Structure for prolonging service life of spray gun of double-chamber kiln

Abstract

The utility model discloses a structure for prolonging the service life of a double-chamber kiln spray gun, and belongs to the technical field of lime kiln equipment. A structure for prolonging the service life of a double-chamber kiln spray gun comprises a cooling air pipeline arranged on the outer side of a spray gun fuel pipeline, the end, close to an outlet of the spray gun fuel pipeline, of the cooling air pipeline is of an opening structure, and the side, away from the opening of the spray gun fuel pipeline, of the cooling air pipeline is communicated with a cooling air inlet pipe. A cooling air check valve is arranged on the cooling air inlet pipe; the utility model has the advantages of prolonging the service life of the fuel pipeline of the spray gun and improving the energy utilization rate.

Description

TECHNICAL FIELD

[0001] The utility model relates to lime kiln equipment technical field especially relates to a structure of improving the service life of double chamber kiln spray gun. BACKGROUND

[0002] Double chamber kiln is also called double chamber parallel flow regenerative lime kiln, fuel is fed from the upper end of the calcining zone, and flows parallel to the raw material, since the fuel is injected from the upper part of the calcining zone, the raw material can absorb most of the heat released by the fuel at this point, and the average temperature of the calcining zone is 950 DEG C, another important feature of the double chamber kiln is heat storage, which preheats a part of combustion air by using heat storage, and the thermal characteristics of parallel calcination and counterflow heat storage determine that the double chamber kiln has high thermal efficiency, and its thermal energy consumption is lower than all types of lime kilns such as rotary kiln and sleeve kiln.

[0003] The existing domestic lime double chamber vertical kiln is prone to burnout, ablation and shortening of the spray gun during use, which affects the sintering quality of lime and causes the kiln shell to deform in severe cases, and the replacement cost of the spray gun is high. UTILITY MODEL CONTENT

[0004] The utility model discloses a structure of improving the service life of double chamber kiln spray gun to solve the problem that the existing spray gun used in the lime double chamber vertical kiln is prone to burnout and damage.

[0005] In order to realize the above-mentioned purpose, the utility model adopts the following technical scheme:

[0006] A structure of improving the service life of double chamber kiln spray gun, including the cooling air pipe that sets up at the outside of spray gun fuel pipeline, the one end of cooling air pipe is open structure close to the outlet of spray gun fuel pipeline.

[0007] Further, the cooling air pipe is communicated with the cooling air inlet pipe on the side away from the opening of the spray gun fuel pipe, and the cooling air check valve is arranged on the cooling air inlet pipe.

[0008] Further, the outer side of the cooling air pipe is provided with a wear-resistant protective sleeve, and the wear-resistant protective sleeve is located at the one end of the cooling air pipe close to the opening of the spray gun fuel pipe.

[0009] Further, the wear-resistant protective sleeve and the cooling air pipe are detachably connected.

[0010] Further, the wear-resistant protective sleeve comprises a plurality of main sleeve pipes, the plurality of main sleeve pipes are coaxially arranged with the spray gun fuel pipe, and the plurality of main sleeve pipes are tightly attached together.

[0011] Further, the wear-resistant protective sleeve comprises a stopper and a threaded sleeve respectively located at two ends, the two ends of the main sleeve are respectively abutted with the stopper and the threaded sleeve, the stopper is located at one end of the cooling air pipe far away from the opening, and the threaded sleeve is located at one end of the cooling air pipe close to the opening.

[0012] Further, one end of the cooling air pipe close to the opening is provided with external threads, and the threaded sleeve comprises a ceramic outer pipe and an internally-threaded pipe sleeved on the outer wall of the ceramic outer pipe, and the inner wall of the ceramic outer pipe is provided with internal threads corresponding to the external threads.

[0013] Compared with the prior art, the structure for prolonging the service life of the double-chamber kiln spray gun has the following beneficial effects:

[0014] The structure for prolonging the service life of the double-chamber kiln spray gun has the following beneficial effects:

[0015] Other advantages, objects and features of the present application will be set forth in part in the following description, and in part will become apparent to those skilled in the art upon examination of the following or can be learned from practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a schematic view of the main structure of the present application in the front direction of view;

[0017] Figure 2 It is a schematic view of the main structure of the present application in the front direction of view; Figure 1 It is an enlarged schematic view of the structure of part A of the present application;

[0018] Figure 3 It is an enlarged schematic view of the structure of part B of the present application in the front direction of view;

[0019] Figure 4 It is a schematic view of the main structure of the threaded pipe sleeve of the present application in the front direction of view.

[0020] In the drawings:

[0021] 1, spray gun fuel pipe; 2, cooling air pipe; 3, cooling air inlet pipe; 4, cooling air check valve; 5, wear-resistant protective sleeve; 501, main sleeve; 502, stopper; 503, threaded sleeve; 504, ceramic outer pipe; 505, internally-threaded pipe. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments.

[0023] With reference to Figures 1-4 The utility model discloses a structure for improving service life of double hearth kiln spray gun, including the cooling air pipe 2 of fixed installation on the outside of spray gun fuel pipeline 1, spray gun fuel pipeline 1 is used to deliver fuel to the double hearth kiln for burning, and cooling air pipe 2 is wrapped in the outside of spray gun fuel pipeline 1, and with spray gun fuel pipeline 1 coaxial arrangement, when using, the high-speed normal temperature compressed air is passed into cooling air pipe 2, forms cooling air, is used for the cooling of spray gun fuel pipeline 1 (spray gun pipe), avoids the damage caused by the temperature of spray gun fuel pipeline 1 during use being too high.

[0024] The end of cooling air pipe 2 close to the outlet of spray gun fuel pipeline 1 is open structure, the cooling air that passes into cooling air pipe 2 is cooled spray gun fuel pipeline 1 at the same time, also is heated by spray gun fuel pipeline 1, then is sprayed from the opening of cooling air pipe 2, as combustion-supporting air mixes together with the fuel that spray gun fuel pipeline 1 sprays and burns.

[0025] The end of cooling air pipe 2 far from the opening of spray gun fuel pipeline 1 side surface is communicated with cooling air inlet pipe 3, one end of cooling air inlet pipe 3 is communicated with cooling air pipe 2, the other end is communicated with external air source, cooling air check valve 4 is installed on cooling air inlet pipe 3, and the opening and closing of cooling air inlet pipe 3 are controlled through cooling air check valve 4.

[0026] The outside of cooling air pipe 2 is installed with wear-resistant protective sleeve 5, wear-resistant protective sleeve 5 is made of mullite ceramic, has wear resistance and high temperature resistance, and wear-resistant protective sleeve 5 is located on the end of cooling air pipe 2 close to the opening of spray gun fuel pipeline 1, the end of cooling air pipe 2 close to the opening of spray gun fuel pipeline 1 is located inside the double hearth kiln during use, and the temperature is higher, and the wear-resistant protective sleeve 5 made of mullite ceramic has low thermal conductivity, which is used to further reduce the temperature of cooling air pipe 2 and spray gun fuel pipeline 1.

[0027] Wear-resistant protective sleeve 5 and cooling air pipe 2 are detachably connected, so that when cooling air pipe 2 is damaged, it can be replaced in time, thereby ensuring the cooling effect of spray gun fuel pipeline 1.

[0028] The wear-resistant protective sleeve 5 comprises a plurality of main sleeve pipes 501, which are straight cylinder structures with both ends open, are coaxially arranged with the lance fuel pipeline 1, are tightly attached together, are sleeved on the outside of the lance fuel pipeline 1, and are filled with refractory material between adjacent main sleeve pipes 501 and between the main sleeve pipes 501 and the cooling air pipeline 2, so as to block the gaps between the adjacent main sleeve pipes 501 and between the main sleeve pipes 501 and the cooling air pipeline 2, and reduce the hot air entering the inside of the main sleeve pipes 501 and the cooling air pipeline 2 from the gaps.

[0029] The wear-resistant protective sleeve 5 comprises a stopper 502 and a threaded sleeve 503 respectively located at both ends, the two ends of the main sleeve pipes 501 are respectively abutted against the stopper 502 and the threaded sleeve 503, the stopper 502 is located at the end of the cooling air pipeline 2 far away from the opening and is fixedly connected with the cooling air pipeline 2, the threaded sleeve 503 is located at the end of the cooling air pipeline 2 close to the opening and is detachably connected with the cooling air pipeline 2, during installation, the main sleeve pipes 501 are sleeved on the cooling air pipeline 2 one by one and abut against the stopper 502, and finally the threaded sleeve 503 is screwed to fix the main sleeve pipes 501 on the cooling air pipeline 2.

[0030] The end of the cooling air pipeline 2 close to the opening is processed with external threads, the threaded sleeve 503 comprises a ceramic outer pipe 504 and an inner threaded pipe 505 sleeved on the outer wall of the ceramic outer pipe 504, the inner wall of the ceramic outer pipe 504 is provided with inner threads corresponding to the external threads, and the threaded sleeve 503 is screwed on the end of the cooling air pipeline 2 through the inner threads and the external threads.

[0031] Working principle: during use, the fuel is sent into the double-muffle kiln through the lance fuel pipeline 1, and at the same time, the cooling air check valve 4 is opened, the high-pressure airflow enters the cooling air pipeline 2 from the cooling air inlet pipe 3, takes away the heat on the surface of the lance fuel pipeline 1, and the heated cooling air is discharged from the opening of the cooling air pipeline 2 to serve as combustion-supporting air and burn together with the fuel.

[0032] At the same time, the part of the lance fuel pipeline 1 located in the double-muffle kiln is wrapped with the wear-resistant protective sleeve 5 to further reduce the temperature of the part.

[0033] The above merely describes the preferred specific implementation of the present application, but the protection scope of the present application is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

[0034] In the description of the present specification, the description referring to the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. Furthermore, the person skilled in the art can combine and combine the different embodiments or examples described in the present specification and the features of the different embodiments or examples, without contradiction.

[0035] Although the embodiments of the present application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present application, and the person skilled in the art can make changes, modifications, replacements and modifications to the above embodiments within the scope of the present application.

Claims

1. A structure for improving the service life of a double-chamber kiln spray lance, characterized in that, It includes a cooling air duct (2) located outside the fuel pipe (1) of the spray gun, the cooling air duct (2) having an open structure at one end near the outlet of the fuel pipe (1); a wear-resistant protective sleeve (5) is provided on the outside of the cooling air duct (2), the wear-resistant protective sleeve (5) being located at one end of the cooling air duct (2) near the opening of the fuel pipe (1).

2. The structure for improving the service life of a double-chamber kiln spray gun according to claim 1, characterized in that, The cooling air duct (2) is connected to a cooling air inlet pipe (3) on the side away from the opening of the spray gun fuel duct (1), and a cooling air check valve (4) is provided on the cooling air inlet pipe (3).

3. The structure for improving the service life of a double-chamber kiln spray lance according to claim 1, characterized in that, The wear-resistant protective sleeve (5) and the cooling air duct (2) are detachably connected.

4. The structure for improving the service life of a double-chamber kiln spray lance according to claim 1, characterized in that, The wear-resistant protective sleeve (5) includes multiple main sleeves (501), which are coaxially arranged with the fuel pipeline (1) of the spray gun, and the multiple main sleeves (501) are tightly fitted together.

5. The structure for improving the service life of a double-chamber kiln spray gun according to claim 4, characterized in that, The wear-resistant protective sleeve (5) includes a stop block (502) and a threaded sleeve (503) located at both ends. The two ends of the main sleeve (501) abut against the stop block (502) and the threaded sleeve (503) respectively. The stop block (502) is located at the end of the cooling air duct (2) away from the opening, and the threaded sleeve (503) is located at the end of the cooling air duct (2) near the opening.

6. The structure for improving the service life of a double-chamber kiln spray gun according to claim 5, characterized in that, The cooling air duct (2) has an external thread at one end near the opening. The threaded sleeve (503) includes a ceramic outer tube (504) and an internal threaded tube (505) sleeved on the outer wall of the ceramic outer tube (504). The inner wall of the ceramic outer tube (504) has an internal thread corresponding to the external thread.

Images