Boiler preheating conversion device

Abstract

The utility model discloses a boiler preheating conversion device, which relates to the technical field of boilers, and comprises a heat exchange box and a preheating box, the top of the heat exchange box is fixedly provided with a smoke inlet channel, and one side of the preheating box is fixedly provided with a water inlet pipe and a water outlet pipe which are matched with the heat exchange box in a penetrating manner; two bent preheating pipes are symmetrically arranged in the preheating box, the ends, located in the preheating box, of the water inlet pipe and the water outlet pipe are fixedly connected with three-way pipes, the two ends of each preheating pipe are matched with ports of the corresponding three-way pipes, and a driving mechanism is arranged in the preheating box. And the two preheating pipes are in transmission connection with a driving mechanism. By arranging the two bent preheating pipes, spiral winding can be avoided while the preheating function is ensured, so that the preheating pipes can be quickly detached to be cleaned or replaced when incrustation is attached to the interiors of the preheating pipes, and then normal use of the whole device is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of boilers, in particular to a boiler preheating conversion device. Background Art

[0002] A boiler is an energy conversion device. Some existing boiler water preheating devices mostly use the waste heat of flue gas for heat exchange recovery. The waste heat of flue gas can only come into contact with boiler water through the outside of the flue gas pipe. The heat conversion efficiency is low and the preheating effect is poor.

[0003] After searching, the publication (announcement) number is: CN214038363U, which is a water preheating device for a fuel oil and gas steam boiler, including a heat exchange box, a heat exchange device is installed in the heat exchange box, a smoke inlet duct is installed at the smoke inlet end of the heat exchange device, a preheating box is installed on the heat exchange box, a preheating device is installed on the preheating box, a boiler water channel is installed between the preheating device and the preheating box, an ash collecting box is installed on the bottom of the heat exchange box, a smoke outlet pipe is installed at the smoke outlet end of the ash collecting box, and a ash cleaning device is installed on the ash collecting box.

[0004] The above technical solution has the following shortcomings:

[0005] The preheating tube in the above technical solution is spirally wound outside the boiler water channel. This causes a problem that when scale is deposited inside the preheating tube after long-term use, it is inconvenient to disassemble, clean or replace it, thereby affecting the normal use of the entire device. Utility Model Content

[0006] In view of the above problems existing in the existing preheating device, the present utility model is proposed.

[0007] Therefore, the purpose of the utility model is to provide a boiler preheating conversion device, which solves the problem that when scale is attached to the inside of the preheating tube after long-term use, it is inconvenient to disassemble, clean or replace it, thereby affecting the normal use of the entire device.

[0008] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0009] A boiler preheating conversion device comprises a heat exchange box and a preheating box, wherein a flue gas inlet is fixedly arranged on the top of the heat exchange box, a water inlet pipe and a water outlet pipe matching the heat exchange box are fixedly penetrated on one side of the preheating box, two preheating pipes arranged in a curved manner are symmetrically arranged inside the preheating box, one end of the water inlet pipe and the water outlet pipe located inside the preheating box are fixedly connected with a tee pipe, both ends of each preheating pipe are matched with the ports of the corresponding tee pipe, a driving mechanism is arranged inside the preheating box, and the two preheating pipes are both drivingly connected to the driving mechanism.

[0010] Preferably, the driving mechanism comprises a driving plate and two groups of fixed plates, the two groups of fixed plates are symmetrically fixed on one side of the driving plate, each group of fixed plates is provided with a plurality of fixed plates, the side wall of each fixed plate is provided with a plurality of slots, each preheating tube is movably connected to the corresponding slot, an internal threaded hole is provided inside the driving plate, a screw rod is passed through the internal thread of the internal threaded hole, and one end of the screw rod is rotatably connected to the inner wall of the preheating box.

[0011] Preferably, the other two ports of each of the three-way pipes are fixedly penetrated by an L-shaped pipe, the other end of each of the L-shaped pipes is movably plugged into the end pipe opening of the corresponding preheating pipe, the tube walls at both ends of each of the preheating pipes are fixedly sleeved with an annular plate, the side walls of each of the annular plates are fixedly provided with a sealing rubber ring, and each of the sealing rubber rings is in contact and connected with the end of the corresponding L-shaped pipe.

[0012] Preferably, U-shaped rods are movably provided at both ends of the driving plate, and the two U-shaped rods are symmetrically fixed inside the preheating box.

[0013] Preferably, the front and rear side walls of the preheating box are both provided with openings, and sealing door panels are hingedly provided inside the two openings.

[0014] Preferably, one end of the screw rod passes through the outside of the preheating box and is fixedly connected to a crank.

[0015] In the above technical solution, the technical effects and advantages provided by the utility model are:

[0016] The utility model can avoid spiral winding while ensuring the preheating function by setting two curved preheating tubes, so that when scale is attached to the inside of the preheating tube, it can be quickly disassembled, cleaned or replaced, thereby ensuring the normal use of the entire device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0018] Figure 1 It is a structural schematic diagram of the utility model;

[0019] Figure 2 This is a schematic diagram of the cross-sectional connection structure of the preheating box and its internal components of the utility model;

[0020] Figure 3 For the utility model Figure 2 An enlarged schematic diagram of part A.

[0021] Description of reference numerals:

[0022] 1. Heat exchange box; 2. Preheating box; 3. Flue inlet; 4. Water inlet pipe; 5. Water outlet pipe; 6. Preheating pipe; 7. Tee pipe; 8. Drive plate; 9. Fixed plate; 10. Screw rod; 11. L-shaped pipe; 12. Ring plate; 13. Sealing rubber ring; 14. U-shaped rod; 15. Sealing door panel; 16. Crank handle. DETAILED DESCRIPTION

[0023] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0024] The utility model embodiment discloses a boiler preheating conversion device.

[0025] The utility model provides Figure 1-3 A boiler preheating conversion device shown includes a heat exchange box 1 and a preheating box 2. A flue gas inlet 3 is fixedly arranged on the top of the heat exchange box 1. A water inlet pipe 4 and a water outlet pipe 5 matching the heat exchange box 1 are fixedly penetrated on one side of the preheating box 2. Two curved preheating tubes 6 are symmetrically arranged inside the preheating box 2. One end of the water inlet pipe 4 and the water outlet pipe 5 located inside the preheating box 2 is fixedly connected with a three-way pipe 7. Both ends of each preheating tube 6 match the ports of the corresponding three-way pipe 7. A driving mechanism is arranged inside the preheating box 2. Both preheating tubes 6 are drivingly connected to the driving mechanism. By utilizing the two curved preheating tubes 6, it is possible to avoid spiral winding while ensuring the preheating function, so that when scale is attached to the inside of the preheating tube 6, it can be quickly disassembled, cleaned or replaced, thereby ensuring the normal use of the entire device.

[0026] like Figure 2 As shown, the driving mechanism includes a driving plate 8 and two groups of fixed plates 9, the two groups of fixed plates 9 are symmetrically fixed on one side of the driving plate 8, each group of fixed plates 9 is provided with a plurality of, each fixed plate 9 has a side wall provided with a plurality of slots, each preheating tube 6 is movably plugged into the corresponding slot, an internal threaded hole is provided inside the driving plate 8, a screw rod 10 is passed through the internal thread of the internal threaded hole, one end of the screw rod 10 is rotatably connected to the inner wall of the preheating box 2, and the screw rod 10 is threadedly connected with the internal threaded hole provided inside the driving plate 8, so that the two groups of fixed plates 9 can be driven to move through the driving plate 8 during the rotation of the screw rod 10, thereby driving the two preheating tubes 6 to move, so that the two preheating tubes 6 can be connected to the water inlet pipe 4 and the water outlet pipe 5.

[0027] like Figure 3As shown, the other two ports of each three-way pipe 7 are fixedly penetrated by an L-shaped tube 11, and the other end of each L-shaped tube 11 is movably plugged with the end pipe mouth of the corresponding preheating tube 6, and the tube walls at both ends of each preheating tube 6 are fixedly sleeved with an annular plate 12, and the side wall of each annular plate 12 is fixedly provided with a sealing rubber ring 13, and each sealing rubber ring 13 is in contact and connected with the end of the corresponding L-shaped tube 11. By plugging the set L-shaped tube 11 with the end of the corresponding preheating tube 6, the end of the water inlet pipe 4 or the water outlet pipe 5 can be connected with the end of the corresponding preheating tube 6, and the set sealing rubber ring 13 can effectively ensure the sealing effect of the connection.

[0028] like Figure 2 As shown, U-shaped rods 14 are movably provided at both ends of the driving plate 8, and the two U-shaped rods 14 are symmetrically fixedly arranged inside the preheating box 2. By utilizing the movable sleeve connection between the two U-shaped rods 14 and the driving plate 8, the driving plate 8 can be limited to prevent the driving plate 8 from rotating with the screw 10.

[0029] like Figure 1-2 As shown, the front and rear side walls of the preheating box 2 are both provided with openings, and sealing door panels 15 are hingedly provided inside the two openings. The two sealing door panels 15 can be used to seal the corresponding openings respectively to avoid water leakage, and at the same time, the preheating box 2 can be opened to facilitate disassembly, cleaning or replacement of the two preheating tubes 6.

[0030] like Figure 1-2 As shown, one end of the screw rod 10 passes through the outside of the preheating box 2 and is fixedly connected to a crank 16. The crank 16 can be used to easily drive the screw rod 10 to rotate, thereby driving the driving mechanism.

[0031] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A boiler preheating conversion device, comprising a heat exchange box (1) and a preheating box (2), characterized in that: A flue gas inlet (3) is fixedly arranged on the top of the heat exchange box (1); a water inlet pipe (4) and a water outlet pipe (5) matching the heat exchange box (1) are fixedly penetrated on one side of the preheating box (2); two preheating pipes (6) arranged in a curved manner are symmetrically arranged inside the preheating box (2); one end of the water inlet pipe (4) and the water outlet pipe (5) located inside the preheating box (2) are fixedly connected to a three-way pipe (7); both ends of each preheating pipe (6) are matched with the ports of the corresponding three-way pipe (7); a driving mechanism is arranged inside the preheating box (2); and the two preheating pipes (6) are drivingly connected to the driving mechanism.

2. A boiler preheating conversion device according to claim 1, characterized in that: The driving mechanism comprises a driving plate (8) and two groups of fixed plates (9), the two groups of fixed plates (9) are symmetrically fixedly arranged on one side of the driving plate (8), each group of fixed plates (9) is provided with a plurality of fixed plates, the side wall of each fixed plate (9) is provided with a plurality of slots, each preheating tube (6) is movably plugged into a corresponding slot, an internal threaded hole is provided inside the driving plate (8), a screw rod (10) is passed through the internal thread of the internal threaded hole, and one end of the screw rod (10) is rotatably connected to the inner wall of the preheating box (2).

3. A boiler preheating conversion device according to claim 1, characterized in that: The other two ports of each three-way pipe (7) are fixedly penetrated with an L-shaped pipe (11), the other end of each L-shaped pipe (11) is movably plugged into the end pipe opening of the corresponding preheating pipe (6), the pipe walls at both ends of each preheating pipe (6) are fixedly sleeved with an annular plate (12), the side wall of each annular plate (12) is fixedly provided with a sealing rubber ring (13), and each sealing rubber ring (13) is in contact and connected with the end of the corresponding L-shaped pipe (11).

4. A boiler preheating conversion device according to claim 2, characterized in that: U-shaped rods (14) are movably provided at both ends of the driving plate (8), and the two U-shaped rods (14) are symmetrically fixedly arranged inside the preheating box (2).

5. A boiler preheating conversion device according to claim 1, characterized in that: The front and rear side walls of the preheating box (2) are both provided with openings, and sealing door panels (15) are hingedly provided inside the two openings.

6. A boiler preheating conversion device according to claim 2, characterized in that: One end of the screw rod (10) passes through the outside of the preheating box (2) and is fixedly connected to a crank (16).

Images