Falling film evaporator for treating salt-containing wastewater

Abstract

The utility model discloses a salt-containing wastewater treatment falling film evaporator which comprises a storage tank, a connecting pipe, a heating mechanism and a mounting mechanism, and the heating mechanism is used for forming a heating structure on the connecting pipe and heating gas in an inner cavity of the connecting pipe. And the mounting mechanism is used for forming a fixing structure between the heating mechanism and the connecting pipe and mounting the heating mechanism on the connecting pipe. The two installation shells are arranged outside the connecting pipe in a surrounding mode, the fixing blocks on the two installation shells are arranged in an up-down staggered mode, then the connecting rod is inserted between the fixing blocks in a sliding mode, the other end of the movable rod is pushed to be inserted into an inner cavity of the installation hole in a sliding mode through the elastic effect of the compression spring, and the movable rod is limited and fixed. And the two mounting shells are stably mounted, so that the multiple heating pipes are arranged outside the connecting pipe in a surrounding mode, steam flowing through an inner cavity of the connecting pipe is evenly heated, and the phenomenon that the steam is condensed in the conveying process is prevented.

Description

Technical Field

[0001] The utility model relates to the field of wastewater treatment, and particularly relates to a falling film evaporator for treating saline wastewater. Background Technique

[0002] Falling film evaporation is to add the feed liquid from the upper tube box of the heating chamber of the falling film evaporator, and through the liquid distribution and film-forming device, evenly distribute it into each heat exchange tube. Under the action of gravity, vacuum induction and air flow, it flows down in a uniform film shape. When treating wastewater with a high salt content, a falling film evaporator is used to reduce the salt content in the wastewater steam.

[0003] When a common falling film evaporator works, steam is transported through a connecting pipe. Due to the long length of the connecting pipe, when the steam flows in the inner cavity of the connecting pipe, the heat in the steam will be lost, which easily causes the temperature of the steam to decrease. When the steam contacts the inner wall of the connecting pipe, condensation will occur, resulting in damage and waste of the steam. Content of the Utility Model

[0004] The purpose of the utility model is to provide a falling film evaporator for treating saline wastewater to solve the problems put forward in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical scheme: A falling film evaporator for treating saline wastewater, including a storage tank;

[0006] A connecting pipe, which is arranged between adjacent storage tanks;

[0007] It further includes a heating mechanism, which is arranged on the connecting pipe. The heating mechanism is used to form a temperature-rising structure on the connecting pipe and heat the gas in the inner cavity of the connecting pipe;

[0008] An installation mechanism, which is arranged on the heating mechanism. The installation mechanism is used to form a fixing structure between the heating mechanism and the connecting pipe and install the heating mechanism on the connecting pipe.

[0009] Preferably, the heating mechanism includes:

[0010] An installation shell, which is slidably inserted and connected with the connecting pipe, and the installation shell is arranged around the outside of the connecting pipe;

[0011] Heating pipes, which are arranged in an annular array at equal intervals in the inner cavity of the installation shell, and both ends of the heating pipes are fixedly connected with the inner wall of the installation shell.

[0012] Preferably, the heating mechanism further includes:

[0013] A limiting ring, the limiting ring is fixedly inserted and connected with the connecting pipe, and the upper surface of the limiting ring is attached to the lower surface of the mounting shell;

[0014] A positioning column, the top end of the positioning column is fixedly connected to the lower surface of the mounting shell, and the positioning column is slidably inserted and connected with the limiting ring.

[0015] Preferably, the mounting mechanism includes:

[0016] A fixing block, one end of the fixing block is fixedly connected to one side of the outer wall of the mounting shell, and the fixing blocks are arranged in a vertically staggered manner;

[0017] A connecting rod, the connecting rod is slidably inserted and connected with the fixing block, and the connecting rods are arranged on both sides of the mounting shell;

[0018] A mounting hole, the mounting hole is arranged at the bottom of the connecting rod.

[0019] Preferably, the mounting mechanism further includes:

[0020] A mounting groove, the mounting groove is arranged on both sides of the limiting ring;

[0021] A movable rod, one end of the movable rod is slidably inserted and connected with the inner cavity of the mounting groove, and the other end of the movable rod is slidably inserted and connected with the inner cavity of the mounting hole;

[0022] A compression spring, the compression spring is arranged in the inner cavity of the mounting groove, and one end of the compression spring is attached to one end of the movable rod.

[0023] Preferably, a clamping block is fixedly connected to the bottom of the outer wall of one end of the movable rod, and a clamping groove is formed on one side of the lower surface of the limiting ring, and the inner cavity of the clamping groove is slidably inserted and connected with the clamping block.

[0024] The technical effects and advantages of the present utility model:

[0025] The present utility model utilizes the setting method of the cooperation of the mounting shell, the heating pipe, the limiting block, the fixing block, the connecting rod, the movable rod and the mounting hole. By arranging two mounting shells around the outside of the connecting pipe, moving the mounting shell, driving the positioning column to slide and penetrate into the top of the limiting ring, and the fixing blocks on one side of the two mounting shells are arranged in a vertically staggered manner, then sliding the connecting rod between the fixing blocks on the two mounting shells, rotating the connecting rod to align the mounting hole with the movable rod, and using the elastic action of the compression spring to push the other end of the movable rod to slide and penetrate into the inner cavity of the mounting hole to limit and fix the movable rod, ensuring the stable installation of the two mounting shells, so that a plurality of heating pipes are arranged around the outside of the connecting pipe, uniformly heating the steam flowing through the inner cavity of the connecting pipe, and preventing the phenomenon of steam condensation during the transportation process. Description of the Drawings

[0026] Figure 1 This is a schematic diagram of the overall structure of the present utility model.

[0027] Figure 2 This is a schematic diagram of the structure at the installation shell of the present utility model.

[0028] Figure 3 This is a schematic diagram of the front sectional structure at the installation shell of the present utility model.

[0029] Figure 4 This is the present utility model Figure 3 Schematic diagram of the enlarged structure at position A.

[0030] In the figure: 1, storage tank; 2, connecting pipe; 3, heating mechanism; 31, installation shell; 32, heating pipe; 33, limiting ring; 34, positioning column; 4, installation mechanism; 41, fixing block; 42, connecting rod; 43, installation hole; 44, installation groove; 45, movable rod; 46, compression spring. Specific embodiments

[0031] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0032] The present utility model provides a falling film evaporator for treating saline wastewater as Figures 1-4 shown, which includes a storage tank 1, a connecting pipe 2, a heating mechanism 3 and an installation mechanism 4. The storage tank 1 is used for treating steam. The connecting pipe 2 is arranged between adjacent storage tanks 1, and adjacent two storage tanks 1 are connected through the connecting pipe 2 for steam transportation. The heating mechanism 3 is arranged on the connecting pipe 2. The heating mechanism 3 is used to form a temperature-rising structure on the connecting pipe 2 and heat the gas in the inner cavity of the connecting pipe 2. The steam flowing through the inner cavity of the connecting pipe 2 is heated by the heating mechanism 3 to prevent the steam from condensing during transportation. The installation mechanism 4 is arranged on the heating mechanism 3. The installation mechanism 4 is used to form a fixing structure between the heating mechanism 3 and the connecting pipe 2 and install the heating mechanism 3 on the connecting pipe 2. The installation mechanism 4 facilitates the stable installation of the heating mechanism 3 on the connecting pipe 2.

[0033] Specifically, the heating mechanism 3 includes a mounting shell 31, a heating pipe 32, a limiting ring 33, and a positioning column 34. The mounting shell 31 is slidably inserted into the connecting pipe 2. The mounting shell 31 is arranged around the outside of the connecting pipe 2 and is in a semi-cylindrical shape with a groove formed in the middle. By docking two mounting shells 31, a circular tube is formed around the outside of the connecting pipe 2, and the inner wall of the groove fits against the outer wall of the connecting pipe 2. The heating pipes 32 are arranged in an annular array at equal intervals in the inner cavity of the mounting shell 31. The two ends of the heating pipes 32 are fixedly connected to the inner wall of the mounting shell 31. The heating pipes 32 are electrically connected to an external power supply through an external switch. A plurality of heating pipes 32 are arranged around the outside of the connecting pipe 2 to uniformly heat the steam flowing through the inner cavity of the connecting pipe 2. The limiting ring 33 is fixedly inserted into the connecting pipe 2, and the upper surface of the limiting ring 33 fits against the lower surface of the mounting shell 31. The limiting ring 33 is used to support and mount the mounting shell 31. The top end of the positioning column 34 is fixedly connected to the lower surface of the mounting shell 31, and the positioning column 34 is slidably inserted into the limiting ring 33. The positioning column 34 moves together with the mounting shell 31 and is used to limit the position of the mounting shell 31, facilitating the alignment of the connecting rod 42 and the movable rod 45. By arranging two mounting shells 31 around the outside of the connecting pipe 2 and moving the mounting shell 31, the positioning column 34 is slidably inserted into the top of the limiting ring 33, and the mounting shell 31 is stably arranged on the limiting ring 33, so that a plurality of heating pipes 32 are arranged around the outside of the connecting pipe 2 to uniformly heat the steam flowing through the inner cavity of the connecting pipe 2.

[0034] Furthermore, the installation mechanism 4 includes a fixed block 41, a connecting rod 42, a mounting hole 43, a mounting groove 44, a movable rod 45, and a compression spring 46. One end of the fixed block 41 is fixedly connected to one side of the outer wall of the mounting shell 31. The fixed blocks 41 are arranged in a staggered manner up and down. By splicing the two mounting shells 31, the fixed blocks 41 on one side of the two mounting shells 31 are arranged in a staggered manner up and down. The fixed block 41 is used to install the connecting rod 42. The connecting rod 42 is slidably inserted into the fixed block 41. The connecting rod 42 is arranged on both sides of the mounting shell 31. By slidably inserting the connecting rod 42 between the fixed blocks 41 on the two mounting shells 31, the two mounting shells 31 are stably installed. The mounting hole 43 is arranged at the bottom of the connecting rod 42. The mounting hole 43 is used to connect the movable rod 45. The mounting groove 44 is arranged on both sides of the limiting ring 33. The mounting groove 44 is used to install the movable rod 45. One end of the movable rod 45 is slidably inserted into the inner cavity of the mounting groove 44. The other end of the movable rod 45 is slidably inserted into the inner cavity of the mounting hole 43. The other end of the movable rod 45 is arranged in a hemispherical shape. By slidably inserting the other end of the movable rod 45 into the inner cavity of the mounting hole 43, the movable rod 45 is limited and fixed. The compression spring 46 is arranged in the inner cavity of the mounting groove 44. One end of the compression spring 46 is in contact with one end of the movable rod 45. The compression spring 46 is used to push the movable rod 45 to one side, so that one end of the movable rod 45 is slidably inserted into the inner cavity of the mounting hole 43. A clamping block is fixedly connected to the bottom of the outer wall of one end of the movable rod 45. The clamping block moves together with the movable rod 45. A clamping groove is formed on one side of the lower surface of the limiting ring 33. The inner cavity of the clamping groove is slidably inserted into the clamping block. As the movable rod 45 moves, the clamping block is driven to slide in the inner cavity of the clamping groove, preventing the movable rod 45 from separating from the limiting ring 33. By splicing the two mounting shells 31, the fixed blocks 41 on one side of the two mounting shells 31 are arranged in a staggered manner up and down. Then, the connecting rod 42 is slidably inserted between the fixed blocks 41 on the two mounting shells 31. The connecting rod 42 is rotated to align the mounting hole 43 with the movable rod 45. By using the elastic action of the compression spring 46, the other end of the movable rod 45 is pushed to slide into the inner cavity of the mounting hole 43 to limit and fix the movable rod 45, ensuring the stable installation of the two mounting shells 31.

[0035] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. 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 falling film evaporator for treating saline wastewater, comprising: Storage tank (1); A connecting pipe (2), wherein the connecting pipe (2) is arranged between adjacent storage tanks (1); The invention is characterized in that it also comprises a heating mechanism (3), wherein the heating mechanism (3) is arranged on the connecting pipe (2), and the heating mechanism (3) is used to form a temperature-raising structure on the connecting pipe (2) and to heat the gas in the inner cavity of the connecting pipe (2); A mounting mechanism (4) is arranged on the heating mechanism (3), and the mounting mechanism (4) is used to form a fixed structure between the heating mechanism (3) and the connecting pipe (2) and to mount the heating mechanism (3) on the connecting pipe (2).

2. A falling film evaporator for treating saline wastewater according to claim 1, characterized in that: The heating mechanism (3) comprises: A mounting shell (31), the mounting shell (31) being slidably interlaced with the connecting tube (2), and the mounting shell (31) being disposed around the outside of the connecting tube (2); The heating tubes (32) are arranged in an annular array at equal intervals in the inner cavity of the mounting shell (31), and both ends of the heating tubes (32) are fixedly connected to the inner wall of the mounting shell (31).

3. A falling film evaporator for treating saline wastewater according to claim 2, characterized in that: The heating mechanism (3) further comprises: A limiting ring (33), the limiting ring (33) is fixedly inserted and connected to the connecting pipe (2), and the upper surface of the limiting ring (33) is in contact with the lower surface of the mounting shell (31); A positioning column (34), the top end of which is fixedly connected to the lower surface of the mounting shell (31), and the positioning column (34) is slidably and interlacedly connected to the limiting ring (33).

4. A falling film evaporator for treating saline wastewater according to claim 3, characterized in that: The mounting mechanism (4) comprises: A fixing block (41), one end of which is fixedly connected to one side of the outer wall of the mounting shell (31), and the fixing blocks (41) are arranged in an up-and-down staggered manner; A connecting rod (42), the connecting rod (42) is slidably connected to the fixing block (41), and the connecting rod (42) is arranged on both sides of the mounting shell (31); A mounting hole (43) is provided at the bottom of the connecting rod (42).

5. A falling film evaporator for treating saline wastewater according to claim 4, characterized in that: The mounting mechanism (4) further comprises: Installation grooves (44), the installation grooves (44) being arranged on both sides of the limiting ring (33); A movable rod (45), one end of which is slidably connected to the inner cavity of the mounting groove (44), and the other end of which is slidably connected to the inner cavity of the mounting hole (43); A compression spring (46) is arranged in the inner cavity of the installation groove (44), and one end of the compression spring (46) is in contact with one end of the movable rod (45).

6. A falling film evaporator for treating saline wastewater according to claim 5, characterized in that: A clamping block is fixedly connected to the bottom of the outer wall at one end of the movable rod (45), and a clamping groove is provided on one side of the lower surface of the limiting ring (33). The inner cavity of the clamping groove is slidably interlaced with the clamping block.

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