Plate heat exchanger convenient to disassemble and overhaul

Abstract

The invention relates to the field of heat exchangers, in particular to a plate heat exchanger convenient to disassemble and overhaul, which comprises a plate heat exchanger body, and the plate heat exchanger body comprises a fixed end plate, a movable end plate, an upper guide rod, a lower guide rod, a bracket and a plate sheet; the movable end plate and the fixed end plate are connected through a plurality of bolts; the right end of the upper guide rod is detachably connected with the support, and one section of the right side of the upper guide rod can be overturned upwards to be disconnected with the support. The movable end plate comprises two semi-movable end plates, the two semi-movable end plates are rotationally connected and can be drawn close and folded, and an annular groove is formed in the upper guide rod; the support is provided with an abutting mechanism used for abutting against the two semi-movable end plates so that the two semi-movable end plates can be tightly attached to the sheet bar. According to the invention, the plate sheets are very convenient to disassemble and assemble and can be disassembled and assembled without inclining one by one, a plurality of nuts do not need to be screwed off during disassembly and assembly, and bolts do not need to be taken down, so that the operation time is further saved, and the disassembly efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of heat exchangers, and in particular to a plate heat exchanger which is easy to disassemble and repair. Background Art

[0002] Plate heat exchangers are highly efficient and compact heat exchange equipment, widely used in industries such as industry, HVAC, and food processing. During operation, hot and cold fluids pass through the narrow channels formed between the plates to exchange heat. Due to long-term operation, the plate heat exchanger will have varying degrees of dirt and sediment on the surface of the plates, which need to be cleaned irregularly. Blockages and damage may also occur, requiring disassembly and maintenance.

[0003] A Chinese patent with announcement number CN112146487B discloses a plate heat exchanger for a geothermal reinjection system that is easy to disassemble. By setting a heat exchanger assembly, a snap mechanism and a driving mechanism, the operating block is moved upward so that the movable rod drives the positioning plate to disengage from the restriction of the limit rod, and the limit rod can be pulled out of the placement groove. At the same time, the driving rod is rotated to pull the movable plate out of the clamping of the heat exchange plate body, which solves the problem that the cleaning of the heat exchange plate of a conventional heat exchanger requires the removal of multiple bolts in sequence, which is a time-consuming and labor-intensive process and affects the disassembly and cleaning efficiency of the heat exchange half plate.

[0004] However, the above-mentioned publicly available scheme has the following shortcomings: after the movable plate is moved and disassembled, the lateral size of the area where the plate is located can only be increased. If the plate needs to be removed for cleaning and maintenance, the plates need to be tilted one by one so that the plates can be disengaged from the upper and lower guide rods before they can be removed. The operation of removing the plates is relatively troublesome, and when reinstalling them, they also need to be inserted at an angle and then straightened one by one, which is also relatively cumbersome. Summary of the invention

[0005] The purpose of the present invention is to solve the problem that the installation and removal of plates in the background technology are relatively troublesome, and to provide a plate heat exchanger that is easy to disassemble and repair.

[0006] The technical solution of the present invention is as follows: a plate heat exchanger which is easy to disassemble and repair, comprising a plate heat exchanger body, the plate heat exchanger body comprising a fixed end plate, a movable end plate, an upper guide rod, a lower guide rod, a bracket and a plate; the movable end plate and the fixed end plate are connected by a plurality of bolts; the right end of the upper guide rod is detachably connected to the bracket, and a section of the right side of the upper guide rod can be flipped upward to disconnect it from the bracket, thereby leaving a gap for the plate to be directly taken out upward; the movable end plate comprises two semi-movable end plates, the two semi-movable end plates are rotatably connected and can be brought together and folded in half, an annular groove is provided on the upper guide rod, and after the two semi-movable end plates are brought together and folded in half, they move upward through the annular groove and then rotate 180 degrees around the axis of the upper guide rod to release the right side restriction of the plate; a tightening mechanism is provided on the bracket to hold the two semi-movable end plates against the plate.

[0007] Preferably, during disassembly, the two semi-movable end plates are flipped together and moved in the direction close to the bracket, and then the movable end plate enters the annular groove and moves upward to make the bottom of the movable end plate detach from the lower guide rod, and then the movable end plate is rotated one hundred and eighty degrees around the axis of the upper guide rod. At this time, the movable end plate is located above the upper guide rod, and then the right side section of the upper guide rod is folded upward. In this state, there is no restriction on the right side of the plate, and the plate can be pushed directly to the right and then quickly taken out from the gap left after the right side section of the upper guide rod is flipped and folded upward.

[0008] Preferably, the movable end plate includes a slip ring sleeved on the upper guide rod, a vertical rod vertically arranged at the bottom of the slip ring, and a plurality of rotating connectors arranged on the vertical rod; the plurality of rotating connectors are alternately connected to the two semi-movable end plates.

[0009] Preferably, the tightening mechanism includes a screw rod matched with the support thread, and a hand wheel and a limit plate arranged at both ends of the screw rod, and the limit plate is pressed against the two semi-movable end plates at the same time.

[0010] Preferably, a bolt slot for inserting a bolt is provided on the side surface of the fixed end plate, and a limiting mechanism is provided on the left side of the fixed end plate, and the limiting mechanism can adjust the bolt to make it move horizontally along the axial direction.

[0011] Preferably, the limiting mechanism includes a U-shaped plate arranged at the left end of the bolt, a mounting plate arranged at the two free ends of the U-shaped plate, and a manual clamping claw arranged on the mounting plate; when the manual clamping claw is locked, its clamping member presses against the fixed end plate to separate the mounting plate and the fixed end plate.

[0012] Preferably, a rotating shaft is horizontally and rotatably arranged at the right end of the upper guide rod, a connecting block is arranged on the rotating shaft, a movable column is arranged on the right side of the connecting block, a cylinder is sleeved on the movable column and the upper guide rod, and mutually matching threads are arranged on the outer circumference of the movable column and the upper guide rod and the inner circumference of the cylinder.

[0013] Preferably, a U-shaped frame is arranged on the right end surface of the movable column, the opening on the U-shaped frame faces downward, and the top of the bracket is inserted into the opening of the U-shaped frame.

[0014] Compared with the prior art, the present invention has the following beneficial technical effects: after the movable column is flipped upward and the movable end plate is rotated upward, there is no restriction on the right side of the plate, and the plate can be directly pushed to the right and then quickly taken out from the gap left after the movable column is flipped and folded upward; when reinstalling, the plate is also directly put into the gap and then pushed to the left. The disassembly and assembly of the plate is very convenient, and there is no need to tilt them one by one before disassembly and assembly, which saves time and effort. There is no need to unscrew multiple nuts or remove bolts during disassembly and assembly, which further saves operation time and improves disassembly efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1A schematic diagram of the structure of an embodiment of the present invention; Figure 2 for Figure 1 axonometric drawing; Figure 3 for Figure 2 Schematic diagram of the structure after removing the plate; Figure 4 for Figure 3 Schematic diagram of the structure after removing the cylinder; Figure 5 for Figure 4 Schematic diagram of some structures; Figure 6 for Figure 5 A is an enlarged schematic diagram.

[0016] Figure numerals: 1. fixed end plate; 2. movable end plate; 3. upper guide rod; 4. lower guide rod; 5. upper guide rod fixing plate; 6. lower guide rod fixing plate; 7. bracket; 8. bolt; 9. nut; 10. bolt slot; 11. plate; 12. connecting port; 13. connecting screw; 14. U-shaped plate; 15. mounting plate; 16. manual clamp; 17. clamping piece; 18. avoidance groove; 19. slip ring; 20. vertical rod; 21. rotating connecting piece; 22. semi-movable end plate; 23. screw; 24. hand wheel; 25. limit plate; 26. annular groove; 27. rotating shaft; 28. connecting block; 29. ​​movable column; 30. cylinder; 31. pull ring; 32. U-shaped frame; 33. limit bolt. DETAILED DESCRIPTION

[0017] Embodiment 1, as Figure 1-Figure 3As shown, the present invention proposes a plate heat exchanger that is easy to disassemble and repair, including a plate heat exchanger body, the plate heat exchanger body includes a fixed end plate 1, a movable end plate 2, an upper guide rod 3, a lower guide rod 4, a bracket 7 and a plate 11, four connecting ports 12 are arranged on the fixed end plate 1, the connecting ports 12 are used to connect to an external pipeline to achieve the inlet and outlet of hot and cold water, a plurality of connecting screws 13 are arranged around the connecting ports 12 on the fixed end plate 1, which are used to be connected to the flange of the external pipeline, the plate heat exchanger body is the prior art, that is, the upper guide rod 3 and the lower guide rod 4 are respectively arranged on the upper and lower sides of the fixed end plate 1, the upper guide rod 3 and the lower guide rod 4 are respectively connected to the fixed end plate 1 through the upper guide rod fixing plate 5 and the lower guide rod fixing plate 6, the movable end plate 2 is slidably matched with the upper guide rod 3 and the lower guide rod 4, and a plurality of plates 11 are arranged Between the fixed end plate 1 and the movable end plate 2, the bracket 7 is used to connect the other end of the upper guide rod 3 and the lower guide rod 4; the movable end plate 2 and the fixed end plate 1 are connected by multiple bolts 8; the right end of the upper guide rod 3 is detachably connected to the bracket 7, and a section of the right side of the upper guide rod 3 can be flipped upward to disconnect it from the bracket 7, thereby leaving a gap for the plate 11 to be directly taken out upward; the movable end plate 2 includes two semi-movable end plates 22, and the two semi-movable end plates 22 are rotatably connected and can be folded together. An annular groove 26 is provided on the upper guide rod 3. After the two semi-movable end plates 22 are folded together, they move upward through the annular groove 26 and then rotate 180 degrees around the axis of the upper guide rod 3 to release the right side restriction of the plate 11; a tightening mechanism is provided on the bracket 7, which is used to hold the two semi-movable end plates 22 close to the plate 11.

[0018] During disassembly, the two semi-movable end plates 22 are flipped together and moved in the direction close to the bracket 7, and then the movable end plate 2 enters the annular groove 26 and moves upward to make the bottom of the movable end plate 2 detach from the lower guide rod 4, and then the movable end plate 2 is rotated 180 degrees with the axis of the upper guide rod 3 as the center. At this time, the movable end plate 2 is located above the upper guide rod 3, and then the right side of the upper guide rod 3 is folded upward. In this state, there is no restriction on the right side of the plate 11, and the plate 11 can be directly pushed to the right and then quickly taken out from the gap left after the right side of the upper guide rod 3 is flipped and folded upward; when reinstalling, the plate 11 is also directly put into the gap and then pushed to the left. The disassembly and assembly of the plate 11 is very convenient, and there is no need to tilt them one by one for disassembly and assembly, which saves time and effort.

[0019] Embodiment 2, as Figure 2-Figure 3 As shown, the present invention proposes a plate heat exchanger that is easy to disassemble and repair. Compared with the first embodiment, this embodiment introduces the structure of the movable end plate 2 in detail.

[0020] The movable end plate 2 includes a slip ring 19 sleeved on the upper guide rod 3, a vertical rod 20 vertically arranged at the bottom of the slip ring 19, and a plurality of rotating connecting members 21 arranged on the vertical rod 20; the plurality of rotating connecting members 21 are alternately connected with the two semi-movable end plates 22, and the outer sides of the two movable end plates are provided with strip grooves for the insertion of bolts 8; nuts 9 are arranged on the bolts 8, and the nuts 9 are against the semi-movable end plates 22; after the semi-movable end plates 22 move a short distance to the right, the two semi-movable end plates 22 can move toward the right while shrinking, and when the slip ring 19 enters the annular groove, the entire movable end plate 2 can move upward for a distance so that its bottom is out of contact with the lower guide rod 4, and then the movable end plate 2 can be rotated upward as a whole, thereby exposing the space on the right side of the plate 11, and the plate 11 can directly move to the right as a whole; in order to facilitate the movement of the movable end plate 2 to the right, a pull ring 31 is arranged on the top of the vertical rod 20.

[0021] Embodiment three, as Figure 3 As shown, the present invention proposes a plate heat exchanger that is easy to disassemble and repair. Compared with the first embodiment, this embodiment introduces the structure of the tightening mechanism in detail.

[0022] In this embodiment, the tightening mechanism includes a screw rod 23 that is threadedly matched with the bracket 7, and a handwheel 24 and a limit plate 25 arranged at both ends of the screw rod 23, and the limit plate 25 is pressed against the two semi-movable end plates 22 at the same time; the limit plate 25 presses against the two semi-movable end plates 22, so that the two semi-movable end plates 22 cannot move to the right and thus rotate and move together. In an optional embodiment, the limit plate 25 is square or round, and the thread on the screw rod 23 is only present at the bracket 7, and the other positions are bare rods, which is convenient for rapid pulling to the right after rotating and moving a certain distance.

[0023] Embodiment 4, as Figure 5 and Figure 6 As shown, the present invention proposes a plate heat exchanger that is easy to disassemble and repair. Compared with the second embodiment, this embodiment introduces the limiting mechanism of the bolt 8 in detail.

[0024] A bolt slot 10 for inserting the bolt 8 is provided on the side of the fixed end plate 1, and a limiting mechanism is provided on the left side of the fixed end plate 1. The limiting mechanism can adjust the bolt 8 to make it move horizontally along the axial direction. The limiting mechanism includes a U-shaped plate 14 provided on the left end of the bolt 8, a mounting plate 15 provided on the two free ends of the U-shaped plate 14, and a manual clamping claw 16 provided on the mounting plate 15; when the manual clamping claw 16 is locked, its clamping member 17 abuts against the fixed end plate 1 to separate the mounting plate 15 from the fixed end plate 1, and an escape groove 18 for operating the manual clamping claw 16 is provided on the U-shaped plate 14. After the manual clamping claw 16 is released, the clamping member 17 moves away from the fixed end plate 1 to the left, and the U-shaped plate 14 and the bolt 8 can move to the right at this time. After the bolt 8 moves to the right, after contacting the limit of the abutting mechanism, the two semi-movable end plates 22 can move to the right and move inward, so that the semi-movable end plates 22 are separated from the bolt 8 and the nut 9.

[0025] Embodiment 5, as Figure 3-Figure 4 As shown, the present invention proposes a plate heat exchanger that is easy to disassemble and repair. Compared with the fourth embodiment, this embodiment introduces the structure of the upper guide rod 3 in detail.

[0026] A rotating shaft 27 is horizontally and rotatably set at the right end of the upper guide rod 3, a connecting block 28 is set on the rotating shaft 27, and a movable column 29 is set on the right side of the connecting block 28. A cylinder 30 is sleeved on the movable column 29 and the upper guide rod 3, and the outer circumferential surfaces of the movable column 29 and the upper guide rod 3 and the inner circumferential surface of the cylinder 30 are all provided with mutually matching threads; when the cylinder 30 is sleeved on the movable column 29 and the upper guide rod 3 at the same time, the movable column 29 and the upper guide rod 3 are coaxial, and when the cylinder 30 rotates and moves onto the movable column 29, the movable column 29 can be flipped upward, thereby leaving a gap between it and the bracket 7 for the plate 11 to be quickly taken out or inserted. In order to facilitate the rotation of the cylinder 30, two symmetrical handles are set on the outer wall of the cylinder 30. A U-shaped frame 32 is arranged on the right end surface of the movable column 29, and the opening on the U-shaped frame 32 faces downward, and the top of the bracket 7 is inserted into the opening of the U-shaped frame 32, a threaded hole is arranged on the U-shaped frame 32, and a blind hole opposite to the threaded hole is arranged on the bracket 7. The end of the limiting bolt 33 is a bare rod, and the limiting bolt 33 passes through the threaded hole and is inserted into the blind hole to complete the connection between the U-shaped frame 32 and the bracket 7. When disassembly is required, the movable column 29 can be flipped upward after loosening the limiting bolt 33.

[0027] In summary, when disassembly is required, the locking state of the manual clamp 16 is released, the hand wheel 24 is turned to move the limit plate 25 to contact the bracket 7, and then the movable end plate 2 is pulled to the right, and the two semi-movable end plates 22 are flipped together and moved in the direction close to the bracket 7, and the movable end plate 2 gradually separates from the bolt 8 and the nut 9, and then the movable end plate 2 enters the annular groove 26 and moves upward to separate the bottom of the movable end plate 2 from the lower guide rod 4, and then the movable end plate 2 is rotated 180 degrees with the axis of the upper guide rod 3 as the center, and the movable end plate 2 is located above the upper guide rod 3, and then the cylinder The body 30 rotates and moves to the right, and then the movable column 29 is folded upward. In this state, there is no restriction on the right side of the plate 11, and the plate 11 can be directly pushed to the right and then quickly taken out from the gap left after the movable column 29 is flipped up; when reinstalling, the plate 11 is also directly put into the gap and then pushed to the left. The disassembly and assembly of the plate 11 is very convenient, and there is no need to tilt them one by one for disassembly and assembly, which saves time and effort. There is no need to unscrew multiple nuts 9 or remove bolts 8 during disassembly and assembly, which further saves operation time and improves disassembly efficiency.

[0028] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto, and various changes can be made within the knowledge scope of technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A plate heat exchanger that is easy to disassemble and repair, comprising a plate heat exchanger body, wherein the plate heat exchanger body comprises a fixed end plate (1), a movable end plate (2), an upper guide rod (3), a lower guide rod (4), a bracket (7) and a plate (11); characterized in that: The movable end plate (2) and the fixed end plate (1) are connected by a plurality of bolts (8); the right end of the upper guide rod (3) is detachably connected to the bracket (7); a right section of the upper guide rod (3) can be flipped upward to be disconnected from the bracket (7), thereby leaving a gap for the plate (11) to be directly taken out upward; the movable end plate (2) comprises two semi-movable end plates (22); the two semi-movable end plates (22) are rotatably connected and can be brought together and folded; an annular groove (26) is provided on the upper guide rod (3); after the two semi-movable end plates (22) are brought together and folded, they move upward through the annular groove (26) and then rotate 180 degrees around the axis of the upper guide rod (3) to release the restriction on the right side of the plate (11); a tightening mechanism is provided on the bracket (7) for pressing the two semi-movable end plates (22) to make them close to the plate (11).

2. The plate heat exchanger that is easy to disassemble and repair according to claim 1 is characterized in that: During disassembly, the two semi-movable end plates (22) are turned over and moved together in the direction close to the bracket (7), and then the movable end plate (2) enters the annular groove (26) and moves upward to make the bottom of the movable end plate (2) detach from the lower guide rod (4). Then, the movable end plate (2) is rotated 180 degrees around the axis of the upper guide rod (3). At this time, the movable end plate (2) is located above the upper guide rod (3), and then the right side of the upper guide rod (3) is folded upward. In this state, there is no restriction on the right side of the plate (11), and the plate (11) can be directly pushed to the right and then directly and quickly removed from the gap left after the right side of the upper guide rod (3) is turned up.

3. The plate heat exchanger that is easy to disassemble and repair according to claim 1 is characterized in that: The movable end plate (2) comprises a slip ring (19) sleeved on an upper guide rod (3), a vertical rod (20) vertically arranged at the bottom of the slip ring (19), and a plurality of rotating connecting members (21) arranged on the vertical rod (20); the plurality of rotating connecting members (21) are alternately connected to the two semi-movable end plates (22).

4. The plate heat exchanger that is easy to disassemble and repair according to claim 1 is characterized in that: The tightening mechanism comprises a screw rod (23) threadably matched with the bracket (7), and a hand wheel (24) and a limit plate (25) arranged at both ends of the screw rod (23), wherein the limit plate (25) is pressed against the two semi-movable end plates (22) at the same time.

5. The plate heat exchanger that is easy to disassemble and repair according to claim 1 is characterized in that: A bolt slot (10) for inserting a bolt (8) is provided on the side of the fixed end plate (1), and a limit mechanism is provided on the left side of the fixed end plate (1). The limit mechanism can adjust the bolt (8) to move horizontally along the axial direction.

6. The plate heat exchanger that is easy to disassemble and repair according to claim 5 is characterized in that: The limiting mechanism comprises a U-shaped plate (14) arranged at the left end of the bolt (8), a mounting plate (15) arranged at two free ends of the U-shaped plate (14), and a manual clamping claw (16) arranged on the mounting plate (15); when the manual clamping claw (16) is in a locked state, its clamping member (17) abuts against the fixed end plate (1) to separate the mounting plate (15) from the fixed end plate (1).

7. The plate heat exchanger that is easy to disassemble and repair according to claim 1 is characterized in that: A rotating shaft (27) is horizontally and rotatably arranged at the right end of the upper guide rod (3), a connecting block (28) is arranged on the rotating shaft (27), a movable column (29) is arranged on the right side of the connecting block (28), a cylinder (30) is sleeved on the movable column (29) and the upper guide rod (3), and threads that cooperate with each other are arranged on the outer circumferences of the movable column (29) and the upper guide rod (3) and the inner circumference of the cylinder (30).

8. The plate heat exchanger that is easy to disassemble and repair according to claim 7 is characterized in that: A U-shaped frame (32) is arranged on the right end surface of the movable column (29), the opening on the U-shaped frame (32) faces downward, and the top of the bracket (7) is inserted into the opening of the U-shaped frame (32).

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