Distributor

Abstract

A cylindrical groove and a feeding hole communicating with the side wall of the cylindrical groove are formed in an installation structure, an included angle exists between the axis of the feeding hole and the axis of the cylindrical groove, gas and powder enter the cylindrical groove from the feeding hole, a rotating running trend exists, and gas and powder mixing is promoted. A cylindrical protrusion in the installation structure is located in the cylindrical groove, one end of the cylindrical protrusion is connected with the groove bottom of the cylindrical groove, an inner hole of the cylindrical protrusion is communicated with the feeding hole, a top cover structure which is connected with the installation structure and covers a groove opening of the cylindrical groove is further arranged in the distributor, and a cylindrical part of the top cover structure stretches into the inner hole of the cylindrical protrusion in a suspended mode and is spaced from the cylindrical protrusion. And the plurality of discharge holes are communicated with one end of the inner hole of the cylindrical part at intervals. The running path of gas and powder in the distributor is increased, gas and powder are mixed more evenly, the mixing effect of the evenly-mixed gas and powder and a molten pool is better, the quality of finally obtained steel can be improved, and the technical problem that the quality of the obtained steel is not ideal enough is solved to a certain extent.

Description

Technical Field

[0001] This application belongs to the technical field of converter bottom powder injection equipment, and particularly relates to a distributor. Background Technology

[0002] The converter bottom powder injection process blows powder into the molten pool through a bottom blowing lance, significantly increasing the contact area between the powder and the molten steel, enhancing the stirring effect of the molten pool, and improving the quality of the steel. The gas-powder mixture at the bottom of the converter can enter the molten pool through the injection canister and the lance.

[0003] Currently, a distributor is installed between the injection tank and the spray gun. After the powder and gas are distributed in the distributor, they are sprayed into the molten pool through the spray gun. However, the gas and powder are not mixed evenly in the distributor, which will affect the quality of the final steel and result in an unsatisfactory steel quality. Utility Model Content

[0004] This application aims to at least partially solve the technical problem of suboptimal steel quality. To this end, this application provides a distributor.

[0005] This application provides a distributor, including:

[0006] The mounting structure includes a cylindrical groove, a feed hole, and a cylindrical protrusion. The opening of the cylindrical groove is radially narrowed. The feed hole is connected to the side wall of the cylindrical groove, and there is an angle between the axis of the feed hole and the axis of the cylindrical groove. The cylindrical protrusion is located inside the cylindrical groove and one end is connected to the bottom of the cylindrical groove. The inner hole of the cylindrical protrusion is connected to the feed hole.

[0007] A top cover structure is connected to the mounting structure and covers the opening of the cylindrical groove. The top cover structure has a cylindrical part and multiple discharge holes. The cylindrical part extends into the inner hole of the cylindrical protrusion and is spaced apart from the cylindrical protrusion. The multiple discharge holes are spaced apart and communicate with one end of the inner hole of the cylindrical part.

[0008] In some or more embodiments, the plurality of discharge holes are evenly spaced along the circumference of the cylindrical portion and are all connected to one end of the inner hole of the cylindrical portion.

[0009] In some or more embodiments, the top cover structure further includes:

[0010] The dividing section is connected to the inner peripheral wall of the cylindrical section and forms a plurality of through holes between the dividing section and the inner peripheral wall of the cylindrical section. The plurality of through holes are spaced apart along the circumference of the cylindrical section, and each through hole is disposed opposite to one of the discharge holes.

[0011] In some or more embodiments, the top cover structure includes:

[0012] The cover body connects to the mounting structure and covers the opening of the cylindrical groove. One end of the cylindrical part is connected to the cover body and extends into the cylindrical groove. The discharge hole is located on the cover body and communicates with one end of the inner hole of the cylindrical part.

[0013] A flow guide is connected to the cover and a plurality of discharge holes surround the flow guide.

[0014] In some or more embodiments, the cylindrical portion is coaxial with the cylindrical protrusion, the outer diameter of the cylindrical portion is smaller than the inner diameter of the cylindrical protrusion, and the cylindrical portion is spaced apart from the bottom of the groove.

[0015] In some or more embodiments, the cylindrical protrusion is coaxial with the cylindrical groove and lower than the cylindrical groove, the outer diameter of the cylindrical protrusion is smaller than the groove diameter of the cylindrical groove, and one end of the feed hole is connected to the groove wall of the cylindrical groove and is opposite to the cylindrical protrusion.

[0016] In some or more embodiments, the feed hole is located at the end of the cylindrical groove away from the top cover structure.

[0017] In some or more embodiments, the mounting structure is provided with two feed holes spaced apart and communicating with the sidewalls of the cylindrical groove, and the mounting structure further includes:

[0018] A control valve, connected to the mounting structure and used to control the opening and closing of one of the feed holes.

[0019] In some or all embodiments, the two feed holes are respectively connected to both sides of the cylindrical groove, the axes of the two feed holes extend in the same direction and the openings of the two feed holes face opposite directions.

[0020] In some or more embodiments, the mounting structure includes:

[0021] The main body is cylindrical with a feed hole located on it. One end of the main body tapers radially and is detachably connected to the top cover structure.

[0022] The annular portion has its outer peripheral wall connected to the inner peripheral wall of one end of the main body, and one end of the cylindrical portion is connected to the annular portion;

[0023] The base is detachably connected to the main body and closes the inner hole of the annular portion. The base and the annular portion close the other end of the main body to form the cylindrical groove.

[0024] The beneficial effects provided by one or more embodiments of this application are as follows:

[0025] The mounting structure includes a cylindrical groove and a feed hole connected to the side wall of the cylindrical groove. An angle exists between the axis of the feed hole and the axis of the cylindrical groove. When the gas-powder mixture injected from the bottom of the converter enters the cylindrical groove through the feed hole, it tends to rotate along the circumferential wall of the groove, promoting uniform mixing. A cylindrical protrusion in the mounting structure is located inside the cylindrical groove and one end is connected to the bottom of the groove. The inner hole of the cylindrical protrusion connects to the feed hole, allowing the gas-powder mixture entering through the feed hole to also contact the outer circumferential wall of the cylindrical protrusion, further promoting mixing. The cylindrical groove has a radially contracting opening. The distributor also has a top cover structure that connects to the mounting structure and covers the opening of the cylindrical groove. The cylindrical part of the top cover structure extends into the inner hole of the cylindrical protrusion and is spaced apart from the cylindrical protrusion. There is a space between the outer peripheral wall of the cylindrical part and the inner peripheral wall of the cylindrical protrusion. Multiple discharge holes are intermittently connected to one end of the inner hole of the cylindrical part. As the air and powder continuously enter the cylindrical groove, the air and powder tend to move towards the discharge holes. The air and powder can move and gather towards the opening of the cylindrical groove, then enter the inner hole of the cylindrical protrusion, and run and mix between the inner peripheral wall of the cylindrical protrusion and the outer peripheral wall of the cylindrical part. After that, it enters the inner hole of the cylindrical part from the inner hole of the cylindrical protrusion and flows out from the multiple discharge holes. The setting of the cylindrical protrusion and the cylindrical part is equivalent to increasing the path of the air and powder in the distributor, so that the air and powder have more time to mix evenly. The gas and powder entering the distributor have a relatively long path and will collide with the side walls of the cylindrical groove, as well as with the cylindrical protrusions and cylindrical parts to promote gas-powder mixing. All of these factors can improve the uniformity of gas-powder mixing. The uniformly mixed gas and powder finally enter the spray gun and other equipment through multiple discharge holes to enter the molten pool. The better mixing effect between the uniformly mixed gas and powder and the molten pool can improve the quality of the final steel and, to a certain extent, solve the technical problem of the unsatisfactory quality of the obtained steel. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 The diagram shows a schematic representation of a dispenser in some or all embodiments of this application.

[0028] Figure 2 A cross-sectional view of a top cover structure is shown in some or some embodiments of this application.

[0029] Figure 3 A cross-sectional view of an installation structure is shown in some or some embodiments of this application.

[0030] Figure 4The diagram shows a structural schematic of a main body and an annular portion in some or certain embodiments of this application.

[0031] Figure 5 The diagram shows a structural schematic of a base in some or certain embodiments of this application.

[0032] Explanation of reference numerals in the attached drawings: 1. Installation structure; 11. Columnar groove; 12. Feed hole; 13. Cylindrical protrusion; 14. Main body; 141. First section; 142. Second section; 15. Annular part; 16. Base; 161. Disc boss; 2. Top cover structure; 21. Cylindrical part; 22. Discharge hole; 23. Dividing part; 231. Through hole; 24. Cover body; 25. Guide part; 3. Discharge pipe. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0034] It should be noted that all directional indications in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0035] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0036] Furthermore, in this utility model, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0037] In related technologies, a funnel-shaped distributor is installed between the injection can and the spray gun. The powder and gas are distributed in the distributor and then injected into the molten pool through the spray gun. However, the distributor's mixing and distribution of the gas and powder is not very effective; the gas and powder are not mixed sufficiently, resulting in poor mixing between the gas and powder entering the spray gun and the molten pool. This affects the uniformity of composition and temperature within the molten pool, impacting the quality of the obtained steel and leading to a technical problem of suboptimal steel quality. This application provides a distributor that can at least partially solve the above-mentioned technical problems.

[0038] The present application will now be described in conjunction with the accompanying drawings:

[0039] Figure 1 The present application shows a schematic diagram of the structure of a dispenser in some or certain embodiments, with reference to... Figure 1 This application provides a dispenser, including:

[0040] The mounting structure 1 includes a cylindrical groove 11, a feed hole 12, and a cylindrical protrusion 13. The feed hole 12 is connected to the side wall of the cylindrical groove 11, and there is an angle between the axis of the feed hole 12 and the axis of the cylindrical groove 11. The cylindrical protrusion 13 is located inside the cylindrical groove 11 and one end is connected to the bottom of the cylindrical groove 11. The inner hole of the cylindrical protrusion 13 is connected to the feed hole 12.

[0041] The top cover structure 2 is connected to the mounting structure 1 and covers the opening of the cylindrical groove 11. The top cover structure 2 is provided with a cylindrical part 21 and a plurality of discharge holes 22. The cylindrical part 21 extends into the inner hole of the cylindrical protrusion 13 in a suspended manner and is spaced apart from the cylindrical protrusion 13. The plurality of discharge holes 22 are spaced apart and connected to one end of the inner hole of the cylindrical part 21.

[0042] The mounting structure 1 includes a cylindrical groove 11 and a feed hole 12 that connects to the side wall of the cylindrical groove 11. The axis of the feed hole 12 forms an angle with the axis of the cylindrical groove 11. Therefore, after the gas-powder mixture injected from the bottom of the converter enters the cylindrical groove 11 through the feed hole 12, the gas-powder mixture tends to rotate along the peripheral wall of the cylindrical groove 11, promoting uniform mixing. The cylindrical protrusion 13 in the mounting structure 1 is located inside the cylindrical groove 11 and one end is connected to the bottom of the cylindrical groove 11. The inner hole of the cylindrical protrusion 13 connects to the feed hole 12, allowing the gas-powder mixture entering through the feed hole 12 to also contact the outer peripheral wall of the cylindrical protrusion 13 to further promote mixing. The opening of the cylindrical groove 11 tapers radially. The distributor also includes a top cover structure 2 that connects to the mounting structure 1 and covers the opening of the cylindrical groove 11. The cylindrical portion 21 of the top cover structure 2 extends into the inner hole of the cylindrical protrusion 13 and is spaced apart from the cylindrical protrusion 13. There is a space between the outer peripheral wall of the cylindrical portion 21 and the inner peripheral wall of the cylindrical protrusion 13. Multiple discharge holes 22 are spaced apart and connected to one end of the inner hole of the cylindrical portion 21. During the continuous entry of air and powder into the cylindrical groove 11, the air and powder have... The tendency of the air-powder to move towards the discharge port 22 allows it to move and gather towards the opening of the cylindrical groove 11, then enter the inner hole of the cylindrical protrusion 13, and mix between the inner peripheral wall of the cylindrical protrusion 13 and the outer peripheral wall of the cylindrical part 21. After mixing, it enters the inner hole of the cylindrical part 21 from the inner hole of the cylindrical protrusion 13 and flows out from multiple discharge ports 22. The arrangement of the cylindrical protrusion 13 and the cylindrical part 21 is equivalent to increasing the path of the air-powder in the distributor, allowing the air-powder more time to mix evenly. The gas and powder entering the distributor have a relatively long path and will collide with the side wall of the cylindrical groove 11, the cylindrical protrusion 13, and the cylindrical part 21 to promote gas-powder mixing. All of these can improve the uniformity of gas-powder mixing. The uniformly mixed gas and powder finally enter the spray gun and other equipment through multiple discharge holes 22 to enter the molten pool. The better mixing effect between the uniformly mixed gas and powder and the molten pool can improve the quality of the final steel and solve the technical problem of the unsatisfactory quality of the obtained steel to a certain extent.

[0043] It should be noted that the cylindrical protrusion 13 is located within the cylindrical groove 11, meaning that the cylindrical protrusion 13 is situated within the space formed by the cylindrical groove 11. The inner hole of the cylindrical protrusion 13 connects to the feed hole 12; essentially, the inner hole of the cylindrical protrusion 13 connects to the cylindrical groove 11 and then to the feed hole 12, which is connected to the cylindrical groove 11. The inner hole is a hole formed by the inner circumferential wall of a cylindrical structure or component.

[0044] Figure 2 A cross-sectional view of a top cover structure in some or all embodiments of this application is shown, with reference to... Figure 1 , 2 In some or more embodiments, a plurality of discharge holes 22 are evenly spaced along the circumference of the cylindrical portion 21 and are all connected to one end of the inner hole of the cylindrical portion 21.

[0045] Multiple discharge holes 22 are evenly spaced along the circumference of the cylindrical portion 21 and are all connected to one end of the inner hole of the cylindrical portion 21. This allows the gas powder entering the inner hole of the cylindrical portion 21 from the inner hole of the cylindrical protrusion 13 to enter the multiple discharge holes 22 more evenly, and then enter the molten pool more evenly from the multiple discharge holes 22. This also helps to improve the mixing effect of gas powder and molten pool, thereby improving the quality of the final steel.

[0046] In some or more embodiments, the top cover structure 2 further includes:

[0047] The dividing part 23 is connected to the inner peripheral wall of the cylindrical part 21 and forms a plurality of through holes 231 between it and the inner peripheral wall of the cylindrical part 21. The plurality of through holes 231 are spaced apart along the circumference of the cylindrical part 21, and each through hole 231 is disposed opposite to a discharge hole 22.

[0048] Before the gas powder enters the discharge hole 22, the multiple through holes 231 of the dividing section 23 can divide the gas powder and reduce the possible rotation tendency of the gas powder. To a certain extent, it can guide the gas powder, so that the uniformly mixed gas powder can enter the corresponding discharge hole 22 more stably. The uniformly mixed gas powder can make stable contact with the molten pool, improve the mixing effect with the molten pool, and improve the quality of the final steel.

[0049] In some or more embodiments, the dividing part 23 may be a centrally radiating structure such as a star shape or a cross shape, and the center is located on the axis of the cylindrical part 21. The outer periphery of the dividing part 23 is connected to the inner peripheral wall of the cylindrical part 21, and a through hole 231 corresponding to the discharge hole 22 is formed between the dividing part 23 and the inner peripheral wall of the cylindrical part 21.

[0050] In some or more embodiments, the dividing portion 23 may also be configured as a cylindrical structure, for example, with its outer peripheral wall coaxially connected to the inner peripheral wall of the cylindrical portion 21. The cylindrical structure may be provided with a plurality of through holes 231 that are one-to-one with the discharge holes 22. All of these can achieve the function of cutting and guiding the gas powder.

[0051] It should be noted that the coaxiality involved in this application refers to the coincidence of the axes of two related components or parts.

[0052] In some or more embodiments, the multiple discharge holes 22 may also be distributed circumferentially along the cylindrical portion 21, and the spacing between two adjacent discharge holes 22 may be uneven.

[0053] In some or more embodiments, the top cover structure 2 includes:

[0054] The cover 24 is connected to the mounting structure 1 and covers the opening of the cylindrical groove 11. One end of the cylindrical part 21 is connected to the cover 24 and extends into the cylindrical groove 11. The discharge hole 22 is provided in the cover 24 and communicates with one end of the inner hole of the cylindrical part 21.

[0055] The flow guide 25 is connected to the cover 24 and a plurality of discharge holes 22 surround the flow guide 25.

[0056] The cover 24 connects to the mounting structure 1 and covers the slot. At the same time, the cover 24 provides support for the cylindrical part 21, so that the cylindrical part 21 can extend into the cylindrical protrusion 13 and be spaced apart from the cylindrical protrusion 13. The flow guide 25, which is a rotating structure, is connected to the cover 24, and multiple discharge holes 22 surround the flow guide 25. The flow guide 25 can promote the flow of gas and powder into the circumferential discharge holes 22 of the flow guide 25, promote the flow of gas and powder and promote the flow of gas and powder into the molten pool.

[0057] In some or more embodiments, the guide portion 25 may have a rotary structure, such as a cone or a frustum shape. The guide portion 25 may be coaxial with the cylindrical portion 21, and the end of the guide portion 25 with a smaller diameter may face the bottom of the cylindrical groove 11. This provides good flow guidance and also improves the uniformity of gas powder entering the molten pool.

[0058] In some or all embodiments, the cover 24 may be plate-shaped, block-shaped, or irregularly shaped. The cover 24 and the mounting structure 1 can be detachably connected by fasteners. The top cover structure 2 may also consist only of the cover 24, the cylindrical part 21 provided on the cover 24, and the discharge hole 22. This facilitates disassembly and maintenance and reduces the possibility of gas-powder blockage in the distributor affecting the bottom blowing of the converter.

[0059] In some embodiments, the cylindrical portion 21 and the cylindrical protrusion 13 are coaxial, the outer diameter of the cylindrical portion 21 is smaller than the inner diameter of the cylindrical protrusion 13, and the cylindrical portion 21 is spaced apart from the bottom of the groove. With this structure, a relatively uniform annular space can be formed between the cylindrical portion 21 and the cylindrical protrusion 13, allowing the air and powder to enter the annular space evenly and then into the inner hole of the cylindrical portion 21, which is spaced apart from the bottom of the groove.

[0060] In some embodiments, the axes of the cylindrical portion 21 and the cylindrical protrusion 13 may also be slightly offset. This also improves the uniformity of air-powder mixing.

[0061] In some or more embodiments, the cylindrical protrusion 13 is coaxial with and lower than the cylindrical groove 11, the outer diameter of the cylindrical protrusion 13 is smaller than the groove diameter of the cylindrical groove 11, and one end of the feed hole 12 is connected to the groove wall of the cylindrical groove 11 and is opposite to the cylindrical protrusion 13.

[0062] The inner hole of the cylindrical protrusion 13, which is lower than the cylindrical groove 11, is connected to the cylindrical groove 11. The outer diameter of the cylindrical protrusion 13 is smaller than the groove diameter of the cylindrical groove 11. The inner hole of the cylindrical protrusion 13 can be connected to the feed hole 12 through the cylindrical groove 11. One end of the feed hole 12 is connected to the groove wall of the cylindrical groove 11 and is opposite to the cylindrical protrusion 13. The gas and powder entering from the feed hole 12 have a longer mixing path, which can improve the mixing uniformity of the gas and powder, thereby improving the mixing degree between the gas and powder and the molten pool.

[0063] In some embodiments, the axis of the cylindrical protrusion 13 may be slightly offset from or at an angle to the axis of the cylindrical groove 11. The inner hole of the cylindrical protrusion 13 may also be connected to the feed hole 12.

[0064] In some or more embodiments, the feed hole 12 is located at the end of the cylindrical groove 11 away from the top cover structure 2. The gas and powder entering through the feed hole 12 can have a relatively long mixing path, and after being mixed more thoroughly, it moves to the end of the cylindrical protrusion 13 closer to the groove opening for further mixing.

[0065] In some or more embodiments, the mounting structure 1 is provided with two feed holes 12 on the sidewalls of the spaced-apart cylindrical groove 11, and the mounting structure 1 further includes:

[0066] A control valve (not shown in the figure) is connected to the mounting structure 1 and is used to control the opening and closing of a feed port 12.

[0067] The installation structure 1 includes two feed ports 12. One feed port 12 can be used to inject a mixture of oxygen and lime powder, while the other can be reserved for other gases. The incoming gas can be adjusted according to the needs of bottom blowing in the converter. One of the feed ports 12 is equipped with a control valve to control its own on / off state, which can improve the safety of the distributor.

[0068] Figure 3 A cross-sectional view of an installation structure in some or all embodiments of this application is shown, with reference to... Figures 1-3 Two feed holes 12 are connected to both sides of the cylindrical groove 11, and the axes of the two feed holes 12 extend in the same direction, while the openings of the two feed holes 12 face opposite directions. With this configuration, the gas and powder entering through the feed holes 12 can be mixed more thoroughly, and if both feed holes 12 are filled with gas or powder, the gas or powder entering through the two feed holes 12 can rotate in the same direction, promoting the mixing effect.

[0069] Figure 4 This application shows a schematic diagram of the structure of a main body and an annular portion in some or certain embodiments. Figure 5 This application shows a schematic diagram of the structure of a base in some or certain embodiments, with reference to... Figures 3-5 In some or more embodiments, the mounting structure 1 includes:

[0070] The main body 14 is cylindrical and has a feed hole 12 located on the main body 14. One end of the main body 14 is radially tapered and is detachably connected to the top cover structure 2.

[0071] The annular portion 15 has its outer peripheral wall connected to the inner peripheral wall of one end of the main body 14, and one end of the cylindrical portion 21 is connected to the annular portion 15.

[0072] The base 16 is detachably connected to the main body 14 and closes the inner hole of the annular portion 15. The base 16 and the annular portion 15 close the other end of the main body 14 to form a cylindrical groove 11.

[0073] In mounting structure 1, the annular portion 15 can be connected to the cylindrical protrusion 13 for installation. Together with the base 16, it can seal the other end of the main body 14, allowing the gas and powder entering the main body 14 to move and mix within the cylindrical groove 11. The base 16 and the annular portion 15 are detachably connected, allowing for separation of the base 16 and the annular portion 15, facilitating the disassembly and maintenance of the distributor and reducing the possibility of gas and powder blockage.

[0074] In some or more embodiments, the cylindrical portion 21 can be coaxially connected to one end of the annular portion 15, and the base 16 abuts against the end face of the annular portion 15 and is provided with a disc boss 161. The disc boss 161 is coaxially inserted into the inner hole of the cylindrical portion 21 and closes the inner hole of the annular portion 15. This facilitates positioning and disassembly.

[0075] In some or more embodiments, the main body 14 may include a first segment 141 and a second segment 142 coaxially connected. The first segment 141 is connected to the annular portion 15 and has a constant aperture. In the direction from the first segment 141 to the second segment 142, the aperture of the second segment 142 gradually decreases. The transition is smooth, and the second segment 142 can collect dust.

[0076] In some or more embodiments, the distributor may also include a discharge pipe 3 that communicates one-to-one with the discharge port 22. The uniform gas powder flowing out of the discharge port 22 can be transported to different equipment, etc.

[0077] In some embodiments, the axis of the air inlet may be perpendicular to the axis of the main body 14, and the air inlets are all located at the end where the main body 14 connects to the annular portion 15. The ratio of the diameter of the air inlet to the axial length of the first segment 141 is 0.25 to 0.40, and the ratio of the axial length of the first segment 141 to the axial length of the second segment 142 of the main body 14 is 0.35 to 0.55. The ratio of the diameter of the feed hole 12 to the diameter of the cylindrical protrusion 13 is 0.20 to 0.30, the ratio of the diameter of the cylindrical protrusion 13 to the axial length of the second segment 142 is 0.75 to 0.90, and the ratio of the diameter of the cylindrical portion 21 to the diameter of the cylindrical protrusion 13 is 0.50 to 0.65. The ratio of the axial thickness of the disc boss 161 to the distance between the disc boss 161 and the cylindrical portion 21 is 0.10 to 0.25. The ratio of the axial length of the cylindrical portion 21 to the axial length of the second section 142 is 0.60 to 0.75. The ratio of the axial length of the conical guide portion 25 to the axial length of the cylindrical portion 21 is 0.15 to 0.30. The ratio of the axial length of the guide portion 25 to the distance from the dividing portion 23 to the cover 24 is 0.60 to 0.75. The ratio of the maximum diameter of the guide portion 25 to the aperture of the cylindrical portion 21 is 0.35 to 0.55. The ratio of the cross-sectional area of ​​the feed hole 12 to the cross-sectional area of ​​the discharge hole 22 is 0.60 to 1.0. This significantly improves the uniformity of air-powder mixing.

[0078] In some or more embodiments, the diameter of the feed hole 12 may be 100-150 mm.

[0079] In some or more embodiments, with the distance between the feed port 12 and the discharge port 22 remaining constant, four discharge ports 22 are used as an example. In related technologies, the powder spraying speed of each discharge port 22 of the distributor varies considerably, and the flow rate fluctuation range of different pipes is about 20%. However, the powder spraying speed of each discharge port 22 of the distributor provided in this application is similar, and the flow rate fluctuation range of a single pipe is within 9%, indicating that the powder-air distribution uniformity of the distributor in this application is better. Specific results can be referred to in Table 1 below. For ease of understanding, different letters are used to distinguish different discharge ports 22 in Table 1, and the reference numerals for the discharge ports 22 are not shown in Table 1.

[0080] Table 1 Results of the distributor uniformity test

[0081]

[0082] It should be noted that the perpendicularity involved in this application, relative to absolute perpendicularity in geometry, is allowed to have a certain degree of error.

[0083] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0084] Furthermore, the technical solutions of the various embodiments can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0085] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A dispenser, characterized in that, include: The mounting structure includes a cylindrical groove, a feed hole, and a cylindrical protrusion. The opening of the cylindrical groove is radially narrowed. The feed hole is connected to the side wall of the cylindrical groove, and there is an angle between the axis of the feed hole and the axis of the cylindrical groove. The cylindrical protrusion is located inside the cylindrical groove and one end is connected to the bottom of the cylindrical groove. The inner hole of the cylindrical protrusion is connected to the feed hole. A top cover structure is connected to the mounting structure and covers the opening of the cylindrical groove. The top cover structure has a cylindrical part and multiple discharge holes. The cylindrical part extends into the inner hole of the cylindrical protrusion and is spaced apart from the cylindrical protrusion. The multiple discharge holes are spaced apart and communicate with one end of the inner hole of the cylindrical part.

2. The dispenser according to claim 1, characterized in that, The plurality of discharge holes are evenly spaced along the circumference of the cylindrical portion and are all connected to one end of the inner hole of the cylindrical portion.

3. The dispenser according to claim 2, characterized in that, The top cover structure also includes: The dividing section is connected to the inner peripheral wall of the cylindrical section and forms a plurality of through holes between the dividing section and the inner peripheral wall of the cylindrical section. The plurality of through holes are spaced apart along the circumference of the cylindrical section, and each through hole is disposed opposite to one of the discharge holes.

4. The dispenser according to claim 3, characterized in that, The top cover structure includes: The cover body connects to the mounting structure and covers the opening of the cylindrical groove. One end of the cylindrical part is connected to the cover body and extends into the cylindrical groove. The discharge hole is located on the cover body and communicates with one end of the inner hole of the cylindrical part. A flow guide is connected to the cover and a plurality of discharge holes surround the flow guide.

5. The dispenser according to any one of claims 1 to 4, characterized in that, The cylindrical portion is coaxial with the cylindrical protrusion, the outer diameter of the cylindrical portion is smaller than the inner diameter of the cylindrical protrusion, and the cylindrical portion is spaced apart from the bottom of the groove.

6. The dispenser according to any one of claims 1 to 4, characterized in that, The cylindrical protrusion is coaxial with the cylindrical groove and is lower than the cylindrical groove. The outer diameter of the cylindrical protrusion is smaller than the groove diameter of the cylindrical groove. One end of the feed hole is connected to the groove wall of the cylindrical groove and is opposite to the cylindrical protrusion.

7. The dispenser according to any one of claims 1 to 4, characterized in that, The feed hole is located at the end of the cylindrical groove away from the top cover structure.

8. The dispenser according to any one of claims 1 to 4, characterized in that, The mounting structure is provided with two feed holes that are spaced apart and communicate with the sidewalls of the cylindrical groove. The mounting structure also includes: A control valve, connected to the mounting structure and used to control the opening and closing of one of the feed holes.

9. The dispenser according to claim 8, characterized in that, The two feed holes are respectively connected to both sides of the cylindrical groove, the axes of the two feed holes extend in the same direction and the openings of the two feed holes face opposite directions.

10. The dispenser according to any one of claims 1 to 4, characterized in that, The mounting structure includes: The main body is cylindrical with a feed hole located on it. One end of the main body tapers radially and is detachably connected to the top cover structure. The annular portion has its outer peripheral wall connected to the inner peripheral wall of one end of the main body, and one end of the cylindrical portion is connected to the annular portion; The base is detachably connected to the main body and closes the inner hole of the annular portion. The base and the annular portion close the other end of the main body to form the cylindrical groove.

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