Multi-effect evaporator

Abstract

The utility model relates to a multi-effect evaporator which comprises a tank body, the tank body is sequentially provided with a main tank body, a connecting piece and a top cover from bottom to top, and the connecting piece comprises a movable cylinder; the adjusting part is arranged in the tank body and comprises a rubber sealing disc and a vent hole; the sealing ring is arranged outside the adjusting piece and is in contact with the inner wall of the connecting piece; the top plate is arranged at the top end of the adjusting part; the supporting spring is arranged between the top plate and the connecting piece; the lower pressing piece is in threaded connection with the top cover and is in contact with the supporting spring; and the rubber sealing cover is arranged in the top cover. By arranging the adjusting piece, the effect of compressing the inner space of the main tank body is achieved, the inner space of the main tank body can be adjusted according to the actual situation, steam can enter the next heat exchanger more quickly, the staying time of the steam in the main tank body is shortened, and it is guaranteed that heat cannot be lost too much.

Description

Technical Field

[0001] The utility model relates to the technical field of evaporators, and particularly relates to a multi-effect evaporator. Background Art

[0002] A multi-effect evaporator is a device in which multiple evaporators are connected in series, enabling the heat energy of steam to be utilized multiple times, thereby improving the utilization rate of heat energy, and is mostly used for the treatment of aqueous solutions.

[0003] A multi-effect evaporator generally includes a heat exchanger and a separator. According to the position of the separator, it is further divided into a first-effect separator, a second-effect separator, a third-effect separator, etc. Steam exchanges heat with the solution through the heat exchanger and then enters the first-effect separator. After the solution is heated, it generates hot steam, and the hot steam enters the next heat exchanger to exchange heat with the solution in the second-effect separator;

[0004] In the above heat exchange process, the heat in the steam is in a gradually weakening state, that is, the heat of the steam exchanging heat with the solution in the first-effect separator is the highest, the heat of the steam exchanging heat with the solution in the second-effect separator is the second, and the heat of the steam exchanging heat with the solution in the third-effect separator is lower. Most common separators have a fixed volume, that is, the volumes and sizes of multiple separators are the same;

[0005] However, it is found in actual use that the amount of steam separated from the solution in the first-effect separator is relatively large, so there is enough steam volume for transportation when entering the second-effect separator. However, the amount of steam separated from the second-effect separator and entering the third-effect separator is greatly reduced. Therefore, after the pressure in the second-effect separator with a larger volume is sufficient, the hot steam can be transported to the next heat exchanger for heat exchange. This process will cause a large amount of heat consumption of the steam in the third-effect and even the second-effect processes, reducing the heat utilization rate. If the volume is small, it cannot accommodate the feed liquid derived from the first-effect evaporator. Therefore, a multi-effect evaporator is proposed to solve the above-mentioned problems. Content of the Utility Model

[0006] Based on the above description, the utility model provides a multi-effect evaporator to solve the problem that the large volume of the existing evaporator leads to a reduction in heat utilization rate.

[0007] The technical solution for the utility model to solve the above technical problems is as follows: A multi-effect evaporator includes: a tank body, which is sequentially provided with a main tank body, a connecting member, and a top cover from bottom to top. The connecting member includes a movable cylinder. An adjusting member is arranged inside the tank body and includes a rubber sealing disc and a ventilation hole. A sealing ring is arranged outside the adjusting member and is in contact with the inner wall of the connecting member. A top plate is arranged at the top of the adjusting member, and a support spring is arranged between the top plate and the connecting member. A pressing member is threadedly connected to the top cover and is in contact with the support spring. A rubber sealing cover is arranged inside the top cover.

[0008] On the basis of the above technical solution, the utility model can be further improved as follows.

[0009] Further, the connecting piece includes a cover plate, and a connecting pipe and a movable cylinder are successively arranged on the top end of the cover plate from bottom to top, and a side pipe is arranged on the side surface of the connecting pipe.

[0010] Further, a hollow vertical pipe is arranged on the top end of the rubber sealing disc. The diameter of the middle section of the hollow vertical pipe is smaller than that of the two ends. An annular groove is arranged on the outer surface of the hollow vertical pipe. The annular grooves are located on the upper and lower sides of the middle section, and a sealing ring is arranged inside the annular groove.

[0011] Further, ventilation holes are arranged on the outer surface of the middle section of the hollow vertical pipe. The ventilation holes are communicated with the hollow vertical pipe, and a threaded blind hole is arranged on the upper surface of the hollow vertical pipe.

[0012] Further, a shielding column and a mounting groove are arranged on the lower surface of the rubber sealing disc, and a bottom plate is arranged inside the mounting groove.

[0013] Further, the top plate includes a plate body, and a hexagonal groove and a threaded column are respectively arranged on the upper and lower surfaces of the plate body. The threaded column is adapted to the threaded blind hole.

[0014] Further, the top cover includes a top cover body, and a threaded hole is arranged on the upper surface of the top cover body, and a rubber sealing cover is arranged inside the threaded hole.

[0015] Further, the pressing member includes an internal hexagonal threaded rod, which is adapted to the threaded hole. A top block is arranged at the bottom end of the internal hexagonal threaded rod. The diameter of the top block is smaller than the inner diameter of the threaded hole and is in contact with the top plate.

[0016] Compared with the prior art, the technical solution of the present application has the following beneficial technical effects:

[0017] 1. By setting components such as the top cover and the pressing member, and through the cooperation relationship between the pressing member and the top cover, when the pressing member is rotated, the pressing member drives the pressing member to move vertically under the action of screw transmission. When the pressing member moves downward, it squeezes the top plate and the adjusting member, and then the adjusting member moves downward to compress the space in the main tank body;

[0018] 2. By setting the adjusting member, the effect of compressing the internal space of the main tank body is realized, so that the internal space of the main tank body can be adjusted according to the actual situation, the space of the separator with less steam generation is reduced, and it is ensured that the pressure in the main tank body can reach the required value faster. Then the steam can enter the next heat exchanger more quickly, reducing the residence time of the steam in the main tank body to ensure that the heat of the steam will not be lost too much. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 FIG. 1 is a schematic structural view of a multi-effect evaporator provided by an embodiment of the present utility model;

[0020] Figure 2 FIG. Figure 1 is a structural cross-sectional view;

[0021] Figure 3 FIG. Figure 2 is a schematic structural view from another perspective;

[0022] Figure 4 FIG. 3 is a schematic structural view of a connecting member in an embodiment of the present utility model;

[0023] Figure 5 FIG. 4 is a schematic structural view of an adjusting member in an embodiment of the present utility model;

[0024] Figure 6 FIG. Figure 5 is a schematic structural view from another perspective;

[0025] Figure 7 FIG. 5 is a schematic structural view of a top plate in an embodiment of the present utility model;

[0026] Figure 8 FIG. 6 is a schematic structural view of a top cover in an embodiment of the present utility model;

[0027] Figure 9 FIG. 7 is a schematic structural view of a pressing member in an embodiment of the present utility model;

[0028] In the drawings, the list of components represented by each reference numeral is as follows:

[0029] 1, main tank body; 2, connecting member; 21, cover plate; 22, connecting pipe; 23, movable cylinder; 3, adjusting member; 31, rubber sealing disc; 32, hollow vertical pipe; 33, ventilation hole; 34, annular groove; 35, threaded blind hole; 36, shielding column; 37, installation groove; 4, bottom plate; 5, sealing ring; 6, top plate; 61, plate body; 62, hexagonal groove; 63, threaded column; 7, support spring; 8, top cover; 81, top cover main body; 82, threaded hole; 9, pressing member; 91, internal hexagonal threaded rod; 92, top block; 10, rubber sealing cover. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0030] To facilitate understanding of the present application, the present application will be described more comprehensively below with reference to the relevant drawings. Embodiments of the present application are shown in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the disclosure of the present application more thorough and comprehensive.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terms used in the specification of this application are for the purpose of describing specific embodiments only and are not intended to limit this application.

[0032] As used herein, the singular forms "a", "an" and "the" may also include the plural forms unless the context clearly dictates otherwise. It should also be understood that the terms "comprises / comprising" or "has / including" etc. specify the presence of the stated features, wholes, steps, operations, components, parts or combinations thereof, but do not preclude the presence or addition of one or more other features, wholes, steps, operations, components, parts or combinations thereof.

[0033] Please refer to Figures 1-4 and Figure 8 as shown, a multiple-effect evaporator, comprising:

[0034] A tank body, which is sequentially provided with a main tank body 1, a connecting piece 2 and a top cover 8 from bottom to top, and the connecting piece 2 includes a movable cylinder 23;

[0035] The connecting piece 2 includes a cover plate 21, and the top end of the cover plate 21 is sequentially provided with a connecting pipe 22 and a movable cylinder 23 from bottom to top, and a side pipe is arranged on the side of the connecting pipe 22;

[0036] The top cover 8 includes a top cover body 81, a threaded hole 82 is arranged on the upper surface of the top cover body 81, and a rubber sealing cover 10 is arranged inside the threaded hole 82;

[0037] Based on the above, the main tank body 1 functions as a separator, and the connecting piece 2 functions to restrict the movement of the adjusting piece 3, so that the adjusting piece 3 can only move vertically. On the one hand, the top cover 8 functions to block the connecting piece 2, and on the other hand, it cooperates with the pressing piece 9, so that the pressing piece 9 can move vertically under the action of screw drive.

[0038] Such as Figure 2 、 Figure 3 、 Figure 5 and Figure 6 as shown, an adjusting piece 3, which is arranged inside the tank body and includes a rubber sealing disc 31 and a ventilation hole 33;

[0039] A hollow vertical pipe 32 is provided at the top of the rubber sealing disc 31. The diameter of the middle section of the hollow vertical pipe 32 is smaller than that of both ends. An annular groove 34 is provided on the outer surface of the hollow vertical pipe 32. The annular groove 34 is located on both the upper and lower sides of the middle section. A sealing ring 5 is provided inside the annular groove 34. An air vent hole 33 is provided on the outer surface of the middle section of the hollow vertical pipe 32. The air vent hole 33 communicates with the hollow vertical pipe 32. A threaded blind hole 35 is provided on the upper surface of the hollow vertical pipe 32. A shielding column 36 and a mounting groove 37 are provided on the lower surface of the rubber sealing disc 31. A bottom plate 4 is provided inside the mounting groove 37

[0040] The sealing ring 5 is arranged outside the adjusting member 3 and is in contact with the inner wall of the connecting member 2;

[0041] Based on the above, both the rubber sealing disc 31 and the sealing ring 5 play a sealing role, so that the space of the main tank body 1 below the rubber sealing disc 31 is not connected to the space of the main tank body 1 above the rubber sealing disc 31. The hollow vertical pipe 32 and the air vent hole 33 play a role in connecting the side pipe and the main tank body 1, so that steam can flow into the next heat exchanger after passing through the hollow vertical pipe 32 and the connecting pipe 22. The bottom plate 4 and the shielding column 36 cooperate with each other to play a role in blocking water particles in the steam, thereby reducing the content of water particles in the steam.

[0042] As Figures 1-3 、 Figure 7 and Figure 9 shown, a top plate 6 is arranged at the top of the adjusting member 3. The top plate 6 includes a plate body 61. Hexagonal grooves 62 and threaded posts 63 are respectively arranged on the upper and lower surfaces of the plate body 61. The threaded post 63 is adapted to the threaded blind hole 35;

[0043] A support spring 7 is arranged between the top plate 6 and the connecting member 2;

[0044] A pressing member 9 is threadedly connected to the top cover 8 and is in contact with the support spring 7. The pressing member 9 includes an internal hexagonal threaded rod 91. The internal hexagonal threaded rod 91 is adapted to the threaded hole 82. A top block 92 is arranged at the bottom end of the internal hexagonal threaded rod 91. The diameter of the top block 92 is smaller than the inner diameter of the threaded hole 82 and is in contact with the top plate 6;

[0045] A rubber sealing cover 10 is arranged inside the top cover 8;

[0046] Based on the above, after the top plate 6 and the adjusting member 3 are connected to each other, the adjusting member 3 is supported by the support spring 7. When no external force is applied, the adjusting member 3 is in the uppermost state. At this time, the space inside the main tank body 1 is the largest. By turning the pressing member 9, the pressing member 9 moves downward, and then pushes the top plate 6 and the adjusting member 3 downward, thereby realizing the function of changing the size of the space inside the main tank body 1, and the rubber sealing cover 10 plays a sealing role.

[0047] When this embodiment is actually used, after uncovering the rubber sealing cover 10, the pressing member 9 is turned by an inner hexagon wrench, so that the pressing member 9 moves downward under the action of the threaded hole 82, and then pushes the top plate 6 and the adjusting member 3 downward;

[0048] After the adjusting member 3 moves downward, the support spring 7 is compressed by force, and the rubber sealing disc 31 and the seal 5 cooperate with each other to achieve a sealing effect, so that the steam can be discharged from the side pipe after passing through the hollow vertical pipe 32 and the vent hole 33;

[0049] After the adjusting member 3 moves downward, it can compress the space inside the main tank body 1 to ensure that the steam can enter the next heat exchanger for heat exchange faster after being separated from the solution in the main tank body 1, and avoid the situation that the heat is dissipated due to the long residence time of the steam. And through the settings of the bottom plate 4 and the shielding column 36, when the steam flows into the hollow vertical pipe 32, it is blocked by the shielding column 36, and then the fine water particles in the steam are retained, so that the steam entering the heat exchanger is mainly gas, and the situation that the water particles affect the heat exchange effect is avoided;

[0050] Compared with the traditional equipment, this evaporator has the effect of adjustable internal space, and can be adjusted according to the actual situation during the multi-effect evaporation process, so as to ensure the full utilization of steam heat.

[0051] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A multiple-effect evaporator, characterized in that: include: A tank body, which is provided with a main tank body (1), a connecting piece (2) and a top cover (8) in sequence from bottom to top, wherein the connecting piece (2) includes a movable cylinder (23); An adjusting member (3) is arranged inside the tank body and comprises a rubber sealing disc (31) and a vent hole (33); A sealing ring (5), which is arranged outside the adjusting member (3) and contacts the inner wall of the connecting member (2); A top plate (6) disposed on the top of the adjusting member (3); A supporting spring (7) disposed between the top plate (6) and the connecting member (2); A pressing member (9) which is threadedly connected to the top cover (8) and in contact with the supporting spring (7); A rubber sealing cover (10) is arranged inside the top cover (8).

2. The multiple-effect evaporator according to claim 1, characterized in that: The connecting piece (2) comprises a cover plate (21), the top end of which is provided with a connecting pipe (22) and a movable cylinder (23) from bottom to top, and a side pipe is provided on the side of the connecting pipe (22).

3. The multiple-effect evaporator according to claim 1, characterized in that: A hollow vertical tube (32) is arranged at the top end of the rubber sealing disk (31); the diameter of the middle section of the hollow vertical tube (32) is smaller than the diameters of the two ends; an annular groove (34) is arranged on the outer surface of the hollow vertical tube (32); the annular groove (34) is located at the upper and lower sides of the middle section; and a sealing ring (5) is arranged inside the annular groove (34).

4. The multiple-effect evaporator according to claim 3, characterized in that: The outer surface of the middle section of the hollow vertical tube (32) is provided with a vent hole (33), the vent hole (33) is connected to the hollow vertical tube (32), and the upper surface of the hollow vertical tube (32) is provided with a threaded blind hole (35).

5. The multiple-effect evaporator according to claim 4, characterized in that: The lower surface of the rubber sealing disc (31) is provided with a shielding column (36) and a mounting groove (37), and a bottom plate (4) is provided inside the mounting groove (37).

6. The multiple-effect evaporator according to claim 4, characterized in that: The top plate (6) comprises a plate body (61), and the upper and lower surfaces of the plate body (61) are respectively provided with a hexagonal groove (62) and a threaded column (63), and the threaded column (63) is adapted to the threaded blind hole (35).

7. The multiple-effect evaporator according to claim 1, characterized in that: The top cover (8) comprises a top cover body (81), a threaded hole (82) is arranged on the upper surface of the top cover body (81), and a rubber sealing cover (10) is arranged inside the threaded hole (82).

8. The multiple-effect evaporator according to claim 7, characterized in that: The pressing member (9) comprises an inner hexagonal threaded rod (91), the inner hexagonal threaded rod (91) is matched with the threaded hole (82), a top block (92) is arranged at the bottom end of the inner hexagonal threaded rod (91), the diameter of the top block (92) is smaller than the inner diameter of the threaded hole (82), and the top block (92) is in contact with the top plate (6).

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