A device for the removal of foam from an evaporative crystallization system

Abstract

The utility model belongs to defoaming equipment technical field especially is concerned about a kind of defoaming device for evaporation crystallization system, including tank body, the cover plate being arranged above tank body and the air inlet pipe being arranged below tank body, the cover plate is detachably installed on tank body;The defoaming device is detachably equipped in the tank body, and the positioning ring for supporting defoamer is equipped in the position corresponding to the lower part of defoamer on tank body, and the exhaust pipe is equipped in the position corresponding to the upper part of defoamer on tank body;The defoaming device includes chassis and wire mesh being arranged on chassis, the connecting pipe is equipped in the middle part of chassis, the position corresponding to assembly hole is equipped with several inside spray holes on the connecting pipe, and one end of connecting pipe passes through assembly hole is equipped with detachable spray cover.The defoaming device for evaporation crystallization system of the utility model can carry out all-around spray cleaning to wire mesh by built-in spray cover, is favorable for improving the defoaming effect of wire mesh, reduces the replacement and maintenance frequency of wire mesh.

Description

Technical Field

[0001] This utility model belongs to the technical field of defoaming equipment, and in particular relates to a defoaming device for an evaporation crystallization system. Background Technology

[0002] MVR evaporation crystallization systems are widely used in chemical, pharmaceutical, and environmental protection fields due to their high efficiency and energy-saving characteristics. Among them, the gas-liquid separation equipment is a key component, responsible for effectively separating the secondary steam generated by evaporation from the concentrated liquid, ensuring the stable operation of the steam compressor.

[0003] Currently, gas-liquid separators in MVR systems mostly employ traditional structures such as gravity settling, centrifugal separation, or wire mesh demisters. However, traditional demisters are not adaptable to complex materials (including crystalline particles, high salt content, or organic matter) and are prone to failure due to scaling or corrosion. For example, wire mesh demisters are easily clogged by salt droplets, requiring frequent cleaning. However, simply spraying the wire mesh from the outside is not very effective, and adding external spraying equipment can hinder demister assembly, making demister replacement and maintenance inconvenient and compromising the demisting performance of the wire mesh demister. Utility Model Content

[0004] In view of this, the present invention aims to provide a defoaming device for an evaporation crystallization system to solve the problem that the existing demister spray cleaning effect is not good, resulting in inconvenience in replacement and maintenance.

[0005] To achieve the above objectives, the technical solution of this utility model is implemented as follows:

[0006] A demisting device for an evaporation crystallization system includes a tank, a cover plate mounted on top of the tank, and an air inlet pipe mounted below the tank. The cover plate is detachably mounted on the tank. A detachable demister is installed inside the tank. A positioning ring for supporting the demister is located on the tank below the demister, and an exhaust pipe is located on the tank above the demister. The demister includes a base frame and a wire mesh mounted on the base frame. A connecting pipe is located in the middle of the base frame. The wire mesh has mounting holes that mate with the connecting pipe. The connecting pipe has several inner spray holes corresponding to the mounting holes. A detachable spray hood is located at one end of the connecting pipe passing through the mounting holes. The spray hood also has several air passage holes located above the wire mesh. The spray hood has several outer spray holes on one side facing the wire mesh, and a liquid supply pipe on the other side supplies liquid to the outer spray holes and the connecting pipe. One end of the liquid supply pipe is located on the spray hood, and the other end passes through the cover plate.

[0007] Furthermore, the spray hood is provided with a liquid guiding cavity for connecting the liquid supply pipe and the outer spray hole.

[0008] Furthermore, the connecting pipe and the liquid supply pipe are connected by a threaded connection.

[0009] Furthermore, the cover plate is connected to the tank body by a flange.

[0010] Furthermore, the base frame is provided with a positioning block, and the positioning ring is provided with a positioning groove that cooperates with the positioning block.

[0011] Furthermore, at least two positioning blocks are evenly arranged along the circumference of the base frame, and the positioning slots are arranged in a one-to-one correspondence with the positioning blocks.

[0012] Furthermore, the positioning groove is an arc groove.

[0013] Furthermore, the end of the connecting pipe that passes through the base frame is provided with a removable sealing cap, and at least two demisters are provided at intervals along the axial direction of the tank body, with the liquid supply pipes on adjacent demisters connected by a connecting pipe.

[0014] Compared with the prior art, the defoaming device for an evaporation crystallization system described in this utility model has the following advantages:

[0015] The defogging device for an evaporation crystallization system described in this invention can perform all-around spray cleaning of the wire mesh through a built-in spray hood, which helps to improve the defogging effect of the wire mesh and reduces the frequency of wire mesh replacement and maintenance. At the same time, by adopting a detachable spray hood structure, operators can easily assemble and disassemble the spray hood and the wire mesh, reducing the difficulty of replacing and maintaining this defogging device. Attached Figure Description

[0016] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:

[0017] Figure 1 This is a schematic diagram of the internal structure of a defoaming device for an evaporation crystallization system according to an embodiment of the present invention;

[0018] Figure 2 This is an exploded structural diagram of a demister in a demister device for an evaporation crystallization system according to an embodiment of the present invention;

[0019] Figure 3 This is a schematic diagram of the internal structure of a demisting device for an evaporation crystallization system according to an embodiment of the present invention, in which two layers of demisters are provided.

[0020] Explanation of reference numerals in the attached figures:

[0021] 1. Tank body; 2. Positioning ring; 3. Base frame; 4. Wire mesh; 5. Spray hood; 6. Liquid supply pipe; 7. Liquid guiding cavity; 8. Connecting pipe; 9. Sealing cover; 10. Air inlet pipe; 11. Exhaust pipe; 12. Cover plate; 13. Positioning block; 14. Positioning groove; 15. Inner spray hole; 16. Outer spray hole; 17. Assembly hole; 18. Air passage hole; 19. Through hole. Detailed Implementation

[0022] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0023] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0025] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0026] A defoaming device for an evaporation crystallization system, such as Figures 1 to 3As shown, the device includes a tank body 1, a cover plate 12 mounted on top of the tank body 1, and an air inlet pipe 10 mounted below the tank body 1. The cover plate 12 is detachably mounted on the tank body 1. A detachable demister is installed inside the tank body 1. A positioning ring 2 for supporting the demister is provided on the tank body 1 at a position corresponding to the lower part of the demister. An exhaust pipe 11 is provided on the tank body 1 at a position corresponding to the upper part of the demister. The demister includes a base frame 3 and a wire mesh 4 mounted on the base frame 3. A connecting pipe 8 is provided in the middle of the base frame 3, and the wire mesh 4 is connected to the connecting pipe 8. The connecting pipe 8 has a plurality of inner spray holes 15 corresponding to the mounting hole 17. One end of the connecting pipe 8 passing through the mounting hole 17 is provided with a detachable spray hood 5. The spray hood 5 also has a plurality of air vents 18 corresponding to the position above the wire mesh 4. The spray hood 5 has a plurality of outer spray holes 16 on one side facing the wire mesh 4, and a liquid supply pipe 6 on the other side to supply liquid to the outer spray holes 16 and the connecting pipe 8. One end of the liquid supply pipe 6 is attached to the spray hood 5, and the other end passes through the cover plate 12. The air inlet pipe 10 and the exhaust pipe 11 are both fixed to the tank body 1 and are connected to the tank body 1.

[0027] Specifically, the liquid supply pipe 6 is fixed to the cover plate 12, the connecting pipe 8 is threaded to the liquid supply pipe 6, and the cover plate 12 is flanged to the tank body 1. This connection method allows for detachable connections between the connecting pipe 8 and the liquid supply pipe 6, and between the cover plate 12 and the tank body 1. Those skilled in the art can also select other suitable detachable connection methods according to actual needs to achieve detachable connections between the connecting pipe 8 and the liquid supply pipe 6, and between the cover plate 12 and the tank body 1; these will not be elaborated upon here. In actual use, by using the detachable cover plate 12, operators can first remove the cover plate 12, and then detach the spray hood 5 from the connecting pipe 8. Operators can first use the cover plate 12 to remove the demister from the tank body 1 for disassembly, or they can directly rotate the cover plate 12 and rotate the liquid supply pipe 6 to achieve disassembly. This makes operation more convenient and reduces the difficulty of replacing and maintaining the demister.

[0028] In practical applications, the liquid supply pipe 6 is fixed on the spray hood 5. The spray hood 5 has a liquid guiding cavity 7 for connecting the liquid supply pipe 6 and the outer spray hole 16. The connecting pipe 8 is fixed on the base frame 3. The wire mesh 4 can be made of corrosion-resistant metal wire mesh 4 such as titanium alloy wire mesh 4. The base frame 3 has through holes 19 for easy ventilation. By fitting the wire mesh 4 onto the connecting column, not only can the wire mesh 4 be limited and fixed, ensuring that the wire mesh 4 can continuously defoam the airflow flowing upward through the base frame 3, but also by using an external liquid supply device to pump cleaning fluid into the liquid supply pipe 6, the wire mesh 4 can be sprayed and cleaned in all directions using the inner spray hole 15 and the outer spray hole 16, which is beneficial to improving the defoaming effect of the wire mesh 4 and reducing the frequency of replacement and maintenance of the wire mesh 4.

[0029] Preferably, the base frame 3 is provided with positioning blocks 13, and the positioning ring 2 is provided with positioning grooves 14 that cooperate with the positioning blocks 13. Specifically, at least two positioning blocks 13 are evenly arranged along the circumference of the base frame 3, and the positioning grooves 14 are provided one-to-one with the positioning blocks 13. For example, two positioning blocks 13 can be evenly arranged, each positioning block 13 is fixed on the base frame 3, and two corresponding positioning grooves 14 are also provided. By utilizing the cooperation between the positioning blocks 13 and the positioning grooves 14, the stability of the base frame 3 on the positioning ring 2 is improved, and it is convenient for the operator to detachably assemble the liquid supply pipe 6 and the connecting pipe 8 by rotating the cover plate 12, which helps to further reduce the assembly difficulty of the demister.

[0030] In practical applications, the positioning groove 14 is an arc groove. By using an arc groove as the positioning groove 14, the operator can easily rotate and adjust the position of the cover plate 12 while the base frame 3 can rotate, which facilitates the assembly of the liquid supply pipe 6 and the connecting pipe 8, so as to achieve a detachable connection between the cover plate 12 and the tank body 1.

[0031] Optionally, the positioning ring 2 can be fixed on the tank body 1, and a reinforcing plate can also be fixed on the tank body 1 at the position corresponding to the lower part of the positioning ring 2 to improve the stability of the positioning ring 2 in the tank body 1 and ensure that the positioning ring 2 can continuously and stably support the demister.

[0032] Preferably, the end of the connecting pipe 8 that passes through the base frame 3 is provided with a removable sealing cap 9. At least two demisters are arranged at intervals along the axial direction of the tank body 1, and the supply pipes 6 on adjacent demisters are connected by the connecting pipe 8. Exemplarily, the sealing cap 9 and the connecting pipe 8 can also be connected by threads, so that the connecting pipe 8 can be connected to the supply pipe 6 after the sealing cap 9 is removed. Those skilled in the art can also choose other suitable methods to install the sealing cap 9 according to actual needs, which will not be elaborated here.

[0033] In practical applications, two demisters can be installed at intervals. The tank 1 can adopt a split structure, including an upper tank 1 and a lower tank 1 for installing the two demisters respectively. The upper tank 1 and the lower tank 1 can be connected by a flange to facilitate the disassembly of the demisters. The liquid supply pipe 6 of the upper demister is fixed on the cover plate 12, and the liquid supply pipe 6 of the lower demister is connected to the connecting pipe 8 of the upper demister to realize the liquid supply of the upper and lower demisters.

[0034] The defogging device for an evaporation crystallization system described in this invention can perform all-around spray cleaning of the wire mesh through a built-in spray hood, which helps to improve the defogging effect of the wire mesh and reduces the frequency of wire mesh replacement and maintenance. At the same time, by adopting a detachable spray hood structure, operators can easily assemble and disassemble the spray hood and the wire mesh, reducing the difficulty of replacing and maintaining this defogging device.

[0035] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A defoaming device for an evaporation crystallization system, characterized in that: The system includes a tank body (1), a cover plate (12) installed on top of the tank body (1), and an air inlet pipe (10) installed below the tank body (1). The cover plate (12) is detachably installed on the tank body (1). A detachable demister is installed inside the tank body (1). A positioning ring (2) for supporting the demister is provided on the tank body (1) at a position corresponding to the lower position of the demister. An exhaust pipe (11) is provided on the tank body (1) at a position corresponding to the upper position of the demister. The demister includes a base frame (3) and a wire mesh (4) installed on the base frame (3). A connecting pipe (8) is provided in the middle of the base frame (3). The wire mesh (4) is provided with a fitting for the connecting pipe (8). The assembly hole (17) is provided with a plurality of inner spray holes (15) on the connecting pipe (8) corresponding to the position of the assembly hole (17). One end of the connecting pipe (8) passing through the assembly hole (17) is provided with a detachable spray cover (5). The spray cover (5) is also provided with a plurality of air holes (18) corresponding to the position above the wire mesh (4). The spray cover (5) is provided with a plurality of outer spray holes (16) on one side facing the wire mesh (4), and the other side is provided with a liquid supply pipe (6) for supplying liquid to the outer spray holes (16) and the connecting pipe (8). One end of the liquid supply pipe (6) is set on the spray cover (5), and the other end passes through the cover plate (12).

2. The defoaming device for an evaporation crystallization system according to claim 1, characterized in that: The spray hood (5) is provided with a liquid guiding cavity (7) for connecting the liquid supply pipe (6) and the outer spray hole (16).

3. The defoaming device for an evaporation crystallization system according to claim 1, characterized in that: The connecting pipe (8) and the liquid supply pipe (6) are connected by threads.

4. A defoaming device for an evaporation crystallization system according to claim 1, characterized in that: The cover plate (12) is connected to the tank body (1) by a flange.

5. A defoaming device for an evaporation crystallization system according to any one of claims 1-4, characterized in that: The base frame (3) is provided with a positioning block (13), and the positioning ring (2) is provided with a positioning groove (14) that cooperates with the positioning block (13).

6. A defoaming device for an evaporation crystallization system according to claim 5, characterized in that: At least two positioning blocks (13) are evenly arranged along the circumference of the base frame (3), and the positioning grooves (14) are arranged in a one-to-one correspondence with the positioning blocks (13).

7. A defoaming device for an evaporation crystallization system according to claim 6, characterized in that: The positioning groove (14) is an arc groove.

8. A defoaming device for an evaporation crystallization system according to claim 1, characterized in that: The connecting pipe (8) has a removable sealing cap (9) at one end that passes through the base frame (3). At least two demisters are arranged at intervals along the axial direction of the tank body (1). The liquid supply pipes (6) on two adjacent demisters are connected by the connecting pipe (8).

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