CN111889256A - Spray gun device and lime kiln - Google Patents

Abstract

The invention relates to a spray gun device and a lime kiln, wherein the spray gun device comprises a first spray gun, a second spray gun and a spray gun fixing plate, a lower mounting hole is formed in the spray gun fixing plate, and the first spray gun can be inserted in the lower mounting hole in a sealing and sliding manner. The inlet end of the first spray gun is positioned at one side of the spray gun fixing plate, and the outlet end of the first spray gun is positioned at the other side of the spray gun fixing plate. The second spray gun is connected with the first spray gun in series, and the connection point of the second spray gun and the first spray gun is positioned on one side of the spray gun fixing plate or the other side of the spray gun fixing plate. The invention can form various working condition combinations, meet the requirements of users on using different fuels and realize high-efficiency and high-quality production.

Description

Spray gun device and lime kiln

Technical Field

The invention relates to the technical field of lime production, in particular to a spray gun device and a lime kiln.

Background

Lime is an important production raw material and has wide application in the industries of steel, chemical industry, building materials and the like. Lime is used as one of important flux and slagging material in steel production, and large and medium-sized steel enterprises in China basically have production facilities for metallurgical lime. With the continuous improvement of the steel smelting level in China, higher requirements are put forward on the quality of metallurgical lime.

In the process of producing lime by the lime kiln, fuel is conveyed to a kiln chamber through a plurality of spray guns uniformly arranged on the lime kiln, is sprayed out of the interior of a limestone material layer, forms a high-temperature area at a spraying port, provides heat for producing quick lime by calcining and decomposing limestone, and forms lime by calcining the limestone at a high temperature. As a common lime production device, a fuel combustion system of the lime kiln can continuously maintain efficient and stable heat supply, and has important influence on the quality of metallurgical lime. The lime kiln is mostly used for calcining fuels such as coal powder, coke oven gas, converter gas, blast furnace gas, natural gas, heavy oil and the like to produce high-quality active lime. Most of the existing lime kiln spray guns are of a single-branch pipe-shaped structure, and fuels such as coal powder or coal gas enter from an inlet of the spray gun and are sprayed out from an outlet at the bottom of the spray gun. A plurality of spray guns are uniformly distributed in the kiln chamber to form a spray gun matrix, and fuel is fed into the kiln chamber through the spray gun matrix and is combusted at the outlet of the spray gun to release heat so as to supply heat for the lime kiln.

However, different enterprises have different production conditions for the production of metallurgical lime of steel enterprises, and in the production process of lime, enterprises hope to select different fuels such as coke oven gas, blast furnace gas, natural gas, coal powder and the like according to the conditions of the enterprises to improve the production efficiency. The conventional spray gun device adopts independent coal gas or coal powder as a fuel medium to calcine lime, the fuel medium is single, the utilization rate of the lime kiln is low, and the requirement of efficient high-quality production cannot be met. Meanwhile, in the lime calcination production process, limestone raw materials are required to be continuously added from the top of the lime kiln, so that the spray gun positioned in the lime kiln is damaged by impact, abrasion and the like, and the service life of the spray gun is shortened. In addition, the temperature of the calcining zone in the lime kiln can reach 1100 ℃, and the service life of the spray gun can be seriously shortened when the spray gun is in a high-temperature environment for a long time.

Therefore, the inventor provides a spray gun device and a lime kiln by virtue of experience and practice of related industries for many years so as to overcome the defects in the prior art.

Disclosure of Invention

The invention aims to provide a spray gun device and a lime kiln, which can form various working condition combinations, meet the requirements of users on using different fuels and realize high-efficiency and high-quality production.

The purpose of the invention can be realized by adopting the following technical scheme:

the invention provides a spray gun device which comprises a first spray gun, a second spray gun and a spray gun fixing plate, wherein the first spray gun is arranged on the first spray gun; a lower mounting hole is formed in the spray gun fixing plate, and the first spray gun can be inserted into the lower mounting hole in a sealing and sliding manner; the inlet end of the first spray gun is positioned at one side of the spray gun fixing plate, and the outlet end of the first spray gun is positioned at the other side of the spray gun fixing plate; the second spray gun is connected with the first spray gun in series, and the connection point of the second spray gun and the first spray gun is positioned on one side of the spray gun fixing plate or the other side of the spray gun fixing plate.

In a preferred embodiment of the invention, the spray gun fixing plate is vertically arranged, the first spray gun and the second spray gun are both in an inverted L shape, and the horizontal section of the first spray gun is positioned right below the horizontal section of the second spray gun; the horizontal section of the first spray gun can be horizontally inserted into the lower mounting hole in a sealing and sliding manner, and the vertical section of the second spray gun is connected with the first spray gun in series.

In a preferred embodiment of the invention, the inlet end of the second spray gun is positioned at one side of the spray gun fixing plate, and the outlet end of the second spray gun is positioned at the other side of the spray gun fixing plate; the inner diameter of the first spray gun is larger than the outer diameter of the second spray gun, the vertical section of the second spray gun is coaxially inserted and fixed in the vertical section of the first spray gun, and the outlet end of the second spray gun is flush with the outlet end of the first spray gun in the vertical position; the spray gun fixing plate is further provided with an upper mounting hole, the upper mounting hole and the lower mounting hole are arranged at an interval from top to bottom, and the horizontal section of the second spray gun can be horizontally sealed and slidably inserted into the upper mounting hole.

In a preferred embodiment of the present invention, the second spray gun is located at one side of the spray gun fixing plate, the vertical section of the second spray gun is vertically inserted and fixed on the horizontal section of the first spray gun, and the outlet end of the second spray gun is communicated with the interior of the first spray gun.

In a preferred embodiment of the invention, at least two adjusting studs are uniformly arranged at intervals along the circumferential direction of the outer side of the horizontal section of the first spray gun, a preset gap is reserved between each adjusting stud and the outer wall of the first spray gun, and the adjusting studs are positioned between the inlet end of the first spray gun and the spray gun fixing plate; an adjusting flange is fixedly sleeved on the horizontal section of the first spray gun and located between the inlet end of the first spray gun and the spray gun fixing plate, the first end of the adjusting stud is fixedly connected with the spray gun fixing plate, and the second end of the adjusting stud is fixedly connected with the adjusting flange through an adjusting nut.

In a preferred embodiment of the invention, the adjusting flange comprises a first adjusting flange and a second adjusting flange, the first adjusting flange is sleeved on the horizontal section of the first spray gun and is fixedly connected with the second end of the adjusting stud through an adjusting nut; the second adjusting flange is enclosed by at least two arc plates to form, an annular clamping groove is formed in the outer wall of the horizontal section of the first spray gun, the arc plates are clamped in the annular clamping groove, and each arc plate is fixedly connected with the first adjusting flange.

In a preferred embodiment of the invention, a first sealing flange is sleeved on the horizontal section of the first spray gun at a preset gap between the adjusting stud and the outer wall of the first spray gun, and the first sealing flange is fixedly connected with the spray gun fixing plate; the interval between the inner wall of first sealing flange and the outer wall of first spray gun is formed with first annular seal space, overlaps at first annular seal space and is equipped with first sealing member.

In a preferred embodiment of the present invention, the first sealing flange is a necked flange, a neck portion of the first sealing flange is inserted into the lower mounting hole and welded and fixed, and a first limiting convex ring with a reduced diameter is formed at an end portion of the neck portion of the first sealing flange, which is far away from the flange plate of the first sealing flange, and is inwardly protruded; a first pressing flange is sleeved on the horizontal section of the first spray gun and positioned between the adjusting flange and the first sealing flange, the first pressing flange is a neck flange, and the first pressing flange is fixedly connected with the first sealing flange; the neck of the first pressing flange extends into the interval between the inner wall of the first sealing flange and the outer wall of the first spray gun, a first preset installation distance is reserved between the neck of the first pressing flange and the first limiting convex ring, and an annular area formed by the first preset installation distance forms a first annular sealing space.

In a preferred embodiment of the invention, a second sealing flange is sleeved on the horizontal section of the second spray gun at a distance between the inlet end of the second spray gun and the spray gun fixing plate, and the second sealing flange is fixedly connected with the spray gun fixing plate; and a second annular sealing space is formed between the inner wall of the second sealing flange and the outer wall of the second spray gun at intervals, and a second sealing element is sleeved in the second annular sealing space.

In a preferred embodiment of the present invention, the second sealing flange is a necked flange, a neck portion of the second sealing flange is inserted into the upper mounting hole and welded and fixed, and a second limiting convex ring with a reduced diameter is formed at an end portion of the neck portion of the second sealing flange, which is far away from the flange plate of the second sealing flange, and is protruded inwards; a second compression flange is sleeved on the horizontal section of the second spray gun and positioned between the inlet end of the second spray gun and the second sealing flange, the second compression flange is a neck flange, and the second compression flange is fixedly connected with the second sealing flange; the neck of the second hold-down flange extends into the space between the inner wall of the second sealing flange and the outer wall of the second spray gun, a second preset mounting distance is reserved between the neck of the second hold-down flange and the second limiting convex ring, and an annular area formed by the second preset mounting distance forms a second annular sealing space.

In a preferred embodiment of the invention, a spray gun protection cover is fixed on the other side of the spray gun fixing plate, and the spray gun protection cover is of a box-type structure with an opening at the bottom; the part of the first spray gun, which is positioned at the other side of the spray gun fixing plate, is positioned in the spray gun protective cover, and the outlet end of the first spray gun extends out of the bottom of the spray gun protective cover.

In a preferred embodiment of the invention, the spray gun protective cover is enclosed by a top plate and three side plates, the upper ends of the three side plates are higher than the top plate, and a top groove is formed between the part of the three side plates higher than the top plate and the top surface of the top plate.

In a preferred embodiment of the invention, a horizontally placed support bottom plate is fixed at the bottom of the spray gun protection cover, a through hole is formed in the support bottom plate, the through hole is an oblong hole, and the vertical section of the first spray gun penetrates out of the through hole.

In a preferred embodiment of the present invention, an arc supporting plate is disposed under the horizontal section of the first spray gun, the arc supporting plate is located at the other side of the spray gun fixing plate, the top surface of the arc supporting plate is closely attached to the outer wall of the first spray gun, and the arc supporting plate is fixedly connected to the support base plate through the longitudinal support plate.

In a preferred embodiment of the invention, a first cooling pipe is connected in series on the horizontal section of the first spray gun, the first cooling pipe is positioned at one side of the spray gun fixing plate, and the axis of the first cooling pipe is perpendicular to the axis of the horizontal section of the first spray gun; the horizontal section of the second spray gun is connected with a second cooling pipe in series, the second cooling pipe is positioned on one side of the spray gun fixing plate, and the axial direction of the second cooling pipe is perpendicular to the axial direction of the horizontal section of the second spray gun.

In a preferred embodiment of the present invention, a first connecting flange and a second connecting flange are fixed to an inlet end of the first spray gun and an inlet end of the second spray gun, respectively, and a third connecting flange and a fourth connecting flange are fixed to ends of the first cooling pipe and the second cooling pipe, respectively.

In a preferred embodiment of the invention, the first spray gun comprises a first horizontal pipe, a first transition pipe and a first vertical pipe which are connected in sequence from the inlet end to the outlet end of the first spray gun, wherein the first horizontal pipe and the first vertical pipe are respectively a horizontal section and a vertical section of the first spray gun, one end of the first horizontal pipe, which is far away from the first transition pipe, is used as the inlet end of the first spray gun, and one end of the first vertical pipe, which is far away from the first transition pipe, is used as the outlet end of the first spray gun; the second spray gun comprises a second horizontal pipe, a second transition pipe and a second vertical pipe which are sequentially connected from the inlet end to the outlet end of the second spray gun, the second horizontal pipe and the second vertical pipe are respectively a horizontal section and a vertical section of the second spray gun, one end, far away from the second transition pipe, of the second horizontal pipe serves as the inlet end of the second spray gun, and one end, far away from the second transition pipe, of the second vertical pipe serves as the outlet end of the second spray gun.

The invention also provides a lime kiln, which comprises a kiln body with a kiln chamber; a plurality of spray gun devices are fixed at intervals in the circumferential direction of the kiln body, the spray gun fixing plate is fixedly connected with the side wall of the kiln body, one side of the spray gun fixing plate faces the outside of the kiln chamber, the other side of the spray gun fixing plate faces the inside of the kiln chamber, and the outlet end of the first spray gun is located in the kiln chamber.

In a preferred embodiment of the invention, a plurality of through holes are arranged on the side wall of the kiln body at intervals along the circumferential direction of the kiln body, and a kiln body flange is fixed on the outer wall of the kiln body at a position corresponding to each through hole; the spray gun fixing plate is a spray gun mounting flange and is fixedly connected with the corresponding kiln body flange, and the horizontal section of the first spray gun penetrates through the through hole.

According to the invention, through the matching of the first spray gun and the second spray gun, according to the existing fuel and the process requirements of the lime kiln of enterprises, various working condition combinations can be formed by carrying out different controls on the input fuel of the first spray gun and the second spray gun, so that the requirements of users for using different fuels are met, and the efficient production is realized. Simultaneously, according to the burning medium of difference, can adjust the exit end position of first spray gun through sliding first spray gun to improve combustion effect, improve lime kiln's utilization ratio, satisfy the requirement of high efficiency high quality production.

Drawings

The drawings are only for purposes of illustrating and explaining the present invention and are not to be construed as limiting the scope of the present invention. Wherein:

FIG. 1: the invention provides a structural schematic diagram of a spray gun device matched with a kiln body of a lime kiln.

FIG. 2: the invention provides a cross section of a spray gun device matched with a kiln body of a lime kiln.

FIG. 3: a partial enlarged view of the first and second lances in figure 2.

FIG. 4: the invention provides a cross section of a spray gun positioning adjusting device, a first spray gun sealing device and a first spray gun matched with each other.

FIG. 5: which is a partial enlargement at a in fig. 2.

FIG. 6: the invention provides a partial perspective view of a lance device in cooperation with a kiln body of a lime kiln.

FIG. 7: the invention provides a schematic structural diagram of a first spray gun.

FIG. 8: the invention provides a partial enlarged view of a first horizontal pipe.

FIG. 9: is a schematic structural view of the second spray gun in fig. 2.

FIG. 10: the invention provides a structural schematic diagram of a spray gun fixing plate.

FIG. 11: is another schematic structural diagram of the matching of the spray gun device provided by the invention and a kiln body of a lime kiln.

The reference numbers illustrate:

1. a first spray gun; 11. a first horizontal tube; 111. a first connecting flange; 12. a first transition duct; 13. a first vertical pipe; 14. an annular neck; 15. a limiting step; 16. a first cooling pipe; 161. a third connecting flange;

2. a second spray gun; 21. a second horizontal tube; 211. a second connecting flange; 22. a second transition duct; 23. a second vertical pipe; 24. a second cooling pipe; 241. a fourth connecting flange;

3. a spray gun fixing plate; 31. an upper mounting hole; 32. a lower mounting hole;

4. a spray gun positioning and adjusting device;

41. adjusting the stud; 42. adjusting the flange; 421. a first adjustment flange; 422. a second adjustment flange; 43. adjusting the nut; 44. a first flange nut; 45. a first flange bolt;

5. a first lance sealing device;

51. a first sealing flange; 511. a first limit convex ring; 52. a first seal member; 53. a first hold-down flange; 54. a first compression nut; 55. a first connecting bolt;

6. a second lance sealing device;

61. a second sealing flange; 611. a second limit convex ring; 62. a second seal member; 63. a second hold-down flange; 64. a second compression nut; 65. a second connecting bolt;

7. a spray gun protective cover; 71. a top plate; 72. a side plate; 73. a top groove;

8. a spray gun support;

81. a support base plate; 811. perforating; 82. a circular arc supporting plate; 83. a longitudinal support plate;

9. a kiln body; 91. a through hole; 92. a kiln body flange; 93. a second flange nut; 94. and a second flange bolt.

Detailed Description

In order to more clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will now be described with reference to the accompanying drawings.

As shown in fig. 1 to 11, the present embodiment provides a spray gun apparatus including a first spray gun 1, a second spray gun 2, and a spray gun fixing plate 3. A lower mounting hole 32 is formed in the lance fixing plate 3, and the first lance 1 is sealingly slidably inserted in the lower mounting hole 32. The inlet end of the first spray gun 1 is positioned at one side of the spray gun fixing plate 3, and the outlet end of the first spray gun 1 is positioned at the other side of the spray gun fixing plate 3. The second spray gun 2 is connected with the first spray gun 1 in series, and the connection point of the second spray gun 2 and the first spray gun 1 is positioned on one side of the spray gun fixing plate 3 or the other side of the spray gun fixing plate 3.

Wherein, general spray gun fixed plate 3 vertical setting, first spray gun 1 and second spray gun 2 all are the shape of falling L, and the horizontal segment of first spray gun 1 is located the horizontal segment of second spray gun 2 under. The horizontal section of the first spray gun 1 can be horizontally inserted into the lower mounting hole 32 in a sealing and sliding manner, the vertical section of the second spray gun 2 is connected with the first spray gun 1 in series, and the outlet end of the first spray gun 1 is arranged downwards.

When the lime kiln is installed, a plurality of spray gun devices are uniformly fixed on a kiln body 9 of the lime kiln at intervals in the circumferential direction, a spray gun fixing plate 3 is fixed with the kiln body 9, one side of the spray gun fixing plate 3 faces the outside of a kiln chamber of the kiln body 9, the other side of the spray gun fixing plate 3 faces the inside of the kiln chamber of the kiln body 9, the outlet end of a first spray gun 1 in each spray gun device is located in the kiln chamber of the kiln body 9, and the inlet end of the first spray gun 1 and the inlet end of a second spray gun 2 are respectively connected with respective fuel systems to provide necessary fuel for calcining limestone.

In the embodiment, the second spray gun 2 and the first spray gun 1 are connected in series in two connection modes, and the first connection mode is that the connection point of the second spray gun 2 and the first spray gun 1 is positioned at the other side of the spray gun fixing plate 3 (namely positioned in the kiln chamber), as shown in fig. 1 and 2; the second way of connection is that the connection point of the two is located at one side of the lance fixing plate 3 (i.e. outside the kiln chamber), as shown in fig. 11. When the spray gun is used, under different connection modes, different control can be carried out on input fuels of the first spray gun 1 and the second spray gun 2, and various working condition combinations are formed. Meanwhile, the first spray gun 1 can be slid according to the requirement to adjust the position of the outlet end of the first spray gun 1, so that the combustion effect of the fuel is improved.

From this, the spray gun device in this embodiment, through the cooperation of first spray gun 1 and second spray gun 2, according to the existing fuel of enterprise and the technology demand of limekiln, carries out different control through the input fuel to first spray gun 1 and second spray gun 2, can form multiple operating mode combination, and then satisfies the demand that the user used different fuels, realizes high-efficient production. Simultaneously, according to the burning medium of difference, can adjust the exit end position of first spray gun 1 through sliding first spray gun 1 to improve combustion effect, improve the utilization ratio of lime kiln, satisfy the requirement of high efficiency high quality production.

In a specific implementation manner, when the second spray gun 2 and the first spray gun 1 are connected in series by the first connection manner, in order to facilitate processing and installation and ensure a combustion effect, as shown in fig. 1, 2 and 10, an inlet end of the second spray gun 2 is located at one side of the spray gun fixing plate 3, and an outlet end of the second spray gun 2 is located at the other side of the spray gun fixing plate 3. The internal diameter of first spray gun 1 is greater than the external diameter of second spray gun 2, and the vertical section coaxial the inserting of second spray gun 2 is established and is fixed in the vertical section of first spray gun 1, and the exit end of second spray gun 2 and the exit end of first spray gun are at vertical position parallel and level (promptly both exit end height is the same). An upper mounting hole 31 is further formed in the spray gun fixing plate 3, the upper mounting hole 31 and the lower mounting hole 32 are arranged at intervals up and down, and the horizontal section of the second spray gun 2 can be horizontally inserted into the upper mounting hole 31 in a sealing and sliding manner.

Wherein, the exit end of second spray gun 2 and first spray gun 1 aligns and can form a smooth calcination face, is favorable to providing the heat for the chemical reaction of lime stone, improves combustion quality. Generally, an insertion hole is formed in the transition section of the first spray gun 1, and the vertical section of the second spray gun 2 is inserted into the vertical section of the first spray gun 1 through the insertion hole and is welded and fixed with the first spray gun 1. A preset gap exists between the inner wall of the vertical section of the first spray gun 1 and the outer wall of the vertical section of the second spray gun 2, the size of the gap is determined according to the process requirement, and when fuel is input into the first spray gun 1, the fuel passes through the gap. Under the condition that second spray gun 2 and first spray gun 1 adopt a kind of connected mode, through carrying out different control to the input fuel of first spray gun 1 and second spray gun 2, can form multiple operating mode combination, mainly have following four kinds of operating modes:

firstly, only the first spray gun 1 inputs fuel, and the sectional area of the fuel at the spray gun outlet is the difference between the inner diameter area of the first spray gun 1 and the outer diameter area of the second spray gun 2; secondly, only the second spray gun 2 inputs fuel, and the sectional area of the fuel at the spray gun outlet is the inner diameter area of the second spray gun 2; thirdly, the same fuel is simultaneously input into the first spray gun 1 and the second spray gun 2, and the cross section area of the fuel at the spray gun outlet is the area of the inner diameter of the first spray gun 1 minus the area of the cross section material of the second spray gun 2 (namely minus the wall thickness cross section area of the second spray gun 2); and fourthly, different fuels are respectively input into the first spray gun 1 and the second spray gun 2, at the moment, the sectional area of the fuel of the first spray gun 1 at the spray gun outlet is the difference value between the inner diameter area of the first spray gun 1 and the outer diameter area of the second spray gun 2, and the sectional area of the fuel of the second spray gun 2 at the spray gun outlet is the inner diameter area of the second spray gun 2, at the moment, different fuels can be simultaneously input into the kiln chamber, meanwhile, the first spray gun 1 can be slid according to needs to adjust the position of the outlet end of the first spray gun 1 in the kiln chamber, and the second spray gun 2 is driven to slide together when the first spray gun 1 slides, so that the combustion effect of the fuels is improved.

When the second spray gun 2 and the first spray gun 1 are connected in series by adopting the second connection mode, in order to facilitate processing and installation and ensure the combustion effect, as shown in fig. 11, the second spray gun 2 is positioned at one side of the spray gun fixing plate 3, the vertical section of the second spray gun 2 is vertically inserted and fixed on the horizontal section of the first spray gun 1, and the outlet end of the second spray gun 2 is communicated with the inside of the first spray gun 1.

Wherein, the outlet end of the second spray gun 2 is generally welded and fixed with the horizontal section of the first spray gun 1. Under the condition that the second spray gun 2 and the first spray gun 1 adopt the second connection mode, different control is carried out on input fuels of the first spray gun 1 and the second spray gun 2, various working condition combinations can be formed, only the fuel can be input into the first spray gun 1, only the fuel can be input into the second spray gun 2, the same fuel can be simultaneously input into the first spray gun 1 and the second spray gun 2, or different fuels can be respectively input into the first spray gun 1 and the second spray gun 2, and under the four working conditions, the sectional areas of the fuels at the spray gun outlets are the inner diameter area of the first spray gun 1.

Therefore, when the second spray gun 2 and the first spray gun 1 adopt the first connection mode or the second connection mode, the same fuel can be simultaneously input into the first spray gun 1 and the second spray gun 2, different fuels can be respectively input into the first spray gun 1 and the second spray gun 2, or the fuel can be input into only one of the first spray gun 1 and the second spray gun 2 according to the fuel condition of a user and the process requirement. Through carrying out different control to the input fuel of first spray gun 1 and second spray gun 2, can form multiple operating mode combination, and then satisfy the demand that the user used different fuels, realize high-efficient production.

Further, for the above two connection modes, for convenience of processing and installation, as shown in fig. 7, the first spray gun 1 includes, from the inlet end to the outlet end thereof, a first horizontal pipe 11, a first transition pipe 12 and a first vertical pipe 13 which are connected in sequence, the first horizontal pipe 11 and the first vertical pipe 13 are respectively a horizontal section and a vertical section of the first spray gun 1, one end of the first horizontal pipe 11, which is far away from the first transition pipe 12, serves as the inlet end of the first spray gun 1, and one end of the first vertical pipe 13, which is far away from the first transition pipe 12, serves as the outlet end of the first spray gun 1. As shown in fig. 9 and 11, the second spray gun 2 comprises a second horizontal pipe 21, a second transition pipe 22 and a second vertical pipe 23 connected in sequence from the inlet end to the outlet end thereof, the second horizontal pipe 21 and the second vertical pipe 23 are respectively a horizontal section and a vertical section of the second spray gun 2, one end of the second horizontal pipe 21 far away from the second transition pipe 22 serves as the inlet end of the second spray gun 2, and one end of the second vertical pipe 23 far away from the second transition pipe 22 serves as the outlet end of the second spray gun 2.

It should be noted that, the first horizontal pipe 11 and the second horizontal pipe 21 may be formed by splicing multiple sub-horizontal pipes according to length requirements, and two adjacent sub-horizontal pipes are sealed and fixed by a flange, and a specific connection manner is the prior art and is not described herein again.

In order to facilitate the adjustment of the position of the first spray gun 1, as shown in fig. 1, 2, 4, 7 and 8, at least two adjusting studs 41 are uniformly spaced along the circumferential direction of the horizontal section of the first spray gun 1, a predetermined gap is left between each adjusting stud 41 and the outer wall of the first spray gun 1, and the adjusting studs 41 are located between the inlet end of the first spray gun 1 and the spray gun fixing plate 3. An adjusting flange 42 is fixedly sleeved on the horizontal section of the first spray gun 1 and positioned between the inlet end of the first spray gun 1 and the spray gun fixing plate 3, a first end of an adjusting stud 41 is fixedly connected with the spray gun fixing plate 3, and a second end of the adjusting stud 41 is fixedly connected with the adjusting flange 42 through an adjusting nut 43.

The number of the adjustment studs 41 may be determined as needed, and for example, four adjustment studs 41 are provided in the present embodiment. Generally, in order to improve the structural stability, an adjusting nut 43 is fixed to the adjusting flange 42 at the second end of each adjusting stud 41 and on both sides of the adjusting flange 42. In the second connection method, the adjustment flange 42 is located between the connection point of the second spray gun 2 and the first spray gun 1 and the spray gun fixing plate 3.

Thus, the adjusting stud 41 and the adjusting flange 42 form the spray gun positioning adjusting device 4, and according to the process requirements, the adjusting flange 42 can drive the first spray gun 1 to approach or leave the kiln body 9 by rotating the adjusting nut 43 on the adjusting stud 41, so as to adjust the position of the outlet end of the first spray gun 1 in the kiln chamber of the kiln body 9, and achieve the purpose of positioning and adjusting the first spray gun 1.

In practical application, in order to facilitate the fixing and installation of the adjusting flange 42, the adjusting flange 42 includes a first adjusting flange 421 and a second adjusting flange 422, and the first adjusting flange 421 is sleeved on the horizontal section of the first spray gun 1 and is fixedly connected with the second end of the adjusting stud 41 through the adjusting nut 43. Second adjusting flange 422 is enclosed by two at least arc and closes and constitutes, has seted up ring groove 14 at the horizontal segment outer wall of first spray gun 1, and the arc card is established in ring groove 14, every arc all with first adjusting flange 421 fixed connection.

Wherein, generally, first adjusting flange 421 and second adjusting flange 422 are plate type flanges, and each arc-shaped plate is fixedly connected with first adjusting flange 421 through first flange nut 44 and first flange bolt 45. The number of the arc-shaped plates is determined according to the requirement, for example, two arc-shaped plates are arranged in the embodiment. In order to guarantee that adjusting flange 42 is connected more firmly with first spray gun 1, on the horizontal segment outer wall of first spray gun 1 and be located between ring groove 14 and the spray gun fixed plate 3 and form a spacing step 15 that diameter enlarges to the direction of spray gun fixed plate 3, first adjusting flange 421 can support and lean on spacing step 15.

So, through the cooperation of first adjusting flange 421 and second adjusting flange 422, when revolving adjusting nut 43, alright remove in order to drive first spray gun 1, it is more convenient.

Further, in order to ensure the sealing performance between the first spray gun 1 and the lower mounting hole 32 of the spray gun fixing plate 3, as shown in fig. 1 to 4, a first sealing flange 51 is sleeved on a horizontal section of the first spray gun 1 at a predetermined gap between the adjusting stud 41 and the outer wall of the first spray gun 1, and the first sealing flange 51 is fixedly connected with the spray gun fixing plate 3. A first annular sealing space is formed at an interval between the inner wall of the first sealing flange 51 and the outer wall of the first spray gun 1, and a first sealing element 52 is sleeved in the first annular sealing space.

In detail, for convenience of processing and installation, the first sealing flange 51 is a necked flange, a neck portion of the first sealing flange 51 is inserted into the lower mounting hole 32 and is welded and fixed, and a first limiting convex ring 511 with a reduced diameter is formed at the end portion of the neck portion of the first sealing flange 51 far away from the flange plate in an inward protruding manner. On the horizontal segment of first spray gun 1 and be located and overlap and be equipped with first hold-down flange 53 between adjusting flange 42 and the first sealing flange 51, first hold-down flange 53 is the neck flange, and first hold-down flange 53 and first sealing flange 51 adjustable ground fixed connection. The neck of the first hold-down flange 53 extends into the space between the inner wall of the first sealing flange 51 and the outer wall of the first spray gun 1, and a first preset installation distance is reserved between the neck and the first limit convex ring 511, and an annular region formed by the first preset installation distance forms a first annular sealing space.

Specifically, the flange plate of the first hold-down flange 53 is fixedly connected with the flange plate of the first sealing flange 51 through a first hold-down nut 54 and a first connecting bolt 55, the sealing effect is ensured by adjusting the compression degree between the first hold-down flange 53 and the first sealing flange 51, and the inner wall of the first limit convex ring 511 and the inner wall of the neck of the first hold-down flange 53 are tightly attached to the outer wall of the first spray gun 1. The first sealing flange 51, the first pressing flange 53 and the first sealing element 52 form a first lance sealing device 5, and the first pressing flange 53 can be pressed by rotating the first pressing nut 54 on the first connecting bolt 55, so that the first pressing flange 53 compresses the first sealing element 52 along the axial direction of the first lance 1 to achieve the sealing effect.

Further, for the first connection manner, in order to ensure the sealing property between the second spray gun 2 and the upper mounting hole 31 of the spray gun fixing plate 3, as shown in fig. 1, 2 and 5, a second sealing flange 61 is sleeved on the horizontal section of the second spray gun 2 and between the inlet end of the second spray gun 2 and the spray gun fixing plate 3 at an interval, and the second sealing flange 61 is fixedly connected with the spray gun fixing plate 3. A second annular sealing space is formed between the inner wall of the second sealing flange 61 and the outer wall of the second spray gun 2, and a second sealing element 62 is sleeved in the second annular sealing space.

In detail, for convenience of processing and installation, the second sealing flange 61 is a necked flange, a neck portion of the second sealing flange 61 is inserted into the upper mounting hole 31 and is welded and fixed, and a second limiting convex ring 611 with a reduced diameter is formed at the end portion of the neck portion of the second sealing flange 61, which is far away from the flange plate, and protrudes inwards. On the horizontal segment of second spray gun 2 and be located the entrance point of second spray gun 2 and the cover is equipped with second hold-down flange 63 between second sealing flange 61, and second hold-down flange 63 is the neck flange, and second hold-down flange 63 and second sealing flange 61 adjustable ground fixed connection. The neck of the second hold-down flange 63 extends into the space between the inner wall of the second sealing flange 61 and the outer wall of the second spray gun 2, and a second preset installation distance is reserved between the neck and the second limit convex ring 611, and an annular region formed by the second preset installation distance forms a second annular sealing space.

Specifically, the flange plate of the second hold-down flange 63 is fixedly connected with the flange plate of the second sealing flange 61 through a second hold-down nut 64 and a second connecting bolt 65, the sealing effect is ensured by adjusting the compression degree between the second hold-down flange 63 and the second sealing flange 61, and the inner wall of the second limit convex ring 611 and the inner wall of the neck of the second hold-down flange 63 are tightly attached to the outer wall of the second spray gun 2. The second sealing flange 61, the second pressing flange 63 and the second sealing element 62 form a second lance sealing device 6, and the second pressing flange 63 can be pressed by rotating a second pressing nut 64 on a second connecting bolt 65, so that the second pressing flange 63 compresses the second sealing element 62 in the axial direction of the second lance 2, and the sealing effect is achieved.

Because the temperature in the lime kiln is high, the first sealing element 52 and the second sealing element 62 are both high-temperature-resistant sealing elements. Typically, the first seal 52 and the second seal 62 are each preferably a packing set that is spirally wound around the outer wall of the first spray gun 1 or the second spray gun 2 to provide a sealing function. Of course, other types of seals may be used as desired, and this embodiment is merely illustrative.

Further, in order to prevent the limestone raw material fed from the top of the lime kiln from damaging the respective lances by impact, abrasion, etc. during the lime calcination production, as shown in fig. 1, 2, 6 and 11, a lance protection cover 7 is fixed to the other side of the lance fixing plate 3, and the lance protection cover 7 has a box-type structure with an open bottom. The part of the first spray gun 1, which is positioned at the other side of the spray gun fixing plate 3, is positioned in the spray gun protective cover 7, and the outlet end of the first spray gun 1 extends out of the bottom of the spray gun protective cover 7.

Specifically, when the second spray gun 2 is connected with the first spray gun 1 in a first mode, the parts, located on the other side of the spray gun fixing plate 3, of the first spray gun 1 and the second spray gun 2 are both located in the spray gun protective cover 7, and both the first spray gun 1 and the second spray gun 2 are protected; when the second connection mode is adopted for connection, the part of the first spray gun 1, which is positioned on the other side of the spray gun fixing plate 3, is positioned in the spray gun protective cover 7, and the first spray gun 1 is mainly protected. Therefore, the spray gun protective cover 7 can protect each spray gun to a certain extent, and the service life of each spray gun is prolonged.

Further, in order to protect each spray gun better, the spray gun protection cover 7 is formed by enclosing a top plate 71 and three side plates 72, the upper ends of the three side plates 72 are higher than the top plate 71, and a top groove 73 is formed between the part of the three side plates 72 higher than the top plate 71 and the top surface of the top plate 71.

Therefore, limestone raw materials enter the kiln body 9 from the top of the lime kiln, a certain amount of limestone can be stored in the top groove 73, and newly added limestone and limestone in the top groove 73 form a material grinding state, so that the impact and abrasion of the limestone raw materials on the spray gun protection cover 7 can be reduced, and the spray gun protection cover 7 can form long-term effective protection on the first spray gun 1 and the second spray gun 2 in the kiln body 9.

Further, in order to avoid the first spray gun 1 from shaking in the kiln body 9, as shown in fig. 2 and 6, a horizontally placed support bottom plate 81 is fixed at the bottom of the spray gun protection cover 7, a through hole 811 is formed in the support bottom plate 81, the through hole 811 is an oblong hole, and a vertical section of the first spray gun 1 penetrates through the through hole 811. An arc supporting plate 82 is arranged right below the horizontal section of the first spray gun 1, the arc supporting plate 82 is positioned on the other side of the spray gun fixing plate 3, the top surface of the arc supporting plate 82 is tightly attached to the outer wall of the first spray gun 1, and the arc supporting plate 82 is fixedly connected with a supporting bottom plate 81 through a longitudinal supporting plate 83.

Wherein, the long axis direction of the oblong hole extends along the axial direction of the horizontal section of the first spray gun 1, and the support bottom plate 81 is welded on the side plate 72 of the spray gun protection cover 7. The cross section of the arc supporting plate 82 is arc-shaped, and the shape of the arc supporting plate 82 is matched with that of the first spray gun 1. The shape of the longitudinal support plate 83 may be determined as needed, but the present invention is not limited thereto.

In adjusting the position of the first lance 1, the vertical section of the first lance 1 is able to move horizontally within the bore 811. Foretell supporting baseplate 81, circular arc layer board 82 and longitudinal support board 83 constitute spray gun strutting arrangement 8, can effectively support and spacing the vertical section of first spray gun 1 through supporting baseplate 81's setting, can effectively support and spacing the horizontal segment of first spray gun 1 through circular arc layer board 82, avoid first spray gun 1 to appear rocking at the during operation, guarantee that the exit end of first spray gun 1 is vertical down all the time, the stability of each spray gun work has been guaranteed, the combustion effect has been guaranteed.

Further, in order to facilitate the cooling protection of each spray gun and prolong the service life of each spray gun, as shown in fig. 1 and 11, a first cooling pipe 16 is connected in series to the horizontal section of the first spray gun 1, the first cooling pipe 16 is located at one side of the spray gun fixing plate 3, and the axis of the first cooling pipe 16 is perpendicular to the axis of the horizontal section of the first spray gun 1. A second cooling pipe 24 is connected in series on the horizontal section of the second spray gun 2, the second cooling pipe 24 is positioned on one side of the spray gun fixing plate 3, and the axial direction of the second cooling pipe 24 is vertical to the axial direction of the horizontal section of the second spray gun 2.

When in use, the first cooling pipe 16 and the second cooling pipe 24 are respectively connected with the respective cooling systems, and the cooling medium can be selected from nitrogen or compressed air. Because the interior of the kiln body 9 is in a high-temperature state, when fuel is not required to be supplied to each spray gun, a cooling medium can be supplied through the first cooling pipe 16 and the second cooling pipe 24 to cool each spray gun, so that a certain protection effect is achieved, and because the amount of the cooling medium is small relative to the whole kiln chamber, the heat storage of the kiln chamber is not influenced. Of course, the first cooling pipe 16 and the second cooling pipe may be connected to the fuel system as needed.

Generally, in order to facilitate connection of each pipe to a pipe of a fuel system or a cooling system, a first connection flange 111 and a second connection flange 211 are fixed to an inlet end of the first spray gun 1 and an inlet end of the second spray gun 2, respectively, and a third connection flange 161 and a fourth connection flange 241 are fixed to end portions of the first cooling pipe 16 and the second cooling pipe 24, respectively.

In conclusion, the spray gun device in the embodiment can form various working condition combinations according to the existing fuel and lime kiln process requirements of enterprises, meet the requirements of users on using different fuels, and realize high-efficiency production; when fuel is not needed to be supplied to each spray gun, cooling media can be input into the first cooling pipe 16 and the second cooling pipe 24 through the cooling system, and cooling protection can be achieved for each spray gun; and each spray gun in the kiln body 9 can be effectively protected for a long time, and the service life of each spray gun is prolonged. Therefore, the spray gun device can realize high-efficiency production and self-cooling and self-protection, and meets the requirements of users on using different fuels.

Further, the embodiment also provides a lime kiln, which comprises a kiln body 9 with a kiln chamber, wherein a plurality of spray gun devices are fixed at intervals in the circumferential direction of the kiln body 9, the spray gun fixing plate 3 is fixedly connected with the side wall of the kiln body 9, one side of the spray gun fixing plate 3 faces the outside of the kiln chamber, the other side of the spray gun fixing plate 3 faces the inside of the kiln chamber, and the outlet end of the first spray gun 1 is positioned in the kiln chamber.

Generally, a plurality of spray gun devices are uniformly distributed at intervals in the circumferential direction of the kiln body 9, and the lime kiln in the embodiment can improve the combustion effect, improve the utilization rate of the lime kiln and meet the requirements of high-efficiency and high-quality production by being provided with the spray gun devices.

Further, in order to facilitate the fixing of the lance fixing plate 3 and the side wall of the kiln body 9, as shown in fig. 1 and 2, a plurality of through holes 91 are formed in the side wall of the kiln body 9 at intervals along the circumferential direction thereof, and a kiln body flange 92 is fixed on the outer wall of the kiln body 9 at a position corresponding to each through hole 91. The spray gun fixing plate 3 is a spray gun mounting flange and is fixedly connected with a corresponding kiln body flange 92, and the horizontal section of the first spray gun 1 penetrates through the through hole 91.

Specifically, the mounting flange of the general spray gun is a plate-type flange, the kiln body flange 92 is a flange with a neck, the neck of the kiln body flange 92 is welded and fixed with the outer wall of the kiln body 9, the flange plate of the kiln body flange 92 is fixedly connected with the mounting flange of the spray gun through a second flange bolt 94 and a second flange nut 93, and the spray gun protective cover 7 is welded and fixed with the inner wall of the kiln body 9. In the first connection mode, the horizontal segment of the second lance 2 also passes through the through hole 91.

The above are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention. Any equivalent changes and modifications that can be made by one skilled in the art without departing from the spirit and principles of the invention should fall within the protection scope of the invention.

Claims (19)

1. A spray gun device is characterized by comprising a first spray gun, a second spray gun and a spray gun fixing plate;

a lower mounting hole is formed in the spray gun fixing plate, and the first spray gun can be inserted into the lower mounting hole in a sealing and sliding manner; the inlet end of the first spray gun is positioned at one side of the spray gun fixing plate, and the outlet end of the first spray gun is positioned at the other side of the spray gun fixing plate;

the second spray gun is connected with the first spray gun in series, and the connection point of the second spray gun and the first spray gun is positioned on one side of the spray gun fixing plate or the other side of the spray gun fixing plate.

2. A lance arrangement as claimed in claim 1,

the spray gun fixing plate is vertically arranged, the first spray gun and the second spray gun are both in an inverted L shape, and the horizontal section of the first spray gun is positioned right below the horizontal section of the second spray gun; the horizontal section of the first spray gun can be horizontally inserted into the lower mounting hole in a sealing and sliding manner, and the vertical section of the second spray gun is connected with the first spray gun in series.

3. A lance arrangement as claimed in claim 2,

the inlet end of the second spray gun is positioned at one side of the spray gun fixing plate, and the outlet end of the second spray gun is positioned at the other side of the spray gun fixing plate; the inner diameter of the first spray gun is larger than the outer diameter of the second spray gun, the vertical section of the second spray gun is coaxially inserted and fixed in the vertical section of the first spray gun, and the outlet end of the second spray gun is flush with the outlet end of the first spray gun in the vertical position;

the spray gun fixing plate is further provided with upper mounting holes, the upper mounting holes and the lower mounting holes are arranged at intervals from top to bottom, and the horizontal section of the second spray gun can be horizontally inserted into the upper mounting holes in a sealing and sliding manner.

4. A lance arrangement as claimed in claim 2,

the second spray gun is positioned on one side of the spray gun fixing plate, the vertical section of the second spray gun is vertically inserted and fixed on the horizontal section of the first spray gun, and the outlet end of the second spray gun is communicated with the inside of the first spray gun.

5. A lance arrangement as claimed in claim 2,

at least two adjusting studs are uniformly arranged on the outer side of the horizontal section of the first spray gun at intervals along the circumferential direction of the horizontal section, a preset gap is reserved between each adjusting stud and the outer wall of the first spray gun, and the adjusting studs are positioned between the inlet end of the first spray gun and the spray gun fixing plate;

the horizontal section of the first spray gun is provided with an adjusting flange which is fixedly sleeved between the inlet end of the first spray gun and the spray gun fixing plate, the first end of the adjusting stud is fixedly connected with the spray gun fixing plate, and the second end of the adjusting stud is fixedly connected with the adjusting flange through an adjusting nut.

6. A lance arrangement as claimed in claim 5,

the adjusting flange comprises a first adjusting flange and a second adjusting flange, the first adjusting flange is sleeved on the horizontal section of the first spray gun and is fixedly connected with the second end of the adjusting stud through the adjusting nut; the second adjusting flange is formed by enclosing at least two arc-shaped plates, an annular clamping groove is formed in the outer wall of the horizontal section of the first spray gun, the arc-shaped plates are clamped in the annular clamping groove, and each arc-shaped plate is fixedly connected with the first adjusting flange.

7. A lance arrangement as claimed in claim 5,

a first sealing flange is sleeved on the horizontal section of the first spray gun at a preset gap between the adjusting stud and the outer wall of the first spray gun at intervals, and the first sealing flange is fixedly connected with the spray gun fixing plate; the interval between the inner wall of first sealing flange and the outer wall of first spray gun is formed with first annular seal space endotheca is equipped with first sealing member.

8. A lance arrangement as claimed in claim 7,

the first sealing flange is a necked flange, the neck of the first sealing flange is inserted into the lower mounting hole and is welded and fixed, and a first limiting convex ring with reduced diameter is formed by inwards protruding the end part of the neck of the first sealing flange far away from the flange plate;

a first compression flange is sleeved on the horizontal section of the first spray gun and positioned between the adjusting flange and the first sealing flange, the first compression flange is a neck flange, and the first compression flange is fixedly connected with the first sealing flange; the neck of the first pressing flange extends into the space between the inner wall of the first sealing flange and the outer wall of the first spray gun, a first preset installation distance is reserved between the neck of the first pressing flange and the outer wall of the first spray gun, and an annular area formed by the first preset installation distance forms the first annular sealing space.

9. A lance arrangement as claimed in claim 3,

a second sealing flange is sleeved on the horizontal section of the second spray gun at a spacing position between the inlet end of the second spray gun and the spray gun fixing plate, and the second sealing flange is fixedly connected with the spray gun fixing plate; and a second annular sealing space is formed between the inner wall of the second sealing flange and the outer wall of the second spray gun at intervals, and a second sealing element is sleeved in the second annular sealing space.

10. A lance arrangement as claimed in claim 9,

the second sealing flange is a neck flange, the neck of the second sealing flange is inserted into the upper mounting hole and is welded and fixed, and a second limiting convex ring with the reduced diameter is formed in the position, far away from the end part of the flange plate, of the neck of the second sealing flange in an inward protruding mode;

a second compression flange is sleeved on the horizontal section of the second spray gun and positioned between the inlet end of the second spray gun and the second sealing flange, the second compression flange is a neck flange, and the second compression flange is fixedly connected with the second sealing flange; the neck of the second pressing flange extends into the space between the inner wall of the second sealing flange and the outer wall of the second spray gun, a second preset installation distance is reserved between the neck of the second pressing flange and the second limiting convex ring, and an annular area formed by the second preset installation distance forms a second annular sealing space.

11. A lance arrangement as claimed in claim 2,

a spray gun protection cover is fixed on the other side of the spray gun fixing plate, and the spray gun protection cover is of a box-type structure with an opening at the bottom; the first spray gun is located the part of spray gun fixed plate opposite side is located in the spray gun safety cover, just first spray gun exit end by the bottom of spray gun safety cover stretches out.

12. The spray gun apparatus of claim 11,

the spray gun safety cover is enclosed to close by roof and three curb plate and constitutes, and three the upper end of curb plate is higher than the roof, three the curb plate is higher than the roof the part of roof with form the top recess between the top surface of roof.

13. The spray gun apparatus of claim 11,

the bottom of the spray gun protective cover is fixedly provided with a horizontally arranged supporting bottom plate, a through hole is formed in the supporting bottom plate, the through hole is a long round hole, and the vertical section of the first spray gun penetrates out of the through hole.

14. A lance arrangement as claimed in claim 13,

an arc supporting plate is arranged under the horizontal section of the first spray gun, the arc supporting plate is positioned on the other side of the spray gun fixing plate, the top surface of the arc supporting plate is tightly attached to the outer wall of the first spray gun, and the arc supporting plate is fixedly connected with the supporting base plate through a longitudinal supporting plate.

15. A lance arrangement as claimed in claim 2,

a first cooling pipe is connected in series on the horizontal section of the first spray gun, the first cooling pipe is positioned on one side of the spray gun fixing plate, and the axis of the first cooling pipe is vertical to the axis of the horizontal section of the first spray gun; and a second cooling pipe is connected in series on the horizontal section of the second spray gun, the second cooling pipe is positioned on one side of the spray gun fixing plate, and the axial direction of the second cooling pipe is perpendicular to the axial direction of the horizontal section of the second spray gun.

16. A lance arrangement as claimed in claim 15,

and a first connecting flange and a second connecting flange are respectively fixed at the inlet end of the first spray gun and the inlet end of the second spray gun, and a third connecting flange and a fourth connecting flange are respectively fixed at the end parts of the first cooling pipe and the second cooling pipe.

17. A lance arrangement as claimed in claim 2,

the first spray gun comprises a first horizontal pipe, a first transition pipe and a first vertical pipe which are sequentially connected from an inlet end to an outlet end of the first spray gun, the first horizontal pipe and the first vertical pipe are respectively a horizontal section and a vertical section of the first spray gun, one end of the first horizontal pipe, far away from the first transition pipe, is used as the inlet end of the first spray gun, and one end of the first vertical pipe, far away from the first transition pipe, is used as the outlet end of the first spray gun;

the second spray gun comprises a second horizontal pipe, a second transition pipe and a second vertical pipe which are sequentially connected from an inlet end to an outlet end of the second spray gun, the second horizontal pipe and the second vertical pipe are respectively a horizontal section and a vertical section of the second spray gun, one end, far away from the second transition pipe, of the second horizontal pipe serves as the inlet end of the second spray gun, and one end, far away from the second transition pipe, of the second vertical pipe serves as the outlet end of the second spray gun.

18. A lime kiln is characterized by comprising a kiln body with a kiln chamber;

a plurality of spray gun devices as claimed in any one of claims 1 to 17 are fixed at intervals in the circumferential direction of the kiln body, the spray gun fixing plate is fixedly connected with the side wall of the kiln body, one side of the spray gun fixing plate faces the outside of the kiln chamber, the other side of the spray gun fixing plate faces the inside of the kiln chamber, and the outlet end of the first spray gun is positioned in the kiln chamber.

19. The lime kiln of claim 18,

a plurality of through holes are formed in the side wall of the kiln body at intervals along the circumferential direction of the kiln body, and a kiln body flange is fixed on the outer wall of the kiln body at a position corresponding to each through hole; the spray gun fixing plate is a spray gun mounting flange and is fixedly connected with the corresponding kiln body flange, and the horizontal section of the first spray gun penetrates through the through hole.

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