In a preferred embodiment, the end of the extrusion plate near the connecting assembly has a chamfered edge; By providing a chamfer at one end of the extrusion plate near the connecting assembly, a guiding function can be provided, facilitating the installation of the extrusion plate and thus improving the practicality of the device.

[0013] The beneficial effects of this application are: 1. This corrosion-resistant and high-temperature resistant spray nozzle structure, by setting up protective components, water inlet pipe, conveying hole, cooling ring, water outlet pipe, adhesive layer, ceramic heat insulation layer and silicon carbide ceramic layer, can improve the corrosion resistance and high-temperature resistance of the device. During operation, the water inlet pipe and water outlet pipe can be connected to the outside, and cooling water is conveyed from the water inlet pipe to the cooling ring through the conveying hole to absorb the heat generated on the surface of the body due to the transfer of high temperature flue gas. Then it flows out from the water outlet pipe, which can realize the cooling and temperature reduction of the spray nozzle, ensuring the stable operation of the spray nozzle in high temperature environment. The ceramic heat insulation layer can effectively insulate heat, and the silicon carbide ceramic layer can have excellent resistance to highly corrosive flue gas due to its high hardness and high wear resistance, which can effectively prevent the structure from wear and corrosion under the scouring of high temperature and high flow rate flue gas, greatly improving the practicality of the device. 2. This corrosion-resistant and high-temperature resistant spray nozzle structure, through the inclusion of auxiliary components, a PTFE shell, corresponding holes, springs, and a compression plate, provides further protection for the main body and the spray assembly. By inserting the PTFE shell into the exterior of the main body and the spray assembly, the compression plate contacts the surface of the main body, compressing the spring. This causes the spring to exert a reaction force on the compression plate, making it tightly adhere to the surface of the main body, thus securing the PTFE shell. Liquid can then be sprayed from the corresponding holes. This structure provides further protection for the surfaces of the main body and the spray assembly, and is easy to disassemble and install, greatly improving the practicality of the device. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of the device in this application; Figure 2 This is a schematic diagram of the internal structure of the main body of this application; Figure 3 This is a cross-sectional view of the ceramic coating of this application; Figure 4 This is a cross-sectional view of the auxiliary components of this application; Figure 5 For this application Figure 4 Enlarged view of point A in the middle.

[0015] Numbered components in the diagram: 1. Body; 2. Connecting assembly; 21. Connecting pipe; 22. External thread; 23. Fluid channel; 3. Spray assembly; 31. Nozzle; 32. Spray hole; 4. Protective assembly; 41. Water inlet pipe; 42. Conveying hole; 43. Cooling ring; 44. Water outlet pipe; 45. Adhesive layer; 46. Ceramic insulation layer; 47. Silicon carbide ceramic layer; 5. Auxiliary assembly; 51. PTFE shell; 52. Corresponding hole; 53. Spring; 54. Extrusion plate; 541. Chamfer. Detailed Implementation

[0016] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

[0017] Reference Figure 1-2 A corrosion-resistant and high-temperature resistant spray nozzle structure includes a body 1. A connecting component 2 is provided on one side of the body 1. The connecting component 2 includes a connecting pipe 21, which is fixedly connected to one side of the body 1. An external thread 22 is provided on the outer surface of the connecting pipe 21. A fluid channel 23 is provided inside the body 1 and communicates with the connecting pipe 21. The structure can be connected to the spray gun body through the external thread 22, and the threaded connection facilitates disassembly. The fluid channel 23 is used to transport liquid for treating industrial flue gas, thereby improving the practicality of the device.

[0018] Reference Figure 1-2 On the other side of the main body 1, a spray assembly 3 is provided. The spray assembly 3 includes a nozzle 31, which is fixedly connected to one side of the main body 1. The front inclined surface of the nozzle 31 is provided with a plurality of uniformly arranged spray holes 32, and the spray holes 32 are connected to the fluid channel 23. Liquid is transported to the spray holes 32 through the fluid channel 23. Since the spray holes 32 are opened on the front inclined surface of the nozzle 31, the spray holes 32 are at a certain angle to the central axis of the overall structure, which can make the sprayed droplets form a certain scattering angle, expand the spray coverage area, and make more uniform contact with industrial flue gas, improve the flue gas treatment efficiency, and thus improve the practicality of the device.

[0019] Reference Figure 2-3The main body 1 is equipped with a protective component 4, which is used to improve the corrosion resistance and high temperature resistance of the device. The protective component 4 includes a water inlet pipe 41, which is fixedly installed on one side of the connecting pipe 21. The main body 1 has a conveying hole 42, which is connected to the water inlet pipe 41. The main body 1 has a cooling ring 43, which is connected to the conveying hole 42. A water outlet pipe 44 is fixedly installed on one side of the connecting pipe 21. The spraying component 3 is coated with a ceramic coating. The innermost adhesive layer 45 of the ceramic coating is coated on the outside of the spraying component 3. The adhesive layer 45 is coated with a ceramic heat insulation layer 46. The ceramic heat insulation layer 46 is coated with a silicon carbide ceramic layer 47.

[0020] Reference Figure 1 , 4 An auxiliary component 5 is provided on the outside of the spray assembly 3. The auxiliary component 5 includes a squeezing plate 54, which is slidably connected to the outside of the nozzle 31. A spring 53 is fixedly connected to the outside of the squeezing plate 54, and a PTFE shell 51 is fixedly connected to the outside of the spring 53. A corresponding hole 52 corresponding to the spray hole 32 is opened on one side of the PTFE shell 51. By inserting the PTFE shell 51 into the outside of the body 1 and the spray assembly 3, the squeezing plate 54 will come into contact with the surface of the body 1, thus squeezing the spring 53 and compressing it. This causes the spring 53 to exert a reaction force on the squeezing plate 54, making the squeezing plate 54 tightly adhere to the surface of the body 1, thereby fixing the PTFE shell 51. Liquid can be sprayed out from the corresponding hole 52. This structure can further protect the surface of the body 1 and the spray assembly 3, and is relatively easy to disassemble and install, thereby improving the practicality of the device.

[0021] Reference Figure 2 The inner diameter of the fluid channel 23 gradually decreases as it extends toward the nozzle 31. By setting the inner diameter of the fluid channel 23 to gradually decrease, the flow velocity of the liquid entering the nozzle 32 can gradually increase during the flow process, thereby forming a high-speed jet at the nozzle 32, improving the kinetic energy of the spray, enhancing the spray effect, and thus improving the practicality of the device.

[0022] Reference Figure 1-2 Both the main body 1 and the connecting component 2 are made of high-temperature and corrosion-resistant nickel-based alloy. Because nickel-based alloy has excellent high-temperature strength and oxidation resistance, it can maintain stable structural strength in high-temperature environments and effectively resist the erosion of high-temperature flue gas. Therefore, using high-temperature and corrosion-resistant nickel-based alloy for the main body 1 and the connecting component 2 can greatly extend their service life and thus improve the practicality of the device.

[0023] Reference Figure 4The end of the extrusion plate 54 near the connecting component 2 is provided with a guide angle 541; by providing a guide angle 541 at the end of the extrusion plate 54 near the connecting component 2, it can play a guiding role, which facilitates the installation of the extrusion plate 54 and thus improves the practicality of the device.

[0024] Working principle: When this structure is working, it can be connected to the spray gun body through the external thread 22. The liquid is transported to the nozzle 32 through the fluid channel 23. Since the nozzle 32 is opened on the front inclined surface of the nozzle 31, the nozzle 32 is at a certain angle to the central axis of the overall structure. This allows the sprayed droplets to form a certain scattering angle, expand the spray coverage, and make more uniform contact with industrial flue gas. Furthermore, by setting the inner diameter of the fluid channel 23 to gradually decrease, the flow velocity of the liquid entering the nozzle 32 gradually increases during the flow process, thereby forming a high-speed jet at the nozzle 32, improving the kinetic energy of the spray and enhancing the spray effect. Because nickel-based alloys possess excellent high-temperature strength and oxidation resistance, they maintain stable structural strength under high-temperature environments and effectively resist the erosion of high-temperature flue gas. Therefore, adopting a high-temperature and corrosion-resistant nickel-based alloy structure for the body 1 and connecting components 2 can greatly extend their service life. Connecting the inlet pipe 41 and outlet pipe 44 to the outside allows cooling water to be transported from the inlet pipe 41 through the delivery hole 42 to the cooling ring 43 to absorb the heat generated on the surface of the body 1 due to the transfer of high-temperature flue gas. The water then flows out from the outlet pipe 44, achieving cooling of the spray nozzle and ensuring stable operation of the spray nozzle under high-temperature conditions. Effective heat insulation is achieved through the ceramic insulation layer 46, while the silicon carbide ceramic layer 47, with its high hardness and high wear resistance, provides protection against strong corrosion. The PTFE shell 51 has excellent resistance to volatile gases, effectively preventing wear and corrosion of the structure under high temperature and high flow rate flue gas scouring. During the process of inserting the PTFE shell 51 into the body 1 and the injection assembly 3, the extrusion plate 54 will come into contact with the surface of the body 1, thus compressing the spring 53. This causes the spring 53 to exert a reaction force on the extrusion plate 54, making the extrusion plate 54 fit tightly against the surface of the body 1, thereby fixing the PTFE shell 51. Liquid can be sprayed out from the corresponding hole 52. This structure can further protect the surface of the body 1 and the injection assembly 3. By providing a guide angle 541 at the end of the extrusion plate 54 near the connecting assembly 2, it can play a guiding role and facilitate the installation of the extrusion plate 54.

[0025] The above description is merely a preferred embodiment of this application, but the scope of protection of this application is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this application, based on the technical solution and the inventive concept of this application, should be included within the scope of protection of this application.

Claims

1. A corrosion-resistant and high-temperature resistant spray nozzle structure, comprising a body (1), characterized in that, A connecting component (2) is provided on one side of the main body (1), a spraying component (3) is provided on the other side of the main body (1), a protective component (4) is provided inside the main body (1), the protective component (4) is used to improve the corrosion resistance and high temperature resistance of the device, and an auxiliary component (5) is provided outside the spraying component (3).

2. The corrosion-resistant and high-temperature resistant spray gun nozzle structure according to claim 1, characterized in that, The protective component (4) includes a water inlet pipe (41), and the water inlet pipe (41) is installed on one side of the connecting component (2). The body (1) has a conveying hole (42) inside, and the conveying hole (42) is connected to the water inlet pipe (41). The body (1) has a cooling ring (43) inside, and the cooling ring (43) is connected to the conveying hole (42). The connecting component (2) has a water outlet pipe (44) installed on one side. The spray component (3) is coated with a ceramic coating. The innermost adhesive layer (45) of the ceramic coating is coated on the outside of the spray component (3). The adhesive layer (45) is coated with a ceramic heat insulation layer (46) on the outside. The ceramic heat insulation layer (46) is coated with a silicon carbide ceramic layer (47) on the outside.

3. The corrosion-resistant and high-temperature resistant spray gun nozzle structure according to claim 1, characterized in that, The connecting component (2) includes a connecting pipe (21), and the connecting pipe (21) is fixedly connected to one side of the body (1). The outer surface of the connecting pipe (21) is provided with an external thread (22), and the inside of the body (1) is provided with a fluid channel (23), and the fluid channel (23) is connected to the connecting pipe (21).

4. The corrosion-resistant and high-temperature resistant spray gun nozzle structure according to claim 3, characterized in that, The spray assembly (3) includes a nozzle (31), and the nozzle (31) is fixedly connected to one side of the body (1). The front end of the nozzle (31) has a plurality of uniformly arranged spray holes (32), and the spray holes (32) are connected to the fluid channel (23).

5. The corrosion-resistant and high-temperature resistant spray gun nozzle structure according to claim 4, characterized in that, The auxiliary component (5) includes an extrusion plate (54), and the extrusion plate (54) is slidably connected to the outside of the nozzle (31). A spring (53) is fixedly connected to the outside of the extrusion plate (54), and a PTFE shell (51) is fixedly connected to the outside of the spring (53). A corresponding hole (52) corresponding to the nozzle (32) is opened on one side of the PTFE shell (51).

6. The corrosion-resistant and high-temperature resistant spray gun nozzle structure according to claim 3, characterized in that, The fluid channel (23) extends toward the nozzle (31) with its inner diameter gradually decreasing.

7. The corrosion-resistant and high-temperature resistant spray gun nozzle structure according to claim 1, characterized in that, Both the main body (1) and the connecting component (2) are made of nickel-based alloy with high temperature resistance and corrosion resistance.

8. The corrosion-resistant and high-temperature resistant spray gun nozzle structure according to claim 5, characterized in that, The extrusion plate (54) has a chamfer (541) at one end near the connecting assembly (2).

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