A multi-return tube heat exchanger

Abstract

The utility model relates to the technical field of heat exchangers, in particular to a multi-return tubular heat exchanger, comprising a shell, a tube sheet dividing the shell into a first chamber and a second chamber, a plurality of heat exchange tubes being connected to the tube sheet, the heat exchange tubes being located in the second chamber, and an anti-scaling mechanism for cleaning the inner wall of the heat exchange tube being connected to the first chamber; the anti-scaling mechanism comprises a spring, one end of the spring being fixedly connected to the tube sheet, the other end of the spring being fixedly connected to a mounting plate, a plurality of wiping assemblies being connected to the mounting plate at equal intervals along the length direction, and the wiping assemblies being matched with the heat exchange tubes. The utility model impacts the mounting plate through the introduced wastewater, and the mounting plate squeezes the spring, and the spring generates elastic force after being compressed, and the elastic force generated by the spring resets the mounting plate, and the mounting plate drives the wiping assembly to move through a fixed rod, and the wiping assembly cleans the inner wall of the heat exchange tube after moving, so as to prevent dirt from being fixed on the inner wall of the heat exchange tube, thereby maintaining the heat exchange effect of the heat exchange tube.

Description

Technical Field

[0001] The utility model relates to the technical field of heat exchangers, in particular to a multi-return tube heat exchanger. Background Art

[0002] At present, some enterprises and buildings have a large amount of low-temperature waste heat in their production and life. The natural discharge of these low-temperature waste heat causes a waste of resources. The low-temperature waste heat is treated by heat exchanger and the waste heat in the waste water is utilized. When the heat in the waste water is utilized by the heat exchanger, after the waste water is introduced into the heat exchanger, a lot of dirt will adhere to the inner wall of the heat exchange tube of the heat exchanger. After the dirt adheres to the inner wall of the heat exchange tube, the heat exchange effect of the heat exchange tube is reduced, so that the heat in the waste water cannot be fully utilized for heat exchange. Utility Model Content

[0003] The utility model aims to solve the problem in the prior art that dirt adheres to the inner wall of the heat exchange tube, reducing the heat exchange effect of the heat exchange tube, thereby failing to fully utilize the heat in the wastewater for heat exchange, and proposes a multi-return tubular heat exchanger.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] Design a multi-return tubular heat exchanger, including a shell, wherein:

[0006] A tube sheet is fixedly connected in the shell, the tube sheet divides the shell into a first chamber and a second chamber, a plurality of heat exchange tubes are connected to the tube sheet, the heat exchange tubes are located in the second chamber, and an anti-scaling mechanism for cleaning the inner wall of the heat exchange tube is connected to the first chamber;

[0007] The anti-scaling mechanism includes a spring, one end of which is fixedly connected to the tube sheet, and the other end of the spring is fixedly connected to a mounting plate, a plurality of fixing rods are connected to the mounting plate at equal intervals along the length direction, and a plurality of wiping assemblies are connected to each of the fixing rods at equal intervals along the length direction, and the wiping assemblies cooperate with the heat exchange tubes.

[0008] Preferably, a support base is fixedly connected to the bottom end of the shell.

[0009] Preferably, an anti-wear pad is fixedly connected to the bottom end of the support seat.

[0010] Preferably, the wiping assembly comprises a perforated plate, the perforated plate is fixedly connected to the fixing rod, a fixing ring is fixedly connected to the perforated plate, a cleaning pad is connected to the fixing ring, and the cleaning pad is in contact with the inner wall of the heat exchange tube.

[0011] Preferably, the perforated plate and the fixing ring are an integral structure.

[0012] Preferably, the cleaning pad is a sponge pad.

[0013] Preferably, an elastic band is fixedly connected to the mounting plate, and one end of the elastic band is fixedly connected to the first cavity.

[0014] The utility model proposes a multi-return tubular heat exchanger, which has the following beneficial effects:

[0015] The imported wastewater impacts the mounting plate, which squeezes the spring. The spring generates elastic force after being compressed. The elastic force generated by the spring resets the mounting plate. The mounting plate drives the wiping assembly to move through the fixed rod. After the wiping assembly moves, it cleans the inner wall of the heat exchange tube to prevent dirt from being fixed on the inner wall of the heat exchange tube, thereby maintaining the heat exchange effect of the heat exchange tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a structural schematic diagram of a multi-return tubular heat exchanger proposed by the utility model;

[0017] Figure 2 This is a cross-sectional structural schematic diagram of a multi-return tubular heat exchanger proposed by the utility model;

[0018] Figure 3 This is a schematic structural diagram of an anti-scaling mechanism in a multi-pass tubular heat exchanger proposed by the utility model;

[0019] Figure 4 The utility model is a schematic diagram of the structure of a wiping component in a multi-return tubular heat exchanger.

[0020] In the figure: shell 1, support seat 2, tube sheet 3, partition 4, heat exchange tube 5, anti-scaling mechanism 6, spring 61, mounting plate 62, wiping assembly 63, fixing rod 64, elastic belt 65, perforated plate 631, fixing ring 632, cleaning pad 633. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0022] Example 1

[0023] Reference Figure 1-3 , a multi-pass tubular heat exchanger, comprising a shell 1, wherein:

[0024] The bottom end of the shell 1 is fixedly connected with a support seat 2, and the bottom end of the support seat 2 is fixedly connected with an anti-wear pad. A tube sheet 3 is fixedly connected inside the shell 1, and the tube sheet 3 divides the shell 1 into a first chamber and a second chamber. A partition 4 is fixedly connected in the first chamber, and the partition 4 divides the first chamber into a third chamber and a fourth chamber. A hot flow inlet is provided on the third chamber, and a hot flow outlet is provided on the fourth chamber. A cold flow inlet is provided at the upper end of the second chamber, and a cold flow outlet is provided at the bottom end of the second chamber. A plurality of heat exchange tubes 5 are connected to the tube sheet 3, and the two ends of the heat exchange tubes 5 are respectively connected to the third chamber and the fourth chamber. The heat exchange tubes 5 are located in the second chamber, and the first chamber is connected with a useful The anti-scaling mechanism 6 for cleaning the inner wall of the heat exchange tube 5, when utilizing the waste heat of the waste water, the waste water is introduced through the hot flow inlet, the waste water enters the third chamber, the waste water in the third chamber is introduced into the fourth chamber through the heat exchange tube 5, the waste water in the fourth chamber is released through the hot flow outlet, the cold water is introduced into the second chamber through the cold flow inlet, the cold water in the second chamber contacts the heat exchange tube 5, the cold water is released from the cold flow outlet after the temperature is increased, when the waste water is introduced into the third chamber, the introduced waste water impacts the anti-scaling mechanism 6, and the anti-scaling mechanism 6 moves to clean the inner wall of the heat exchange tube 5, so as to prevent the dirt from being fixed on the inner wall of the heat exchange tube 5, thereby maintaining the heat exchange effect of the heat exchange tube 5;

[0025] The anti-scaling mechanism 6 includes a spring 61, one end of the spring 61 is fixedly connected to the tube sheet 3, the other end of the spring 61 is fixedly connected to a mounting plate 62, a plurality of fixing rods 64 are connected to the mounting plate 62 at equal intervals along the length direction, each fixing rod 64 is connected to a plurality of wiping components 63 at equal intervals along the length direction, the wiping components 63 cooperate with the heat exchange tube 5, an elastic band 65 is fixedly connected to the mounting plate 62, one end of the elastic band 65 is fixedly connected to the first chamber, the wastewater in the third chamber impacts the mounting plate 62, the mounting plate 62 squeezes the spring 61, and the spring 6 After being pressed, elastic force is generated. The elastic force generated by the spring 61 resets the mounting plate 62. The mounting plate 62 drives the wiping assembly 63 to move through the fixing rod 64. After the wiping assembly 63 moves, the inner wall of the heat exchange tube 5 is cleaned to prevent dirt from being fixed on the inner wall of the heat exchange tube 5, thereby maintaining the heat exchange effect of the heat exchange tube 5. When the wastewater is introduced into the third chamber, it impacts the elastic belt 65. After the elastic belt 65 is pulled by the impact force, the mounting plate 62 moves in the horizontal direction, thereby increasing the moving distance of the wiping assembly 63 in the horizontal direction, thereby improving the wiping effect of the wiping assembly 63.

[0026] Working process: When the waste heat of waste water is utilized, the waste water is introduced through the hot flow inlet, the waste water enters the third chamber, the waste water in the third chamber is introduced into the fourth chamber through the heat exchange tube 5, the waste water in the fourth chamber is released through the hot flow outlet, the cold water is introduced into the second chamber through the cold flow inlet, the cold water in the second chamber contacts the heat exchange tube 5, the cold water is released from the cold flow outlet after the temperature rises, when the waste water is introduced into the third chamber, the introduced waste water impacts the mounting plate 62, the mounting plate 62 squeezes the spring 61, the spring 61 generates elastic force after being compressed, and the spring 6 The elastic force generated by the mounting plate 62 resets the mounting plate 62, and the mounting plate 62 drives the wiping assembly 63 to move through the fixing rod 64. After the wiping assembly 63 moves, it cleans the inner wall of the heat exchange tube 5 to prevent dirt from being fixed on the inner wall of the heat exchange tube 5, thereby maintaining the heat exchange effect of the heat exchange tube 5. When the wastewater is introduced into the third chamber, it impacts the elastic belt 65. After the elastic belt 65 is pulled by the impact force, the mounting plate 62 moves in the horizontal direction, thereby increasing the moving distance of the wiping assembly 63 in the horizontal direction, thereby improving the wiping effect of the wiping assembly 63.

[0027] Example 2

[0028] When the inner wall of the heat exchange tube 5 is cleaned by the wiping assembly 63, the wiping assembly 63 may easily cause scratches on the inner wall of the heat exchange tube 5 during the cleaning process, which may easily cause damage to the heat exchange tube 5. Figure 4 As another preferred embodiment of the utility model, the difference from embodiment 1 is that the wiping assembly 63 includes a perforated plate 631, the perforated plate 631 is fixedly connected to the fixing rod 64, a fixing ring 632 is fixedly connected to the perforated plate 631, the perforated plate 631 and the fixing ring 632 are an integral structure, a cleaning pad 633 is connected to the fixing ring 632, the cleaning pad 633 is in contact with the inner wall of the heat exchange tube 5, the cleaning pad 633 is a sponge pad, the fixing rod 64 drives the perforated plate 631 to move, the perforated plate 631 drives the fixing ring 632 to move, the fixing ring 632 drives the cleaning pad 633 to move, and the cleaning pad 633 cleans the inner wall of the heat exchange tube 5 after moving, thereby not causing damage to the heat exchange tube 5.

[0029] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A multi-pass tubular heat exchanger, characterized in that: It comprises a housing (1), wherein: A tube sheet (3) is fixedly connected inside the shell (1), the tube sheet (3) divides the shell (1) into a first chamber and a second chamber, a plurality of heat exchange tubes (5) are connected to the tube sheet (3), the heat exchange tubes (5) are located in the second chamber, and an anti-scaling mechanism (6) for cleaning the inner wall of the heat exchange tube (5) is connected to the first chamber; The anti-scaling mechanism (6) comprises a spring (61), one end of the spring (61) is fixedly connected to the tube sheet (3), the other end of the spring (61) is fixedly connected to a mounting plate (62), a plurality of fixing rods (64) are connected to the mounting plate (62) at equal intervals along the length direction, each of the fixing rods (64) is connected to a plurality of wiping assemblies (63) at equal intervals along the length direction, and the wiping assemblies (63) cooperate with the heat exchange tube (5).

2. The multi-pass tubular heat exchanger according to claim 1, characterized in that: The bottom end of the shell (1) is fixedly connected to a support base (2).

3. The multi-pass tubular heat exchanger according to claim 2, characterized in that: An anti-wear pad is fixedly connected to the bottom end of the support seat (2).

4. The multi-pass tubular heat exchanger according to claim 1, characterized in that: The wiping assembly (63) comprises a perforated plate (631), wherein the perforated plate (631) is fixedly connected to the fixing rod (64), a fixing ring (632) is fixedly connected to the perforated plate (631), a cleaning pad (633) is connected to the fixing ring (632), and the cleaning pad (633) is in contact with the inner wall of the heat exchange tube (5).

5. The multi-pass tubular heat exchanger according to claim 4, characterized in that: The perforated plate (631) and the fixing ring (632) are an integral structure.

6. The multi-pass tubular heat exchanger according to claim 4, characterized in that: The cleaning pad (633) is a sponge pad.

7. The multi-pass tubular heat exchanger according to claim 1, characterized in that: An elastic band (65) is fixedly connected to the mounting plate (62), and one end of the elastic band (65) is fixedly connected to the first chamber.

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