Efficient evaporator

Abstract

The utility model discloses an efficient evaporator which comprises an outer shell, at least one group of heating structures are arranged in the outer shell from top to bottom, and the heating structures are used for heating and evaporating feed liquid in the outer shell; the material distribution disc is arranged above the heating structure in the outer shell, and the flow distribution structure is at least arranged on the peripheral side of the material distribution disc and used for accelerating material liquid on the top surface of the material distribution disc to uniformly enter and be distributed on the inner wall, on the bottom surface of the material distribution disc, of the outer shell; the problems that when a traditional evaporator heats a solution, the solution is mostly injected into a tank body and a large amount of solution is heated and evaporated at the same time, but the heating evaporation mode is slow in heating evaporation of the solution, and the heating evaporation efficiency is low can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of evaporators, and particularly relates to an efficient evaporator. Background Art

[0002] An evaporator, as an indispensable device in the industrial field, its main function is to vaporize the solvent in the solution by heating the solution, so as to separate the solute from the solvent and achieve the purpose of extracting or concentrating substances. In this process, the evaporator utilizes the difference in vaporization properties of substances at different temperatures to achieve the extraction or concentration of the target substance. However, when the traditional evaporator heats the solution, it mostly injects the solution into the tank body and heats and evaporates a large amount of solution at the same time. However, in this heating and evaporation method, the solution is heated and evaporated slowly, and there is a problem of low heating and evaporation efficiency. Content of the Utility Model

[0003] To overcome the above disadvantages, the purpose of the utility model is to provide an efficient evaporator.

[0004] In order to achieve the above purpose, the technical solutions adopted by the utility model include:

[0005] A housing body, in which at least one set of heating structures is arranged from top to bottom, and the heating structures are used to heat and evaporate the liquid material in the housing body;

[0006] A material distribution plate and a flow splitting structure, the material distribution plate is arranged inside the housing body above the heating structure, and the flow splitting structure is at least arranged on the outer peripheral side of the material distribution plate, and is used to accelerate the uniform entry of the liquid material on the top surface of the material distribution plate and distribute it on the inner wall of the housing body at the bottom of the material distribution plate.

[0007] In the preferred technical solution of the above efficient evaporator, the heating structure at least includes heating plates evenly distributed in the housing body with the axis of the housing body as the center, a first annular pipe with an inlet, and a second annular pipe with an outlet, wherein each heating plate is connected to the first annular pipe and the second annular pipe.

[0008] In the preferred technical solution of the above efficient evaporator, the heating structure is a heating coil evenly distributed on the inner wall of the housing body with the axis of the housing body as the center, and the heating coil has a medium inlet and a medium outlet.

[0009] In the preferred technical solution of the above efficient evaporator, the flow splitting structure is a diversion groove opened on the outer peripheral side of the material distribution plate, and the top end of the diversion groove is inclined and arranged towards the same side.

[0010] In the preferred technical solution of the above efficient evaporator, the cross section of the diversion groove is a bent structure.

[0011] In the preferred technical solution of the above-mentioned high-efficiency evaporator, the shunt structure further includes a pressure roller distributed on the bottom surface of the material distribution plate with the central axis of the material distribution plate as the center, and the pressure roller is in rolling contact with the inner wall of the housing.

[0012] In the preferred technical solution of the above-mentioned high-efficiency evaporator, an elastic member is arranged on the bottom surface of the material distribution plate, and the pressure roller is connected to the end of the elastic member. By means of the elastic force of the elastic member, the pressure roller is pushed to a static state and kept in contact with the inner wall of the housing.

[0013] In the preferred technical solution of the above-mentioned high-efficiency evaporator, the elastic member is a spring or elastic steel.

[0014] In the preferred technical solution of the above-mentioned high-efficiency evaporator, the surfaces of the housing and the material distribution plate are sprayed with a polytetrafluoroethylene coating.

[0015] In the preferred technical solution of the above-mentioned high-efficiency evaporator, the material distribution plate is driven to rotate by a driving device arranged on the top surface of the housing.

[0016] The beneficial effect of the present invention is that the solution entering the housing is subdivided by the material distribution plate, so that a small amount of solution continuously enters the housing and is heated by the heating structure, effectively improving the evaporation efficiency of the solution and the concentration efficiency of the feed liquid. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Schematic diagram of the first embodiment of the heating structure of the present invention;

[0018] Figure 2 Schematic diagram of the second embodiment of the heating structure of the present invention;

[0019] Figure 3 For Figure 1 Schematic diagram of the placement structure of the heating plate in

[0020] Figure 4 Cross-sectional view of the heating plate;

[0021] In the figure: housing 1, feed liquid inlet 11, feed liquid outlet 12, non-condensable gas outlet 13, heating structure 2, heating plate 21, first annular pipe 22, second annular pipe 23, heating coil 24, material distribution plate 3, shunt structure 4, diversion groove 41, pressure roller 42, elastic member 43, driving device 5. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principle of the present invention and are not intended to limit the protection scope of the present invention.

[0023] It should be noted that in the description of the present utility model, the terms indicating directions or positional relationships such as "upper", "lower", "left", "right", "front", and "rear" are based on the directions or positional relationships shown in the drawings. This is only for convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0024] In addition, it should also be noted that in the description of the present utility model, unless otherwise clearly specified and defined, the terms "arranged", "connected", and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection. For those skilled in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0025] As Figures 1 to 4 shown, the high-efficiency evaporator of the present utility model includes: a housing 1, in which at least one set of heating structures 2 is arranged from top to bottom. The heating structure 2 is used to heat and evaporate the liquid material in the housing 1; a material distribution plate 3 and a flow splitting structure 4. The material distribution plate 3 is arranged inside the housing 1 above the heating structure 2, and the flow splitting structure 4 is at least arranged on the outer peripheral side of the material distribution plate 3, and is used to accelerate the uniform entry of the liquid material on the top surface of the material distribution plate 3 and distribute it on the inner wall of the housing 1 at the bottom of the material distribution plate 3.

[0026] See Figure 1 、 Figure 2 , a liquid material inlet 11 is formed at the top of the housing 1, a liquid material outlet 12 is formed at the bottom, and a non-condensable gas outlet 13 is also formed at the bottom. Inside the housing 1, a heat exchange element for accelerating steam liquefaction is arranged in the middle of the heating structure 2. The heat exchange element can be a heat exchange tube with a cold water inlet and a hot water outlet, and the heat exchange tube is arranged inside several heating structures 2.

[0027] See Figure 1 、 Figure 2 , there are multiple heating structures 2 and they are evenly distributed around the central axis of the housing 1. The heating structure 2 can quickly heat the thin film-like liquid material flowing from the material distribution plate 3 to the inner wall of the housing 1, so that the liquid material can be quickly evaporated; See Figure 2, the material distribution plate 3 is arranged inside the outer casing 1 and above the heating structure 2. The outer peripheral side of the material distribution plate 3 is relatively close to the inner wall of the outer casing 1. The material distribution structure is arranged on the outer peripheral side wall of the material distribution plate 3. By means of the material distribution structure, the liquid flowing between the material distribution plate 3 and the outer casing 1 is accelerated, which can improve the rate of the liquid flowing from the inner wall of the outer casing 1 to the bottom of the material distribution plate 3. At the same time, it can ensure the uniform distribution of the liquid on the inner wall of the outer casing 1 and ensure the heating efficiency of the heating structure 2 for the liquid.

[0028] See Figure 1 , when evaporating, concentrating and purifying the liquid, first, the liquid is introduced into the top surface of the material distribution plate 3 through the liquid inlet 11 above the outer casing 1. After the liquid is evenly distributed by the material distribution plate 3 and the material distribution structure, the liquid is evenly distributed in the space below the material distribution plate 3 on the inner wall of the outer casing 1. At the same time, several heating structures 2 arranged relatively close to the inner wall of the outer casing 1 heat the liquid to make the liquid evaporate quickly. The evaporated liquid is condensed by the heat exchange element into liquid droplets and drips to the bottom of the outer casing 1 and is discharged through the liquid outlet 12. The non-condensable gas is discharged through the non-condensable gas outlet 13 arranged at the bottom of the outer casing 1. Through this setting, a liquid with a higher purity can be obtained. At the same time, by accelerating the liquid through the material distribution structure and heating the liquid by at least one set of heating devices, the evaporation and concentration efficiency of the liquid can be effectively improved, which has practicability.

[0029] The first embodiment of the heating structure 2. The heating structure 2 at least includes heating plates 21 evenly distributed in the outer casing 1 with the axis of the outer casing 1 as the center, a first annular pipe 22 with an inlet, and a second annular pipe 23 with an outlet. Among them, each heating plate 21 is connected to both the first annular pipe 22 and the second annular pipe 23.

[0030] See Figure 1 , Figure 3 , Figure 4 , the first embodiment of the heating structure 2 includes a heating plate 21, a first annular pipe 22 and a second annular pipe 23 installed in the outer casing 1; among them, an over-flow channel for liquid flow is formed inside the heating plate 21. The two ends of the over-flow channel of the heating plate 21 are respectively connected to the first annular pipe 22 and the second annular pipe 23. By introducing the heat medium into the inlet of the first annular pipe 22, after the heat medium passes through the over-flow channel of the heating plate 21, it enters the second annular pipe 23 and is discharged through the outlet of the second annular pipe 23, so that the heating plate 21 can evaporate the liquid on the surface of the outer casing 1.

[0031] The second embodiment of the heating structure 2. The heating structure 2 is a heating coil 24 evenly distributed on the inner wall of the outer casing 1 with the axis of the outer casing 1 as the center. The heating coil 24 has a medium inlet and a medium outlet.

[0032] See Figure 2, The second embodiment of the heating structure 2 includes a heating coil 24 disposed inside the outer casing 1. There are multiple heating coils 24 and they are evenly distributed around the central axis of the outer casing 1. The material of the heating coil 24 can be copper, aluminum alloy or stainless steel. When heating and evaporating the liquid material on the inner wall of the outer casing 1, first, a heat medium is introduced into the medium inlet of the heating coil 24. After the heat medium passes through the heating coil 24 to heat the heating coil 24, it flows out through the medium outlet of the heating coil 24. The heated heating coil 24 can evaporate the liquid material on the inner wall of the outer casing 1, and it has the characteristics of simple structure and convenient operation.

[0033] In one or more embodiments, the flow splitting structure 4 is a diversion groove 41 opened on the outer peripheral side of the material distribution plate 3. The top end of the diversion groove 41 is inclined and configured towards the same side; the cross-section of the diversion groove 41 is a bent structure; the flow splitting structure 4 further includes a pressure roller 42 distributed on the bottom surface of the material distribution plate 3 around the central axis of the material distribution plate 3. The pressure roller 42 is in rolling contact with the inner wall of the outer casing 1; an elastic member 43 is disposed on the bottom surface of the material distribution plate 3, and the pressure roller 42 is connected to the end of the elastic member 43. With the elastic force of the elastic member 43, the pressure roller 42 is pushed to a stationary state and remains in contact with the inner wall of the outer casing 1; the material distribution plate 3 is driven to rotate by a driving device 5 disposed on the top surface of the outer casing 1.

[0034] See Figure 1 , Figure 2 , The driving device 5 is a servo motor, and the material distribution plate 3 is driven to rotate by the servo motor; the outer peripheral side of the material distribution plate 3 can be attached to the inner wall of the outer casing 1, or the distance between the outer peripheral side of the material distribution plate 3 and the inner wall of the outer casing 1 can be 1 - 5 mm; a plurality of diversion grooves 41 opened on the outer peripheral side of the material distribution plate 3 and inclined towards the same side can allow the liquid material at the top of the material distribution plate 3 to enter the space below the material distribution plate 3 inside the outer casing 1. In addition, by configuring the diversion groove 41 into a bent structure so that the diversion groove 41 is roughly in the shape of ">", it can make the liquid material form a buffer in the diversion groove 41 and avoid the problem that the liquid material flies out of the inner wall of the outer casing 1 due to excessive centrifugal force. A pressure roller 42 is disposed at the bottom of the material distribution plate 3 through the elastic member 43. The pressure roller 42 contacts the inner wall of the outer casing 1 and is in rolling contact with the inner wall of the outer casing 1. When the material distribution plate 3 is driven to rotate by the servo motor, the pressure roller 42 can roll-press the liquid material on the inner wall of the outer casing 1 flowing to the lower part of the material distribution plate 3, making the liquid material in a film shape, further improving the evaporation efficiency of the liquid material and the concentration and purification efficiency of the liquid material, and having practicability.

[0035] In one or more embodiments, the elastic member 43 is a spring or elastic steel.

[0036] In one or more embodiments, the outer casing 1 and the material distribution plate 3 are sprayed with a polytetrafluoroethylene coating. Polytetrafluoroethylene has a certain self-lubricating effect, which can accelerate the flow rate of the liquid material on the surfaces of the outer casing 1 and the material distribution plate 3, reduce the possibility of the liquid material adhering to the inner wall of the outer casing 1 and the material distribution plate 3, and improve the use effect of the present application.

[0037] The above embodiments are only for illustrating the technical concept and characteristics of the present invention, and the purpose is to enable those who are familiar with this technology to understand the content of the present invention and implement it. However, it should not be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit and essence of the present invention should be covered within the protection scope of the present invention.

Claims

1. An efficient evaporator, characterized in that, Comprising: An outer housing, within which at least one set of heating structures is arranged from top to bottom, and the heating structures are used to heat and evaporate the liquid material within the outer housing; A material distribution plate and a flow splitting structure, the material distribution plate is arranged inside the outer housing above the heating structures, and the flow splitting structure is at least arranged on the outer peripheral side of the material distribution plate, and is used to accelerate the uniform entry of the liquid material on the top surface of the material distribution plate and distribute it on the inner wall of the outer housing at the bottom surface of the material distribution plate.

2. The high-efficiency evaporator according to claim 1, wherein: The heating structure at least includes heating plates uniformly distributed in the outer housing centered on the axis of the outer housing, a first annular pipe with an inlet, and a second annular pipe with an outlet, wherein each heating plate is connected to the first annular pipe and the second annular pipe.

3. The high-efficiency evaporator according to claim 1, wherein: The heating structure is a heating coil uniformly distributed on the inner wall of the outer housing centered on the axis of the outer housing, and the heating coil has a medium inlet and a medium outlet.

4. The high-efficiency evaporator according to claim 1, wherein: The flow splitting structure is a diversion groove opened on the outer peripheral side of the material distribution plate, and the top end of the diversion groove is inclined and arranged towards the same side.

5. The high-efficiency evaporator according to claim 4, characterized in that: The cross-section of the diversion groove is a bent structure.

6. The high-efficiency evaporator according to claim 4 or 5, characterized in that: The flow splitting structure further includes a pressing roller distributed on the bottom surface of the material distribution plate centered on the central axis of the material distribution plate, and the pressing roller is in rolling contact with the inner wall of the outer housing.

7. The high-efficiency evaporator according to claim 6, wherein: An elastic member is arranged on the bottom surface of the material distribution plate, and the pressing roller is connected to the end of the elastic member. By means of the elastic force of the elastic member, the pressing roller is pushed to a stationary state and kept in contact with the inner wall of the outer housing.

8. The high-efficiency evaporator according to claim 7, wherein: The elastic member is a spring or elastic steel.

9. The high-efficiency evaporator according to claim 1, wherein: The surfaces of the outer housing and the material distribution plate are sprayed with a polytetrafluoroethylene coating.

10. The high-efficiency evaporator according to claim 1, wherein: The material distribution plate is driven to rotate by a driving device arranged on the top surface of the outer housing.

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