Detachable plate heat exchanger

Abstract

The invention discloses a detachable plate heat exchanger, and relates to the technical field of heat exchange, the detachable plate heat exchanger comprises a movable pressing plate, a fixed pressing plate and a plurality of plate sheets, the plurality of plate sheets are located between the movable pressing plate and the fixed pressing plate, a guide frame is fixedly inserted in the movable pressing plate, and the guide frame is fixedly inserted in the fixed pressing plate. The upper arm end and the lower arm end of the guide frame are fixedly inserted into the upper end and the lower end of the movable pressing plate correspondingly, the upper arm end and the lower arm end of the guide frame are slidably inserted into the upper end and the lower end of the fixed pressing plate correspondingly, the surface of the fixed pressing plate communicates with a pipe opening and a dismounting and mounting mechanism, and the dismounting and mounting mechanism is arranged at the top of a plate. The disassembling and assembling mechanism comprises connecting blocks fixedly connected to the tops of the plate sheets, the multiple plate sheets are slidably connected with the lower arm end of the guide frame, and every two connecting blocks form a group, so that the problem that the maintenance efficiency of the plate heat exchanger is affected due to the fact that the single-time maintenance period is long is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of heat exchange, and more specifically, to a detachable plate heat exchanger. Background Art

[0002] A plate heat exchanger is an efficient and compact heat exchange device that realizes heat transfer between two or more fluids through a series of parallel metal plates. These plates form narrow channels, and when the fluid flows through the channels, efficient heat exchange is carried out through the plates.

[0003] During the long-term operation of the plate heat exchanger, due to the precipitation and deposition effect of mineral components in the circulating medium, a dense scale layer will gradually form on the surface of the heat exchange plates. This will cause the cross-sectional area of the flow channel to decrease due to the thickening of the scale layer, resulting in an increase in the fluid flow resistance, causing the system pressure drop to exceed the design threshold, and the scale layer thermal resistance and the substrate thermal resistance of the plate form a composite thermal resistance system, resulting in a decrease in the overall heat transfer coefficient compared to the initial state and affecting the energy efficiency of the equipment. Therefore, it is necessary to disassemble and clean the plates on the plate heat exchanger. The traditional plate heat exchanger uses a fully bolted frame, and during maintenance, it is necessary to follow the operation mode of disassembling piece by piece, cleaning piece by piece, and reinstalling piece by piece, resulting in a relatively long single maintenance cycle and affecting the maintenance efficiency of the plate heat exchanger. Summary of the Invention

[0004] Aiming at the problems existing in the prior art, the purpose of the present invention is to provide a detachable plate heat exchanger to solve the problem of a relatively long single maintenance cycle and affecting the maintenance efficiency of the plate heat exchanger.

[0005] To solve the above problems, the present invention adopts the following technical solutions.

[0006] The detachable plate heat exchanger includes a movable pressing plate, a fixed pressing plate, and plates. The number of the plates is multiple, and the multiple plates are located between the movable pressing plate and the fixed pressing plate. A guide frame is fixedly inserted inside the movable pressing plate. The upper and lower arm ends of the guide frame are respectively fixedly inserted into the upper and lower ends inside the movable pressing plate, and the upper and lower arm ends of the guide frame are respectively slidably inserted into the upper and lower ends inside the fixed pressing plate. A pipe orifice and a disassembly and assembly mechanism are communicated with the surface of the fixed pressing plate. The disassembly and assembly mechanism is arranged on the top of the plates. The disassembly and assembly mechanism includes a connecting block fixedly connected to the top of the plates. The multiple plates are slidably connected to the lower arm end of the guide frame. The connecting blocks are grouped in pairs, and a first connecting plate and a second connecting plate are rotatably connected between every two adjacent groups of the connecting blocks. Accommodating grooves are formed on both side surfaces of the first connecting plate and the second connecting plate, and a separation spring is fixedly connected inside the accommodating grooves.

[0007] Further, both sides of the fixed pressing plate are fixedly connected with a plurality of pulling frames. One end of the two groups of pulling frames close to the movable pressing plate is fixedly connected with a pushing frame. One side of the movable pressing plate away from the fixed pressing plate is fixedly connected with a screw rod. A nut is threadedly sleeved on the surface of the screw rod, and the screw rod is inserted into the middle of the pushing frame.

[0008] Further, one end of the screw rod close to the movable pressing plate has no thread.

[0009] Further, one side of the movable pressing plate away from the fixed pressing plate is fixedly connected with two support plates. A rotating shaft is rotatably connected inside the support plates. A prying frame is fixedly connected to the surface of the rotating shaft, and a handle is fixedly connected to the top of the prying frame.

[0010] Further, the bottom of the prying frame is located in the middle of the pushing frame.

[0011] Further, a pushing block is rotatably connected to the bottom of the prying frame.

[0012] Further, a collar is fixedly sleeved on the surface of the rotating shaft. A plurality of tooth blocks are fixedly connected to the outer arc surface of the collar. An external support ring is sleeved on the surface of the rotating shaft. A plurality of clamping blocks are inserted into the inside of the external support ring. The cross-sectional shapes of the plurality of tooth blocks are all right-angled triangles, and the cross-sectional shape of the clamping block is a right-angled trapezoid.

[0013] Further, one end of each of the plurality of clamping blocks away from each other is fixedly connected with a return spring, and one end of each of the plurality of return springs away from each other is fixedly connected with the inner wall of the external support ring.

[0014] Further, a sliding sleeve is sleeved on the surface of the rotating shaft, and the sliding sleeve is fixedly connected with the surface of the external support ring.

[0015] Further, an abutting plate is fixedly connected to the outer arc surface of the external support ring, and the abutting plate is attached to one side of the movable pressing plate away from the fixed pressing plate.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: (1) In this solution, the folding structure composed of a plurality of first connecting plates and a plurality of second connecting plates can be unfolded by the separating spring, and at the same time, a plurality of plates are driven to separate from each other, so that the cross-sections of the plurality of plates can be exposed, facilitating the cleaning of the scale layer in the plates, without the need to disassemble and separate the plurality of plates one by one, improving the maintenance efficiency of the heat exchanger.

[0017] (2) In this solution, the levering frame can be used to push the movable pressing plate towards the fixed pressing plate, so that multiple plates can be pressed together. Then, the movable pressing plate can be fixed by a nut to complete the installation operation of the heat exchanger, without arranging and installing multiple plates sequentially, which further improves the maintenance efficiency of the heat exchanger.

[0018] (3) Through the cooperation of the tooth block and the clamping block in this solution, the rotation amplitude of the pushing frame can be maintained after it rotates, without continuously maintaining the rotation amplitude of the pushing frame, thus freeing the hands for the operation of turning the nut, which further improves the maintenance efficiency of the heat exchanger.

[0019] (4) In this solution, the pushing frame is used to move the movable pressing plate and its screw rod to a distance that is difficult to push by manpower. After that, the threaded section on the screw rod is closer to the pushing frame. Therefore, when using a nut to fix the movable pressing plate, the number of rotations of the nut can be reduced, thereby further improving the maintenance efficiency of the heat exchanger. Brief Description of the Drawings

[0020] Figure 1 is a schematic structural diagram of the present invention; Figure 2 is a schematic structural diagram of the side of the heat exchanger of the present invention; Figure 3 is a schematic structural diagram of the plate of the present invention; Figure 4 is of the present invention Figure 3 the enlarged view at A in; Figure 5 is a schematic structural diagram of the first connecting plate and the second connecting plate of the present invention; Figure 6 is a schematic structural diagram of the screw rod part of the present invention; Figure 7 is a schematic structural diagram of the levering frame part of the present invention; Figure 8 is a schematic structural diagram of the external support ring of the present invention; Figure 9 is a schematic structural diagram of the sliding sleeve of the present invention.

[0021] Explanation of the reference numerals in the drawings: 1. Movable pressing plate; 2. Fixed pressing plate; 3. Plate; 401. Pushing frame; 402. Guide frame; 403. Pulling frame; 404. First connecting plate; 405. Second connecting plate; 406. Connecting block; 407. Receiving groove; 408. Separation spring; 409. Prying frame; 410. Screw; 411. Nut; 412. Handle; 413. Support plate; 414. Pushing block; 415. Rotating shaft; 416. External support ring; 417. Block; 418. Return spring; 419. Tooth block; 420. Collar; 421. Abutting plate; 422. Sliding sleeve. Detailed implementation manner

[0022] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0023] Please refer to Figures 1-9 , a detachable plate heat exchanger, including a movable pressing plate 1, a fixed pressing plate 2 and a plate 3. The number of the plates 3 is multiple, and the multiple plates 3 are located between the movable pressing plate 1 and the fixed pressing plate 2. A guide frame 402 is fixedly inserted inside the movable pressing plate 1. The upper and lower arm ends of the guide frame 402 are fixedly inserted into the upper and lower ends of the inside of the movable pressing plate 1 respectively. The upper and lower arm ends of the guide frame 402 are slidably inserted into the upper and lower ends of the inside of the fixed pressing plate 2 respectively. A pipe orifice is communicated with the surface of the fixed pressing plate 2.

[0024] Among them, a disassembly and assembly mechanism is provided on the top of the plate 3. The disassembly and assembly mechanism includes a connecting block 406 fixedly connected to the top of the plate 3. The multiple plates 3 are slidably connected to the lower arm end of the guide frame 402. The connecting blocks 406 are grouped in pairs of two. A first connecting plate 404 and a second connecting plate 405 are rotatably connected between every two adjacent groups of the connecting blocks 406. During the process of the expansion of the multiple first connecting plates 404 and the multiple second connecting plates 405, the multiple plates 3 will be synchronously driven to separate from each other, so as to facilitate the cleaning of the scale layer in the plates 3. Receiving grooves 407 are opened on both side surfaces of the first connecting plate 404 and the second connecting plate 405. A separation spring 408 is fixedly connected inside the receiving groove 407. The folding structure composed of the multiple first connecting plates 404 and the multiple second connecting plates 405 can be pushed to expand by the separation spring 408. A plurality of pulling frames 403 are fixedly connected to both sides of the fixed pressing plate 2. One end of the two groups of pulling frames 403 close to the movable pressing plate 1 is fixedly connected with a pushing frame 401.

[0025] Among them, a screw rod 410 is fixedly connected to a surface of the movable pressing plate 1 away from the fixed pressing plate 2. A nut 411 is sleeved on a surface of the screw rod 410 in a threaded manner. The screw rod 410 is inserted into a middle part of the pushing frame 401. One end of the screw rod 410 close to the movable pressing plate 1 has no thread. After using the pushing frame 401 to make the threaded section on the screw rod 410 closer to the pushing frame 401, fixing the movable pressing plate 1 with the nut 411 can reduce the number of rotations of the nut 411, thereby further improving the maintenance efficiency of the heat exchanger. Two support plates 413 are fixedly connected to a surface of the movable pressing plate 1 away from the fixed pressing plate 2. A rotating shaft 415 is rotatably connected inside the support plate 413. A prying frame 409 is fixedly connected to a surface of the rotating shaft 415. Making a lower end of the prying frame 409 contact with the pushing frame 401 can move the movable pressing plate 1 in a direction close to the fixed pressing plate 2, pressing a plurality of plates 3 together. A handle 412 is fixedly connected to a top of the prying frame 409. The prying frame 409 can be moved in a direction close to the movable pressing plate 1 by pushing the handle 412. A bottom of the prying frame 409 is located in a middle part of the pushing frame 401. A pushing block 414 is rotatably connected to a bottom of the prying frame 409.

[0026] Among them, a collar 420 is fixedly sleeved on a surface of the rotating shaft 415. A plurality of tooth blocks 419 are fixedly connected to an outer arc surface of the collar 420. An outer support ring 416 is sleeved on a surface of the rotating shaft 415. A plurality of latch blocks 417 are inserted into an inside of the outer support ring 416. Cross-sectional shapes of the plurality of tooth blocks 419 are all right-angled triangles. A cross-sectional shape of the latch block 417 is a right-angled trapezoid. The cooperation between the tooth blocks 419 and the latch blocks 417 can keep a rotation amplitude of the prying frame 409 after rotation. One end of each of the plurality of latch blocks 417 away from each other is fixedly connected to a return spring 418. After the latch block 417 disengages from a corresponding tooth block 419, the return spring 418 can push it into two tooth blocks 419 of the next group. One end of each of the plurality of return springs 418 away from each other is fixedly connected to an inner wall of the outer support ring 416.

[0027] Among them, a sliding sleeve 422 is sleeved on a surface of the rotating shaft 415, enabling the sliding sleeve 422 and the outer support ring 416 to move on a surface of the rotating shaft 415. The outer support ring 416 can be sleeved on the collar 420 when needed and removed from the collar 420 when not needed. The sliding sleeve 422 is fixedly connected to a surface of the outer support ring 416. An abutting plate 421 is fixedly connected to an outer arc surface of the outer support ring 416. The abutting plate 421 is attached to a surface of the movable pressing plate 1 away from the fixed pressing plate 2, enabling the outer support ring 416 to only translate and not rotate.

[0028] By adopting the above technical solution, when cleaning the heat exchanger, the nut 411 is rotated to move it in the direction close to the movable pressing plate 1, so as to release the fixation of the movable pressing plate 1. And the separating spring 408 was in a compressed state before, so the separating spring 408 can push the corresponding adjacent first connecting plate 404 and second connecting plate 405 to rotate away from each other, and the folding structure composed of multiple first connecting plates 404 and multiple second connecting plates 405 can be unfolded. During the unfolding process of the multiple first connecting plates 404 and the multiple second connecting plates 405, the multiple plates 3 will also be driven to separate from each other synchronously, so that the cross-sections of the multiple plates 3 can be exposed, facilitating the cleaning of the scale layer in the plates 3, without the need to disassemble and separate the multiple plates 3 one by one, improving the maintenance efficiency of the heat exchanger.

[0029] After completing the cleaning and maintenance of the heat exchanger, it is necessary to reinstall and fasten the plates 3. At this time, the maintenance personnel can move the push handle 412 in the direction close to the movable pressing plate 1, so that the prying frame 409 rotates around the rotating shaft 415, and the lower end of the prying frame 409 can contact the push frame 401, and then the movable pressing plate 1 can be pushed to apply pressure in the direction close to the fixed pressing plate 2, so that the movable pressing plate 1 moves in the direction close to the fixed pressing plate 2. After pressing the multiple plates 3 together, the nut 411 is used to fix the position of the movable pressing plate 1, completing the installation operation of the heat exchanger, without the need to arrange and install the multiple plates 3 one by one, further improving the maintenance efficiency of the heat exchanger.

[0030] Before pushing the prying frame 409 to rotate, the sliding sleeve 422 and the external support ring 416 can be moved on the surface of the rotating shaft 415 until the external support ring 416 is sleeved on the collar 420 and the block 417 is located between the corresponding two tooth blocks 419. Since the tooth block 419 can be driven to rotate synchronously during the rotation of the prying frame 409, the tooth block 419 will squeeze the block 417 during this process, and then push the block 417 away from between the two tooth blocks 419. When the collar 420 rotates in the reverse direction, it will be stuck and unable to rotate, which can keep the rotation amplitude of the prying frame 409 after it rotates, without the need to always maintain the rotation amplitude of the prying frame 409, liberating both hands for the operation of rotating the nut 411, further improving the maintenance efficiency of the heat exchanger.

[0031] Usage method: First, rotate the nut 411 to move it in the direction close to the movable pressing plate 1, so as to release the fixation of the movable pressing plate 1, and the separating spring 408 pushes the multiple plates 3 to separate from each other, and then clean the plates 3; Then, sleeve the external support ring 416 on the collar 420, and the block 417 is located between the corresponding two tooth blocks 419; Next, by pushing the handle 412 in the direction close to the movable pressing plate 1, the prying frame 409 is made to push the movable pressing plate 1 in the direction close to the fixed pressing plate 2, pressing a plurality of plates 3 together; Finally, the nut 411 is rotated to fix the movable pressing plate 1, so that the separation spring 408 cannot push the movable pressing plate 1 to move due to the elastic force, thereby fixing the position of the movable pressing plate 1 and completing the installation operation of the heat exchanger.

[0032] The above is only a preferred specific embodiment of the present invention; however, the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its improved concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A detachable plate heat exchanger, comprising a movable pressing plate (1), a fixed pressing plate (2) and a plate (3), wherein the number of the plate (3) is plural, and the plural plates (3) are located between the movable pressing plate (1) and the fixed pressing plate (2), wherein a guide frame (402) is fixedly inserted inside the movable pressing plate (1), wherein the upper and lower arm ends of the guide frame (402) are respectively fixedly inserted inside the upper and lower ends of the movable pressing plate (1), wherein the upper and lower arm ends of the guide frame (402) are respectively slidably inserted inside the upper and lower ends of the fixed pressing plate (2), and a pipe opening is connected to the surface of the fixed pressing plate (2), characterized in that: A disassembly and assembly mechanism is arranged at the top of the plate (3), and comprises a connecting block (406) fixedly connected to the top of the plate (3); a plurality of the plates (3) are slidably connected to the lower arm end of the guide frame (402); the connecting blocks (406) are grouped in pairs, and a first connecting plate (404) and a second connecting plate (405) are rotatably connected between each two groups of adjacent connecting blocks (406); both sides of the first connecting plate (404) and the second connecting plate (405) are provided with a receiving groove (407), and a separation spring (408) is fixedly connected inside the receiving groove (407).

2. The detachable plate heat exchanger according to claim 1, characterized in that: A plurality of pulling frames (403) are fixedly connected to both sides of the fixed pressing plate (2); one end of the two groups of pulling frames (403) close to the movable pressing plate (1) is fixedly connected to a pushing frame (401); a side of the movable pressing plate (1) away from the fixed pressing plate (2) is fixedly connected to a screw rod (410); a nut (411) is threadedly sleeved on the surface of the screw rod (410); and the screw rod (410) is inserted into the middle of the pushing frame (401).

3. The detachable plate heat exchanger according to claim 2, characterized in that: One end of the screw rod (410) close to the movable pressing plate (1) has no thread.

4. The detachable plate heat exchanger according to claim 1, characterized in that: The movable clamping plate (1) is fixedly connected to one side away from the fixed clamping plate (2) with two support plates (413), the support plates (413) are rotatably connected to a rotating shaft (415) inside, the surface of the rotating shaft (415) is fixedly connected to a prying frame (409), and the top of the prying frame (409) is fixedly connected to a handle (412).

5. The detachable plate heat exchanger according to claim 4, characterized in that: The bottom of the prying frame (409) is located in the middle of the pushing frame (401).

6. The detachable plate heat exchanger according to claim 4, characterized in that: The bottom of the prying frame (409) is rotatably connected to a pushing block (414).

7. The detachable plate heat exchanger according to claim 4, characterized in that: A collar (420) is fixedly sleeved on the surface of the rotating shaft (415); a plurality of tooth blocks (419) are fixedly connected to the outer arc surface of the collar (420); an external support ring (416) is sleeved on the surface of the rotating shaft (415); a plurality of clamping blocks (417) are inserted inside the external support ring (416); the cross-sectional shapes of the plurality of tooth blocks (419) are all right-angled triangles; and the cross-sectional shape of the clamping blocks (417) is a right-angled trapezoid.

8. The detachable plate heat exchanger according to claim 7, characterized in that: One end of the plurality of clamping blocks (417) that is away from each other is fixedly connected to a return spring (418), and one end of the plurality of return springs (418) that is away from each other is fixedly connected to the inner wall of the external support ring (416).

9. The detachable plate heat exchanger according to claim 4, characterized in that: A sliding sleeve (422) is sleeved on the surface of the rotating shaft (415), and the sliding sleeve (422) is fixedly connected to the surface of the external support ring (416).

10. The detachable plate heat exchanger according to claim 7, characterized in that: The outer arc surface of the external support ring (416) is fixedly connected to an abutment plate (421), and the abutment plate (421) is in contact with a surface of the movable clamping plate (1) away from the fixed clamping plate (2).

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