Submerged lance

Abstract

The utility model relates to the smelting and chemical industry technical field, concretely relates to a kind of submerged lance.The submerged lance includes gun seat, gun barrel, gun head and connecting assembly, one end of gun barrel is connected with gun seat, the other end of gun barrel is connected with the one end of gun head, so as to facilitate the other end of gun head to be inserted into reactor, connecting assembly includes connecting piece, positioning piece and sealing element, connecting piece is connected with the outer circumferential surface of gun seat, connecting piece is equipped with first connecting hole, the one end of positioning piece passes through first connecting hole and is connected with the outer wall of reactor, sealing element is sleeved on the outer circumferential of gun barrel, sealing element is abutted between gun seat and the outer wall of reactor to seal the gap between gun seat and the outer wall of reactor, and the size of sealing element on the axial direction of gun barrel is adjustable.The submerged lance of the utility model embodiment can flexibly adjust the depth of gun head inserted into reactor and improve the service life of gun head.

Description

Technical Field

[0001] This utility model relates to the field of metallurgy and chemical technology, specifically to an immersion spray gun. Background Technology

[0002] Submersible spray guns are widely used in pyrometallurgical processes, especially bottom-blown and side-blown smelting. During the smelting process, fuel or process gases are blown into the reactor through the spray gun to enhance mass and heat transfer.

[0003] However, in related technologies, the nozzle of the spray gun is immersed in the molten material with fluctuating high temperature for a long time, which makes the nozzle easily corroded and burned, affecting the service life of the nozzle. Utility Model Content

[0004] This invention aims to at least partially solve one of the technical problems in related technologies. To this end, embodiments of this invention provide an immersion spray gun that can improve the service life of the gun head.

[0005] The inventors discovered that the main reason for the reduced service life of the nozzle is that the depth to which the nozzle is inserted into the reactor is fixed. However, during the reactor reaction, both the nozzle and the refractory layer are dynamically consumed, and the consumption rates of the nozzle and the refractory layer are different. This causes the relative position between the nozzle and the refractory layer to gradually become unreasonable, which in turn leads to a significant reduction in the service life of the nozzle.

[0006] When the rate of refractory layer consumption is lower than the rate of consumption of the nozzle head, the nozzle head experiences significant wear (becomes shorter), while the refractory layer consumption is relatively low. This causes the nozzle head to retract too far into the refractory layer, and the fuel sprayed from the nozzle head will preferentially burn the surrounding refractory layer, accelerating its consumption. When the rate of refractory layer consumption is higher than the rate of consumption of the nozzle head (or when replacing the nozzle head), the refractory layer experiences significant wear (becomes thinner), while the nozzle head consumption is relatively low. This causes the nozzle head to protrude too far beyond the refractory layer, and the melt in the reactor will accelerate the damage to the nozzle head, thus significantly reducing its service life.

[0007] The immersion spray gun of this utility model embodiment includes: a gun base; a gun barrel and a gun head, one end of the gun barrel being connected to the gun base, and the other end of the gun barrel being connected to one end of the gun head so that the other end of the gun head extends into the reactor; a connecting assembly, the connecting assembly including a connector, a positioning member, and a sealing member, the connector being connected to the outer peripheral surface of the gun base, the connector having a first connecting hole, one end of the positioning member passing through the first connecting hole and connected to the outer wall of the reactor, the sealing member being sleeved on the outer periphery of the gun barrel, the sealing member abutting between the gun base and the outer wall of the reactor to seal the gap between the gun base and the outer wall of the reactor, and the dimension of the sealing member in the axial direction of the gun barrel being adjustable.

[0008] The immersion spray gun of this utility model has a connecting member on the outer circumference of the gun holder, a positioning member connecting the connecting member to the reactor, and a sealing member abutting between the gun holder and the outer wall of the reactor. By adjusting the size of the sealing member in the axial direction of the gun tube, the distance between the gun holder and the outer wall of the reactor can be adjusted. This allows for adjustment of the distance the gun head extends into the reactor under different working conditions. On the one hand, it achieves a reasonable relative position between the spray gun and the refractory layer, forming mutual protection and improving the service life of both the gun head and the refractory layer. On the other hand, it meets the requirements of different processes for spraying effect and spraying depth, thus improving the applicability of the spray gun.

[0009] In some embodiments, the positioning element includes a positioning stud and a positioning nut. The positioning stud passes through the first connecting hole and is connected to the outer wall of the reactor. The positioning nut is threadedly connected to the positioning stud and abuts against at least one side of the connecting element in the axial direction of the gun barrel.

[0010] In some embodiments, the connector is a connecting flange, there are at least two first connecting holes, the at least two first connecting holes are arranged at intervals in the circumferential direction of the connecting flange, there are at least two positioning elements, and the at least two positioning elements are configured to correspond one-to-one with the at least two first connecting holes.

[0011] In some embodiments, the gun head has at least one first nozzle and at least one second nozzle, the first nozzle and the second nozzle extending through the gun head along the axial direction of the gun barrel and spaced apart in the radial direction of the gun barrel, the first nozzle and the second nozzle being used to eject material.

[0012] In some embodiments, the first nozzle includes a plurality of first holes arranged at intervals in the circumferential direction of the nozzle head; and / or, the second nozzle includes a plurality of second holes arranged at intervals in the circumferential direction of the nozzle head.

[0013] In some embodiments, the gun head has a first connecting hole located between one end of the gun head and the other end of the gun head, the first connecting hole being disposed between two adjacent first holes to connect a plurality of first holes; and / or, the gun head has a second connecting hole located between one end of the gun head and the other end of the gun head, the second connecting hole being disposed between two adjacent second holes to connect a plurality of second holes.

[0014] In some embodiments, the first nozzle includes a central nozzle, which is coaxial with the central axis of the nozzle head.

[0015] In some embodiments, the immersion spray gun further includes a sealing member detachably connected to one end of the gun head adjacent to the gun barrel for sealing at least a portion of the first spray hole and / or at least a portion of the second spray hole.

[0016] In some embodiments, the barrel includes an inner tube and an outer tube, the inner tube having a first flow channel, the outer tube fitting around the outer periphery of the inner tube and having a gap between the outer tube and the inner tube to form a second flow channel between the inner tube and the outer tube, the gun mount having a first inlet and a second inlet, the first flow channel communicating with the first inlet and the first nozzle, and the second flow channel communicating with the second inlet and the second nozzle.

[0017] In some embodiments, the barrel is detachably and sealed to the gun mount, and the barrel is detachably and sealed to the gun head; and / or, both the outer peripheral surface of the barrel and the outer peripheral surface of the gun head are provided with grooves for accommodating the detection element. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of an immersion spray gun according to an embodiment of the present invention.

[0019] Figure 2 This is a schematic diagram of the gun mount according to an embodiment of the present invention.

[0020] Figure 3 This is a schematic diagram of the gun head according to an embodiment of the present invention.

[0021] Figure 4 This is a schematic diagram of the first and second connecting holes in an embodiment of the present invention.

[0022] Figure 5 This is a schematic diagram of the gun head according to another embodiment of the present invention.

[0023] Figure 6 This is a partial enlarged view of the barrel and gun head of an embodiment of this utility model.

[0024] Figure label:

[0025] Reactor 100, refractory layer 110,

[0026] Melt 200,

[0027] Gun mount 1, first inlet 11, second inlet 12, receiving cavity 13.

[0028] Barrel 2, inner tube 21, first flow channel 211, outer tube 22, second flow channel 23.

[0029] Gun head 3, first spray hole 31, center spray hole 311, second spray hole 32, first connecting hole 33, second connecting hole 34.

[0030] Connection component 4, connector 41, first connection hole 411, positioning component 42, positioning stud 421, positioning nut 422, sealing component 43, plugging component 5, detection component 6, sealing gasket 7. Detailed Implementation

[0031] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0032] The following is in conjunction with the appendix Figures 1-6 The immersion spray gun of this embodiment will be described in detail.

[0033] The immersion spray gun of this embodiment includes a gun base 1, a gun barrel 2, a gun head 3, and a connecting assembly 4. One end of the gun barrel 2 is connected to the gun base 1, and the other end of the gun barrel 2 is connected to one end of the gun head 3, so that the other end of the gun head 3 extends into the reactor 100. The connecting assembly 4 includes a connector 41, a positioning member 42, and a sealing member 43. The connector 41 is connected to the outer peripheral surface of the gun base 1 and has a first connecting hole 411. One end of the positioning member 42 passes through the first connecting hole 411 and is connected to the outer wall of the reactor 100. The sealing member 43 is sleeved on the outer periphery of the gun barrel 2 and abuts against the gap between the gun base 1 and the outer wall of the reactor 100 to seal the gap between the gun base 1 and the outer wall of the reactor 100. The axial dimension of the sealing member 43 is adjustable.

[0034] The immersion spray gun of this utility model has a connector 41 on the outer circumferential surface of the gun base 1, and a positioning member 42 connecting the connector 41 to the reactor 100. The sealing member 43 abuts between the gun base 1 and the outer wall of the reactor 100. By adjusting the size of the sealing member 43 in the axial direction of the gun barrel 2, the distance between the gun base 1 and the outer wall of the reactor 100 can be adjusted. This allows for adjustment of the distance the gun head 3 extends into the reactor 100 under different working conditions. On the one hand, this achieves a reasonable relative position between the spray gun and the refractory layer 110, forming mutual protection and improving the service life of both the gun head 3 and the refractory layer 110. On the other hand, it meets the requirements of different processes for spraying effect and spraying depth, thus improving the applicability of the spray gun.

[0035] Specifically, such as Figures 1-2 As shown, the axial direction of the barrel 2 is consistent with the left and right direction. The barrel 2 is located between the gun base 1 and the gun head 3. The left end of the barrel 2 is connected to the gun base 1, and the right end of the barrel 2 is connected to the left end of the gun head 3. The right end of the gun head 3 extends into the reactor 100.

[0036] The connector 41 is connected to the right outer peripheral surface of the gun holder 1. The connector 41 has a first connecting hole 411 that extends through the connector 41 in the left-right direction. The right end of the positioning member 42 passes through the first connecting hole 411 and connects to the outer wall of the reactor 100, thereby connecting the connector 41 to the reactor 100 and thus connecting the gun holder 1 to the reactor 100. By abutting the sealing member 43 between the right end face of the gun holder 1 and the outer wall of the reactor 100, the gap between the gun holder 1 and the outer wall of the reactor 100 is sealed. The positioning member 42 is used to adjust the relative position of the connector 41 on it to press the sealing member 43, preventing leakage and ensuring the normal operation of the spray gun while improving the connection stability between the gun holder 1 and the reactor 100.

[0037] Since the gun holder 1 is connected to the gun head 3 through the gun barrel 2, and the gun holder 1 is connected to the reactor 100 to fix the position of the gun head 3, by adjusting the size of the sealing member 43 in the left and right directions, and the sealing member 43 abutting between the gun holder 1 and the outer wall of the reactor 100, the gap distance between the gun holder 1 and the outer wall of the reactor 100 can be flexibly adjusted, thereby realizing the flexible adjustment of the depth of the gun head 3 extending into the reactor 100.

[0038] When the dimension of the seal 43 increases in the left-right direction, the gun holder 1 moves away from the reactor 100 (moves to the left), the distance between the gun holder 1 and the outer wall of the reactor 100 increases, and the distance the gun head 3 extends into the reactor 100 decreases. When the dimension of the seal 43 decreases in the left-right direction, the gun holder 1 moves closer to the reactor 100 (moves to the right), the distance between the gun holder 1 and the outer wall of the reactor 100 decreases, and the distance the gun head 3 extends into the reactor 100 increases.

[0039] The size of the seal 43 in the left and right direction can be adjusted by replacing the seal 43 with a seal 43 of different sizes, or by setting multiple seal 43s. The size of the seal 43 in the left and right direction can be adjusted by increasing or decreasing the number of seal 43s that abut against the gun seat 1 and the reactor 100.

[0040] It should be noted that the reactor 100 is used for the reaction of the melt 200 or internal high-temperature materials. The inner wall of the reactor 100 is provided with a refractory layer 110, which has a certain thickness. The reactor 100 has mounting holes so that the nozzle 3 can pass through the mounting holes and extend into the reactor 100, facilitating the spraying of materials into the reactor 100 by the spray gun. By adjusting the size of the sealing element 43 in the left and right directions, the distance of the nozzle 3 extending into the reactor 100 can be adjusted, avoiding excessive or insufficient extension of the nozzle 3, thereby improving the service life of the nozzle 3.

[0041] During the reaction process in reactor 100, the refractory layer 110 is also continuously worn down and thinned. Compared with related technologies, the replacement cycle of the refractory layer 110 is much longer than that of the spray gun. When replacing the spray gun without replacing the refractory layer 110, if the insertion depth cannot be adjusted, the nozzle 3 will protrude too far beyond the refractory layer 110, significantly increasing the consumption rate of the nozzle 3 and significantly reducing its service life. Due to the cumulative effect, the consumption rate of the newer nozzles is more obvious. In this embodiment, by gradually reducing the insertion depth of the nozzle 3 as the refractory layer 110 is worn down, it prevents the nozzle 3 from protruding too far and being eroded. On the other hand, the nozzle 3 sprays and pushes away the melt 200 around the refractory layer 110, reducing the erosion of the refractory layer 110 by the melt 200, thereby improving the service life of both the nozzle 3 and the refractory layer 110.

[0042] When replacing the refractory layer 110 without replacing the spray gun, if the spray gun insertion depth is not adjusted, the nozzle 3 will retract too far into the refractory layer 110, meaning the nozzle 3 will extend too short. This causes the fuel sprayed from the nozzle 3 to preferentially burn the refractory layer 110 around the nozzle 3, accelerating the wear and tear of the refractory layer 110. In this embodiment, by adjusting the nozzle 3 of the spray gun to the right, the insertion depth of the nozzle 3 is matched with the actual thickness of the refractory layer 110, thereby improving the service life of the nozzle 3 and the refractory layer 110.

[0043] In some embodiments, the positioning member 42 includes a positioning stud 421 and a positioning nut 422. The positioning stud 421 passes through the first connecting hole 411 and is connected to the outer wall of the reactor 100. The positioning nut 422 is threadedly connected to the positioning stud 421 and abuts against at least one side of the connecting member 41 in the axial direction of the barrel 2.

[0044] Specifically, such as Figure 1 and Figure 2 As shown, the positioning stud 421 extends in the left-right direction. The right end of the positioning stud 421 passes through the first connecting hole 411 and is connected to the outer wall of the reactor 100. The positioning nut 422 is threadedly connected to the positioning stud 421. By adjusting the position of the positioning nut 422 on the positioning stud 421 and the size of the sealing element 43 in the left-right direction, the gun holder 1 can be moved to the left or right, thereby adjusting the distance between the gun holder 1 and the reactor 100, and thus adjusting the distance of the gun head 3 extending into the reactor 100.

[0045] The positioning nut 422 abuts against at least one side of the connector 41 along the axial direction of the barrel 2. This can be understood as the positioning nut 422 abutting against the left side of the connector 41; or, the positioning nut 422 abutting against the right side of the connector 41; or, there are two positioning nuts 422, one abutting against the left side of the connector 41 and the other abutting against the right side of the connector 41. In this embodiment, there are two positioning nuts 422, one abutting against the left side of the connector 41 and the other abutting against the right side of the connector 41.

[0046] By using two positioning nuts 422 that are threadedly connected to positioning studs 421 and spaced apart in the left and right directions, the positioning nuts 422 on the left abut against the left side of the connector 41, and the positioning nuts 422 on the right abut against the right side of the connector 41, the positioning nuts 422 clamp the connector 41, preventing the gun holder 1 from moving to the left or right relative to the reactor 100, thus improving the connection between the gun holder 1 and the reactor 100.

[0047] Optionally, the positioning stud 421 is welded to the outer wall of the reactor 100 to improve the reliability of the connection between the positioning stud 421 and the reactor 100. At the same time, the positioning stud 421 can play a guiding role, making it easy for the gun holder 1 to move to the left or right on the positioning stud 421.

[0048] When it is found that the spray gun is damaged too quickly, it indicates that the spray gun has detached from the refractory layer 110. By rotating the positioning nut 422, the positioning nut 422 and the gun seat 1 are moved to the left. Then, the size of the sealing element 43 in the left and right direction is increased so that it abuts between the gun seat 1 and the reactor 100, so as to shorten the distance that the gun head 3 extends into the reactor 100, so that the gun head 3 returns to the protection range of the refractory layer 110 and improves the service life of the gun head 3.

[0049] If it is found that the nozzle 3 cannot reach the normal spraying position or the refractory is burned too quickly, first reduce the size of the seal 43 in the left and right directions, then rotate the positioning nut 422 to move the positioning nut 422 and the nozzle seat 1 to the right, so that the seal 43 is still abutting between the nozzle seat 1 and the reactor 100, increasing the distance that the nozzle 3 extends into the reactor 100, ensuring that the nozzle 3 sprays material normally, ensuring the reaction proceeds, or ensuring that the nozzle does not retract too deeply into the refractory layer 110 to prevent the refractory layer 110 from being burned after the material is sprayed out.

[0050] In some embodiments, such as Figure 1 and Figure 2As shown, the connector 41 is a connecting flange, and there are at least two first connecting holes 411, which are arranged at intervals in the circumferential direction of the connecting flange. There are at least two positioning elements 42, which are arranged in a one-to-one correspondence with the at least two first connecting holes 411. By setting the connector 41 as a connecting flange and setting multiple positioning elements 42, the reliability and convenience of the connection between the gun holder 1 and the reactor 100 are improved.

[0051] In some embodiments, the nozzle 3 has at least one first nozzle 31 and at least one second nozzle 32, which extend through the nozzle 3 along the axial direction of the nozzle 2 and are arranged at intervals in the radial direction of the nozzle 2. The first nozzle 31 and the second nozzle 32 are used to spray materials. The arrangement of at least one first nozzle 31 and at least one second nozzle 32 facilitates the delivery of different materials into the reactor 100 and enables stratified spraying of materials, thereby improving the reaction efficiency between the materials and the melt 200.

[0052] Specifically, such as Figures 3-5 As shown, the gun head 3 has at least one first nozzle 31 and at least one second nozzle 32. This can be understood as: either there is one first nozzle 31 and one second nozzle 32; or there are multiple first nozzles 31 and one second nozzle 32; or there is one first nozzle 31 and multiple second nozzles 32; or there are multiple first nozzles 31 and multiple second nozzles 32. When there are multiple first nozzles 31 and multiple second nozzles 32, the multiple first nozzles 31 are arranged at intervals in the radial direction of the gun barrel 2, and the multiple second nozzles 32 are arranged at intervals in the radial direction of the gun barrel 2, with all the multiple first nozzles 31 located inside the multiple second nozzles 32. This embodiment does not specifically limit the number of first nozzles 31 and second nozzles 32; the number is determined based on the type of material and the requirements of the spraying mode.

[0053] Optionally, the first nozzle 31 is used to spray out the first material, and the second nozzle 32 is used to spray out the second material. The first material can be the same as or different from the second material, so that the spray gun can spray out different materials.

[0054] For example, the first material and the second material can be gaseous materials, liquid materials (such as fuel oil), or solid materials (such as pulverized coal).

[0055] In some embodiments, such as Figures 3-4 As shown, the first nozzle 31 includes multiple first holes, which are spaced apart in the circumferential direction of the nozzle head 3. The spaced arrangement of the multiple first holes in the circumferential direction of the nozzle head 3 ensures that the first holes are evenly distributed on the nozzle head 3, improving the uniformity of material entering the reactor 100 and thus improving the reaction efficiency.

[0056] In some embodiments, such as Figures 3-4As shown, the second nozzle 32 includes multiple second holes, which are spaced apart circumferentially on the nozzle head 3. This spaced-apart arrangement of the second holes on the nozzle head 3 ensures a uniform distribution of the second holes, improving the uniformity of material entering the reactor 100 and thus increasing reaction efficiency.

[0057] Optionally, the cross-sectional shape of the first hole and the second hole can be in various forms such as circular, plum blossom, fan, square, etc. The cross-sectional shape of the first hole and the second hole is related to the state of the material being conveyed, whether it is solid, liquid or gaseous. When the material being conveyed is solid, a wear-resistant coating is provided on the inner wall surface of the first hole and the second hole to extend the service life of the gun head 3.

[0058] In some embodiments, the nozzle 3 has a first connecting hole 33, which is located between one end of the nozzle 3 and the other end of the nozzle 3. The first connecting hole 33 is provided between two adjacent first holes to connect multiple first holes. By providing the first connecting hole 33, communication between multiple first holes is achieved, which facilitates the mixing of materials in multiple first holes. Moreover, when the inlet end of some first holes is blocked (especially for solid materials) or blocked, the material in other first holes can still be uniformly sprayed out from the outlet end of multiple first holes, further improving the uniformity of the material.

[0059] Specifically, such as Figure 4 As shown, there are multiple first connecting holes 33, and multiple first connecting holes 411 are arranged at intervals in the circumferential direction of the gun head 3. The first connecting hole 33 is located between two adjacent first holes.

[0060] Optionally, the diameter of the first connecting hole 33 is smaller than the diameter of the first hole.

[0061] In some embodiments, the nozzle 3 has a second connecting hole 34, which is located between one end of the nozzle 3 and the other end of the nozzle 3. The second connecting hole 34 is provided between two adjacent second holes to connect multiple second holes. By providing the second connecting hole 34, communication between multiple second holes is achieved, which facilitates the mixing of materials in multiple second holes. Moreover, when the inlet end of some second holes is blocked or sealed, the material in other second holes can still be uniformly sprayed out from the outlet end of multiple second holes, further improving the uniformity of the material.

[0062] Specifically, such as Figure 4 As shown, there are multiple second connecting holes 34, which are arranged at intervals around the circumference of the gun head 3. The second connecting holes 34 are located between two adjacent second holes.

[0063] Optionally, the diameter of the second connecting hole 34 is smaller than the diameter of the second hole.

[0064] In some embodiments, such as Figure 5As shown, the first nozzle 31 includes a central nozzle 311, which is coaxial with the central axis of the nozzle head 3. The central nozzle 311 allows material to be ejected from the very center of the nozzle, increasing the flow area and improving material conveying efficiency.

[0065] Optionally, the first nozzle 31 may include a central nozzle 311 and a plurality of first holes, with the plurality of first holes surrounding the outside of the central nozzle 311 to further improve the spraying efficiency of the first material.

[0066] In some embodiments, the immersion spray gun further includes a sealing member 5, which is detachably connected to one end of the nozzle 3 adjacent to the barrel 2, for sealing at least a portion of the first nozzle 31 and / or at least a portion of the second nozzle 32.

[0067] Specifically, such as Figure 6 As shown, the sealing component 5 is detachably connected to the left side of the nozzle 3. The sealing component 5 is used to block the inlet end of the first nozzle 31 and / or the inlet end of the second nozzle 32. By installing or removing the sealing component 5, at least part of the first nozzle 31 and / or at least part of the second nozzle 32 can be blocked, thereby adjusting the flow area and resistance at the inlet end of the nozzle and optimizing the spraying effect.

[0068] The sealing element 5 can block only a portion of the first nozzle 31, for example, blocking part of the first nozzle, or blocking a portion of the flow area of ​​a single first nozzle. The sealing element 5 can also block only a portion of the second nozzle 32, for example, blocking part of the second nozzle, or blocking a portion of the flow area of ​​a single second nozzle. The sealing element 5 can also block at least a portion of the first nozzle 31 and at least a portion of the second nozzle 32, for example, blocking both part of the first nozzle and part of the second nozzle.

[0069] For example, when there are six first holes and six second holes, when blocking at least a portion of the first nozzle 31, two of the first holes can be blocked (i.e., the inlets of the two first holes are closed), or a portion of the flow area of ​​one of the first holes can be blocked (e.g., blocking 1 / 2 of the flow area of ​​the first hole while keeping the other 1 / 2 unobstructed), or a portion of the flow area of ​​each of the six first holes can be blocked simultaneously to adjust the flow area of ​​the first nozzle 31.

[0070] When blocking at least a portion of the second nozzle 32, two of the second nozzles can be blocked (i.e., the inlets of the two second nozzles are closed), or a portion of the flow area of ​​one of the second nozzles can be blocked (e.g., 1 / 2 of the flow area of ​​the second nozzle is blocked, while the other 1 / 2 remains unobstructed), or a portion of the flow area of ​​each of the six second nozzles can be blocked simultaneously to adjust the flow area of ​​the second nozzle 32.

[0071] Optionally, the sealing element 5 is a pluggable plug head, which is used to seal the nozzle. The flow area and resistance at the nozzle inlet are adjusted by the number of plug heads installed. For example, the sealing element 5 is an elastic sealing element 5, made of a flexible, compressible material. The elastic sealing element 5 enters the nozzle and deforms under the pressure of the inner wall of the nozzle to block and seal the nozzle. As another example, the sealing element 5 is a rigid sealing element 5, made of a hard material that matches the nozzle. The rigid sealing element 5 is detachably connected to the nozzle head 3 by means of threaded connection, snap-fit, etc., to achieve rigid filling of the nozzle to seal the nozzle inlet.

[0072] Optionally, the sealing component 5 is made of high-temperature and corrosion-resistant materials, such as ceramics or stainless steel.

[0073] In some embodiments, the barrel 2 includes an inner tube 21 and an outer tube 22. The inner tube 21 has a first flow channel 211, and the outer tube 22 fits around the outer periphery of the inner tube 21 and has a gap with the inner tube 21 to form a second flow channel 23 between the inner tube 21 and the outer tube 22. The gun base 1 has a first inlet 11 and a second inlet 12. The first flow channel 211 connects the first inlet 11 and the first nozzle 31, and the second flow channel 23 connects the second inlet 12 and the second nozzle 32. By setting the barrel 2 in the form of an inner tube 21 and an outer tube 22, the first flow channel 211 and the second flow channel 23 in the barrel 2 are arranged at intervals in the radial direction of the gun head 3 and are independent of each other, realizing the layered conveying of materials and facilitating the spraying of different materials.

[0074] Specifically, such as Figure 6 As shown, the gun holder 1 has a receiving cavity 13. The left end of the inner tube 21 passes through the receiving cavity 13 and is sealed to the left side of the gun holder 1 so that the first flow channel 211 is connected to the first inlet 11. The left end of the outer tube 22 is sealed to the right side of the gun holder 1 so that the second flow channel 23 is connected to the receiving cavity 13 and is connected to the second inlet 12 through the receiving cavity 13 to realize the conveying of the second material.

[0075] In other embodiments, there are multiple outer tubes 22. One of two adjacent outer tubes 22 is fitted around the outer periphery of the other outer tube 22 to form a flow channel between the two adjacent outer tubes 22. Correspondingly, the gun head 3 is provided with a nozzle corresponding to the flow channel, and the gun base 1 is provided with an inlet corresponding to the flow channel. For ease of description, we will use two outer tubes 22 as an example. The first outer tube 22 is fitted around the outer periphery of the inner tube 21 to form a second flow channel 23 between the inner tube 21 and the first outer tube 22. The second outer tube 22 is fitted around the outer periphery of the first outer tube 22 to form a third flow channel between the first outer tube 22 and the second outer tube 22. The gun head 3 is provided with a first spray hole 31, a second spray hole 32 and a third spray hole. The gun base 1 has a first inlet 11, a second inlet 12 and a third inlet. The first flow channel 211 connects the first inlet 11 and the first spray hole 31. The second flow channel 23 connects the second inlet 12 and the second spray hole 32. The third flow channel connects the third inlet and the third spray hole, so as to realize the spraying of three materials.

[0076] In some embodiments, such as Figure 6 As shown, the barrel 2 is detachably and sealed to the gun mount 1, and the barrel 2 is detachably and sealed to the gun head 3.

[0077] Compared to related technologies where the barrel 2 and the gun head 3 are integrated, or where the gun head 3, the gun seat, and the barrel 2 are integrated, the detachable connection between the barrel 2 and the gun seat 1, and the detachable connection between the barrel 2 and the gun head 3 in this embodiment, facilitates the replacement of worn gun heads 3 and / or barrel 2 without replacing the gun seat, reducing replacement costs. Alternatively, it allows for the matching of gun heads 3 and / or barrel 2 of different lengths to meet the requirements of different processes, or facilitates the disassembly and adjustment of the sealing components to change the inlet flow area and pressure of the gun head nozzle.

[0078] Optionally, the barrel 2 is threaded to the gun holder 1, and the barrel 2 is threaded to the gun head 3. This simplifies the structure of the gun holder 1, the barrel 2, and the gun head 3, and ensures high connection reliability. It also facilitates various combinations of the gun holder 1, the barrel 2, and the gun head 3. For example, different lengths of the barrel 2 can be replaced.

[0079] For example, the gun head 3 has an external thread, and the gun barrel 2 has an internal thread that matches the external thread of the gun head 3. When the gun head 3 is severely burned, only the gun head 3 needs to be replaced, reducing replacement costs.

[0080] Optionally, the barrel 2 includes multiple gun sections that are threaded together. The length of the barrel 2 can be adjusted by changing the number of gun sections.

[0081] Optionally, sealing gaskets 7 are provided between the barrel 2 and the gun base 1, and between the barrel 2 and the gun head 3, which helps to improve the sealing reliability between the barrel 2 and the gun base 1, and between the barrel 2 and the gun head 3.

[0082] In some embodiments, such as Figure 6 As shown, both the outer circumferential surface of the barrel 2 and the outer circumferential surface of the nozzle 3 are provided with grooves, which are used to accommodate the test piece 6. The thickness of the refractory layer 110 is determined by the corrosion length of the test piece 6, which facilitates the determination of the corrosion status of the refractory layer 110 and thus matches the appropriate relative position of the spray gun and the refractory.

[0083] Optionally, the detection element 6 is a metal probe wire.

[0084] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0085] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0086] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to 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.

[0087] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0088] In this utility model, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this utility model. 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. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0089] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. An immersion spray gun, characterized in that, include: Gun mount; A gun barrel and a gun head, one end of the gun barrel being connected to the gun base, and the other end of the gun barrel being connected to one end of the gun head, so that the other end of the gun head can extend into the reactor; A connecting assembly includes a connector, a positioning member, and a sealing member. The connector is connected to the outer peripheral surface of the gun holder. The connector has a first connecting hole. One end of the positioning member passes through the first connecting hole and is connected to the outer wall of the reactor. The sealing member is sleeved on the outer periphery of the gun barrel and abuts against the gun holder and the outer wall of the reactor to seal the gap between the gun holder and the outer wall of the reactor. The axial dimension of the sealing member is adjustable in the gun barrel.

2. The immersion spray gun according to claim 1, characterized in that, The positioning component includes a positioning stud and a positioning nut. The positioning stud passes through the first connecting hole and is connected to the outer wall of the reactor. The positioning nut is threadedly connected to the positioning stud and abuts against the connecting component on at least one side of the barrel in the axial direction.

3. The immersion spray gun according to claim 2, characterized in that, The connector is a connecting flange, and there are at least two first connecting holes. The at least two first connecting holes are arranged at intervals in the circumferential direction of the connecting flange. There are at least two positioning elements, and the at least two positioning elements are arranged in a one-to-one correspondence with the at least two first connecting holes.

4. The immersion spray gun according to claim 1, characterized in that, The gun head has at least one first nozzle and at least one second nozzle, the first nozzle and the second nozzle extending through the gun head along the axial direction of the gun barrel and spaced apart in the radial direction of the gun barrel, the first nozzle and the second nozzle being used to eject material.

5. The immersion spray gun according to claim 4, characterized in that, The first nozzle includes a plurality of first holes, which are spaced apart in the circumferential direction of the nozzle head; and / or, The second nozzle includes a plurality of second holes, which are arranged at intervals in the circumferential direction of the nozzle head.

6. The immersion spray gun according to claim 5, characterized in that, The gun head has a first connecting hole, which is located between one end of the gun head and the other end of the gun head. The first connecting hole is provided between two adjacent first holes to connect multiple first holes. And / or, The gun head has a second connecting hole, which is located between one end of the gun head and the other end of the gun head. The second connecting hole is provided between two adjacent second holes to connect multiple second holes.

7. The immersion spray gun according to claim 4, characterized in that, The first nozzle includes a central nozzle, which is coaxial with the central axis of the gun head.

8. The immersion spray gun according to claim 4, characterized in that, It also includes a sealing element, which is detachably connected to one end of the gun head adjacent to the barrel, for sealing at least a portion of the first nozzle and / or at least a portion of the second nozzle.

9. The immersion spray gun according to claim 4, characterized in that, The gun barrel includes an inner tube and an outer tube. The inner tube has a first flow channel. The outer tube fits around the outer periphery of the inner tube and has a gap with the inner tube to form a second flow channel between the inner tube and the outer tube. The gun base has a first inlet and a second inlet. The first flow channel connects the first inlet and the first nozzle, and the second flow channel connects the second inlet and the second nozzle.

10. The immersion spray gun according to any one of claims 1-9, characterized in that, The barrel is detachably and sealingly connected to the gun mount, and the barrel is detachably and sealingly connected to the gun head; and / or, The outer circumferential surface of the barrel and the outer circumferential surface of the gun head are both provided with grooves, which are used to accommodate the test piece.

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