Plate preheater with good heat exchange effect

Abstract

The utility model discloses a plate preheater that heat exchange effect is good belongs to heat exchange technical field, including preheater main part, the inside of preheater main part is provided with the corrugated plate, and the inside of preheater main part forms flue gas channel and air channel through the corrugated plate, and the both ends of preheater main part are provided with flue gas pipeline connecting structure. Through the flue gas pipeline connecting structure that sets up, can utilize drive assembly to adjust the position of movable pipe, change the position of connecting plate relative to preheater main part, adjust the length of whole preheater, ensure that preheater can be adapted to flue gas pipeline and carry out close connection, guarantee quick connection and the sealing property after connection, set up two adjusting rods and two threaded rods in drive assembly, cooperate first transmission wheel, second transmission wheel and toothed transmission belt use, can carry out multi -point adjustment and improve stability, can also carry out synchronous drive adjustment, ensure the normal progress of adjustment.

Description

Technical Field

[0001] This utility model relates to the field of heat exchange technology, and in particular to a plate preheater with good heat exchange effect. Background Technology

[0002] Plate preheaters are efficient and compact heat exchange devices widely used in heat recovery and preheating processes in industries such as chemical, power, metallurgy, and building materials. Their core function is to transfer heat from high-temperature fluids (such as flue gas and steam) to low-temperature fluids (such as air and water) through heat exchange between the plates, thereby achieving cascaded energy utilization and energy conservation and emission reduction.

[0003] Plate preheaters are connected to flue gas ducts horizontally via connecting plates and to air ducts vertically. The corrugated plates create channels for transporting flue gas and air respectively, achieving efficient heat exchange. However, in existing plate preheaters, when installed between flue gas ducts, a tight fit at the connection points is crucial for sealing. Due to the fixed installation of the flue gas ducts, the plate preheater may be too long or too short. Too long a preheater affects installation, while too short a preheater compromises sealing after installation, resulting in poor compatibility and mediocre performance. Utility Model Content

[0004] The main purpose of this invention is to provide a plate preheater with good heat exchange effect, which can effectively solve the problems in the background art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A plate preheater with good heat exchange effect includes a preheater body, the interior of which is provided with corrugated plates, and the interior of the preheater body forms flue gas passages and air passages through the corrugated plates. Flue gas pipe connection structures are provided at both ends of the preheater body.

[0007] Preferably, the flue gas passage on the preheater body is fully connected in the horizontal direction, and the air passage is fully connected in the vertical direction.

[0008] Preferably, an air inlet seat is provided at the lower end of the preheater body, and an air duct connection frame is installed at the upper end of the preheater body.

[0009] Preferably, the flue gas duct connection structure includes a fixed cover, a square tube, a first sealing strip, a movable tube, a connecting plate, a drive assembly, and a second sealing strip. The fixed cover and the square tube are fixedly connected, and the fixed cover is installed on the preheater body. The first sealing strip is disposed on the inner side of the square tube. The movable tube and the connecting plate are fixedly connected, and the end of the movable tube is inserted into the square tube. The drive assembly is disposed on the square tube and is connected to the connecting plate. The second sealing strip is disposed on the movable tube.

[0010] Preferably, the drive assembly includes a mounting plate, an adjusting rod, a rotating shaft, a threaded rod, a servo motor, a first transmission wheel, a second transmission wheel, and a toothed transmission belt. Two mounting plates are welded onto a square tube, two adjusting rods are fixed to a connecting plate, two rotating shafts are rotatably mounted on the two mounting plates respectively, and the rotating shafts are fixedly connected to the threaded rods. The threaded rods are threadedly connected to the adjusting rods. The servo motor is mounted on one mounting plate and connected to one of the rotating shafts. The first transmission wheel and the second transmission wheel are respectively disposed on the two rotating shafts, and the toothed transmission belt is sleeved on the first transmission wheel and the second transmission wheel.

[0011] Compared with the prior art, this utility model has the following beneficial effects: This plate preheater with good heat exchange effect, through the set flue gas pipe connection structure, has a movable tube set inside the square tube. It works with the first sealing strip, the second sealing strip and the drive assembly. The position of the movable tube can be adjusted by the drive assembly, changing the position of the connecting plate relative to the preheater body, and adjusting the length of the entire preheater. This ensures that the preheater can be tightly connected to the flue gas pipe, ensuring quick connection and sealing after connection. The drive assembly is equipped with two adjusting rods and two threaded rods, which work with the first transmission wheel, the second transmission wheel and the toothed transmission belt. This allows for multi-point adjustment to improve stability, as well as synchronous drive adjustment to ensure normal adjustment. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0013] Figure 2 This is a schematic diagram of the internal structure of the preheater body of this utility model;

[0014] Figure 3 This is a schematic diagram of the flue gas duct connection structure of this utility model;

[0015] Figure 4 This is a schematic diagram of the structure of the drive component of this utility model.

[0016] In the diagram: 1. Preheater body; 2. Flue gas passage; 3. Air passage; 4. Air inlet seat; 5. Flue gas duct connection structure; 501. Fixed cover; 502. Square tube; 503. First sealing strip; 504. Movable tube; 505. Connecting plate; 506. Drive assembly; 5061. Mounting plate; 5062. Adjusting rod; 5063. Rotating shaft; 5064. Threaded rod; 5065. Servo motor; 5066. First transmission wheel; 5067. Second transmission wheel; 5068. Toothed transmission belt; 507. Second sealing strip; 6. Air duct connection frame. Detailed Implementation

[0017] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0018] like Figures 1-4 As shown, a plate preheater with good heat exchange effect includes a preheater body 1. Corrugated plates are installed inside the preheater body 1, forming a flue gas passage 2 and an air passage 3. Flue gas pipe connection structures 5 are provided at both ends of the preheater body 1. The flue gas passage 2 is completely horizontally connected to the preheater body 1, and the air passage 3 is completely vertically connected to the preheater body 1. An air inlet seat 4 is provided at the lower end of the preheater body 1, and an air pipe connection bracket 6 is installed at the upper end of the preheater body 1.

[0019] When installing a plate preheater with good heat exchange effect, place the plate preheater between the flue gas ducts, adjust the flue gas duct connection structure 5, and then connect the flue gas duct to the flue gas duct connection structure 5 through the connecting flange to complete the installation of the plate preheater. Then, connect the air duct to the air duct connection bracket 6 for use.

[0020] During use, heated flue gas is transported from the flue gas duct connection structure 5 to the preheater body 1, then flows along the flue gas channel 2, and finally exits from the other end of the flue gas duct connection structure 5 into the corresponding duct for continued transport. At the same time, air enters the air channel 3 in the preheater body 1 from the air inlet seat 4. The heat in the flue gas is transferred to the air through the corrugated plate inside the preheater body 1 to preheat the air. Finally, the preheated air is discharged from the duct at the air duct connection frame 6, achieving the effect of energy saving and emission reduction.

[0021] According to the above implementation scheme, the flue gas duct connection structure 5 includes a fixed cover 501, a square tube 502, a first sealing strip 503, a movable tube 504, a connecting plate 505, a drive assembly 506, and a second sealing strip 507. The fixed cover 501 and the square tube 502 are fixedly connected, and the fixed cover 501 is installed on the preheater body 1. The first sealing strip 503 is disposed on the inner side of the square tube 502. The movable tube 504 and the connecting plate 505 are fixedly connected, and the end of the movable tube 504 is inserted into the square tube 502. The drive assembly 506 is disposed on the square tube 502 and is connected to the connecting plate 505. The second sealing strip 507 is disposed on the movable tube 504.

[0022] Between the preheater body 1 and the installation, the drive assembly 506 is activated to adjust the position of the movable pipe 504 and the connecting plate 505, so that the movable pipe 504 moves along the square pipe 502 to make room. Then, the entire preheater is placed between the flue gas ducts. The drive assembly 506 is activated again to adjust the movable pipe 504 and the connecting plate 505 so that the connecting plate 505 is close to the end of the flue gas duct. Then, the connection and fixation are completed. During use, the flue gas enters the flue gas channel 2 through the movable pipe 504, square pipe 502 and fixed cover 501 in one set of flue gas duct connection structure 5, and then exits from the fixed cover 501, square pipe 502 and movable pipe 504 in another set of flue gas duct connection structure 5, realizing the normal transportation of flue gas. The first sealing strip 503 and the second sealing strip 507 ensure the sealing of the flue gas transportation.

[0023] The drive assembly 506 includes a mounting plate 5061, an adjusting rod 5062, a rotating shaft 5063, a threaded rod 5064, a servo motor 5065, a first transmission wheel 5066, a second transmission wheel 5067, and a toothed transmission belt 5068. Two mounting plates 5061 are welded to a square tube 502. Two adjusting rods 5062 are fixed to a connecting plate 505. Two rotating shafts 5063 are rotatably mounted on the two mounting plates 5061 respectively, and the rotating shafts 5063 are fixedly connected to the threaded rods 5064. The threaded rods 5064 are threadedly connected to the adjusting rods 5062. The servo motor 5065 is mounted on one of the mounting plates 5061 and is connected to one of the rotating shafts 5063. The first transmission wheel 5066 and the second transmission wheel 5067 are respectively disposed on the two rotating shafts 5063. The toothed transmission belt 5068 is sleeved on the first transmission wheel 5066 and the second transmission wheel 5067.

[0024] When adjusting the position of the movable tube 504, after starting the servo motor 5065, the corresponding rotating shaft 5063 rotates on the mounting plate 5061 with the threaded rod 5064. During this process, the first transmission wheel 5066 rotates synchronously with the second transmission wheel 5067 through the toothed transmission belt 5068, so that the other rotating shaft 5063 rotates synchronously with the threaded rod 5064 on the corresponding mounting plate 5061. Under the rotation of the two threaded rods 5064, the two adjusting rods 5062 move axially synchronously, so that the movable tube 504 moves and is adjusted through the connecting plate 505, so as to make way or close together, making the installation of the entire preheater more flexible and convenient.

[0025] It should be noted that, through the flue gas duct connection structure 5, a movable tube 504 is set inside the square tube 502. It works in conjunction with the first sealing strip 503, the second sealing strip 507, and the drive assembly 506. The position of the movable tube 504 can be adjusted using the drive assembly 506, thereby changing the position of the connecting plate 505 relative to the preheater body 1 and adjusting the length of the entire preheater. This ensures that the preheater can be tightly connected to the flue gas duct, guaranteeing quick connection and sealing after connection. The drive assembly 506 is equipped with two adjusting rods 5062 and two threaded rods 5064, which work in conjunction with the first transmission wheel 5066, the second transmission wheel 5067, and the toothed transmission belt 5068. This allows for multi-point adjustment to improve stability and synchronous drive adjustment to ensure normal adjustment.

[0026] The foregoing describes the working principle, features, and beneficial effects of this utility model. Those skilled in the art will understand from the foregoing that it does not limit the utility model. The embodiments and description above illustrate the basic principles and features of this utility model. Various changes and improvements can be made to this utility model while remaining consistent with its concept, and all such improvements should fall within the scope of protection claimed by this utility model.

Claims

1. A plate preheater with good heat exchange effect, comprising a preheater body (1), wherein a corrugated plate is provided inside the preheater body (1), and a flue gas passage (2) and an air passage (3) are formed inside the preheater body (1) through the corrugated plate, characterized in that: The preheater body (1) is provided with flue gas pipe connection structures (5) at both ends.

2. The plate preheater with good heat exchange effect according to claim 1, characterized in that: The flue gas passage (2) on the preheater body (1) is fully connected in the horizontal direction, and the air passage (3) is fully connected in the vertical direction.

3. A plate preheater with good heat exchange effect according to claim 2, characterized in that: The lower end of the preheater body (1) is provided with an air inlet seat (4), and the upper end of the preheater body (1) is provided with an air duct connection frame (6).

4. A plate preheater with good heat exchange effect according to claim 3, characterized in that: The flue gas duct connection structure (5) includes a fixed cover (501), a square tube (502), a first sealing strip (503), a movable tube (504), a connecting plate (505), a drive assembly (506), and a second sealing strip (507). The fixed cover (501) and the square tube (502) are fixedly connected, and the fixed cover (501) is installed on the preheater body (1). The first sealing strip (503) is disposed on the inner side of the square tube (502). The movable tube (504) and the connecting plate (505) are fixedly connected, and the end of the movable tube (504) is inserted into the square tube (502). The drive assembly (506) is disposed on the square tube (502) and is connected to the connecting plate (505). The second sealing strip (507) is disposed on the movable tube (504).

5. A plate preheater with good heat exchange effect according to claim 4, characterized in that: The drive assembly (506) includes a mounting plate (5061), an adjusting rod (5062), a rotating shaft (5063), a threaded rod (5064), a servo motor (5065), a first transmission wheel (5066), a second transmission wheel (5067), and a toothed transmission belt (5068). Two mounting plates (5061) are welded to a square tube (502). Two adjusting rods (5062) are fixed to a connecting plate (505). Two rotating shafts (5063) are rotatably mounted on the two mounting plates (5061) respectively. (5063) is fixedly connected to the threaded rod (5064), the threaded rod (5064) is threadedly connected to the adjusting rod (5062), the servo motor (5065) is mounted on a mounting plate (5061), and the servo motor (5065) is connected to one of the rotating shafts (5063). The first transmission wheel (5066) and the second transmission wheel (5067) are respectively set on the two rotating shafts (5063), and the toothed transmission belt (5068) is sleeved on the first transmission wheel (5066) and the second transmission wheel (5067).

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