Heating jacket for evaporator

Abstract

The utility model discloses a heating jacket for an evaporator in the technical field of evaporators. The heating jacket comprises an evaporator barrel and a jacket body arranged on the periphery of the evaporator barrel, a heating cavity is formed between the evaporator barrel and the jacket body, a heating medium is introduced into the heating cavity, the jacket body is provided with a heating medium inlet and a heating medium outlet, and the heating medium inlet and the heating medium outlet are both communicated with the heating cavity; the jacket is provided with a plurality of partition plates for dividing the heating cavity into a plurality of small cavities, and the partition plates are arranged at intervals in the length direction of the jacket; each small cavity is internally provided with a plurality of flow guide plates, the flow guide plates are arranged between the evaporator barrel and the jacket, one end of each flow guide plate is connected with the inner wall of one side of the corresponding small cavity, a circulation interval is reserved between the other end of each flow guide plate and the inner wall of the other side of the corresponding small cavity, and an S-shaped circulation channel is formed among the circulation intervals of the flow guide plates. The heat exchanger has the advantage that the heat transfer efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of evaporators, in particular to a heating jacket for an evaporator. Background Art

[0002] At present, most industrial and mining enterprises will produce a large amount of wastewater containing salt, organic matter and complex components. When the salt and COD in the wastewater reach a certain value, it cannot be directly treated by biochemical methods. At this time, membrane filtration, multi-effect evaporation, MVR and other methods are usually used to concentrate and reduce the amount, and then biochemical treatment is used to meet the standards or fresh water reuse. The concentrated water produced in the concentration and reduction process is treated separately; if the viscosity of the wastewater is very high and the salt content is very high, membrane, multi-effect and MVR methods cannot be used to reduce the amount. At this time, a concentration kettle with stirring can be used for further concentration and reduction, and then biochemical treatment or fresh water reuse is used. The residue or residual liquid produced in the concentration process is disposed of by incineration or landfilling. The concentration kettle is used to evaporate the water in the waste liquid by heating. The heating method is generally a jacket, which is arranged on the periphery of the concentration kettle body. Hot water or steam is introduced into the jacket for heating, so that the waste liquid inside the concentration kettle body is heated and the water in the waste liquid is evaporated; however, since the concentration kettle body is generally arranged vertically, the surface area for evaporation is insufficient and the evaporation efficiency is average;

[0003] Therefore, the prior art discloses a jacket structure of a thin film evaporator, with an authorization announcement number of CN219355266U and an authorization announcement date of 20230718. The jacket structure mainly includes an evaporator cylinder, a support ring, a motor side cylinder flange, a sight glass side cylinder flange and a jacket outer cylinder. The thin film evaporator jacket structure connecting pipe mainly includes a first section jacket outlet, a countercurrent vacuum port, a second section jacket outlet, a downstream vacuum port, a third section jacket outlet, a third section jacket inlet, a concentration port, a second section jacket inlet, a first section jacket inlet and a feed port. The sight glass side cylinder flange and the motor side cylinder flange are respectively located at both ends of the evaporator cylinder. The support ring is located on the outside of the evaporator cylinder and is connected to the outer wall of the evaporator cylinder. The jacket outer cylinder is connected to the outside of the support ring. The two ends of the outer cylinder of the jacket are respectively connected to the cylinder flange on the sight glass side and the cylinder flange on the motor side. There is a vacuum port at each end of the cylinder of the evaporator. There is a certain distance between the vacuum port and the cylinder flange for easy assembly. The countercurrent vacuum port is close to the cylinder flange on the motor side, and the downstream vacuum port is close to the cylinder flange on the sight glass side. The cylinder flange on the motor side is provided with a first-section jacket outlet, and the cylinder flange on the sight glass side is provided with a third-section jacket inlet and outlet. The evaporator in the prior art is arranged horizontally, which increases the evaporation area and increases the evaporation speed compared to the evaporation form of the concentration kettle. However, the following problems still exist: the circulation speed of the heating medium in the jacket is relatively fast, and the heat generated by the heating medium cannot be fully utilized, the heat transfer efficiency is relatively low, and a relatively large amount of heating medium enters. Utility Model Content

[0004] The utility model aims to provide a heating jacket for an evaporator which can improve the heat transfer efficiency.

[0005] In order to achieve the above-mentioned utility model purpose, the utility model evaporator heating jacket adopts the following technical solutions:

[0006] A heating jacket for an evaporator comprises an evaporator cylinder and a jacket arranged on the periphery of the evaporator cylinder, a heating chamber is formed between the evaporator cylinder and the jacket, a heating medium is introduced into the heating chamber, the jacket is provided with a heating medium inlet and a heating medium outlet, both of which are connected to the heating chamber; the jacket is provided with a partition plate for dividing the heating chamber into a plurality of small chambers, a plurality of partition plates are arranged at intervals along the length direction of the jacket; a plurality of guide plates are arranged in each small chamber, the length direction of the guide plates is consistent with the length direction of the jacket, the guide plates are arranged between the evaporator cylinder and the jacket, one end of the guide plate is connected to the inner wall on one side of the small chamber, a flow spacing is left between the other end of the guide plate and the inner wall on the other side of the small chamber, and an S-shaped flow channel is formed between the flow spacings of the plurality of guide plates.

[0007] Preferably, the outer wall of the jacket is provided with a main inlet pipe connected to the heating medium, the main inlet pipe is located in the middle of the jacket and extends along the length direction of the jacket, and the outer wall of the jacket is provided with a branch inlet pipe at the position of each small chamber, the branch inlet pipe is set in C shape, and the middle of the branch inlet pipe is connected to the main inlet pipe; each small chamber is provided with two heating medium inlets, the heating medium inlets are respectively arranged at the top and bottom of the jacket, one end of the branch inlet pipe is connected to the heating medium inlet at the top of the jacket, and the other end of the branch inlet pipe is connected to the heating medium inlet at the bottom of the jacket. Steam enters each branch inlet pipe through the main inlet pipe, and then enters the small chamber through the heating medium inlet.

[0008] Preferably, the outer wall of the jacket is provided with a branch outlet pipe at the position of each small chamber, each small chamber is provided with a heating medium outlet, the heating medium outlet is arranged in the middle of the jacket, and the heating medium outlet is connected to the main outlet pipe through the branch outlet pipe.

[0009] Preferably, the heating medium outlet is located on one side of the small chamber, and the heating medium inlet is located on the other side of the small chamber.

[0010] Preferably, the heating medium inlet and the flow spacing of adjacent guide plates are staggered, the heating medium inlet is located on one side of the small chamber, and the flow spacing of adjacent guide plates is located on the other side of the small chamber. Steam enters the small chamber from the heating medium inlet, then flows to the flow spacing on the other side of the small chamber, and then flows along the S-shaped flow channel, ensuring that the steam covers the entire small chamber and improving the heat transfer efficiency.

[0011] Preferably, the heating medium outlet and the flow spacing between adjacent guide plates are staggered, the heating medium outlet is located on one side of the small chamber, and the flow spacing between adjacent guide plates is located on the other side of the small chamber.

[0012] Preferably, the heating medium is water vapor.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. The heating chamber of the utility model is divided into a plurality of small chambers by a partition plate, and a plurality of guide plates are arranged in the small chambers. Through the arrangement of the plurality of guide plates, an S-shaped flow channel is formed in the small chamber for facilitating the flow of steam. The steam flows in a circuitous manner along the S-shaped flow channel and is finally discharged from the heating medium outlet. Through the arrangement of the S-shaped flow channel, the flow time of the steam in the small chamber is prolonged, the heat transfer efficiency is improved, the structure is simple, and the utility model is practical.

[0015] 2. The utility model provides a guide plate, which is arranged between the evaporator cylinder and the jacket, thereby improving the structural strength. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 is a schematic diagram of the arrangement of the guide plate;

[0018] Figure 3 for Figure 1 Left view of

[0019] Figure 4 Schematic diagram of the layout of the main outlet pipe and branch outlet pipe.

[0020] Among them, 1 is an evaporator cylinder, 2 is a branch inlet pipe, 3 is a jacket, 4 is a main inlet pipe, 5 is a partition plate, 6 is a branch outlet pipe, 7 is a heating medium inlet, 8 is a heating chamber, 8a is a small chamber, 9 is a heating medium outlet, 10 is a flow spacing, 11 is a main outlet pipe, and 12 is a guide plate. DETAILED DESCRIPTION

[0021] The present invention is further explained below in conjunction with specific implementation methods. It should be understood that these implementation methods are only used to illustrate the present invention and are not used to limit the scope of the present invention. After reading the present invention, various equivalent forms of modifications to the present invention by those skilled in the art all fall within the scope defined by the claims attached to this application.

[0022] like Figure 1-4As shown, a heating jacket for an evaporator comprises an evaporator cylinder 1 and a jacket 3 arranged on the periphery of the evaporator cylinder 1, a heating chamber 8 is formed between the evaporator cylinder 1 and the jacket 3, a heating medium is introduced into the heating chamber 8, the heating medium is water vapor, the jacket 3 is provided with a heating medium inlet 7 and a heating medium outlet 9, both of which are connected to the heating chamber 8; the jacket 3 is provided with a partition plate 5 for dividing the heating chamber 8 into a plurality of small chambers 8a, a plurality of partition plates 5 are arranged at intervals along the length direction of the jacket 3; a plurality of guide plates 12 are provided in each small chamber 8a, The length direction of the guide plate is consistent with the length direction of the jacket. The guide plate 12 is arranged between the evaporator cylinder 1 and the jacket 3. One end of the guide plate 12 is connected to the inner wall of one side of the small chamber 8a. A flow spacing 10 is left between the other end of the guide plate 12 and the inner wall of the other side of the small chamber 8a. An S-shaped flow channel is formed between the flow spacings 10 of multiple guide plates 12. The outer wall of the jacket 3 is provided with a main inlet pipe 4 connected to the heating medium. The main inlet pipe 4 is located in the middle of the jacket 3 and extends along the length direction of the jacket 3. The outer wall of the jacket 3 is provided with a branch inlet pipe at the position of each small chamber 8a. 2, the branch inlet pipe 2 is set to C shape, and the middle part of the branch inlet pipe 2 is connected to the main inlet pipe 4; each small chamber 8a is provided with two heating medium inlets 7, which are respectively arranged at the top and bottom of the jacket 3, one end of the branch inlet pipe 2 is connected to the heating medium inlet 7 at the top of the jacket 3, and the other end of the branch inlet pipe 2 is connected to the heating medium inlet 7 at the bottom of the jacket 3; the outer wall of the jacket 3 is provided with a branch outlet pipe 6 at the position of each small chamber 8a, and each small chamber 8a is provided with a heating medium outlet 9, which is arranged in the middle of the jacket 3, and the heating medium outlet 9 passes through the branch outlet 6. The branch pipe 6 is connected to the main outlet pipe 11; the heating medium outlet 9 is located on one side of the small chamber 8a, and the heating medium inlet 7 is located on the other side of the small chamber 8a; the heating medium inlet 7 is staggered with the flow spacing 10 of the adjacent guide plate 12, the heating medium inlet 7 is located on one side of the small chamber 8a, and the flow spacing 10 of the adjacent guide plate 12 is located on the other side of the small chamber 8a; the heating medium outlet 9 is staggered with the flow spacing 10 of the adjacent guide plate, the heating medium outlet 9 is located on one side of the small chamber 8a, and the flow spacing 10 of the adjacent guide plate 12 is located on the other side of the small chamber 8a.

[0023] The specific working process and principle of the utility model are as follows: the waste liquid enters the interior of the evaporator cylinder 1, and then steam is introduced into the heating chamber 8, thereby heating the evaporator cylinder 1, so that the temperature of the waste liquid inside the evaporator cylinder 1 increases, and the water is evaporated to obtain a concentrated liquid; specifically, the steam enters each branch inlet pipe 2 through the main inlet pipe 4, and then enters the small chamber 8a through the heating medium inlet 7. Under the action of the guide plate 12, an S-shaped flow channel is formed in the small chamber 8a to facilitate the flow of steam. The steam flows in a circuitous manner along the S-shaped flow channel and is finally discharged from the heating medium outlet 9. The setting of the S-shaped flow channel prolongs the flow time of the steam in the small chamber 8a, thereby improving the heat transfer efficiency.

[0024] In the description of the present invention, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inside", "front", "center", "both ends" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0025] In the present utility model, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the utility model according to the specific circumstances.

[0026] The above description shows and describes the preferred embodiments of the utility model. As mentioned above, it should be understood that the utility model is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the utility model concept described herein through the above teachings or the technology or knowledge of the relevant field. The changes and modifications made by those skilled in the art do not depart from the spirit and scope of the utility model, and should be within the scope of protection of the claims attached to the utility model.

Claims

1. A heating jacket for an evaporator, comprising an evaporator cylinder and a jacket arranged on the periphery of the evaporator cylinder, a heating chamber is formed between the evaporator cylinder and the jacket, a heating medium is introduced into the heating chamber, the jacket is provided with a heating medium inlet and a heating medium outlet, and the heating medium inlet and the heating medium outlet are both connected to the heating chamber; characterized in that: The jacket is provided with a partition plate which divides the heating chamber into a plurality of small chambers, and a plurality of partition plates are arranged at intervals along the length direction of the jacket; a plurality of guide plates are arranged in each small chamber, and the length direction of the guide plates is consistent with the length direction of the jacket, and the guide plates are arranged between the evaporator cylinder and the jacket, and one end of the guide plate is connected to the inner wall on one side of the small chamber, and a flow spacing is left between the other end of the guide plate and the inner wall on the other side of the small chamber, and an S-shaped flow channel is formed between the flow spacings of the plurality of guide plates.

2. The heating jacket for evaporator according to claim 1, characterized in that: The outer wall of the jacket is provided with a main inlet pipe connected to the heating medium, the main inlet pipe is located in the middle of the jacket and extends along the length direction of the jacket, and the outer wall of the jacket is provided with a branch inlet pipe at the position of each small chamber, the branch inlet pipe is arranged in a C shape, and the middle part of the branch inlet pipe is connected to the main inlet pipe; each small chamber is provided with two heating medium inlets, and the heating medium inlets are respectively arranged at the top and bottom of the jacket, one end of the branch inlet pipe is connected to the heating medium inlet at the top of the jacket, and the other end of the branch inlet pipe is connected to the heating medium inlet at the bottom of the jacket.

3. The heating jacket for evaporator according to claim 2, characterized in that: The outer wall of the jacket is provided with a branch outlet pipe at the position of each small chamber, and each small chamber is provided with a heating medium outlet. The heating medium outlet is arranged in the middle of the jacket, and the heating medium outlet is connected to the main outlet pipe through the branch outlet pipe.

4. The heating jacket for evaporator according to claim 3, characterized in that: The heating medium outlet is located at one side of the small chamber, and the heating medium inlet is located at the other side of the small chamber.

5. The heating jacket for evaporator according to claim 4, characterized in that: The heating medium inlet and the flow spacing between adjacent guide plates are staggered. The heating medium inlet is located on one side of the small chamber, and the flow spacing between adjacent guide plates is located on the other side of the small chamber.

6. The heating jacket for evaporator according to claim 5, characterized in that: The heating medium outlet is staggered with the flow spacing of adjacent guide plates. The heating medium outlet is located on one side of the small chamber, and the flow spacing of adjacent guide plates is located on the other side of the small chamber.

7. The heating jacket for evaporator according to claim 1, characterized in that: The heating medium is water vapor.

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