Mvr circulating evaporator

Abstract

This utility model discloses an MVR circulating evaporator, comprising a first cylinder, an evaporation cylinder, a second cylinder, and a compressor. An inlet pipe is fixedly connected to the first cylinder, a feed pipe is fixedly connected to the evaporation cylinder, and a connecting pipe is fixedly connected to the evaporation cylinder. A discharge pipe is fixedly connected to the second cylinder. A first gas supply pipe is fixedly connected to the input end of the compressor, and a second gas supply pipe is fixedly connected to the output end of the compressor. A first circular tube is fixedly connected to the outer surface of the evaporation cylinder, and a second circular tube is fixedly connected to the outer surface of the second cylinder. By using bolts, nuts, and positioning blocks, this design segments the circular tubes, allowing the positioning blocks, connecting rings, and filter plates to be removed from the first and second circular tubes respectively. This enables regular cleaning and maintenance of the filter plates, ensuring both effective filtration and efficient liquid flow.

Description

Technical Field

[0001] This utility model relates to the field of evaporators, and in particular to an MVR circulating evaporator. Background Technology

[0002] MVR circulating evaporator is a high-efficiency and energy-saving evaporation device. Its core principle is to use a mechanical compressor to recompress the secondary steam generated by evaporation, increase its temperature and pressure, and then use it as a heat source again, thereby reducing the demand for fresh steam from the outside and significantly reducing energy consumption.

[0003] A search revealed application number 202222240871.3, which describes an MVR circulating evaporator. The evaporator has a cylinder a1 containing water. A heating device is activated to heat the water in cylinder a1. Water vapor enters the evaporator cylinder 3 through the inlet pipe 13. The mother liquor feedstock enters the evaporator cylinder 3 through the feed pipe 11. The mother liquor first flows onto the guide plate 12, which directs it onto the baffle plate 15. The mother liquor then flows through the through-hole a on the baffle plate 15 to the mounting part 16 below. From there, the mother liquor flows through the through-hole b into multiple thin circular tubes 17. A water film forms on the inner wall of the thin circular tubes 17, increasing the contact area with the hot steam in the evaporator cylinder 3, thus evaporating the water in the mother liquor. After the hot steam comes into contact with multiple thin circular tubes 17, its temperature decreases and it enters the cylinder b10 through the circular tube b14. The concentrated mother liquor flows along the thin circular tubes 17 to the lower end of the evaporation cylinder 3. The mother liquor flows through the circular tube a4 into the cylinder b10. The filter mechanism 18 blocks impurities in the mother liquor. The processed raw material flows out through the discharge pipe 5 at the lower end of the cylinder b10. The steam enters the compressor through the gas delivery pipe a inside the cylinder b10. After being compressed under high pressure, the steam temperature rises and is then transported back to the evaporation cylinder 3 through the gas delivery pipe b9 for reuse, reducing the burden on the cylinder a1. In this utility model, the steam can be recycled, reducing the steam transport in the cylinder a1 and further reducing energy consumption.

[0004] The above solution uses a filtration mechanism to block impurities in the mother liquor. However, after a period of use, a certain amount of impurities will inevitably adhere to the surface of the filtration mechanism. These impurities will not only affect the filtration effect of the filtration mechanism, but also affect the flow of the mother liquor. However, the filtration mechanism is located inside the circular tube, which makes it inconvenient to clean and maintain it. This may result in impurities remaining inside the device for a long time, affecting the operational stability of the entire system. Summary of the Invention

[0005] The purpose of this invention is to provide an MVR circulating evaporator that uses segmented circular tubes, allowing the positioning blocks, connecting rings, and filter plates to be removed from the first and second circular tubes respectively. This enables regular cleaning and maintenance of the filter plates, ensuring the filtration effect and liquid flow.

[0006] To achieve the above objectives, an MVR circulating evaporator is provided, comprising a first cylinder, an evaporation cylinder, a second cylinder, and a compressor. An inlet pipe is fixedly connected to the first cylinder, a feed pipe is fixedly connected to the evaporation cylinder, and a connecting pipe is fixedly connected to the evaporation cylinder. A discharge pipe is fixedly connected to the second cylinder. A first gas supply pipe is fixedly connected to the input end of the compressor, and a second gas supply pipe is fixedly connected to the output end of the compressor. A first circular tube is fixedly connected to the outer surface of the evaporation cylinder, and a second circular tube is fixedly connected to the outer surface of the second cylinder. The first and second circular tubes are fixedly connected to the same docking box. A positioning block is movably connected to the inner surface of the docking box. A connecting ring is fixedly connected to the inner surface of the positioning block. A filter plate is fixedly connected to the inner surface of the connecting ring. Two first sealing rings are fixedly connected to the inner surface of the connecting ring. Second sealing rings are fixedly connected to the inner surfaces of both the first and second circular tubes.

[0007] Two connecting blocks are fixedly connected to the front surface of the docking box, and two docking blocks are fixedly connected to the front surface of the positioning block. The two connecting blocks and the two docking blocks are movably connected to the same bolt, and the outer surface of the bolt is threaded with a nut.

[0008] According to the MVR circulating evaporator, the end of the air inlet pipe away from the first cylinder is fixedly connected to the evaporation cylinder, and the end of the connecting pipe away from the evaporation cylinder is fixedly connected to the second cylinder.

[0009] According to the MVR circulating evaporator, the end of the second gas supply pipe away from the compressor is fixedly connected to the evaporator cylinder, and the outer surface of the first gas supply pipe is fixedly connected to the second cylinder body.

[0010] According to the MVR circulating evaporator, the upper surface of the nut is in contact with the connecting block, and the two first sealing rings are in contact with the two second sealing rings respectively.

[0011] According to the MVR circulating evaporator, the docking box is provided with a positioning groove, and the outer surface of the positioning block is movably connected to the positioning groove.

[0012] According to the MVR circulating evaporator, the docking block is provided with a docking groove, and the outer surface of the bolt is movably connected to the docking groove.

[0013] According to the MVR circulating evaporator, the connecting block has a mating hole, and the outer surface of the bolt is movably connected to the mating hole.

[0014] The above-mentioned solution has the following beneficial effects:

[0015] 1. By using bolts, nuts, and positioning blocks, this solution divides the circular tube into sections, allowing the positioning blocks, connecting rings, and filter plates to be removed from the first and second circular tubes respectively. This enables regular cleaning and maintenance of the filter plates, ensuring the filtration effect and the flow of liquid.

[0016] 2. By setting up structures such as the first sealing ring and the second sealing ring, the sealing between the connecting ring and the first and second round pipes can be ensured, thereby preventing liquid leakage and ensuring the normal operation of the structure.

[0017] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of an MVR circulating evaporator according to the present invention.

[0019] Figure 2 This is a schematic diagram of the docking box portion of an MVR circulating evaporator according to this utility model.

[0020] Figure 3 This is a structural schematic diagram of the cross-sectional portion of the docking box of an MVR circulating evaporator according to this utility model.

[0021] Figure 4 This is a structural schematic diagram of the positioning block section of an MVR circulating evaporator according to the present invention.

[0022] Legend:

[0023] 1. First cylinder; 2. Evaporator cylinder; 3. Second cylinder; 4. Compressor; 5. Inlet pipe; 6. Feed pipe; 7. Connecting pipe; 8. Discharge pipe; 9. First gas delivery pipe; 10. First round pipe; 11. Second round pipe; 12. Docking box; 13. Positioning block; 14. Connecting ring; 15. Filter plate; 16. First sealing ring; 17. Second sealing ring; 18. Connecting block; 19. Docking block; 20. Bolt; 21. Nut; 22. Positioning groove; 23. Second gas delivery pipe; 24. Docking hole; 25. Docking groove. Detailed Implementation

[0024] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0025] Reference Figure 1-4 This utility model discloses an MVR circulating evaporator, comprising a first cylinder 1, an evaporation cylinder 2, a second cylinder 3, and a compressor 4. An inlet pipe 5 is fixedly connected to the first cylinder 1. A feed pipe 6 and a connecting pipe 7 are fixedly connected to the evaporation cylinder 2. The end of the inlet pipe 5 away from the first cylinder 1 is fixedly connected to the evaporation cylinder 2. The end of the connecting pipe 7 away from the evaporation cylinder 2 is fixedly connected to the second cylinder 3. A discharge pipe 8 is fixedly connected to the second cylinder 3. A first gas supply pipe 9 is fixedly connected to the input end of the compressor 4. A second gas supply pipe 23 is fixedly connected to the output end of the compressor 4. The end of the second gas supply pipe 23 away from the compressor 4 is fixedly connected to the evaporation cylinder 2. The outer surface of the first gas supply pipe 9 is fixedly connected to the second cylinder 3. A first circular pipe 10 is fixedly connected to the outer surface of the evaporation cylinder 2. A second circular pipe 10 is fixedly connected to the outer surface of the second cylinder 3. The first circular tube 10 and the second circular tube 11 are fixedly connected to the same docking box 12. The inner surface of the docking box 12 is movably connected to the positioning block 13. The inner surface of the positioning block 13 is fixedly connected to the connecting ring 14. The inner surface of the connecting ring 14 is fixedly connected to the filter plate 15. The inner surface of the connecting ring 14 is fixedly connected to two first sealing rings 16. The inner surfaces of the first circular tube 10 and the second circular tube 11 are both fixedly connected to the second sealing rings 17. The two first sealing rings 16 are in contact with the two second sealing rings 17 respectively. The docking box 12 is provided with a positioning groove 22. The outer surface of the positioning block 13 is movably connected to the positioning groove 22. It should be noted that the specific connection method and working principle between the structures of this scheme are existing mature technologies. For details, please refer to the patent document with application number 202222240871.3. It will not be elaborated here.

[0026] Two connecting blocks 18 are fixedly connected to the front surface of the docking box 12, and two docking blocks 19 are fixedly connected to the front surface of the positioning block 13. The same bolt 20 is movably connected to the two connecting blocks 18 and the two docking blocks 19. A nut 21 is threadedly connected to the outer surface of the bolt 20. The upper surface of the nut 21 is in contact with the connecting block 18. A docking groove 25 is provided on the docking block 19. The outer surface of the bolt 20 is movably connected to the docking groove 25. A docking hole 24 is provided on the connecting block 18. The outer surface of the bolt 20 is movably connected to the docking hole 24.

[0027] Working principle: By rotating the nut 21, the bolt 20 can be unscrewed, thus releasing the bolt 20 from its fixation. The bolt 20 can then be removed from the connecting block 18 and the mating block 19, releasing the fixing of the positioning block 13. Pulling the mating block 19 allows the positioning block 13, connecting ring 14, and mating block 19 to be pulled out of the mating box 12. This allows for cleaning and maintenance of the filter plate 15, ensuring its filtration and flow efficiency. After cleaning, the positioning block 13 is reinserted into the positioning groove 22 on the mating box 12. Once the positioning block 13 is fully inserted into the positioning groove 22... This allows the mating hole 24 on the connecting block 18 to correspond with the mating groove 25 on the mating block 19. Then, the bolt 20 is inserted into the mating hole 24 and the mating groove 25, and the nut 21 is screwed back onto the bolt 20 and tightened. This completes the connection and fixation between the positioning block 13 and the mating box 12, allowing the filter plate 15 to perform the filtering work stably. After the filter plate 15 is installed, the first sealing ring 16 and the second sealing ring 17 will come into contact with each other. Under the action of the first sealing ring 16 and the second sealing ring 17, the sealing between the connecting ring 14 and the first round tube 10 and the second round tube 11 can be ensured, preventing leakage.

[0028] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. An MVR circulating evaporator, comprising: The system comprises a first cylinder (1), an evaporator cylinder (2), a second cylinder (3), and a compressor (4). An inlet pipe (5) is fixedly connected to the first cylinder (1). A feed pipe (6) is fixedly connected to the evaporator cylinder (2). A connecting pipe (7) is fixedly connected to the evaporator cylinder (2). A discharge pipe (8) is fixedly connected to the second cylinder (3). A first gas delivery pipe (9) is fixedly connected to the input end of the compressor (4). A second gas delivery pipe (23) is fixedly connected to the output end of the compressor (4). The system is characterized in that a first circular pipe (10) is fixedly connected to the outer surface of the evaporator cylinder (2), and the second... A second round tube (11) is fixedly connected to the outer surface of the cylinder (3). The same docking box (12) is fixedly connected to the first round tube (10) and the second round tube (11). A positioning block (13) is movably connected to the inner surface of the docking box (12). A connecting ring (14) is fixedly connected to the inner surface of the positioning block (13). A filter plate (15) is fixedly connected to the inner surface of the connecting ring (14). Two first sealing rings (16) are fixedly connected to the inner surface of the connecting ring (14). A second sealing ring (17) is fixedly connected to the inner surface of both the first round tube (10) and the second round tube (11). Two connecting blocks (18) are fixedly connected to the front surface of the docking box (12), and two docking blocks (19) are fixedly connected to the front surface of the positioning block (13). The two connecting blocks (18) and the two docking blocks (19) are movably connected to the same bolt (20), and the outer surface of the bolt (20) is threaded with a nut (21).

2. The MVR circulating evaporator according to claim 1, characterized in that, The end of the air inlet pipe (5) away from the first cylinder (1) is fixedly connected to the evaporator cylinder (2), and the end of the connecting pipe (7) away from the evaporator cylinder (2) is fixedly connected to the second cylinder (3).

3. The MVR circulating evaporator according to claim 1, characterized in that, The end of the second gas pipe (23) away from the compressor (4) is fixedly connected to the evaporator (2), and the outer surface of the first gas pipe (9) is fixedly connected to the second cylinder (3).

4. The MVR circulating evaporator according to claim 1, characterized in that, The upper surface of the nut (21) is in contact with the connecting block (18), and the two first sealing rings (16) are in contact with the two second sealing rings (17) respectively.

5. An MVR circulating evaporator according to claim 1, characterized in that, The docking box (12) is provided with a positioning groove (22), and the outer surface of the positioning block (13) is movably connected to the positioning groove (22).

6. The MVR circulating evaporator according to claim 1, characterized in that, The docking block (19) has a docking groove (25), and the outer surface of the bolt (20) is movably connected to the docking groove (25).

7. An MVR circulating evaporator according to claim 1, characterized in that, The connecting block (18) has a mating hole (24), and the outer surface of the bolt (20) is movably connected to the mating hole (24).

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