Reverse-burning normal-pressure steam furnace

Abstract

The utility model relates to the technical field of furnace bodies, and discloses a counter-burning normal-pressure steam furnace which comprises a furnace shell, a closed waterway groove is formed in the furnace shell, a water adding valve ball observation opening is formed in one side of the front end of the furnace shell, an automatic water adding tank is arranged on the other side of the front end of the furnace shell, and the automatic water adding tank and the water adding valve ball observation opening are communicated with the closed waterway groove. A transparent observation pipeline is arranged at the front end of the water adding valve ball observation opening, and a floating ball valve assembly is arranged in the automatic water adding tank. According to the utility model, a group of seamless steel tube structures are arranged, the whole outside can absorb heat, the seamless steel tubes are communicated with the furnace shell, and the heat absorption efficiency of the heat absorption structure is higher than that of a single convex water drum structure.

Description

Technical Field

[0001] The utility model relates to the technical field of furnace bodies, in particular to a reverse-firing normal-pressure steam furnace. Background Art

[0002] Steam has a wide range of uses in the fields of national production and life, such as steaming rice, steamed buns, cooking, sauna, disinfection, beauty, etc. in life, such as chemical heating, laundry, pharmaceutical, building materials production, food production, etc. Steam boiler is a boiler that automatically and continuously produces high-temperature steam. It is mainly composed of water supply system, automatic control system, furnace and heating system and safety protection system.

[0003] The utility model with the existing application number 201620079791.6 relates to a steam furnace, including a steam furnace body provided with a sandwich water bag, the sandwich water bag can exchange heat with the internal flue gas for the first time; the furnace body is also provided with a water pipe connected with the sandwich water bag, the water pipe is in a chamber separated by a protrusion of the water bag, the cross-section of the chamber separated by the protrusion of the water bag is a curved flue, and the water pipe performs secondary heat exchange in the curved flue. The utility model overcomes the defect of waste heat waste.

[0004] However, the above steam furnace still has the following problems when in use: a protruding water bag is set at the coal burning place, and its outer contact area is limited. At the same time, the water inlet of the whole steam furnace is single, and the water amount in the steam furnace cannot be observed in real time. When the steam furnace is actually used, the water amount cannot be observed. In addition, it is impossible to quickly replenish water when it is short of water. Summary of the invention

[0005] 1. Technical problems to be solved

[0006] In view of the deficiencies in the prior art, the utility model provides a reverse-firing atmospheric-pressure steam furnace, which solves the problems raised by the background technology.

[0007] (2) Technical solution

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a reverse-firing normal-pressure steam furnace, comprising a furnace shell, a closed waterway groove is built in the furnace shell, a water-adding valve ball observation port is arranged on one side of the front end of the furnace shell, an automatic water-adding tank is arranged on the other side of the front end of the furnace shell, the automatic water-adding tank and the water-adding valve ball observation port are connected with a closed waterway groove, a transparent observation pipe is arranged at the front end of the water-adding valve ball observation port, a float valve assembly is built in the automatic water-adding tank, and a water-adding pipe port is arranged at one end of the automatic water-adding tank, a feeding port, a slag-cleaning port and an ash-cleaning port are arranged at equal distances from top to bottom on the outer wall at one end of the furnace shell, a first grate is fixedly connected between the front and rear side walls at one end of the furnace shell, the first grate is located between the slag-cleaning port and the ash-cleaning port, three first water pipes are arranged in a triangle above the first grate, and a plurality of second water pipes are arranged in a U shape at the other end of the furnace shell.

[0009] As a further solution of the utility model: the first water pipe and the second water pipe are both seamless steel pipes and are connected by a closed waterway groove, and a water bag is fixedly connected between the front and rear inner walls on the other upper side of the furnace shell, and the water bag is connected by a closed waterway groove and is located on the inner side of multiple second water pipes.

[0010] As a further solution of the utility model: an auxiliary ash cleaning port is provided at the lower side of the front end of the furnace shell, an air inlet is provided at the upper side of the rear end of the furnace shell, a drain pipe is provided at the lower side of the other rear end of the furnace shell, a second grate is fixedly connected between the inner walls at the front and rear ends of the middle part of the furnace shell, the second grate is fixedly connected to the first grate, and a plurality of coal blocks are provided on the top of the first grate.

[0011] As a further solution of the utility model: a high-pressure valve, a flue dust cleaning door, a draft fan and a steam outlet head are arranged in sequence on the top of the furnace shell from one side to the other side.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. In the utility model, a group of seamless steel pipe structures are provided, so that the entire exterior thereof can absorb heat, and the seamless steel pipe is connected with the furnace shell. The heat absorption efficiency of the heat absorption structure is higher than that of a single protruding water bag structure.

[0014] 2. In the utility model, a water adding observation mechanism is provided, a water adding valve ball observation port is provided on the upper side of one side of the front end of the furnace shell, and an automatic water adding tank is provided on the other side of the front end of the furnace shell. After the water adding pipe is assembled, a float is automatically added in the automatic water adding tank. Based on the principle of the floating ball, when the water level is low, the floating ball will fall down, and then the valve will be opened to add water. The floating ball will rise, and when it reaches a certain height, the water inlet will be automatically closed. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1This is a schematic diagram of the main structure of the utility model;

[0016] Figure 2 It is the front view of the utility model;

[0017] Figure 3 It is a rear view of the utility model.

[0018] In the figure: 1. furnace shell; 2. charging port; 3. slag cleaning port; 4. ash cleaning port; 5. first grate; 6. coal blocks; 7. second grate; 8. water bag; 9. first water pipe; 10. second water pipe; 11. high-pressure valve; 12. flue ash cleaning door; 13. draught fan; 14. steam outlet; 15. water filling valve ball observation port; 16. auxiliary ash cleaning port; 17. automatic water tank; 18. drain pipe; 19. air inlet. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] See also Figures 1 to 3 In the embodiment of the utility model, a reverse-firing normal-pressure steam furnace comprises a furnace shell 1, the furnace shell 1 is provided with a closed waterway groove, a water-adding valve ball observation port 15 is arranged on one side of the front end of the furnace shell 1, an automatic water-adding tank 17 is arranged on the other side of the front end of the furnace shell 1, the automatic water-adding tank 17 is connected with the water-adding valve ball observation port 15 by a closed waterway groove, a transparent observation pipe is arranged at the front end of the water-adding valve ball observation port 15, a float valve assembly is arranged in the automatic water-adding tank 17, and a water-adding pipe port is arranged at one end of the automatic water-adding tank 17, a feeding port 2, a slag-removing port 3 and an ash-removing port 4 are arranged at equal distances from top to bottom on the outer side wall at one end of the furnace shell 1, and a fixed water-adding tank 17 is arranged between the front and rear side walls at one end of the furnace shell 1. A first grate 5 is fixedly connected and the first grate 5 is located between the slag cleaning port 3 and the ash cleaning port 4. Three first water pipes 9 are arranged in a triangle shape above the first grate 5. A plurality of second water pipes 10 are arranged in a U shape at the other end of the furnace shell 1. A water adding observation mechanism is arranged as a whole. A water adding valve ball observation port 15 is arranged above one side of the front end of the furnace shell 1. At the same time, an automatic water adding tank 17 is arranged on the other side of the front end of the furnace shell 1. After the water adding pipe is assembled, a float is automatically added in the automatic water adding tank 17. Relying on the principle of the floating ball, when the water level is low, the floating ball will fall down, and then the valve will be opened to add water. The floating ball rises and automatically closes the water inlet after reaching a certain height.

[0021] The first water pipe 9 and the second water pipe 10 are both seamless steel pipes and are connected with a closed waterway groove. A water bag 8 is fixedly connected between the inner side walls on the front and rear sides of the other upper side of the furnace shell 1. The water bag 8 is connected with a closed waterway groove and is located inside multiple second water pipes 10. The whole is provided with three return trips, which is conducive to the full combustion of the coal block 6.

[0022] An auxiliary ash cleaning port 16 is provided at the lower side of the front end of the furnace shell 1, an air inlet 19 is provided at the upper side of the rear end of the furnace shell 1, and a drain pipe 18 is provided at the lower side of the other rear end of the furnace shell 1. A second grate 7 is fixedly connected between the inner side walls at the front and rear ends of the middle part of the furnace shell 1, and the second grate 7 is fixedly connected to the first grate 5. A plurality of coal blocks 6 are provided on the top of the first grate 5. A group of seamless steel pipe structures are provided as a whole, and the entire exterior thereof can absorb heat. The seamless steel pipe is connected to the furnace shell 1, and the heat absorption structure has higher heat absorption efficiency than the single protruding water bag 8 structure.

[0023] The top of the furnace shell 1 is provided with a high-pressure valve 11, a flue dust cleaning door 12, a draft fan 13 and a steam outlet head 14 in sequence from one side to the other. A large air inlet structure design is adopted, with large gas production and large combustion capacity.

[0024] The working principle of the utility model is: first, coal blocks 6 are added into the first grate 5 through the feeding port 2, and the added coal is burned in the first grate 5. Due to the suction of the drainage fan 13, the coal blocks 6 burn in the direction of the wind flow, so the flame burns downward. When the coal is burned, it will become soft, so that the burned coal falls from the first grate 5 to the bottom of the furnace shell 1. The accumulated ash can be cleaned by opening the ash cleaning port 4, and the flame burns upward. At this time, the first water pipe 9, the second water pipe 10, and the water bag 8 are heat exchanged with the heat flow in sequence, and finally the smoke is discharged from the drainage fan 13. In addition, a water adding observation mechanism is arranged as a whole, and a water adding valve ball observation port 15 is arranged above one side of the front end of the furnace shell 1, and an automatic water adding tank 17 is arranged on the other side of the front end of the furnace shell 1. After the water adding pipe is assembled, a float is automatically added in the automatic water adding tank 17. Relying on the floating ball principle, the water level is low and the floating ball will fall down, and then the valve is opened to add water, and the floating ball rises. After reaching a certain height, the water inlet will be automatically closed.

[0025] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A reverse-firing atmospheric pressure steam furnace, comprising a furnace shell (1), wherein the furnace shell (1) has a closed water channel groove built therein; Features: A water filling valve ball observation port (15) is provided on one side of the front end of the furnace shell (1), and an automatic water filling tank (17) is provided on the other side of the front end of the furnace shell (1); the automatic water filling tank (17) and the water filling valve ball observation port (15) are connected via a closed water channel groove; The outer wall at one end of the furnace shell (1) is provided with a feeding port (2), a slag removal port (3) and an ash removal port (4) at equal distances from top to bottom, and a first grate (5) is fixedly connected between the front and rear side walls at one end of the inner wall of the furnace shell (1); The first grate (5) is located between the slag cleaning port (3) and the ash cleaning port (4); three first water pipes (9) are arranged in a triangular shape above the first grate (5); and a plurality of second water pipes (10) are arranged in a U shape at the other end of the furnace shell (1).

2. A reverse-firing atmospheric pressure steam furnace according to claim 1, characterized in that: The first water pipe (9) and the second water pipe (10) are both seamless steel pipes and are connected by a closed waterway groove.

3. The reverse-firing atmospheric pressure steam furnace according to claim 1, characterized in that: A transparent observation pipe is provided at the front end of the water filling valve ball observation port (15); a floating ball valve assembly is built into the automatic water filling tank (17); and a water filling pipe port is provided at one end of the automatic water filling tank (17).

4. The reverse-firing atmospheric pressure steam furnace according to claim 1, characterized in that: An auxiliary ash cleaning port (16) is provided below one side of the front end of the furnace shell (1), an air inlet (19) is provided above one side of the rear end of the furnace shell (1), and a drainage pipe (18) is provided below the other side of the rear end of the furnace shell (1).

5. The reverse-firing atmospheric pressure steam furnace according to claim 1, characterized in that: A second grate (7) is fixedly connected between the inner side walls at the front and rear ends of the middle of the furnace shell (1), the second grate (7) is fixedly connected to the first grate (5), and a plurality of coal blocks (6) are arranged on the top of the first grate (5).

6. The reverse-firing atmospheric pressure steam furnace according to claim 1, characterized in that: A water bag (8) is fixedly connected between the front and rear inner side walls on the other upper side of the furnace shell (1); the water bag (8) is connected to a closed water channel groove and is located inside a plurality of second water pipes (10).

7. The reverse-firing atmospheric pressure steam furnace according to claim 1, characterized in that: The top of the furnace shell (1) is provided with a high-pressure valve (11), a flue dust cleaning door (12), a draft fan (13) and a steam outlet head (14) in sequence from one side to the other.

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