Boiler bottom water seal device

Abstract

The utility model relates to a boiler bottom water seal device which comprises a precipitation tank, a water seal tank and a water seal insertion plate, the upper ends of the precipitation tank and the water seal tank are open, and the lower end of the water seal insertion plate is immersed in the water seal tank; the precipitation tank is communicated with the water seal tank, a guide plate is arranged at the bottom of the water seal tank, and the guide plate inclines downwards towards the middle of the precipitation tank, so that slag ash precipitates slide into the precipitation tank from the guide plate; the water seal plugboard is connected to the bottom of a boiler dry bottom hopper, and the water seal tank is connected to the upper end of a slag well. The water seal tank has the beneficial effects that slag dust entering the water seal tank along with flue gas is settled under the action of self gravity after entering the water seal tank, and slides into the settling tank on the inclined guide plate, so that the water seal tank is simpler in structure, slag sediments only need to be regularly sucked out from the settling tank through a sludge pump, and the water seal tank is convenient to use. The boiler does not need to be shut down, and normal use of the water seal structure is not affected.

Description

Technical Field

[0001] The utility model relates to the technical field of boiler water seals, in particular to a boiler bottom water seal device. Background Art

[0002] The water seal structure is an indispensable structure in the boiler. A water seal structure is set between the cold ash hopper and the slag well at the bottom of the boiler to prevent air from entering and achieve a sealing effect. However, slag is easy to enter the water seal groove of the conventional water seal structure. If the slag is not cleaned for a long time, it will cause the water seal groove to be blocked, affecting the performance of the water seal structure.

[0003] The Chinese utility model patent with patent number 202220901943.1 discloses a boiler bottom water seal device and a water seal assembly. Although it solves the problem of blockage in the water seal groove, its structure is relatively complex and contains many electronic components, which greatly increases the cost. In addition, due to its interlocking structure, when problems occur with the electronic components, it is difficult to disassemble and repair them. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a boiler bottom water seal device to overcome the deficiencies in the above-mentioned prior art.

[0005] The utility model solves the above-mentioned technical problems with the following technical solutions: a boiler furnace bottom water seal device, comprising a sedimentation tank, a water seal tank and a water seal plug plate, the sedimentation tank and the water seal tank are open at the upper ends, and the lower end of the water seal plug plate is immersed in the water seal tank; the sedimentation tank and the water seal tank are connected, and a guide plate is arranged at the bottom of the water seal tank, and the guide plate is inclined downward toward the middle of the sedimentation tank so that slag ash sediment can slide from the guide plate into the sedimentation tank; the water seal plug plate is connected to the bottom of the boiler cold ash hopper, and the water seal tank is connected to the upper end of the slag pit.

[0006] The beneficial effect of the utility model is that the slag dust that enters the water seal groove along with the flue gas enters the water seal groove, settles under the action of its own gravity, and slides into the sedimentation groove on the inclined guide plate. The structure is simpler, and it only needs to regularly suck out the slag sediment from the sedimentation groove by a sludge pump. There is no need to dismantle the water seal groove for cleaning, the boiler does not need to be shut down, and the normal use of the water seal structure is not affected.

[0007] On the basis of the above technical solution, the present invention can also be improved as follows.

[0008] Furthermore, it also includes a water pump; the water seal groove and the sedimentation groove include an outer ring baffle, a middle ring baffle and an inner ring baffle arranged in sequence from the outside to the inside, a sedimentation groove is formed between the outer ring baffle and the middle ring baffle, and a water seal groove is formed between the middle ring baffle and the inner ring baffle; the lower peripheral wall of the middle ring baffle is located at the lowest position of the guide plate, and a plurality of through holes are arranged in a circular array to connect the water seal groove with the sedimentation groove; the water inlet end of the water pump is arranged at the inner upper end of the sedimentation groove, and the water outlet end of the water pump is arranged at the highest position of the guide plate.

[0009] Furthermore, a hollow cavity is provided in the inner ring baffle, a plurality of flushing ports are arranged in a circular array on the outer peripheral wall at the bottom of the hollow cavity, and the water outlet of the water pump is connected with the hollow cavity through a pipeline.

[0010] Furthermore, filter cotton is arranged in the sedimentation tank, the filter cotton is arranged above the through hole, and the water inlet end of the water pump is arranged above the filter cotton.

[0011] Furthermore, a support ring is arranged on the inner peripheral wall of the sedimentation tank, and the filter cotton is arranged on the support ring.

[0012] Furthermore, a filter screen is arranged between the inner ring baffle and the water seal plug plate, one end of the filter screen is connected to the upper end of the inner ring baffle, and the other end of the filter screen is arranged obliquely upward and close to the water seal plug plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the utility model;

[0014] Figure 2 It is a schematic diagram of the explosion structure of the utility model;

[0015] Figure 3 It is a schematic diagram of the cross-sectional structure of the utility model.

[0016] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0017] 1. Sedimentation tank; 2. Water seal tank; 121. Outer ring baffle; 122. Middle ring baffle; 1221. Through hole; 123. Inner ring baffle; 1231. Hollow cavity; 1232. Water flushing port; 3. Water seal plug plate; 4. Guide plate; 5. Boiler cold ash hopper; 6. Slag well; 8. Filter cotton; 9. Filter screen. DETAILED DESCRIPTION

[0018] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0019] like Figure 1 to Figure 3As shown, Example 1, a boiler bottom water seal device, includes a sedimentation tank 1, a water seal tank 2 and a water seal plug plate 3, the sedimentation tank 1 and the water seal tank 2 are opened at the upper ends, and the lower end of the water seal plug plate 3 is immersed in the water seal tank 2; the sedimentation tank 1 and the water seal tank 2 are connected, and a guide plate 4 is provided at the bottom of the water seal tank 2, and the guide plate 4 is inclined downward toward the middle of the sedimentation tank 1 so that the slag ash sediment can slide from the guide plate 4 into the sedimentation tank 1; the water seal plug plate 3 is connected to the bottom of the boiler cold ash hopper 5, and the water seal tank 2 is connected to the upper end of the slag pit 6.

[0020] After the slag dust enters the water seal tank 2 along with the flue gas, it settles under the action of its own gravity and slides down into the sedimentation tank 1 on the inclined guide plate 4. The structure is simpler and only requires the slag sediment to be sucked out from the sedimentation tank 1 regularly by a sludge pump. There is no need to dismantle the water seal tank 2 for cleaning and the boiler does not need to be shut down, which does not affect the normal use of the water seal structure.

[0021] Embodiment 2: This embodiment is a further improvement on the basis of embodiment 1, and its details are as follows:

[0022] It also includes a water pump; the water seal groove 2 and the sedimentation tank 1 include an outer ring baffle 121, a middle ring baffle 122 and an inner ring baffle 123 arranged in sequence from the outside to the inside, the sedimentation tank 1 is formed between the outer ring baffle 121 and the middle ring baffle 122, and the water seal groove 2 is formed between the middle ring baffle 122 and the inner ring baffle 123; the lower peripheral wall of the middle ring baffle 122 is located at the lowest position of the guide plate 4, and a plurality of through holes 1221 are arranged in a circular array to connect the water seal groove 2 with the sedimentation tank 1; the water inlet end of the water pump is arranged at the inner upper end of the sedimentation tank 1, and the water outlet end of the water pump is arranged at the highest position of the guide plate 4.

[0023] By pumping water through the water pump, a water flow is generated at the guide plate 4, which can flush out the slag sediment attached to the guide plate 4 that has not slid into the sedimentation tank 1, and prevent a small amount of slag sediment attached to the guide plate 4 from affecting the sliding of other slag sediments; the water pump draws clean water after precipitation from the top of the sedimentation tank 1 for flushing, so that water resources can be reused, which can greatly save water resources.

[0024] Embodiment 3, this embodiment is a further improvement on the basis of embodiment 2, and its details are as follows:

[0025] A hollow cavity 1231 is provided in the inner ring baffle 123, and a plurality of flushing ports 1232 are arranged in a circumferential array on the outer peripheral wall at the bottom of the hollow cavity 1231. The water outlet of the water pump is connected to the hollow cavity 1231 through a pipe. The arrangement of pipes can be reduced, and only one pipe is required to be connected to the hollow cavity 1231, which greatly reduces the cost.

[0026] Embodiment 4: This embodiment is a further improvement on the basis of embodiment 2, and its details are as follows:

[0027] The sedimentation tank 1 is provided with filter cotton 8, which is arranged above the through hole 1221, and the water inlet end of the water pump is arranged above the filter cotton 8. The filter cotton 8 can filter the slag sediment in the sedimentation tank 1 to prevent the slag sediment from being pumped into the water seal tank 2 again, and can also prevent the slag sediment from damaging the water pump.

[0028] Embodiment 5, this embodiment is a further improvement on the basis of embodiment 4, and its details are as follows:

[0029] The inner wall of the sedimentation tank 1 is provided with a support ring, and the filter cotton 8 is arranged on the support ring, which plays a supporting role for the filter cotton 8 and is easy to take out and replace the filter cotton 8.

[0030] Embodiment 6: This embodiment is a further improvement based on any one of Embodiments 2 to 5, and its details are as follows:

[0031] A filter screen 9 is arranged between the inner ring baffle 123 and the water seal plug plate 3, one end of the filter screen 9 is connected to the upper end of the inner ring baffle 123, and the other end of the filter screen 9 is arranged obliquely upward close to the water seal plug plate 3. The filter screen 9 can filter large particles of slag. In a specific implementation, the mesh size of the filter screen 9 is smaller than the size of the through hole 1221, so that large particles of slag are prevented from entering the water seal groove 2 and causing the through hole 1221 to be blocked. The inclined filter screen 9 allows the slag particles splashed on the filter screen 9 to slide along the filter screen 9, so that the slag particles are prevented from accumulating on the filter screen 9.

[0032] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A boiler bottom water seal device, characterized in that: The invention comprises a sedimentation tank (1), a water seal tank (2) and a water seal plug plate (3); the sedimentation tank (1) and the water seal tank (2) are open at the upper ends, and the lower end of the water seal plug plate (3) is immersed in the water seal tank (2); the sedimentation tank (1) and the water seal tank (2) are connected, and a guide plate (4) is arranged at the bottom of the water seal tank (2); the guide plate (4) is inclined downward toward the middle of the sedimentation tank (1) so that the slag ash sediment slides from the guide plate (4) into the sedimentation tank (1); the water seal plug plate (3) is connected to the bottom of the boiler cold ash hopper (5), and the water seal tank (2) is connected to the upper end of the slag pit (6).

2. A boiler bottom water seal device according to claim 1, characterized in that: It also includes a water pump; the water seal groove (2) and the sedimentation groove (1) include an outer ring baffle (121), a middle ring baffle (122) and an inner ring baffle (123) arranged in sequence from the outside to the inside; the sedimentation groove (1) is formed between the outer ring baffle (121) and the middle ring baffle (122), and the water seal groove (2) is formed between the middle ring baffle (122) and the inner ring baffle (123); the lower peripheral wall of the middle ring baffle (122) is located at the lowest position of the guide plate (4) and is provided with a plurality of through holes (1221) arranged in a circular array so that the water seal groove (2) is connected with the sedimentation groove (1); the water inlet end of the water pump is arranged at the inner upper end of the sedimentation groove (1), and the water outlet end of the water pump is arranged at the highest position of the guide plate (4).

3. A boiler bottom water seal device according to claim 2, characterized in that: A hollow cavity (1231) is provided in the inner ring baffle (123), a plurality of flushing ports (1232) are arranged in a circular array on the outer peripheral wall at the bottom of the hollow cavity (1231), and a water outlet end of the water pump is connected to the hollow cavity (1231) through a pipeline.

4. A boiler bottom water seal device according to claim 2, characterized in that: Filter cotton (8) is arranged in the sedimentation tank (1), the filter cotton (8) is arranged above the through hole (1221), and the water inlet end of the water pump is arranged above the filter cotton (8).

5. A boiler bottom water seal device according to claim 4, characterized in that: The inner peripheral wall of the sedimentation tank (1) is provided with a support ring, and the filter cotton (8) is arranged on the support ring.

6. A boiler bottom water seal device according to any one of claims 2 to 5, characterized in that: A filter screen (9) is arranged between the inner ring baffle (123) and the water seal plug plate (3), one end of the filter screen (9) is connected to the upper end of the inner ring baffle (123), and the other end of the filter screen (9) is arranged obliquely upward and close to the water seal plug plate (3).

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