Heat exchanger with anti-blocking function

Abstract

The invention provides a heat exchanger with an anti-blocking function, which comprises a fixed clamping plate and a movable clamping plate, and a plurality of plate sheets are arranged between the fixed clamping plate and the movable clamping plate. Alternate use of the arc-shaped filter screens is achieved through the rotating design of the second closed barrel, when the filtering effect of a certain filter screen is affected by impurity accumulation, other unblocked filter screens can work in time, it is guaranteed that liquid is continuously and smoothly filtered, the situation that the heat exchange process is interrupted due to blockage of a single filter screen is avoided, and efficient operation of equipment is maintained; the arc-shaped filter screens are backwashed through the spray heads, the four filter screens can be comprehensively cleaned in sequence in cooperation with rotation of the second closed barrel, when deep cleaning is needed, the output shaft of the servo motor rotates clockwise to drive the spray heads to move in a reciprocating mode, more thorough washing is achieved, impurities attached to the filter screens are effectively removed, and the service life of the filter screens is prolonged. The service life of the filter screen is prolonged and the equipment consumable replacement cost is reduced.

Description

Technical Field

[0001] The present invention belongs to the technical field of heat exchangers, and more specifically, particularly relates to a heat exchanger with an anti-blocking function. Background Art

[0002] Plate heat exchangers, with advantages such as high heat transfer efficiency, compact structure, and small floor area, are widely used in industries such as chemical engineering, food and beverage, heating, ventilation, air conditioning, and refrigeration. It forms numerous narrow and tortuous channels by stacking and assembling a large number of corrugated metal plates, enabling hot and cold fluids to flow reversely or staggeredly on both sides of the plates to efficiently complete heat transfer.

[0003] However, there are still some deficiencies in the current plate heat exchangers during actual use: 1. Traditional heat exchangers mostly use fixed filters for preliminary filtration. After long-term use, impurities adhere, resulting in a sharp decline in filtration efficiency, which not only affects the fluid flow rate but also indirectly reduces the heat exchange efficiency and increases energy consumption.

[0004] 2. It is difficult to clean and maintain the filters in the pipelines of traditional heat exchangers, which requires manual shutdown and disassembly, consuming a large amount of time and labor costs.

[0005] 3. Some heat exchangers with automatic cleaning functions only perform simple flushing on the surface of the filters, unable to effectively clean severely blocked filters, and it is also difficult to achieve the alternate use of filters. Residual impurities are likely to cause secondary blockage, affecting the stable operation of the heat exchanger. Therefore, in view of the existing structure and deficiencies, research and improvement are carried out to provide a heat exchanger with an anti-blocking function. Summary of the Invention

[0006] To solve the above technical problems, the present invention provides a heat exchanger with an anti-blocking function, which is achieved by the following specific technical means: A heat exchanger with a clogging prevention function, comprising a fixed clamping plate and a movable clamping plate. A number of plates are arranged between the fixed clamping plate and the movable clamping plate. A screw rod is installed between the fixed clamping plate and the movable clamping plate, and a nut is sleeved on the screw rod. Guide columns are fixedly installed on both the upper and lower sides of the end of the fixed clamping plate, and the two guide columns respectively pass through the upper and lower ends of the screw rod movably. A hot water inlet pipe, a cold water inlet pipe, a hot water outlet pipe and a cold water outlet pipe are installed on the fixed clamping plate. A support plate is fixedly installed at the outer end of the fixed clamping plate. A closed cylinder one is installed at the outer end of the fixed clamping plate. A closed cylinder two is rotatably installed in the closed cylinder one. Four arc-shaped through openings are equidistantly arranged on the circumferential surface of the closed cylinder two. An arc-shaped filter screen is embedded in each arc-shaped through opening. A connecting cover is attached to the bottom side of the inner cavity of the closed cylinder two. A liquid supply pipe is fixedly installed on the connecting cover. The liquid supply pipe passes through the middle of the closed cylinder two movably and fixedly passes through the middle of the closed cylinder one. A liquid inlet pipe is fixedly installed at the bottom end of the closed cylinder one. The upper port of the liquid inlet pipe is aligned with the lower port of the liquid supply pipe. A conveying pipe is installed on the liquid inlet pipe. An electromagnetic valve is arranged on the conveying pipe. A protective cover is slidably installed at the upper end of the closed cylinder one. A cleaning port is opened on the upper surface of the closed cylinder one. The protective cover completely covers the cleaning port. A pipe group is fixedly passed through the protective cover. A number of spray heads are installed at the bottom end of the pipe group for backwashing the arc-shaped filter screen. A connecting hose is installed between the pipe group and the conveying pipe.

[0007] Further, raised rings are fixedly installed at both ends of the closed cylinder two, and annular grooves are opened on both inner side walls of the closed cylinder one. Each raised ring is respectively arranged in the annular groove for limiting the closed cylinder two.

[0008] Further, two blocking strips are fixedly installed on the upper inner side wall of the closed cylinder one. There is a gap between the two blocking strips, and the bottom surfaces of the two blocking strips are attached to the outer surface of the closed cylinder two.

[0009] Further, a collection box is arranged in the closed cylinder two. The collection box is fixedly installed at the upper end of the liquid supply pipe. A slag discharge pipe is fixedly installed at the bottom end of the collection box. The slag discharge pipe passes through the middle of the closed cylinder two movably and fixedly passes through the middle of the closed cylinder one.

[0010] Further, limiting chutes are opened on both sides of the upper surface of the closed cylinder one. The two limiting chutes are respectively located on both sides of the cleaning port. Sliders are fixedly installed on both sides of the bottom end of the protective cover. The two sliders are respectively slidably installed in the limiting chutes for limiting the movement of the protective cover.

[0011] Furthermore, a gear ring is fixedly installed in the middle of the second closed cylinder body. A driving gear is rotatably installed on the first closed cylinder body. The gear ring meshes with the driving gear. A servo motor is fixedly installed at the outer end of the first closed cylinder body, and a first rotating shaft is arranged above the servo motor.

[0012] Furthermore, synchronous wheels are fixedly installed on both the output shaft of the servo motor and the first rotating shaft. A synchronous belt is sleeved on the two synchronous wheels. The first rotating shaft is rotatably installed on the first closed cylinder body, and a second rotating shaft is rotatably installed on the first closed cylinder body.

[0013] Furthermore, bevel gears are fixedly installed on both the second rotating shaft and the first rotating shaft. The two bevel gears mesh with each other. An eccentric wheel is fixedly installed on the second rotating shaft, and a contact plate is fixedly installed on the second rotating shaft. The surface of the eccentric wheel fits with the surface of the contact plate.

[0014] Furthermore, an extension plate is fixedly installed at the upper end of the protective cover. A fixing plate is fixedly installed at the upper end of the first closed cylinder body. Two round rods are fixedly installed on the fixing plate. Each round rod movably penetrates through the extension plate. A first spring is movably sleeved on each round rod. A round block is fixedly installed at the end of each round rod. The extension plate is fixedly connected to the two round blocks through the two first springs. A connecting shaft is fixedly installed in the middle of the driving gear. The connecting shaft is rotatably installed on the first closed cylinder body. A rotating block is fixedly installed on the connecting shaft. A sleeve is sleeved outside the rotating block. The sleeve is fixedly installed on the first closed cylinder body. An annular groove is formed in the inner wall of the sleeve. The rotating block is located at the annular groove. Anti-slip lines are formed on the surface of the rotating block. Connecting plates are fixedly installed at both ends of the first closed cylinder body. Screws are screwed into the two connecting plates. The two connecting plates are fixedly connected to the support plate through the screws.

[0015] Furthermore, a one-way transmission component is arranged between the connecting shaft and the output shaft of the servo motor. The one-way transmission component includes a rotating cover and a turntable. The turntable is rotatably installed in the rotating cover. The output shaft of the servo motor is fixedly connected to the middle of the turntable. The connecting shaft is fixedly connected to the middle of the rotating cover. A plurality of first bumps are fixedly installed at equal intervals on the outer circumference of the turntable. A plurality of second bumps are inserted into the inner wall of the rotating cover at equal intervals in the circumferential direction. The surfaces of the opposite ends of each second bump and each first bump are designed as inclined surfaces. A limiting rod is fixedly installed on each second bump. A plurality of connecting pieces are fixedly installed at equal intervals on the outer end of the rotating cover in the circumferential direction. Each limiting rod movably penetrates through the connecting piece respectively. A second spring is movably sleeved on each limiting rod. Each second bump is fixedly connected to the connecting piece through the second spring.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. By setting an arc filter at the liquid inlet end, impurities are intercepted in the liquid entering the heat exchanger, effectively preventing the plate from being blocked due to impurity accumulation, ensuring the stable operation of the heat exchange process, reducing the frequency of shutdown maintenance due to blockage, and improving the continuous working time and production efficiency of the equipment. The rotating design of the closed cylinder 2 realizes the alternating use of the arc filter. When a filter is affected by the accumulation of impurities and the filtering effect, other unblocked filters can take over in time to ensure continuous and smooth filtration of the liquid, avoid interruption of the heat exchange process due to blockage of a single filter, and maintain efficient operation of the equipment.

[0017] 2. Combined with the gear transmission ratio design and mechanical limit structure, the closed cylinder body 2 can be accurately controlled to rotate at 90 degrees each time. The encoder installed on the connecting shaft can accurately detect the rotation angle of the closed cylinder body 2 and record the number of rotations, which is convenient for mastering the use of the arc filter, providing data support for equipment maintenance and fault warning, and enhancing the reliability and stability of equipment operation.

[0018] 3. The arc filter can be backwashed through the nozzle, and the four filters can be fully cleaned in turn by the rotation of the closed cylinder. When deep cleaning is required, the clockwise rotation of the servo motor output shaft can drive the nozzle to move back and forth to achieve more thorough flushing, effectively remove impurities attached to the filter, extend the service life of the filter, and reduce the cost of replacing equipment consumables.

[0019] 4. Closed cylinder 2. The closed space formed by the blocking strip and the protective cover allows the liquid and impurities to only flow into the collection box and be discharged through the slag discharge pipe during the backwashing process, ensuring a clean and orderly backwashing process, preventing impurities from remaining inside the equipment and causing secondary blockage, and further improving the anti-blocking performance of the equipment.

[0020] 5. The cooperation between the annular groove on the inner wall of the closed cylinder 1 and the raised rings at both ends of the closed cylinder 2 can accurately limit the rotation of the closed cylinder 2, restrict its lateral and vertical displacement, and ensure stable rotation. At the same time, the design of the slag discharge pipe and the liquid supply pipe running through the middle part of the closed cylinder 2 does not affect its rotation, thereby ensuring the coordinated operation of all parts of the equipment and improving the overall operation stability of the equipment.

[0021] 6. When the servo motor output shaft rotates clockwise, it will not drive the closed cylinder body 2 to rotate, but only drive the nozzle to move back and forth to achieve deep cleaning. When it rotates counterclockwise, it drives the closed cylinder body 2 to rotate to achieve alternating arc-shaped filter screens. The two functions are independent of each other, avoiding interference between the movement of various components during the cleaning process, ensuring that the equipment operates stably according to the expected functions. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the whole heat exchanger with anti-clogging function of the present invention.

[0023] Figure 2It is a schematic diagram of the guide post of the present invention.

[0024] Figure 3 It is a schematic diagram of the first closed cylinder of the present invention.

[0025] Figure 4 It is a schematic diagram of the protective cover of the present invention.

[0026] Figure 5 It is a schematic diagram of the connecting plate of the present invention.

[0027] Figure 6 It is a schematic diagram of the first closed cylinder of the present invention cut open.

[0028] Figure 7 It is a schematic diagram of the second closed cylinder of the present invention.

[0029] Figure 8 It is a schematic diagram of the second closed cylinder of the present invention cut open.

[0030] Figure 9 It is a schematic diagram of the collection box of the present invention.

[0031] Figure 10 It is a schematic diagram of the cleaning port of the present invention.

[0032] Figure 11 It is a schematic diagram of the arc-shaped through port of the present invention.

[0033] Figure 12 It is a schematic diagram of the pipe group of the present invention.

[0034] Figure 13 It is a schematic diagram of the eccentric wheel of the present invention.

[0035] Figure 14 It is a schematic diagram of the sleeve cut open of the present invention.

[0036] Figure 15 It is a schematic diagram of the one-way transmission component of the present invention.

[0037] In the figure, the corresponding relationship between the component names and the drawing numbers is: 1. Fixed splint; 11. Movable splint; 12. Plate piece; 13. Screw rod; 14. Guide post; 15. Support plate; 2. First closed cylinder; 21. Connection cover; 22. Liquid supply pipe; 23. Liquid inlet pipe; 24. Delivery pipe; 25. Blocking strip; 26. Annular groove; 27. Cleaning port; 28. Limit sliding groove; 29. Connection plate; 3. Second closed cylinder; 31. Arc-shaped through port; 32. Arc-shaped filter screen; 33. Protruding ring; 34. Tooth ring; 4. Collection box; 41. Slag discharge pipe; 5. Protective cover; 51. Pipe group; 52. Sprayer; 53. Connection hose; 54. Slide block; 55. Extension plate; 56. Fixed plate; 57. Round rod; 58. Round block; 59. First spring; 6. Servo motor; 61. Synchronous pulley; 62. First rotating shaft; 63. Synchronous belt; 7. Second rotating shaft; 71. Eccentric wheel; 72. Bevel gear; 73. Contact plate; 8. One-way transmission component; 81. Rotating cover; 82. Turntable; 83. First convex block; 84. Second convex block; 85. Connector; 86. Limit rod; 87. Second spring; 9. Driving gear; 91. Connection shaft; 92. Sleeve cover; 93. Rotating block. Detailed implementation manners

[0038] The following further describes in detail the implementation manners of the present invention in conjunction with the accompanying drawings and embodiments. The following embodiments are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0039] In the description of the present invention, unless otherwise specified, "a plurality of" means two or more; the orientation or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation on the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0040] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. Embodiment

[0041] As shown in the attached Figure 1 to the attached Figure 15 figures: The present invention provides a heat exchanger with an anti-blocking function, which includes a fixed clamping plate 1 and a movable clamping plate 11. A number of plates 12 are arranged between the fixed clamping plate 1 and the movable clamping plate 11. A screw 13 is installed between the fixed clamping plate 1 and the movable clamping plate 11, and a nut is sleeved on the screw 13. Guide columns 14 are fixedly installed on both the upper and lower sides of the end of the fixed clamping plate 1, and the two guide columns 14 respectively pass through the upper and lower ends of the screw 13 movably. A hot water inlet pipe, a cold water inlet pipe, a hot water outlet pipe and a cold water outlet pipe are installed on the fixed clamping plate 1. A support plate 15 is fixedly installed at the outer end of the fixed clamping plate 1. A first closed cylinder 2 is installed at the outer end of the fixed clamping plate 1. A second closed cylinder 3 is rotatably installed in the first closed cylinder 2. Four arc-shaped through openings 31 are equidistantly arranged on the circumferential surface of the second closed cylinder 3. An arc-shaped filter screen 32 is embedded in each arc-shaped through opening 31. A connecting cover 21 is attached to the bottom side of the inner cavity of the second closed cylinder 3. A liquid supply pipe 22 is fixedly installed on the connecting cover 21. The liquid supply pipe 22 passes through the middle of the second closed cylinder 3 movably and fixedly passes through the middle of the first closed cylinder 2. A liquid inlet pipe 23 is fixedly installed at the bottom end of the first closed cylinder 2. The upper port of the liquid inlet pipe 23 is aligned with the lower port of the liquid supply pipe 22. A conveying pipe 24 is installed on the liquid inlet pipe 23. An electromagnetic valve is arranged on the conveying pipe 24. A protective cover 5 is slidably installed at the upper end of the first closed cylinder 2. A cleaning port 27 is opened on the upper surface of the first closed cylinder 2. The protective cover 5 completely covers the cleaning port 27. A pipe group 51 is fixedly passed through the protective cover 5. A number of spray heads 52 are installed at the bottom end of the pipe group 51 for backwashing the arc-shaped filter screen 32. A connecting hose 53 is installed between the pipe group 51 and the conveying pipe 24. The number of spray heads 52 is used for backwashing the arc-shaped filter screen 32. The backwashing method has a better effect and can effectively remove impurities in the pores of the arc-shaped filter screen 32; Raised rings 33 are fixedly installed at both ends of the second closed cylinder 3. Annular grooves 26 are opened on both inner side walls of the first closed cylinder 2. Each raised ring 33 is respectively arranged in the annular groove 26 for limiting the second closed cylinder 3; Two blocking strips 25 are fixedly installed on the upper inner side wall of the first closed cylinder 2. There is a gap between the two blocking strips 25. The bottom surfaces of the two blocking strips 25 are attached to the outer surface of the second closed cylinder 3. A sealed space is formed between the two blocking strips 25 and the protective cover 5. This sealed structure effectively prevents the liquid from flowing outwards during the backwashing process; A collection box 4 is arranged in the second closed cylinder 3. The collection box 4 is fixedly installed at the upper end of the liquid supply pipe 22. A slag discharge pipe 41 is fixedly installed at the bottom end of the collection box 4. The slag discharge pipe 41 passes through the middle of the second closed cylinder 3 movably and fixedly passes through the middle of the first closed cylinder 2. The movable through design will not cause any obstruction to the rotation of the second closed cylinder 3, ensuring the coordinated operation of each component of the equipment; On both sides of the upper surface of the first closed cylinder body 2, limiting sliding grooves 28 are provided. The two limiting sliding grooves 28 are respectively located on both sides of the cleaning port 27. On both sides of the bottom end of the protective cover 5, sliding blocks 54 are fixedly installed. The two sliding blocks 54 are respectively slidably installed in the limiting sliding grooves 28 to limit the movement of the protective cover 5, ensure the stable movement of the protective cover 5, and ensure that the protective cover 5 does not break away from the first closed cylinder body 2; A toothed ring 34 is fixedly installed in the middle of the second closed cylinder body 3. A driving gear 9 is rotatably installed on the first closed cylinder body 2. The toothed ring 34 meshes with the driving gear 9. A servo motor 6 is fixedly installed at the outer end of the first closed cylinder body 2. Above the servo motor 6, there is a first rotating shaft 62. The servo motor 6 serves as a power source to drive the second closed cylinder body 3 to rotate, realizing the alternating use of the arc-shaped filter screen 32; Synchronous wheels 61 are fixedly installed on the output shaft of the servo motor 6 and the first rotating shaft 62. A synchronous belt 63 is sleeved on the two synchronous wheels 61. The first rotating shaft 62 is rotatably installed on the first closed cylinder body 2. A second rotating shaft 7 is rotatably installed on the first closed cylinder body 2; Conical gears 72 are fixedly installed on the second rotating shaft 7 and the first rotating shaft 62. The two conical gears 72 mesh with each other. An eccentric wheel 71 is fixedly installed on the second rotating shaft 7. A contact plate 73 is fixedly installed on the second rotating shaft 7. The surface of the eccentric wheel 71 is attached to the surface of the contact plate 73 to drive the reciprocating movement of the protective cover 5 and the spray head 52, thereby realizing the comprehensive cleaning of the arc-shaped filter screen 32 and improving the cleaning effect; An extension plate 55 is fixedly installed at the upper end of the protective cover 5. A fixing plate 56 is fixedly installed at the upper end of the first closed cylinder body 2. Two round rods 57 are fixedly installed on the fixing plate 56. Each round rod 57 movably penetrates through the extension plate 55. A first spring 59 is movably sleeved on each round rod 57. A round block 58 is fixedly installed at the end of each round rod 57. The extension plate 55 is fixedly connected to the two round blocks 58 through the two first springs 59. A connecting shaft 91 is fixedly installed in the middle of the driving gear 9. The connecting shaft 91 is rotatably installed on the first closed cylinder body 2. A rotating block 93 is fixedly installed on the connecting shaft 91. A sleeve 92 is sleeved outside the rotating block 93. The sleeve 92 is fixedly installed on the first closed cylinder body 2. An annular groove is provided on the inner wall of the sleeve 92. The rotating block 93 is located at the annular groove. Anti-slip lines are provided on the surface of the rotating block 93 to increase the friction force when the connecting shaft 91 rotates, ensuring the stability and accuracy of the operation of each component of the equipment during the cleaning of the arc-shaped filter screen 32; Connecting plates 29 are fixedly installed at both ends of the first closed cylinder body 2. Screws are screwed into the two connecting plates 29. The two connecting plates 29 are fixedly connected to the support plate 15 through the screws, providing installation support for the first closed cylinder body 2 and ensuring the stable installation of the first closed cylinder body 2; A one-way transmission component 8 is provided between the connecting shaft 91 and the output shaft of the servo motor 6. The one-way transmission component 8 includes a rotating cover 81 and a turntable 82. The turntable 82 is rotatably installed in the rotating cover 81. The output shaft of the servo motor 6 is fixedly connected to the middle of the turntable 82, and the connecting shaft 91 is fixedly connected to the middle of the rotating cover 81. A number of first bumps 83 are fixedly installed at equal intervals on the outer circumference of the turntable 82. A number of second bumps 84 are inserted into the inner wall circumference of the rotating cover 81 at equal intervals. The surfaces of the opposite ends of each second bump 84 and each first bump 83 are designed as inclined surfaces. A limiting rod 86 is fixedly installed on each second bump 84. A number of connecting pieces 85 are fixedly installed at equal intervals on the outer circumferential end of the rotating cover 81. Each limiting rod 86 respectively passes through the connecting piece 85 movably. A second spring 87 is movably sleeved on each limiting rod 86. Each second bump 84 is fixedly connected to the connecting piece 85 through the second spring 87. The one-way transmission component 8 realizes power transmission, so that when the output shaft of the servo motor 6 rotates clockwise, it will not drive the closed cylinder body two 3 to rotate, but only drives the nozzle 52 to reciprocate to realize deep cleaning. When rotating counterclockwise, it drives the closed cylinder body two 3 to rotate to realize the alternation of the filter screens. The two functions are independent of each other, avoiding the movement interference of each component during the cleaning process and ensuring the stable operation of the equipment according to the expected functions.

[0042] The working principle of this embodiment: The first step: In the equipment installation link, according to the actual use requirements, the liquid inlet pipe 23 on the closed cylinder body one 2 is fixedly connected to the hot water inlet pipe or the cold water inlet pipe. It is also possible to install two closed cylinder bodies one 2, which are respectively connected to the hot water inlet pipe and the cold water inlet pipe. After installation, the liquid flows in from the liquid supply pipe 22. At this time, the arc-shaped through hole 31 on the closed cylinder body two 3 is facing the liquid supply pipe 22, and the liquid enters the arc-shaped through hole 31. The arc-shaped filter screen 32 intercepts and filters the impurities in the liquid. The filtered clean liquid is transported to the plate fins 12 through the liquid inlet pipe 23. Between the plate fins 12, the cold water and the hot water perform efficient heat exchange. Through this filtering step, it effectively prevents the blockage of the inside of the plate fins 12 due to the accumulation of impurities and ensures the stable operation of the heat exchange process; Step 2: After the arc-shaped filter screen 32 has been used for a long time, the filtering effect may be affected by the accumulation of impurities. At this time, the servo motor 6 is started, and its output shaft rotates counterclockwise. Power transmission is achieved through the one-way transmission assembly 8. The output shaft of the servo motor 6 is fixedly connected to the middle of the turntable 82. The counterclockwise rotation of the output shaft drives the turntable 82 to rotate counterclockwise, and the first convex block 83 on the outer circumference of the turntable 82 rotates counterclockwise accordingly. Since the surfaces of the opposite ends of the first convex block 83 and the second convex block 84 are both designed as inclined surfaces, and the second convex block 84 is connected to the connecting member 85 through the second spring 87, the first convex block 83 pushes the second convex block 84, thereby driving the rotating cover 81 to rotate counterclockwise. The rotating cover 81 is fixedly connected to the connecting shaft 91, causing the connecting shaft 91 to rotate counterclockwise. The driving gear 9 on the connecting shaft 91 also rotates counterclockwise synchronously. The driving gear 9 meshes with the toothed ring 34, driving the toothed ring 34 to rotate. The toothed ring 34 is fixed on the closed cylinder body II 3, thereby driving the closed cylinder body II 3 to rotate. An encoder is installed on the connecting shaft 91 to detect the rotation angle of the closed cylinder body II 3 and record the number of rotations of the closed cylinder body II 3, facilitating the judgment of the usage duration and frequency of the arc-shaped filter screen 32, providing data support for equipment maintenance and fault warning, and improving the stability and reliability of the operation of the heat exchanger. The rotation angle of the closed cylinder body II 3 is controlled to be 90 degrees each time. Through this rotation, the arc-shaped filter screens 32 at different positions are successively rotated to the lower part of the liquid supply pipe 22, realizing the alternating use of the arc-shaped filter screens 32, ensuring that when one of the arc-shaped filter screens 32 is blocked by impurities, the other unblocked arc-shaped filter screens 32 can take over the work in time, ensuring that the liquid can continuously and smoothly pass through the filter and enter the heat exchanger, maintaining the normal operation of the heat exchanger; Step 3: When it is necessary to clean the arc-shaped filter screen 32, the solenoid valve on the delivery pipe 24 is opened, and a part of the liquid entering the liquid inlet pipe 23 will be diverted into the delivery pipe 24. The diverted liquid successively passes through the connecting hose 53 and the pipe group 51, and finally sprays out from the nozzle 52. At this time, the servo motor 6 is started to control the rotation of the closed cylinder body II 3. When a certain arc-shaped filter screen 32 rotates to the upper part of the closed cylinder body II 3, the liquid sprayed out from the nozzle 52 performs backwashing on it. Through the rotation of the closed cylinder body II 3, the four arc-shaped filter screens 32 can be comprehensively backwashed in sequence, effectively removing the impurities attached to the arc-shaped filter screen 32, ensuring that the arc-shaped filter screen 32 can continue to be put into use after cleaning, realizing repeated utilization, extending its service life, and ensuring the long-term stable operation of the heat exchanger; Fourth step: During the backwashing process, a sealed space is formed between the second closed cylinder 3, the two blocking strips 25 and the protective cover 5. This sealed structure effectively prevents the liquid from flowing outwards during the backwashing process, enabling the flushing liquid and impurities to only flow downwards into the collection box 4. The collection box 4 is fixedly installed at the upper end of the liquid supply pipe 22, and the collected liquid and impurities are finally discharged through the slag discharge pipe 41, thereby ensuring the cleanliness and orderliness of the entire backwashing process and avoiding secondary blockage caused by impurities remaining inside the equipment; Fifth step: To ensure the stability and accuracy of the rotation of the second closed cylinder 3, annular grooves 26 are provided on both sides of the inner wall of the first closed cylinder 2. Raised rings 33 are fixedly installed at both ends of the second closed cylinder 3, and the two raised rings 33 are respectively inserted into the annular grooves 26, which play an accurate limiting role in the rotation of the second closed cylinder 3. It not only restricts the displacement of the second closed cylinder 3 in the horizontal and vertical directions but also ensures that it will not shift or shake during the rotation process, guaranteeing the stable and reliable rotation of the second closed cylinder 3. At the same time, the slag discharge pipe 41 and the liquid supply pipe 22 pass through the middle of the second closed cylinder 3 movably, and the movable penetration design will not cause any obstruction to the rotation of the second closed cylinder 3, ensuring the coordinated operation of each component of the equipment; Sixth step: When it is necessary to further improve the cleaning effect of the arc-shaped filter screen 32, start the servo motor 6 to make its output shaft rotate clockwise. Due to the unique design of the one-way transmission component 8, when the output shaft of the servo motor 6 rotates clockwise, the turntable 82 rotates clockwise. The inclined surface design at the opposite ends of the first convex block 83 and the second convex block 84, as well as the second spring 87 between the second convex block 84 and the connecting member 85, cause the first convex block 83 to slide out of alignment with the second convex block 84 when rotating clockwise, unable to drive the rotating cover 81 to rotate clockwise, and thus not driving the driving gear 9 and the second closed cylinder 3 to rotate clockwise. When the output shaft of the servo motor 6 rotates, the rotating shaft 62 is driven to rotate through the synchronous pulley 61 and the synchronous belt 63. The bevel gear 72 on the rotating shaft 62 meshes with the bevel gear 72 on the rotating shaft 7, thereby driving the rotating shaft 7 to rotate. When the rotating shaft 7 rotates, the eccentric wheel 71 fixedly installed on it rotates accordingly. During the rotation process, the eccentric wheel 71 exerts a periodic force on the extension plate 55, causing the protective cover 5 to move on the two round rods 57. Under the reset action of the first spring 59, the protective cover 5 realizes reciprocating movement. The several spray nozzles 52 fixedly installed on the protective cover 5 also move reciprocally. The reciprocating spray nozzles 52 can perform a more comprehensive and thorough backwashing on the arc-shaped filter screen 32, greatly improving the cleaning effect. Therefore, when it is necessary to deeply clean the arc-shaped filter screen 32, starting the output shaft of the servo motor 6 to rotate clockwise can realize the reciprocating movement of the spray nozzles 52 without changing the position of the arc-shaped filter screen 32, effectively avoiding the situation of movement interference between components during the cleaning process and ensuring the rationality of the structural design; In the seventh step, two connecting plates 29 are fixedly installed on the first closed cylinder body 2, and a support plate 15 is fixedly installed on the fixed clamping plate 1. During installation, the connecting plate 29 is placed on the support plate 15 and fixed by screws to achieve the installation and support of the first closed cylinder body 2. The liquid inlet pipe 23 is fixedly connected to the pipeline on the fixed clamping plate 1 through a flange and bolts, and the liquid supply pipe 22 is fixedly connected to the infusion pipe through a flange and bolts. In the eighth step, in the design of the connecting shaft 91, the rotating block 93 fixedly installed thereon is located in the annular groove at the sleeve 92. The anti-slip lines formed on the surface of the rotating block 93 increase the friction force when the connecting shaft 91 rotates. Therefore, when the output shaft of the servo motor 6 rotates clockwise, since it is necessary to overcome the relatively large friction force between the connecting shaft 91 and the sleeve 92, as well as the friction force between the second closed cylinder body 3 and the first closed cylinder body 2, the power for the output shaft to rotate clockwise is not sufficient to drive the rotating cover 81 to rotate clockwise, further ensuring the stability and accuracy of the operation of each component of the equipment during the cleaning of the arc-shaped filter screen 32.

[0043] The embodiments of the present invention are given for purposes of illustration and description, and are not exhaustive or limit the invention to the disclosed form. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are chosen and described in order to better explain the principles of the invention and its practical application, and to enable those of ordinary skill in the art to understand the invention so as to design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A heat exchanger with an anti-clogging function, comprising a fixed splint (1) and a movable splint (11), wherein a plurality of plates (12) are arranged between the fixed splint (1) and the movable splint (11), a screw rod (13) is installed between the fixed splint (1) and the movable splint (11), and a nut is sleeved on the screw rod (13), and it is characterized in that: On the upper and lower sides of the end of the fixed splint (1), guide posts (14) are fixedly installed. The two guide posts (14) respectively pass through the upper and lower ends of the screw rod (13) movably. A hot water inlet pipe, a cold water inlet pipe, a hot water outlet pipe and a cold water outlet pipe are installed on the fixed splint (1). A support plate (15) is fixedly installed at the outer end of the fixed splint (1). Among them, a first closed cylinder (2) is installed at the outer end of the fixed splint (1). A second closed cylinder (3) is rotatably installed in the first closed cylinder (2). Four arc-shaped through openings (31) are equidistantly arranged on the circumferential surface of the second closed cylinder (3). An arc-shaped filter screen (32) is embedded in each arc-shaped through opening (31). A connection cover (21) is attached to the bottom side of the inner cavity of the second closed cylinder (3). A liquid supply pipe (22) is fixedly installed on the connection cover (21). The liquid supply pipe (22) passes through the middle of the second closed cylinder (3) movably and fixedly passes through the middle of the first closed cylinder (2). A liquid inlet pipe (23) is fixedly installed at the bottom end of the first closed cylinder (2). The upper port of the liquid inlet pipe (23) is aligned with the lower port of the liquid supply pipe (22). A delivery pipe (24) is installed on the liquid inlet pipe (23). An electromagnetic valve is arranged on the delivery pipe (24). Among them, a protective cover (5) is slidably installed at the upper end of the first closed cylinder (2). A cleaning port (27) is opened on the upper surface of the first closed cylinder (2). The protective cover (5) completely covers the cleaning port (27). A pipe group (51) is fixedly passed through the protective cover (5). A plurality of spray heads (52) are installed at the bottom end of the pipe group (51) for backwashing the arc-shaped filter screen (32). A connecting hose (53) is installed between the pipe group (51) and the delivery pipe (24).

2. The heat exchanger with a clogging prevention function according to claim 1, wherein: Raised rings (33) are fixedly installed at both ends of the second closed cylinder (3). Annular grooves (26) are opened on both inner walls of the first closed cylinder (2). Among them, each raised ring (33) is respectively arranged in the annular groove (26) for limiting the second closed cylinder (3).

3. The heat exchanger with a clogging prevention function according to claim 2, wherein: Two blocking strips (25) are fixedly installed on the upper inner wall of the first closed cylinder (2). There is a gap between the two blocking strips (25). Among them, the bottom surfaces of the two blocking strips (25) are attached to the outer surface of the second closed cylinder (3).

4. The heat exchanger with a clogging prevention function according to claim 3, wherein: A collection box (4) is arranged in the second closed cylinder (3). The collection box (4) is fixedly installed at the upper end of the liquid supply pipe (22). A slag discharge pipe (41) is fixedly installed at the bottom end of the collection box (4). Among them, the slag discharge pipe (41) passes through the middle of the second closed cylinder (3) movably and fixedly passes through the middle of the first closed cylinder (2).

5. The heat exchanger with a clogging prevention function according to claim 4, wherein: On both sides of the upper surface of the closed cylinder body one (2), limit sliding grooves (28) are provided. The two limit sliding grooves (28) are respectively located on both sides of the cleaning port (27). On both sides of the bottom end of the protective cover (5), sliding blocks (54) are fixedly installed. The two sliding blocks (54) are respectively slidably installed in the limit sliding grooves (28) to limit the movement of the protective cover (5).

6. The heat exchanger with a clogging prevention function according to claim 5, wherein: In the middle of the closed cylinder body two (3), a toothed ring (34) is fixedly installed. On the closed cylinder body one (2), a driving gear (9) is rotatably installed. The toothed ring (34) meshes with the driving gear (9). On the outer end of the closed cylinder body one (2), a servo motor (6) is fixedly installed. Above the servo motor (6), a rotating shaft one (62) is provided.

7. The heat exchanger with a clogging prevention function according to claim 6, characterized in that: On the output shaft of the servo motor (6) and the rotating shaft one (62), synchronous pulleys (61) are fixedly installed. A synchronous belt (63) is sleeved on the two synchronous pulleys (61); Among them, the rotating shaft one (62) is rotatably installed on the closed cylinder body one (2). On the closed cylinder body one (2), a rotating shaft two (7) is rotatably installed.

8. The heat exchanger with a clogging prevention function according to claim 7, characterized in that: On the rotating shaft two (7) and the rotating shaft one (62), bevel gears (72) are fixedly installed. The two bevel gears (72) mesh with each other. On the rotating shaft two (7), an eccentric wheel (71) is fixedly installed; Among them, on the rotating shaft two (7), a contact plate (73) is fixedly installed. The surface of the eccentric wheel (71) is attached to the surface of the contact plate (73).

9. The heat exchanger with a clogging prevention function according to claim 8, characterized in that: On the upper end of the protective cover (5), an extension plate (55) is fixedly installed. On the upper end of the closed cylinder body one (2), a fixing plate (56) is fixedly installed. On the fixing plate (56), two round rods (57) are fixedly installed. Each round rod (57) movably penetrates through the extension plate (55). On each round rod (57), a first spring (59) is movably sleeved. At the end of each round rod (57), a round block (58) is fixedly installed. The extension plate (55) is fixedly connected to the two round blocks (58) through the two first springs (59); In the middle of the driving gear (9), a connecting shaft (91) is fixedly installed. The connecting shaft (91) is rotatably installed on the closed cylinder body one (2). On the connecting shaft (91), a rotating block (93) is fixedly installed. A sleeve (92) is sleeved outside the rotating block (93). The sleeve (92) is fixedly installed on the closed cylinder body one (2). An annular groove is provided on the inner wall of the sleeve (92). The rotating block (93) is located at the annular groove. Anti-slip lines are provided on the surface of the rotating block (93). On both ends of the closed cylinder body one (2), connecting plates (29) are fixedly installed. Screws are screwed into the two connecting plates (29). The two connecting plates (29) are fixedly connected to the support plate (15) through the screws.

10. The heat exchanger with a clogging prevention function according to claim 9, characterized in that: A one-way transmission component (8) is provided between the connecting shaft (91) and the output shaft of the servo motor (6). The one-way transmission component (8) includes a rotating cover (81) and a turntable (82). The turntable (82) is rotatably installed in the rotating cover (81). The output shaft of the servo motor (6) is fixedly connected to the middle of the turntable (82). The connecting shaft (91) is fixedly connected to the middle of the rotating cover (81). A number of first bumps (83) are fixedly installed on the outer circumference of the turntable (82) at equal intervals. A number of second bumps (84) are inserted into the inner wall circumference of the rotating cover (81) at equal intervals. The surfaces of the opposite ends of each second bump (84) and each first bump (83) are designed as inclined surfaces. Among them, a limiting rod (86) is fixedly installed on each second bump (84). A number of connecting pieces (85) are fixedly installed on the outer circumferential end of the rotating cover (81) at equal intervals. Each limiting rod (86) respectively passes through the connecting piece (85) movably. A second spring (87) is movably sleeved on each limiting rod (86). Each second bump (84) is fixedly connected to the connecting piece (85) through the second spring (87).

Images