Waste heat recovery equipment of energy-saving gas-fired boiler

Abstract

The waste heat recovery equipment of the energy-saving gas-fired boiler comprises a base, a connecting pipe and a smoke exhaust pipe, a cavity is formed in the base, the bottom of the base is open, and a moving assembly convenient for pushing the base to move is arranged in the base; a waste heat recoverer is fixedly arranged on the top of the base, and a connecting pipe is fixedly arranged on one side of the waste heat recoverer in a communicating mode; a first butt-joint piece is arranged on one side of the connecting pipe, a second butt-joint piece is arranged on one side of the smoke exhaust pipe, and the first butt-joint piece and the second butt-joint piece are communicated in an opposite mode by arranging a clamping piece. After the connecting pipe is right opposite to the smoke exhaust pipe, fitting installation of the connecting pipe and the smoke exhaust pipe can be automatically completed only by rotating the clamping piece, time and labor are saved, and therefore the workload of workers is reduced while installation operation is simplified.

Description

Technical Field

[0001] This utility model belongs to the field of waste heat recovery technology, specifically relating to a waste heat recovery device for an energy-saving gas boiler. Background Technology

[0002] A boiler is a closed container used to heat water or other fluids by burning fuel or other heat sources. During operation, boilers emit flue gas containing a significant amount of heat energy, which requires waste heat recovery devices to remove. Existing waste heat recovery devices are typically installed on the boiler's exhaust pipes, usually secured with multiple bolts and nuts, making installation cumbersome and labor-intensive.

[0003] A patent with publication number CN211716603U discloses an energy-saving waste heat recovery device for a gas-fired boiler. The device includes a waste heat recovery unit, a flue pipe, a first fixed plate, a second fixed plate, bolts, nuts, a first handle, a first threaded shaft, and a first slider. When connecting the flue pipe to the inlet pipe of the waste heat recovery unit, the first and second fixed plates are first installed on the flue pipe and secured with bolts and nuts. Then, rotating the first handle rotates the first threaded shaft, which in turn causes the first fixed plate to slide via the first slider, thus ensuring complete contact between the inlet pipe of the waste heat recovery unit and the flue pipe.

[0004] However, the above solution requires not only pre-fixing the first and second fixing plates, but also rotating the first handle to move the first fixing plate after they are fixed. Furthermore, both the fixing of the first and second fixing plates and the movement of the first fixing plate are performed through threaded connections. Each installation requires manual rotation of the nut and the first handle multiple times, making the process cumbersome and laborious, resulting in a low level of automation. Utility Model Content

[0005] To address the problems existing in the background technology, this utility model provides a waste heat recovery device for an energy-saving gas boiler.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A waste heat recovery device for an energy-saving gas boiler includes a base, a connecting pipe, and a flue pipe. The base has an internal cavity and an open bottom. A movable component is provided inside the base to facilitate its movement. A waste heat recovery device is fixedly mounted on the top of the base, and a connecting pipe is fixedly connected to one side of the waste heat recovery device. A first connecting member is provided on one side of the connecting pipe, and a second connecting member is provided on one side of the flue pipe. The first and second connecting members are connected to each other by a snap-fit ​​connector.

[0008] Furthermore, the movable component includes a movable plate, which is both vertically slidably positioned within the cavity and rotatably mounted on a lead screw, with the movable plate and lead screw being threadedly connected. Several pulleys are rotatably mounted on the bottom of the movable plate, and the top of the lead screw is rotatably connected to the inner top wall of the base. A second gear is fixedly fitted onto the outer surface of the lead screw. A motor is fixedly mounted on the inner top wall of the base, and a first gear is fixedly mounted on the motor's output shaft, with the first gear meshing with the second gear for transmission. Several guide rods are fixedly mounted vertically within the base, each guide rod slidingly engaged with the movable plate, and the top of each guide rod is fixedly connected to the inner top wall of the base.

[0009] Furthermore, the first docking component includes a first fixing plate, which is fixedly sleeved on the outer surface of the connecting pipe. Two limiting seats are fixedly provided on one side of the first fixing plate, and each limiting seat has a limiting groove and several positioning holes.

[0010] Furthermore, the second docking component includes a second fixing plate, which is fixedly sleeved on the outer surface of the exhaust pipe, and the second fixing plate is arranged facing the first fixing plate.

[0011] Furthermore, the snap-fit ​​component includes a limiting plate, two limiting plates are rotatably mounted on the second fixed plate, the limiting plates correspond one-to-one with the limiting grooves, and each limiting plate is engaged with the corresponding limiting groove in a transmission snap-fit ​​manner; each of the limiting plates is fixedly connected to the rotating plate through a connecting post, and a clearance groove is opened on the second fixed plate, the clearance groove corresponding one-to-one with the connecting post; positioning beads are fixedly installed on the outer surface of the limiting plate, the number of positioning beads is equal to the number of positioning holes and they are set one-to-one.

[0012] Furthermore, the first docking component includes a fourth fixing plate, which is fixedly sleeved on the outer surface of the connecting pipe. Two first clamping plates are fixedly disposed on the outer surface of the fourth fixing plate. Each first clamping plate is fixedly provided with a protrusion and has several positioning holes.

[0013] Furthermore, the second docking component has a third fixing plate, which is fixedly sleeved on the outer surface of the exhaust pipe. Two second clamping plates are fixedly installed on the outer surface of the third fixing plate. The second clamping plates are fixedly provided with protrusions and positioning holes. The first clamping plates and the second clamping plates correspond one-to-one, and each first clamping plate is symmetrical to the center of the corresponding second clamping plate.

[0014] Furthermore, the snap-fit ​​component includes a slot plate, two connecting plates are fixedly mounted on the outer surface of the fourth fixing plate, support columns are fixedly mounted on opposite sides of the two connecting plates, and slot plates are rotatably mounted on opposite sides of the two support columns; each slot plate has two grooves, and the two grooves on the same slot plate are symmetrically centered; the number of grooves and protrusions are equal and correspond one-to-one, each groove is adapted to the corresponding protrusion and the two are snap-fitted together; each slot plate is fixedly mounted with positioning beads, the number of positioning beads and positioning holes are equal and correspond one-to-one and snap-fitted together.

[0015] This application has the following beneficial effects:

[0016] 1. Once the connecting pipe and the exhaust pipe are aligned, simply rotate the clamp to automatically complete the fitting and installation of the connecting pipe and the exhaust pipe, saving time and effort, thereby simplifying the installation operation and reducing the workload of the staff.

[0017] 2. Simply starting the motor is enough to slide the moving plate downwards, causing the pulleys to extend from the base, making it easy for workers to move the waste heat recovery unit. The entire process is simple to operate, requires less effort, and further improves the automation level of the device. Attached Figure Description

[0018] The above and other objects, features, and advantages of the present invention will become readily understood by reading the following detailed description of exemplary embodiments with reference to the accompanying drawings. In the drawings, several embodiments of the present invention are shown by way of example and not limitation, and like or corresponding reference numerals denote like or corresponding parts, wherein:

[0019] Figure 1 This is a three-dimensional structural diagram of Embodiment 1 of the present utility model;

[0020] Figure 2 This is a schematic diagram of the structure of the mobile component of this utility model;

[0021] Figure 3 This is a schematic diagram of the structure in Embodiment 1 of this utility model where the first and second mating parts are snapped together.

[0022] Figure 4 This is a schematic diagram of the docking relationship between the first docking component and the second docking component in Embodiment 1 of this utility model;

[0023] Figure 5 This is a three-dimensional structural diagram of Embodiment 2 of this utility model;

[0024] Figure 6 This is a utility model Figure 5 A magnified view of a portion of point A in the middle;

[0025] Figure 7This is a schematic diagram of the docking relationship between the first docking member and the second docking member in Embodiment 2 of this utility model;

[0026] Figure 8 This is a schematic diagram of the connecting plate structure of this utility model.

[0027] Explanation of reference numerals in the attached figures:

[0028] 1. Base; 2. Motor; 3. First gear; 4. Lead screw; 5. Second gear; 6. Moving plate; 7. Guide rod; 8. Pulley; 9. Mounting seat; 10. Waste heat recovery unit; 11. Connecting pipe; 12. First fixing plate; 13. Limiting seat; 14. Exhaust pipe; 15. Second fixing plate; 16. Limiting plate; 17. Rotating plate; 18. First clamping plate; 19. Third fixing plate; 20. Connecting plate; 21. Slot plate; 22. Second clamping plate; 23. Groove; 24. Limiting groove; 25. Fourth fixing plate; 26. Protrusion. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Those skilled in the art should understand that the embodiments described below are only some, not all, of the embodiments disclosed. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0030] Example 1: As Figures 1-4 As shown, the technical solution adopted by this utility model is as follows: a waste heat recovery device for an energy-saving gas boiler, including a base 1, a connecting pipe 11 and a flue pipe 14. The base 1 has a cavity inside and the bottom of the base 1 is open. The base 1 is provided with a moving component, which facilitates the movement of the base 1.

[0031] The movable component includes a movable plate 6, which is slidably positioned vertically within a cavity and also has a lead screw 4 rotatably mounted vertically. The movable plate 6 and the lead screw 4 are threadedly connected. Several pulleys 8 are rotatably mounted on the bottom of the movable plate 6. The top of the lead screw 4 is rotatably connected to the inner top wall of the base 1, and a second gear 5 is fixedly fitted onto the outer surface of the lead screw 4. A motor 2 is fixedly mounted on the inner top wall of the base 1. A first gear 3 is coaxially fixedly mounted on the output shaft of the motor 2. The first gear 3 meshes with the second gear 5 and maintains a meshed state at all times.

[0032] In addition, several guide rods 7 are fixedly installed vertically inside the base 1, and each guide rod 7 is in a limiting sliding fit with the movable plate 6. The top of each guide rod 7 is fixedly connected to the top inner wall of the base 1, and the bottom of each guide rod 7 is provided with a disc, which is used to prevent the movable plate 6 from detaching from the guide rod 7.

[0033] When motor 2 is started, the output shaft of motor 2 drives the first gear 3 to rotate. The first gear 3 drives the lead screw 4 to rotate through the second gear 5, thereby causing the moving plate 6 to slide downward along the central axis of the lead screw 4, so that the pulley 8 contacts the ground and lifts the base 1 for easy movement.

[0034] A mounting base 9 is fixedly installed on the top of the base 1, and a waste heat recovery unit 10 is fixedly mounted on the top of the mounting base 9. A connecting pipe 11 is fixedly connected to one side of the waste heat recovery unit 10. A first connecting piece is provided on one side of the connecting pipe 11, and a second connecting piece is provided on one side of the exhaust pipe 14. The first connecting piece and the second connecting piece are connected head-to-head by a snap-fit ​​device, thereby achieving a tight fit between the connecting pipe 11 and the exhaust pipe 14, and thus realizing the connection between the waste heat recovery unit 10 and the exhaust pipe 14.

[0035] The first connecting component includes a first fixing plate 12, which is fixedly sleeved on the outer surface of the connecting pipe 11. Two limiting seats 13 are fixedly provided on one side of the first fixing plate 12, and each limiting seat 13 has a limiting groove 24. The limiting groove 24 is composed of an arc-shaped groove and a rectangular groove connected together, and several positioning holes are provided in the arc-shaped groove.

[0036] The second connecting piece includes a second fixing plate 15, which is fixedly sleeved on the outer surface of the exhaust pipe 14, and the second fixing plate 15 is arranged facing the first fixing plate 12.

[0037] The snap-fit ​​component includes limiting plates 16. Two limiting plates 16 are rotatably mounted on the second fixed plate 15 via a rotating shaft. Each limiting plate 16 consists of a flat end and an arc end on all four sides. Each limiting plate 16 corresponds one-to-one with a limiting groove 24. The flat end of each limiting plate 16 slides into the rectangular groove of the corresponding limiting groove 24, and the arc end of each limiting plate 16 adapts to and slides into the arc-shaped groove of the corresponding limiting groove 24. Simultaneously, each limiting plate 16 is fixedly connected to a rotating plate 17 via a connecting post. The second fixed plate 15 has several clearance grooves, each corresponding to a connecting post.

[0038] In addition, a number of positioning beads are fixedly installed on the outer surface of the limiting plate 16. The number of positioning beads is equal to the number of positioning holes and they correspond one-to-one. Each positioning bead slides and engages with the corresponding positioning hole.

[0039] like Figure 4As shown, the connecting pipe 11 and the exhaust pipe 14 are aligned and fitted together, allowing the limiting plate 16 to slide into the arc-shaped groove of the limiting groove 24 through the rectangular groove. Then, the rotating plate 17 is rotated, causing the limiting plate 16 to rotate 90 degrees via the connecting column, thus positioning the positioning ball within the positioning hole, completing the fitting and limiting operation between the connecting pipe 11 and the exhaust pipe 14. When disassembly is required, simply rotate the rotating plate 17 in the opposite direction, causing the limiting plate 16 to rotate 90 degrees in the opposite direction, thereby releasing the engagement between the positioning ball and the positioning hole, and then pull out the limiting plate 16.

[0040] Working principle of Example 1: When in use, start motor 2. The output shaft of motor 2 drives the first gear 3 to rotate. The first gear 3 drives the lead screw 4 to rotate through the second gear 5, thereby driving the moving plate 6 to slide downward along the central axis of the lead screw 4, so that the pulley 8 contacts the ground and lifts the base 1, making it easy to move the waste heat recovery unit 10.

[0041] The operator moves the waste heat recovery unit 10 near the boiler, ensuring that the connecting pipe 11 and the flue pipe 14 are aligned and fitted together. This allows the limiting plate 16 to slide into the arc-shaped groove of the limiting groove 24 through the rectangular groove. Then, the rotating plate 17 is rotated, causing the limiting plate 16 to rotate 90 degrees via the connecting column. This positions the positioning ball within the positioning hole, completing the fitting and limiting operation between the connecting pipe 11 and the flue pipe 14, thus achieving stable connection between the waste heat recovery unit 10 and the flue pipe 14.

[0042] When disassembly is required, simply rotate the rotating plate 17 in the opposite direction so that the limiting plate 16 rotates 90 degrees in the opposite direction, thereby releasing the engagement between the positioning ball and the positioning hole, and then pull out the limiting plate 16.

[0043] Example 2: Figures 5-8 As shown, the difference between Embodiment 2 and Embodiment 1 is that the first connecting member includes a fourth fixing plate 25, which is fixedly sleeved on the outer surface of the connecting pipe 11. Two first clamping plates 18 are fixedly disposed on the outer surface of the fourth fixing plate 25, symmetrically positioned at both ends of the fourth fixing plate 25. Figure 7 As shown, the first card plate 18 is provided with both a protrusion 26 and a positioning hole.

[0044] The second connecting piece includes a third fixing plate 19, which is fixedly sleeved on the outer surface of the exhaust pipe 14. Two second clamping plates 22 are fixedly installed on the outer surface of the third fixing plate 19. The two second clamping plates 22 are symmetrically distributed at both ends of the third fixing plate 19. The second clamping plates 22 are fixedly provided with protrusions 26 and positioning holes.

[0045] The first card plate 18 corresponds one-to-one with the second card plate 22, and each first card plate 18 is centrally symmetrical with the corresponding second card plate 22.

[0046] The snap-fit ​​component includes a slot plate 21. Two connecting plates 20 are fixedly mounted on the outer surface of the fourth fixing plate 25. The two connecting plates 20 are symmetrically arranged, and support columns are fixedly mounted on opposite sides of the two connecting plates 20. A slot plate 21 is rotatably mounted on opposite sides of the two support columns. Each slot plate 21 has two grooves 23. The two grooves 23 on the same slot plate 21 are centrally symmetrical. The number of grooves 23 and protrusions 26 are equal and correspond one-to-one. Each groove 23 is adapted to the corresponding protrusion 26, and the two are snap-fitted together.

[0047] In addition, each slot plate 21 is fixedly provided with positioning beads. The number of positioning beads is equal to the number of positioning holes and they correspond one-to-one. Each positioning bead is engaged with the corresponding positioning hole.

[0048] With the connecting pipe 11 and the exhaust pipe 14 aligned and fitted together, the third fixing plate 19 abuts against the connecting plate 20. Then, rotate the slot plate 21 so that the grooves 23 on the slot plate 21 engage with the corresponding protrusions 26. After the protrusions 26 and grooves 23 are engaged, the positioning ball also engages with the positioning hole, thus completing the fitting and limiting operation between the connecting pipe 11 and the exhaust pipe 14. When disassembly is required, simply rotate the slot plate 21 in the opposite direction to release the engagement between the positioning ball and the positioning hole, allowing the protrusions 26 to disengage from the grooves 23.

[0049] The working principle of Example 2: The operator moves the waste heat recovery unit 10 near the boiler, so that the connecting pipe 11 and the flue pipe 14 are directly aligned and in contact. At this time, the third fixing plate 19 abuts against the connecting plate 20. Then, the slot plate 21 is rotated so that the grooves 23 on the slot plate 21 engage with the corresponding protrusions 26. After the protrusions 26 and the grooves 23 are engaged, the positioning ball also engages with the positioning hole, thereby completing the fitting and limiting operation of the connecting pipe 11 and the flue pipe 14.

[0050] When disassembly is required, simply rotate the slot plate 21 in the opposite direction to release the engagement between the positioning ball and the positioning hole, so that the protrusion 26 disengages from the groove 23.

[0051] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A waste heat recovery device for an energy-saving gas boiler, characterized in that, The device includes a base (1), a connecting pipe (11), and a flue pipe (14). The base (1) has an internal cavity and an open bottom. The base (1) has a moving component that facilitates the movement of the base (1). A waste heat recovery unit (10) is fixedly mounted on the top of the base (1). The connecting pipe (11) is fixedly connected to one side of the waste heat recovery unit (10). A first connecting piece is provided on one side of the connecting pipe (11), and a second connecting piece is provided on one side of the flue pipe (14). The first connecting piece and the second connecting piece are connected to each other by a snap-fit ​​connector.

2. The waste heat recovery equipment for the energy-saving gas boiler according to claim 1, characterized in that, The moving component includes a moving plate (6), which is slidably positioned in the vertical direction and a lead screw (4) is rotatably positioned in the vertical direction within the cavity. The moving plate (6) and the lead screw (4) are threadedly connected. Several pulleys (8) are rotatably positioned at the bottom of the moving plate (6). The top of the lead screw (4) is rotatably connected to the inner wall of the top of the base (1). A second gear (5) is fixedly fitted on the outer surface of the lead screw (4). A motor (2) is fixedly installed on the inner wall of the top of the base (1). A first gear (3) is fixedly installed on the output shaft of the motor (2). The first gear (3) meshes with the second gear (5) for transmission. Several guide rods (7) are fixedly positioned in the vertical direction within the base (1). Each guide rod (7) is slidably positioned with the moving plate (6), and the top of each guide rod (7) is fixedly connected to the inner wall of the top of the base (1).

3. The waste heat recovery equipment for the energy-saving gas boiler according to claim 1, characterized in that, The first docking component includes a first fixing plate (12), which is fixedly sleeved on the outer surface of the connecting pipe (11). Two limiting seats (13) are fixedly provided on one side of the first fixing plate (12). Each limiting seat (13) has a limiting groove (24) and several positioning holes are provided in the limiting groove (24).

4. The waste heat recovery equipment for the energy-saving gas boiler according to claim 3, characterized in that, The second docking component includes a second fixing plate (15), which is fixedly sleeved on the outer surface of the exhaust pipe (14), and the second fixing plate (15) is arranged facing the first fixing plate (12).

5. The waste heat recovery equipment for the energy-saving gas boiler according to claim 4, characterized in that, The snap-fit ​​component includes a limiting plate (16). Two limiting plates (16) are rotatably mounted on the second fixing plate (15). The limiting plates (16) correspond one-to-one with the limiting grooves (24). Each limiting plate (16) is engaged with the corresponding limiting groove (24) in a transmission snap-fit ​​manner. Each limiting plate (16) is fixedly connected to the rotating plate (17) through a connecting post. The second fixing plate (15) has a clearance groove, which corresponds one-to-one with the connecting post. Positioning beads are fixedly installed on the outer surface of the limiting plate (16). The number of positioning beads is equal to the number of positioning holes and they are set one-to-one.

6. The waste heat recovery equipment for the energy-saving gas boiler according to claim 1, characterized in that, The first docking component includes a fourth fixing plate (25), which is fixedly sleeved on the outer surface of the connecting pipe (11). Two first clamping plates (18) are fixedly arranged on the outer surface of the fourth fixing plate (25). Each first clamping plate (18) is fixedly provided with a protrusion (26) and has several positioning holes.

7. The waste heat recovery equipment for the energy-saving gas boiler according to claim 6, characterized in that, The second docking component includes a third fixing plate (19), which is fixedly sleeved on the outer surface of the exhaust pipe (14). Two second clamping plates (22) are fixedly installed on the outer surface of the third fixing plate (19). The second clamping plate (22) is fixedly provided with protrusions (26) and positioning holes. The first clamping plate (18) corresponds to the second clamping plate (22) one by one, and each first clamping plate (18) is symmetrical to the corresponding second clamping plate (22).

8. The waste heat recovery equipment for the energy-saving gas boiler according to claim 7, characterized in that, The snap-fit ​​component includes a slot plate (21). Two connecting plates (20) are fixedly installed on the outer surface of the fourth fixing plate (25). Support columns are fixedly installed on opposite sides of the two connecting plates (20). The slot plate (21) is rotatably installed on opposite sides of the two support columns. Two grooves (23) are opened on each slot plate (21). The two grooves (23) on the same slot plate (21) are symmetrical. The number of grooves (23) and protrusions (26) are equal and correspond one-to-one. Each groove (23) is adapted to the corresponding protrusion (26) and the two are snap-fitted together. Positioning beads are fixedly installed on each slot plate (21). The number of positioning beads and positioning holes are equal and correspond one-to-one and are snap-fitted together.

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