Plate heat exchanger

Abstract

The invention provides a plate heat exchanger, and relates to the technical field of plate heat exchanger equipment, the plate heat exchanger comprises a first side plate and a fixed side plate, the first side plate and the fixed side plate are fixedly connected through a connecting plate, a second side plate is arranged on the opposite sides of the first side plate and the fixed side plate, and a pulley piece is movably connected to the bottom of the second side plate; the second side plate is movably connected between the first side plate and the fixed side plate through a pulley piece, and the opposite sides of the fixed side plate and the second side plate are fixedly connected with a separation mechanism. And then in the process that the second side plate and the first side plate are relatively away from each other, the heat exchange plates can be separated at the positions of the first insertion plate and the second insertion plate, and compared with traditional disassembly and maintenance operation, the problem that the sealing performance between the heat exchange plates is reduced after overall disassembly can be effectively prevented.

Description

Technical Field

[0001] This invention relates to the field of plate heat exchanger equipment technology, and more particularly to a plate heat exchanger. Background Technology

[0002] Plate heat exchangers are a type of equipment specifically designed for heat exchange in industrial applications. They are highly efficient heat exchangers composed of a series of corrugated metal plates stacked together. Thin rectangular channels are formed between the plates, allowing heat or cold flow to exchange heat. The heat exchange efficiency is extremely high. Plate heat exchangers are ideal for liquid-liquid and liquid-vapor heat exchange. They feature high heat exchange efficiency, low heat loss, compact and lightweight structure, small footprint, wide application, and long service life. Under the same pressure loss conditions, their heat transfer coefficient is three to five times higher than that of tubular heat exchangers, and their footprint is one-third that of tubular heat exchangers. The heat recovery rate can reach over 90%. They are commonly used in applications such as industrial energy secondary utilization and enterprise production and processing.

[0003] Chinese patent CN113483586B discloses "a plate heat exchanger," comprising a guide rod, an end plate, a C-shaped through groove, an L-shaped groove, a limiting assembly, plates, a gasket assembly, heat dissipation through holes, and a guide assembly. The gasket assembly includes a gasket groove, a stepped hole, a clamping groove, a gasket, a compression groove, a compression spring, an L-shaped block, and a wedge block. This invention enables quick disassembly of the gaskets through the gasket assembly and increases the sealing effect between the gaskets, preventing gasket deformation from affecting their use. The guide assembly allows for adjustment of the screw length based on the number of plates and increases the compression effect of the end plate on the plates. The clamping chain limits the screw, preventing it from moving within the end plate and causing loosening between the plates, thus affecting the heat exchanger's heat exchange efficiency.

[0004] However, in existing technologies, plate heat exchangers are typically disassembled as a whole, with the heat exchange plates sealed by rubber strips pressing against each other. After the heat exchange plates are separated and joined, the sealing effect provided by the rubber strips is significantly reduced, leading to leakage of the internal circulating medium during normal operation and posing a safety hazard. In addition, the disassembly structure in existing technologies provides poor actual contact effect, and the side plates at both ends of the heat exchanger are prone to thread rotation, causing the side plates to loosen. Finally, current plate heat exchangers are composed of multiple stacked heat exchange plates, with the medium inlet and outlet on one side. This results in high working efficiency for the heat exchange plates near the medium inlet, while the heat exchange efficiency is low for the heat exchange plates further away from the medium inlet. Over time, this can lead to damage to the heat exchange plates in certain areas. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a plate heat exchanger.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a plate heat exchanger, comprising a first side plate and a fixed side plate, the first side plate and the fixed side plate being fixedly connected by a connecting plate, a second side plate being provided on the opposite side of the first side plate and the fixed side plate, a pulley being movably connected to the bottom of the second side plate, and the second side plate being movably connected between the first side plate and the fixed side plate by the pulley, a separation mechanism being fixedly connected to the opposite side of the fixed side plate and the second side plate, a plurality of heat exchange plates being provided on the opposite side of the second side plate and the first side plate, a flow control mechanism being fixedly connected to the surface of the heat exchange plates, a top slide rail being fixedly connected to the top of the first side plate, two sets of separation slide rails being fixedly connected to the bottom of the second side plate, a bottom slide rail being fixedly connected to the bottom of the first side plate, and the bottom slide rail being located between the two sets of separation slide rails, two sets of insert mechanisms being fixedly connected to the surface of the top slide rail and the separation slide rail, and four sets of fixing rods being provided between the second side plate and the first side plate.

[0007] Furthermore, the insert mechanism includes a sliding rod, a first return spring, a pressing plate, a first insert plate, a pull rod, a second return spring, a sliding block, a second insert plate, and several sets of fixed threaded holes. The first and second return springs are respectively sleeved on the surfaces of the sliding rod and the pull rod. One end of the pressing plate is slidably connected to the sliding rod. The first insert plate is fixedly connected to the other end of the pressing plate away from the sliding rod. One end of the pull rod is slidably connected to the sliding block, and the pull rod is elastically connected to the sliding block through the second return spring. The second insert plate is movably connected to the sliding block. One side of the sliding block is threadedly connected to the fixed threaded hole through a fixing bolt.

[0008] The above technical solution allows for the separation and docking of the first and second insert plates with the heat exchange plate by adjusting the pressing plate and the pull rod respectively. When the first and second side plates separate, the first and second insert plates can respectively abut against the heat exchange plates on both sides, so that the heat exchange plates can separate in the correct position.

[0009] Furthermore, a groove is provided at the bottom of the separating slide rail frame near the slide rod, and the slide rod is slidably connected to the groove. The pressing plate is elastically connected to the slide rod through a first reset spring, and the first insert plate is located at the bottom of two adjacent heat exchange plates.

[0010] Through the above technical solution, the sliding effect between the sliding rod and the elastic reset effect of the first reset spring enable the first insert plate to flexibly move between the positions of each heat exchange plate.

[0011] Furthermore, the sliding block is slidably connected to the top slide rail frame, and several sets of fixed threaded holes are opened on one side of the top slide rail frame, with the second insert plate located at the top of two adjacent sets of heat exchange plates.

[0012] Through the above technical solution, the sliding effect of the sliding block also drives the second finned plate to move flexibly on the top of the heat exchange plate. In this way, the second finned plate works with the first finned plate to resist the heat exchange plate.

[0013] Furthermore, the flow control mechanism includes a movable pin, a pin seat, an abutment block, a torsion spring, a derivative rod, four flow-diverting rubber strips, and a sealing rubber strip. The movable pin is inserted into one side of the pin seat, the abutment block is located at the bottom end of the pin seat, the torsion spring is sleeved on the surface of the pin seat, the derivative rod is fixedly connected to the movable pin, and the derivative rod is elastically connected to the torsion spring through the pin seat.

[0014] Through the above technical solution, the torsion spring on the surface of the pin seat achieves elastic deformation under the contact of the contact block and the derivative rod, providing the derivative rod with an upward contact force. Since the actual contact block positions of the heat exchange plates are different at each position, the swing angle of the derivative rod near the medium inlet is different from that of the derivative rod far from the medium inlet, thereby controlling the flow rate of the medium entering the inner side of different heat exchange plates and improving the overall working efficiency of the heat exchanger.

[0015] Furthermore, the pin seat and the contact block are both fixedly connected to the heat exchange plate, the four sets of diversion rubber strips are all fixedly connected to the surface of the heat exchange plate, and the four sets of diversion rubber strips are distributed opposite to each other. The sealing rubber strip is fixedly connected to the heat exchange plate.

[0016] Through the above technical solution, the four sets of mutually opposing diversion rubber strips make the fluid medium present an arc-shaped flow trajectory on the inner side of the heat exchange plate, increasing the contact area between the medium and the heat exchange plate, thereby improving the heat exchange efficiency.

[0017] Furthermore, the derivative rod is rotatably connected to the heat exchange plate via a pin seat, and the size of the derivative rod is twice the size of the sealing rubber strip.

[0018] Through the above technical solution, the sealing rubber strip directly provides a sealing effect after the heat exchange plates are connected, preventing media leakage.

[0019] Furthermore, the separation mechanism includes a double-ended threaded rod, two sets of transmission blocks, two sets of first swing arms, a second swing arm, a pivot pin base, and a stabilizing slide bar. The two sets of transmission blocks are respectively threaded to the upper and lower ends of the double-ended threaded rod. The two sets of first swing arms are respectively movably connected to the left and right sides of the transmission blocks through pins. The first swing arms and the second swing arms are movably connected. The ends of the first and second swing arms that are far apart from each other are movably connected to the pivot pin base.

[0020] With the above technical solution, rotating the double-ended threaded rod can drive the two sets of transmission blocks to move in opposite directions. In this way, the first and second swing rods can be subjected to force to make contact or pull at both ends, thereby causing the second side plate to move closer to or further away from the fixed side plate.

[0021] Furthermore, the pivot base is fixedly connected to the second side plate and the fixed side plate respectively, the stabilizing slide rod is fixedly connected to the second side plate, and one end of the stabilizing slide rod is slidably connected to the fixed side plate through a bushing.

[0022] Through the above technical solution, the pivot base directly provides the connection and fixation effect of the first and second rocker arms, thereby achieving the limit position, while the stabilizing slide bar effectively improves the stability of the double-ended threaded rod during rotation.

[0023] Furthermore, the threaded connections between the two sets of transmission blocks and the double-ended threaded rods are in opposite directions. A wrench is provided at the top of the double-ended threaded rod. The first and second swing arms corresponding to the two sets of transmission blocks are distributed opposite to each other. The length of the double-ended threaded rod is lower than the height of the second side plate and the fixed side plate.

[0024] Through the above technical solution, the transmission blocks with opposite threaded connection directions achieve the object motion effect after the double-ended threaded rod rotates, and the length trajectory of the double-ended threaded rod is set between the fixed side plate and the second side plate, which improves feasibility.

[0025] Compared with the prior art, the advantages and positive effects of the present invention are as follows:

[0026] I. The present invention, through the setting of the insert mechanism, can layer several groups of heat exchange plates at a specified position. Then, as the second side plate moves away from the first side plate, the heat exchange plates can be separated at the positions of the first insert plate and the second insert plate. Compared with the traditional disassembly and maintenance operation, it can realize the cleaning or maintenance and repair operation of the heat exchange plate at a single point, and can effectively prevent the problem of reduced sealing between heat exchange plates after overall disassembly.

[0027] Second, the present invention, through the flow control mechanism, can achieve different swing directions of the derivative rod by simply adjusting the position of the contact block at different positions of the heat exchange plate. That is, the heat exchange plate closer to the medium inlet has a low medium flow effect, while the heat exchange plate farther away from the medium inlet has a high flow effect. This ensures that the medium can enter each heat exchange plate in an equal amount to achieve heat exchange operation. Compared with the traditional heat exchange structure, it can effectively improve the service life of the heat exchange plate and prevent overheating or low heat exchange efficiency.

[0028] Third, the present invention, through the separation mechanism, allows the swinging of the first and second swing rods to pull or push the second side plate relative to the fixed side plate to change its position, thereby achieving the separation operation of the heat exchange plate. Compared with the traditional support structure, the opposing threaded connection of the two sets of transmission blocks can effectively improve the contact effect, prevent the second side plate from moving with the fixed side plate, and the operation is simple, requiring only the rotation of the double-ended threaded rod to achieve separation. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the overall structure of a plate heat exchanger provided by the present invention.

[0030] Figure 2 This is a disassembly diagram of the overall structure of a plate heat exchanger provided by the present invention.

[0031] Figure 3 This is a schematic diagram of the connection structure of the second side plate of a plate heat exchanger provided by the present invention.

[0032] Figure 4 This is a schematic diagram of a side plate connection structure for a plate heat exchanger provided by the present invention.

[0033] Figure 5 This is a schematic diagram of the disassembly structure of a plate heat exchanger separation mechanism provided by the present invention.

[0034] Figure 6 This is a schematic diagram of the surface structure of a plate heat exchanger plate provided by the present invention.

[0035] Figure 7 A plate heat exchanger provided by the present invention Figure 2 Enlarged schematic diagram of the structure at point A.

[0036] Figure 8 A plate heat exchanger provided by the present invention Figure 3 Enlarged schematic diagram of the structure at point B.

[0037] Figure 9 A plate heat exchanger provided by the present invention Figure 3 Enlarged schematic diagram of the structure at point C.

[0038] Figure 10A plate heat exchanger provided by the present invention Figure 4 Enlarged schematic diagram of the structure at point D.

[0039] Legend:

[0040] 1. First side plate; 2. Fixed side plate; 3. Second side plate; 4. Pulley assembly; 5. Separation mechanism; 501. Double-ended threaded rod; 502. Transmission block; 503. First swing rod; 504. Second swing rod; 505. Rotating pin base; 506. Stabilizing slide rod; 6. Heat exchange plate; 7. Flow control mechanism; 701. Movable pin; 702. Pin seat; 703. Abutting block; 704. Torsion spring; 705. Derivative rod; 706. Separation mechanism. 707. Flowing rubber strip; 8. Sealing rubber strip; 9. Top slide rail frame; 10. Separation slide rail frame; 11. Bottom slide rail frame; 11. Insertion plate mechanism; 1101. Sliding rod; 1102. First return spring; 1103. Pressing plate; 1104. First insert plate; 1105. Pull rod; 1106. Second return spring; 1107. Sliding block; 1108. Second insert plate; 1109. Fixing threaded hole; 12. Fixing rod. Detailed Implementation

[0041] 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.

[0042] like Figures 1-10 As shown, the present invention provides a technical solution: a plate heat exchanger, including a first side plate 1 and a fixed side plate 2, which are fixedly connected by a connecting plate. A second side plate 3 is provided on the opposite side of the first side plate 1 and the fixed side plate 2. A pulley 4 is movably connected to the bottom of the second side plate 3, and the second side plate 3 is movably connected between the first side plate 1 and the fixed side plate 2 through the pulley 4. A separation mechanism 5 is fixedly connected on the opposite side of the fixed side plate 2 and the second side plate 3. Several sets of heat exchange plates 6 are provided on the opposite side of the first side plate 1. A flow control mechanism 7 is fixedly connected to the surface of the heat exchange plate 6. A top slide rail frame 8 is fixedly connected to the top of the first side plate 1. Two sets of separation slide rail frames 9 are fixedly connected to the bottom of the second side plate 3. A bottom slide rail frame 10 is fixedly connected to the bottom of the first side plate 1, and the bottom slide rail frame 10 is located between the two sets of separation slide rail frames 9. Two sets of insert mechanisms 11 are fixedly connected to the surface of the top slide rail frame 8 and the separation slide rail frame 9. Four sets of fixing rods 12 are provided between the second side plate 3 and the first side plate 1.

[0043] In use, the heat exchange plates 6 are inserted into designated positions by moving the insert mechanism 11 on the surfaces of the top slide rail 8 and the separation slide rail 9. Then, the separation mechanism 5 on the opposite side of the fixed side plate 2 and the second side plate 3 is moved. Moving the separation mechanism 5 causes the fixed side plate 2 and the second side plate 3 to move closer or further apart. The second side plate 3 moves on the ground via pulleys 4. Thus, with the insertion of the insert mechanism 11, the second side plate 3 can pull a certain number of heat exchange plates 6 to slide on the surfaces of the bottom slide rail 10 and the top slide rail 8. Conversely, the first side plate 1 pulls a certain number of heat exchange plates 6 to slide on the surface of the separation slide rail 9, achieving separation from the first side plate 1. This facilitates targeted maintenance and repair of the heat exchange plate 6. Compared with traditional disassembly operations, it effectively reduces the problem of affecting the sealing effect after the heat exchange plate 6 is completely disassembled. After the heat exchange plate 6 is maintained, the second side plate 3 and the first side plate 1 are fixed by the fixing rod 12 to ensure the stability of the connection of the heat exchange plate 6. The heat exchange plate 6 is equipped with a flow control mechanism 7. The flow control mechanism 7 for each heat exchange plate 6 has a different orientation. In this way, the medium flowing through the heat exchange plate 6 near the medium port can be consistent with the medium flowing through the heat exchange plate 6 far from the medium port, thereby ensuring that the overall heat exchange efficiency of the heat exchanger is the same and preventing the heat exchange plate 6 from overheating and being damaged.

[0044] like Figure 3 , Figure 8 and Figure 9 As shown, the insert mechanism 11 includes a sliding rod 1101, a first return spring 1102, a pressing plate 1103, a first insert plate 1104, a pull rod 1105, a second return spring 1106, a sliding block 1107, a second insert plate 1108, and several sets of fixing threaded holes 1109. The first return spring 1102 and the second return spring 1106 are respectively sleeved on the surfaces of the sliding rod 1101 and the pull rod 1105. One end of the pressing plate 1103 is connected to the sliding rod 1104. A sliding connection is formed, with the first insert plate 1104 fixedly connected to the other end of the pressing plate 1103 away from the sliding rod 1101. One end of the pull rod 1105 is slidably connected to the sliding block 1107, and the pull rod 1105 is elastically connected to the sliding block 1107 through the second return spring 1106. The second insert plate 1108 is movably connected to the sliding block 1107, and one side of the sliding block 1107 is threadedly connected to the fixing threaded hole 1109 through a fixing bolt. A sliding groove is provided at the bottom of the separating slide rail frame 9 near the sliding rod 1101, and the sliding rod 1101 is slidably connected to the sliding groove. The pressing plate 1103 is elastically connected to the sliding rod 1101 through the first return spring 1102. The first insert plate 1104 is located at the bottom of two adjacent sets of heat exchange plates 6. The sliding block 1107 is slidably connected to the top slide rail frame 8, and several sets of fixed threaded holes 1109 are opened on one side of the top slide rail frame 8. The second insert plate 1108 is located at the top of the two adjacent sets of heat exchange plates 6.

[0045] In this embodiment, the pressing plate 1103 presses down and squeezes the first return spring 1102 on the surface of the sliding rod 1101, thus separating the first insert plate 1104 from the heat exchange plate 6. At this time, the sliding rod 1101 at the bottom of the sliding separation slide rail 9 is slid to align with the heat exchange plate 6 at the specified position. Then, the pull rod 1105 is pulled to squeeze the second return spring 1106, separating the pull rod 1105 from the second insert plate 1108. The second insert plate 1108 can then detach from the heat exchange plate 6. Subsequently, the sliding block 1107 on the surface of the top slide rail 8 is pulled to align with the fixed threaded holes 1109 at different positions. Then, the second insert plate 1108 is inserted into the inside of the heat exchange plate 6. This allows the heat exchange plate 6 to be separated at the specified position, enabling surface maintenance operations on the heat exchange plate 6 at fixed points. Compared with the prior art, this can prevent the problem of affecting the sealing effect after the heat exchange plate 6 is completely disassembled.

[0046] like Figure 6 and Figure 7 As shown, the flow control mechanism 7 includes a movable pin 701, a pin seat 702, an abutment block 703, a torsion spring 704, a derivative rod 705, four-component flow-control rubber strips 706, and a sealing rubber strip 707. The movable pin 701 is inserted into one side of the pin seat 702, the abutment block 703 is located at the bottom end of the pin seat 702, the torsion spring 704 is sleeved on the surface of the pin seat 702, the derivative rod 705 is fixedly connected to the movable pin 701, and the derivative rod 705 is elastically connected to the torsion spring 704 through the pin seat 702. The pin seat 702 and the abutment block 703 are both fixedly connected to the heat exchange plate 6, the four-component flow-control rubber strips 706 are all fixedly connected to the surface of the heat exchange plate 6, and the four-component flow-control rubber strips 706 are distributed opposite to each other. The sealing rubber strip 707 is fixedly connected to the heat exchange plate 6. The derivative rod 705 is rotatably connected to the heat exchange plate 6 via the pin seat 702, and the size of the derivative rod 705 is twice the size of the sealing rubber strip 707.

[0047] In this embodiment, since the movable pin 701 is movably connected to the pin seat 702, and a torsion spring 704 is sleeved on the surface of the pin seat 702, the bottom end of the torsion spring 704 abuts against the contact block 703, and the top end of the torsion spring 704 abuts against the derivative rod 705, the derivative rod 705 fixed on one side of the movable pin 701 can be kept in a certain angle inside the heat exchange plate 6. The derivative rods 705 in each heat exchange plate 6 have different orientations. The orientation of the derivative rods 705 can be achieved by changing the position of the contact block 703. In this way, the derivative rods 705 in the heat exchange plate 6 near the medium inlet can reduce the flow area of ​​the medium entering the heat exchange plate 6 at that position, while the heat exchange plate 6 away from the medium inlet can increase the flow area of ​​the medium. This achieves uniform entry of the medium into the heat exchange plate 6. The four-component flow rubber strips 706 are distributed in opposite directions, so that the medium moves in an arc-shaped trajectory inside the heat exchange plate 6, and the actual heat exchange efficiency of the medium is improved under the sealing of the sealing rubber strip 707.

[0048] like Figure 4 , Figure 5 and Figure 10 As shown, the separation mechanism 5 includes a double-ended threaded rod 501, two sets of transmission blocks 502, two sets of first swing rods 503 and second swing rods 504, a pivot base 505, and a stabilizing slide rod 506. The two sets of transmission blocks 502 are threaded to the upper and lower ends of the double-ended threaded rod 501, respectively. The two sets of first swing rods 503 are movably connected to the left and right sides of the transmission blocks 502 via pins. The first swing rods 503 and second swing rods 504 are movably connected, and the ends of the first swing rods 503 and second swing rods 504 that are far apart from each other are movably connected to the pivot base 505. The pivot base 505 is fixedly connected to the second side plate 3 and the fixed side plate 2, respectively. The stabilizing slide rod 506 is fixedly connected to the second side plate 3, and one end of the stabilizing slide rod 506 is slidably connected to the fixed side plate 2 via a bushing. The threaded connections between the two sets of transmission blocks 502 and the double-ended threaded rod 501 are in opposite directions. A wrench is provided on the top of the double-ended threaded rod 501. The first swing rod 503 and the second swing rod 504 corresponding to the two sets of transmission blocks 502 are distributed opposite to each other. The length of the double-ended threaded rod 501 is lower than the height of the second side plate 3 and the fixed side plate 2.

[0049] In this embodiment, rotating the double-ended threaded rod 501 causes the transmission blocks 502 at both ends of the double-ended threaded rod 501 to move in opposite directions. The transmission blocks 502 cause the first swing rod 503 and the second swing rod 504 to swing. The first swing rod 503 and the second swing rod 504 are respectively limited in movement between the second side plate 3 and the fixed side plate 2 through the pivot pin base 505. In this way, the rotation of the double-ended threaded rod 501 can cause the second side plate 3 and the fixed side plate 2 to move closer and further apart. With the connection of the stabilizing slide rod 506, the stability of the fixed side plate 2 and the second side plate 3 is achieved. Compared with the traditional connection support structure, this structure can effectively prevent the second side plate 3 and the fixed side plate 2 from moving closer together due to the rotation of the double-ended threaded rod 501 under pressure. Thus, together with the fixed rod 12, it can effectively ensure the stability between the heat exchange plates 6 and prevent the medium leakage.

[0050] Working Principle: During normal operation, a hot or cold source medium is introduced into one side of the first side plate 1. When the medium passes through several sets of heat exchange plates 6, it is blocked by the flow control mechanism 7 inside the heat exchange plates 6. Specifically, when the medium is near the heat exchange plate 6 located close to the first side plate 1, the inner derivative rod 705 of the heat exchange plate 6 can elastically abut against the contact block 703 through the torsion spring 704 outside the pin seat 702. This causes the derivative rod 705 fixed on one side of the movable pin 701 to block a certain amount of medium from entering the interior of the heat exchange plate 6, while the medium can only flow to the heat exchange plate 6 located away from the first side plate 1. Thus, only the position of the contact block 703 needs to be adjusted or changed before installing the heat exchange plates 6 to achieve different orientations of the derivative rods 705 inside different heat exchange plates 6, thereby controlling the flow. The medium flows through the designated area. After entering the heat exchange plate 6, the medium, under the action of the opposing distributed diversion rubber strips 706, presents an arc-shaped flow trajectory inside the heat exchange plate 6, thereby increasing the heat exchange area. The sealing effect of the sealing rubber strips 707 ensures the connection and sealing effect between the heat exchange plates 6, thus enabling normal heat exchange operation. When individual heat exchange plates 6 are damaged or malfunction, it is only necessary to move the insert mechanism 11 on the surface of the separation slide rail 9 and the top slide rail 8. After the pressing plate 1103 is pressed downwards, it causes the first insert plate 1104 to separate from the heat exchange plate 6, thereby sliding the sliding rod 1101 at the bottom of the separation slide rail 9. Releasing the pressing plate 1103 at the designated position allows the first return spring 1102 to re-drive the first insert plate 1104 under the action of elasticity. A first insert plate 1104 aligns with a heat exchange plate 6 at a predetermined position. Similarly, when the pull rod 1105 is pulled, the second insert plate 1108 is released, separating it from the heat exchange plate 6 and pulling the sliding block 1107. This re-aligns the second insert plate 1108 with the heat exchange plate 6 at the predetermined position. Under the elastic action of the second return spring 1106, the second insert plate 1108 is resisted, and its position is fixed by the alignment of the fixed threaded hole 1109 and the sliding block 1107. Then, the separation mechanism 5 between the second side plate 3 and the fixed side plate 2 is rotated. The double-ended threaded rod 501, after rotation, drives the upper and lower end transmission blocks 502 to engage in opposing threaded transmission. The transmission blocks 502 then pull the first swing rod 503 and the second swing rod on both sides. When rod 504 swings, and with the connection between the pivot base 505 and the second side plate 3 and the fixed side plate 2, the second side plate 3 moves in opposite directions to the fixed side plate 2 via pulley 4. Meanwhile, the first insert plate 1104 and the second insert plate 1108 respectively abut against the heat exchange plate 6. Under tension, the heat exchange plate 6 separates at a predetermined position due to the action of the bottom slide rail frame 10 and the top slide rail frame 8 at the bottom end of the first side plate 1. After reconnection, the second side plate 3 and the first side plate 1 are fixed together by the fixing rod 12, and the double-ended threaded rod 501 is tightened, achieving contact between the first swing rod 503 and the second swing rod 504, causing the second side plate 3 to press against the heat exchange plate 6. The stabilizing effect of the double-ended threaded rod 501 is ensured by the stabilizing slide rod 506.This ensures a high level of sealing between the heat exchange plates 6.

[0051] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the protection scope of the present invention.

Claims

1. A plate heat exchanger comprising a first side plate (1) and a fixed side plate (2), characterised in that: The first side plate (1) and the fixed side plate (2) are fixedly connected by a connecting plate. A second side plate (3) is provided on the opposite side of the first side plate (1) and the fixed side plate (2). A pulley (4) is movably connected to the bottom of the second side plate (3), and the second side plate (3) is movably connected between the first side plate (1) and the fixed side plate (2) through the pulley (4). A separation mechanism (5) is fixedly connected on the opposite side of the fixed side plate (2) and the second side plate (3). Several sets of heat exchange plates (6) are provided on the opposite side of the second side plate (3) and the first side plate (1). A flow control mechanism (7) is fixedly connected to the surface of the hot plate (6). A top slide rail frame (8) is fixedly connected to the top of the first side plate (1). Two sets of separation slide rail frames (9) are fixedly connected to the bottom of the second side plate (3). A bottom slide rail frame (10) is fixedly connected to the bottom of the first side plate (1), and the bottom slide rail frame (10) is located between the two sets of separation slide rail frames (9). Two sets of insert mechanisms (11) are fixedly connected to the surfaces of the top slide rail frame (8) and the separation slide rail frame (9). Four sets of fixing rods (12) are provided between the second side plate (3) and the first side plate (1).

2. A plate heat exchanger according to claim 1, characterised in that: The insert mechanism (11) includes a sliding rod (1101), a first return spring (1102), a pressing plate (1103), a first insert plate (1104), a pull rod (1105), a second return spring (1106), a sliding block (1107), a second insert plate (1108), and several sets of fixed threaded holes (1109). The first return spring (1102) and the second return spring (1106) are respectively sleeved on the surfaces of the sliding rod (1101) and the pull rod (1105). One end of the pressing plate (1103) is connected to the sliding rod (1104). 1101) Sliding connection, the first insert plate (1104) is fixedly connected to the other end of the pressing plate (1103) away from the sliding rod (1101), one end of the pull rod (1105) is slidably connected to the sliding block (1107), and the pull rod (1105) is elastically connected to the sliding block (1107) through the second return spring (1106), the second insert plate (1108) is movably connected to the sliding block (1107), and one side of the sliding block (1107) is threadedly connected to the fixed threaded hole (1109) through the fixing bolt.

3. A plate heat exchanger according to claim 2, characterised in that: The bottom of the separating slide rail frame (9) is provided with a sliding groove at one end near the sliding rod (1101), and the sliding rod (1101) is slidably connected to the sliding groove. The pressing plate (1103) is elastically connected to the sliding rod (1101) through the first reset spring (1102). The first insert plate (1104) is located at the bottom of two adjacent heat exchange plates (6).

4. A plate heat exchanger according to claim 3, characterised in that: The sliding block (1107) is slidably connected to the top slide rail frame (8), and a number of fixed threaded holes (1109) are opened on one side of the top slide rail frame (8). The second insert plate (1108) is located at the top of two adjacent heat exchange plates (6).

5. A plate heat exchanger according to claim 1, characterized in that: The flow control mechanism (7) includes a movable pin (701), a pin seat (702), an abutment block (703), a torsion spring (704), a derivative rod (705), four-part flow control rubber strips (706), and a sealing rubber strip (707). The movable pin (701) is inserted into one side of the pin seat (702), the abutment block (703) is located at the bottom end of the pin seat (702), the torsion spring (704) is sleeved on the surface of the pin seat (702), the derivative rod (705) is fixedly connected to the movable pin (701), and the derivative rod (705) is elastically connected to the torsion spring (704) through the pin seat (702).

6. A plate heat exchanger according to claim 5, characterised in that: The pin seat (702) and the contact block (703) are fixedly connected to the heat exchange plate (6), the four sets of diversion rubber strips (706) are fixedly connected to the surface of the heat exchange plate (6), and the four sets of diversion rubber strips (706) are distributed opposite to each other. The sealing rubber strip (707) is fixedly connected to the heat exchange plate (6).

7. A plate heat exchanger according to claim 6, characterised in that: The derivative rod (705) is rotatably connected to the heat exchange plate (6) via a pin seat (702), and the size of the derivative rod (705) is twice the size of the sealing rubber strip (707).

8. A plate heat exchanger according to claim 1, characterized in that: The separation mechanism (5) includes a double-ended threaded rod (501), two sets of transmission blocks (502), two sets of first swing rods (503), second swing rods (504), a pivot base (505), and a stabilizing slide rod (506). The two sets of transmission blocks (502) are respectively threaded to the upper and lower ends of the double-ended threaded rod (501). The two sets of first swing rods (503) are respectively movably connected to the left and right sides of the transmission blocks (502) through pins. The first swing rods (503) and the second swing rods (504) are movably connected. The ends of the first swing rods (503) and the second swing rods (504) that are far apart from each other are movably connected to the pivot base (505).

9. A plate heat exchanger according to claim 8, characterized in that: The pivot base (505) is fixedly connected to the second side plate (3) and the fixed side plate (2) respectively. The stabilizing slide rod (506) is fixedly connected to the second side plate (3), and one end of the stabilizing slide rod (506) is slidably connected to the fixed side plate (2) through a bushing.

10. A plate heat exchanger according to claim 9, characterized in that: The threaded connections between the two sets of transmission blocks (502) and the double-ended threaded rod (501) are in opposite directions. A wrench is provided on the top of the double-ended threaded rod (501). The first swing rod (503) and the second swing rod (504) corresponding to the two sets of transmission blocks (502) are distributed opposite to each other. The length of the double-ended threaded rod (501) is lower than the height of the second side plate (3) and the fixed side plate (2).

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