Steam boiler tail gas treatment device

Abstract

The utility model relates to the technical field of tail gas treatment, and discloses a steam boiler tail gas treatment device which comprises a boiler body, a first connecting pipe is fixedly installed on the top of the boiler body, and a filtering structure is fixedly installed at the end, away from the boiler body, of the first connecting pipe. A third connecting pipe is fixedly mounted on the side, away from the first connecting pipe, of the outer end of the filtering structure. Through cooperative use of a filtering structure, an ammonia water tank and a filtering cotton core, multiple groups of filtering plates arranged on the inner wall of the filtering structure are utilized, then tail gas in the boiler body can be subjected to multi-layer filtering, then the tail gas subjected to primary filtering flows into a square frame through the inner wall of a third connecting pipe, and through work of a gas booster pump, the tail gas is purified. And meanwhile, a liquid level sensor on the inner wall of the ammonia water tank can detect the liquid level of the ammonia water at any time, and the ammonia water is used for carrying out secondary purification on the tail gas.

Description

Technical Field

[0001] The utility model relates to the technical field of tail gas treatment, in particular to a steam boiler tail gas treatment device. Background Art

[0002] Steam boilers can be divided into electric steam boilers, oil-fired steam boilers, gas-fired steam boilers, etc. according to the fuel, and can be divided into manual combustion steam boilers and fully automatic chain combustion steam boilers according to the fuel supply method. The exhaust gas generated by the combustion of steam boilers contains sulfur dioxide, nitrogen oxides, smoke and flue gas, which will pollute the environment if directly discharged into the atmosphere.

[0003] The existing steam boiler exhaust gas treatment device has a main problem of low exhaust gas purification efficiency during use, which leads to a large amount of impurities remaining in the exhaust gas, making it harmful to the environment. Secondly, the existing steam boiler exhaust gas treatment device has a problem of not being able to replace the filter cotton core during use, which leads to the reduction of the filtering effect of the filter cotton core after long-term use, thereby affecting the treatment and purification of the exhaust gas. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the utility model provides a steam boiler exhaust gas treatment device, which has the advantages of multiple purification processes and easy replacement of filter cotton cores, and solves the problems raised by the above background technology.

[0005] The utility model provides the following technical solution: a steam boiler exhaust gas treatment device, comprising a boiler body, wherein a connecting pipe 1 is fixedly installed on the top of the boiler body, and a filter structure is fixedly installed on the end of the connecting pipe 1 away from the boiler body, and a connecting pipe 3 is fixedly installed on the side of the outer end of the filter structure away from the connecting pipe 1, and a square frame is fixedly installed on the inner wall of the square frame, a gas pressure pump is provided, a connecting pipe 2 is fixedly installed on the bottom of the square frame, an ammonia tank is fixedly installed on the bottom of the connecting pipe 2, a liquid level sensor is provided on the inner wall of the ammonia tank, a discharge pipe is fixedly installed on the outer side of the ammonia tank, a filter cotton core is slidably connected to the inner wall of the discharge pipe, a circular groove is provided on the outer edge of the discharge pipe and the filter cotton core, a spring is provided on the inner wall of the circular groove, a limiting block is fixedly installed on the extended end of the spring, a fixed sealing block is fixedly installed on the inner wall of the circular groove, and a sliding rod is slidably connected to the inner wall of the fixed sealing block.

[0006] As a preferred technical solution of the present invention: a water inlet is provided on the top of the ammonia water tank, a water outlet is provided on the bottom of the ammonia water tank, and an electric valve is provided on the inner wall of the water outlet.

[0007] As a preferred technical solution of the present invention: the inner wall of the filtering structure is provided with filter plates, and the number of the filter plates is several.

[0008] As a preferred technical solution of the present invention: the inner walls of the gas pressure pump, the liquid level sensor and the electric valve are all provided with circuit boards, and the inner wall of the circuit board is provided with a Bluetooth receiver.

[0009] As an optimal technical solution of the present invention: a circular protective cover is fixedly sleeved on the outer edge of the filter cotton core, the circular groove is opened on the outer edge of the circular protective cover and the discharge pipe, and a one-way valve is provided on the inner wall of the connecting pipe three.

[0010] As a preferred technical solution of the present invention: the outer end of the sliding rod is fitted with the limit block, the limit block is slidably connected to the inner wall of the discharge pipe, and the limit block is slidably connected to the inner wall of the circular groove.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] 1. The steam boiler exhaust gas treatment device, through the coordinated use of the filtering structure, the ammonia water tank and the filter cotton core, utilizes several groups of filter plates arranged on the inner wall of the filtering structure to perform multi-layer filtration on the exhaust gas in the boiler body, and then the exhaust gas that has been initially filtered flows into the square frame through the inner wall of the connecting pipe three, and through the operation of the gas pressure pump, the exhaust gas that has been preliminarily purified flows into the inner wall of the ammonia water tank through the connecting pipe two, and then mixes with the ammonia water on the inner wall of the ammonia water tank. At the same time, the liquid level sensor on the inner wall of the ammonia water tank can detect the liquid level of the ammonia water at any time, and the exhaust gas is secondary purified by the ammonia water. Then the exhaust gas after the secondary purification flows outward along the inner wall of the discharge pipe, and after passing through the filter cotton core, it can be purified again, thereby improving the purification efficiency of the exhaust gas.

[0013] 2. The steam boiler exhaust gas treatment device uses a sliding rod and a limit block in combination. When the filter cotton core needs to be replaced after a long period of use, it is only necessary to press the sliding rod inward to make the sliding rod slide inward on the inner wall of the fixed sealing block, thereby supporting the limit block, causing the limit block to slide out of the inner wall of the circular groove and squeeze the spring to deform and contract. At this time, the fixed restriction between the filter cotton core and the discharge pipe disappears, and the filter cotton core can be pulled outward to be pulled out of the inner wall of the discharge pipe for replacement. The replacement method is convenient and quick. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0015] Figure 2 This is a schematic diagram of the structure of the utility model when viewed from above;

[0016] Figure 3This is a schematic diagram of the half-section structure of the utility model;

[0017] Figure 4 This is a schematic diagram of the water inlet structure of the utility model;

[0018] Figure 5 For this utility model Figure 4 Schematic diagram of the local enlarged structure at point A.

[0019] In the figure: 1. Boiler body; 2. Connecting pipe 1; 3. Filter structure; 4. Square frame; 5. Connecting pipe 2; 6. Ammonia tank; 7. Discharge pipe; 8. Filter plate; 9. One-way valve; 10. Gas booster pump; 11. Liquid level sensor; 12. Filter cotton core; 13. Round groove; 14. Spring; 15. Limit block; 16. Fixed sealing block; 17. Sliding rod; 18. Connecting pipe 3. DETAILED DESCRIPTION

[0020] The following will be combined with the accompanying 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.

[0021] See also Figure 1-Figure 5 A steam boiler tail gas treatment device includes a boiler body 1, a connecting pipe 2 is fixedly installed on the top of the boiler body 1, a filter structure 3 is fixedly installed on the end of the connecting pipe 2 away from the boiler body 1, a connecting pipe 3 18 is fixedly installed on the side of the outer end of the filter structure 3 away from the connecting pipe 2, a square frame 4 is fixedly installed on the end of the connecting pipe 3 18 away from the filter structure 3, a gas pressure pump 10 is provided on the inner wall of the square frame 4, a connecting pipe 2 5 is fixedly installed on the bottom of the square frame 4, and a connecting pipe 2 5 is fixedly installed at the bottom of the ammonia tank 6, the inner wall of the ammonia tank 6 is provided with a liquid level sensor 11, the outer side of the ammonia tank 6 is fixedly installed with a discharge pipe 7, the inner wall of the discharge pipe 7 is slidably connected with a filter cotton core 12, the outer edges of the discharge pipe 7 and the filter cotton core 12 are both provided with a circular groove 13, the inner wall of the circular groove 13 is provided with a spring 14, the extended end of the spring 14 is fixedly installed with a limit block 15, the inner wall of the circular groove 13 is fixedly installed with a fixed sealing block 16, and the inner wall of the fixed sealing block 16 is slidably connected with a slide rod 17.

[0022] In the above structure, the exhaust gas in the boiler body 1 can be filtered in multiple layers by means of several groups of filter plates 8 arranged on the inner wall of the filtering structure 3. The exhaust gas that has been initially filtered then flows into the square frame 4 through the inner wall of the connecting pipe three 18. Through the operation of the gas pressure pump 10, the exhaust gas that has been preliminarily purified flows into the inner wall of the ammonia tank 6 through the connecting pipe two 5, and then mixes with the ammonia water on the inner wall of the ammonia tank 6. At the same time, the liquid level sensor 11 on the inner wall of the ammonia tank 6 can detect the liquid level of the ammonia water at any time, and use the ammonia water to perform secondary purification on the exhaust gas. The exhaust gas after the secondary purification then flows outward along the inner wall of the discharge pipe 7, and can be purified again after passing through the filter cotton core 12, thereby improving the purification efficiency of the exhaust gas.

[0023] In a preferred embodiment, a water inlet is provided at the top of the ammonia water tank 6 , a water outlet is provided at the bottom of the ammonia water tank 6 , and an electric valve is provided on the inner wall of the water outlet.

[0024] In the above structure, the ammonia water can be injected into the inner wall of the ammonia water tank 6 by setting the water inlet, and the ammonia water can be discharged after use by setting the electric valve and the water outlet.

[0025] In a preferred embodiment, the inner wall of the filter structure 3 is provided with filter plates 8 , and the number of the filter plates 8 is several.

[0026] In the above structure, by disposing a plurality of filter plates 8, the exhaust gas can be filtered at multiple levels, thereby improving the efficiency of exhaust gas purification.

[0027] In a preferred embodiment, the gas pressure pump 10 , the liquid level sensor 11 and the inner wall of the electric valve are all provided with a circuit board, and the inner wall of the circuit board is provided with a Bluetooth receiver.

[0028] In the above structure, the gas booster pump 10, the liquid level sensor 11 and the electric valve can be controlled by a Bluetooth receiver provided in the circuit board and then by a remote controller external to the device.

[0029] In a preferred embodiment, a circular protective cover is fixedly sleeved on the outer edge of the filter cotton core 12, a circular groove 13 is opened on the outer edge of the circular protective cover and the discharge pipe 7, and a one-way valve 9 is provided on the inner wall of the connecting pipe 3 18.

[0030] In the above structure, the circular protective cover is provided to protect the filter cotton core 12, and the one-way valve 9 is provided to prevent gas backflow.

[0031] In a preferred embodiment, the outer end of the slide rod 17 fits with the limit block 15 , the limit block 15 is slidably connected to the inner wall of the discharge pipe 7 , and the limit block 15 is slidably connected to the inner wall of the circular groove 13 .

[0032] In the above structure, through the setting of the slide rod 17 and the limit block 15, when the filter cotton core 12 needs to be taken out for replacement, it is only necessary to press the slide rod 17 inward so that the slide rod 17 slides inward on the inner wall of the fixed sealing block 16, thereby supporting the limit block 15, so that the limit block 15 slides out of the inner wall of the circular groove 13 and squeezes the spring 14 to deform and shrink. At this time, the fixed restriction between the filter cotton core 12 and the discharge pipe 7 disappears, and the filter cotton core 12 can be pulled outward to be pulled out of the inner wall of the discharge pipe 7 for replacement.

[0033] Working principle: When the device is needed, the exhaust gas in the boiler body 1 can be filtered in multiple layers through the plurality of filter plates 8 arranged on the inner wall of the filter structure 3. The exhaust gas that has been initially filtered then flows into the square frame 4 through the inner wall of the connecting pipe 3 18. The exhaust gas that has been initially purified flows into the inner wall of the ammonia tank 6 through the operation of the gas pressure pump 10. The exhaust gas is then mixed with the ammonia water on the inner wall of the ammonia tank 6. At the same time, the liquid level sensor 11 on the inner wall of the ammonia tank 6 can detect the liquid level of the ammonia water at any time. The exhaust gas is then purified for the second time by using the ammonia water. The exhaust gas after the second purification is discharged along the exhaust pipe. 7 flows outward and can be purified again after passing through the filter cotton core 12, thereby improving the purification efficiency of the exhaust gas. Secondly, when the filter cotton core 12 needs to be replaced after a long period of use, it is only necessary to press the slide bar 17 inward to make the slide bar 17 slide inward on the inner wall of the fixed sealing block 16, thereby supporting the limit block 15, so that the limit block 15 slides out of the inner wall of the circular groove 13 and squeezes the spring 14 to deform and shrink. At this time, the fixed restriction between the filter cotton core 12 and the discharge pipe 7 disappears, and the filter cotton core 12 can be pulled outward to pull the filter cotton core 12 out of the inner wall of the discharge pipe 7 for replacement. The replacement method is convenient and quick.

[0034] 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 steam boiler tail gas treatment device, comprising a boiler body (1), characterized in that: A connecting pipe 1 (2) is fixedly mounted on the top of the boiler body (1), a filter structure (3) is fixedly mounted on the end of the connecting pipe 1 (2) away from the boiler body (1), a connecting pipe 3 (18) is fixedly mounted on the side of the outer end of the filter structure (3) away from the connecting pipe 1 (2), a square frame (4) is fixedly mounted on the end of the connecting pipe 3 (18) away from the filter structure (3), a gas pressure pump (10) is provided on the inner wall of the square frame (4), a connecting pipe 2 (5) is fixedly mounted on the bottom of the square frame (4), and an ammonia water tank (6) is fixedly mounted on the bottom of the connecting pipe 2 (5). ), a liquid level sensor (11) is provided on the inner wall of the ammonia water tank (6), a discharge pipe (7) is fixedly installed on the outer side of the ammonia water tank (6), a filter cotton core (12) is slidably connected to the inner wall of the discharge pipe (7), a circular groove (13) is provided on the outer edges of the discharge pipe (7) and the filter cotton core (12), a spring (14) is provided on the inner wall of the circular groove (13), a limit block (15) is fixedly installed on the extended end of the spring (14), a fixed sealing block (16) is fixedly installed on the inner wall of the circular groove (13), and a slide rod (17) is slidably connected to the inner wall of the fixed sealing block (16).

2. A steam boiler tail gas treatment device according to claim 1, characterized in that: The top of the ammonia water tank (6) is provided with a water inlet, the bottom of the ammonia water tank (6) is provided with a water outlet, and the inner wall of the water outlet is provided with an electric valve.

3. The steam boiler tail gas treatment device according to claim 1, characterized in that: The inner wall of the filter structure (3) is provided with filter plates (8), and the number of the filter plates (8) is several.

4. The steam boiler tail gas treatment device according to claim 1, characterized in that: The gas pressure pump (10), the liquid level sensor (11) and the inner wall of the electric valve are all provided with a circuit board, and the inner wall of the circuit board is provided with a Bluetooth receiver.

5. The steam boiler tail gas treatment device according to claim 1, characterized in that: The outer edge of the filter cotton core (12) is fixedly sleeved with a circular protective cover, the circular groove (13) is opened on the outer edge of the circular protective cover and the discharge pipe (7), and the inner wall of the connecting pipe (18) is provided with a one-way valve (9).

6. The steam boiler tail gas treatment device according to claim 1, characterized in that: The outer end of the slide rod (17) is fitted with the limit block (15), and the limit block (15) is slidably connected to the inner wall of the discharge pipe (7), and the limit block (15) is slidably connected to the inner wall of the circular groove (13).

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