Spiral plate heat exchanger, heat exchange device and heat exchange method for viscous fluid

Abstract

The invention relates to the technical field of boiler energy-saving auxiliary equipment, in particular to a spiral plate heat exchanger, a heat exchange device and a heat exchange method for viscous fluid, and the spiral plate heat exchanger for the viscous fluid comprises a frame body and a heat exchanger body installed on the frame body; the heat exchanger body is provided with a first inlet, a first outlet, a second inlet and a second outlet, and two media enter the heat exchanger body through the first inlet and the second inlet to complete heat exchange and are discharged from the first outlet and the second outlet. The heat exchange function and the filtering function are integrated, the production process is simplified, the disc provided with the two filtering areas is used, during work, the two filtering areas are used for treating a medium in turn, and when the filtering areas are blocked, the elastic triggering mechanism can trigger movement, so that the synchronous follow-up mechanism drives the disc to rotate by a half circle, and the filtering efficiency is improved. The positions of the two filtering areas are exchanged, and then the blocked filtering area is cleaned by the backflushing mechanism.

Description

Technical Field

[0001] The invention relates to the technical field of boiler energy-saving auxiliary equipment, and in particular to a spiral plate heat exchanger, a heat exchange device and a heat exchange method for viscous fluids. Background Art

[0002] The spiral plate heat exchanger is a highly efficient heat exchange device, and its working principle is based on heat transfer and fluid mechanics. It achieves efficient heat exchange by arranging the heat transfer surface in a spiral.

[0003] Spiral plate heat exchangers perform well in handling high-viscosity liquids, suspensions, and fluids containing solid particles. In actual use, in order to prevent fibrous materials from entering the heat exchanger and causing blockage in the flow channel, pre-filtration is a necessary step before the heat exchange medium is passed into the heat exchanger to ensure its efficient operation and avoid maintenance problems.

[0004] As mentioned above, before working, the medium needs to be pre-filtered. Therefore, after the pre-filtration of the medium is completed, it needs to be transferred from the filter device to the heat exchanger. The transfer process may cause secondary contamination of the medium, and also complicate the production process. Moreover, general filter devices often need to be shut down for maintenance when blockage occurs, which is difficult to avoid, delays the production progress, and makes it difficult to achieve the ideal use effect. Summary of the invention

[0005] The object of the present invention is to provide a spiral plate heat exchanger, a heat exchange device and a heat exchange method for viscous fluids to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A spiral plate heat exchanger for viscous fluids, comprising a frame and a heat exchanger body mounted on the frame;

[0008] The heat exchanger body is provided with a first inlet, a first outlet, a second inlet and a second outlet. Two media enter the interior of the heat exchanger body through the first inlet and the second inlet respectively to complete heat exchange, and are discharged from the first outlet and the second outlet respectively.

[0009] The spiral plate heat exchanger for viscous fluids also includes:

[0010] An assembly plate is fixed on the frame, a disc is rotatably mounted on the assembly plate, and two filtering areas are symmetrically arranged on the disc about a circle point, a third cylinder is fixedly mounted on the assembly plate through a third conduit, a fourth cylinder is mounted on the first inlet, the disc is located between the third cylinder and the fourth cylinder, and the third cylinder and the fourth cylinder are sealed and slidably fitted with the disc to form a conveying passage for the medium;

[0011] The elastic trigger mechanism is installed on the third cylinder, is triggered when the filtering area is blocked, and can drive the synchronous follower mechanism installed on the frame to move. The synchronous follower mechanism can drive the disc to rotate so that the positions of the two filtering areas are exchanged.

[0012] As a further solution of the present invention: the elastic trigger mechanism includes an elastic telescopic structure installed on the third cylinder and an ejection assembly connected to the elastic telescopic structure, and the ejection assembly is installed on the third guide tube and connected to the synchronous follower mechanism.

[0013] As a further solution of the present invention: the elastic telescopic structure comprises a cylindrical pipe fixed on the third cylinder and connected to the third cylinder, and a driven rod slidably sleeved with the cylindrical pipe, and the driven rod is fixed to a piston sealingly slidably arranged in the cylindrical pipe;

[0014] The end of the driven rod away from the piston is connected to the ejection assembly, and a first cylindrical spring is sleeved on the outer periphery of the driven rod, and the two ends of the first cylindrical spring are respectively connected to the inner wall of the cylindrical pipe and the piston.

[0015] As a further solution of the present invention: the ejection assembly includes a sleeve slidably sleeved on the third guide tube and connected to the driven rod through a connecting rod, one end of the connecting rod is hinged to the sleeve, and the other end is hinged to an end of the driven rod away from the piston, a lug is fixedly provided on the sleeve, a vertical rod is slidably provided on the lug, and a round table is fixed on the vertical rod;

[0016] The outer periphery of the vertical rod is sleeved with a second cylindrical spring with two ends respectively connected to the truncated cone and the lug; one end of the vertical rod is connected to a limiting structure, and the other end is connected to the synchronous follower mechanism.

[0017] As a further solution of the present invention: the limiting structure includes a limiting plate connected to the recoil mechanism, the limiting plate is provided with a slot body adapted to the vertical rod, the upper end of the vertical rod extends into the slot body and is slidably connected to the limiting plate;

[0018] The slot body includes a first slot section, a second slot section, a third slot section, a fourth slot section and a fifth slot section which are connected to each other. The fifth slot section is inclined, and one end of the fifth slot section away from the fourth slot section is connected to the connection between the first slot section and the second slot section. A movable part is also rotatably provided on the limiting plate and is located at the end of the fifth slot section away from the fourth slot section. A torsion spring is connected to the rotating shaft of the movable part, and the movable part can and can only swing toward the first slot section and the second slot section.

[0019] As a further solution of the present invention: the synchronous follow-up mechanism includes a transmission frame arranged on the frame body and a one-way transmission structure connecting the transmission frame and the disc rotating shaft, the transmission frame includes a slide plate slidably arranged on the frame body, two support arms fixed on the slide plate and a slider slidably arranged on the two support arms, and the slider is fixed to the vertical rod through a connecting arm.

[0020] As a further solution of the present invention: the one-way transmission structure includes a ratchet plate fixedly mounted on the skateboard via two fixed arms and a ratchet wheel rotatably mounted on the frame, and the rotating axes of the ratchet wheel and the disc are connected via a transmission belt.

[0021] As a further solution of the present invention: the recoil mechanism comprises a first conduit and a second conduit fixedly mounted on the assembly plate, and a first cylinder and a second cylinder respectively fixedly connected to the first conduit and the second conduit, the disc is located between the first cylinder and the second cylinder, and the first cylinder and the second cylinder are sealingly and slidably fitted with the disc;

[0022] The limiting plate is fixedly mounted on the second conduit via two fastening arms, a pump body is also mounted on the assembly plate, and one end of the first conduit away from the first cylinder is connected to the water outlet of the pump body.

[0023] A heat exchange device comprises the spiral plate heat exchanger for viscous fluid.

[0024] A heat exchange method for viscous fluid, using the heat exchange device, comprises the following steps:

[0025] Step 1: two media enter the heat exchanger body from the first inlet and the second inlet respectively to exchange heat, and are discharged from the first outlet and the second outlet respectively;

[0026] Step 2: The filter area on the disc filters out the fibrous material in the medium;

[0027] Step 3: When the filter area is blocked, the elastic trigger mechanism moves, prompting the synchronous follower mechanism to drive the disc to rotate, and the two filter areas are swapped to restore the smooth state of the medium conveying passage;

[0028] Step 4: The recoil mechanism works to impact the filtered matter that is blocked in the filter area and restore the smooth flow of the filter area.

[0029] Compared with the prior art, the present invention has the following beneficial effects:

[0030] The present application integrates the heat exchange and filtering functions, simplifies the production process, and uses a disc with two filtering areas. When working, the two filtering areas process the medium in turn;

[0031] Specifically, whenever there is a blockage in the filter area, the elastic trigger mechanism can trigger the movement, so that the synchronous follower mechanism drives the disc to rotate half a circle, so that the two filter areas exchange positions, and then the recoil mechanism cleans the blocked filter area;

[0032] The position exchange of the two filter areas is automatically performed according to the blockage situation through mechanical interlocking, without the need for staff to stop the machine for maintenance, which not only ensures the production progress but also saves the manual operation steps;

[0033] In addition, the rotation of the disc is performed when the second cylindrical spring rebounds. The rebound process of the second cylindrical spring is rapid, thereby improving the timeliness of switching the medium conveying passage from a blocked state to a smooth state. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 The present invention is a schematic structural diagram of an embodiment of a spiral plate heat exchanger for viscous fluids.

[0035] Figure 2 This is a schematic structural diagram from another angle of an embodiment of a spiral plate heat exchanger for viscous fluids.

[0036] Figure 3 A schematic structural diagram of a spiral plate heat exchanger for viscous fluids from another angle according to an embodiment of the present invention.

[0037] Figure 4 A schematic structural diagram of an embodiment of a spiral plate heat exchanger for viscous fluids from another angle.

[0038] Figure 5 The figure is a schematic diagram of the structure of a frame in one embodiment of a spiral plate heat exchanger for viscous fluids.

[0039] Figure 6 It is a structural explosion diagram of the elastic trigger mechanism in one embodiment of a spiral plate heat exchanger for viscous fluids.

[0040] Figure 7The figure is a schematic diagram of the structure of a recoil mechanism in one embodiment of a spiral plate heat exchanger for viscous fluids.

[0041] Figure 8 It is a structural exploded diagram of the synchronous follower mechanism in one embodiment of a spiral plate heat exchanger for viscous fluids.

[0042] Fig. 9 for Figure 4 A magnified view of the structure at center.

[0043] Fig.10 for Figure 7 A magnified view of the structure at point B.

[0044] In the figure: 1, frame; 2, heat exchanger body; 201, first inlet; 202, first outlet; 203, second inlet; 204, second outlet; 3, assembly plate; 4, pump body; 5, first conduit; 6, first cylinder; 7, second cylinder; 8, second conduit; 9, disc; 901, filter area; 10, third conduit; 11, third cylinder; 12, fourth cylinder; 13, first cylindrical spring; 14, cylindrical pipe; 15, driven rod; 16, piston; 17, connecting rod ; 18. sleeve; 1801. lug; 19. second cylindrical spring; 20. vertical rod; 2001. truncated table; 21. limiting plate; 2101. first slot section; 2102. second slot section; 2103. third slot section; 2104. fourth slot section; 2105. fifth slot section; 22. movable part; 23. slide plate; 2301. support arm; 24. slider; 25. connecting arm; 26. fixed arm; 27. transmission belt; 28. ratchet plate; 29. ​​ratchet; 30. fastening arm. DETAILED DESCRIPTION

[0045] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0046] In addition, when an element in the present invention is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only embodiment.

[0047] See also Figure 1-Figure 10In an embodiment of the present invention, a spiral plate heat exchanger for viscous fluids includes a frame 1 and a heat exchanger body 2 mounted on the frame 1;

[0048] The heat exchanger body 2 is provided with a first inlet 201, a first outlet 202, a second inlet 203 and a second outlet 204. The two media enter the heat exchanger body 2 through the first inlet 201 and the second inlet 203 to complete heat exchange, and are discharged from the first outlet 202 and the second outlet 204 respectively.

[0049] The spiral plate heat exchanger for viscous fluids also includes:

[0050] An assembly plate 3 is fixed on the frame 1, a disc 9 is rotatably mounted on the assembly plate 3, and two filtering areas 901 are symmetrically arranged on the disc 9 about a circle point, a third cylinder 11 is fixedly mounted on the assembly plate 3 through a third conduit 10, a fourth cylinder 12 is mounted on the first inlet 201, the disc 9 is located between the third cylinder 11 and the fourth cylinder 12, and the third cylinder 11 and the fourth cylinder 12 are sealed and slidably fitted with the disc 9 to form a conveying passage for the medium;

[0051] The elastic trigger mechanism is installed on the third cylinder 11, and is triggered when the filtering area 901 is blocked, and can drive the synchronous follower mechanism installed on the frame 1 to move. The synchronous follower mechanism can drive the disc 9 to rotate so that the positions of the two filtering areas 901 are exchanged.

[0052] Furthermore, the heat exchanger body 2 is an application of the prior art, and has two spiral channels made of two parallel metal plate rolls inside. When working, the two media can enter the two spiral channels from the first inlet 201 and the second inlet 203 respectively to complete the heat exchange, and then be discharged through the first outlet 202 and the second outlet 204 respectively. The specific structure and heat exchange principle are not described in detail in this application.

[0053] Specifically, during operation, the medium passes through the third conduit 10 and the third cylinder 11, and then enters the interior of the heat exchanger body 2 after being filtered through the filter area 901 located between the third cylinder 11 and the fourth cylinder 12;

[0054] When the filter area 901 between the third cylinder 11 and the fourth cylinder 12 is blocked, the elastic trigger mechanism triggers the movement and drives the synchronous follower mechanism to move, so that the synchronous follower mechanism drives the disc 9 to rotate 180°, so that the two filter areas 901 are swapped, and accordingly, the filter area 901 in the unblocked state is deflected to between the third cylinder 11 and the fourth cylinder 12, so that the medium conveying passage is restored to be unblocked, and the filter area 901 in the blocked state is deflected to the position corresponding to the recoil mechanism;

[0055] Then, the recoil mechanism works to flush water into the clogged filter area 901 , and the water flow direction is opposite to the medium conveying direction. Therefore, under the impact of the water flow, the blockage on the filter area 901 can be flushed away, and the filter area 901 can be restored to be unobstructed.

[0056] Please refer again Figure 6 The elastic trigger mechanism includes an elastic telescopic structure installed on the third cylinder 11 and an ejection assembly connected to the elastic telescopic structure, and the ejection assembly is installed on the third conduit 10 and connected to the synchronous follower mechanism. The elastic telescopic structure includes a cylindrical pipe 14 fixed on the third cylinder 11 and connected to the third cylinder 11, and a driven rod 15 slidably fitted with the cylindrical pipe 14, and the driven rod 15 is fixed to a piston 16 sealingly and slidably arranged in the cylindrical pipe 14. The end of the driven rod 15 away from the piston 16 is connected to the ejection assembly, and the outer periphery of the driven rod 15 is also sleeved with a first cylindrical spring 13, and the two ends of the first cylindrical spring 13 are respectively connected to the inner wall of the cylindrical pipe 14 and the piston 16.

[0057] During operation, when the filter area 901 between the third cylinder 11 and the fourth cylinder 12 is blocked, the medium can no longer pass through the filter area 901 smoothly, so the medium applies pressure to the piston 16, causing the piston 16 to slide in the cylindrical pipe 14. Specifically, the piston 16 drives the driven rod 15 to gradually slide toward the outside of the cylindrical pipe 14, and the first cylindrical spring 13 is compressed.

[0058] It should be supplemented that a plurality of air vents (not numbered in the figure) are provided at the bottom end of the cylindrical pipe 14 to prevent the piston 16 from being affected in its normal movement due to the airtightness between the piston 16 and the bottom wall of the cylindrical pipe 14 .

[0059] The ejection assembly includes a sleeve 18 that is slidably sleeved on the third conduit 10 and connected to the driven rod 15 through the connecting rod 17. One end of the connecting rod 17 is hinged to the sleeve 18, and the other end is hinged to the end of the driven rod 15 away from the piston 16. A lug 1801 is fixedly provided on the sleeve 18, and a vertical rod 20 is slidably provided on the lug 1801, and a round table 2001 is fixed on the vertical rod 20. A second cylindrical spring 19 with two ends respectively connected to the round table 2001 and the lug 1801 is sleeved on the outer periphery of the vertical rod 20. One end of the vertical rod 20 is connected to a limiting structure, and the other end is connected to the synchronous follower mechanism.

[0060] Please refer again Fig.10 The limiting structure includes a limiting plate 21 connected to the recoil mechanism, and a slot body adapted to the vertical rod 20 is provided on the limiting plate 21, and the upper end of the vertical rod 20 extends into the slot body and is slidably connected to the limiting plate 21. The slot body includes a first slot section 2101, a second slot section 2102, a third slot section 2103, a fourth slot section 2104 and a fifth slot section 2105 connected to each other, and the fifth slot section 2105 is inclined, and the end of the fifth slot section 2105 away from the fourth slot section 2104 is connected to the connection between the first slot section 2101 and the second slot section 2102. The limiting plate 21 is also rotatably provided with a movable member 22 located at the end of the fifth slot section 2105 away from the fourth slot section 2104, and the rotating shaft of the movable member 22 is connected with a torsion spring, and the movable member 22 can and can only swing toward the first slot section 2101 and the second slot section 2102.

[0061] Specifically, during operation, as the amount of filtered matter on the filter area 901 increases, the impact pressure of the medium on the piston 16 gradually increases, that is, the sliding displacement of the piston 16 in the cylindrical pipe 14 gradually increases;

[0062] Furthermore, when the piston 16 drives the driven rod 15 to slide toward the outside of the cylindrical pipe 14 in the cylindrical pipe 14, the driven rod 15 drives the sleeve 18 to slide on the third guide tube 10 close to the third cylinder 11 through the connecting rod 17. Accordingly, the upper end of the vertical rod 20 moves along the first slot section 2101 and the second slot section 2102 toward the third slot section 2103. When the vertical rod 20 passes through the intersection of the first slot section 2101, the second slot section 2102 and the fifth slot section 2105, the movable member 22 can limit the vertical rod 20 to prevent the second cylindrical spring 19 from rebounding.

[0063] When the sliding amount of the piston 16 reaches a specific value, it indicates that the filtration area 901 between the third cylinder 11 and the fourth cylinder 12 is seriously blocked and may affect the medium transportation. Accordingly, the upper end of the vertical rod 20 reaches the intersection of the second slot section 2102 and the third slot section 2103, and then the second cylindrical spring 19 rebounds, prompting the vertical rod 20 to move up quickly, and the upper end of the vertical rod 20 is transferred along the third slot section 2103 to the intersection of the third slot section 2103 and the fourth slot section 2104. During this process, the lower end of the vertical rod 20 drives the synchronous follower mechanism to move, and the synchronous follower mechanism drives the disc 9 to complete a 180° rotation, so that the positions of the two filtration areas 901 are exchanged, thereby achieving the effect of automatically and quickly restoring the smooth flow of the medium transportation passage.

[0064] After the medium passage is restored to be unobstructed, the first cylindrical spring 13 can rebound, so that the medium entering the cylindrical pipe 14 is pushed back into the third cylinder 11. Accordingly, the driven rod 15 drives the sleeve 18 to slide on the third guide tube 10 away from the third cylinder 11 through the connecting rod 17. Accordingly, the upper end of the vertical rod 20 moves along the fourth slot section 2104 and the fifth slot section 2105, and when the vertical rod 20 moves along the fifth slot section 2105, it slides with the limiting plate 21, and the vertical rod 20 gives way and moves downward, and the second cylindrical spring 19 restores the compressed state. Subsequently, the vertical rod 20 causes the movable part 22 to deflect toward the first slot section 2101 and the second slot section 2102, the torsion spring is deformed, and the vertical rod 20 moves and resets along the first slot section 2101 away from the second slot section 2102. The torsion spring rebounds and the movable part 22 resets.

[0065] Please refer again Figure 2 , Figure 8 as well as Fig. 9 The synchronous follower mechanism includes a transmission frame arranged on the frame body 1 and a one-way transmission structure connecting the transmission frame and the rotating shaft of the disk 9. The transmission frame includes a slide plate 23 slidably arranged on the frame body 1, two support arms 2301 fixed on the slide plate 23, and a slider 24 slidably arranged on the two support arms 2301. The slider 24 is fixed to the vertical rod 20 through a connecting arm 25. The one-way transmission structure includes a ratchet plate 28 fixedly mounted on the slide plate 23 through two fixed arms 26 and a ratchet wheel 29 rotatably mounted on the frame body 1. The rotating shafts of the ratchet wheel 29 and the disk 9 are connected through a transmission belt 27.

[0066] When the driven rod 15 drives the sleeve 18 to slide on the third conduit 10 through the connecting rod 17, the vertical rod 20 drives the slider 24 to slide on the two supporting arms 2301 through the connecting arm 25;

[0067] Furthermore, when the upper end of the vertical rod 20 reaches the intersection of the second slot section 2102 and the third slot section 2103, and the second cylindrical spring 19 rebounds, the vertical rod 20 can drive the slide plate 23 to slide upward on the frame 1 through the connecting arm 25, the slider 24 and the two support arms 2301. Correspondingly, the ratchet plate 28 rises together with the slide plate 23, and the ratchet teeth on the ratchet plate 28 cooperate with the ratchet wheel 29 to cause the ratchet wheel 29 to rotate. The rotating shaft of the ratchet wheel 29 can drive the disc 9 to rotate 180° through the transmission belt 27, so that the positions of the two filtering areas 901 are swapped.

[0068] After the medium passage is restored to be unobstructed, the first cylindrical spring 13 rebounds, causing the upper end of the vertical rod 20 to pass through the fourth slot section 2104, the fifth slot section 2105 and the first slot section 2101 during the reset process. The vertical rod 20 drives the slide plate 23 to slide downward on the frame 1 to reset. At this time, the ratchet on the ratchet plate 28 deflects when passing through the ratchet wheel 29, and cannot drive the ratchet wheel 29 to rotate, thereby preventing the disc 9 from rotating in the opposite direction to reset.

[0069] Please refer again Figure 7 The recoil mechanism comprises a first conduit 5 and a second conduit 8 fixedly mounted on the assembly plate 3, and a first cylinder 6 and a second cylinder 7 respectively fixedly connected to the first conduit 5 and the second conduit 8, the disc 9 is located between the first cylinder 6 and the second cylinder 7, and the first cylinder 6 and the second cylinder 7 are sealed and slidably fitted with the disc 9;

[0070] The limiting plate 21 is fixedly mounted on the second conduit 8 via two fastening arms 30 , a pump body 4 is also mounted on the assembly plate 3 , and one end of the first conduit 5 away from the first cylinder 6 is connected to the water outlet of the pump body 4 .

[0071] Whenever the disc 9 completes a 180° rotation, the filter area 901 that is clogged is switched between the first cylinder 6 and the second cylinder 7. Then, the pump body 4 starts to work and pumps water into the first conduit 5. The water flow then backflushes the filter area 901. The water flow carries the clogged objects through the second conduit 8 and is transported to the recovery end to clean the filter area 901.

[0072] As another embodiment of the present invention, a heat exchange device is also proposed, and the heat exchange device includes the spiral plate heat exchanger for viscous fluid.

[0073] As another embodiment of the present invention, a heat exchange method for viscous fluid is also proposed, using the heat exchange device, comprising the following steps:

[0074] Step 1: The two media enter the heat exchanger body 2 from the first inlet 201 and the second inlet 203 respectively to exchange heat, and are discharged from the first outlet 202 and the second outlet 204 respectively;

[0075] Step 2: The filter area 901 on the disc 9 filters out the fibrous substances in the medium;

[0076] Step 3: When the filter area 901 is blocked, the elastic trigger mechanism moves, prompting the synchronous follower mechanism to drive the disc 9 to rotate, and the two filter areas 901 are swapped to restore the smooth state of the medium conveying passage;

[0077] Step 4: The backflushing mechanism works to impact the filtered matter that is blocked in the filter area 901 , thereby restoring the unblocked state of the filter area 901 .

[0078] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0079] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A spiral plate heat exchanger for viscous fluids, comprising a frame (1) and a heat exchanger body (2) mounted on the frame (1); in, The heat exchanger body (2) is provided with a first inlet (201), a first outlet (202), a second inlet (203) and a second outlet (204); two media enter the interior of the heat exchanger body (2) through the first inlet (201) and the second inlet (203) respectively to complete heat exchange, and are discharged from the first outlet (202) and the second outlet (204) respectively; It is characterized by further comprising: An assembly plate (3) is fixed on the frame (1), a disc (9) is rotatably mounted on the assembly plate (3), and two filtering areas (901) are symmetrically arranged on the disc (9) about a circle point, a third cylinder (11) is fixedly mounted on the assembly plate (3) via a third conduit (10), a fourth cylinder (12) is mounted on the first inlet (201), the disc (9) is located between the third cylinder (11) and the fourth cylinder (12), and the third cylinder (11) and the fourth cylinder (12) are sealed and slidably fitted with the disc (9) to form a conveying passage for the medium; An elastic trigger mechanism is mounted on the third cylinder (11), is triggered when the filtering area (901) is blocked, and is capable of driving a synchronous follower mechanism mounted on the frame (1) to move; the synchronous follower mechanism is capable of driving the disc (9) to rotate, so that the positions of the two filtering areas (901) are swapped.

2. The spiral plate heat exchanger for viscous fluid according to claim 1, characterized in that: The elastic trigger mechanism comprises an elastic telescopic structure mounted on the third cylinder (11) and an ejection assembly connected to the elastic telescopic structure; the ejection assembly is mounted on the third guide tube (10) and connected to the synchronous follower mechanism.

3. The spiral plate heat exchanger for viscous fluid according to claim 2, characterized in that: The elastic telescopic structure comprises a cylindrical pipe (14) fixed on the third cylinder (11) and connected to the third cylinder (11), and a driven rod (15) slidably fitted with the cylindrical pipe (14), wherein the driven rod (15) is fixed to a piston (16) sealingly slidably arranged in the cylindrical pipe (14); The end of the driven rod (15) away from the piston (16) is connected to the ejection assembly, and the outer periphery of the driven rod (15) is also sleeved with a first cylindrical spring (13), and the two ends of the first cylindrical spring (13) are respectively connected to the inner wall of the cylindrical pipe (14) and the piston (16).

4. The spiral plate heat exchanger for viscous fluid according to claim 3, characterized in that: The ejection assembly comprises a sleeve (18) which is slidably sleeved on the third conduit (10) and connected to the driven rod (15) via a connecting rod (17); one end of the connecting rod (17) is hinged to the sleeve (18), and the other end is hinged to an end of the driven rod (15) away from the piston (16); a lug (1801) is fixedly provided on the sleeve (18); a vertical rod (20) is slidably provided on the lug (1801), and a round table (2001) is fixedly provided on the vertical rod (20); The outer periphery of the vertical rod (20) is sleeved with a second cylindrical spring (19) whose two ends are respectively connected to the truncated table (2001) and the lug (1801); one end of the vertical rod (20) is connected to a limiting structure, and the other end is connected to the synchronous follower mechanism.

5. The spiral plate heat exchanger for viscous fluid according to claim 4, characterized in that: The limiting structure comprises a limiting plate (21) connected to the recoil mechanism, the limiting plate (21) being provided with a groove body adapted to the vertical rod (20), the upper end of the vertical rod (20) extending into the groove body and being slidably connected to the limiting plate (21); The slot body comprises a first slot section (2101), a second slot section (2102), a third slot section (2103), a fourth slot section (2104) and a fifth slot section (2105) which are connected to each other. The fifth slot section (2105) is arranged obliquely, and one end of the fifth slot section (2105) away from the fourth slot section (2104) is connected to a connection point between the first slot section (2101) and the second slot section (2102). The limiting plate (21) is also rotatably provided with a movable part (22) located at one end of the fifth slot section (2105) away from the fourth slot section (2104). The rotating shaft of the movable part (22) is connected to a torsion spring, and the movable part (22) can and can only swing towards the first slot section (2101) and the second slot section (2102).

6. The spiral plate heat exchanger for viscous fluid according to claim 5, characterized in that: The synchronous follower mechanism comprises a transmission frame arranged on the frame body (1) and a one-way transmission structure connecting the transmission frame and the rotating shaft of the disc (9), the transmission frame comprises a slide plate (23) slidably arranged on the frame body (1), two support arms (2301) fixed on the slide plate (23) and a slider (24) slidably arranged on the two support arms (2301), and the slider (24) is fixed to the vertical rod (20) via a connecting arm (25).

7. The spiral plate heat exchanger for viscous fluid according to claim 6, characterized in that: The one-way transmission structure comprises a ratchet plate (28) fixedly mounted on the slide plate (23) via two fixed arms (26) and a ratchet wheel (29) rotatably mounted on the frame (1); the rotating axes of the ratchet wheel (29) and the disc (9) are connected via a transmission belt (27).

8. The spiral plate heat exchanger for viscous fluid according to claim 5, characterized in that: The recoil mechanism comprises a first conduit (5) and a second conduit (8) fixedly mounted on the assembly plate (3), and a first cylinder (6) and a second cylinder (7) respectively fixedly connected to the first conduit (5) and the second conduit (8); the disc (9) is located between the first cylinder (6) and the second cylinder (7), and the first cylinder (6) and the second cylinder (7) are sealingly and slidably fitted to the disc (9); The limiting plate (21) is fixedly mounted on the second conduit (8) via two fastening arms (30), a pump body (4) is also mounted on the assembly plate (3), and one end of the first conduit (5) away from the first cylinder (6) is connected to the water outlet of the pump body (4).

9. A heat exchange device, characterized in that: It comprises a spiral plate heat exchanger for viscous fluids as described in any one of claims 1 to 8.

10. A heat exchange method for viscous fluid, using the heat exchange device according to claim 9, characterized in that: The following steps are involved: Step 1: two media enter the heat exchanger body (2) from the first inlet (201) and the second inlet (203) respectively to exchange heat, and are discharged from the first outlet (202) and the second outlet (204) respectively; Step 2: The filter area (901) on the disc (9) filters out the fibrous substances in the medium; Step three, when the filter area (901) is blocked, the elastic trigger mechanism moves, prompting the synchronous follower mechanism to drive the disc (9) to rotate, and the two filter areas (901) are swapped to restore the smooth state of the medium conveying passage; Step 4: The backflushing mechanism operates to impact the filtered matter that is blocked in the filter area (901) to restore the filter area (901) to be unobstructed.

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