Immersed spray gun

Abstract

The invention relates to the technical field of smelting and chemical engineering, in particular to an immersed spray gun. The immersed spray gun comprises a gun base, a gun barrel, a gun head and a connecting assembly, one end of the gun barrel is connected with the gun base, the other end of the gun barrel is connected with one end of the gun head so that the other end of the gun head can stretch into the reactor, the connecting assembly comprises a connecting piece, a positioning piece and a sealing piece, the connecting piece is connected with the peripheral face of the gun base, and the connecting piece is provided with a first connecting hole; one end of the positioning piece penetrates through the first connecting hole to be connected with the outer wall of the reactor, the sealing piece is arranged on the periphery of the gun barrel in a sleeving mode, the sealing piece is connected between the gun base and the outer wall of the reactor in an abutting mode so as to seal a gap between the gun base and the outer wall of the reactor, and the size of the sealing piece in the axial direction of the gun barrel is adjustable. According to the immersed spray gun, the depth of the gun head inserted into a reactor can be flexibly adjusted, and the service life of the gun head is prolonged.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of smelting and chemical industry, in particular to a submerged lance. BACKGROUND

[0002] The submerged lance is widely used in pyrometallurgy, especially in bottom blowing and side blowing smelting. In the smelting process, fuel or process gas is blown into the reactor through the lance for reaction, thereby strengthening the mass and heat transfer effect.

[0003] However, in the related art, the lance head is immersed in the high-temperature fluctuating melt for a long time, which easily causes the lance head to be eroded and burned, thereby affecting the service life of the lance head. SUMMARY

[0004] The present application aims to at least partially solve one of the technical problems in the related art. To this end, the embodiments of the present application propose a submerged lance, which can improve the service life of the lance head.

[0005] The inventors have found that the main reason for the reduced service life of the lance head is that the depth of the lance inserted into the reactor is fixed, while the lance head and the refractory layer are dynamically consumed during the reaction in the reactor, and the consumption rates of the lance head and the refractory layer are different, which causes the relative position between the lance head and the refractory layer to gradually become unreasonable, thereby significantly reducing the service life of the lance head.

[0006] When the consumption rate of the refractory layer is lower than that of the lance head, the lance head is significantly consumed (the lance head becomes shorter), while the refractory layer is less consumed, which causes the lance head to retract into the refractory layer too much, and the fuel sprayed by the lance head burns the surrounding refractory layer first, thereby aggravating the consumption of the refractory layer. When the consumption rate of the refractory layer is higher than that of the lance head (or when a new lance head is replaced), the refractory layer is significantly consumed (the refractory layer becomes thinner), while the lance head is less consumed, which causes the lance head to protrude out of the refractory layer too much, and the melt in the reactor accelerates the damage of the lance head, thereby significantly reducing the service life of the lance head.

[0007] The submerged lance of the embodiments of the present application comprises a lance seat, a lance pipe and a lance head, one end of the lance pipe is connected to the lance seat, the other end of the lance pipe is connected to one end of the lance head, so that the other end of the lance head protrudes into the reactor, a connecting assembly comprising a connecting piece, a positioning piece and a sealing piece, the connecting piece is connected to the outer circumferential surface of the lance seat, the connecting piece is provided with a first connecting hole, one end of the positioning piece penetrates through the first connecting hole and is connected to the outer wall of the reactor, the sealing piece is sleeved on the outer circumference of the lance pipe, the sealing piece abuts between the lance seat and the outer wall of the reactor to seal the gap between the lance seat and the outer wall of the reactor, and the size of the sealing piece in the axial direction of the lance pipe is adjustable.

[0008] The submerged lance of the embodiment of the present application is provided with a connecting piece on the outer circumferential surface of the lance base, the connecting piece is connected with the reactor by the positioning piece, and the sealing piece is abutted between the lance base and the outer wall of the reactor. By adjusting the size of the sealing piece in the axial direction of the lance pipe, the distance between the lance base and the outer wall of the reactor is adjusted, and then the distance of the lance head extending into the reactor is adjusted under different working conditions. On the one hand, the relative position of the lance and the refractory layer is reasonable, mutual protection is formed, and the service life of the lance head and the refractory layer is improved. On the other hand, the requirements of different processes on the blowing effect and the blowing depth are met, and the applicability of the lance is improved.

[0009] In some embodiments, the positioning piece includes a positioning stud and a positioning nut, the positioning stud is connected with the outer wall of the reactor through the first connecting hole, and the positioning nut is threadedly connected with the positioning stud and abuts against at least one side of the connecting piece in the axial direction of the lance pipe.

[0010] In some embodiments, the connecting piece is a connecting flange, the first connecting hole is at least two, the at least two first connecting holes are arranged at intervals in the circumferential direction of the connecting flange, and the positioning piece is at least two, the at least two positioning pieces are arranged one by one corresponding to the at least two first connecting holes.

[0011] In some embodiments, the lance head has at least one first spray hole and at least one second spray hole, the at least one first spray hole and the at least one second spray hole penetrate the lance head in the axial direction of the lance pipe and are arranged at intervals in the radial direction of the lance pipe, and the first spray hole and the second spray hole are used for spraying the material.

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

[0013] In some embodiments, the lance head has a first communication hole between one end of the lance head and the other end of the lance head, and the first communication hole is arranged between adjacent two first holes to communicate the plurality of first holes; and / or, the lance head has a second communication hole between one end of the lance head and the other end of the lance head, and the second communication hole is arranged between adjacent two second holes to communicate the plurality of second holes.

[0014] In some embodiments, the first spray hole includes a center spray hole, and the center spray hole is coaxial with the central axis of the lance head.

[0015] In some embodiments, the submerged lance further comprises a blocking member detachably connected to the lance head adjacent to one end of the lance pipe for blocking at least part of the first spray hole and / or at least part of the second spray hole.

[0016] In some embodiments, the lance pipe comprises an inner pipe having a first flow passage and an outer pipe fitted on the outer periphery of the inner pipe with a gap between the inner pipe and the outer pipe to form a second flow passage between the inner pipe and the outer pipe, the lance base has a first inlet and a second inlet, the first flow passage communicates the first inlet and the first spray hole, and the second flow passage communicates the second inlet and the second spray hole.

[0017] In some embodiments, the lance pipe is detachably and sealingly connected to the lance base, the lance pipe is detachably and sealingly connected to the lance head; and / or, the outer periphery of the lance pipe and the outer periphery of the lance head are each provided with a recess for accommodating a detecting member. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a schematic view of a submerged lance according to an embodiment of the present application.

[0019] Figure 2 is a schematic view of a lance base according to an embodiment of the present application.

[0020] Figure 3 is a schematic view of a lance head according to an embodiment of the present application.

[0021] Figure 4 is a schematic view of a first communication hole and a second communication hole according to an embodiment of the present application.

[0022] Figure 5 is a schematic view of a lance head according to another embodiment of the present application.

[0023] Figure 6 is a partial enlarged view of a lance pipe and a lance head according to an embodiment of the present application.

[0024] REFERENCE NUMERALS:

[0025] reactor 100, refractory layer 110,

[0026] melt 200,

[0027] lance base 1, first inlet 11, second inlet 12, accommodating cavity 13,

[0028] lance pipe 2, inner pipe 21, first flow passage 211, outer pipe 22, second flow passage 23,

[0029] lance head 3, first spray hole 31, central spray hole 311, second spray hole 32, first communication hole 33, second communication 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] Embodiments of the present invention are described in detail below, examples of which are illustrated 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 invention has a connector 41 on the outer circumferential surface of the gun holder 1, and a positioning member 42 connecting the connector 41 to the reactor 100. The sealing member 43 abuts against the outer wall of the gun holder 1 and 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 holder 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, 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 connecting piece 41 is connected with the right outer circumferential surface of the gun seat 1, and the connecting piece 41 is provided with a first connecting hole 411 penetrating the connecting piece 41 in the left-right direction, and the right end of the positioning piece 42 penetrates the first connecting hole 411 and is connected with the outer wall of the reactor 100, so as to realize the connection between the connecting piece 41 and the reactor 100, and further realize the connection between the gun seat 1 and the reactor 100. By abutting the sealing piece 43 between the right end surface of the gun seat 1 and the outer wall of the reactor 100, the gap between the gun seat 1 and the outer wall of the reactor 100 is sealed, and the relative position of the connecting piece 41 thereon is adjusted by the positioning piece 42 to compress the sealing piece 43, prevent leakage, ensure the normal work of the spray gun, and improve the connection stability between the gun seat 1 and the reactor 100.

[0037] Since the gun seat 1 is connected with the gun barrel 2 and the gun head 3, the gun seat 1 is connected with the reactor 100 to fix the position of the gun head 3, and by adjusting the size of the sealing piece 43 in the left-right direction and abutting the sealing piece 43 between the gun seat 1 and the outer wall of the reactor 100, the interval distance between the gun seat 1 and the outer wall of the reactor 100 is flexibly adjusted, and further the depth of the gun head 3 extending into the reactor 100 is flexibly adjusted.

[0038] When the size of the sealing piece 43 in the left-right direction increases, the gun seat 1 moves towards the direction away from the reactor 100 (moves to the left), the interval distance between the gun seat 1 and the outer wall of the reactor 100 increases, and the distance of the gun head 3 extending into the reactor 100 shortens. When the size of the sealing piece 43 in the left-right direction decreases, the gun seat 1 moves towards the direction close to the reactor 100 (moves to the right), the interval distance between the gun seat 1 and the outer wall of the reactor 100 decreases, and the distance of the gun head 3 extending into the reactor 100 increases.

[0039] The size adjustment of the sealing piece 43 in the left-right direction can be achieved by replacing the sealing piece 43 with different sizes, or by providing multiple sealing pieces 43, and by increasing or decreasing the number of the sealing pieces 43 abutting between the gun seat 1 and the reactor 100, so as to realize the size adjustment of the sealing piece 43 in the left-right direction.

[0040] It should be noted that the reactor 100 is used for the reaction of the melt 200 or the internal high-temperature material, the inner wall of the reactor 100 is provided with a refractory layer 110 with a certain thickness, and the reactor 100 has a mounting hole so that the gun head 3 extends into the reactor 100 through the mounting hole, and the spray gun sprays the material into the reactor 100. By adjusting the size of the sealing piece 43 in the left-right direction, the distance of the gun head 3 extending into the reactor 100 is adjusted, so as to avoid the gun head 3 extending too long or too short, and further improve the service life of the gun head 3.

[0041] The refractory layer 110 is also continuously worn and thinned during the reaction of the reactor 100. Compared with the replacement cycle of the refractory layer 110 in the prior art, the replacement cycle of the gun is much longer. When the new gun is replaced without replacing the refractory layer 110, if the insertion depth cannot be adjusted, the gun head 3 will protrude too much from the refractory layer 110, the consumption speed of the gun head 3 will be greatly increased, and the service life will be obviously reduced. Due to the superposition effect, the more new guns replaced at the back, the more obvious the consumption speed will be. In the embodiment, the insertion depth of the gun head 3 of the gun is gradually reduced as the refractory layer 110 is worn and thinned. On the one hand, the gun head 3 is prevented from protruding too much and being eroded, and on the other hand, the refractory layer 110 around the gun head 3 is blown away by the gun head 3, reducing the erosion of the refractory layer 110 by the melt 200 and improving the service life of the gun head 3 and the refractory layer 110.

[0042] When the refractory layer 110 is replaced without replacing the new gun, if the insertion depth of the gun is not adjusted, the gun head 3 will be retracted too much from the refractory layer 110, that is, the gun head 3 will protrude too short, causing the fuel sprayed by the gun head 3 to preferentially burn the refractory layer 110 around the gun head 3, and aggravate the wear of the refractory layer 110. In the embodiment, the gun head 3 of the gun is adjusted to the right, so that the insertion depth of the gun head 3 matches the actual thickness of the refractory layer 110, improving the service life of the gun head 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 with 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, as shown in Figure 1 and Figure 2 , 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 with the positioning stud 421. By adjusting the position of the positioning nut 422 on the positioning stud 421 and the size of the sealing member 43 in the left-right direction, the barrel seat 1 is facilitated to move to the left or to the right, the distance between the barrel seat 1 and the reactor 100 is adjusted, and the distance of the gun head 3 inserted into the reactor 100 is adjusted.

[0045] The positioning nut 422 abuts against the connecting piece 41 on at least one side in the axial direction of the barrel 2. It can be understood that the positioning nut 422 abuts against the left side of the connecting piece 41, or the positioning nut 422 abuts against the right side of the connecting piece 41, or there are two positioning nuts 422, one of which abuts against the left side of the connecting piece 41 and the other of which abuts against the right side of the connecting piece 41. In the embodiment, there are two positioning nuts 422, one of which abuts against the left side of the connecting piece 41 and the other of which abuts against the right side of the connecting piece 41.

[0046] By threadedly connecting the two positioning nuts 422 to the positioning stud 421 and spacing them in the left-right direction, the left positioning nut 422 abuts against the left side of the connecting piece 41 and the right positioning nut 422 abuts against the right side of the connecting piece 41, so that the positioning nut 422 clamps the connecting piece 41, avoids the movement of the gun stand 1 relative to the reactor 100 to the left or to the right, and improves the connection firmness of the gun stand 1 and the reactor 100.

[0047] Alternatively, the positioning stud 421 is welded to the outer wall of the reactor 100, which improves the connection reliability of the positioning stud 421 and the reactor 100, and the positioning stud 421 can also serve as a guide to facilitate the movement of the gun stand 1 to the left or to the right on the positioning stud 421.

[0048] When it is found that the spray gun is damaged too fast, it indicates that the spray gun has been separated from the refractory layer 110. By rotating the positioning nut 422, the positioning nut 422 and the gun stand 1 are moved to the left, and the size of the sealing element 43 in the left-right direction is increased to abut between the gun stand 1 and the reactor 100, so as to shorten the distance of the gun head 3 extending into the reactor 100, so that the gun head 3 returns to the protection range of the refractory layer 110, and the service life of the gun head 3 is improved.

[0049] When it is found that the gun head 3 cannot reach the normal spraying position or the refractory is burned too fast, the size of the sealing element 43 in the left-right direction is first reduced, and then the positioning nut 422 is rotated to move the positioning nut 422 and the gun stand 1 to the right, so that the sealing element 43 still abuts between the gun stand 1 and the reactor 100, the distance of the gun head 3 extending into the reactor 100 is increased, the gun head 3 is ensured to normally spray the material, the reaction is ensured to proceed, or the gun head is ensured not to be too deep into the refractory layer 110 to prevent the material from burning the refractory layer 110 after being sprayed out.

[0050] In some embodiments, as Figure 1 and Figure 2As shown, the connecting piece 41 is a connecting flange, the first connecting holes 411 are at least two, the at least two first connecting holes 411 are arranged at intervals in the circumferential direction of the connecting flange, and the positioning pieces 42 are at least two, the at least two positioning pieces 42 are arranged one by one with the at least two first connecting holes 411. By setting the connecting piece 41 as a connecting flange and the positioning piece 42 as multiple, the connection reliability and convenience between the gun seat 1 and the reactor 100 are improved.

[0051] In some embodiments, the gun head 3 has at least one first spray hole 31 and at least one second spray hole 32, the at least one first spray hole 31 and the at least one second spray hole 32 penetrate the gun head 3 in the axial direction of the gun barrel 2 and are arranged at intervals in the radial direction of the gun barrel 2, and the first spray hole 31 and the second spray hole 32 are used to spray the material. By providing the at least one first spray hole 31 and the at least one second spray hole 32, it is convenient to deliver different materials into the reactor 100, and the layered injection of the material can be realized, thereby improving the reaction efficiency of the material and the melt 200.

[0052] Specifically, as shown in Figures 3-5 The gun head 3 has at least one first spray hole 31 and at least one second spray hole 32, which can be understood as: the first spray hole 31 and the second spray hole 32 are both one; or the first spray hole 31 is multiple and the second spray hole 32 is one; or the first spray hole 31 is one and the second spray hole 32 is multiple; or the first spray hole 31 and the second spray hole 32 are both multiple. When the first spray hole 31 and the second spray hole 32 are both multiple, the multiple first spray holes 31 are arranged at intervals in the radial direction of the gun barrel 2, the multiple second spray holes 32 are arranged at intervals in the radial direction of the gun barrel 2, and the multiple first spray holes 31 are all located on the inner side of the multiple second spray holes 32. This embodiment does not specifically limit the number of first spray holes 31 and second spray holes 32, and the number is determined according to the type of material and the demand of the injection mode.

[0053] Optionally, the first spray hole 31 is used to spray the first material, and the second spray hole 32 is used to spray the second material, and the first material can be the same as or different from the second material, so as to facilitate the lance to spray different materials.

[0054] For example, the first material and the second material can be gas material, liquid material (such as fuel oil), and solid material (such as coal powder).

[0055] In some embodiments, as shown in Figures 3-4 The first spray hole 31 includes multiple first holes, and the multiple first holes are arranged at intervals in the circumferential direction of the gun head 3. The multiple first holes arranged at intervals in the circumferential direction of the gun head 3 are uniformly distributed on the gun head 3, which improves the uniformity of the material entering the reactor 100, thereby improving the reaction efficiency.

[0056] In some embodiments, as shown in Figures 3-4As shown, the second nozzle hole 32 comprises a plurality of second holes which are arranged at intervals in the circumference of the lance head 3. The plurality of second holes are arranged at intervals in the circumference of the lance head 3, so that the second holes are uniformly distributed on the lance head 3, improving the uniformity of the material into the reactor 100, and further improving the reaction efficiency.

[0057] Alternatively, the cross-sectional shape of the first hole and the second hole can be circular, quincunx, sector, square, etc., and the cross-sectional shape of the first hole and the second hole is related to the state of the material being transported, which is solid, liquid or gaseous. When the material being transported is solid, a wear-resistant coating is provided on the inner wall surface of the first hole and the second hole to prolong the service life of the lance head 3.

[0058] In some embodiments, the lance head 3 has a first communication hole 33 which is located between one end of the lance head 3 and the other end of the lance head 3, and the first communication hole 33 is arranged between adjacent two first holes to communicate the plurality of first holes. By arranging the first communication hole 33, the communication between the plurality of first holes is realized, which facilitates the mixing of the materials in the plurality of first holes, and when the inlet end of part of the first holes is blocked (especially solid material) or sealed, the materials in another part of the first holes can still be uniformly sprayed out of the outlet end of the plurality of first holes, further improving the uniformity of the materials.

[0059] Specifically, as shown in Figure 4 The first communication hole 33 is a plurality of first connection holes 411 which are arranged at intervals in the circumference of the lance head 3, and the first communication hole 33 is arranged between adjacent two first holes.

[0060] Alternatively, the diameter of the first communication hole 33 is smaller than the diameter of the first hole.

[0061] In some embodiments, the lance head 3 has a second communication hole 34 which is located between one end of the lance head 3 and the other end of the lance head 3, and the second communication hole 34 is arranged between adjacent two second holes to communicate the plurality of second holes. By arranging the second communication hole 34, the communication between the plurality of second holes is realized, which facilitates the mixing of the materials in the plurality of second holes, and when the inlet end of part of the second holes is blocked or sealed, the materials in another part of the second holes can still be uniformly sprayed out of the outlet end of the plurality of second holes, further improving the uniformity of the materials.

[0062] Specifically, as shown in Figure 4 The second communication hole 34 is a plurality of second connection holes which are arranged at intervals in the circumference of the lance head 3, and the second communication hole 34 is arranged between adjacent two second holes.

[0063] Alternatively, the diameter of the second communication hole 34 is smaller than the diameter of the second hole.

[0064] In some embodiments, as shown in 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 plugging member 5 is a pluggable plug head, which plugs the jet hole, and the number of the installed plug heads adjusts the flow area and resistance of the inlet end of the jet hole. For example, the plugging member 5 is an elastic plugging member 5, which is made of flexible and compressible material, and the elastic plugging member 5 enters the jet hole and deforms under the extrusion of the inner wall of the jet hole to plug the jet hole. For another example, the plugging member 5 is a rigid plugging member 5, which is made of hard material matched with the jet hole, and the rigid plugging member 5 is detachably connected with the gun head 3 by thread connection, clamping or other ways to rigidly fill the jet hole and plug the inlet end of the jet hole.

[0072] Optionally, the plugging member 5 is made of high-temperature-resistant and corrosion-resistant material, such as ceramic, stainless steel, etc.

[0073] In some embodiments, the gun barrel 2 includes an inner tube 21 having a first flow passage 211 and an outer tube 22 fitted on the outer periphery of the inner tube 21 with a gap between the inner tube 21 and the outer tube 22 to form a second flow passage 23 between the inner tube 21 and the outer tube 22, and the gun seat 1 has a first inlet 11 and a second inlet 12, the first flow passage 211 communicates the first inlet 11 and the first jet hole 31, and the second flow passage 23 communicates the second inlet 12 and the second jet hole 32. By arranging the gun barrel 2 in the form of the inner tube 21 and the outer tube 22, the first flow passage 211 and the second flow passage 23 in the gun barrel 2 are arranged in the radial direction of the gun head 3 and independent of each other, which realizes the layered delivery of the materials and facilitates the jetting of different materials.

[0074] Specifically, as shown in Figure 6 the gun seat 1 has a receiving cavity 13, the left end of the inner tube 21 penetrates through the receiving cavity 13 and is sealingly connected with the left side of the gun seat 1, so that the first flow passage 211 communicates the first inlet 11; the left end of the outer tube 22 is sealingly connected with the right side of the gun seat 1, so that the second flow passage 23 communicates the receiving cavity 13 and the second inlet 12 through the receiving cavity 13 to realize the delivery of the second material.

[0075] In other embodiments, the number of outer tubes 22 is multiple, one of the two adjacent outer tubes 22 is sleeved on the outer periphery of the other outer tube 22 to form a flow passage between the two adjacent outer tubes 22, and correspondingly, the gun head 3 is provided with a spray hole corresponding to the flow passage, and the gun seat 1 is provided with an inlet corresponding to the flow passage. For the convenience of description, the number of outer tubes 22 is taken as two for description, the first outer tube 22 is sleeved on the outer periphery of the inner tube 21 to form a second flow passage 23 between the inner tube 21 and the first outer tube 22, the second outer tube 22 is sleeved on the outer periphery of the first outer tube 22 to form a third flow passage 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 seat 1 has a first inlet 11, a second inlet 12 and a third inlet, the first flow passage 211 connects the first inlet 11 and the first spray hole 31, the second flow passage 23 connects the second inlet 12 and the second spray hole 32, and the third flow passage connects the third inlet and the third spray hole, thereby realizing the spraying of three materials.

[0076] In some embodiments, as shown in Figure 6 The gun barrel 2 is detachably and sealingly connected with the gun seat 1, and the gun barrel 2 is detachably and sealingly connected with the gun head 3.

[0077] Compared with the design in the related art that the gun barrel 2 and the gun head 3 are integrated and the design that the gun head 3, the gun seat and the gun barrel 2 are integrated, the detachable connection between the gun barrel 2 and the gun seat 1 and the detachable connection between the gun barrel 2 and the gun head 3 in the present embodiment facilitate the replacement of the consumed gun head 3 and / or the gun barrel 2 without replacing the gun seat, thereby reducing the replacement cost, or matching the gun head 3 and / or the gun barrel 2 of different lengths to meet the requirements of different processes, or facilitating the disassembly and adjustment of the sealing member to change the inlet end flow area and pressure of the gun head spray hole.

[0078] Optionally, the gun barrel 2 and the gun seat 1 are threadedly connected, and the gun barrel 2 and the gun head 3 are threadedly connected, which can simplify the structure of the gun seat 1, the gun barrel 2 and the gun head 3, has high connection reliability, and facilitates various combinations of the gun seat 1, the gun barrel 2 and the gun head 3, for example, the gun barrel 2 of different lengths can be replaced.

[0079] For example, the gun head 3 is provided with external threads, and the gun barrel 2 is provided with internal threads matched with the external threads of the gun head 3. When the gun head 3 is seriously burned, only the gun head 3 needs to be replaced, thereby reducing the replacement cost.

[0080] Optionally, the gun barrel 2 includes a plurality of gun segments, and the plurality of gun segments are threadedly connected, so that the length of the gun barrel 2 is adjusted by adjusting the number of gun segments.

[0081] Optionally, sealing gaskets 7 are arranged between the gun barrel 2 and the gun seat 1 and between the gun barrel 2 and the gun head 3, which facilitates the improvement of the sealing reliability between the gun barrel 2 and the gun seat 1 and between the gun barrel 2 and the gun head 3.

[0082] In some embodiments, as shown in Figure 6 The outer circumferential surface of the barrel 2 and the outer circumferential surface of the head 3 are both provided with grooves for accommodating the detection piece 6. The thickness of the refractory layer 110 is determined by the corroded length of the detection piece 6, which facilitates the determination of the corrosion condition of the refractory layer 110, and further matches the relative reasonable position of the spray gun and the refractory.

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

[0084] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms “center”, “longitudinal”, “transverse”, “length”, “width”, “thickness”, “upper”, “lower”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inner”, “outer”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential” and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0085] In addition, the terms “first” and “second” are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with “first” and “second” can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of “a plurality of” is at least two, such as two, three, etc., unless otherwise specifically limited.

[0086] In the present application, unless otherwise specifically defined and limited, the terms “mounting”, “connecting”, “connecting”, “fixing” and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected or in communication with each other; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication or interaction relationship of two elements, unless otherwise specifically limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0087] In the present application, unless specifically stated and limited otherwise, a first feature "on" or "under" a second feature can be directly in contact with the second feature, or indirectly in contact with the second feature through an intermediate medium. Also, a first feature "over", "above" and "on top of" a second feature can be directly above or obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature. A first feature "under", "below" and "underneath" a second feature can be directly below or obliquely below the second feature, or simply means that the first feature is horizontally lower than the second feature.

[0088] In the present application, the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" mean that a particular feature, structure, material or characteristic is included in at least one embodiment or example of the present application. Exemplary representations of the above terms in the specification are not necessarily directed to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics can be combined in any suitable manner in one or more embodiments or examples. In addition, different embodiments or examples described in the specification and features of different embodiments or examples can be combined and combined by those skilled in the art without contradiction.

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

Claims

1. An immersion lance, characterized in that The application relates to a gun seat, a gun barrel and a gun head, a connecting assembly, a blocking member and a gun barrel and a gun seat. The gun seat is connected with one end of the gun barrel, and the other end of the gun barrel is connected with one end of the gun head so that the other end of the gun head extends into a reactor. The connecting assembly comprises a connecting piece, a positioning piece and a sealing piece. The connecting piece is connected with the outer circumferential surface of the gun seat.

2. The submerged lance according to claim 1, characterized in that The positioning piece is connected with the outer wall of the reactor through the first connecting hole.

3. The submerged lance according to claim 2, characterized in that The sealing piece is sleeved on the outer circumferential surface of the gun barrel.

4. The submerged lance according to claim 1, characterized in that The sealing piece abuts between the gun seat and the outer wall of the reactor to seal the gap between the gun seat and the outer wall of the reactor.

5. The submerged lance according to claim 4, characterized in that The size of the sealing piece in the axial direction of the gun barrel is adjustable. The positioning piece comprises a positioning stud and a positioning nut.

6. The submerged lance according to claim 5, characterized in that The positioning stud is connected with the outer wall of the reactor through the first connecting hole. The positioning nut is threadedly connected with the positioning stud and abuts with the connecting piece on at least one side in the axial direction of the gun barrel. The connecting piece is a connecting flange.

7. The submerged lance according to claim 4, characterized in that The first connecting hole is at least two.

8. The submerged lance according to claim 4, characterized in that The first connecting hole is arranged at intervals in the circumferential direction of the connecting flange.

9. The submerged lance according to claim 4, characterized in that The positioning piece is at least two.

10. The submerged lance according to any one of claims 1 to 9, characterized in that The positioning piece is arranged one by one with the first connecting hole. The gun head has at least one first spray hole and at least one second spray hole. The first spray hole and the second spray hole are arranged at intervals in the radial direction of the gun barrel. The first spray hole comprises a plurality of first holes. The first holes are arranged at intervals in the circumferential direction of the gun head. The second spray hole comprises a plurality of second holes. The second holes are arranged at intervals in the circumferential direction of the gun head. The gun head has a first communication hole. The first communication hole is located between one end of the gun head and the other end of the gun head. The first communication hole is arranged between adjacent two first holes to communicate the plurality of first holes. The gun head has a second communication hole. The second communication hole is located between one end of the gun head and the other end of the gun head. The second communication hole is arranged between adjacent two second holes to communicate the plurality of second holes. The first spray hole comprises a central spray hole. The central spray hole is coaxial with the central axis of the gun head. The blocking member is detachably connected with the gun head adjacent to one end of the gun barrel. The blocking member blocks at least part of the first spray hole and / or at least part of the second spray hole. The gun barrel comprises an inner barrel and an outer barrel. The inner barrel has a first flow passage. The outer barrel is fitted on the outer circumferential surface of the inner barrel. The gun seat has a first inlet and a second inlet. The first flow passage communicates the first inlet and the first spray hole. The second flow passage communicates the second inlet and the second spray hole. The gun barrel and the gun seat are detachably and sealingly connected. The gun barrel and the gun head are detachably and sealingly connected. The outer circumferential surface of the barrel and the outer circumferential surface of the gun head are both provided with a groove for accommodating a detection piece.

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