Concentrate extraction waste heat recovery device

Abstract

The utility model relates to a waste heat recovery device technical field provides a kind of concentrated liquid extraction waste heat recovery device, including outer shell, the both sides of outer shell bottom end are fixed with support plate, one end of outer shell is equipped with first end cover, the other end of outer shell is equipped with second end cover, the inside fixed heat exchange structure of outer shell, the inside fixed cleaning structure of hot gas inlet pipe. The utility model is provided with heat exchange structure, by the spiral plate inside the inner shell guiding hot gas flows along spiral path, avoid hot gas "short flow", make hot gas stay in device time extension, ensure that waste heat is fully absorbed, by the cavity between outer shell and inner shell can accommodate a large amount of cold water, inner shell as heat conducting medium, inside hot gas heat is efficiently transferred to cavity cold water;At the same time, the spiral pipe of inner shell inside is directly embedded hot gas flow path, cold water in pipe and hot gas outside pipe directly exchange heat through pipe wall, improve heat exchange efficiency by double structure.

Description

Technical Field

[0001] This utility model relates to the technical field of waste heat recovery devices, and in particular to a waste heat recovery device for extracting concentrated liquid. Background Technology

[0002] In the field of concentrate extraction, the moisture in the raw materials is usually removed by heating and evaporation to obtain a high concentration of the target product. However, the heating system will generate a large amount of high-temperature exhaust gas carrying waste heat. If this part of the heat gas is directly released into the environment, it will not only cause serious energy waste, but also cause the ambient temperature to rise. A waste heat recovery device for concentrate extraction uses professional heat exchange and energy conversion technology to efficiently recover this waste heat and realize the role of energy recycling.

[0003] Traditional waste heat recovery devices for concentrate extraction mostly use straight-tube heat exchangers. The hot gas flows in a straight line within the device, resulting in short contact time with the heat exchanger tubes. Without an airflow guiding structure, some hot gas bypasses the heat exchanger tube area, flows rapidly along the inner wall of the device, and is directly discharged, thus reducing the heat utilization rate. Utility Model Content

[0004] The purpose of this invention is to provide a waste heat recovery device for concentrate extraction, which solves the problem of low heat utilization rate in existing waste heat recovery devices for concentrate extraction.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a waste heat recovery device for concentrated liquid extraction, comprising an outer shell;

[0006] Support plates are fixed to both sides of the bottom end of the outer shell. A first end cap is installed at one end of the outer shell, and a second end cap is installed at the other end of the outer shell. A heat exchange structure is fixed inside the outer shell. The heat exchange structure includes a hot air inlet pipe fixed to one end of the first end cap, and hot air outlet pipes are fixed to both sides of one end of the second end cap. An inner shell is fixed inside the outer shell, and a cavity is provided between the inner shell and the outer shell. A support rod is fixed inside the inner shell, and a spiral plate is fixed to the outside of the support rod. A water inlet pipe is fixed to the top side of the outer shell, and a connecting pipe is fixed to the top side of the inner shell. A spiral tube is provided to the outside of the spiral plate inside the inner shell. A water outlet pipe is fixed to the bottom side of the inner shell, and a drain pipe is fixed to the bottom side of the outer shell.

[0007] The interior of the hot gas inlet pipe is equipped with a cleaning structure.

[0008] Preferably, the support plates are symmetrically distributed at the bottom of the outer shell, and the first end cap and the second end cap are threadedly connected to both ends of the outer shell, and sealing rings are installed at both ends of the first end cap and the second end cap inside the outer shell.

[0009] Preferably, the hot air exhaust pipes are symmetrically distributed on both sides of one end of the second end cap, the inner shell and the outer shell are integrally formed, one end of the support rod is fixedly connected to one end of the second end cap, the outer side of the spiral plate abuts against the inside of the inner shell, and the bottom end of the water inlet pipe extends through the top side of the outer shell into the cavity.

[0010] With the above structure, during use, the outer side of the spiral plate abuts against the inside of the inner shell, so that there is no gap between the spiral plate and the inner shell. After the hot air enters the inner shell, it can only flow slowly along the spiral channel formed by the spiral plate, thereby prolonging the residence time of the hot air and improving the waste heat absorption efficiency.

[0011] Preferably, the interior of the connecting pipe is connected to the interior of the cavity, one end of the connecting pipe is fixedly connected to one end of the spiral pipe, the other end of the spiral pipe is fixedly connected to one end of the water outlet pipe, one end of the water outlet pipe extends through the bottom side of the outer shell to the outside of the outer shell, and a valve is installed on the outside of the drain pipe.

[0012] With the above structure, the spiral tube is directly embedded in the hot air flow path of the inner shell during use. The cold water inside the tube and the hot air outside the tube exchange heat through direct contact with the tube wall, which makes the heat transfer efficiency of direct heat exchange higher and allows the cold water inside the tube to be heated quickly to close to the initial temperature of the hot air.

[0013] Preferably, the cleaning structure includes a bracket fixed to one side of the hot air inlet pipe, a rotating shaft installed inside the support rod, a motor fixed to one end of the rotating shaft on one side of the second end cover, a filter screen fixed inside the hot air inlet pipe, a rotating block installed at one end of the filter screen, a brush plate fixed to one side of the rotating block, a drain port provided at the bottom of the hot air inlet pipe, a drain pipe fixed at the bottom end of the hot air inlet pipe below the drain port, and a drain valve installed on the outside of the drain pipe.

[0014] Preferably, the other end of the support rod is fixedly connected to one end of the bracket, the support rod has a rotating groove inside, the rotating shaft is rotatably connected inside the support rod, one end of the rotating shaft passes through the inside of the filter screen and is fixedly connected to one end of the rotating block, and one side of the brush plate abuts against one side of the filter screen.

[0015] With the above structure, during use, the brush plate side comes into close contact with the filter screen side, allowing the bristles on the brush plate to penetrate deep into the mesh gaps of the filter screen, scraping and removing impurities such as dust and solid particles attached to the mesh and the screen surface, thus maintaining the filtration effect of the filter screen.

[0016] The present invention provides a waste heat recovery device for concentrate extraction, the advantages of which are:

[0017] By incorporating a heat exchange structure, the spiral plates inside the inner shell guide the hot air to flow along a spiral path, preventing hot air "short-circuiting" and extending the residence time of the hot air within the device to ensure that residual heat is fully absorbed. The cavity between the outer and inner shells can hold a large amount of cold water, with the inner shell acting as a heat transfer medium to efficiently transfer heat from the internal hot air to the cold water in the cavity. Simultaneously, the spiral tubes inside the inner shell are directly embedded in the hot air flow path, allowing the cold water inside the tubes to exchange heat directly with the hot air outside the tubes through the tube walls. This dual structure enhances heat exchange efficiency.

[0018] With a cleaning structure, the filter screen inside the pipe can intercept solid particles, dust and other impurities in the hot air in advance, preventing impurities from adhering to the surface of the spiral plate or spiral tube and forming a dirt layer. By starting the motor to drive the rotating shaft to rotate the brush plate, the brush plate makes close contact with the surface of the filter screen, which can quickly peel off the attached impurities. The impurities are discharged in a direction through the drain port and the drain pipe with valve, realizing the function of automatic cleaning. Attached Figure Description

[0019] Figure 1 This is a three-dimensional schematic diagram of the present invention;

[0020] Figure 2 This is a three-dimensional cross-sectional schematic diagram of the present invention;

[0021] Figure 3 This is a three-dimensional exploded view of the present invention;

[0022] Figure 4 This is a three-dimensional schematic diagram of the heat exchange structure of this utility model;

[0023] Figure 5 This is a three-dimensional schematic diagram of the cleaning structure of this utility model.

[0024] The following are the annotations in the diagram: 1. Outer shell; 2. Support plate; 3. First end cover; 4. Second end cover; 5. Heat exchange structure; 501. Hot air inlet pipe; 502. Hot air outlet pipe; 503. Inner shell; 504. Cavity; 505. Support rod; 506. Spiral plate; 507. Water inlet pipe; 508. Connecting pipe; 509. Spiral tube; 510. Water outlet pipe; 511. Drain pipe; 6. Cleaning structure; 601. Bracket; 602. Rotating shaft; 603. Motor; 604. Filter screen; 605. Rotating block; 606. Brush plate; 607. Drain outlet; 608. Drain pipe; 609. Drain valve. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figures 1-5 The present invention provides a waste heat recovery device for extracting concentrated liquid, comprising an outer shell 1.

[0027] Reference Figures 1-4 As shown, support plates 2 are fixed on both sides of the bottom end of the outer shell 1. A first end cap 3 is installed at one end of the outer shell 1, and a second end cap 4 is installed at the other end of the outer shell 1. The support plates 2 are symmetrically distributed at the bottom end of the outer shell 1. The first end cap 3 and the second end cap 4 are threaded to both ends of the outer shell 1, respectively. Sealing rings are installed at both ends of the first end cap 3 and the second end cap 4 inside the outer shell 1. A heat exchange structure 5 is fixed inside the outer shell 1. The heat exchange structure 5 includes a hot air inlet pipe 501 fixed to one end of the first end cap 3, and hot air outlet pipes 502 fixed on both sides of one end of the second end cap 4. An inner shell 503 is fixed inside the outer shell 1. A cavity 504 is provided between the inner shell 503 and the outer shell 1. A support rod 505 is fixed inside the inner shell 503. A spiral plate 506 is fixed to the outside of the support rod 505. A water inlet pipe 507 is fixed to the top side of the outer shell 1, and a connecting pipe is fixed to the top side of the inner shell 503. The inner shell 503 has a spiral tube 509 on the outside of the spiral plate 506 inside the inner shell 503. The bottom side of the inner shell 503 is fixed with a water outlet pipe 510. The bottom side of the outer shell 1 is fixed with a drain pipe 511. The hot air exhaust pipe 502 is symmetrically distributed on both sides of one end of the second end cover 4. The inner shell 503 and the outer shell 1 are integrally formed. One end of the support rod 505 is fixedly connected to one end of the second end cover 4. The outside of the spiral plate 506 abuts against the inside of the inner shell 503. The bottom end of the water inlet pipe 507 extends through the top side of the outer shell 1 to the inside of the cavity 504. The inside of the connecting pipe 508 is connected to the inside of the cavity 504. One end of the connecting pipe 508 is fixedly connected to one end of the spiral tube 509. The other end of the spiral tube 509 is fixedly connected to one end of the water outlet pipe 510. One end of the water outlet pipe 510 extends through the bottom side of the outer shell 1 to the outside of the outer shell 1. A valve is installed on the outside of the drain pipe 511.

[0028] Hot air enters the device through the hot air inlet pipe 501. After entering the inner shell 503, guided by the spiral plate 506, the hot air flows slowly along the spiral path, extending its residence time in the device and avoiding waste of heat caused by short-circuiting. Cold water is injected into the cavity 504 through the water inlet pipe 507 on the top side of the outer shell 1. At the same time, some cold water enters the spiral tube 509 inside the inner shell 503 through the connecting pipe 508, forming a dual heat absorption structure of cavity cold water and spiral tube cold water. This increases the contact area with the hot air, allowing the inner shell 503 to act as a heat conduction medium, transferring the heat of the hot air inside to the cavity 504. Cold water; on the other hand, the spiral tube 509 is directly in the hot air flow path, and the cold water inside the tube and the hot air outside the tube exchange heat directly through the tube wall; thus, the cold water quickly absorbs the waste heat in the hot air, and its temperature rises significantly, while the temperature of the hot air that has released heat decreases and is discharged through the hot air discharge pipes 502 symmetrically distributed on both sides of the second end cover 4; part of the hot water that has been heated after absorbing waste heat is discharged from the water outlet pipe 510 connected to the end of the spiral tube 509, which can be used for subsequent production processes to realize waste heat recovery and utilization; if there is residual water in the cavity 504, it can be discharged through the drain pipe 511 with a valve to avoid water accumulation affecting the heat exchange efficiency.

[0029] Reference Figure 2 , Figure 3 and Figure 5 As shown, a cleaning structure 6 is fixed inside the hot air inlet pipe 501. The cleaning structure 6 includes a bracket 601 fixed to one side of the inside of the hot air inlet pipe 501, a rotating shaft 602 installed inside the support rod 505, a motor 603 fixed to one end of the rotating shaft 602 on one side of the second end cover 4, a filter screen 604 fixed inside the hot air inlet pipe 501, a rotating block 605 installed at one end of the filter screen 604, a brush plate 606 fixed to one side of the rotating block 605, and a drain port provided on the bottom side of the hot air inlet pipe 501. 607, a drain pipe 608 is fixed at the bottom of the hot air inlet pipe 501 below the drain outlet 607. A drain valve 609 is installed on the outside of the drain pipe 608. The other end of the support rod 505 is fixedly connected to one end of the bracket 601. A rotating groove is provided inside the support rod 505. The rotating shaft 602 is rotatably connected inside the support rod 505. One end of the rotating shaft 602 passes through the inside of the filter screen 604 and is fixedly connected to one end of the rotating block 605. One side of the brush plate 606 abuts against one side of the filter screen 604.

[0030] When hot air enters through the hot air inlet pipe 501, it first passes through the filter screen 604 at the inlet of the inner shell 503 to intercept solid impurities in the hot air, preventing impurities from entering the inner shell 503 and adhering to the spiral plate 506 or spiral tube 509, thus affecting the heat exchange effect. When there are too many impurities on the filter screen 604, the motor 603 drives the rotating shaft 602 to rotate in the rotating groove inside the support rod 505. One end of the rotating shaft 602 passes through the filter screen 604 and is fixedly connected to the rotating block 605. The rotating block 605 rotates synchronously with the rotating shaft 602, driving the brush plate 606 on one side to scrape the surface of the filter screen 604, peeling off the attached impurities. The impurities peeled off by the brush plate 606 fall into the drain port 607 on the bottom side of the inner shell 503 under the action of gravity. The drain valve 609 on the outside of the drain pipe 608 is opened to allow the impurities to be discharged from the drain pipe 608. After cleaning is completed, the drain valve 609 is closed to facilitate the continuation of heat exchange.

[0031] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A waste heat recovery device for extracting concentrated liquid, comprising an outer shell (1); Its features are: Support plates (2) are fixed on both sides of the bottom end of the outer shell (1). A first end cap (3) is installed on one end of the outer shell (1), and a second end cap (4) is installed on the other end of the outer shell (1). A heat exchange structure (5) is fixed inside the outer shell (1). The heat exchange structure (5) includes a hot gas inlet pipe (501) fixed to one end of the first end cap (3). Hot gas outlet pipes (502) are fixed on both sides of one end of the second end cap (4). An inner shell (503) is fixed inside the outer shell (1). The inner shell (503) and the outer shell (1) are connected. A cavity (504) is provided between the inner shell (503), a support rod (505) is fixed inside the inner shell (503), a spiral plate (506) is fixed outside the support rod (505), a water inlet pipe (507) is fixed on the top side of the outer shell (1), a connecting pipe (508) is fixed on the top side of the inner shell (503), a spiral tube (509) is provided outside the spiral plate (506) inside the inner shell (503), a water outlet pipe (510) is fixed on the bottom side of the inner shell (503), and a drain pipe (511) is fixed on the bottom side of the outer shell (1). A cleaning structure (6) is fixed inside the hot gas inlet pipe (501).

2. The waste heat recovery device for concentrate extraction according to claim 1, characterized in that: The support plate (2) is symmetrically distributed at the bottom of the outer shell (1). The first end cap (3) and the second end cap (4) are threaded to both ends of the outer shell (1). Both ends of the first end cap (3) and the second end cap (4) are fitted with sealing rings inside the outer shell (1).

3. The waste heat recovery device for concentrate extraction according to claim 1, characterized in that: The hot air exhaust pipe (502) is symmetrically distributed on both sides of one end of the second end cap (4). The inner shell (503) and the outer shell (1) are integrally formed. One end of the support rod (505) is fixedly connected to one end of the second end cap (4). The outer side of the spiral plate (506) abuts against the inside of the inner shell (503). The bottom end of the water inlet pipe (507) extends through the top side of the outer shell (1) to the inside of the cavity (504).

4. The waste heat recovery device for concentrate extraction according to claim 1, characterized in that: The interior of the connecting pipe (508) is connected to the interior of the cavity (504). One end of the connecting pipe (508) is fixedly connected to one end of the spiral pipe (509). The other end of the spiral pipe (509) is fixedly connected to one end of the water outlet pipe (510). One end of the water outlet pipe (510) extends through the bottom side of the outer shell (1) to the outside of the outer shell (1). A valve is installed on the outside of the drain pipe (511).

5. The waste heat recovery device for concentrate extraction according to claim 1, characterized in that: The cleaning structure (6) includes a bracket (601) fixed inside one side of the hot air inlet pipe (501), a rotating shaft (602) installed inside the support rod (505), a motor (603) fixed at one end of the rotating shaft (602) on one side of the second end cover (4), a filter screen (604) fixed inside the hot air inlet pipe (501), a rotating block (605) installed at one end of the filter screen (604), a brush plate (606) fixed on one side of the rotating block (605), a drain port (607) provided at the bottom side of the hot air inlet pipe (501), a drain pipe (608) fixed at the bottom end of the hot air inlet pipe (501) below the drain port (607), and a drain valve (609) installed on the outside of the drain pipe (608).

6. The waste heat recovery device for concentrate extraction according to claim 5, characterized in that: The other end of the support rod (505) is fixedly connected to one end of the bracket (601). The support rod (505) has a rotating groove inside. The rotating shaft (602) is rotatably connected inside the support rod (505). One end of the rotating shaft (602) passes through the inside of the filter screen (604) and is fixedly connected to one end of the rotating block (605). One side of the brush plate (606) abuts against one side of the filter screen (604).

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