Self-cleaning plate type heat exchanger unit

Abstract

The invention discloses a self-cleaning plate type heat exchanger unit, which belongs to the technical field of heat exchangers and comprises a heat exchange plate, a base is arranged at the bottom end of the heat exchange plate, screws penetrate through two sides of the heat exchange plate, and the heat exchange plate can be clamped through the screws; according to the heat exchange plate cleaning device, the washing assembly is arranged, and through the design, in the heat exchange plate cleaning process, only the heat exchange plate needs to be moved to one side of the first vertical plate from one side, the heat exchange plate does not need to be detached, meanwhile, the heat exchange plate can be supported and limited through a screw rod and a base, and the heat exchange plate can be conveniently cleaned; and meanwhile, in the process that the heat exchange plates are moved to the other side one by one, the spray head frame can be driven to move through the electric push rod, and then the heat exchange plates are washed through the spray heads, so that the heat exchange plates are conveniently and rapidly cleaned. Therefore, the heat exchange plate does not need to be cleaned manually, and the automatic cleaning effect is achieved.

Description

Technical Field

[0001] This invention belongs to the field of heat exchanger technology, and particularly relates to a self-cleaning plate heat exchanger unit. Background Technology

[0002] Plate heat exchanger units are a type of heat exchange equipment mainly used in centralized heating, air conditioning, and domestic hot water applications. They achieve efficient heat exchange primarily through internal corrugated plates, which transfer the heat of hot water flowing on one side to cold water flowing on the other side. This process ensures that the two water flows do not come into contact during the exchange, thus reducing water pollution.

[0003] After prolonged use, plate heat exchangers accumulate impurities in the water flow, leaving a residue inside the heat exchanger. This residue can negatively impact heat exchange efficiency over time, necessitating cleaning. However, the cleaning process requires disassembling and separating the heat exchange plates individually, which can be cumbersome due to their dispersed arrangement. Summary of the Invention

[0004] The purpose of this invention is to provide a self-cleaning plate heat exchanger unit to solve the problem that the plates are too dispersed during cleaning, which is not conducive to subsequent assembly.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a self-cleaning plate heat exchanger unit, including a heat exchange plate, a base at the bottom of the heat exchange plate, and screws penetrating both sides of the heat exchange plate, which can clamp the heat exchange plate through the screws, and further comprising: The first upright plate is disposed at one end of the base and is fixed to the screw by bolts; The second vertical plate is installed at the other end of the base and is fixedly connected to the screw. The second vertical plate has a through hole corresponding to the water inlet of the heat exchange plate. The moving component includes a walking frame disposed at the top of the first upright plate and the second upright plate, and the outer wall of the walking frame is provided with a moving seat; The rinsing assembly includes a nozzle frame disposed on the top of the heat exchange plate, and a water inlet pipe is provided at one end of the nozzle frame. A nozzle is installed on one side of the nozzle frame, and water is supplied to the nozzle through the water inlet pipe and sprayed out to rinse one side of the heat exchange plate.

[0006] As a further description of the above technical solution: It also includes: a support frame, which is disposed on the outside of the nozzle frame, and the nozzle frame is rotatably connected to the grooves opened on the inner side of the support frame through protrusions at both ends; The connecting rod is mounted on the top of the support frame, and a friction block is slidably mounted on the outer wall of the connecting rod. The connecting rod passes through a through hole opened in the movable seat, and the bottom end of the friction block is fixedly connected to the movable seat. The friction block can increase the friction force of the connecting rod when it moves.

[0007] As a further description of the above technical solution: It also includes: an extrusion block, which is mounted on the top surface of the support frame; A connecting frame is located on one side of the nozzle frame and is hinged to one side of the nozzle frame. The nozzle frame can be swung by moving the connecting frame up and down. An electric push rod is provided at the top of the connecting frame, and the telescopic end of the electric push rod passes through the movable seat and is fixedly connected to the connecting frame. The electric push rod is installed on the top surface of the movable seat and can drive the connecting frame to move.

[0008] As a further description of the above technical solution: The moving component further includes: teeth, which are linearly arranged at the bottom end of the walking frame; A roller cover is provided inside the roller cover, and the roller cover is installed inside the movable seat, and the roller rolls in a groove provided on the top surface of the walking frame.

[0009] As a further description of the above technical solution: It also includes: a gear, which is disposed inside the movable seat, and a rotating shaft is mounted on one side of the gear, and the rotating shaft is rotatably installed in the through hole provided in the movable seat, and the gear meshes with the teeth; A turntable is mounted on one end of a rotating shaft, which drives the gears to rotate.

[0010] As a further description of the above technical solution: It also includes: a round rod, which is installed on one side of the turntable, and the turntable can be rotated by moving the round rod with a lever; A spring pin is provided on one side of the gear, and a groove corresponding to the spring pin is provided on one side of the movable seat. The connection between the spring pin and the groove on one side of the movable seat can prevent the gear from rotating too much. A slot, located on the other side of the gear, is used to limit the movement of the gear.

[0011] As a further description of the above technical solution: It also includes: a limiting component, which includes a fixed frame disposed inside the movable seat, and the gear is located on one side of the fixed frame; A limiting frame, which is installed on one side of a fixed frame.

[0012] As a further description of the above technical solution: It also includes: a plug rod, which is slidably installed in the through hole of the fixing frame, and the plug rod corresponds to the slot on one side of the gear. By inserting the plug rod into the slot, the gear can be limited. The mounting plate is installed at one end of the insertion rod and is used to connect the insertion rod.

[0013] As a further description of the above technical solution: It also includes: a spring, which is disposed between the mounting plate and the fixing frame and is fixedly connected to both, and is in a stretched state. By pulling the mounting plate with the spring, the insertion rod can be driven into the slot. The slide rod is slidably installed in the through hole of the limiting frame, and one end of the slide rod is fixedly connected to the mounting plate.

[0014] As a further description of the above technical solution: It also includes a movable block, which is installed at one end of the slide rod and has a groove on its bottom surface. The movable block corresponds to the pressing block. By pressing the movable block with the pressing block, the slide rod and the insertion rod can be moved and the insertion rod can be pulled out of the slot.

[0015] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: 1. In this invention, by incorporating a flushing assembly, when the heat exchange plates need to be cleaned, the bolts securing the heat exchange plates can be loosened and moved to one end of the screw, thereby pushing the heat exchange plates one by one to one side of the first upright plate. Since the heat exchange plates are not separated from the screw and are supported by a base at the bottom, they stand upright on one side of the first upright plate. After moving a single heat exchange plate to one side of the first upright plate, the connecting frame can be moved downwards by an electric push rod. Simultaneously, the connecting frame pushes the nozzle frame, causing it to rotate. Due to the significant resistance between the friction block and the connecting rod, the connecting rod support frame does not move. When the nozzle frame rotates to a certain angle, it contacts the support frame, causing the nozzle frame and support frame to move downwards with the movement of the connecting frame. Water is injected into the nozzle through the water inlet pipe, and water is sprayed from the nozzle to flush the heat exchange plates on both sides. When the electric push rod moves the nozzle to the bottom, the connecting frame is moved upwards by the electric push rod. The device moves while the connecting rod and support frame remain stationary due to the friction block. Simultaneously, as the connecting frame rises, the nozzle frame swings in the opposite direction. When the nozzle frame contacts the support frame on the other side, the support frame rises along with the nozzle frame. This design allows for cleaning of the heat exchange plates by simply moving them from one side to the first vertical plate, without removing them. The screw and base support and limit the heat exchange plates, facilitating subsequent installation and reducing the difficulty of reinstallation after removal. Furthermore, as the heat exchange plates are moved one by one to the other, the electric push rod moves the nozzle frame, rinsing the plates with the nozzles. This eliminates the need for manual cleaning, achieving automatic cleaning. The nozzles also rinse the heat exchange plates at different angles during up-and-down movement, further ensuring thorough cleaning.

[0016] 2. In this invention, by incorporating a movable module, during the process of moving the heat exchange plate from one side to the other, the lever at the top of the heat exchange plate can push the round rod to swing, thereby driving the turntable to rotate. This, in turn, drives the gear to rotate via the rotating shaft, causing the gear to move on the tooth surface, which in turn moves the movable seat a certain distance. This ensures that as the heat exchange plate gradually moves from one side to the other, the nozzle remains approximately the same distance from both heat exchange plates, thus ensuring a good rinsing effect during spraying. During gear rotation, the spring pin moves with the gear's rotation. When the lever separates from the round rod, the spring pin is located at the edge of the groove inside the movable seat. Therefore, under the pressure of the spring pin on the edge, the spring pin slides into the groove, ensuring the tooth... The gear rotates at a certain angle, ensuring the movable seat can move a certain distance as the gear rotates. This design allows the heat exchanger to be moved to the other side during cleaning. A lever at the top of the heat exchanger drives a circular rod to swing, which in turn rotates the gear and moves the movable seat a certain distance. The movement of the movable seat then moves the electric push rod, ensuring the distance between the nozzle and both heat exchangers remains approximately the same. This guarantees effective rinsing and prevents the movement of the heat exchangers from affecting the rinsing effect. Furthermore, the connection between the spring pin and the inner groove of the movable seat ensures the gear can rotate at a certain angle, guaranteeing the movable seat's movement distance.

[0017] 3. In this invention, by providing a limiting component, during the process of the electric push rod driving the nozzle downward, the support frame moves downward, causing the squeezing block and the moving block to separate. This allows the mounting plate and the insert rod to move under the action of a spring, enabling the insert rod to be inserted into the slot. This prevents the gears from rotating during the nozzle's downward movement, which could cause the moving seat to move and affect the rinsing effect. When the electric push rod drives the nozzle to the top for reset, the support frame drives the squeezing block to press against the moving block, causing the moving block to move to one side. This also moves the sliding rod and the mounting plate, ultimately pulling the insert rod out of the slot. This design allows the gear to rotate when the lever moves the round rod, thereby moving the movable seat. During the downward rinsing process of the nozzle, the spring pulls the mounting plate and the insert rod, allowing the insert rod to insert into the slot on one side of the gear. This limits the gear's position, preventing the movable seat from moving due to gear rotation during rinsing and affecting the rinsing effect. After the nozzle returns to its upward position, the squeezing block presses against the movable block, causing the insert rod to be pulled out of the slot. This allows the gear to rotate, enabling the lever to push the round rod and rotate the gear, thus adjusting the nozzle position. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of a self-cleaning plate heat exchanger unit.

[0019] Figure 2 This is a schematic diagram of the disassembled structure of a self-cleaning plate heat exchanger unit.

[0020] Figure 3 This is a schematic diagram of the combined structure of a moving component and a limiting component in a self-cleaning plate heat exchanger unit.

[0021] Figure 4 for Figure 3 A magnified structural diagram of point A in the middle.

[0022] Figure 5 This is a schematic diagram showing the disassembled structure of the flushing component in a self-cleaning plate heat exchanger unit.

[0023] Figure 6 This is a schematic diagram showing the disassembled structure of a moving component in a self-cleaning plate heat exchanger unit.

[0024] Figure 7 for Figure 6 A magnified structural diagram at point B in the middle.

[0025] Figure 8 This is a schematic diagram showing the disassembled structure of the limiting component in a self-cleaning plate heat exchanger unit.

[0026] Legend: 1. First upright plate; 2. Screw; 3. Heat exchange plate; 4. Base; 5. Second upright plate; 6. Moving assembly; 601. Roller cover; 602. Moving seat; 603. Round rod; 604. Turntable; 605. Rotating shaft; 606. Gear; 607. Slot; 608. Walking frame; 609. Tooth; 610. Spring pin; 7. Flushing assembly; 701. Electric push rod; 702. Connecting rod; 703. Friction block; 704. Nozzle holder; 705. Support frame; 706. Extrusion block; 707. Nozzle; 708. Water inlet pipe; 709. Connecting frame; 8. Toggle lever; 9. Limiting assembly; 901. Moving block; 902. Slide rod; 903. Mounting plate; 904. Spring; 905. Insert rod; 906. Limiting frame; 907. Fixing frame. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] Please see Figures 1-8 The present invention provides a technical solution: a self-cleaning plate heat exchanger unit, including a heat exchange plate 3, a base 4 at the bottom end of the heat exchange plate 3, and screws 2 penetrating both sides of the heat exchange plate 3, which can clamp the heat exchange plate 3 through the screws 2, and further including: The first upright plate 1 is disposed at one end of the base 4 and is fixed to the screw rod 2 by bolts; The second vertical plate 5 is installed at the other end of the base 4 and is fixedly connected to the screw 2. The second vertical plate 5 has a through hole corresponding to the water inlet of the heat exchange plate 3. The moving component 6 includes a walking frame 608 disposed at the top of the first upright plate 1 and the second upright plate 5, and the outer wall of the walking frame 608 is provided with a moving seat 602. The rinsing assembly 7 includes a nozzle frame 704 disposed on the top of the heat exchange plate 3, and a water inlet pipe 708 is provided at one end of the nozzle frame 704. A nozzle 707 is installed on one side of the nozzle frame 704. Water is supplied to the nozzle 707 through the water inlet pipe 708 and sprayed out to rinse one side of the heat exchange plate 3. It also includes: a support frame 705, which is disposed on the outside of the nozzle frame 704, and the nozzle frame 704 is rotatably connected to the grooves opened on the inner side of the support frame 705 through the protrusions at both ends; The connecting rod 702 is mounted on the top of the support frame 705, and a friction block 703 is slidably mounted on the outer wall of the connecting rod 702. The connecting rod 702 passes through the through hole opened in the movable seat 602, and the bottom end of the friction block 703 is fixedly connected to the movable seat 602. The friction block 703 can increase the friction force of the connecting rod 702 when it moves. It also includes: an extrusion block 706, which is mounted on the top surface of the support frame 705; The connecting frame 709 is located on one side of the nozzle frame 704 and is hinged to one side of the nozzle frame 704. The up and down movement of the connecting frame 709 can drive the nozzle frame 704 to swing. An electric push rod 701 is located at the top of the connecting frame 709. The telescopic end of the electric push rod 701 passes through the movable seat 602 and is fixedly connected to the connecting frame 709. The electric push rod 701 is installed on the top surface of the movable seat 602 and can drive the connecting frame 709 to move.

[0029] The specific implementation is as follows: When the heat exchange plate 3 needs to be cleaned, the bolts used to fix the heat exchange plate 3 can be loosened and moved to one end of the screw 2, so that the heat exchange plate 3 can be pushed one by one to one side of the first vertical plate 1. At this time, since the heat exchange plate 3 is not separated from the screw 2, and the bottom end is supported by the base 4, the heat exchange plate 3 can be made to stand on one side of the first vertical plate 1. Furthermore, after moving a single heat exchange plate 3 to one side of the first vertical plate 1, the connecting frame 709 can be moved downward by the electric push rod 701. At the same time, the connecting frame 709 pushes the nozzle frame 704, thereby causing the nozzle frame 704 to rotate. At this time, due to the large resistance between the friction block 703 and the connecting rod 702, the connecting rod 702 support frame 705 does not move. When the nozzle frame 704 rotates to a certain angle, the nozzle frame 704 and the support frame 705 come into contact. Thus, as the connecting frame 709 moves, the nozzle frame 704 and the support frame 705 move downward. Water is injected into the nozzle 707 through the water inlet pipe 708, and water is sprayed out through the nozzle 707 to rinse the heat exchange plates 3 on both sides. Furthermore, when the electric push rod 701 moves the nozzle 707 to the bottom, the electric push rod 701 drives the connecting frame 709 to move upward. At this time, under the action of the friction block 703, the connecting rod 702 and the support frame 705 do not move. Meanwhile, as the connecting frame 709 rises, it can drive the nozzle frame 704 to swing in the other direction. When the nozzle frame 704 comes into contact with the support frame 705 on the other side, the support frame 705 rises along with the nozzle frame 704.

[0030] The moving component 6 also includes: teeth 609, which are linearly arranged at the bottom end of the walking frame 608; Roller cover 601, rollers are provided inside roller cover 601, and roller cover 601 is installed inside movable seat 602, and the rollers roll in the groove provided on the top surface of walking frame 608; It also includes: a gear 606, which is disposed inside the movable seat 602, and a rotating shaft 605 is mounted on one side of the gear 606. The rotating shaft 605 is rotatably installed in the through hole provided in the movable seat 602, and the gear 606 meshes with the teeth 609. Turntable 604 is installed at one end of rotating shaft 605, and can drive gear 606 to rotate. It also includes: a round rod 603, which is installed on one side of the turntable 604. The turntable 604 can be rotated by moving the round rod 603 through the lever 8; A spring pin 610 is provided on one side of the gear 606, and a groove corresponding to the spring pin 610 is provided on one side of the movable seat 602. The connection between the spring pin 610 and the groove on one side of the movable seat 602 can prevent the gear 606 from rotating too much. Slot 607 is located on the other side of gear 606 and is used to limit gear 606.

[0031] The specific implementation is as follows: During the process of moving the heat exchange plate 3 from one side to the other, the lever 8 at the top of the heat exchange plate 3 can push the round rod 603 to swing and drive the turntable 604 to rotate. In turn, the rotating shaft 605 drives the gear 606 to rotate, so that the gear 606 moves on the surface of the teeth 609, thereby driving the moving seat 602 to move a certain distance. This ensures that as the heat exchange plate 3 gradually moves from one side to the other, the nozzle 707 is always at approximately the same distance from the heat exchange plates 3 on both sides, thereby ensuring the rinsing effect when the nozzle 707 is rinsing. Furthermore, during the rotation of gear 606, spring pin 610 can move along with the rotation of gear 606. When lever 8 separates from round rod 603, spring pin 610 is located at the edge of the groove provided on the inner side of movable seat 602. Therefore, under the pressure of spring pin 610 on the edge, spring pin 610 slides into the groove, thereby ensuring that gear 606 rotates at a certain angle and that movable seat 602 can move a certain distance along with the rotation of gear 606.

[0032] Limiting component 9 includes a fixing frame 907 disposed inside the movable seat 602, and a gear 606 is located on one side of the fixing frame 907; Limiting bracket 906 is installed on one side of fixing bracket 907; It also includes: a plug rod 905, which is slidably installed in the through hole of the fixing bracket 907, and the plug rod 905 corresponds to the slot 607 on one side of the gear 606. By inserting the plug rod 905 into the slot 607, the gear 606 can be limited. Mounting plate 903 is installed at one end of the insertion rod 905 and is used to connect the insertion rod 905. It also includes: a spring 904, which is disposed between the mounting plate 903 and the fixing bracket 907 and is fixedly connected to both. The spring 904 is in a stretched state. By pulling the mounting plate 903 through the spring 904, the insertion rod 905 can be driven into the slot 607. The slide rod 902 is slidably installed in the through hole opened in the limit frame 906, and one end of the slide rod 902 is fixedly connected to the mounting plate 903; It also includes: a movable block 901, which is installed at one end of the slide bar 902. The bottom surface of the movable block 901 has a groove, and the movable block 901 corresponds to the pressing block 706. By pressing the movable block 901 by the pressing block 706, the slide bar 902 and the insertion rod 905 can be moved, and the insertion rod 905 can be pulled out from the slot 607.

[0033] The specific implementation is as follows: During the process of the electric push rod 701 driving the nozzle 707 to move downward, the support frame 705 moves downward, which can drive the squeezing block 706 to separate from the moving block 901. Under the action of the spring 904, the mounting plate 903 and the insertion rod 905 are pulled to move, and the insertion rod 905 can be inserted into the slot 607. This avoids the situation where the gear 606 rotates during the process of the nozzle 707 moving downward, causing the moving seat 602 to move, which would affect the rinsing effect. Furthermore, when the electric push rod 701 moves the nozzle 707 to the top for reset, the support frame 705 drives the pressing block 706 to press the moving block 901, causing the moving block 901 to move to one side under pressure, which in turn drives the slide rod 902 and the mounting plate 903 to move, thereby causing the insertion rod 905 to be pulled out of the slot 607, so that when the lever 8 moves the round rod 603, the gear 606 can rotate accordingly, thereby driving the moving seat 602 to move.

[0034] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A self-cleaning plate heat exchanger unit, comprising: A heat exchange plate (3), the bottom end of which is provided with a base (4), and screws (2) passing through both sides of the heat exchange plate (3), which can clamp the heat exchange plate (3) by means of the screws (2), characterized in that it further includes: The first upright plate (1) is disposed at one end of the base (4), and the first upright plate (1) is fixed to the screw (2) by bolts; The second vertical plate (5) is installed at the other end of the base (4) and is fixedly connected to the screw (2). The second vertical plate (5) has a through hole corresponding to the water inlet of the heat exchange plate (3). The moving component (6) includes a walking frame (608) disposed at the top of the first upright plate (1) and the second upright plate (5), and the outer wall of the walking frame (608) is provided with a moving seat (602). The rinsing assembly (7) includes a nozzle frame (704) disposed on the top of the heat exchange plate (3), and a water inlet pipe (708) is provided at one end of the nozzle frame (704). A nozzle (707) is installed on one side of the nozzle frame (704). Water is delivered into the nozzle (707) through the water inlet pipe (708) and sprayed out to rinse one side of the heat exchange plate (3).

2. The self-cleaning plate heat exchanger unit according to claim 1, characterized in that, Also includes: Support frame (705), the support frame (705) is disposed on the outside of the nozzle frame (704), and the nozzle frame (704) is rotatably connected to the groove opened on the inner side of the support frame (705) through the protrusions at both ends; The connecting rod (702) is installed on the top of the support frame (705), and a friction block (703) is slidably installed on the outer wall of the connecting rod (702). The connecting rod (702) passes through the through hole opened in the movable seat (602), and the bottom end of the friction block (703) is fixedly connected to the movable seat (602). The friction block (703) can increase the friction force of the connecting rod (702) when it moves.

3. The self-cleaning plate heat exchanger unit according to claim 2, characterized in that, Also includes: An extrusion block (706) is mounted on the top surface of a support frame (705); A connecting frame (709) is located on one side of the nozzle frame (704), and the connecting frame (709) is hinged to one side of the nozzle frame (704). The up and down movement of the connecting frame (709) can drive the nozzle frame (704) to swing. An electric push rod (701) is provided at the top of the connecting frame (709), and the telescopic end of the electric push rod (701) passes through the movable seat (602) and is fixedly connected to the connecting frame (709). The electric push rod (701) is installed on the top surface of the movable seat (602) and can drive the connecting frame (709) to move.

4. The self-cleaning plate heat exchanger unit according to claim 1, characterized in that, The moving component (6) also includes: Teeth (609), the teeth (609) are linearly arranged at the bottom end of the walking frame (608); Roller cover (601) is provided with rollers and is installed inside the movable seat (602). The rollers roll in the groove provided on the top surface of the walking frame (608).

5. A self-cleaning plate heat exchanger unit according to claim 4, characterized in that, Also includes: Gear (606), the gear (606) is disposed inside the movable seat (602), and a rotating shaft (605) is installed on one side of the gear (606), and the rotating shaft (605) is rotatably installed in the through hole provided in the movable seat (602), and the gear (606) meshes with the teeth (609); A turntable (604) is installed at one end of a rotating shaft (605), and the turntable (604) can drive the gear (606) to rotate.

6. A self-cleaning plate heat exchanger unit according to claim 5, characterized in that, Also includes: A round rod (603) is installed on one side of a turntable (604). The turntable (604) can be rotated by moving the round rod (603) with the lever (8). A spring pin (610) is provided on one side of the gear (606), and a groove corresponding to the spring pin (610) is provided on one side of the movable seat (602). The connection between the spring pin (610) and the groove on one side of the movable seat (602) can prevent the gear (606) from rotating too much. A slot (607) is provided on the other side of the gear (606) for limiting the gear (606).

7. A self-cleaning plate heat exchanger unit according to claim 5, characterized in that, Also includes: The limiting component (9) includes a fixed frame (907) disposed inside the movable seat (602), and a gear (606) is located on one side of the fixed frame (907); A limiting bracket (906) is mounted on one side of a fixing bracket (907).

8. A self-cleaning plate heat exchanger unit according to claim 7, characterized in that, Also includes: Insert rod (905), which is slidably installed in the through hole of the fixing frame (907), and the insert rod (905) corresponds to the slot (607) on one side of the gear (606). By inserting the insert rod (905) into the slot (607), the gear (606) can be limited. Mounting plate (903) is installed on one end of the insertion rod (905) and the insertion rod (905) is connected through the mounting plate (903).

9. A self-cleaning plate heat exchanger unit according to claim 8, characterized in that, Also includes: A spring (904) is disposed between the mounting plate (903) and the fixing bracket (907), and the spring (904) is fixedly connected to both of them. The spring (904) is in a stretched state. By pulling the mounting plate (903) with the spring (904), the insertion rod (905) can be driven to insert into the slot (607). The slide rod (902) is slidably installed in the through hole opened in the limit frame (906), and one end of the slide rod (902) is fixedly connected to the mounting plate (903).

10. A self-cleaning plate heat exchanger unit according to claim 9, characterized in that, Also includes: The movable block (901) is installed at one end of the slide bar (902), and the bottom surface of the movable block (901) is provided with a groove. The movable block (901) corresponds to the pressing block (706). By pressing the movable block (901) by the pressing block (706), the slide bar (902) and the insertion rod (905) can be moved, and the insertion rod (905) can be pulled out from the slot (607).

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