Horizontal shell and tube heat exchanger

Abstract

The invention discloses a horizontal shell and tube heat exchanger, which relates to the technical field of heat exchangers and comprises a shell, two sides of the shell are fixedly connected with a first tube box and a second tube box respectively, an inner cavity of the shell is provided with a plurality of baffle plates, each baffle plate is provided with a plurality of heat exchange tubes, and one side of each baffle plate is provided with a control assembly mounted in the second tube box. According to the horizontal shell and tube heat exchanger, the scraping ring can move left and right along with the movable rod, impurities on the outer wall of the heat exchange tube can be scraped away, in the long-term operation process of heat exchange equipment, various impurities are prone to being accumulated on the outer wall of the heat exchange tube, the impurities can reduce the heat exchange efficiency and increase the energy consumption of the equipment, and the scraping ring can slide to clean the heat exchange tube. The impurities can be effectively removed in time, the surface of the heat exchange pipe is kept clean, it is ensured that heat exchange equipment is in a good working state all the time, good heat exchange between a heat exchange medium and the heat exchange pipe can be ensured through the clean outer wall of the heat exchange pipe, heat resistance is reduced, and therefore the heat exchange efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of heat exchangers, and particularly to a horizontal shell-and-tube heat exchanger. Background Art

[0002] As a common heat exchange device, the horizontal shell-and-tube heat exchanger plays a crucial role in many industrial fields such as chemical industry, electric power, and refrigeration. Its basic structure usually consists of components such as a shell, heat exchange tube bundles, and baffle plates. The heat exchange tube bundles are placed inside the shell, and the heat exchange media flow in the heat exchange tubes and the space between the shell and the heat exchange tubes respectively, and heat exchange is achieved through the heat exchange tube walls. The baffle plates play a role in changing the fluid flow direction and improving the heat exchange efficiency.

[0003] In the prior art, to maintain the normal operation of the horizontal shell-and-tube heat exchanger, some conventional cleaning and maintenance measures are usually taken. For example, for the problem that impurities such as scale, dust, and sediments are likely to accumulate on the outer wall of the heat exchange tubes, a method of regular shutdown for manual cleaning may be adopted. By disassembling some components of the heat exchanger and using chemical cleaning agents or mechanical tools to clean the outer wall of the heat exchange tubes, the accumulated impurities are removed to restore the heat exchange efficiency. For the problem of impurity accumulation on the surface and near the baffle plates, the baffle plates are also cleaned during equipment shutdown and maintenance to ensure the smoothness of the fluid passage.

[0004] However, there are many defects in the prior art. First, the method of regular shutdown for manual cleaning of impurities on the outer wall of the heat exchange tubes is not only cumbersome in operation and labor-intensive, but also requires the equipment to be shut down, which will cause production interruption, affect production efficiency, and increase the operating cost of the enterprise. At the same time, the use of chemical cleaning agents may cause certain corrosion to the heat exchange tubes and shorten the service life of the heat exchange tubes; mechanical cleaning may cause damage to the surface of the heat exchange tubes due to improper operation, affecting the heat exchange effect.

[0005] Secondly, for the problem of impurity accumulation on the surface and near the baffle plates, the existing cleaning methods are often not timely and effective. During the operation of the heat exchange equipment, impurities in the medium will continuously accumulate on the surface or near the baffle plates, and the regular shutdown cleaning cannot solve this problem in real time, resulting in the gradual narrowing of the fluid passage, an increase in fluid flow resistance, and a decrease in heat exchange efficiency. Moreover, the accumulation of impurities on the baffle plates may also cause problems such as local corrosion, further affecting the safety and reliability of the equipment. Summary of the Invention

[0006] In view of the deficiencies of the prior art, the present invention provides a horizontal shell-and-tube heat exchanger, which solves the technical problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: a horizontal shell and tube heat exchanger, comprising a shell, a first tube box and a second tube box are fixedly connected to both sides of the shell, a plurality of baffles are arranged in the inner cavity of the shell, and a plurality of heat exchange tubes are arranged on the baffles, and a control component installed in the second tube box is arranged on one side of the baffle;

[0008] The control component includes a movable rod fixedly installed at the axial center of the inner cavity of the shell, and the baffle is fixedly installed on the movable rod. A sliding groove is opened on the movable rod, and the sliding groove is slidably connected with a cross fixedly installed on both sides of the baffle, and the cross is slidably installed on the movable rod. The end of the cross is fixedly connected with a connecting rod, and a scraper ring for sliding cleaning the outer wall of the heat exchange tube is fixedly connected through the connecting rod.

[0009] As a further preferred embodiment of the present technical solution, mounting plates are fixedly connected to both ends of the cross surface, a striking hammer is movably connected to the inner end of the mounting plate, and a first damping spring is arranged between the striking hammer and the mounting plate.

[0010] As a further preferred embodiment of the present technical solution, the control component also includes a fixed frame fixedly installed in the inner cavity of the second pipe box, a driving motor is fixedly installed on the fixed frame, a rotating rod is fixedly connected to the output end of the driving motor, a disc is fixedly connected to the end of the rotating rod, a convex rod is fixedly connected to the position of the disc deviating from the center of the circle, cross bars are slidably connected on both sides of the fixed frame, one end of one of the cross bars is sealed and slidably penetrates into the movable rod, and the baffle and the cross are fixedly installed on the cross bar, the inner ends of the two cross bars are fixedly connected to a connecting frame, a sliding groove is opened on the surface of the connecting frame, and the convex rod is slidably installed in the sliding groove.

[0011] As a further preferred embodiment of the present technical solution, a positioning rod is rotatably connected to one side of the fixed frame, one end of the positioning rod is transmission-connected to the rotating rod through a synchronous pulley transmission member, the other end of the positioning rod is fixedly connected to a cam, and fixed rods fixedly installed on the fixed frame are arranged on both sides of the positioning rod, and sliding plates are slidably connected on both sides of the fixed rod, and knocking rods for knocking the movable rod are arranged at the end of the sliding plate, and a second damping spring mounted on the fixed rod is arranged on the outside of the sliding plate.

[0012] As a further preferred embodiment of the present technical solution, rectangular plates fixedly mounted on movable rods are provided on both sides of the slide groove, and the two rectangular plates are located on both sides of the cross, a row of movable grooves are provided on the surfaces of the rectangular plates, and a row of trapezoidal blocks are fixedly connected to the outer walls of the rectangular plates, and the movable grooves and the trapezoidal blocks are staggered, and the ends of the striking hammers are located in the movable grooves and the trapezoidal blocks corresponding to each other.

[0013] As a further preference of the present technical solution, a liquid inlet pipe is communicated and arranged on one side of the top of the housing, a liquid discharge pipe is communicated and arranged on the other side of the bottom of the housing, sealing discs are fixedly connected to both ends of the housing, the movable rod is fixedly installed on the sealing discs, and the heat exchange pipe is fixedly installed on the sealing discs. Both ends of the heat exchange pipe are communicated and arranged with the first tube sheet and the second tube sheet respectively.

[0014] As a further preference of the present technical solution, a fluid inlet is communicated and arranged on the top of the first tube sheet, a fluid outlet is communicated and arranged on the bottom of the first tube sheet, and a partition plate is fixedly connected to the inner cavity of the first tube sheet. The partition plate divides the first tube sheet into upper and lower parts.

[0015] As a further preference of the present technical solution, a baffle is fixedly connected to the inner cavity of the second tube sheet. The baffle divides the inner cavity of the second tube sheet into left and right parts. The left side is the control area, and the right side is the liquid area.

[0016] Compared with the prior art, the following beneficial effects are achieved:

[0017] Through the scraping ring, it can move left and right along with the movable rod, and can scrape and remove the impurities on the outer wall of the heat exchange pipe. During the long-term operation of the heat exchange equipment, various impurities such as scale, dust, and sediment are likely to accumulate on the outer wall of the heat exchange pipe. These impurities will reduce the heat exchange efficiency and increase the energy consumption of the equipment. However, the sliding cleaning effect of the scraping ring can timely and effectively remove these impurities, keep the surface of the heat exchange pipe clean, and ensure that the heat exchange equipment is always in a good working state. The clean outer wall of the heat exchange pipe can ensure good heat exchange between the heat exchange medium and the heat exchange pipe, reduce the thermal resistance, and thus improve the heat exchange efficiency. The timely scraping of impurities by the scraping ring effectively prevents the formation of a heat insulation layer by impurities on the outer wall of the heat exchange pipe, enabling heat to be transferred more quickly and effectively between the heat exchange medium and the heat exchange pipe, thereby improving the performance of the entire heat exchange equipment. Moreover, the cleaning effect of the scraping ring can reduce the damage of impurities to the heat exchange pipe, reduce the risk of the heat exchange pipe failing due to overheating or corrosion, thereby extending the service life of the heat exchange equipment and reducing the replacement cost of the equipment.

[0018] The reciprocating knocking treatment is successively performed on the upper and lower ends of the movable rod by two knocking rods, so that the movable rod transmits the vibration to the baffle plate. During the operation of the heat exchange equipment, the medium around the heat exchange tubes may contain impurities, and these impurities are likely to accumulate on or near the surface of the baffle plate, affecting the normal flow of the fluid and the heat exchange efficiency. By reciprocatingly knocking the movable rod with the knocking rod, the movable rod transmits the vibration to the baffle plate, and the vibration can loosen the impurities on and near the surface of the baffle plate, prevent the further accumulation of impurities, ensure the smoothness of the fluid channel, and thus improve the operation efficiency of the heat exchange equipment. The vibration can also generate a certain acting force on the outer wall of the heat exchange tube, enabling the scraping ring to better remove the impurities on the outer wall of the heat exchange tube. Even if the scraping ring cannot completely clean all the impurities during the movement, the vibration can also separate some stubborn impurities from the outer wall of the heat exchange tube, facilitating subsequent cleaning or discharging with the fluid, and further improving the cleaning degree and heat exchange performance of the heat exchange tube.

[0019] By rotating and knocking the end of the knocking hammer towards one side of the cross, the cross can transmit the vibration to the scraping ring and the baffle plate. The scraping ring is used to clean the impurities on the outer wall of the heat exchange tube. After the vibration is transmitted to the scraping ring, it can cause the scraping ring to generate a small vibration during the sliding cleaning process. This vibration can enhance the impact force of the scraping ring on the impurities on the outer wall of the heat exchange tube, making it easier for some stubborn impurities to separate from the heat exchange tube, improving the cleaning efficiency of the scraping ring, ensuring that the outer wall of the heat exchange tube remains clean for a long time, and thus maintaining the efficient operation of the heat exchange equipment. The baffle plate plays a role in changing the flow direction of the fluid in the heat exchange equipment, but the fluid may carry impurities and is likely to accumulate on or near the surface of the baffle plate. After the vibration is transmitted to the baffle plate, it can loosen the impurities on the surface of the baffle plate, prevent the formation of an accumulation layer of impurities on the baffle plate, reduce the problem of poor fluid flow caused by the accumulation of impurities, ensure that the fluid can flow smoothly along the designed path, and improve the heat exchange effect. During the long-term operation process, components such as the scraping ring and the baffle plate may become stuck or move smoothly due to reasons such as impurity accumulation and component wear. The vibration can cause these components to generate small vibrations, prevent the components from sticking or getting stuck due to long-term contact, ensure the normal movement of each component, improve the operation stability of the equipment, and reduce equipment failures and downtime caused by component jams. Description of the Drawings

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 It is a schematic cross-sectional view of the structure of the housing in the present invention;

[0022] Figure 3 It is a schematic diagram of the structure of the baffle plate in the present invention;

[0023] Figure 4 It is Figure 4 The enlarged view of part A in

[0024] Figure 5 Schematic structural diagrams of the baffle, fixed bracket, movable rod, and cross bar in the present invention;

[0025] Figure 6 Schematic structural diagrams of the fixed bracket, disc, connecting frame, cross bar, and movable rod in the present invention;

[0026] Figure 7 Schematic structural diagrams of the cam and sliding plate in the present invention;

[0027] Figure 8 Schematic structural diagrams of the baffle, cross, hammer, movable rod, rectangular plate, and trapezoidal block in the present invention.

[0028] In the figure: 1, housing; 2, first tube sheet; 3, second tube sheet; 4, heat exchange tube; 5, baffle; 11, liquid inlet pipe; 12, liquid discharge pipe; 13, sealing disc; 21, fluid inlet; 22, fluid outlet; 23, partition plate; 31, baffle; 32, liquid area; 33, control area; 51, movable rod; 52, cross; 53, connecting rod; 54, scraping ring; 55, mounting plate; 56, hammer; 57, first damping spring; 58, fixed bracket; 59, drive motor; 510, rotating rod; 511, disc; 512, convex rod; 513, connecting frame; 514, cross bar; 515, sliding groove; 516, positioning rod; 517, synchronous belt pulley transmission member; 518, cam; 519, fixed rod; 520, sliding plate; 521, second damping spring; 522, striking rod; 523, rectangular plate; 524, movable groove; 525, trapezoidal block. Specific embodiments

[0029] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings of the specification. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0030] Embodiment 1: In combination with Figures 1-8 As shown, the present invention provides a technical solution: a horizontal shell-and-tube heat exchanger, including a housing 1, a first tube sheet 2 and a second tube sheet 3 are respectively fixedly connected to both sides of the housing 1, a plurality of baffle plates 5 are arranged in the inner cavity of the housing 1, a number of heat exchange tubes 4 are arranged on these baffle plates 5, and a control component is installed on one side of the baffle plate 5, and this control component is arranged in the second tube sheet 3;

[0031] The control component includes a movable rod 51 fixedly installed at the axial center position of the inner cavity of the housing 1. The baffle 5 is fixedly installed on the movable rod 51. A chute is provided on the movable rod 51. On the chute, a cross 52 fixedly installed on both sides of the baffle 5 is slidably connected. The cross 52 is slidably installed on the movable rod 51, and its end is fixedly connected with a connecting rod 53. Through the connecting rod 53, a scraping ring 54 for slidingly cleaning the outer wall of the heat exchange tube 4 is fixedly connected. In addition, a mounting plate 55 is sealingly and slidably installed on the heat exchange tube 4. When the movable rod 51 moves left and right, it can drive the baffle 5, the cross 52, the connecting rod 53, and the scraping ring 54 to move synchronously, so that the left and right moving scraping ring 54 can effectively scrape the impurities on the outer wall of the heat exchange tube 4;

[0032] To further improve the cleaning efficiency, mounting plates 55 are fixedly connected to both ends of the surface of the cross 52. The inner ends of the mounting plates 55 are movably connected with knocking hammers 56. A first damping spring 57 is arranged between the knocking hammers 56 and the mounting plates 55. The first damping spring 57 pushes the knocking hammers 56 to move towards the cross 52 under the elastic force, so as to knock and clean the impurities on the outer wall of the heat exchange tube 4 to ensure the cleanliness of the heat exchange tube 4 and improve the heat exchange efficiency;

[0033] The control component further includes a fixing frame 58 fixedly installed in the inner cavity of the second tube box 3. A driving motor 59 is fixedly installed on the fixing frame 58. The output end of the driving motor 59 is fixedly connected to a rotating rod 510. The end of the rotating rod 510 is fixedly connected to a disc 511. A convex rod 512 is fixedly connected to a position on the disc 511 deviating from the center of the circle. Cross bars 514 are slidably connected to both sides of the fixing frame 58. One end of one of the cross bars 514 is hermetically slid through into the movable rod 51, and the baffle 5 and the cross 52 are fixedly installed on the cross bar 514. The inner ends of the two cross bars 514 are fixedly connected to a connecting frame 513. A chute 515 is formed on the surface of the connecting frame 513. The convex rod 512 is slidably installed in the chute 515. By starting the driving motor 59 to drive the rotating rod 510 to rotate synchronously, the rotating rod 510 drives the disc 511 and the convex rod 512 to rotate synchronously, so that the convex rod 512 slides in the chute 515, thereby driving the connecting frame 513 and the cross bar 514 to reciprocate through the convex rod 512, and further enabling the cross bar 514 to drive the movable rod 51 to reciprocate. The movement of the movable rod 51 can drive the baffle 5, the cross 52, the connecting rod 53, and the scraping ring 54 to move synchronously, so that the scraping ring 54 moving left and right can scrape the impurities on the outer wall of the heat exchange tube 4. The scraping ring 54 can move left and right along with the movable rod 51 to scrape the impurities on the outer wall of the heat exchange tube 4. During the long-term operation of the heat exchange device, various impurities such as scale, dust, and sediment are likely to accumulate on the outer wall of the heat exchange tube 4. These impurities will reduce the heat exchange efficiency and increase the energy consumption of the device. The sliding cleaning effect of the scraping ring 54 can timely and effectively remove these impurities, keep the surface of the heat exchange tube 4 clean, and ensure that the heat exchange device is always in a good working state. The clean outer wall of the heat exchange tube 4 can ensure good heat exchange between the heat exchange medium and the heat exchange tube 4, reduce the thermal resistance, and thus improve the heat exchange efficiency. The timely scraping of impurities by the scraping ring 54 effectively prevents the formation of a heat insulation layer by impurities on the outer wall of the heat exchange tube 4, enabling heat to be transferred more quickly and effectively between the heat exchange medium and the heat exchange tube 4, thereby improving the performance of the entire heat exchange device. Moreover, the cleaning effect of the scraping ring 54 can reduce the damage of impurities to the heat exchange tube 4, reduce the risk of the heat exchange tube 4 malfunctioning due to overheating or corrosion, thereby extending the service life of the heat exchange device and reducing the replacement cost of the device;

[0034] A positioning rod 516 is rotatably connected to one side of the fixed frame 58, one end of the positioning rod 516 is transmission-connected to the rotating rod 510 through a synchronous belt pulley transmission member 517, and the other end of the positioning rod 516 is fixedly connected to a cam 518. Both sides of the positioning rod 516 are provided with fixed rods 519 fixedly installed on the fixed frame 58, and both sides of the fixed rod 519 are slidably connected with a sliding plate 520, and the end of the sliding plate 520 is provided with a knocking rod 522 for knocking the movable rod 51, and the outer side of the sliding plate 520 is provided with a cam sleeved on the fixed rod 519. The second damping spring 521 can push the slide plate 520 to move toward one side of the cam 518 under the elastic force of the second damping spring 521, so that the slide plate 520 and the side wall of the cam 518 are fitted and slid. When the driving motor 59 drives the rotating rod 510 to rotate, the rotating rod 510 can drive the positioning rod 516 to rotate synchronously through the synchronous belt pulley transmission member 517, so that the positioning rod 516 drives the cam 518 to rotate synchronously. When the cam 518 rotates, the elastic force of the second damping spring 521 can make the slide plate 520 slide in contact with the side wall of the cam 518. 20. The knocking rod 522 moves back and forth, so that the two knocking rods 522 knock the upper and lower ends of the movable rod 51 back and forth in turn. The knocking rod 522 knocks the movable rod 51 back and forth, and the movable rod 51 transmits the vibration to the baffle 5. During the operation of the heat exchange equipment, the medium around the heat exchange tube 4 may contain impurities. These impurities are easy to accumulate on or near the surface of the baffle 5, affecting the normal flow of the fluid and the heat exchange efficiency. The knocking rod 522 knocks the movable rod 51 back and forth, and the movable rod 51 transmits the vibration to The vibration of the baffle plate 5 can loosen the impurities on and near the surface of the baffle plate 5, prevent further accumulation of impurities, ensure the smooth flow of the fluid channel, and thus improve the operating efficiency of the heat exchange equipment. The vibration can also exert a certain force on the outer wall of the heat exchange tube 4, so that the scraper ring 54 can better remove the impurities on the outer wall of the heat exchange tube 4. Even if the scraper ring 54 cannot completely clean all the impurities during the movement, the vibration can separate some stubborn impurities from the outer wall of the heat exchange tube 4, which is convenient for subsequent cleaning or discharge with the fluid, further improving the cleanliness and heat exchange performance of the heat exchange tube 4.

[0035] On both sides of the sliding groove, there are rectangular plates 523 fixedly installed on the movable rod 51, and the two rectangular plates 523 are located on both sides of the cross 52. A row of movable grooves 524 are formed on the surface of the rectangular plate 523, and a row of trapezoidal blocks 525 are fixedly connected to the outer wall of the rectangular plate 523. The movable groove 524 and the trapezoidal block 525 are arranged in a staggered manner. The end of the knocking hammer 56 is located at the position where the movable groove 524 and the trapezoidal block 525 correspond to each other. When the baffle 5 and the cross 52 reciprocate, they can drive the mounting plate 55 and the knocking hammer 56 to reciprocate. When the end of the knocking hammer 56 moves from the movable groove 524 to the trapezoidal block 525, the knocking hammer 56 moves outward under the action of the trapezoidal block 525 and compresses the first damping spring 57. When the end of the knocking hammer 56 moves from the trapezoidal block 525 to the movable groove 524, under the elastic force of the first damping spring 57, it pushes the end of the knocking hammer 56 to rotate and knock towards the cross 52 side, so that the cross 52 can transmit the vibration to the scraping ring 54 and the baffle 5. The scraping ring 54 is used to clean the impurities on the outer wall of the heat exchange tube 4. After the vibration is transmitted to the scraping ring, it can make the scraping ring 54 generate a small vibration during the sliding cleaning process. This vibration can enhance the impact force of the scraping ring 54 on the impurities on the outer wall of the heat exchange tube 4, making some stubborn impurities easier to separate from the heat exchange tube 4, improving the cleaning efficiency of the scraping ring 54, ensuring that the outer wall of the heat exchange tube 4 remains clean for a long time, and thus maintaining the efficient operation of the heat exchange equipment. The baffle 5 plays a role in changing the fluid flow direction in the heat exchange equipment, but the fluid may carry impurities and is likely to accumulate on the surface or near the baffle 5. After the vibration is transmitted to the baffle 5, it can loosen the impurities on the surface of the baffle 5, prevent the impurities from forming an accumulation layer on the baffle 5, reduce the problem of poor fluid flow caused by the accumulation of impurities, ensure that the fluid can flow smoothly along the designed path, and improve the heat exchange effect. During the long-term operation process, components such as the scraping ring 54 and the baffle 5 may become stuck or move smoothly due to reasons such as impurity accumulation and component wear. The vibration can make these components generate small vibrations, prevent the components from sticking or getting stuck due to long-term contact, ensure that each component can move normally, improve the operation stability of the equipment, and reduce the equipment failures and downtime caused by component jams.

[0036] In an embodiment of the present invention, by starting the driving motor 59, the rotating rod 510 is driven to rotate synchronously. The rotating rod 510 drives the disk 511 and the convex rod 512 to rotate together. As the convex rod 512 slides in the chute 515, it pushes the connecting frame 513 and the cross bar 514 to move reciprocally. This reciprocating movement further drives the movable rod 51 to perform corresponding reciprocating motions. The movement of the movable rod 51 causes the baffle plate 5, the cross 52, the connecting rod 53, and the scraping ring 54 to move synchronously. During the left-right movement of the scraping ring 54, it can effectively scrape the impurities on the outer wall of the heat exchange tube 4. During the long-term operation of the heat exchange device, various impurities are likely to accumulate on the outer wall of the heat exchange tube 4, including scale, dust, sediment, etc. These impurities will reduce the heat exchange efficiency and increase the energy consumption of the device. The sliding cleaning effect of the scraping ring 54 can timely and effectively remove these impurities, keep the surface of the heat exchange tube clean, and ensure that the heat exchange device is always in a good working state. The clean outer wall of the heat exchange tube 4 can ensure good heat exchange between the heat exchange medium and the heat exchange tube, reduce the thermal resistance, and thus improve the heat exchange efficiency. The timely scraping of impurities by the scraping ring 54 effectively prevents the formation of a heat insulation layer of impurities on the outer wall of the heat exchange tube, enabling heat to be transferred more quickly and effectively between the heat exchange medium and the heat exchange tube, thereby enhancing the performance of the entire heat exchange device. In addition, the cleaning effect of the scraping ring 54 can reduce the damage of impurities to the heat exchange tube, reduce the risk of the heat exchange tube failing due to overheating or corrosion, thereby extending the service life of the heat exchange device and reducing the replacement cost of the device;

[0037] During the startup of the drive motor 59 and the rotation of the rotating rod 510, the rotating rod 510 can drive the synchronous rotation of the positioning rod 516 through the synchronous pulley transmission member 517. The rotation of the positioning rod 516 will drive the synchronous rotation of the cam 518. When the cam 518 rotates, with the elastic force of the second damping spring 521, it can make the sliding plate 520 and the knocking rod 522 move reciprocally. This reciprocal movement enables the two knocking rods 522 to reciprocally knock the upper and lower ends of the movable rod 51 in sequence. The movable rod 51 transmits the vibration to the baffle plate 5. During the operation of the heat exchange equipment, the medium around the heat exchange tube 4 may contain impurities, and these impurities are likely to accumulate on or near the surface of the baffle plate 5, affecting the normal flow of the fluid and the heat exchange efficiency. By reciprocally knocking the movable rod 51 with the knocking rod 522, the movable rod 51 transmits the vibration to the baffle plate 5. The vibration can loosen the impurities on and near the surface of the baffle plate 5, prevent the further accumulation of impurities, ensure the smoothness of the fluid channel, and thus improve the operation efficiency of the heat exchange equipment. The vibration can also generate a certain force on the outer wall of the heat exchange tube 4, enabling the scraping ring 54 to better remove the impurities on the outer wall of the heat exchange tube 4. Even if the scraping ring 54 cannot completely clean all the impurities during the movement, the vibration can separate some stubborn impurities from the outer wall of the heat exchange tube 4, facilitating subsequent cleaning or discharging with the fluid, further improving the cleanliness and heat exchange performance of the heat exchange tube 4;

[0038] During the reciprocating movement of the baffle 5 and the cross 52, the mounting plate 55 and the knocking hammer 56 can be driven to perform corresponding reciprocating movements. When the end of the knocking hammer 56 moves from the movable groove 524 to the trapezoidal block 525, the knocking hammer 56 moves outward under the action of the trapezoidal block 525 and compresses the first damping spring 57. When the end of the knocking hammer 56 moves from the trapezoidal block 525 to the movable groove 524, under the elastic force of the first damping spring 57, the end of the knocking hammer 56 is pushed to rotate and knock towards the cross 52. In this way, the cross 52 can transmit the vibration to the scraping ring 54 and the baffle 5. The scraping ring 54 is used to clean the impurities on the outer wall of the heat exchange tube 4. After the vibration is transmitted to the scraping ring, it can cause the scraping ring 54 to generate a small vibration during the sliding cleaning process. This vibration can enhance the impact force of the scraping ring 54 on the impurities on the outer wall of the heat exchange tube 4, making it easier for some stubborn impurities to separate from the heat exchange tube 4, improving the cleaning efficiency of the scraping ring 54, ensuring that the outer wall of the heat exchange tube 4 remains clean for a long time, and thus maintaining the efficient operation of the heat exchange equipment. The baffle 5 plays a role in changing the flow direction of the fluid in the heat exchange equipment. However, the fluid may carry impurities and is likely to accumulate on the surface or near the baffle 5. After the vibration is transmitted to the baffle 5, it can loosen the impurities on the surface of the baffle 5, prevent the formation of a pile-up layer of impurities on the baffle 5, reduce the problem of poor fluid flow caused by the accumulation of impurities, ensure that the fluid can flow smoothly along the designed path, and improve the heat exchange effect. During long-term operation, components such as the scraping ring 54 and the baffle 5 may become stuck or move smoothly due to reasons such as impurity accumulation and component wear. The vibration can cause these components to generate small vibrations, prevent the components from sticking or getting stuck due to long-term contact, ensure the normal movement of each component, improve the operating stability of the equipment, and reduce equipment failures and downtime caused by component jams.

[0039] Embodiment 2: Combining Figure 2 、 Figure 3 As shown in, on the basis of Embodiment 1, a liquid inlet pipe 11 is connected and arranged on one side of the top of the housing 1, a liquid discharge pipe 12 is connected and arranged on the other side of the bottom of the housing 1, sealing discs 13 are fixedly connected to both ends of the housing 1, and the movable rod 51 is fixedly installed on the sealing disc 13, and the heat exchange tube 4 is fixedly installed on the sealing disc 13. Both ends of the heat exchange tube 4 are connected and arranged with the first tube sheet 2 and the second tube sheet 3 respectively;

[0040] A fluid inlet 21 is connected and arranged on the top of the first tube sheet 2, a fluid outlet 22 is connected and arranged on the bottom of the first tube sheet 2. A partition plate 23 is fixedly connected to the inner cavity of the first tube sheet 2. The partition plate 23 divides the first tube sheet 2 into upper and lower parts. When heat exchange is required, the cold source or heat source medium can pass through the heat exchange tube 4 in the upper half of the partition plate 23 through the fluid inlet 21. At this time, the material to be heat-exchanged can enter through the liquid inlet pipe 11. When the material contacts the heat exchange medium in the heat exchange tube 4 for heat exchange, heat exchange treatment can be performed;

[0041] A baffle plate 31 is fixedly connected to the inner cavity of the second tube box 3. The baffle plate 31 divides the inner cavity of the second tube box 3 into two parts, the left side is the control area 33, and the right side is the liquid area 32. The cold source or heat source medium enters the liquid area 32 through the heat exchange tubes 4 in the upper half, and then is discharged through the heat exchange tubes 4 in the lower half and the fluid outlet 22.

[0042] Working principle of the horizontal shell and tube heat exchanger: By starting the driving motor 59 to drive the rotating rod 510 to rotate synchronously, the rotating rod 510 drives the disc 511 and the convex rod 512 to rotate synchronously, so that the convex rod 512 slides in the chute 515, and then drives the connecting frame 513 and the cross bar 514 to reciprocate through the convex rod 512, so that the cross bar 514 drives the movable rod 51 to reciprocate, and the movable rod 51 drives the baffle 5, the cross 52, the connecting rod 53, and the scraping ring 54 to move synchronously, so that the left and right moving scraping ring 54 can scrape the impurities on the outer wall of the heat exchange tube 4. The scraping ring 54 can move left and right with the movable rod 51 to scrape the impurities on the outer wall of the heat exchange tube 4;

[0043] When the driving motor 59 drives the rotating rod 510 to rotate, the rotating rod 510 can drive the positioning rod 516 to rotate synchronously through the synchronous pulley transmission member 517, so that the positioning rod 516 drives the cam 518 to rotate synchronously. When the cam 518 rotates, it cooperates with the elastic force of the second damping spring 521 to enable the sliding plate 520 and the knocking rod 522 to reciprocate, so that the two knocking rods 522 sequentially perform reciprocating knocking treatment on the upper and lower ends of the movable rod 51, so that the movable rod 51 transmits the vibration to the baffle 5;

[0044] When the baffle 5 and the cross 52 reciprocate, they can drive the mounting plate 55 and the knocking hammer 56 to reciprocate. When the end of the knocking hammer 56 moves from the movable groove 524 to the trapezoidal block 525, the knocking hammer 56 moves outward under the action of the trapezoidal block 525 and compresses the first damping spring 57. When the end of the knocking hammer 56 moves from the trapezoidal block 525 to the movable groove 524, under the elastic force of the first damping spring 57, it pushes the end of the knocking hammer 56 to rotate and knock towards the cross 52 side, so that the cross 52 can transmit the vibration to the scraping ring 54 and the baffle 5. The scraping ring 54 is used to clean the impurities on the outer wall of the heat exchange tube 4. After the vibration is transmitted to the scraping ring, it can make the scraping ring 54 generate a small vibration during the sliding cleaning process. This vibration can enhance the impact force of the scraping ring 54 on the impurities on the outer wall of the heat exchange tube 4, making some stubborn impurities easier to separate from the heat exchange tube 4.

[0045] Although embodiments of the present invention have been shown and described, those of ordinary skill in the art will appreciate that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A horizontal shell-and-tube heat exchanger, comprising a housing (1), characterized in that: A first pipe box (2) and a second pipe box (3) are respectively fixedly connected to both sides of the shell (1); a plurality of baffles (5) are provided in the inner cavity of the shell (1); a plurality of heat exchange tubes (4) are provided on the baffles (5); and a control component installed in the second pipe box (3) is provided on one side of the baffles (5); The control assembly comprises a movable rod (51) fixedly mounted at the axis center of the inner cavity of the shell (1), and the baffle (5) is fixedly mounted on the movable rod (51), a slide groove is provided on the movable rod (51), and a cross (52) fixedly mounted on both sides of the baffle (5) is slidably connected to the slide groove, and the cross (52) is slidably mounted on the movable rod (51), and the end of the cross (52) is fixedly connected to a connecting rod (53), and a scraper ring (54) for slidingly cleaning the outer wall of the heat exchange tube (4) is fixedly connected through the connecting rod (53).

2. The horizontal shell-and-tube heat exchanger according to claim 1, wherein: The two ends of the surface of the cross (52) are fixedly connected to mounting plates (55), the inner end of the mounting plate (55) is movably connected to a knock hammer (56), and a first damping spring (57) is provided between the knock hammer (56) and the mounting plate (55).

3. The horizontal shell-and-tube heat exchanger according to claim 2, characterized in that: The control assembly also includes a fixed frame (58) fixedly mounted in the inner cavity of the second pipe box (3), a driving motor (59) fixedly mounted on the fixed frame (58), a rotating rod (510) fixedly connected to the output end of the driving motor (59), a disc (511) fixedly connected to the end of the rotating rod (510), a convex rod (512) fixedly connected to a position of the disc (511) offset from the center of the circle, and cross rods (514) slidably connected to both sides of the fixed frame (58), one end of one of the cross rods (514) sealingly slides through the movable rod (51), and the baffle (5) and the cross (52) are fixedly mounted on the cross rods (514), and the inner ends of the two cross rods (514) are fixedly connected to a connecting frame (513), a sliding groove (515) is provided on the surface of the connecting frame (513), and the convex rod (512) is slidably mounted in the sliding groove (515).

4. The horizontal shell-and-tube heat exchanger according to claim 3, wherein: A positioning rod (516) is rotatably connected to one side of the fixed frame (58); one end of the positioning rod (516) is transmission-connected to the rotating rod (510) via a synchronous belt pulley transmission member (517); the other end of the positioning rod (516) is fixedly connected to a cam (518); fixed rods (519) fixedly mounted on the fixed frame (58) are provided on both sides of the positioning rod (516); sliding plates (520) are slidably connected to both sides of the fixed rod (519); a knocking rod (522) for knocking the movable rod (51) is provided at the end of the sliding plate (520); and a second damping spring (521) sleeved on the fixed rod (519) is provided on the outer side of the sliding plate (520).

5. The horizontal shell-and-tube heat exchanger according to claim 4, characterized in that: On both sides of the sliding groove, there are rectangular plates (523) fixedly installed on the movable rod (51), and the two rectangular plates (523) are located on both sides of the cross (52). A row of movable grooves (524) are formed on the surface of the rectangular plate (523), and a row of trapezoidal blocks (525) are fixedly connected to the outer wall of the rectangular plate (523). The movable grooves (524) and the trapezoidal blocks (525) are arranged in a staggered manner, and the end of the percussion hammer (56) is located at positions corresponding to the movable grooves (524) and the trapezoidal blocks (525).

6. A horizontal shell and tube heat exchanger according to claim 5, characterized in that: On one side of the top of the housing (1), a liquid inlet pipe (11) is communicated and arranged. On the other side of the bottom of the housing (1), a liquid discharge pipe (12) is communicated and arranged. Sealing disks (13) are fixedly connected to both ends of the housing (1), and the movable rod (51) is fixedly installed on the sealing disk (13). The heat exchange tube (4) is fixedly installed on the sealing disk (13), and both ends of the heat exchange tube (4) are communicated and arranged with the first tube sheet (2) and the second tube sheet (3) respectively.

7. The horizontal shell-and-tube heat exchanger according to claim 6, characterized in that: A fluid inlet (21) is communicated and arranged at the top of the first tube sheet (2), and a fluid outlet (22) is communicated and arranged at the bottom of the first tube sheet (2). A partition plate (23) is fixedly connected to the inner cavity of the first tube sheet (2), and the partition plate (23) divides the first tube sheet (2) into upper and lower two parts.

8. A horizontal shell-and-tube heat exchanger according to claim 7, characterized in that: A baffle (31) is fixedly connected to the inner cavity of the second tube sheet (3), and the baffle (31) divides the inner cavity of the second tube sheet (3) into left and right two parts. The left side is the control area (33), and the right side is the liquid area (32).

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