Scale discharging structure of inner container of steam generator

Abstract

The utility model discloses a steam generator inner container scale discharging structure which comprises an inner container shell and a bottom annular ring arranged at the bottom end of the inner container shell, a V-shaped guide plate is arranged at the bottom of the inner container shell, a mounting groove is formed in the center line of the bottom wall of the inner container shell, the V-shaped guide plate is welded to the edge of the mounting groove, and the V-shaped guide plate is arranged on the bottom annular ring. A first scale discharging hole is formed in the inner wall of the bottom annular ring, one end of a V-shaped guide plate is welded to the inner wall of the bottom annular ring, the other end of the V-shaped guide plate is welded to the edge of the first scale discharging hole, and the height of the first scale discharging hole is gradually reduced in the direction from the inner wall end to the first scale discharging hole. According to the steam generator inner container, the mounting groove is formed in the inner container shell, the V-shaped guide plate is fixed to the bottom end of the mounting groove, and when flushing is conducted on the inner container shell, water scale treated through an anti-scale agent in the inner container shell can be discharged from the V-shaped guide plate and the first scale discharging hole, so that the water scale discharging efficiency of the steam generator inner container is improved.

Description

Technical Field

[0001] This utility model relates to the field of steam generators, and in particular to a scale removal structure for the inner liner of a steam generator. Background Technology

[0002] A steam generator, also called a steam heat source machine (commonly known as a boiler), is a mechanical device that uses the heat energy of fuel or other energy sources to heat water into hot water or steam. The inner tank of the steam generator, also known as the water tank of the steam generator, is the core component of the steam generator, mainly used to store water and heat it into steam.

[0003] The existing technology still has the following problems when used:

[0004] In the field of steam generators for food steaming, for food safety reasons, scale inhibitors cannot be added to the inner tank of the steaming unit. Therefore, after a long period of use, once the steam generator is no longer used for steaming food and scale inhibitors are added for a period of time, the scale adhering to the inner wall of the inner tank will fall off. The fallen scale needs to be removed from the opening with a tool, which affects the efficiency of scale removal. Utility Model Content

[0005] To overcome the shortcomings of the existing technology, this utility model provides a scale removal structure for the inner liner of a steam generator, which can solve the following technical problems: In the field of steam generators for food steaming, for food safety reasons, it is not possible to add scale inhibitors to the inner liner for food steaming. Therefore, after a long period of use, when the steam generator is no longer used for food steaming and scale inhibitors are added for a period of time, the scale adhering to the inner wall of the inner liner will fall off. The fallen scale needs to be removed from the opening with a tool, which affects the scale removal efficiency.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a scale removal structure for the inner liner of a steam generator, comprising an inner liner shell and a bottom annular ring disposed at the bottom end of the inner liner shell. A V-shaped guide plate is disposed at the bottom of the inner liner shell, and an installation groove is formed at the center line of the bottom wall of the inner liner shell. A V-shaped guide plate is welded to the edge of the installation groove. A first scale removal hole is formed on the inner wall of the bottom annular ring. One end of the V-shaped guide plate is welded to the inner wall of the bottom annular ring, and the other end is welded to the edge of the first scale removal hole. The height of the first scale removal hole gradually decreases from the inner wall end to the first scale removal hole, so that the scale inside the inner liner shell can be flushed out by flowing water.

[0007] As a preferred technical solution of this utility model, fire vent holes are equidistantly provided on the two side plates of the V-shaped guide plate, and the fire vent holes on the two side plates are arranged alternately.

[0008] As a preferred embodiment of this utility model, a pipe is welded between the fire vent and the top wall of the inner shell, and a pipe is welded between the bottom wall and the top wall of the inner shell.

[0009] As a preferred embodiment of this utility model, the inner shell is provided with an opening on its side.

[0010] As a preferred embodiment of this utility model, the bottom of the bottom annular ring has a flange that is folded outward.

[0011] As a preferred technical solution of this utility model, a drain shell is provided between the inner shell and the flange. The drain shell is upside down on the first drain hole, and the first drain hole is welded to the inner shell, the bottom annular ring and the flange. The bottom end of the flange is provided with a second drain hole that communicates with the interior of the drain shell.

[0012] As a preferred embodiment of this utility model, a high-temperature resistant sealing block is inserted into the second descaling hole, a high-temperature resistant sealing ring is provided at the bottom end of the high-temperature resistant sealing block, a pressure plate is fixed at the bottom end of the high-temperature resistant sealing ring, and a fixing bolt assembly is provided between the pressure plate and the flange.

[0013] Compared with the prior art, the beneficial effects that this utility model can achieve are:

[0014] 1. By designing an installation groove at the bottom centerline of the inner tank shell and a V-shaped guide plate fixed at the bottom of the installation groove, when flushing the inner tank shell with water, the scale treated with anti-scaling agent inside the inner tank shell can be discharged from the V-shaped guide plate and the first scale discharge hole, thereby improving the efficiency of scale discharge from the inner tank of the steam generator.

[0015] 2. By designing a high-temperature resistant sealing ring set at the top of the pressure plate, the pressure plate is fixed by the fixing bolt assembly and then sealed by the high-temperature resistant sealing ring, and further sealed by the high-temperature resistant sealing block inserted into the drain shell. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the inner liner of the steam generator of this utility model;

[0017] Figure 2 This is a three-dimensional structural diagram of the inner liner of the steam generator of this utility model from another angle;

[0018] Figure 3 This is a three-dimensional cross-sectional view of the inner tank of the steam generator of this utility model;

[0019] Figure 4 This utility model Figure 3 A magnified schematic diagram of the structure at point B in the middle;

[0020] Figure 5 This is a schematic diagram of the V-shaped guide plate structure of this utility model;

[0021] Figure 6 This is a top view of the steam generator of this utility model;

[0022] Figure 7 This utility model Figure 6 Schematic diagram of the cross-sectional structure at point AA;

[0023] The components include: 1. Inner shell; 2. Bottom annular ring; 3. Flange; 4. Drain shell; 5. Opening; 6. Pipe; 7. V-shaped guide plate; 8. Mounting groove; 9. Fixing bolt assembly; 10. Pressure plate; 11. High-temperature resistant sealing pressure ring; 12. High-temperature resistant sealing insert; 13. First scale discharge hole; 14. Second scale discharge hole; 15. Fire hole. Detailed Implementation

[0024] To make the technical means, creative features, and achieved objectives and effects of this utility model easier to understand, the present utility model is further described below with reference to specific embodiments. However, the following embodiments are merely preferred embodiments of this utility model and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments described in the implementation are all within the protection scope of this utility model without creative effort.

[0025] Example

[0026] Please refer to Figures 1-2 As shown, this utility model provides a scale removal structure for the inner liner of a steam generator, including an inner liner shell 1. A bottom annular ring 2 is fixed to the bottom end of the inner liner shell 1, and an outwardly bent flange 3 is fixed to the bottom end of the bottom annular ring 2. An installation groove 8 is provided at the center line of the bottom plate of the inner liner shell 1, and the bottom plate of the inner liner shell 1 has an inclination or arc towards the installation groove 8, so that the free scale particles at the bottom of the inner liner shell 1 can move more easily to the installation groove 8. A V-shaped guide plate 7 is welded to the edge of the installation groove 8. A first scale removal hole 13 is provided on the bottom annular ring 2. The V-shaped guide plate 7 is welded to the edge of the first scale removal hole 13, and the other end of the V-shaped guide plate 7 is welded to the bottom annular ring 2. The height of the V-shaped guide plate 7 gradually decreases from the end welded to the bottom annular ring 2 to the end welded to the first scale removal hole 13, so that the two side plates of the V-shaped guide plate 7 have a certain inclination, thereby facilitating the removal of scale.

[0027] like Figures 1-7As shown, fire vents 15 are equidistantly provided on both side plates of the V-shaped guide plate 7. The fire vents 15 on the two side plates are staggered. A pipe 6 is provided between the fire vents 15 and the top wall of the inner shell 1. A pipe 6 is also provided between the bottom wall and the top wall of the inner shell 1. The pipe 6 in the figure is a schematic diagram. Its specific shape can be spiral or coiled, and its shape and position can be determined according to actual usage requirements. The top of the inner shell 1 is provided with necessary design components such as a water inlet and an exhaust port. Some components are not shown, and the specific position and structure of the components are subject to actual usage. The side of the inner shell 1 is provided with an opening 5, which is used for maintenance, etc. When not in use, it is sealed by a flange and sealing rubber.

[0028] Among them, the pipe 6 extends upward from the bottom. When the burner in the bottom ring 2 heats the bottom of the inner shell 1, the pipe 6 will act as a chimney, drawing some of the flames generated by the burner upward, forming a chimney effect, increasing the heating area and improving the heating efficiency.

[0029] like Figures 1-7 As shown, a drain shell 4 is fixed to the outer side of the bottom annular ring 2. The drain shell 4 is upside down on the outer side of the first scale discharge hole 13, and both ends of the drain shell 4 are welded to the inner shell 1 and the flange 3. A second scale discharge hole 14 communicating with the drain shell 4 is opened at the bottom of the flange 3. A pressure plate 10 is fixed to the bottom of the flange 3 by a fixing bolt assembly 9. The fixing bolt assembly 9 includes bolts and nuts. A high-temperature resistant sealing ring 11 is provided on the top of the pressure plate 10. After being fixed by the fixing bolt assembly 9, the high-temperature resistant sealing ring 11 seals the second scale discharge hole 14. A high-temperature resistant sealing block 12 is provided on the top of the high-temperature sealing ring 11. The high-temperature resistant sealing block 12 is inserted into the interior of the drain shell 4. The high-temperature resistant sealing ring 11 and the high-temperature resistant sealing block 12 are made of high-temperature resistant fluororubber, so that the high-temperature resistant sealing ring 11 and the high-temperature resistant sealing block 12 will not come into contact with the open flame in the bottom annular ring 2. The condition of the high-temperature resistant sealing ring 11 and the high-temperature resistant sealing block 12 should be checked regularly. If slight aging or deformation is found in the high-temperature resistant sealing ring 11 and the high-temperature resistant sealing block 12, they should be repaired or replaced in time.

[0030] Specific working principle:

[0031] In practical applications, commonly used scale inhibitors such as citric acid and trisodium phosphate can be selected. When scale removal is required, first stop the food steaming operation of the steam generator, then open the water inlet of the inner tank shell 1 and inject the prepared aqueous solution containing the scale inhibitor into the inner tank shell 1 until it is full. Next, start the heating device to raise the temperature of the aqueous solution to the optimal working temperature of the scale inhibitor, maintain this temperature for a period of time, and allow the scale to fully react with the scale inhibitor and fall off. After the temperature cools down to room temperature naturally, remove the seals of the high-temperature resistant sealing plug 12 and the high-temperature resistant sealing pressure ring 11, allowing the water in the inner tank shell 1 to flow out through the V-shaped guide plate 7 and the first scale removal hole 13, and flow downward through the drain shell 4. The scale is smoothly discharged through the slope of the mounting groove 8 and the slope of the V-shaped guide plate 7, thereby improving the scale removal efficiency.

[0032] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A scale removal structure for the inner liner of a steam generator, comprising an inner liner shell (1) and a bottom annular ring (2) disposed at the bottom end of the inner liner shell (1), characterized in that: The bottom of the inner shell (1) is provided with a V-shaped guide plate (7), and an installation groove (8) is provided at the center line of the bottom wall of the inner shell (1). The V-shaped guide plate (7) is welded to the edge of the installation groove (8). The inner wall of the bottom annular ring (2) is provided with a first scale discharge hole (13). One end of the V-shaped guide plate (7) is welded to the inner wall of the bottom annular ring (2), and the other end is welded to the edge of the first scale discharge hole (13). The height of the first scale discharge hole (13) gradually decreases from the inner wall end to the first scale discharge hole (13), so that the scale inside the inner shell (1) can be flushed out by flowing water.

2. The scale removal structure for the inner liner of a steam generator according to claim 1, characterized in that: Fire holes (15) are provided at equal intervals on the two side plates of the V-shaped guide plate (7), and the fire holes (15) on the two side plates are arranged alternately.

3. The scale removal structure for the inner liner of a steam generator according to claim 2, characterized in that: A pipe (6) is welded between the fire vent (15) and the top wall of the inner shell (1), and a pipe (6) is welded between the bottom wall and the top wall of the inner shell (1).

4. The scale removal structure for the inner liner of a steam generator according to claim 1, characterized in that: The inner shell (1) has an opening (5) on its side.

5. The scale removal structure for the inner liner of a steam generator according to claim 1, characterized in that: The bottom of the bottom annular ring (2) has a flange (3) that is folded outward.

6. The scale removal structure for the inner liner of a steam generator according to claim 5, characterized in that: A drain shell (4) is provided between the inner shell (1) and the flange (3). The drain shell (4) is upside down on the first drain hole (13), and the first drain hole (13) is welded to the inner shell (1), the bottom annular ring (2) and the flange (3). The bottom end of the flange (3) is provided with a second drain hole (14) that communicates with the interior of the drain shell (4).

7. The scale removal structure for the inner liner of a steam generator according to claim 6, characterized in that: A high-temperature resistant sealing block (12) is inserted into the second descaling hole (14). A high-temperature resistant sealing ring (11) is provided at the bottom end of the high-temperature resistant sealing block (12). A pressure plate (10) is fixed at the bottom end of the high-temperature resistant sealing ring (11). A fixing bolt assembly (9) is provided between the pressure plate (10) and the flange (3).

Images