Energy saver for gas boiler

Abstract

The application discloses an economizer for a gas boiler and relates to the technical field of economizers. The application comprises the following: an outer shell, a cladding layer being formed on the wall thickness of the outer shell, a water inlet pipe and a water outlet pipe being installed on the outer shell and being communicated with the cladding layer, and an air inlet and an air outlet being formed on the outer shell; a closure being installed in the outer shell, the closure being located between the air inlet and the air outlet and being used for shielding the communication between the air inlet and the air outlet. The closure is installed in the outer shell, when flue gas enters the outer shell, the flue gas cannot be discharged outward through the cooperation of the closure, the time of the flue gas staying in the outer shell is increased, the water in the cladding layer is heated, when the closure is removed after a period of time, the shielding of the closure is removed through a removal element, the flue gas can be discharged from the air outlet, the absorption of heat in the flue gas by the device is increased, and the practicability of the device is increased.

Description

Technical Field

[0001] This application relates to the field of energy-saving device technology, specifically to energy-saving devices for gas-fired boilers. Background Technology

[0002] Industrial boilers are divided into two types: steam boilers, which are used for power generation or gas supply, and gas-fired boilers, which are generally waste heat boilers used to recover waste heat. The boiler's economizer lowers the temperature of the flue gas produced by combustion, and the heat removed by the economizer is returned to the boiler, which is equivalent to raising the boiler's feedwater temperature.

[0003] Existing economizers emit flue gas and absorb the heat energy in the emitted flue gas through a transducer structure. However, the flue gas passes directly through the inside of the economizer during emission, resulting in a short residence time inside the economizer. This leads to insufficient heat exchange by the transducer structure, reducing the temperature at which the heat returns to the boiler and causing low feedwater temperature. To address this issue, this application provides an economizer for gas-fired boilers. Summary of the Invention

[0004] The purpose of this application is to provide an energy-saving device for gas boilers in order to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this application specifically adopts the following technical solution:

[0006] Energy-saving devices for gas-fired boilers include:

[0007] The outer shell has a sandwich layer in its wall thickness. A water inlet pipe and a water outlet pipe are installed on the outer shell and are connected to the sandwich layer. An air inlet and an air outlet are provided on the outer shell.

[0008] A sealing element is installed inside the housing. The sealing element is located between the air inlet and the air outlet and is used to block the connection between the air inlet and the air outlet.

[0009] The release element is installed inside the housing and is connected to the sealing element. The release element is used to release the obstruction of the sealing element at the connection between the air inlet and the air outlet.

[0010] Furthermore, the closure includes:

[0011] A baffle is installed inside the housing. The area of ​​the baffle facing the air inlet is the same as the cross-sectional area of ​​the housing in the same direction. An air vent is provided on the baffle, and a filter plate is installed on the air vent.

[0012] The blocking plate, connected to the release component, is used to block the vent, while the release component is used to move the blocking plate closer to or away from the vent.

[0013] Furthermore, the blocking plate is located on the side of the baffle closer to the air outlet, and the releasing component includes:

[0014] An electric actuator is installed inside the housing, and the telescopic end of the electric actuator is connected to the end plate;

[0015] An inclined block is mounted on the telescopic end of the electric actuator via a contact spring. A striking rod is slidably mounted on the housing, and a protrusion is mounted on the striking rod. A connecting spring is installed between the striking rod and the housing. The axis of the contact spring is perpendicular to the axis of the connecting spring. The inclined block is used to abut against the protrusion.

[0016] When the wedge block and the convex block come into contact, the wedge block causes the convex block to move, or causes the wedge block and the convex block to separate.

[0017] Furthermore, brush bristles are installed on the side of the baffle plate near the filter plate, and a dust collection box is installed on the baffle plate, with the dust collection box located at the bottom of the filter plate.

[0018] Furthermore, an air collecting hood is installed on the baffle, and a filter plate is installed on the air collecting hood. The diameter of the air collecting hood gradually decreases from one end toward the air inlet to the other end. An expansion panel that contacts the baffle is installed on the side of the air collecting hood near the air inlet. A groove for inserting a dust collection box is provided on the air collecting hood. When the dust collection box is inserted into the groove, the dust collection box is located on the side of the baffle near the air outlet and contacts the baffle.

[0019] Furthermore, the blocking plate is rotatably mounted with a rotating rod, which has a threaded groove. The filter plate is equipped with a slider that slides in cooperation with the threaded groove. A cleaning plate is bolted to the free end of the rotating rod, and the cleaning plate is also equipped with bristles.

[0020] Furthermore, the expansion panel is equipped with a plug rod, the baffle is provided with a plug hole for inserting the plug rod, the dust collection box is equipped with a plug block, and the air collection hood is provided with a receiving groove for accommodating the plug block.

[0021] Furthermore, a protective shell is installed inside the outer casing, and the electric actuator is installed inside the protective shell.

[0022] Furthermore, multiple fins are installed in the inner cavity of the outer shell near the air inlet.

[0023] Furthermore, a pad is installed inside the outer casing, and a sliding groove is formed on the pad. A sliding block that slides in cooperation with the sliding groove is installed on the striking rod.

[0024] The beneficial effects of this application are as follows: This application has a sealing component installed inside the housing. When the flue gas enters the housing, the sealing component prevents the flue gas from being discharged outward, increasing its residence time inside the housing and heating the water in the interlayer. After being sealed for a period of time, the sealing component is released by the release component, allowing the flue gas to be discharged from the outlet. This increases the absorption of heat from the flue gas by the device and increases the practicality of the device. Attached Figure Description

[0025] Figure 1 This is a three-dimensional structural diagram of this application;

[0026] Figure 2 This is a schematic diagram of the structure of the closing and releasing parts in this application;

[0027] Figure 3 This is yet another structural diagram of the closing and releasing parts of this application;

[0028] Figure 4 This application Figure 1 Exploded view of the middle structure;

[0029] Figure 5 This application Figure 2 Exploded view of the middle structure;

[0030] Figure 6 This application Figure 3 Exploded view of the middle structure;

[0031] Figure 7 This application Figure 1 Three-dimensional sectional view of the structure;

[0032] Figure 8 This application Figure 7 Enlarged view of point A in the middle;

[0033] Reference numerals: 1. Outer shell; 101. Interlayer; 102. Water inlet pipe; 103. Water outlet pipe; 104. Air inlet; 105. Air outlet; 2. Sealing component; 201. Baffle; 202. Vent; 203. Filter plate; 204. Blocking plate; 3. Release component; 301. Electric push rod; 302. Inclined block; 303. Striking rod; 304. Protrusion; 305. Connecting spring; 306. Contact spring; 4. Brush bristles; 5. Dust collection box; 6. Air collection hood; 7. Expanding panel; 8. Groove; 9. Rotating rod; 10. Threaded groove; 11. Sliding block; 12. Cleaning plate; 13. Insert rod; 14. Insertion hole; 15. Insertion block; 16. Receiving groove; 17. Protective shell; 18. Fin; 19. Pad; 20. Slide groove; 21. Sliding block. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings.

[0035] like Figure 1 , Figure 4 and Figure 7 As shown, an energy-saving device for a gas-fired boiler according to one embodiment of this application includes:

[0036] The outer shell 1 has a sandwich layer 101 on its wall thickness. A water inlet pipe 102 and a water outlet pipe 103 are installed on the outer shell 1. The water inlet pipe 102 and the water outlet pipe 103 are connected to the sandwich layer 101. An air inlet 104 and an air outlet 105 are provided on the outer shell 1. The water inlet pipe 102 is connected to the factory water source and is used to fill the sandwich layer 101 with water, which is then discharged through the water outlet pipe 103.

[0037] The air inlet 104 is connected to the boiler outlet pipe. The flue gas enters the outer shell 1 through the air inlet 104 and is then discharged from the outlet 105.

[0038] The sealing component 2 is installed inside the outer shell 1. The sealing component 2 is located between the air inlet 104 and the air outlet 105. The sealing component 2 is used to block the connection between the air inlet 104 and the air outlet 105. When the flue gas enters the outer shell 1, the air outlet 105 is blocked by the sealing component 2, so that the flue gas cannot be discharged. This allows the flue gas to have enough time to heat the water in the interlayer 101, increasing the utilization rate of the heat in the flue gas.

[0039] Release component 3 is installed inside the housing 1. Release component 3 is connected to the sealing component 2. Release component 3 is used to release the obstruction of the sealing component 2 at the connection between the air inlet 104 and the air outlet 105. When the flue gas stays in the housing 1 for a period of time and the heat is consumed, the obstruction of the sealing component 2 is released by the release component 3, so that the flue gas can be discharged normally.

[0040] Compared with the prior art, a sealing component 2 is installed inside the outer shell 1. When the flue gas enters the outer shell 1, the sealing component 2 prevents the flue gas from being discharged outward, increasing the time it stays inside the outer shell 1 and heating the water in the interlayer 101. After being sealed for a period of time, the sealing component 3 releases the obstruction of the sealing component 2, allowing the flue gas to be discharged from the outlet 105. This increases the device's absorption of heat from the flue gas and enhances the device's practicality.

[0041] like Figure 4 and Figure 5 As shown, in some embodiments, the closure 2 includes:

[0042] A baffle 201 is installed inside the outer casing 1. The area of ​​the side of the baffle 201 facing the air inlet 104 is the same as the cross-sectional area of ​​the outer casing 1 in the same direction. An air vent 202 is provided on the baffle 201, and a filter plate 203 is installed on the air vent 202. The baffle 201 is located between the air inlet 104 and the air outlet 105, and it isolates the inner cavity of the outer casing 1. Figure 7 As shown, when the flue gas enters the outer casing 1, it can only move towards the outlet 105 through the vent 202. The dust in the flue gas is blocked by the filter plate 203, which facilitates the subsequent discharge of the flue gas and increases the practicality of the device.

[0043] The blocking plate 204 is connected to the release component 3. The blocking plate 204 is used to block the vent 202, and the release component 3 is used to move the blocking plate 204 closer to or away from the vent 202. When it is necessary to absorb the heat in the flue gas, the blocking plate 204 blocks the vent 202 through the cooperation of the release component 3, so that the flue gas is located in the inner cavity of the outer shell 1 near the air inlet 104, so that the heat in the flue gas is absorbed by the water in the interlayer 101. After absorption for a period of time, the blocking plate 204 moves away from the vent 202 through the cooperation of the release component 3, so that the flue gas can move through the vent 202 to the air outlet 105, thereby allowing the flue gas to be discharged, thus increasing the utilization rate of the flue gas by the device.

[0044] like Figure 3 and Figure 6 As shown, in some embodiments, the blocking plate 204 is located on the side of the baffle 201 near the air outlet 105, and the release component 3 includes:

[0045] Electric actuator 301 is installed inside housing 1. The telescopic end of electric actuator 301 is connected to baffle plate 204. Electric actuator 301 is also located on the side of baffle plate 201 near air outlet 105, so that when flue gas passes through electric actuator 301, the heat in the flue gas is completely consumed, and after the dust is filtered by filter plate 203, the flue gas has little impact on electric actuator 301.

[0046] The inclined block 302 is mounted on the telescopic end of the electric actuator 301 via a contact spring 306, the axis of which is perpendicular to the telescopic direction of the electric actuator 301;

[0047] A striking rod 303 is slidably mounted on the outer casing 1. A protrusion 304 is mounted on the striking rod 303. A connecting spring 305 is installed between the striking rod 303 and the outer casing 1. The axis of the contact spring 306 is perpendicular to the axis of the connecting spring 305. An inclined block 302 is used to abut against the protrusion 304. The protrusion 304 is mounted on the side wall of the striking rod 303. Since the baffle 201 is installed inside the outer casing 1, the heat on the baffle 201 can also be transferred to the interlayer 101 to heat the water. When the striking rod 303 slides, its end strikes the baffle 201, causing the baffle 201 to vibrate, reducing the possibility of dust adhering to the baffle 201 and reducing the impact of dust on heat exchange.

[0048] When the inclined block 302 abuts against the protrusion 304, the inclined block 302 causes the protrusion 304 to move, or causes the inclined block 302 to separate from the protrusion 304. The shape of the protrusion 304 is as follows: Figure 3 As shown, it has inclined surfaces on both sides of the inclined block 302;

[0049] In use, when the electric actuator 301 moves the blocking plate 204, it also moves the inclined block 302. When it approaches the baffle 201, the inclined block 302 abuts against the protrusion 304, causing the protrusion 304 to push the striking rod 303. When it abuts against the baffle 201, it can no longer slide, so the inclined block 302 is guided by the inclined surface of the protrusion 304, causing the inclined block 302 to move away from the protrusion 304 and pass by the protrusion 304. During the process, the abutment spring 306 is compressed. When it moves to the other side of the protrusion 304, the abutment spring 306 resets, pushing the inclined block 302 to reset.

[0050] When the electric actuator 301 moves away from the baffle 201, the inclined block 302 moves to the point where it contacts the protrusion 304. This first causes the protrusion 304 and the striking rod 303 to move away from the baffle 201. When the striking rod 303 slides to its maximum distance, the connecting spring 305 is compressed to its maximum value. The inclined block 302 then contacts the protrusion 304 again, causing the inclined block 302 to repeat the above process. This allows the inclined block 302 to pass through the protrusion 304. After the inclined block 302 passes through the protrusion 304, the connecting spring 305 returns to its original position, pushing the striking rod 303 towards the baffle 201. This causes the striking rod 303 to strike the baffle 201, resulting in vibration on the baffle 201. This reduces the possibility of dust adhering to the baffle 201 and increases the practicality of the device.

[0051] like Figure 4 and Figure 5As shown, in some embodiments, a brush bristle 4 is installed on the side of the blocking plate 204 near the filter plate 203, and a dust collection box 5 is installed on the baffle 201. The dust collection box 5 is located at the bottom of the filter plate 203. When the electric push rod 301 moves the blocking plate 204 close to the filter plate 203, the brush bristle 4 on the blocking plate 204 is inserted into the filter holes of the filter plate 203 to clean the dust in the filter holes, reducing the possibility of the filter plate 203 being blocked and increasing the practicality of the device. Since the dust collection box 5 is located at the bottom of the filter plate 203, after the dust is cleaned, the dust falls into the dust collection box 5 by gravity, which facilitates the subsequent cleaning of the device and increases the practicality of the device.

[0052] like Figure 4 , Figure 5 and Figure 7 As shown, in some embodiments, a collecting hood 6 is installed on the baffle 201, and a filter plate 203 is installed on the collecting hood 6. The diameter of the collecting hood 6 gradually decreases from one end toward the air inlet 104 to the other end. The structure of the collecting hood 6 increases the speed of the flue gas when it passes through the baffle 201, thereby increasing the speed of flue gas emission.

[0053] An expansion panel 7 is installed on the side of the air collector hood 6 near the air inlet 104, which contacts the baffle 201. The air collector hood 6 has a groove 8 for inserting the dust collection box 5. When the dust collection box 5 is inserted into the groove 8, the dust collection box 5 is located on the side of the baffle 201 near the air outlet 105 and contacts the baffle 201. In use, the slot of the air collector hood 6 is at the air vent 202. After the air collector hood 6 is inserted into the air vent 202, the expansion panel 7 contacts the baffle 201. Then the dust collection box 5 is inserted into the groove 8, so that the expansion panel 7 and the dust collection box 5 form a clamping structure for the baffle 201, so that the air collector hood 6 is connected to the baffle 201, and the installation of the air collector hood 6 is completed. When it is necessary to disassemble, first pull the dust collection box 5 out of the groove 8, and then pull the air collector hood 6 out of the air vent 202 to complete the disassembly, so that the filter plate 203 can be cleaned.

[0054] When in use, the dust collection box 5 can not only collect dust, but also serve as a clamping mechanism to fix the air collecting cover 6, thus increasing the practicality of the dust collection box 5.

[0055] like Figure 5 , Figure 6 and Figure 8 As shown, in some embodiments, a rotating rod 9 is rotatably mounted on the baffle plate 204. A threaded groove 10 is formed on the rotating rod 9. A slider 11 that slides in cooperation with the threaded groove 10 is mounted on the filter plate 203. A cleaning plate 12 is bolted to the free end of the rotating rod 9. Brush bristles 4 are also mounted on the cleaning plate 12. The cleaning plate 12 is located on the side of the baffle plate 201 near the air inlet 104. The threaded groove 10 is shaped as follows: Figure 5As shown, the filter plate 203 has a channel that is movable and cooperates with the rotating rod 9. The slider 11 is installed in the channel, and the rotating rod 9 can rotate and slide in the channel.

[0056] When the electric actuator 301 moves the blocking plate 204 closer to or further away from the filter plate 203, the slider 11 slides in the threaded groove 10 and pushes the inner wall of the threaded groove 10, causing the rotating rod 9 to rotate. This, in turn, causes the cleaning plate 12 to rotate as it moves closer to or further away from the filter plate 203. As it approaches the filter plate 203, it rotates, causing the bristles 4 on it to brush and clean the surface of the filter plate 203, further reducing the possibility of the filter plate 203 being blocked and increasing the practicality of the device.

[0057] like Figure 3 , Figure 5 and Figure 6 As shown, in some embodiments, a rod 13 is installed on the expansion panel 7, a hole 14 for inserting the rod 13 is opened on the baffle 201, a block 15 is installed on the dust collection box 5, and a receiving groove 16 for accommodating the block 15 is opened on the air collection hood 6. When the air collection hood 6 is installed, the air collection hood 6 is positioned by the cooperation of the hole 14 and the rod 13, so that when the air collection hood 6 is installed in the baffle 201, the groove 8 is located at the bottom of the filter plate 203, and the rod 13 is restricted by the hole 14, so that the air collection hood 6 cannot rotate in the air vent 202, which increases the stability of the air collection hood 6 during use.

[0058] When installing the ash collection box 5, the insert block 15 is inserted into the receiving groove 16 to connect the ash collection box 5 with the ash collection box 5, which increases the contact area between the two and thus increases the connection strength of the ash collection box 5.

[0059] like Figure 5 As shown, in some embodiments, a protective shell 17 is installed inside the outer shell 1, and the electric actuator 301 is installed inside the protective shell 17. During use, the electric actuator 301 is protected by the protective shell 17, which reduces the possibility of the electric actuator 301 coming into contact with the flue gas, thereby reducing the impact of the flue gas on the electric actuator 301 and increasing the service life of the electric actuator 301.

[0060] like Figure 7 As shown, in some embodiments, multiple fins 18 are installed in the inner cavity of the outer shell 1 near the air inlet 104. In use, the fins 18 increase the contact area between the inside of the outer shell 1 and the flue gas, thereby increasing the absorption rate of heat from the flue gas by the outer shell 1 and increasing the practicality of the device.

[0061] like Figure 2 , Figure 3 and Figure 6As shown, in some embodiments, a pad 19 is installed inside the housing 1, and a groove 20 is provided on the pad 19. A sliding block 21 that slides in conjunction with the groove 20 is installed on the striking rod 303. The pad 19 and the striking rod 303 slide in conjunction, and when in use, the side wall of the sliding block 21 is restricted by the inner wall of the groove 20, so that the striking rod 303 can only slide in a straight line, which increases the stability of the striking rod 303 when sliding.

[0062] The above description of the disclosed embodiments enables those skilled in the art to make or use this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An energy-saving device for gas-fired boilers, characterized in that, include: The outer shell (1) has a sandwich layer (101) on its wall thickness. A water inlet pipe (102) and a water outlet pipe (103) are installed on the outer shell (1). Both the water inlet pipe (102) and the water outlet pipe (103) are connected to the sandwich layer (101). An air inlet (104) and an air outlet (105) are provided on the outer shell (1). A sealing element (2) is installed inside the housing (1). The sealing element (2) is located between the air inlet (104) and the air outlet (105). The sealing element (2) is used to block the connection between the air inlet (104) and the air outlet (105). Release component (3) is installed inside the housing (1). Release component (3) is connected to the sealing component (2). Release component (3) is used to release the obstruction of the sealing component (2) at the connection between the air inlet (104) and the air outlet (105). The closure (2) includes: A baffle (201) is installed inside the outer shell (1). The area of ​​the baffle (201) facing the air inlet (104) is the same as the cross-sectional area of ​​the outer shell (1) in the same direction. An air vent (202) is provided on the baffle (201), and a filter plate (203) is installed on the air vent (202). The blocking plate (204) is connected to the release component (3). The blocking plate (204) is used to block the vent (202), and the release component (3) is used to move the blocking plate (204) closer to or away from the vent (202). The blocking plate (204) is located on the side of the baffle (201) near the air outlet (105), and the release component (3) includes: An electric actuator (301) is installed inside the housing (1), and the telescopic end of the electric actuator (301) is connected to the blocking plate (204); An inclined block (302) is mounted on the telescopic end of an electric actuator (301) via a contact spring (306). A striking rod (303) is slidably mounted on the housing (1). A protrusion (304) is mounted on the striking rod (303). A connecting spring (305) is installed between the striking rod (303) and the housing (1). The axis of the contact spring (306) is perpendicular to the axis of the connecting spring (305). The inclined block (302) is used to abut against the protrusion (304). When the inclined block (302) and the protrusion (304) come into contact, the inclined block (302) causes the protrusion (304) to move, or causes the inclined block (302) and the protrusion (304) to separate. The bristles (4) are installed on the side of the baffle (204) near the filter plate (203), and the dust collection box (5) is installed on the baffle (201). The dust collection box (5) is located at the bottom of the filter plate (203). A collecting hood (6) is installed on the baffle (201), and a filter plate (203) is installed on the collecting hood (6). The diameter of the collecting hood (6) gradually decreases from one end toward the air inlet (104) to the other end. An expansion panel (7) that contacts the baffle (201) is installed on the side of the collecting hood (6) near the air inlet (104). A groove (8) for inserting a dust collection box (5) is provided on the collecting hood (6). When the dust collection box (5) is inserted into the groove (8), the dust collection box (5) is located on the side of the baffle (201) near the air outlet (105) and contacts the baffle (201).

2. The energy-saving device for gas-fired boilers according to claim 1, characterized in that, The blocking plate (204) is rotatably mounted with a rotating rod (9), and a threaded groove (10) is provided on the rotating rod (9). A slider (11) that slides with the threaded groove (10) is installed on the filter plate (203). A cleaning plate (12) is connected to the free end of the rotating rod (9) by bolts. A brush (4) is also installed on the cleaning plate (12).

3. The energy-saving device for gas-fired boilers according to claim 2, characterized in that, The expansion panel (7) is equipped with a plug rod (13), the baffle (201) has a hole (14) for inserting the plug rod (13), the dust collection box (5) is equipped with a plug block (15), and the air collection hood (6) has a receiving groove (16) for accommodating the plug block (15).

4. The energy-saving device for gas-fired boilers according to claim 3, characterized in that, A protective shell (17) is installed inside the outer shell (1), and an electric actuator (301) is installed inside the protective shell (17).

5. The energy-saving device for gas-fired boilers according to claim 4, characterized in that, Multiple fins (18) are installed in the inner cavity of the outer shell (1) near the air inlet (104).

6. The energy-saving device for gas-fired boilers according to claim 5, characterized in that, A pad (19) is installed inside the outer shell (1), and a groove (20) is provided on the pad (19). A sliding block (21) that slides in cooperation with the groove (20) is installed on the striking rod (303).

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