Boiler heat exchanger

Abstract

The utility model discloses a boiler heat exchanger, which belongs to the technical field of boiler heat exchangers and comprises a heat exchange box, a water outlet pipe is fixed at a water outlet of the heat exchange box, an electric valve is arranged on the water outlet pipe, positioning holes are arranged on the periphery of an opening at the top end of the heat exchange box, and positioning columns are movably inserted into the four positioning holes. The top ends of the four positioning columns are fixedly connected with the same cover plate; according to the utility model, through the arrangement of the clamping type structure convenient to disassemble and assemble, when the spiral heat exchange tube needs to be replaced, the rotary table connected with the rotary shaft can be rotated through the handle, and the two guide columns move oppositely under the action of the chute, so that the two U-shaped positioning rods are pulled to move oppositely, and the spiral heat exchange tube can be replaced. The two U-shaped positioning rods are arranged in the clamping grooves, so that the two opposite ends of the two U-shaped positioning rods are separated from the clamping grooves correspondingly, the cover plate can be opened upwards, the two sealing blocks can be taken out of the alignment grooves correspondingly, and at the moment, the spiral heat exchange pipe connected between the heat inlet pipe and the heat outlet pipe can be taken out and replaced.

Description

Technical Field

[0001] The utility model belongs to the technical field of boiler heat exchangers, and in particular relates to a boiler heat exchanger. Background Art

[0002] The boiler heat exchanger is an important component in the boiler system, which is used to transfer the heat energy generated by the combustion of fuel to the working medium (usually water or steam). This can heat up the working medium and generate steam, thus realizing the heating function of the boiler.

[0003] At present, the boiler heat exchanger of the prior art has the following disadvantages during use:

[0004] Generally, heat exchange tubes are arranged inside the boiler heat exchanger. The exhaust gas from the boiler enters the heat exchange tubes to transfer the heat energy of the exhaust gas to the water in the heat exchanger for heating. However, the heat exchange tubes are prone to aging after a long time and need to be replaced regularly. However, the heat exchange tubes in the boiler heat exchanger of the prior art cannot be disassembled, which makes it more troublesome to replace them later. For this reason, we propose a boiler heat exchanger. Utility Model Content

[0005] The purpose of the utility model is to provide a boiler heat exchanger to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a boiler heat exchanger comprises a heat exchange box, a water outlet pipe is fixed at the water outlet of the heat exchange box, an electric valve is arranged on the water outlet pipe, positioning holes are arranged around the top opening of the heat exchange box, positioning columns are movably inserted in the four positioning holes, the top ends of the four positioning columns are fixedly connected to the same cover plate, the bottom end of the cover plate is fixedly connected to two symmetrically arranged sealing blocks, the top end of the heat exchange box is provided with a positioning groove matched with the sealing block, the inner bottom wall of the positioning groove is an arc-shaped structure, a heat inlet pipe and a heat outlet pipe are movably overlapped in the two positioning grooves, the heat inlet pipe and the heat outlet pipe are connected with a spiral heat exchange pipe, the bottom ends of the two sealing blocks are respectively provided with a concave arc groove matched with the heat inlet pipe and the heat outlet pipe, and a clamping structure for easy disassembly and assembly is connected between the cover plate and the heat exchange box;

[0007] The clamping type easy disassembly and assembly structure can facilitate the disassembly of the cover plate and the two sealing blocks at the bottom, so that the spiral heat exchange tube and the heat inlet pipe and heat outlet pipe respectively connected at both ends can be taken out from the heat exchange box for replacement.

[0008] As a preferred implementation manner, the depth of the alignment groove is greater than the length of the sealing block, and the width of the sealing block is equal to the width of the alignment groove.

[0009] As a preferred embodiment, the clamping type easy-to-disassemble structure includes a rotating shaft rotatably connected at the center of the top end of the cover plate, a handle is fixedly connected to the top end of the rotating shaft, and a rotating disk is fixedly connected to the bottom end of the rotating shaft.

[0010] As a preferred embodiment, the turntable is provided with two inclined grooves arranged in a circular array, and the inclined grooves are movably mounted on the outer sides of the guide pillars. The top ends of the two guide pillars are fixedly connected with U-shaped positioning rods, and the two ends of the two U-shaped positioning rods are respectively clamped in the grooves provided on the inner wall of the heat exchange box.

[0011] As a preferred embodiment, the two U-shaped positioning rods are movably sleeved on the outer side of the L-shaped guide rod, and the top ends of the two L-shaped guide rods are fixedly connected to the bottom end of the cover plate.

[0012] As a preferred embodiment, the ends of the two L-shaped guide rods that are away from each other are fixedly connected with a fixing block, and the opposite sides of the two fixing blocks are fixedly connected to the U-shaped positioning rod through two symmetrically arranged springs.

[0013] Compared with the prior art, the boiler heat exchanger provided by the utility model has at least the following beneficial effects:

[0014] (1) By setting up a clamping type easy-to-disassemble structure, when the spiral heat exchange tube needs to be replaced, the turntable connected to the shaft can be rotated by the handle, and the two guide pillars can be pulled toward each other with the help of the inclined groove, thereby pulling the two U-shaped positioning rods toward each other, so that the two ends of the two U-shaped positioning rods are separated from the clamping groove respectively, so that the cover plate can be opened upwards, and the two sealing blocks can be taken out of the alignment groove respectively. At this time, the spiral heat exchange tube connected between the heat inlet pipe and the heat outlet pipe can be taken out and replaced. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall three-dimensional first-view structure of the utility model;

[0016] Figure 2 It is a schematic diagram of the overall three-dimensional second viewing angle structure of the utility model;

[0017] Figure 3 It is a three-dimensional structural schematic diagram of each component in the heat exchange box of the utility model;

[0018] Figure 4 It is a schematic diagram of the three-dimensional structure of the spiral heat exchange tube of the utility model after being taken out from the heat exchange box;

[0019] Figure 5 It is a three-dimensional structural schematic diagram of various components in the cover plate bottom clamping type easy-to-disassemble structure of the utility model.

[0020] In the figure: 1. heat exchange box; 11. water outlet pipe; 2. cover plate; 21. sealing block; 22. positioning column; 23. alignment groove; 24. positioning hole; 3. heat inlet pipe; 31. heat outlet pipe; 32. spiral heat exchange tube; 4. clamping type easy disassembly and assembly structure; 41. rotating shaft; 42. handle; 43. turntable; 44. inclined groove; 45. guide column; 46. U-shaped positioning rod; 47. L-shaped guide rod; 48. fixing block; 49. spring. DETAILED DESCRIPTION

[0021] The present invention will be further described below in conjunction with the embodiments.

[0022] In order to make the purpose, technical solution and advantages of the embodiments of the present disclosure clearer, the technical solution of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, rather than all the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present disclosure.

[0023] Unless otherwise defined, the technical or scientific terms used in the present disclosure shall have the usual meanings understood by persons with ordinary skills in the field to which the present disclosure belongs. The words "including" or "comprising" and the like used in the present disclosure mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. The words "connect" or "connected" and the like are not limited to physical or mechanical connections, but may also include electrical connections, whether direct or indirect. "Up", "down", "left", "right", etc. are only used to indicate relative position relationships. When the absolute position of the object being described changes, the relative position relationship may also change accordingly. Example

[0024] Generally, heat exchange tubes are arranged inside the boiler heat exchanger. The exhaust gas from the boiler enters the heat exchange tubes to transfer the heat energy of the exhaust gas to the water in the heat exchanger for heating. However, the heat exchange tubes are prone to aging after a long time and need to be replaced regularly. However, the heat exchange tubes in the boiler heat exchanger of the prior art cannot be disassembled, which makes it more troublesome to replace them later.

[0025] To do this, see Figure 1-5The utility model provides a boiler heat exchanger, comprising: a heat exchange box 1, a water outlet pipe 11 is fixed at the water outlet of the heat exchange box 1, and an electric valve is arranged on the water outlet pipe 11, positioning holes 24 are arranged around the top opening of the heat exchange box 1, and positioning columns 22 are movably inserted in the four positioning holes 24, and the tops of the four positioning columns 22 are fixedly connected to the same cover plate 2, and the bottom end of the cover plate 2 is fixedly connected to two symmetrically arranged sealing blocks 21, and the top of the heat exchange box 1 is provided with a positioning groove 23 matched with the sealing block 21, and the inner bottom wall of the positioning groove 23 is an arc-shaped structure, and a heat inlet pipe 3 and a heat outlet pipe 31 are movably overlapped in the two positioning grooves 23, and the heat inlet pipe 3 and the heat outlet pipe 31 are connected with a spiral heat exchange pipe 32, and the bottom ends of the two sealing blocks 21 are respectively provided with concave arc grooves matched with the heat inlet pipe 3 and the heat outlet pipe 31, and a clamping type easy-to-disassemble structure 4 is connected between the cover plate 2 and the heat exchange box 1;

[0026] The clamping and disassembly structure 4 can facilitate the disassembly of the cover plate 2 and the two sealing blocks 21 at the bottom, so that the spiral heat exchange tube 32 and the heat inlet tube 3 and the heat outlet tube 31 connected at both ends can be taken out from the heat exchange box 1 for replacement.

[0027] Further Figure 3-4 As shown, it is worth to explain in detail that the depth of the alignment groove 23 is greater than the length of the sealing block 21 , and the width of the sealing block 21 is equal to the width of the alignment groove 23 .

[0028] Further Figure 2 and 4 As shown in Figure 5, it is worth specifically explaining that in order to facilitate the fixation between the cover plate 2 and the heat exchange box 1, a clamping type disassembly structure 4 is provided, which includes a rotating shaft 41 rotatably connected at the center of the top end of the cover plate 2, a handle 42 is fixedly connected to the top end of the rotating shaft 41, and a turntable 43 is fixedly connected to the bottom end of the rotating shaft 41. The turntable 43 is provided with two inclined grooves 44 arranged in a circular array, and the inclined grooves 44 are movably sleeved on the outside of the guide pillars 45. The tops of the two guide pillars 45 are fixedly connected with U-shaped positioning rods 46, and the two opposite ends of the two U-shaped positioning rods 46 are respectively clamped in the clamping grooves provided on the inner wall of the heat exchange box 1.

[0029] Among them, the card slot is attached Figure 3 Visible in.

[0030] Further Figure 2 and 4As shown in Figure 5, it is worth explaining in detail that in order to enable the two ends of the two U-shaped positioning rods 46 to be respectively engaged in the slots, the two U-shaped positioning rods 46 are movably sleeved on the outside of the L-shaped guide rod 47, the top ends of the two L-shaped guide rods 47 are fixed to the bottom end of the cover plate 2, and the ends of the two L-shaped guide rods 47 that are away from each other are fixed with fixed blocks 48, and the opposite sides of the two fixed blocks 48 are fixed to the U-shaped positioning rod 46 through two symmetrically arranged springs 49.

[0031] When the two U-shaped positioning rods 46 move toward each other, the spring 49 is stretched.

[0032] In summary: when using the boiler heat exchanger, when the spiral heat exchange tube 32 needs to be replaced, the turntable 43 connected to the rotating shaft 41 can be rotated by the handle 42, and the two guide pillars 45 can be moved relative to each other with the action of the inclined groove 44, thereby pulling the two U-shaped positioning rods 46 to move relative to each other, so that the two opposite ends of the two U-shaped positioning rods 46 are respectively separated from the card groove, so that the cover plate 2 can be opened upward, and the two sealing blocks 21 can be taken out from the alignment groove 23 respectively. At this time, the spiral heat exchange tube 32 connected between the heat inlet pipe 3 and the heat outlet pipe 31 can be taken out and replaced, which solves the problem that the heat exchange tube in the prior art is not convenient to replace from the heat exchanger.

Claims

1. A boiler heat exchanger, comprising a heat exchange box (1), a water outlet of the heat exchange box (1) being fixed with a water outlet pipe (11), and an electric valve being arranged on the water outlet pipe (11), characterized in that: The heat exchange box (1) is provided with positioning holes (24) on all sides of the top opening, and positioning columns (22) are movably inserted in the four positioning holes (24). The top ends of the four positioning columns (22) are fixedly connected to the same cover plate (2), and the bottom end of the cover plate (2) is fixedly connected to two symmetrically arranged sealing blocks (21). The top end of the heat exchange box (1) is provided with a positioning groove (23) that matches the sealing block (21), and the inner bottom wall of the positioning groove (23) is an arc-shaped structure. The two positioning grooves (23) are respectively movably overlapped with a heat inlet pipe (3) and a heat outlet pipe (31), and the heat inlet pipe (3) and the heat outlet pipe (31) are connected with a spiral heat exchange pipe (32). The bottom ends of the two sealing blocks (21) are respectively provided with a concave arc groove that matches the heat inlet pipe (3) and the heat outlet pipe (31), and a clamping-type easy-to-disassemble structure (4) is connected between the cover plate (2) and the heat exchange box (1); The clamping type easy-to-disassemble structure (4) can facilitate the disassembly of the cover plate (2) and the two sealing blocks (21) at the bottom, so that the spiral heat exchange tube (32) and the heat inlet tube (3) and the heat outlet tube (31) respectively connected at both ends can be taken out of the heat exchange box (1) for replacement.

2. A boiler heat exchanger according to claim 1, characterized in that: The depth of the alignment groove (23) is greater than the length of the sealing block (21), and the width of the sealing block (21) is equal to the width of the alignment groove (23).

3. A boiler heat exchanger according to claim 1, characterized in that: The clamping type easy-to-disassemble structure (4) comprises a rotating shaft (41) rotatably connected at the center of the top end of the cover plate (2), a handle (42) being fixedly connected to the top end of the rotating shaft (41), and a rotating disk (43) being fixedly connected to the bottom end of the rotating shaft (41).

4. A boiler heat exchanger according to claim 3, characterized in that: The rotating disk (43) is provided with two inclined grooves (44) arranged in a circular array. The inclined grooves (44) are movably sleeved on the outside of the guide pillars (45). The top ends of the two guide pillars (45) are fixedly connected to U-shaped positioning rods (46). The two opposite ends of the two U-shaped positioning rods (46) are respectively clamped in the clamping grooves provided on the inner wall of the heat exchange box (1).

5. A boiler heat exchanger according to claim 4, characterized in that: The two U-shaped positioning rods (46) are movably sleeved on the outside of the L-shaped guide rod (47), and the top ends of the two L-shaped guide rods (47) are fixedly connected to the bottom end of the cover plate (2).

6. A boiler heat exchanger according to claim 5, characterized in that: The ends of the two L-shaped guide rods (47) that are separated from each other are fixedly connected to a fixing block (48), and the opposite sides of the two fixing blocks (48) are fixedly connected to the U-shaped positioning rod (46) via two symmetrically arranged springs (49).

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