Multi-effect mechanical vapor recompression (MVR) evaporator anti-blocking tube bundle structure of integrated roots compressor

Abstract

The utility model relates to the technical field of evaporators, in particular to a multi-effect mechanical vapor recompression (MVR) evaporator anti-blocking tube bundle structure of an integrated Roots compressor, which comprises a pipeline body, a fixing seat and a fixing screw, a mounting part is arranged on a bent tube part of the pipeline body, a stretching-in groove is arranged on the mounting part, a stretching-in part is arranged on the fixing seat, and the fixing screw is arranged in the stretching-in groove. The fixing base is installed on the installation part through a fixing screw so that the stretching-in part can stretch into the inner side of the bent pipe part through the stretching-in groove, and the first side face of the stretching-in part inclines towards the coming direction of fluid in the pipeline body. According to the anti-blocking tube bundle structure of the evaporator, the first side face of the stretching-in part of the fixing base is located on the inner side of the bent tube part and serves as a flow guide face for fluid on the inner side of the bent tube part, then the fluid on the inner side of the bent tube part flows towards the middle of the bent tube part along the first side face of the stretching-in part, and therefore the flow speed of fluid feed liquid passing through the bent tube part is increased; the problems that crystal deposition is prone to being generated on the inner side of the bent pipe part, and a pipeline body is blocked are solved.

Description

Technical Field

[0001] This utility model relates to the field of evaporator technology, and more specifically to an anti-clogging tube bundle structure for a multi-effect MVR evaporator with an integrated Roots compressor. Background Technology

[0002] An MVR evaporator is an evaporator that uses a Roots compressor to compress and increase the pressure of the secondary steam generated during the evaporation process, raising its temperature and enthalpy value, and then re-inputting it into the heating chamber as a heat source, forming a closed-loop system.

[0003] According to publication number CN205850268U, publication date: January 4, 2017, a heat exchanger tube bundle installation structure with reasonable design, simple structure, convenient installation and disassembly, and the ability to quickly disassemble, inspect, replace or repair heat exchanger tubes at any time is disclosed. This utility model includes a tube sheet and heat exchanger tubes. The quick-disassembly heat exchanger tube bundle installation structure also includes through-hole bolts and sealing rings. A threaded groove is provided in the middle of the tube sheet. The through-hole bolts and the sealing rings are respectively adapted and disposed in the threaded groove. A first through hole is provided on the bottom surface of the threaded groove. The through-hole bolts, the sealing rings, and the first through hole are sequentially adapted and disposed on the heat exchanger tubes. The sealing rings are disposed between the bottom surface of the threaded groove and the bottom end of the through-hole bolt.

[0004] In the prior art, including the aforementioned patents, pipe bodies are used as the main pipelines for conveying liquid materials. However, in actual production line layouts, due to space limitations, only pipe bodies with 90-degree bends can be used to convey the liquid materials required by the evaporator. When the liquid material passes through the bend of the pipe, the flow rate of the liquid material near the inside of the bend slows down, which can easily lead to crystal deposition on the inside of the bend of the pipe body and cause pipe blockage. Utility Model Content

[0005] The purpose of this invention is to provide an anti-clogging tube bundle structure for a multi-effect MVR evaporator integrated with a Roots compressor, in order to solve the above-mentioned problems.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a multi-effect MVR evaporator anti-clogging tube bundle structure integrating a Roots compressor, including a pipe body, a fixed seat, and fixed screws. The pipe body has an installation part on the bend section, and the installation part has an insertion groove. The fixed seat has an insertion part. The fixed seat is installed on the installation part by fixed screws so that the insertion part extends into the inside of the bend section through the insertion groove, and the first side of the insertion part is inclined towards the direction of the fluid in the pipe body.

[0007] Preferably, the end of the inserted portion is provided with a flexible cap.

[0008] Preferably, the device also includes a drive rod and a sliding seat. The drive rod is rotatably arranged on the fixed seat, and the sliding seat is slidably arranged in the mounting cavity opened on the fixed seat. The threaded column portion provided on the drive rod is threadedly engaged with the sliding seat. The drive rod is driven to rotate so as to drive the sliding seat to slide and push the flexible cap to deform and arch outwards towards the extension portion.

[0009] Preferably, the device also includes a heat-insulating base with a fixing part, the fixing part having a through hole, and the heat-insulating base being used to enclose and clamp the outside of the bend section via the fixing part and bolts.

[0010] Preferably, the heat preservation base is provided with a clamping part, which clamps the periphery of the drive rod.

[0011] Preferably, an arc-shaped guide groove is provided on the second side of the extended portion.

[0012] Preferably, a sealing ring is also included, which is fixedly disposed in a mounting groove on the mounting base and abuts against the mounting part.

[0013] Preferably, the fixed base has a rotating hole, and the drive rod is rotatably disposed in the rotating hole.

[0014] Preferably, the sliding seat is made of Teflon.

[0015] Preferably, the drive rod is made of Teflon.

[0016] In the above technical solution, the anti-clogging tube bundle structure of the multi-effect MVR evaporator of the integrated Roots compressor provided by this utility model has the following beneficial effects: The first side of the extension portion of the fixed seat is located inside the bend to serve as a guide surface for the fluid inside the bend, thereby allowing the fluid inside the bend to flow along the first side of the extension portion towards the middle of the bend. This increases the flow velocity of the fluid as it passes through the bend, alleviating the problem of crystal deposition and blockage that easily occurs inside the bend. Furthermore, when the fluid passes over the extension portion, a vortex is formed behind the extension portion. The shear force generated by this vortex further peels off the crystals deposited on the rear side of the extension portion, further preventing crystal deposition and blockage within the bend. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0018] Figure 1A schematic diagram of the overall structure provided for an embodiment of this utility model;

[0019] Figure 2 This is a schematic cross-sectional view of the overall structure provided for an embodiment of the present utility model;

[0020] Figure 3 This is a schematic diagram of the overall exploded structure provided for an embodiment of the present utility model;

[0021] Figure 4 This is a schematic diagram of the structure of the pipe body provided in an embodiment of the present utility model;

[0022] Figure 5 An exploded structural diagram of the fixed base, flexible cap, sliding base, and drive rod provided in an embodiment of this utility model;

[0023] Figure 6 An exploded structural diagram of the fixed base, flexible cap, sliding base, drive rod, and sealing ring provided in the embodiment of this utility model;

[0024] Figure 7 Provided for the embodiments of this utility model Figure 2 A magnified view of a portion of point A in the middle.

[0025] Explanation of reference numerals in the attached figures:

[0026] 1. Pipe body; 11. Bend; 12. Mounting part; 13. Insertion groove; 14. First threaded hole; 2. Fixing seat; 21. Insertion part; 22. Mounting cavity; 23. Flow guide groove; 24. Rotating hole; 25. Mounting groove; 3. Fixing screw; 4. Flexible cap; 41. Abutment groove; 5. Sliding seat; 51. Pushing part; 52. Second threaded hole; 6. Drive rod; 61. Threaded column; 7. Sealing ring; 8. Insulation seat; 81. Fixing part; 82. Clamping part. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this disclosure. All other embodiments obtained by those skilled in the art based on the described embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0028] like Figure 1-7As shown, a multi-effect MVR evaporator anti-clogging tube bundle structure integrating a Roots compressor includes a pipe body 1, a fixing seat 2, and fixing screws 3. The pipe body 1 has a mounting part 12 on the bend 11, and the mounting part 12 has an insertion groove 13. The fixing seat 2 has an insertion part 21. The fixing seat 2 is installed on the mounting part 12 by fixing screws 3 so that the insertion part 21 extends into the inside of the bend 11 through the insertion groove 13, and the first side of the insertion part 21 is inclined towards the direction of the fluid in the pipe body 1.

[0029] Specifically, such as Figure 4 As shown, an insertion groove 13 and a first threaded hole 14 are provided on the mounting part 12 of the pipe body 1, and a through hole is also provided on the fixing seat 2, so that the fixing screw 3 can pass through the through hole of the fixing seat 2 and be threaded into the first threaded hole 14, thereby using the fixing screw 3 to install the fixing seat 2 and the pipe body 1 as a whole. Figure 7 As shown, the upper side of the extension 21 is the first side, which faces the direction of the fluid in the pipe body 1. That is, the fluid in the pipe body 1 flows from left to right and passes through the bend 11. At this time, the first side of the extension 21 is located inside the bend 11, serving as a guide surface for the fluid inside the bend 11. This allows the fluid inside the bend 11 to flow along the first side of the extension 21 towards the middle of the bend 11, thereby increasing the flow velocity of the fluid as it passes through the bend 11 and alleviating the problem of crystal deposition and blockage of the pipe body 1 caused by the bend 11. When the fluid passes over the extension 21, a vortex is formed behind the extension 21. The shear force generated by the vortex can further peel off the crystals deposited on the rear side of the extension 21, thereby further preventing crystal deposition and blockage in the bend 11.

[0030] In the above technical solution, the first side of the extension portion 21 of the fixing seat 2 is located inside the bend portion 11 to serve as a guide surface for the fluid inside the bend portion 11. This allows the fluid inside the bend portion 11 to flow along the first side of the extension portion 21 towards the center of the bend portion 11, thereby increasing the flow velocity of the fluid as it passes through the bend portion 11 and alleviating the problem of crystal deposition and blockage of the pipe body 1 that is prone to occur inside the bend portion 11. When the fluid passes over the extension portion 21, a vortex is formed behind the extension portion 21. The shear force generated by the vortex can further peel off the crystals deposited on the rear side of the extension portion 21, thereby further avoiding crystal deposition and blockage problems inside the bend portion 11.

[0031] As a further embodiment provided in this utility model, a flexible cap 4 is provided at the end of the insertion portion 21.

[0032] Specifically, such as Figure 7As shown, a flexible cap 4 is provided in the extension part 21. The flexible cap 4 is located at the point of maximum flow velocity in the bend part 11, so that the flexible cap 4 can be deformed and buffered by the flow of fluid, reducing the shear force and peeling of the end of the extension part 21 by the fluid, and improving the service life of the extension part 21.

[0033] As a further embodiment of this utility model, it also includes a drive rod 6 and a sliding seat 5. The drive rod 6 is rotatably arranged on the fixed seat 2, and the sliding seat 5 is slidably arranged in the mounting cavity 22 opened on the fixed seat 2. The threaded post 61 provided on the drive rod 6 is threadedly engaged with the sliding seat 5. The drive rod 6 is driven to rotate so as to drive the sliding seat 5 to slide and push the flexible cap 4 to deform and arch outward of the extension portion 21.

[0034] Specifically, such as Figure 5 As shown, the sliding seat 5 is provided with a pushing part 51, and the sliding seat 5 is also provided with a second threaded hole 52, as shown. Figure 7 As shown, the threaded post 61 of the drive rod 6 is threadedly engaged with the second threaded hole 52 of the sliding seat 5. When the machine is stopped for maintenance, the drive rod 6 can be rotated to make the sliding seat 5 slide in the mounting cavity 22. The pushing part 51 of the sliding seat 5 slides against the contact groove 41 of the flexible cap 4, so that the flexible cap 4 can further deform and arch towards the outside of the bend section 11, thereby further increasing the flow velocity and eddy current generation speed inside the bend section 11, thereby further impacting and peeling off the crystals inside the bend section 11, thus facilitating actual maintenance and use.

[0035] As a further embodiment of this utility model, it also includes a heat insulation seat 8, on which a fixing part 81 is provided. The fixing part 81 has a through hole. The heat insulation seat 8 is connected to the outside of the bent pipe part 11 by the fixing part 81 and bolts.

[0036] Specifically, such as Figure 2 As shown, the insulation base 8 is provided with multiple fixing parts 81, and two insulation bases 8 can be installed and connected to each other by bolts, so that the two insulation bases 8 wrap around the outside of the bent pipe 11 to insulate the bent pipe 11 and alleviate the problem of fluid liquid cooling and crystallization caused by excessive temperature loss in the bent pipe 11.

[0037] As a further embodiment of this utility model, the heat preservation base 8 is provided with a clamping part 82, which clamps the drive rod 6 around its periphery.

[0038] Specifically, such as Figure 1 As shown, when the two insulation seats 8 are installed to the outside of the bend section 11 by bolts, the clamping part 82 clamps the periphery of the drive rod 6 to rotate and lock the drive rod 6, so as to prevent the flexible cap 4 from deforming and arching due to accidental rotation of the drive rod 6 during actual operation, thereby improving the conveying stability of the fluid material in the bend section 11.

[0039] As a further embodiment provided in this utility model, an arc-shaped guide groove 23 is provided on the second side of the extension portion 21.

[0040] Specifically, such as Figure 7 As shown, the side of the extension 21 facing away from the direction of the fluid in the pipe body 1 is the second side. The guide groove 23 opened on the second side of the extension 21 is arc-shaped and concave. Since eddies are easily generated on the second side of the extension 21 due to the difference in fluid velocity, the presence of the guide groove 23 is used to further increase the velocity of the eddies generated there, thereby improving the stripping efficiency of the eddies formed there on the deposited crystals, and further alleviating the blockage problem caused by deposited crystals in the bend 11.

[0041] As a further embodiment of this utility model, a sealing ring 7 is also provided, which is fixedly disposed in the mounting groove 25 opened on the fixing base 2, and the sealing ring 7 abuts against the mounting part 12.

[0042] Specifically, the sealing ring 7 is glued to the mounting groove 25 of the fixing seat 2. When the fixing seat 2 is locked to the mounting part 12 of the pipe body 1 by the fixing screw 3, the sealing ring 7 abuts against the mounting part 12 to achieve a seal between the extension part 21 and the extension groove 13, so as to prevent the fluid material in the pipe body 1 from leaking out.

[0043] As a further embodiment of this utility model, the fixed base 2 is provided with a rotating hole 24, and the drive rod 6 is rotatably disposed in the rotating hole 24.

[0044] Specifically, the drive rod 6 is rotatably mounted on the rotation hole 24 of the fixed base 2 to improve the rotational stability of the drive rod 6.

[0045] As a further embodiment provided in this utility model, the sliding seat 5 is made of Teflon.

[0046] Specifically, the sliding seat 5 is made of Teflon to improve its wear resistance and extend its service life.

[0047] As a further embodiment provided in this utility model, the drive rod 6 is made of Teflon.

[0048] Specifically, drive rod 6 is made of Teflon to improve its wear resistance and extend its service life.

[0049] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A multi-effect MVR evaporator anti-clogging tube bundle structure integrating a Roots compressor, characterized in that, The device includes a pipe body (1), a fixing seat (2), and a fixing screw (3). The pipe body (1) has a mounting part (12) on the bend (11) and an insertion groove (13) on the mounting part (12). The fixing seat (2) has an insertion part (21). The fixing seat (2) is installed on the mounting part (12) by the fixing screw (3) so that the insertion part (21) extends into the inside of the bend (11) through the insertion groove (13), and the first side of the insertion part (21) is inclined toward the direction of the fluid inside the pipe body (1).

2. The anti-clogging tube bundle structure for the multi-effect MVR evaporator of the integrated Roots compressor according to claim 1, characterized in that, The end of the extension (21) is provided with a flexible cap (4).

3. The anti-clogging tube bundle structure for the multi-effect MVR evaporator of the integrated Roots compressor according to claim 2, characterized in that, It also includes a drive rod (6) and a sliding seat (5). The drive rod (6) is rotatably arranged on the fixed seat (2), and the sliding seat (5) is slidably arranged in the mounting cavity (22) opened on the fixed seat (2). The threaded column (61) provided on the drive rod (6) is threadedly engaged with the sliding seat (5). The drive rod (6) is driven to rotate so as to drive the sliding seat (5) to slide against the flexible cap (4) and deform and arch outward to the outside of the extension part (21).

4. The anti-clogging tube bundle structure for the multi-effect MVR evaporator of the integrated Roots compressor according to claim 3, characterized in that, It also includes a heat insulation seat (8), on which a fixing part (81) is provided. The fixing part (81) has a through hole. The heat insulation seat (8) is connected to the outside of the bent pipe part (11) by the fixing part (81) and bolts.

5. The anti-clogging tube bundle structure for the multi-effect MVR evaporator of the integrated Roots compressor according to claim 4, characterized in that, The heat preservation base (8) is provided with a clamping part (82), which clamps the drive rod (6) around its periphery.

6. The anti-clogging tube bundle structure for the multi-effect MVR evaporator of the integrated Roots compressor according to claim 1, characterized in that, An arc-shaped guide groove (23) is provided on the second side of the extension (21).

7. The anti-clogging tube bundle structure for the multi-effect MVR evaporator of the integrated Roots compressor according to claim 1, characterized in that, It also includes a sealing ring (7) fixedly installed in the mounting groove (25) opened on the fixing seat (2), and the sealing ring (7) abuts against the mounting part (12).

8. The anti-clogging tube bundle structure for the multi-effect MVR evaporator of the integrated Roots compressor according to claim 3, characterized in that, The fixed base (2) has a rotating hole (24), and the drive rod (6) is rotatably disposed in the rotating hole (24).

9. The anti-clogging tube bundle structure for the multi-effect MVR evaporator of the integrated Roots compressor according to claim 3, characterized in that, The sliding seat (5) is made of Teflon.

10. The anti-clogging tube bundle structure for the multi-effect MVR evaporator of the integrated Roots compressor according to claim 3, characterized in that, The drive rod (6) is made of Teflon.

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