Chain grate furnace denitration spray gun with filtering function

Abstract

The utility model relates to the technical field of chain-grate boilers, in particular to a chain-grate boiler denitration spray gun with a filtering function, which saves manpower, reduces the frequency of personnel in contact with dangerous sources, improves the working efficiency, and ensures that emission data meet the environmental protection requirement on the premise of realizing safety production. Comprising a Y-shaped filter, a denitration spray gun, an agent tank, a solution pre-stirring barrel, an automatic liquid level meter, an agent conveying pump, a transmission device and a stirrer, the Y-shaped filter is installed at the solution inlet end of the denitration spray gun, the denitration spray gun is connected with the agent tank through a pipeline, the agent tank is connected with the solution pre-stirring barrel, the agent conveying pump is arranged between the agent tank and the solution pre-stirring barrel, and the agent tank is additionally provided with the automatic liquid level meter. A transmission device is arranged at the upper part of the pre-stirring tank, and the output end of the transmission device is connected with the stirrer.

Description

Technical Field

[0001] The utility model relates to the technical field of chain boilers, in particular to a chain boiler destocking spray gun with a filtering function. Background Art

[0002] Chain boilers are widely used in both industrial and domestic applications due to their high degree of mechanization, high thermal efficiency, ease of operation, low labor intensity, and low smoke and dust emission concentrations. Chain boilers use chains to transmit materials, generating heat through high-temperature combustion. During the combustion process, the boilers burn different fuels, including oil, gas, and solid fuels, in separate layers to maximize fuel efficiency. According to the "Boiler Air Pollutant Emission Standard" (GB13271-2014), the nitrogen oxide emission limit for boiler flue gas is 200 mg per cubic meter for coal-fired and oil-fired boilers.

[0003] The current denitrification method for chain-grate boilers involves preparing a urea solution in a reagent tank, passing it through a pressurized injection system. The urea solution is atomized by a spray gun and then evaporates into the boiler, generating amino groups that participate in the reaction. However, in actual operation, the chain-grate boiler's denitrification spray gun system often becomes clogged with debris, requiring each gun to be cleared two or three times per shift. Each time, the operator disassembles the gun and performs cleaning and clearing operations on-site, posing safety risks such as burns and falls, and exceeding environmental performance standards, impacting boiler efficiency. Utility Model Content

[0004] (1) Technical problems solved

[0005] In response to the deficiencies of the existing technology, the utility model provides a chain furnace destocking spray gun with a filtering function, which saves manpower, reduces the frequency of personnel contact with dangerous sources, improves work efficiency, and ensures that emission data meets environmental protection requirements under the premise of achieving safe production.

[0006] (2) Technical solution

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a chain furnace desolventizing spray gun with a filtering function, comprising a Y-type filter, a desolventizing spray gun, a medicine tank, a solution pre-mixing barrel, an automatic liquid level gauge, a drug delivery pump, a transmission device, and an agitator. The Y-type filter is installed at the solution inlet end of the desolventizing spray gun, the desolventizing spray gun pipeline is connected to the medicine tank, the medicine tank is connected to the solution pre-mixing barrel, and a drug delivery pump is arranged in the middle. The medicine tank is equipped with an automatic liquid level gauge, an agitator is arranged in the solution pre-mixing barrel, and a transmission device is provided on the upper part of the pre-mixing tank, and the agitator is connected to the output end of the transmission device.

[0008] Preferably, it further includes a frequency converter, the transmission device is equipped with a frequency converter, and the frequency converter is connected to the transmission device control circuit.

[0009] Preferably, the Y-type filter includes a bracket, a Y-type through-tube, an external threaded port, an internal threaded cover, a filter basket and a top ring piece. The Y-type through-tube and the internal threaded cover are arranged in the pipeline between the de-pinning spray gun and the medicine tank. The outer side of the bottom end of the Y-type through-tube is fixed at the corresponding position through multiple groups of brackets. The inner ring side of the top end of the Y-type through-tube is connected to the bottom end of the external threaded port. The outer side of the external threaded port and the inner side of the internal threaded cover are detachably screwed. The top of the filter basket is connected to the inner ring side of the bottom end of the top ring piece. The filter basket is detachably installed inside the Y-type through-tube.

[0010] Preferably, it further comprises a screw handle, and one side of the outer end of the internal thread cover is connected to the inner side of the screw handle.

[0011] (3) Beneficial effects

[0012] Compared with the prior art, the utility model provides a chain furnace destocking spray gun with a filtering function, which has the following beneficial effects:

[0013] In the solution pre-mixing barrel, the transmission device drives the agitator to mix and dissolve urea and water to form a urea solution. The drug delivery pump is turned on to input the solution into the agent tank. The automatic liquid level meter monitors the liquid level change. When the liquid level is lower than the specified height, the drug delivery pump is automatically turned on. A Y-type filter is installed at the solution inlet of the out-of-stock spray gun to filter impurities in the urea solution. This saves manpower, reduces the frequency of personnel contact with dangerous sources, improves work efficiency, and ensures that emission data meets environmental protection requirements while achieving safe production. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 This is an axial view of the Y-type filter structure diagram of the utility model;

[0016] Figure 3 For this utility model Figure 2 Front view of

[0017] Markings in the attached figure: 1. Y-type filter; 2. Denitrification spray gun; 3. Chemical tank; 4. Solution pre-mixing barrel; 5. Automatic liquid level gauge; 6. Drug delivery pump; 7. Transmission device; 8. Agitator; 9. Frequency converter; 11. Bracket; 12. Y-type through tube; 13. External threaded port; 14. Internal threaded cover; 15. Filter frame; 16. Ring top piece; 17. Screw handle. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0019] Example

[0020] See also Figure 1-3 , a chain furnace desulfurization spray gun with a filtering function, comprising a Y-type filter 1, a desulfurization spray gun 2, a medicine tank 3, a solution pre-mixing barrel 4, an automatic liquid level gauge 5, a drug delivery pump 6, a transmission device 7, and an agitator 8. The Y-type filter 1 is installed at the solution inlet end of the desulfurization spray gun 2, the desulfurization spray gun 2 is connected to the medicine tank 3 through a pipeline, the medicine tank 3 is connected to the solution pre-mixing barrel 4, and a drug delivery pump 6 is arranged in the middle. The automatic liquid level gauge 5 is installed on the medicine tank 3, and an agitator 8 is arranged in the solution pre-mixing barrel 4. The transmission device 7 is provided on the upper part of the pre-mixing tank, and the output end of the transmission device 7 is connected to the agitator 8; in the solution pre-mixing barrel 4, the transmission device 7 drives the agitator 8 to mix and dissolve urea and water to form a urea solution, the drug delivery pump 6 is turned on to input the solution into the medicine tank 3, the automatic liquid level gauge 5 monitors the liquid level change, and automatically turns on the drug delivery pump 6 when it is lower than the specified liquid level height. The Y-type filter 1 is installed at the solution inlet end of the desulfurization spray gun 2 to filter impurities in the urea solution.

[0021] It also includes a frequency converter 9, which is installed on the transmission device 7 and connected to the control circuit of the transmission device 7; the frequency converter 9 can adjust the speed of the stirrer 8 according to actual needs, thereby improving practicality.

[0022] The Y-type filter 1 includes a bracket 11, a Y-type through-tube 12, an external threaded port 13, an internal threaded cover 14, a filter basket 15 and a top ring 16. The Y-type through-tube 12 and the internal threaded cover 14 are arranged in the pipeline between the de-pinning spray gun 2 and the medicine tank 3. The outer side of the bottom end of the Y-type through-tube 12 is fixed to the corresponding position through multiple groups of brackets 11. The inner ring side of the top end of the Y-type through-tube 12 is connected to the bottom end of the external threaded port 13. The outer side of the external threaded port 13 and the inner side of the internal threaded cover 14 are detachably screwed. The top of the filter basket 15 is connected to the top ring 16. 6 is connected to the inner ring side of the bottom end, and the filter basket 15 can be detachably installed in the Y-shaped through-tube 12; when the filter basket 15 is installed in the Y-shaped through-tube 12, the internal threaded cover 14 is screwed on the outside of the external threaded opening 13, and acts on the top ring piece 16 to clamp and fix the filter basket 15, so that the urea solution can pass through the Y-shaped through-tube 12 and be filtered by the filter basket 15. When cleaning is required, the internal threaded cover 14 is screwed on the outside of the external threaded opening 13 and then removed, and the filter basket 15 can be taken out of the Y-shaped through-tube 12.

[0023] The utility model further comprises a screwing handle 17 , and one side of the outer end of the internal thread cover 14 is connected to the inner side of the screwing handle 17 ; by gripping the screwing handle 17 , a force can be applied to rotate the internal thread cover 14 , thereby improving convenience.

[0024] In summary, when a chain furnace desolventizing spray gun with a filtering function is in use, the transmission device 7 in the solution pre-mixing barrel 4 drives the stirrer 8 to mix and dissolve urea and water to form a urea solution, the drug delivery pump 6 is turned on to input the solution into the medicine tank 3, the automatic liquid level meter 5 monitors the liquid level change, and automatically turns on the drug delivery pump 6 when it is lower than the specified liquid level height, and a Y-type filter 1 is installed at the solution inlet end of the desolventizing spray gun 2. When the filter basket 15 is installed inside the Y-shaped through-tube 12, it is screwed on the outside of the external threaded port 13 through the internal threaded cover 14, and acts on the top ring piece 16 to clamp and fix the filter basket 15. The urea solution can pass through the Y-shaped through-tube 12 and be filtered by the filter basket 15. When cleaning is required, the internal threaded cover 14 is rotated and screwed on the outside of the external threaded port 13 by holding the screw handle 17 to remove it, and then the filter basket 15 can be taken out of the Y-shaped through-tube 12. In addition, the frequency converter 9 can adjust the speed of the stirrer 8 according to actual needs to improve practicality.

[0025] The automatic liquid level meter 5, drug delivery pump 6 and transmission device 7 are well-known devices purchased directly from the market by technicians in this field. We only use them here without making any structural or functional improvements to them, so we will not go into details here.

[0026] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A chain furnace destocking spray gun with filtering function, characterized in that: The invention comprises a Y-type filter (1), a desolventizing spray gun (2), a medicine tank (3), a solution pre-mixing barrel (4), an automatic liquid level meter (5), a drug delivery pump (6), a transmission device (7), and an agitator (8). The Y-type filter (1) is installed at the solution inlet end of the desolventizing spray gun (2); a pipeline of the desolventizing spray gun (2) is connected to the medicine tank (3); the medicine tank (3) is connected to the solution pre-mixing barrel (4), and a drug delivery pump (6) is arranged in the middle; the medicine tank (3) is equipped with an automatic liquid level meter (5); the agitator (8) is arranged in the solution pre-mixing barrel (4); a transmission device (7) is arranged on the upper part of the pre-mixing barrel, and the output end of the transmission device (7) is connected to the agitator (8).

2. The chain furnace destocking spray gun with filtering function according to claim 1, characterized in that: It also includes a frequency converter (9), the transmission device (7) is equipped with the frequency converter (9), and the frequency converter (9) is connected to the control circuit of the transmission device (7).

3. The chain furnace destocking spray gun with filtering function according to claim 1, characterized in that: The Y-type filter (1) comprises a bracket (11), a Y-type through-tube (12), an external threaded port (13), an internal threaded cover (14), a filter basket (15) and a top ring piece (16). The Y-type through-tube (12) and the internal threaded cover (14) are arranged in a pipeline between the de-pinning spray gun (2) and the medicine tank (3). The outer side of the bottom end of the Y-type through-tube (12) is fixed at a corresponding position through multiple groups of brackets (11). The inner ring side of the top end of the Y-type through-tube (12) is connected to the bottom end of the external threaded port (13). The outer side of the external threaded port (13) and the inner side of the internal threaded cover (14) are detachably screwed together. The top end of the filter basket (15) is connected to the inner ring side of the bottom end of the top ring piece (16). The filter basket (15) is detachably installed inside the Y-type through-tube (12).

4. The chain furnace destocking spray gun with filtering function according to claim 3, characterized in that: It also includes a screw handle (17), and one side of the outer end of the internal thread cover (14) is connected to the inner side of the screw handle (17).

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