Novel triple-effect heat exchanger descaling device

Abstract

The utility model discloses a novel triple-effect heat exchanger descaling device which comprises a plurality of liquid conveying pipelines arranged in a heat exchange column body, descaling mechanisms are arranged in the multiple liquid conveying pipelines, each descaling mechanism comprises a fixed connecting base arranged at the top end of the corresponding liquid conveying pipeline, and a center fixing shaft is rotationally connected to each fixed connecting base; the center fixing shaft extends into the liquid conveying pipeline, and a spiral scraper is arranged on the outer side wall of the center fixing shaft and abuts against the inner side wall of the liquid conveying pipeline. The spiral scraper is driven to automatically rotate by utilizing the flow speed of efficient waste liquid conveyed into the liquid conveying pipeline, and the spiral scraper continuously and effectively scrapes and removes scales on the pipe wall of the liquid conveying pipeline, so that the efficient heat transfer performance of the heat exchange column is ensured, and the subsequent evaporation efficiency and heat exchange efficiency are improved; and moreover, the condition that the liquid conveying pipeline is scaled and accumulated can be avoided, so that corrosion and damage to the heat exchange column are reduced, and the service life of equipment is prolonged.

Description

Technical Field

[0001] The present application relates to the technical field of heat exchange equipment, and in particular to a descaling device for a three-effect new heat exchanger. Background Art

[0002] Currently, a heat exchanger, also known as a heat exchanger, is an energy-saving device that realizes heat transfer between materials among two or more fluids at different temperatures. Its main working principle is to achieve heat transfer through heat exchange, that is, heat is transferred from a fluid with a higher temperature to a fluid with a lower temperature, so that the fluid temperature reaches the specified index of the process to meet the needs of process conditions.

[0003] In the related art, a heat exchange column is an important component in a heat exchanger. When high-salt wastewater needs to be evaporated, the high-salt waste liquid is transported into the liquid delivery pipeline of the heat exchange column, and then steam is transported into one side at the top of the heat exchange column. The steam diffuses inside the heat exchange column to perform heat transfer treatment on the waste liquid in the liquid delivery pipeline.

[0004] Regarding the above related art, the inventor believes that when high-salt wastewater is evaporated for a long time, it is easy to scale on the inner wall of the liquid delivery pipeline, resulting in the problem of pipe blockage, thereby reducing the evaporation efficiency. Content of the Utility Model

[0005] The purpose of the present application is to provide a descaling device for a three-effect new heat exchanger to solve the problem that when high-salt wastewater is evaporated for a long time, it is easy to scale on the inner wall of the liquid delivery pipeline, resulting in the problem of pipe blockage, thereby reducing the evaporation efficiency.

[0006] A descaling device for a three-effect new heat exchanger provided by the present application adopts the following technical solutions:

[0007] A descaling device for a three-effect new heat exchanger includes a plurality of liquid delivery pipelines arranged inside a heat exchange column body. Descaling mechanisms are arranged inside each of the plurality of liquid delivery pipelines. The descaling mechanism includes a fixed connection base arranged on the top end of the liquid delivery pipeline. A central fixed shaft is rotatably connected to the fixed connection base. The central fixed shaft extends into the interior of the liquid delivery pipeline, and a spiral scraper is arranged on the outer side wall of the central fixed shaft. The spiral scraper abuts against the inner side wall of the liquid delivery pipeline to remove the scale adhering to the inner side wall of the liquid delivery pipeline.

[0008] Further, the fixed connection base includes a fixing ring arranged on the liquid delivery pipeline. A connecting cross is arranged inside the fixing ring. The top end of the central fixed shaft is rotatably arranged in the middle of the connecting cross through a connecting component. A fixing component is also arranged between the fixing ring and the liquid delivery pipeline.

[0009] Further, the fixing component includes first fixing blocks symmetrically arranged on the outer side of the fixing ring, second fixing blocks symmetrically arranged on the outer side of the top end of the infusion pipeline, fixing pin holes are formed in both the first fixing blocks and the second fixing blocks, and a fixing pin is arranged between the corresponding two fixing pin holes.

[0010] Further, the connecting component includes a movable rod movably arranged in the middle of the connecting cross, a connecting hole matching with the movable rod is formed in the middle of the connecting cross, a connecting socket is arranged at the bottom end of the movable rod, the top end of the central fixed shaft is rotatably arranged inside the connecting socket through a bearing, a connecting pin hole is formed in the side wall of the top end of the movable rod, a connecting pin is arranged in the connecting pin hole, and the connecting pin abuts against the top of the connecting cross.

[0011] Further, a limiting ring groove matching with the top end of the infusion pipeline is formed at the bottom of the fixing ring.

[0012] Further, a waste liquid inlet is arranged at the top of the heat exchange column body, and a waste liquid outlet is arranged at the bottom of the heat exchange column body.

[0013] Further, a steam inlet is arranged at one side of the top of the heat exchange column body, and a steam condensate outlet is arranged at one side of the bottom of the heat exchange column body.

[0014] Further, both the central fixed shaft and the spiral scraper are made of TA4 material.

[0015] Compared with the prior art, the beneficial effects of the present application are as follows: through the structure of the fixed connection base, the central fixed shaft and the spiral scraper cooperating with each other, the spiral scraper is driven to rotate automatically by the flow rate of the high-efficiency waste liquid conveyed into the infusion pipeline, and the spiral scraper continuously and effectively scrapes and removes the scale on the wall of the infusion pipeline, thereby not only ensuring the high-efficiency heat transfer performance of the heat exchange column to improve the subsequent evaporation efficiency and heat exchange efficiency, but also avoiding the situation of scale accumulation in the infusion pipeline, thereby reducing the corrosion and damage to the heat exchange column, and further extending the service life of the equipment.

[0016] At the same time, the descaling device of the present application is relatively convenient to maintain. Compared with the traditional scale cleaning method, this automatic scale removal device can reduce the workload of manual maintenance and cleaning, and reduce the maintenance cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of the descaling device of the three-effect new heat exchanger in the embodiment of the present application.

[0018] Figure 2 is a schematic structural diagram of the central fixing and the spiral scraper in the embodiment of the present application.

[0019] Figure 3 It is a schematic structural diagram of the connection component and the fixing component in the embodiment of the present application.

[0020] Explanation of reference numerals: 1. Heat exchange column body; 11. Waste liquid inlet; 12. Waste liquid outlet; 13. Steam inlet; 14. Steam condensate outlet; 2. Infusion pipeline; 21. Second fixing block; 3. Fixing ring; 31. Limit ring groove; 32. First fixing block; 4. Connecting cross; 41. Movable rod; 42. Connecting socket; 43. Connecting pin; 5. Central fixing shaft; 6. Spiral scraper; 7. Fixing pin. Detailed implementation manners

[0021] The following further elaborates on the present application in conjunction with the attached Figures 1 - 3 drawings.

[0022] The embodiment of the present application discloses a descaling device for a triple-effect new heat exchanger. Referring to Figure 1 , in this embodiment, the descaling device includes an infusion pipeline 2 and a descaling mechanism. Among them, multiple infusion pipelines 2 are provided, and the multiple infusion pipelines 2 are installed inside the heat exchange column body 1. A waste liquid inlet 11 is installed at the top of the heat exchange column body 1, and a waste liquid outlet 12 is installed at the bottom of the heat exchange column body 1; and a steam inlet 13 is installed on one side of the top of the heat exchange column body 1, and a steam condensate outlet 14 is installed on one side of the bottom of the heat exchange column body 1.

[0023] When high-salt wastewater needs to be evaporated, the high-salt wastewater is transported through the waste liquid inlet 11 to these infusion pipelines 2 inside the heat exchange column body 1. At the same time, high-temperature steam is also transported from the steam inlet 13 to the inside of the heat exchange column body 1. The high-temperature steam conducts heat transfer treatment on the high-salt wastewater inside these infusion pipelines 2. The wastewater after heat transfer treatment is discharged out of the heat exchange column body 1 along the waste liquid outlet 12, while the steam and condensate are discharged out of the heat exchange column body 1 along the steam condensate outlet 14 to complete the process of high-salt wastewater evaporation treatment.

[0024] In addition, multiple descaling mechanisms are provided, and the multiple descaling mechanisms are respectively installed inside these infusion pipelines 2; specifically, referring to Figure 1 and Figure 2 , in this embodiment, the descaling mechanism includes a fixed connection base, a central fixing shaft 5, and a spiral scraper 6. Among them, the fixed connection base is installed on the top end of the infusion pipeline 2; one end of the central fixing shaft 5 is rotatably connected to the fixed connection base, and the end of the central fixing shaft 5 away from the fixed connection base extends into the inside of the infusion pipeline 2; the spiral scraper 6 is installed on the outer side wall of the central fixing shaft 5, and the scraping side of the spiral scraper 6 abuts against the inner side wall of the infusion pipeline 2 to facilitate scraping and removing the scale adhering to the inner side wall of the infusion pipeline 2.

[0025] By utilizing the flow rate of the highly efficient waste liquid conveyed into the infusion pipeline 2 to drive the spiral scraper 6 to rotate automatically, the spiral scraper 6 continuously and effectively scrapes and removes the scale on the inner wall of the infusion pipeline 2, thereby not only ensuring the high heat transfer performance of the heat exchange column to improve the subsequent evaporation efficiency and heat exchange efficiency, but also avoiding the situation of scale accumulation in the infusion pipeline 2, thus reducing the corrosion and damage to the heat exchange column and further extending the service life of the equipment.

[0026] Meanwhile, the descaling device of the present application is relatively convenient to maintain. Compared with the traditional scale cleaning method, this device for automatically removing scale can reduce the workload of manual maintenance and cleaning, and lower the maintenance cost.

[0027] In addition, more specifically, referring to Figure 2 and Figure 3 , in this embodiment, the fixed connection base includes a fixed ring 3, a connecting cross 4, a connecting component, and a fixing component. Among them, the fixed ring 3 is arranged on the top of the infusion pipeline 2, and a limiting ring groove 31 is opened at the bottom of the fixed ring 3. The limiting ring groove 31 cooperates with the top end of the infusion pipeline 2 to achieve the effect of firmly limiting the fixed ring 3, so that the fixed ring 3 is firmly installed on the top end of the infusion pipeline 2.

[0028] Meanwhile, the connecting cross 4 is fixedly installed inside the fixed ring 3, and the top end of the central fixed shaft 5 is rotationally installed in the middle of the connecting cross 4 through the connecting component. The connecting cross 4 not only provides an installation position for the central fixed shaft 5, but also the space between the connecting cross 4 and the fixed ring 3 is convenient for the waste liquid to flow into the infusion pipeline 2.

[0029] Preferably, both the central fixed shaft 5 and the spiral scraper 6 are made of TA4 material. The TA4 is an α-type titanium alloy with excellent high-temperature strength, corrosion resistance, and high stability, which can extend the service life of the central fixed shaft 5 and the spiral scraper 6.

[0030] Specifically, referring to Figure 3 , in this embodiment, the connecting component includes a movable rod 41, a connecting socket 42, and a connecting pin 43. Among them, the movable rod 41 is movably installed in the middle of the connecting cross 4, and a connecting hole is opened in the middle of the connecting cross 4. The connecting hole cooperates with the movable rod 41, so that the movable rod 41 passes through the connecting cross 4 along the connecting hole; the connecting socket 42 is fixedly connected to the bottom end of the movable rod 41, and the connecting socket 42 has a cylindrical structure. The outer diameter of the connecting socket 42 is larger than the inner diameter of the connecting hole, so that the connecting socket 42 is located at the bottom of the connecting cross 4.

[0031] Meanwhile, the top end of the central fixed shaft 5 is rotatably installed inside the connecting sleeve base 42 through a bearing. Through the rotational connection of the bearing, the central fixed shaft 5 can rotate more smoothly below the connecting sleeve base 42. And a connecting pin 43 hole is provided on the top side wall of the movable rod 41 extending out of the connecting hole. The connecting pin 43 is inserted into the connecting pin 43 hole to penetrate the movable rod 41, so that the connecting pin 43 abuts against the top of the connecting cross 4, thereby limiting the movable rod 41, facilitating the clamping of the movable rod 41 in the connecting cross 4, and further facilitating the installation of the central fixed shaft 5 and the spiral scraper 6.

[0032] In addition, referring to Figure 3 , in this embodiment, the fixing component is arranged between the fixing ring 3 and the infusion pipeline 2 to further stably position the fixing ring 3; specifically, the fixing component includes a first fixing block 32, a second fixing block 21, and a fixing pin 7. There are two first fixing blocks 32, and the two first fixing blocks 32 are symmetrically installed on the outer side of the fixing ring 3; there are two second fixing blocks 21, and the two second fixing blocks 21 are symmetrically installed on the outer side of the top end of the infusion pipeline 2.

[0033] Meanwhile, fixing pin holes are provided on both the two first fixing blocks 32 and the two second fixing blocks 21. When the first fixing block 32 and the second fixing block 21 on the same side correspond to each other, the fixing pin hole on the first fixing block 32 communicates with the fixing pin hole on the second fixing block 21; the fixing pin 7 is simultaneously clamped between the corresponding two fixing pin holes, thereby enabling the fixed installation of the first fixing block 32 and the second fixing block 21, and further stably positioning the fixing ring 3 on the top end of the infusion pipeline 2.

[0034] The above are only the embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structural or equivalent process transformation made by using the content of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, shall be similarly included in the patent protection scope of the present invention.

Claims

1. A novel triple-effect heat exchanger descaling device, characterized in that: The invention comprises a plurality of liquid infusion pipes (2) arranged inside a heat exchange column body (1), wherein a descaling mechanism is arranged inside each of the plurality of liquid infusion pipes (2), wherein the descaling mechanism comprises a fixed connection base arranged on the top of the liquid infusion pipe (2), wherein a central fixed shaft (5) is rotatably connected to the fixed connection base, wherein the central fixed shaft (5) extends into the interior of the liquid infusion pipe (2), and a spiral scraper (6) is arranged on the outer wall of the central fixed shaft (5), wherein the spiral scraper (6) abuts against the inner wall of the liquid infusion pipe (2) to remove scale adhering to the inner wall of the liquid infusion pipe (2).

2. A novel triple-effect heat exchanger descaling device according to claim 1, characterized in that: The fixed connection base comprises a fixed ring (3) arranged on the infusion pipeline (2), a connecting cross (4) is arranged on the inner side of the fixed ring (3), the top end of the central fixed shaft (5) is rotatably arranged on the middle part of the connecting cross (4) through a connecting component, and a fixing component is also arranged between the fixed ring (3) and the infusion pipeline (2).

3. A novel triple-effect heat exchanger descaling device according to claim 2, characterized in that: The fixing assembly comprises a first fixing block (32) symmetrically arranged on the outside of the fixing ring (3), a second fixing block (21) symmetrically arranged on the outside of the top end of the infusion pipe (2), the first fixing block (32) and the second fixing block (21) both having fixing pin holes, and a fixing pin (7) being arranged between the two corresponding fixing pin holes.

4. A novel triple-effect heat exchanger descaling device according to claim 2, characterized in that: The connecting assembly comprises a movable rod (41) movably arranged in the middle of the connecting cross (4); a connecting hole matching the movable rod (41) is provided in the middle of the connecting cross (4); a connecting sleeve (42) is provided at the bottom end of the movable rod (41); the top end of the central fixed shaft (5) is rotatably arranged inside the connecting sleeve (42) through a bearing; a connecting pin (43) hole is provided on the top side wall of the movable rod (41); a connecting pin (43) is provided in the connecting pin (43) hole; and the connecting pin (43) is tightly abutted against the top of the connecting cross (4).

5. A novel triple-effect heat exchanger descaling device according to claim 2, characterized in that: The bottom of the fixing ring (3) is provided with a limiting ring groove (31) which matches with the top end of the infusion pipe (2).

6. A novel triple-effect heat exchanger descaling device according to claim 1, characterized in that: The top of the heat exchange column body (1) is provided with a waste liquid inlet (11), and the bottom of the heat exchange column body (1) is provided with a waste liquid outlet (12).

7. A novel triple-effect heat exchanger descaling device according to claim 1, characterized in that: A steam inlet (13) is provided on one side of the top of the heat exchange column body (1), and a steam condensate outlet (14) is provided on one side of the bottom of the heat exchange column body (1).

8. A novel triple-effect heat exchanger descaling device according to claim 1, characterized in that: The central fixed shaft (5) and the spiral scraper (6) are both made of TA4 material.

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