Descaling device for annular channel of lime kiln

Abstract

The utility model belongs to the technical field of auxiliary devices for lime production, and particularly discloses a descaling device for an annular channel of a lime kiln, which comprises an annular pipe, a first pipeline communicated with the annular pipe, a first air compressor communicated with the first pipeline and a plurality of branch pipes communicated with the annular pipe, and each branch pipe penetrates through an upper-layer workbench of a kiln body. Each branch pipe is located over the corresponding fire pulling hole, each branch pipe is communicated with a hose, and each hose is communicated with an air blowing pipe. In the prior art, the cleaning time is long when ash in an annular channel of a lime kiln is cleaned, and the temperature in the kiln body is greatly lost. The annular pipe is arranged on the upper-layer workbench of the lime kiln, compressed air is introduced into the annular pipe, the branch pipes on the annular pipe correspond to the fire pulling holes in a one-to-one mode and are located over the fire pulling holes respectively, one end of each branch pipe is communicated with the hose, the hose is communicated with the air blowing pipe, the air blowing pipe extends into the fire pulling holes, and the fire pulling holes are formed in the upper-layer workbench of the lime kiln. And compressed air is utilized to purge ash in the annular channel.

Description

Technical Field

[0001] The utility model relates to the technical field of auxiliary devices for lime production, in particular to a descaling device for an annular channel of a lime kiln. Background Art

[0002] The Maerz lime kiln, also known as a parallel flow regenerative lime kiln, is an advanced lime production facility featuring two connected kiln chambers, with heat exchange between them via a connecting channel. Its operating principle is as follows: ore is alternately loaded into the two chambers, with fuel introduced from the upper chambers of each chamber. Multiple lances located at the bottom of the preheating zone evenly distribute the fuel across the entire cross-section of the chamber, ensuring uniform calcination of the raw ore. Combustion air is introduced from the top of the shaft kiln and preheated in the preheating zone before mixing with the fuel. The calcining flame then flows through the calcining zone, co-currently with the ore, calcining the ore. Exhaust gases are discharged through the channel connecting the two chambers, along the preheating zone of the other chamber, and toward the kiln roof.

[0003] In the center of a Maerz lime kiln, there's a circular channel formed by several interconnected fire holes and corbel structures. During production, a large amount of ash accumulates in this channel. Under the constant high temperatures, this ash easily forms a hard ash mass. To ensure unimpeded airflow within the kiln, personnel must regularly clean it.

[0004] Prior art tools for cleaning ash deposits from annular channels consist of a hammer and a sharpened steel pipe. To do this, the stone pier covering the fire extraction hole is removed, and the head of the steel pipe is inserted through the hole into the annular channel, bringing it into contact with the ash deposit. The hammer is then used to repeatedly strike the rear end of the pipe to remove the ash deposits. However, in practice, the heavy weight of the steel pipe makes cleaning extremely inconvenient and time-consuming. Cleaning the channel corresponding to a single fire extraction hole alone can take approximately 20 minutes. This prolonged cleaning process results in a significant loss of kiln temperature, negatively impacting product quality. Utility Model Content

[0005] The utility model aims to provide a descaling device for an annular channel of a lime kiln, so as to solve the problem that the cleaning time is long and the temperature in the kiln body is greatly lost when cleaning the ash in the annular channel of the lime kiln.

[0006] To achieve the above-mentioned purpose, the basic solution provided by the utility model is: a descaling device for an annular channel of a lime kiln, comprising an annular pipe, the annular pipe being connected to a pipe 1, the other end of the pipe 1 being connected to an air compressor 1, the annular pipe, the pipe 1 and the air compressor 1 being all located on the upper workbench of the kiln body, the annular pipe being connected to a plurality of branch pipes, each branch pipe passing through the upper workbench of the kiln body, each branch pipe corresponding one-to-one to a plurality of fire extraction holes, each fire extraction hole being located on the lower workbench of the kiln body, each branch pipe being located directly above each fire extraction hole, each branch pipe being connected to a hose, each hose being connected to an air blowing pipe, and the fire extraction holes being covered with stone piers.

[0007] The principle and beneficial effects of the present utility model are as follows: a ring pipe is provided on the upper workbench of a lime kiln, with each branch pipe corresponding to each fire extraction hole and located directly above each fire extraction hole. One end of the branch pipe is connected to a hose, which in turn is connected to an air blow pipe. When ash accumulation in the annular channel needs to be cleared, the stone block above the fire extraction hole is removed, and the air blow pipe is inserted into the fire extraction hole to clear the ash accumulation in the annular channel. The arrangement of the ring pipe, branch pipe, hose, and air blow pipe facilitates the quick and efficient removal of ash accumulation in the annular channel by removing the stone block covering the fire extraction hole, thereby reducing the time required for clearing ash accumulation and thus reducing temperature loss in the kiln. The provision of the hose allows the operator to freely adjust the position of the blow pipe according to the location of the ash accumulation when clearing ash accumulation in the annular channel. Because the annular channel typically maintains a high temperature of approximately 850-1000 degrees Celsius, an air blow pipe made of high-temperature resistant material is provided and inserted into the fire extraction hole to clear the ash accumulation in the annular channel.

[0008] Option 2, which is the preferred option of the basic option, is to install a ball valve on each branch pipe. The ball valve can be used to adjust the flow rate of the compressed air.

[0009] Option 3, which is the preferred option of the basic option, has a quick connector 1 at the connection between each branch pipe and the hose, and a quick connector 2 at the connection between each hose and the air pipe. The provision of quick connectors 1 and 2 facilitates quick replacement of the hose or air pipe when necessary.

[0010] Option 4, which is the preferred option of the basic option, uses PU tubes for each hose. PU tubes have good temperature resistance and are suitable for the high temperature environment of the fire extraction hole.

[0011] Option 5, the preferred alternative to the basic option, features an air cannon connected to Pipe 1. The air cannon's air inlet is connected to a solenoid valve, one end of which is connected to Air Compressor 2. The air cannon, solenoid valve, and Air Compressor 2 are all located on the upper workbench of the kiln. The air cannon enhances the compressed air's strength to remove stubborn ash buildup within the annular channel when compressed air alone is insufficient.

[0012] Option 6, the preferred option of the basic option, has a reducing nozzle at the output end of each air blowing pipe. The reducing nozzle can increase the flow rate of the compressed air by reducing the diameter of the output end. The setting of the reducing nozzle makes it easier to blow the annular channel with stronger wind force to clear the dust accumulation. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 The present invention is a structural diagram of a descaling device for a lime kiln annular channel;

[0014] Figure 2 This is a schematic diagram of the structure of the fire extraction hole and kiln body of a descaling device for the annular channel of a lime kiln;

[0015] Figure 3 This is a structural diagram of a branch pipe, a ball valve, a quick connector 1, a hose, a quick connector 2, an air blowing pipe, and a reducing nozzle for a lime kiln annular channel descaling device;

[0016] Figure 4 The diagram is a top view of a descaling device for a lime kiln annular channel. DETAILED DESCRIPTION

[0017] The present invention is further described in detail below through specific implementation methods:

[0018] The reference numerals in the drawings of the specification include: annular pipe 1, pipeline 2, air compressor 3, branch pipe 4, fire extraction hole 5, hose 6, air blow pipe 7, ball valve 8, quick connector 1 9, quick connector 2 10, air cannon 11, solenoid valve 12, air compressor 2 13, variable diameter nozzle 14, kiln body 15, stone pier 16.

[0019] Example

[0020] like Figures 1 to 4 As shown: A descaling device for an annular channel of a lime kiln, comprising an annular pipe 1, connected to a pipe 2, the other end of which is connected to an air compressor 3, the annular pipe 1, the pipe 2 and the air compressor 3 are all located on the upper workbench of a kiln body 15, the pipe 2 is connected to an air cannon 11, the air inlet end of the air cannon 11 is connected to a solenoid valve 12, one end of the solenoid valve 12 is connected to an air compressor 2 13, the air cannon 11, the solenoid valve 12 and the air compressor 2 13 are all located on the upper workbench of the kiln body 15.

[0021] The ring pipe 1 is connected to several branch pipes 4, each branch pipe 4 runs through the upper workbench of the kiln body 15, each branch pipe 4 corresponds to several fire-pulling holes 5, each fire-pulling hole 5 is located on the lower workbench of the kiln body 15, each branch pipe 4 is located directly above each fire-pulling hole 5, each branch pipe 4 is connected to a hose 6, each hose 6 is connected to an air blowing pipe 7, the fire-pulling hole 5 is covered with a stone pier 16, each branch pipe 4 is provided with a ball valve 8, each branch pipe 4 is connected to a quick connector 9 at the connection between each branch pipe 4 and the hose 6, each hose 6 is connected to a quick connector 2 10 at the connection between the hose 6 and the air blowing pipe 7, each hose 6 is a PU tube, and the output end of each air blowing pipe 7 is connected to a reducing nozzle 14.

[0022] The implementation method of this embodiment is as follows:

[0023] When it is necessary to clean the ash accumulation in the annular channel through the fire extraction hole 5, first turn on the air compressor 3, and the air compressor 3 will pass compressed air into the annular pipe 1 through the pipe 2. Then the compressed air will pass into the branch pipe 4. Then the stone pier 16 will be moved away to expose the fire extraction hole 5. Then the ball valve 8 will be opened. The operator will hold the hose 6 and one end of the air blowing pipe 7 and extend the air blowing pipe 7 into the fire extraction hole 5. The compressed air will flow through the quick connector 9, the hose 6, the quick connector 2 10, the air blowing pipe 7 and the reducing nozzle 14 in sequence, and finally enter the annular channel.

[0024] When the ash deposits in the annular channel are stubborn and cannot be effectively cleared by compressed air alone, first turn on the air compressor 2 13, then open the solenoid valve 12, and then the air cannon 11 to introduce compressed air with strong impact force into the pipe 1 2. The compressed air flows through the branch pipe 4, quick connector 1 9, hose 6, quick connector 2 10, blowing pipe 7 and reducing nozzle 14 in sequence, and finally enters the annular channel.

[0025] The above is only an embodiment of the present invention, and the commonly known specific structures and characteristics of the scheme are not described in detail here. It should be pointed out that for those skilled in the art, several modifications and improvements can be made without departing from the structure of the present invention, and these should also be regarded as the scope of protection of the present invention. These will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection claimed by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A descaling device for a lime kiln annular channel, characterized in that: The invention comprises an annular pipe (1), wherein the annular pipe (1) is connected to a pipe (2), and the other end of the pipe (2) is connected to an air compressor (3). The annular pipe (1), the pipe (2) and the air compressor (3) are all located on the upper workbench of the kiln body (15). The annular pipe (1) is connected to a plurality of branch pipes (4), each of the branch pipes (4) runs through the upper workbench of the kiln body (15), each of the branch pipes (4) corresponds to a plurality of fire extraction holes (5), each of the fire extraction holes (5) is located on the lower workbench of the kiln body (15), each of the branch pipes (4) is located directly above each fire extraction hole (5), each of the branch pipes (4) is connected to a hose (6), each of the hoses (6) is connected to an air blowing pipe (7), and the fire extraction holes (5) are covered with a stone pier (16).

2. A descaling device for a lime kiln annular channel according to claim 1, characterized in that: Each branch pipe (4) is provided with a ball valve (8).

3. A descaling device for a lime kiln annular channel according to claim 1, characterized in that: Each connection between the branch pipe (4) and the hose (6) is provided with a first quick connector (9), and each connection between the hose (6) and the air blowing pipe (7) is provided with a second quick connector (10).

4. A descaling device for a lime kiln annular channel according to claim 1, characterized in that: Each of the hoses (6) is a PU tube.

5. A descaling device for a lime kiln annular channel according to claim 1, characterized in that: The pipe 1 (2) is connected to an air cannon (11), the air inlet end of the air cannon (11) is connected to a solenoid valve (12), one end of the solenoid valve (12) is connected to an air compressor 2 (13), and the air cannon (11), the solenoid valve (12) and the air compressor 2 (13) are all located on the upper workbench of the kiln body (15).

6. A descaling device for a lime kiln annular channel according to claim 1, characterized in that: The output end of each of the air blowing pipes (7) is provided with a variable diameter nozzle (14).

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