Energy-saving gas steam generator

Abstract

The invention relates to the technical field of steam generators, and discloses an energy-saving fuel gas steam generator. The energy-saving fuel gas steam generator comprises a cylindrical shell, an evaporation assembly and a cleaning assembly. A groove is formed in the bottom of the cylindrical shell, a plurality of first through holes and a plurality of second through holes are formed in the front end plate, and a plurality of third through holes are formed in the second smoke box; a plurality of fourth through holes are formed in the smoke return cavity, the second return smoke pipes communicate with the corresponding first through holes and the fourth through holes, and the third return smoke pipes communicate with the corresponding second through holes and the third through holes; the first scraping plate is movably arranged in the groove, the two second scraping plates are movably arranged on the two sides of the first scraping plate, and the first driving assembly and the second driving assembly are used for driving the first scraping plate and the second scraping plates to move correspondingly. The heat exchange area of smoke sprayed out of the combustion pipe and water in the cylindrical shell can be increased, rapid evaporation of the water is facilitated, and in addition, water scale attached to the inner wall of the cylindrical shell and the boiler furnace can be cleaned.

Description

Technical Field

[0001] The present invention relates to the technical field of steam generators, and more particularly to an energy-saving gas steam generator. Background Art

[0002] A steam generator is an energy conversion device. The energy input to the steam generator includes chemical energy and electrical energy in the fuel. The steam generator outputs steam, high-temperature water or organic heat carrier with a certain amount of thermal energy. Steam is needed in many fields. Steam can reduce dust in the air, achieve the effect of purifying the environment, and can also make dry air humid. It has a wide range of applications.

[0003] In the related art, the burner of the existing steam generator is usually set at the bottom of the water tank. The flame directly heats the bottom of the pot. The heat exchange area between the bottom of the pot and the water is small, which affects the evaporation rate of water. In addition, scale is easily generated on the bottom of the pot, which affects the heat transfer efficiency. In addition, the Cl- and SO4 contained in the scale 2 -Plasma can also corrode the bottom of the pot and affect the quality of water vapor. Summary of the Invention

[0004] The present invention provides an energy-saving gas steam generator, which solves the technical problems in the related art that the heat exchange area between the pot bottom and water is small, scale corrodes the pot bottom, and affects the quality of water vapor.

[0005] The present invention provides an energy-saving gas steam generator, comprising a cylindrical shell, a bottom of which is provided with a groove along the axial direction, a front end plate provided at one end thereof, a mounting hole, a plurality of first through holes and a plurality of second through holes provided on the front end plate, one end of the cylindrical shell is connected to a first smoke box, and the other end is connected to a second smoke box, and a plurality of third through holes are provided on the second smoke box; an evaporation component, comprising: a furnace, a plurality of second return smoke pipes, a plurality of third return smoke pipes and a burner, the furnace is arranged inside the cylindrical shell, one end of the furnace is connected to the mounting hole, and the other end is connected to a smoke return chamber, and a plurality of third through holes are provided on the smoke return chamber. Four through holes, the second return smoke pipe is connected to the corresponding first through hole and the fourth through hole, the third return smoke pipe is connected to the corresponding second through hole and the third through hole, the burner is connected to the first smoke box and cooperates with one end of the furnace; the cleaning assembly includes a first scraper, a first drive assembly, two second scrapers and two second drive assemblies, the first scraper is movably arranged inside the groove, the first drive assembly is used to drive the first scraper to move in the groove, the two second scrapers are movably arranged on both sides of the first scraper, and the second drive assembly is used to drive the corresponding second scraper to move circumferentially along the inner wall of the cylindrical shell.

[0006] As a further improvement of the present invention, the cylindrical shell is also provided with a water inlet, a steam valve pipe, a safety valve pipe, a water outlet pipe, and a liquid level gauge. A water pump is provided at the water inlet, and the water outlet pipe is provided on the second smoke box and connected to the interior of the cylindrical shell.

[0007] As a further improvement of the present invention, a discharge hole is provided at the bottom of the first cigarette box, and an avoidance groove opposite to the groove is provided on the side of the first cigarette box away from the front end plate. In the initial state, the first scraper is located on the side of the groove away from the front end plate. A connecting rod is connected to the first scraper, and the axis of the connecting rod is parallel to the axis of the cylindrical shell. The free end of the connecting rod is connected to a sealing plug, and the sealing plug selectively seals the groove at the bottom of the front end plate; the first driving assembly includes: a first driving rod and a first pull ring, one end of the first driving rod is fixedly connected to the first scraper, and the other end of the first driving rod passes through the front end plate and the first cigarette box in sequence, and extends to the outside of the first cigarette box and is fixedly connected to the first pull ring.

[0008] As a further improvement of the present invention, a limiting plate is provided on the top of the first scraper on a side away from the front end plate for limiting scale.

[0009] As a further improvement of the present invention, the energy-saving gas steam generator further includes: a scraper ring, which is sleeved on the outer wall surface of the furnace, and the bottom of the scraper ring is fixedly connected to the top of the limiting plate.

[0010] As a further improvement of the present invention, the energy-saving gas steam generator also includes: a plurality of guide rods, the plurality of guide rods are arranged at intervals and the axes are parallel to the axis of the cylindrical shell, the guide rods pass through the scraper ring, and the two ends of the guide rods are respectively fixedly connected to the front end plate and the second smoke box.

[0011] As a further improvement of the present invention, a fifth through hole is symmetrically provided on the cylindrical shell about the axis, and a drive pipe is provided at the fifth through hole; the second drive assembly includes: a flexible second drive rod and a second pull ring, the second drive rod is slidably connected in the drive pipe, one end of the second drive rod is fixedly connected to the corresponding second scraper, and the other end passes through to the outside of the drive pipe and is fixedly connected to the second pull ring, and a fixing plate is provided on the top of the drive pipe, and the second drive rod is selectively fixedly connected to the fixing plate.

[0012] As a further improvement of the present invention, the inner wall of the cylindrical shell is provided with two groups of guide seats with arc-shaped structures arranged concentrically with the cylindrical shell, and each group of guide seats is symmetrically arranged on both sides of the corresponding second scraper. The guide seat is provided with a guide groove with an arc-shaped structure on one side facing the corresponding second scraper, and the two sides of the second scraper are slidably connected in the corresponding guide groove.

[0013] As a further improvement of the present invention, the top and bottom of the second scraper are both provided with chamfers.

[0014] As a further improvement of the present invention, a smoke outlet is provided on the second smoke box; the energy-saving gas steam generator also includes: an insulation pipe and an economizer, the insulation pipe is arranged in contact with the outer wall of the cylindrical shell and is arranged close to the top of the cylindrical shell, the insulation pipe is provided with an air inlet and an air outlet, the air inlet is connected to the smoke outlet, and the economizer is arranged at the air outlet.

[0015] The beneficial effects of the present invention are:

[0016] 1. The present invention can increase the heat exchange area between the flue gas ejected from the combustion tube and the moisture inside the cylindrical shell by providing the furnace, the second return smoke pipe and the third return smoke pipe, thereby accelerating the heating of the moisture and facilitating the rapid evaporation of the moisture. In addition, by providing the first scraper, the second scraper and the scraper ring, the scale attached to the inner wall of the cylindrical shell and the scale attached to the furnace can be cleaned, reducing the impact of the scale on the quality of the discharged water vapor, protecting the steam generator, and improving the heat exchange efficiency with the moisture.

[0017] 2. The present invention provides a heat preservation pipe connected to the second smoke box, and the heat preservation pipe is fitted on the outer wall of the cylindrical shell near the top, which can reduce the temperature difference, insulate the inside of the cylindrical shell, and is conducive to saving gas energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the three-dimensional structure of an energy-saving gas steam generator according to an embodiment of the present invention;

[0019] Figure 2 This is a schematic diagram of the main structure of an energy-saving gas steam generator according to an embodiment of the present invention;

[0020] Figure 3 This is a schematic top view of the structure of an energy-saving gas steam generator according to an embodiment of the present invention;

[0021] Figure 4 This is a schematic diagram of a first main cross-sectional structure of an energy-saving gas steam generator according to an embodiment of the present invention;

[0022] Figure 5 This is a schematic diagram of a second main cross-sectional structure of an energy-saving gas steam generator according to an embodiment of the present invention;

[0023] Figure 6 yes Figure 5 Enlarged view of point A in the middle;

[0024] Figure 7This is a schematic diagram of a first main cross-sectional three-dimensional structure of an energy-saving gas steam generator according to an embodiment of the present invention;

[0025] Figure 8 This is a schematic diagram of a second main cross-sectional perspective structure of an energy-saving gas steam generator according to an embodiment of the present invention;

[0026] Figure 9 This is a schematic diagram of a third main cross-sectional structure of an energy-saving gas steam generator according to an embodiment of the present invention;

[0027] Figure 10 yes Figure 9 Enlarged view of point B in the middle;

[0028] Figure 11 yes Figure 9 Enlarged view of point C in the middle;

[0029] Figure 12 This is a schematic side cross-sectional structural diagram of a first type of energy-saving gas steam generator according to an embodiment of the present invention;

[0030] Figure 13 This is a second side cross-sectional structural schematic diagram of an energy-saving gas steam generator according to an embodiment of the present invention.

[0031] In the figure: 1. Cylindrical shell; 11. Groove; 12. Front end plate; 122. First through hole; 123. Second through hole; 13. First smoke box; 131. Discharge hole; 132. Avoidance groove; 14. Second smoke box; 141. Third through hole; 142. Smoke outlet; 16. Drive pipe; 2. Evaporation assembly; 21. Furnace; 22. Second return smoke pipe; 23. Third return smoke pipe; 24. Burner; 25. Smoke return chamber; 251. Fourth through hole; 3. Cleaning assembly; 31. First scraper; 311. Connecting rod; 312. Sealing plug; 313. Limiting plate; 32. First drive assembly; 321. First drive rod; 322. First pull ring; 33. Second scraper; 34. Second drive assembly; 341. Second drive rod; 342. Second pull ring; 343. Fixing plate; 35. Guide seat; 351. Guide groove; 36. Scraper ring; 37. Guide rod; 4. Insulation pipe; 5. Economizer; 6. Water inlet; 7. Steam valve pipe; 8. Water outlet pipe; 9. Safety valve pipe; 100. Liquid level gauge; 110. Feed water pump; 120. Support frame. DETAILED DESCRIPTION

[0032] The subject matter described herein will now be discussed with reference to exemplary embodiments. It should be understood that these embodiments are discussed solely to enable those skilled in the art to better understand and implement the subject matter described herein, and that the functions and arrangements of the elements discussed may be varied without departing from the scope of this specification. Various examples may omit, substitute, or add various processes or components as needed. In addition, features described with respect to some examples may also be combined in other examples.

[0033] like Figures 1-13 As shown, an energy-saving gas steam generator includes a cylindrical shell 1, an evaporation component 2 and a cleaning component 3. Among them, a support frame 120 is fixedly connected to the bottom of the cylindrical shell 1. The cylindrical shell 1 mainly plays the role of installation and support, providing a carrier for installation and support of corresponding components, and can be used to store water. The evaporation component 2 mainly heats the water inside the cylindrical shell 1 to evaporate it into water vapor. The cleaning component 3 is mainly used to clean the scale inside the cylindrical shell 1, reduce the impact of scale on the gas steam generator and the environment, and help improve the heating efficiency of water.

[0034] Specifically, if Figure 1 、 Figure 7 、 Figure 10 and Figure 12 As shown, the bottom of the cylindrical housing 1 is provided with a groove 11 along its axial direction. The groove 11 primarily serves to collect scale. A front end plate 12 is fixedly connected to one end of the cylindrical housing 1. A mounting hole is provided in the middle of the front end plate 12, near the bottom. A plurality of first through holes 122 are provided in the middle of the front end plate 12, and a plurality of second through holes 123 are provided on either side of the front end plate 12. The mounting hole, first through holes 122, and second through holes 123 all serve as mounting and communication points.

[0035] A first cigarette box 13 is fixedly connected to one end of the cylindrical shell 1. A front plate 12 separates the first cigarette box 13 from the interior space of the cylindrical shell 1. A second cigarette box 14 is fixedly connected to the other end of the cylindrical shell 1. A plurality of third through holes 141 are defined on the side of the second cigarette box 14 closest to the cylindrical shell 1. The third through holes 141 communicate with the interior space of the cylindrical shell 1.

[0036] In addition, if Figure 1 、 Figure 2 and Figure 4As shown, the cylindrical shell 1 is also equipped with a water inlet 6, a steam valve pipe 7, a safety valve pipe 9, a water outlet pipe 8, and a liquid level gauge 100. The water inlet 6 is connected to a water pump 110. The water outlet pipe 8 is fixedly connected to the second smoke box 14 and communicates with the interior of the cylindrical shell 1. The water inlet 6 can be located in the middle of the cylindrical shell 1, and the water pump 110 is used to introduce water from an external source into the cylindrical shell 1. The steam valve pipe 7 and the safety valve pipe 9 can both be installed at the top of the cylindrical shell 1. The steam valve pipe 7 is primarily used to control the release of steam from the cylindrical shell 1. The safety valve pipe 9 is primarily used for overpressure protection. When the pressure inside the steam generator exceeds the limit, the safety valve pipe 9 automatically opens to quickly release excess steam, protecting the steam generator. The safety valve pipe 9 also serves as a pressure regulator. The water outlet pipe 8 is primarily used to release moisture from the cylindrical shell 1. The water outlet pipe 8 can be located at the bottom of the second smoke box 14 to facilitate the release of moisture from the cylindrical shell 1. The liquid level meter 100 is mainly used to detect the amount of water inside the cylindrical shell 1. The steam generator may further include a controller for controlling the above-mentioned equipment.

[0037] In addition, if Figure 7 、 Figure 8 and Figure 12 As shown, the evaporation assembly 2 includes a furnace 21, multiple second return flue pipes 22, multiple third return flue pipes 23, and a burner 24. The furnace 21, the second return flue pipes 22, and the third return flue pipes 23 all primarily function as heat exchangers. The burner 24 primarily provides a heat source. The furnace 21 is disposed within the cylindrical housing 1. One end of the furnace 21 is connected to a mounting hole, and the other end is fixedly connected to a flue gas return chamber 25. The flue gas return chamber 25 is fixedly connected to the second flue box 14 via a connecting pipe. A plurality of fourth through holes 251 are defined on a side wall of the flue gas return chamber 25 facing the furnace 21. These fourth through holes 251 correspond one-to-one with the plurality of first through holes 122. The second return flue pipes 22 connect the corresponding first through holes 122 with the fourth through holes 251. The plurality of second through holes 123 correspond one-to-one with the plurality of third through holes 141. The third return flue pipes 23 connect the corresponding second through holes 123 with the third through holes 141. The burner 24 is connected to the first smoke box 13 and is matched with one end of the furnace 21.

[0038] During use, the water supply pump 110 is first used to draw water from the external source into the cylindrical shell 1 through the water inlet 6. When the preset liquid level is reached, the burner 24 is then started, and the burner 24 sprays flames to one end of the furnace 21, so that the flue gas generated by the burner 24 can enter the furnace 21 and perform heat exchange with the moisture inside the cylindrical shell 1, thereby heating the moisture and evaporating it, and the steam can be discharged from the steam valve pipe 7. After flowing out of the furnace 21, the flue gas will enter the flue gas return chamber 25, and then enter the second return flue pipe 22 through the fourth through hole 251. At this time, the flue gas in the second return flue pipe 22 can perform heat exchange with the moisture inside the cylindrical shell 1 through the second return flue pipe 22. After flowing out of the second return smoke pipe 22, the flue gas will enter the first smoke box 13 through the first through hole 122, and then enter the third return smoke pipe 23 through the second through hole 123. At this time, the flue gas in the third return smoke pipe 23 can once again exchange heat with the moisture inside the cylindrical shell 1 through the third return smoke pipe 23. After flowing out of the third return smoke pipe 23, the flue gas will enter the second smoke box 14 through the third through hole 141. The second smoke box 14 is provided with a smoke outlet 142, and the flue gas will be discharged from the smoke outlet 142. In this way, through the arrangement of the furnace 21, the second return smoke pipe 22, and the third return smoke pipe 23, the heat exchange area between the flue gas and the moisture inside the cylindrical shell 1 can be increased, thereby quickly heating and evaporating the moisture.

[0039] In addition, if Figure 5-Figure 11 As shown, the cleaning assembly 3 includes a first scraper 31, a first drive assembly 32, two second scrapers 33 and two second drive assemblies 34. The first scraper 31 is movably arranged inside the groove 11, and the first drive assembly 32 is used to drive the first scraper 31 to move in the groove 11. The two second scrapers 33 are movably arranged on both sides of the first scraper 31, and the second drive assembly 34 is used to drive the corresponding second scrapers 33 to move circumferentially along the inner wall of the cylindrical shell 1.

[0040] Since scale is primarily concentrated in the lower half of the cylindrical housing 1, the second scraper 33 primarily cleans the lower half of the inner wall of the cylindrical housing 1. During use, the two second drive assemblies 34 drive the corresponding second scraper 33 to reciprocate along the inner wall of the cylindrical housing 1, thereby cleaning scale adhered to the inner wall of the cylindrical housing 1. The cleaned scale then slides down the inner wall of the cylindrical housing 1 into the groove 11.

[0041] It should be noted that a discharge hole 131 is provided at the bottom of the first smoke box 13, and the discharge hole 131 is mainly used to discharge the scale after cleaning. A avoidance groove 132 opposite to the groove 11 is provided on the side of the first smoke box 13 away from the front end plate 12. In the initial state, the first scraper 31 is located on the side of the groove 11 away from the front end plate 12. A connecting rod 311 is fixedly connected to the first scraper 31. The axis of the connecting rod 311 is parallel to the axis of the cylindrical shell 1. The free end of the connecting rod 311 is fixedly connected to a sealing plug 312. The sealing plug 312 selectively seals the groove 11 at the bottom position of the front end plate 12. The sealing plug 312 selectively seals the groove 11 at the bottom position of the front end plate 12, that is, the sealing plug 312 can seal the bottom position of the front end plate 12, or it can not seal the bottom position of the front end plate 12. Specifically, when the first scraper 31 is in its initial position, i.e., when no scale cleaning is required, the sealing plug 312 can seal the bottom of the front end plate 12, thereby improving the sealing performance of the cylindrical housing 1 and preventing the outflow of diverted water. The avoidance groove 132 is mainly used to avoid the sealing plug 312 so that it can move freely.

[0042] When the cleaned scale will slide along the inner wall of the cylindrical shell 1 into the groove 11, the first drive assembly 32 is started at this time, and the first drive assembly 32 will drive the first scraper 31 to move toward the discharge hole 131. During the movement of the first scraper 31, the first scraper 31 will drive the sealing plug 312 to move together through the connecting rod 311, that is, the sealing plug 312 will release the seal of the groove 11 at the bottom position of the front end plate 12, so that the scale in the groove 11 will pass through the bottom of the front end plate 12 and enter the discharge hole 131 under the drive of the first scraper 31. After cleaning, the first drive assembly 32 is used to restore the first scraper 31 and the sealing plug 312 to their initial positions.

[0043] Specifically, if Figure 2 and 9 - Figure 11 As shown, the first drive assembly 32 includes a first drive rod 321 and a first pull ring 322. One end of the first drive rod 321 is fixedly connected to the first scraper 31. The other end of the first drive rod 321 passes through the front end plate 12 and the first smoke box 13, extending outside the first smoke box 13 and fixedly connected to the first pull ring 322. It should be noted that the first drive rod 321 can be connected to the front end plate 12 and the first smoke box 13 in a seamless sliding manner to reduce moisture outflow.

[0044] During use, an operator pulls the first pull ring 322 to move. The movement of the first pull ring 322 can drive the first scraper 31 to move via the first driving rod 321 , thereby discharging scale in the groove 11 .

[0045] In addition, if Figure 11 As shown, a limiting plate 313 is provided on the side of the top of the first scraper 31 away from the front end plate 12 to move the scale together when the first scraper 31 moves. When there is a lot of scale in the groove 11, the first scraper 31 may leak out from the top of the first scraper 31 when pushing the scale in the groove 11 to move. By limiting the limiting plate 313, the leakage of scale from the top of the first scraper 31 can be reduced, so that the scale in the groove 11 can be better cleaned. It should be noted that one end of the first drive rod 321 can also be fixedly connected to the limiting plate 313, and the fixed connection method can be a threaded connection for easy loading and unloading. In the drawings of this embodiment, one end of the first drive rod 321 is fixedly connected to the limiting plate 313.

[0046] As an optional embodiment, both sides of the limiting plate 313 may extend to contact the inner wall of the cylindrical shell 1 , so that scale can be blocked over a larger area, thereby better cleaning the scale.

[0047] In addition, if Figure 13 As shown, the energy-saving gas steam generator further includes a scraper ring 36, which is sleeved on the surface of the furnace 21. The inner wall of the scraper ring 36 is in contact with the outer wall of the furnace 21, and the bottom of the scraper ring 36 is fixedly connected to the top of the limit plate 313. In this way, when the first scraper 31 moves, the limit plate 313 can drive the scraper ring 36 to move together. The movement of the scraper ring 36 can scrape off scale on the outer wall of the furnace 21, thereby improving the heat exchange efficiency between the flue gas and water in the furnace 21.

[0048] Further, if Figure 13 As shown, the energy-saving gas steam generator also includes a plurality of guide rods 37, which are arranged at intervals and whose axes are parallel to the axis of the cylindrical shell 1. The guide rods 37 are arranged through the scraper ring 36, and the two ends of the guide rods 37 are fixedly connected to the front end plate 12 and the second smoke box 14 respectively. Among them, the guide rods 37 mainly play the role of guiding and improving stability. The plurality of guide rods 37 are arranged at intervals, which can make the arrangement of the guide rods 37 more comprehensive. The guide rods 37 are arranged through the scraper ring 36, so that the scraper ring 36 can be more stable when moving, thereby better cleaning the scale on the outer wall of the furnace 21.

[0049] In addition, if Figure 1 and Figure 2As shown, fifth through holes are symmetrically provided on both sides of the cylindrical shell 1 about its axis, and a drive pipe 16 is provided at the fifth through hole. The second drive assembly 34 includes a flexible second drive rod 341 and a second pull ring 342. The second drive rod 341 is slidably connected in the drive pipe 16. The flexible second drive rod 341 can be a bendable wire or a bendable plastic rod. One end of the second drive rod 341 is fixedly connected to the corresponding second scraper 33, and the other end passes through the outside of the drive pipe 16 and is fixedly connected to the second pull ring 342. A fixing plate 343 is provided at the top of the drive pipe 16, and the second drive rod 341 is selectively fixedly connected to the fixing plate 343.

[0050] It should be noted that the second drive rod 341 is in sealed sliding connection with the top of the drive pipe 16, which can reduce the dissipation of heat. The second drive rod 341 is selectively fixedly connected to the fixed plate 343, that is, the second drive rod 341 can be fixedly connected to the fixed plate 343, or it can not be fixedly connected to the fixed plate 343. Specifically, in the initial state, the second scraper 33 is located at the highest position that can be reached, which can reduce the adhesion of scale on the second scraper 33, and at this time, the second drive rod 341 is fixedly connected to the fixed plate 343, so that the stability of the second drive rod 341 can be maintained. When it is necessary to clean the scale attached to the inner wall of the cylindrical shell 1, the direct connection between the second drive rod 341 and the fixed plate 343 is released, and the operator manually pulls the second pull ring 342 to drive the corresponding second scraper 33 to move along the inner wall of the cylindrical shell 1, thereby cleaning the scale attached to the inner wall of the cylindrical shell 1.

[0051] In addition, if Figure 5-Figure 7 As shown, the inner wall of the cylindrical housing 1 is provided with two sets of arc-shaped guide seats 35 arranged concentrically with the cylindrical housing 1. The two guide seats 35 in each set are symmetrically arranged on either side of the corresponding second scraper 33. The guide seats 35 have an arc-shaped guide groove 351 on the side facing the second scraper 33. The two sides of the second scraper 33 are slidably connected within the corresponding guide groove 351. By sliding the two sides of the second scraper 33 within the corresponding guide groove 351, the second scraper 33 can move in a directional manner, thereby better cleaning scale adhering to the inner wall of the cylindrical housing 1.

[0052] As an optional embodiment, both the top and bottom of the second scraper 33 are chamfered. The chamfered top of the second scraper 33 reduces the adhesion and accumulation of scale on the top of the second scraper 33. The chamfered bottom of the second scraper 33 makes the bottom of the second scraper 33 sharper, thereby better removing scale attached to the cylindrical inner wall.

[0053] Further, if Figure 1As shown, the energy-saving gas steam generator also includes an insulation pipe 4 and an economizer 5. The insulation pipe 4 is arranged to fit the outer wall of the cylindrical shell 1, and the insulation pipe 4 is arranged near the top of the cylindrical shell 1. The insulation pipe 4 is provided with an air inlet and an air outlet. The air inlet is connected to the smoke outlet 142, and the economizer 5 is arranged at the air outlet. After the flue gas enters the second smoke box 14, it will enter the insulation pipe 4 through the smoke outlet 142. Since the insulation pipe 4 is arranged to fit the outer wall of the cylindrical shell 1, it can play a role in heat preservation of the inside of the cylindrical shell 1. Since the top position of the cylindrical shell 1 is relatively far away from the burner 24, the insulation pipe 4 is arranged near the top of the cylindrical shell 1, which can better play a role in heat preservation and reduce the temperature difference. The economizer 5 can process the flue gas discharged from the air outlet, which is beneficial to environmental protection.

[0054] The above describes the embodiments of this embodiment, but this embodiment is not limited to the above specific implementation methods. The above specific implementation methods are merely illustrative and not restrictive. Ordinary technicians in this field can also make many forms based on the inspiration of this embodiment, all of which are protected by this embodiment.

Claims

1. An energy-saving gas steam generator, characterized in that: include: A cylindrical shell (1) is provided with a groove (11) at its bottom along the axial direction, a front end plate (12) is provided at one end thereof, a mounting hole, a plurality of first through holes (122) and a plurality of second through holes (123) are provided on the front end plate (12), one end of the cylindrical shell (1) is connected to a first smoke box (13), and the other end is connected to a second smoke box (14), and a plurality of third through holes (141) are provided on the second smoke box (14); An evaporation assembly (2) comprises: a furnace (21), a plurality of second return smoke pipes (22), a plurality of third return smoke pipes (23) and a burner (24); the furnace (21) is arranged inside a cylindrical shell (1), one end of which is connected to a mounting hole, and the other end of which is connected to a smoke return chamber (25); a plurality of fourth through holes (251) are provided on the smoke return chamber (25); the second return smoke pipes (22) are connected to the corresponding first through holes (122) and the fourth through holes (251); the third return smoke pipes (23) are connected to the corresponding second through holes (123) and the third through holes (141); the burner (24) is connected to the first smoke box (13) and cooperates with one end of the furnace (21); A cleaning assembly (3) comprises a first scraper (31), a first drive assembly (32), two second scrapers (33) and two second drive assemblies (34), wherein the first scraper (31) is movably arranged inside the groove (11), the first drive assembly (32) is used to drive the first scraper (31) to move inside the groove (11), the two second scrapers (33) are movably arranged on both sides of the first scraper (31), and the second drive assembly (34) is used to drive the corresponding second scrapers (33) to move circumferentially along the inner wall of the cylindrical shell (1).

2. The energy-saving gas steam generator according to claim 1, characterized in that: The cylindrical shell (1) is also provided with a water inlet (6), a steam valve pipe (7), a safety valve pipe (9), a water outlet pipe (8), and a liquid level gauge (100). A water supply pump (110) is provided at the water inlet (6). The water outlet pipe (8) is provided on the second smoke box (14) and is in communication with the interior of the cylindrical shell (1).

3. The energy-saving gas steam generator according to claim 2, characterized in that: A discharge hole (131) is provided at the bottom of the first smoke box (13), and a avoidance groove (132) opposite to the groove (11) is provided on the side of the first smoke box (13) away from the front end plate (12). In an initial state, the first scraper (31) is located on the side of the groove (11) away from the front end plate (12). A connecting rod (311) is connected to the first scraper (31), and the axis of the connecting rod (311) is parallel to the axis of the cylindrical shell (1). A sealing plug (312) is connected to the free end of the connecting rod (311), and the sealing plug (312) selectively seals the groove (11) at the bottom of the front end plate (12). The first driving assembly (32) includes: a first driving rod (321) and a first pull ring (322), one end of the first driving rod (321) is fixedly connected to the first scraper (31), and the other end of the first driving rod (321) passes through the front end plate (12) and the first cigarette box (13) in sequence, and extends to the outside of the first cigarette box (13) and is fixedly connected to the first pull ring (322).

4. The energy-saving gas steam generator according to claim 3, characterized in that: A limiting plate (313) is provided on the top of the first scraper (31) at a side away from the front end plate (12) for limiting scale.

5. The energy-saving gas steam generator according to claim 4, characterized in that: The energy-saving gas steam generator further comprises a scraper ring (36), the scraper ring (36) being sleeved on the outer wall surface of the furnace (21), and the bottom of the scraper ring (36) being fixedly connected to the top of the limiting plate (313).

6. The energy-saving gas steam generator according to claim 5, characterized in that: The energy-saving gas steam generator further comprises: a plurality of guide rods (37), the plurality of guide rods (37) being arranged at intervals and having axes parallel to the axis of the cylindrical shell (1), the guide rods (37) being arranged to pass through the scraper ring (36), and the two ends of the guide rods (37) being fixedly connected to the front end plate (12) and the second smoke box (14), respectively.

7. The energy-saving gas steam generator according to claim 2, characterized in that: A fifth through hole is provided on the cylindrical shell (1) symmetrically about the axis, and a driving pipe (16) is provided at the fifth through hole; the second driving assembly (34) comprises: a flexible second driving rod (341) and a second pull ring (342), the second driving rod (341) is slidably connected in the driving pipe (16), one end of the second driving rod (341) is fixedly connected to the corresponding second scraper (33), and the other end passes through the outside of the driving pipe (16) and is fixedly connected to the second pull ring (342), a fixing plate (343) is provided at the top of the driving pipe (16), and the second driving rod (341) is selectively fixedly connected to the fixing plate (343).

8. The energy-saving gas steam generator according to claim 7, characterized in that: The inner wall of the cylindrical shell (1) is provided with two groups of guide seats (35) of an arc structure arranged concentrically with the cylindrical shell (1), and each group of guide seats (35) is symmetrically arranged on both sides of the corresponding second scraper (33). The guide seats (35) are provided with an arc-shaped guide groove (351) on one side facing the corresponding second scraper (33), and the two sides of the second scraper (33) are slidably connected in the corresponding guide groove (351).

9. The energy-saving gas steam generator according to claim 8, characterized in that: The top and bottom of the second scraper (33) are both provided with chamfers.

10. The energy-saving gas steam generator according to claim 1, characterized in that: The second smoke box (14) is provided with a smoke outlet (142); The energy-saving gas steam generator further comprises: an insulation pipe (4) and an economizer (5); the insulation pipe (4) is arranged in contact with the outer wall of the cylindrical shell (1) and is arranged close to the top of the cylindrical shell (1); an air inlet and an air outlet are arranged on the insulation pipe (4); the air inlet is communicated with the smoke outlet (142); and the economizer (5) is arranged at the air outlet.

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