An energy-saving MVR evaporator with heat recovery

Abstract

The present invention provides an energy-saving MVR evaporator with heat energy recovery, comprising a heat recovery liquid inlet pipe, a heat energy recovery mechanism and a filtering mechanism, wherein the filtering mechanism is arranged between the heat recovery liquid inlet pipe and the heat energy recovery mechanism, and a heat recovery liquid outlet pipe connected with the heat energy recovery mechanism, the heat energy recovery mechanism is fixedly arranged on a support seat, and a steam through hole for connecting with a steam transmission pipe is opened on the heat energy recovery mechanism, wherein the filtering mechanism comprises a filter box connected with the heat recovery liquid inlet pipe, and a first-stage filter screen assembly, a second-stage filter screen assembly, a third-stage filter screen assembly and a fourth-stage filter screen assembly are arranged in sequence from top to bottom in the filter box; the present invention ensures that the heat recovery device still has high-efficiency heat recovery performance after working for a long time.

Description

Technical Field

[0001] The invention relates to the technical field of evaporators, and in particular to an energy-saving MVR evaporator with heat recovery. Background Art

[0002] The MVR evaporator is a new type of high-efficiency and energy-saving evaporation equipment, but the existing MVR evaporator does not have a certain heat recovery structure, which easily causes the heat generated by the MVR evaporator to be wasted. In the existing device, when the heat energy is recovered to heat the water, there is a lack of a water quality filtering device, so the application effect of heat energy recovery is greatly reduced. The existing MVR evaporator has a poor water quality filtering effect (the water contains solids of different particle sizes), resulting in the water entering the heat exchange device to carry some solids. When the solids move, part of them will be deposited on the inner surface of the heat exchange device. After the heat exchange device has been working for a long time, a layer of solids will be deposited on the inner surface of the heat exchange device. Due to the obstruction of the sediment, the heat transfer efficiency will be reduced, thereby reducing the recovery of heat energy. For this reason, the technicians in this field provide an energy-saving MVR evaporator with heat energy recovery to solve the problems raised in the above background technology. Summary of the invention

[0003] To achieve the above-mentioned purpose, the present invention provides an energy-saving MVR evaporator with heat energy recovery, comprising a heat recovery liquid inlet pipe, a heat recovery mechanism and a filtering mechanism, wherein the filtering mechanism is arranged between the heat recovery liquid inlet pipe and the heat recovery mechanism, and a heat recovery liquid outlet pipe connected to the heat recovery mechanism, the heat recovery mechanism is fixedly arranged on a support seat, and a steam through hole for connecting to a steam transmission pipe is opened on the heat recovery mechanism, wherein the filtering mechanism comprises a filter box connected to the heat recovery liquid inlet pipe, and a first-stage filter mesh assembly, a second-stage filter mesh assembly, a third-stage filter mesh assembly and a fourth-stage filter mesh assembly are arranged in the filter box from top to bottom, and the mesh sizes of the first-stage filter mesh assembly, the second-stage filter mesh assembly, the third-stage filter mesh assembly and the fourth-stage filter mesh assembly decrease in sequence.

[0004] Optionally, the filtering mechanism also includes a cleaning component to clean the upper surfaces of the first-stage filter assembly, the second-stage filter assembly, the third-stage filter assembly and the fourth-stage filter assembly, the cleaning component includes a driving motor fixed on the outer top wall of the filter box, the driving end of the driving motor is connected to a rotating rod, the cleaning component also includes four second fixed tubes, the four second fixed tubes are respectively fixedly inserted in the first-stage filter assembly, the second-stage filter assembly, the third-stage filter assembly and the fourth-stage filter assembly, the rotating rod is movably inserted in the four second fixed tubes, the upper end surface and the lower end surface of the second fixed tube are fixedly provided with sealing flanges, the sealing flange is movably sleeved outside the rotating rod, a connecting plate is fixedly connected to the side wall of the rotating rod, and a plurality of scraping and cleaning brushes are fixedly connected to the lower end surface of the connecting plate, and the scraping and cleaning brushes are respectively set to conflict with the first-stage filter assembly, the second-stage filter assembly, the third-stage filter assembly and the fourth-stage filter assembly.

[0005] Optionally, the first-stage filter screen assembly includes a first fixed tube fixedly connected to the inner wall of the filter box, and a first filter screen fixedly connected to the inner wall of the first fixed tube, wherein the first filter screen and the first fixed tube separate the inner cavity of the filter box into two upper and lower cavities.

[0006] Optionally, it also includes a suction and blowing mechanism, which includes a suction and blowing ring movably mounted outside the second fixed tube, a knocking plate fixedly arranged on the upper end surface of the suction and blowing ring, an elastic telescopic component fixedly connected to the upper end surface of the suction and blowing ring, the upper end of the elastic telescopic component is fixedly connected to the lower end surface of the first filter net, and sealing rings are fixedly connected to the inner ring wall and the outer ring wall of the suction and blowing ring, and the two sealing rings are respectively arranged to contact each other with the second fixed tube and the first fixed tube.

[0007] Optionally, the suction and blowing mechanism also includes N first magnet rods and M second magnet rods, the N first magnet rods are fixedly connected to the lower end surface of the suction and blowing ring, and the N first magnet rods are arranged in an equidistant ring shape, the M second magnet rods are fixedly connected to the rotating rod, and the M second magnet rods are arranged in an equidistant ring shape, wherein N is a positive integer greater than or equal to 1, and M is a positive integer greater than or equal to 1.

[0008] Optionally, the heat energy recovery mechanism includes a heat energy recovery box fixedly connected to the lower end of the filter box, the heat energy recovery box is fixedly set on the support seat, and a connecting pipe fixedly plugged into the bottom plate of the filter box and the top plate of the heat energy recovery box, and used for connecting the filter box and the heat energy recovery box, the connecting pipe is fixedly plugged into the first fixed cylinder, the first fixed cylinder is fixedly set on the first sealing plate, the first sealing plate is fixedly set on the inner side wall of the heat energy recovery box, Q connecting pipes are fixedly plugged on the first sealing plate, the Q connecting pipes are fixedly plugged on the second sealing plate, the second sealing plate is fixedly connected to the inner side wall of the heat energy recovery box, and a second fixed cylinder is fixedly connected on the lower end surface of the second sealing plate, wherein a first storage chamber connected to the connecting pipe is formed between the first fixed cylinder and the first sealing plate, a heat energy recovery chamber for steam movement is formed between the first sealing plate and the second sealing plate, and a second storage chamber connected to the heat recovery liquid outlet pipe is formed between the second fixed cylinder and the second sealing plate, and Q is a positive integer greater than or equal to 1.

[0009] Optionally, it also includes an anti-deposition mechanism, which includes a driving assembly connected to the lower end of the rotating rod, the driving assembly is interconnected with a support plate, the support plate is movably arranged in the first storage chamber, an anti-deposition rod is fixedly connected to the lower end surface of the support plate, the anti-deposition rod is movably inserted in the connecting conduit, and a plurality of anti-deposition brushes are provided on the outer fixed sleeve of the anti-deposition rod, the anti-deposition brushes are arranged to be in contact with the inner side wall of the connecting conduit, wherein the number of the anti-deposition rods is matched with the number of the connecting conduits.

[0010] Optionally, the anti-deposition mechanism also includes a guide support assembly with one end connected to the top wall inside the first fixed tube and the other end fixedly connected to the upper end surface of the support plate, the guide support assembly includes a guide support rod, a guide support tube and a guide support spring, the guide support rod is movably inserted in the guide support tube, the guide support spring is wound outside the guide support rod, and the two ends of the guide support spring are respectively fixedly connected to the side wall of the guide support rod and the outer side wall of the guide support tube.

[0011] Optionally, the driving assembly includes a fixed column fixedly connected to the lower end of the rotating rod, the fixed column is movably arranged in the connecting tube, an inclined surface is provided on the fixed column, a resistance rod is provided on the inclined surface, the lower end of the resistance rod is fixedly connected to the upper end surface of the support plate, and the upper end of the resistance rod is arranged as a round head structure.

[0012] Optionally, it also includes a rotating mechanism, which includes a rotating shaft, which is arranged between the support plate and the anti-deposition rod and is used to connect the support plate and the anti-deposition rod to each other. The rotating mechanism also includes a spiral rod fixedly sleeved on the outside of the anti-deposition rod, and the spiral rod is threadedly inserted in the inner spiral tube. A plurality of fixed rods are fixedly connected to the lower end surface of the inner spiral tube, and the lower end of the fixed rod is fixedly connected to the upper end surface of the first sealing plate.

[0013] The beneficial effects of the present invention are as follows:

[0014] The present invention improves the structure of the existing energy-saving MVR evaporator with heat recovery. The improved energy-saving MVR evaporator with heat recovery is provided with a filtering mechanism between the heat recovery liquid inlet pipe and the heat recovery device. The filtering mechanism comprises a combined structure of a first-stage filter mesh assembly, a second-stage filter mesh assembly, a third-stage filter mesh assembly and a fourth-stage filter mesh assembly. The arrangement of the combined structure can effectively remove solids in the water through multi-stage filtration of water, thereby ensuring that the solids contained in the water entering the heat recovery device are negligible, thereby avoiding the deposition of solids on the inner surface of the heat recovery device, and ensuring that the heat recovery device still has high-efficiency heat recovery performance after long-term operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of an embodiment of an energy-saving MVR evaporator with heat recovery according to the present invention;

[0016] Figure 2 It is a schematic cross-sectional structure diagram of the filtering mechanism of the energy-saving MVR evaporator with heat recovery of the present invention;

[0017] Figure 3 The energy-saving MVR evaporator with heat recovery of the present invention Figure 2 A schematic diagram of the partially enlarged structure;

[0018] Figure 4 The energy-saving MVR evaporator with heat recovery of the present invention Figure 3 A schematic diagram of the enlarged structure in the middle;

[0019] Figure 5 It is a structural schematic diagram of the suction and blowing mechanism in the energy-saving MVR evaporator with heat recovery of the present invention;

[0020] Figure 6 The energy-saving MVR evaporator with heat recovery of the present invention Figure 5 A magnified schematic diagram of the structure B in the middle;

[0021] Figure 7 It is a cross-sectional structural schematic diagram of the heat energy recovery mechanism of the energy-saving MVR evaporator with heat energy recovery of the present invention;

[0022] Figure 8 The energy-saving MVR evaporator with heat recovery of the present invention Figure 7 A partial enlarged schematic diagram;

[0023] Fig. 9 The energy-saving MVR evaporator with heat recovery of the present invention Figure 8 Schematic diagram of the local three-dimensional structure;

[0024] Fig.10 It is a structural schematic diagram of the anti-deposition mechanism in the energy-saving MVR evaporator with heat recovery of the present invention;

[0025] Fig.11 The energy-saving MVR evaporator with heat recovery of the present invention Fig.10 A magnified schematic diagram of the C structure;

[0026] Fig.12 It is a structural schematic diagram of the rotating mechanism in the energy-saving MVR evaporator with heat recovery of the present invention.

[0027] Reference numerals

[0028] Heat recovery liquid inlet pipe 1,

[0029] Filter mechanism 2, filter box 21, first filter screen assembly 22, first filter screen 221, first fixed pipe 222, second filter screen assembly 23, third filter screen assembly 24, fourth filter screen assembly 25, scraping and cleaning assembly 26, drive motor 261, rotating rod 262, second fixed pipe 263, sealing flange 264, connecting plate 265, scraping and cleaning brush 266,

[0030] Heat recovery mechanism 3, heat recovery box 31, connecting pipe 32, first fixed cylinder 33, first blocking plate 34, connecting conduit 35, second blocking plate 36, heat recovery chamber 37, second fixed cylinder 38, first storage chamber 39, second storage chamber 310,

[0031] Heat recovery liquid outlet pipe 4,

[0032] Support seat 5,

[0033] The suction and blowing mechanism 6, the suction and blowing ring 61, the knocking plate 62, the elastic telescopic component 63, the sealing ring 64, the first magnet rod 65, the second magnet rod 66,

[0034] Steam hole 7,

[0035] Anti-deposition mechanism 8, fixed column 81, inclined surface 82, abutment rod 83, support plate 84, anti-deposition rod 85, anti-deposition brush 86, guide support assembly 87, guide support rod 871, guide support cylinder 872, guide support spring 873,

[0036] Rotating mechanism 9 , rotating shaft 91 , spiral rod 92 , inner spiral tube 93 , fixing rod 94 . DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than 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. Unless otherwise defined, the technical terms or scientific terms used herein should be understood by people with general skills in the field of the present invention. The words "including" and similar words used in this article mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects.

[0038] The existing energy-saving MVR evaporator with heat recovery does not have a filtering structure, so the water entering the heat recovery device contains a large amount of solid matter, and with long-term operation, the solid matter will be deposited inside the heat recovery device, so that during the heat exchange process, a barrier layer is formed between the liquid water and the steam. The formation of the barrier layer will greatly reduce the heat recovery efficiency. After many groups of experiments, the recovery efficiency of the heat recovery device containing the barrier layer will be reduced to between 30-60%, resulting in a large amount of heat loss.

[0039] In view of the problems existing in the prior art, the embodiments of the present invention provide an energy-saving MVR evaporator with heat recovery, such as Figure 1 , Figure 2 and Figure 3 As shown, the energy-saving MVR evaporator with heat energy recovery includes a heat recovery liquid inlet pipe 1, a heat energy recovery mechanism 3 and a filter mechanism 2, the filter mechanism 2 is arranged between the heat recovery liquid inlet pipe 1 and the heat energy recovery mechanism 3, and a heat recovery liquid outlet pipe 4 connected to the heat energy recovery mechanism 3, the heat energy recovery mechanism 3 is fixedly arranged on a support seat 5, and a steam through hole 7 for connecting to a steam transmission pipe is opened on the heat energy recovery mechanism 3, wherein the filter mechanism 2 includes a filter box 21 connected to the heat recovery liquid inlet pipe 1, and a first-stage filter screen assembly 22, a second-stage filter screen assembly 23, a third-stage filter screen assembly 24 and a fourth-stage filter screen assembly 25 are arranged in the filter box 21 from top to bottom, and the mesh sizes of the first-stage filter screen assembly 22, the second-stage filter screen assembly 23, the third-stage filter screen assembly 24 and the fourth-stage filter screen assembly 25 decrease in sequence.

[0040] During operation, the recovered heat water will enter the filter box 21 through the heat recovery liquid inlet pipe 1, and enter the heat energy recovery mechanism 3 from top to bottom through the first-stage filter mesh assembly 22, the second-stage filter mesh assembly 23, the third-stage filter mesh assembly 24 and the fourth-stage filter mesh assembly 25. The arrangement of this embodiment can effectively remove solid matter in the recovered heat water through multi-stage filtration of the first-stage filter mesh assembly 22, the second-stage filter mesh assembly 23, the third-stage filter mesh assembly 24 and the fourth-stage filter mesh assembly 25.

[0041] Of course, in the actual implementation process, it is not limited to setting up four stages of filtration, and more than four stages or less than four stages can be set, as long as the solid matter in the recovered heat water can be filtered out. The setting will not be repeated here.

[0042] It should be noted that, in this embodiment, at least the mesh size of the filter in the third-stage filter assembly 24 must be smaller than 30 μm to ensure that the solid matter contained in the water entering the heat recovery mechanism 3 can be ignored.

[0043] During long-term operation, filtered materials will be deposited on the first-stage filter mesh assembly 22, the second-stage filter mesh assembly 23, the third-stage filter mesh assembly 24 and the fourth-stage filter mesh assembly 25 through filtering action. The presence of filtered materials will block the mesh holes and reduce the filtering effect.

[0044] In order to solve the above problems, in one implementation, Figure 3 and Figure 4 As shown, the filtering mechanism 2 also includes a cleaning component 26 to clean the upper surfaces of the first-stage filter screen component 22, the second-stage filter screen component 23, the third-stage filter screen component 24 and the fourth-stage filter screen component 25. The cleaning component 26 includes a driving motor 261 fixed to the outer top wall of the filter box 21, and the driving end of the driving motor 261 is connected to a rotating rod 262. The cleaning component 26 also includes four second fixed pipes 263, and the four second fixed pipes 263 are respectively fixedly plugged into the first-stage filter screen component 22, the second-stage filter screen component 23, the third-stage filter screen component 24, and the fourth-stage filter screen component 25. and the fourth-stage filter screen assembly 25, the rotating rod 262 is movably inserted in the four second-stage fixed tubes 263, and the upper and lower end surfaces of the second fixed tubes 263 are fixedly provided with sealing flanges 264, and the sealing flanges 264 are movably sleeved outside the rotating rod 262, and a connecting plate 265 is fixedly connected to the side wall of the rotating rod 262, and a plurality of scraping and cleaning brushes 266 are fixedly connected to the lower end surface of the connecting plate 265, and the scraping and cleaning brushes 266 are respectively set in conflict with the first-stage filter screen assembly 22, the second-stage filter screen assembly 23, the third-stage filter screen assembly 24 and the fourth-stage filter screen assembly 25.

[0045] The setting of the cleaning component 26 can clean up the filtered materials deposited on the upper end surfaces of the first-stage filter screen component 22, the second-stage filter screen component 23, the third-stage filter screen component 24 and the fourth-stage filter screen component 25; and the structural design of the cleaning component 26 is reasonable. Through the setting of the sealing flange 264, it can prevent unfiltered water from moving across the filter screen of this stage through the connection between the rotating rod 262 and the second fixed pipe 263. At the same time, the setting of several connecting plates 265 and the scraping cleaning brush 266 structures can synchronously complete the cleaning of the first-stage filter screen component 22, the second-stage filter screen component 23, the third-stage filter screen component 24 and the fourth-stage filter screen component 25 by setting the same driving source, thereby achieving a high-efficiency cleaning effect and being able to reduce production costs.

[0046] Specifically, in one example, no induction device is provided, so that when the system drives the heat recovery water to drive into the filter mechanism 2 through the heat recovery liquid inlet pipe 1, the drive motor 261 is also driven to start, so that the drive motor 261 and the rotating rod 262 drive the connecting plate 265 and the scraping and cleaning brush 266 to rotate, thereby cleaning the upper surface of the first-stage filter assembly 22, the second-stage filter assembly 23, the third-stage filter assembly 24 and the fourth-stage filter assembly 25; in another example, a sensing device is provided, and the setting of this example, compared with the example without the sensing device, can start the drive motor 261 when the heat recovery water enters the filter box 21, which can save more resources. Specifically, the sensing device can be provided on the inner side wall of the filter box 21, or it can be provided inside the heat recovery liquid inlet pipe 1, that is, on the movement path of the heat recovery water; when working, when the sensing device senses that the heat recovery water enters the filter box 21, the drive motor 261 will be controlled to work by the processor electrically connected to the sensing device.

[0047] like Figure 5 As shown, in one embodiment, the first-stage filter screen assembly 22 includes a first fixed tube 222 fixedly connected to the inner wall of the filter box 21, and a first filter screen 221 fixedly connected to the inner wall of the first fixed tube 222, wherein the first filter screen 221 and the first fixed tube 222 separate the inner cavity of the filter box 21 into two upper and lower cavities.

[0048] It should be noted that, except for the different mesh sizes, the structures of the second-stage filter assembly 23 , the third-stage filter assembly 24 and the fourth-stage filter assembly 25 are consistent with the structure of the first-stage filter assembly 22 .

[0049] During the actual filtering process, solid matter will enter the mesh, which will cause the mesh to be blocked, thereby reducing the filtering effects of the first-stage filter mesh assembly 22, the second-stage filter mesh assembly 23, the third-stage filter mesh assembly 24 and the fourth-stage filter mesh assembly 25.

[0050] In order to solve the above problems, in one implementation, Figure 5 and Figure 6 As shown, the energy-saving MVR evaporator with heat recovery also includes an exhaust mechanism 6, which includes an exhaust ring 61 movably sleeved on the outside of the second fixed tube 263, a knocking plate 62 is fixedly arranged on the upper end surface of the exhaust ring 61, an elastic telescopic component 63 (which can be understood as elastic) is fixedly connected to the upper end surface of the exhaust ring 61, and the upper end of the elastic telescopic component 63 is fixedly connected to the lower end surface of the first filter screen 221, and sealing rings 64 are fixedly connected to the inner and outer ring walls of the exhaust ring 61, and the two sealing rings 64 are respectively arranged to contact each other with the second fixed tube 263 and the first fixed tube 222.

[0051] The setting of the sealing ring 64 in this embodiment can not only achieve the sealing between the suction ring 61 and the second fixed tube 263, but also achieve the sealing between the suction ring 61 and the first fixed tube 222. In this way, through the setting of the combined structure of the suction ring 61 and the sealing ring 64, a supporting groove can be formed between the first filter screen 221. During operation, as the recovered heat water passes through the first filter screen 221 and moves to the bottom of the first filter screen 221, it will move into the supporting groove. As the amount of recovered heat water in the supporting groove increases, it will press the suction ring 61 and the sealing ring 64 combination. The structure moves downward, and as the amount of water increases, the combined structure of the suction ring 61 and the sealing ring 64 will move downward and detach from the second fixed tube 263 and the first fixed tube 222, so that the recovered heat water in the supporting tank will dissipate into the supporting tank. As the recovered heat water in the supporting tank is lost, the suction ring 61 will move upward under the pull of the elastic telescopic component 63, and will hit the first filter screen 221 with the knocking plate 62, so that the solid objects blocked in the mesh of the first filter screen 221 will be vibrated out of the mesh through the vibration, thereby achieving the effect of unblocking.

[0052] In order to provide a greater driving force for the downward movement of the suction ring 61, in one embodiment, as Figure 6 As shown, the suction and blowing mechanism 6 also includes N first magnet rods 65 and M second magnet rods 66, the N first magnet rods 65 are all fixedly connected to the lower end surface of the suction and blowing ring 61, and the N first magnet rods 65 are arranged in an equidistant ring shape, the M second magnet rods 66 are all fixedly connected to the rotating rod 262, and the M second magnet rods 66 are arranged in an equidistant ring shape, wherein N is a positive integer greater than or equal to 1, and M is a positive integer greater than or equal to 1.

[0053] In the actual design process, the number of the first magnet rod 65 and the second magnet rod 66 can be set to be consistent or inconsistent, and the number of the first magnet rod 65 and the second magnet rod 66 can be set to one or more. In actual settings, the number of the first magnet rod 65 and the second magnet rod 66 can be set one-to-one or one-to-many.

[0054] The first magnet rod 65 and the second magnet rod 66 have the same magnetic properties on the side close to each other. In actual operation, when the second magnet rod 66 rotates to the bottom of the first magnet rod 65 along with the movement of the rotating rod 262, the suction and blowing ring 61 will be pulled downward through the first magnet rod 65, thereby cooperating with the water pressure to press the suction and blowing ring 61 downward, thereby shortening the downward movement period of the suction and blowing ring 61 and improving work efficiency.

[0055] In the existing heat recovery device, a single pipeline is set up to achieve heat recovery. However, as the water absorbs heat as it continues to move in the pipeline, the temperature of the water in the second half of the pipeline will be close to the temperature of the steam, or the same as the temperature of the steam. At this time, the efficiency of heat recovery of this part of the water is limited.

[0056] In order to solve the above problems, in one implementation, Figure 7 , Figure 8 and Fig. 9 As shown, the heat recovery mechanism 3 includes a heat recovery box 31 fixedly connected to the lower end of the filter box 21, the heat recovery box 31 is fixedly arranged on the support seat 5, and a connecting pipe 32 fixedly inserted into the bottom plate of the filter box 21 and the top plate of the heat recovery box 31, and used for connecting the filter box 21 and the heat recovery box 31, the connecting pipe 32 is fixedly inserted into the first fixed cylinder 33, the first fixed cylinder 33 is fixedly arranged on the first sealing plate 34, the first sealing plate 34 is fixedly arranged on the inner side wall of the heat recovery box 31, and Q connecting conduits 35 are fixedly inserted on the first sealing plate 34, and Q connecting conduits 35 are fixedly inserted into the first sealing plate 34. The connecting conduit 35 is externally fixedly plugged into the second sealing plate 36, the second sealing plate 36 is fixedly connected to the inner wall of the heat recovery box 31, and a second fixed cylinder 38 is fixedly connected to the lower end surface of the second sealing plate 36, wherein a first storage chamber 39 connected to the connecting pipe 32 is formed between the first fixed cylinder 33 and the first sealing plate 34, a heat recovery chamber 37 for steam movement is formed between the first sealing plate 34 and the second sealing plate 36, and a second storage chamber 310 connected to the heat recovery liquid outlet pipe 4 is formed between the second fixed cylinder 38 and the second sealing plate 36, and Q is a positive integer greater than or equal to 1.

[0057] The number of the connecting conduits 35 can be one or more. When multiple connecting conduits 35 are provided, multiple conduits can be operated synchronously during heat recovery, which can greatly improve the heat recovery efficiency.

[0058] During operation, the filtered heat recovery water will enter the first storage chamber 39 through the connecting pipe 32, and then be separated into multiple connecting conduits 35 in the first storage chamber 39. Since the multiple connecting conduits 35 are all in a steam environment, that is, they exist in the heat recovery chamber 37 (the heat recovery chamber 37 is connected to the steam through hole 7), heat recovery can be performed through the heat recovery water in the multiple connecting conduits 35. Then the water after absorbing the heat enters the second storage chamber 310 and is discharged through the heat recovery liquid outlet pipe 4.

[0059] It is important to note that heat recovery is not limited to the use of heat recovery water.

[0060] In the existing equipment, due to the problem of poor water quality filtration, a large amount of solid matter will enter the heat recovery device, which can be understood as the connecting conduit 35 in the present invention, and will be deposited on the inner wall of the connecting conduit 35, thereby depositing a layer of sediment on the inner wall of the connecting conduit 35. The presence of the sediment will form a barrier between the heat recovery water and the wall and steam of the connecting conduit 35, thereby reducing the heat recovery efficiency.

[0061] In order to solve the above problems, in one implementation, Fig.10 and Fig.11 As shown, the energy-saving MVR evaporator with heat recovery also includes an anti-deposition mechanism 8, which includes a driving assembly connected to the lower end of the rotating rod 262, and the driving assembly is interconnected with a support plate 84, and the support plate 84 is movably arranged in the first storage chamber 39, and an anti-deposition rod 85 is fixedly connected to the lower end surface of the support plate 84, and the anti-deposition rod 85 is movably inserted in the connecting conduit 35, and a plurality of anti-deposition brushes 86 are fixedly sleeved outside the anti-deposition rod 85, and the anti-deposition brushes 86 are arranged to be in contact with the inner side wall of the connecting conduit 35, wherein the number of the anti-deposition rods 85 is matched with the number of the connecting conduits 35.

[0062] In one embodiment, Fig.11As shown, the anti-deposition mechanism 8 also includes a guide support assembly 87 with one end connected to the inner top wall of the first fixed cylinder 33 and the other end fixedly connected to the upper end surface of the support plate 84. The guide support assembly 87 includes a guide support rod 871, a guide support cylinder 872 and a guide support spring 873. The guide support rod 871 is movably inserted in the guide support cylinder 872, and the guide support spring 873 is wound around the outside of the guide support rod 871. The two ends of the guide support spring 873 are respectively fixedly connected to the side wall of the guide support rod 871 and the outer side wall of the guide support cylinder 872.

[0063] In one embodiment, Fig.11 As shown, the driving assembly includes a fixed column 81 fixedly connected to the lower end of the rotating rod 262, the fixed column 81 is movably arranged in the connecting pipe 32, the fixed column 81 is provided with an inclined surface 82, and a resisting rod 83 is provided on the inclined surface 82, the lower end of the resisting rod 83 is fixedly connected to the upper end surface of the supporting plate 84, and the upper end of the resisting rod 83 is set as a round head structure. Of course, in other examples, it is not limited to the driving assembly, for example, it can also be a driving cylinder with a driving direction in the vertical direction.

[0064] The anti-deposition mechanism 8 can clean the inner wall of the connecting conduit 35, thereby preventing solids from being deposited on the inner wall of the connecting conduit 35; when working, the rotation of the rotating rod 262 will cause the fixed column 81 to rotate, and the rotation of the fixed column 81 will cause the resistance rod 83 to move downward through the inclined surface 82, and the downward movement of the resistance rod 83 will cause the anti-deposition rod 85 to move downward through the supporting plate 84, and the movement of the anti-deposition rod 85 will cause the anti-deposition brush 86 to move downward, and the movement of the anti-deposition brush 86 and the anti-deposition rod 85 can realize the cleaning of the inner wall of the connecting conduit 35, thereby preventing solids from being deposited on the inner wall of the connecting conduit 35. In addition, the setting of the guide support assembly 87 can cooperate with the driving assembly to drive the anti-deposition rod 85 to move up and down in a cycle, and in the process of the anti-deposition rod 85 moving up and down in a cycle, the anti-deposition rod 85 can play a role in clearing the sediment.

[0065] In actual operation, the anti-deposition mechanism 8 and the filtering mechanism 2 can be provided separately or together.

[0066] In order to better solve the problem of solid deposition, in one embodiment, Fig.12As shown, it also includes a rotating mechanism 9, which includes a rotating shaft 91. The rotating shaft 91 is arranged between the support plate 84 and the anti-deposition rod 85, and is used to connect the support plate 84 and the anti-deposition rod 85 to each other. The rotating mechanism 9 also includes a spiral rod 92 fixedly sleeved on the outside of the anti-deposition rod 85, and the spiral rod 92 is threadedly inserted in the inner spiral tube 93. A plurality of fixed rods 94 are fixedly connected to the lower end surface of the inner spiral tube 93, and the lower ends of the fixed rods 94 are fixedly connected to the upper end surface of the first sealing plate 34.

[0067] exist Fig.11 In the example, the anti-deposition rod 85 only moves up and down in the vertical direction. In this example, due to the setting of the rotating mechanism 9, the anti-deposition rod 85 can not only move up and down in the vertical direction, but also rotate while moving up and down in the vertical direction. In this way, the effect of efficiently cleaning the sediment can be achieved through multi-directional movement.

[0068] The beneficial effects of the present invention are as follows:

[0069] The present invention improves the structure of the existing energy-saving MVR evaporator with heat recovery. The improved energy-saving MVR evaporator with heat recovery is provided with a filter mechanism 2 component between the heat recovery liquid inlet pipe and the heat recovery device. The filter mechanism 2 includes a combination structure of a first-stage filter mesh component 22, a second-stage filter mesh component 23, a third-stage filter mesh component 24 and a fourth-stage filter mesh component 25. The arrangement of the combination structure can effectively remove solids in the water through multi-stage filtration of water, thereby ensuring that the solids contained in the water entering the heat recovery device are negligible, thereby avoiding the deposition of solids on the inner surface of the heat recovery device, and ensuring that the heat recovery device still has high-efficiency heat recovery performance after long-term operation.

[0070] Although the embodiments of the present invention are described in detail above, it is obvious to those skilled in the art that various modifications and variations can be made to these embodiments. However, it should be understood that such modifications and variations are within the scope and spirit of the present invention as described in the claims. Moreover, the present invention described herein may have other embodiments and may be implemented or realized in a variety of ways.

Claims

1. An energy-saving MVR evaporator with heat recovery, characterized in that: The invention comprises a heat recovery liquid inlet pipe (1), a heat recovery mechanism (3) and a filter mechanism (2), wherein the filter mechanism (2) is arranged between the heat recovery liquid inlet pipe (1) and the heat recovery mechanism (3), and a heat recovery liquid outlet pipe (4) connected to the heat recovery mechanism (3), the heat recovery mechanism (3) is fixedly arranged on a support seat (5), and a steam through hole (7) for connecting to a steam transmission pipe is opened on the heat recovery mechanism (3), wherein the filter mechanism (2) comprises a filter box (21) connected to the heat recovery liquid inlet pipe (1), and a first-stage filter screen assembly (22), a second-stage filter screen assembly (23), a third-stage filter screen assembly (24) and a fourth-stage filter screen assembly (25) are arranged in sequence from top to bottom in the filter box (21), and the mesh sizes of the first-stage filter screen assembly (22), the second-stage filter screen assembly (23), the third-stage filter screen assembly (24) and the fourth-stage filter screen assembly (25) are decreased in sequence; The filtering mechanism (2) further comprises a cleaning assembly (26) for cleaning the upper surfaces of the first-stage filter assembly (22), the second-stage filter assembly (23), the third-stage filter assembly (24) and the fourth-stage filter assembly (25); the cleaning assembly (26) comprises a driving motor (261) fixed to the outer top wall of the filter box (21); the driving end of the driving motor (261) is connected to a rotating rod (262); the cleaning assembly (26) further comprises four second fixed pipes (263); the four second fixed pipes (263) are respectively fixedly plugged into the first-stage filter assembly (22), the second-stage filter assembly (23), the third-stage filter assembly (24) and the fourth-stage filter assembly (25). A fourth-stage filter screen assembly (25), wherein the rotating rod (262) is movably inserted into the four second fixed tubes (263), the upper end surface and the lower end surface of the second fixed tube (263) are both fixedly provided with sealing flanges (264), the sealing flanges (264) are movably sleeved outside the rotating rod (262), a connecting plate (265) is fixedly connected to the side wall of the rotating rod (262), and a plurality of scraping and cleaning brushes (266) are fixedly connected to the lower end surface of the connecting plate (265), and the scraping and cleaning brushes (266) are respectively arranged to abut against the first-stage filter screen assembly (22), the second-stage filter screen assembly (23), the third-stage filter screen assembly (24), and the fourth-stage filter screen assembly (25).

2. The energy-saving MVR evaporator with heat recovery according to claim 1 is characterized in that: The first-stage filter screen assembly (22) comprises a first fixed tube (222) fixedly connected to the inner side wall of the filter box (21), and a first filter screen (221) fixedly connected to the inner side wall of the first fixed tube (222), wherein the first filter screen (221) and the first fixed tube (222) separate the inner cavity of the filter box (21) into two upper and lower cavities.

3. The energy-saving MVR evaporator with heat recovery according to claim 2 is characterized in that: The invention also comprises an extraction and blowing mechanism (6), the extraction and blowing mechanism (6) comprising an extraction and blowing ring (61) movably sleeved outside the second fixed tube (263), a knocking plate (62) being fixedly arranged on the upper end surface of the extraction and blowing ring (61), an elastic telescopic component (63) being fixedly connected to the upper end surface of the extraction and blowing ring (61), the upper end of the elastic telescopic component (63) being fixedly connected to the lower end surface of the first filter screen (221), sealing rings (64) being fixedly connected to the inner ring wall and the outer ring wall of the extraction and blowing ring (61), and the two sealing rings (64) being respectively arranged to contact each other with the second fixed tube (263) and the first fixed tube (222).

4. The energy-saving MVR evaporator with heat recovery according to claim 3 is characterized in that: The suction and blowing mechanism (6) further comprises N first magnet rods (65) and M second magnet rods (66), wherein the N first magnet rods (65) are all fixedly connected to the lower end surface of the suction and blowing ring (61), and the N first magnet rods (65) are arranged in an equidistant ring shape, and the M second magnet rods (66) are all fixedly connected to the rotating rod (262), and the M second magnet rods (66) are arranged in an equidistant ring shape, wherein N is a positive integer greater than or equal to 1, and M is a positive integer greater than or equal to 1.

5. The energy-saving MVR evaporator with heat recovery according to claim 1 is characterized in that: The heat recovery mechanism (3) comprises a heat recovery box (31) fixedly connected to the lower end of the filter box (21), the heat recovery box (31) being fixedly arranged on a support seat (5), and a connecting pipe (32) fixedly plugged into the bottom plate of the filter box (21) and the top plate of the heat recovery box (31) and used for connecting the filter box (21) and the heat recovery box (31), the connecting pipe (32) being fixedly plugged into a first fixed cylinder (33), the first fixed cylinder (33) being fixedly arranged on a first blocking plate (34), the first blocking plate (34) being fixedly arranged on the inner side wall of the heat recovery box (31), Q connecting conduits (35) being fixedly plugged into the first blocking plate (34), the Q connecting conduits (35) being fixedly plugged into the first blocking plate (34), The connecting conduit (35) is externally fixedly plugged onto the second blocking plate (36), the second blocking plate (36) is fixedly connected to the inner wall of the heat recovery box (31), and a second fixed cylinder (38) is fixedly connected to the lower end surface of the second blocking plate (36), wherein a first storage chamber (39) connected to the connecting pipe (32) is formed between the first fixed cylinder (33) and the first blocking plate (34), a heat recovery chamber (37) for steam movement is formed between the first blocking plate (34) and the second blocking plate (36), and a second storage chamber (310) connected to the heat recovery liquid outlet pipe (4) is formed between the second fixed cylinder (38) and the second blocking plate (36), and Q is a positive integer greater than or equal to 1.

6. The energy-saving MVR evaporator with heat recovery according to claim 5, characterized in that: The invention also comprises an anti-deposition mechanism (8), wherein the anti-deposition mechanism (8) comprises a driving assembly connected to the lower end of the rotating rod (262), the driving assembly being interconnected with a supporting plate (84), the supporting plate (84) being movably arranged in the first storage chamber (39), an anti-deposition rod (85) being fixedly connected to the lower end surface of the supporting plate (84), the anti-deposition rod (85) being movably inserted in the connecting conduit (35), and a plurality of anti-deposition brushes (86) being fixedly sleeved outside the anti-deposition rod (85), the anti-deposition brushes (86) being arranged to contact with the inner side wall of the connecting conduit (35), wherein the number of the anti-deposition rods (85) is arranged to match the number of the connecting conduits (35).

7. The energy-saving MVR evaporator with heat recovery according to claim 6 is characterized in that: The anti-deposition mechanism (8) further comprises a guide support assembly (87) having one end connected to the inner top wall of the first fixed cylinder (33) and the other end fixedly connected to the upper end surface of the support plate (84); the guide support assembly (87) comprises a guide support rod (871), a guide support cylinder (872) and a guide support spring (873); the guide support rod (871) is movably inserted into the guide support cylinder (872); the guide support spring (873) is wound around the outside of the guide support rod (871); and the two ends of the guide support spring (873) are respectively fixedly connected to the side wall of the guide support rod (871) and the outer side wall of the guide support cylinder (872).

8. The energy-saving MVR evaporator with heat recovery according to claim 6, characterized in that: The driving assembly comprises a fixed column (81) fixedly connected to the lower end of the rotating rod (262), the fixed column (81) being movably arranged in the connecting tube (32), the fixed column (81) being provided with an inclined surface (82), a resisting rod (83) being provided on the inclined surface (82), the lower end of the resisting rod (83) being fixedly connected to the upper end surface of the supporting plate (84), and the upper end of the resisting rod (83) being provided with a round head structure.

9. The energy-saving MVR evaporator with heat recovery according to claim 6, characterized in that: The invention also comprises a rotating mechanism (9), wherein the rotating mechanism (9) comprises a rotating shaft (91), wherein the rotating shaft (91) is arranged between the supporting plate (84) and the anti-deposition rod (85) and is used to connect the supporting plate (84) and the anti-deposition rod (85) to each other, and wherein the rotating mechanism (9) further comprises a spiral rod (92) fixedly sleeved outside the anti-deposition rod (85), wherein the spiral rod (92) is threadedly inserted into an inner spiral tube (93), wherein a plurality of fixed rods (94) are fixedly connected to the lower end surface of the inner spiral tube (93), and the lower ends of the fixed rods (94) are fixedly connected to the upper end surface of the first blocking plate (34).

Images