CN220270150U - Tail gas heat exchanger capable of recovering waste heat - Google Patents

Abstract

The utility model relates to the technical field of tail gas heat exchangers, in particular to a tail gas heat exchanger capable of recycling waste heat, which comprises a shell, wherein a heat exchange bent pipe is arranged in the shell, two ends of the heat exchange bent pipe are respectively communicated with an air inlet pipe and an air outlet pipe which are sealed and penetrate out of the shell, the shell is communicated with an air outlet pipe and an air inlet pipe, the free end side of the air inlet pipe is provided with a vertical section downwards, the vertical section of the air inlet pipe is fixedly communicated with a tail gas pipe, a filter screen positioned above the position communicated with the tail gas pipe is arranged in the vertical section, an automatic cleaning mechanism is arranged in the air inlet pipe, and a slag collecting mechanism for avoiding tail gas leakage is arranged at the bottom of the vertical section.

Description

Tail gas heat exchanger capable of recovering waste heat

Technical Field

The utility model relates to the technical field of tail gas heat exchangers, in particular to a tail gas heat exchanger capable of recycling waste heat.

Background

Along with the continuous development of society, the industrial field is developing rapidly, in the industrial production process, high-temperature tail gas is often produced, in order to reduce the tail gas temperature, improve the utilization ability to the energy, usually, a heat exchanger is arranged on the exhaust pipe of tail gas, recycle part of heat energy in tail gas, through retrieving, chinese patent publication No. CN218179713U discloses a heat exchanger for waste heat recovery of tail gas, including an outer shell, the inside of the outer shell is provided with a heat exchange elbow, and both ends of the heat exchange elbow are all worn out to the top of the outer shell, the top of the outer shell is provided with a water outlet pipe and a water inlet pipe respectively, one end of the water outlet pipe is fixedly connected with one end of the heat exchange elbow through a flange, the other end of the water inlet pipe is fixedly connected with the other end of the heat exchange elbow through a flange, the inside of the outer shell is fixedly provided with runner plates, the runner plates are provided with a plurality of groups of runner plates, and the runner plates form bending channels, the heat exchange bent pipe is arranged in the bending channel, the cleaning port is arranged in the outer shell along one side of the filter screen, the convenience of cleaning filtered dust impurities is improved, the sealing door is arranged in the cleaning port, the cleaning port can be sealed by the arrangement of the sealing door, the dust impurities are prevented from drifting out, the handle is fixedly arranged on one side of the sealing door, the sealing block is fixedly arranged on the other side of the sealing door, the air baffle is arranged in the cleaning port along one side of the sealing block, the air baffle is fixedly connected with the outer shell through the screw, the stability of downward flow of tail gas is improved, the tail gas flows into the smoke guide pipe of the outer shell through the air inlet pipe when the tail gas is used, flows to the filter screen through the guide of the air guide hopper, and the dust impurities in the tail gas are filtered and blocked through the action of the filter screen, then tail gas flows rightwards through the passageway that forms between different flow path boards, the circulation path of tail gas has been increased, simultaneously carry cold water in to the heat transfer return bend through the inlet tube, cold water flows leftwards along the heat transfer return bend that sets up in the passageway that forms between different flow path boards, the area of contact of heat transfer return bend and tail gas has been increased, make the interior water of heat transfer return bend can fully absorb the tail gas waste heat, then by the discharge of heated water through the outlet pipe, tail gas is discharged through the outlet duct, but along with the filtration to tail gas, the more and more of remaining impurity above the filter screen, along with the impurity is more and more, the rate of passage of tail gas is less and less, and then the discharge of easy influence tail gas, it is when clearing up, then need stop the exhaust emission, open the sealing door and clear up the gas of inside, the in-process of clearance, there is a small amount of tail gas discharge that does not exchange heat, make the tail gas heat exchange rate reduce.

Disclosure of Invention

(one) solving the technical problems

Aiming at the defects of the prior art, the utility model provides the tail gas heat exchanger capable of recycling waste heat, which is convenient for filtering the tail gas before heat exchange and cleaning a filter screen, and simultaneously is convenient for cleaning the filtered impurities under the condition of not influencing the heat exchange of the tail gas.

(II) technical scheme

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a but waste heat recovery's tail gas heat exchanger, includes the casing, the inside of casing is provided with the heat transfer return bend, the both ends of heat transfer return bend communicate respectively and have sealed intake pipe and the outlet duct that runs through out the casing, the intercommunication has outlet pipe and inlet tube on the casing, the free end side of intake pipe is provided with vertical section downwards, fixed intercommunication has the tail gas pipe on the vertical section of intake pipe, be provided with in the vertical section and be located the filter screen with tail gas pipe intercommunication department top, be provided with automatic clearance mechanism in the intake pipe, the bottom of vertical section is provided with the collection sediment mechanism that avoids tail gas leakage.

Preferably, the automatic cleaning mechanism comprises a screw belt arranged below the filter screen, a bracket is fixedly connected to the lower position of the communication part of the tail gas pipe in the air inlet pipe, a rotating shaft fixedly connected with the screw belt is rotatably connected to the top of the bracket, and the screw belt is in contact with the bottom wall of the filter screen and the side wall of the air inlet pipe.

Preferably, the slag collecting mechanism comprises a fixed plate with the bottom end flush with the bottom end of the air inlet pipe, the fixed plate is fixedly connected with the shell through a plurality of connecting rods, a rotating plate which is in sealing rotation fit with the fixed plate is rotationally connected to the fixed plate through a driving motor, a plurality of slag collecting cylinders which are matched with the air inlet pipe are uniformly distributed on the rotating plate, and a cylinder changing port which is matched with the slag collecting cylinders is formed in the fixed plate.

Preferably, a plurality of clamping holes are uniformly distributed on the rotating plate, and convex edges matched with the clamping holes are arranged at the top of the slag collecting cylinder.

Preferably, the support plate for supporting the heat exchange elbow is fixedly connected in the shell, a plurality of support holes matched with the heat exchange elbow are formed in the support plate, one side of each support hole is fixedly connected with a support ring which is in sliding fit with the heat exchange elbow, and a plurality of water passing holes are formed in the support plate.

Preferably, the air inlet pipe and the air outlet pipe are respectively arranged on the left lower side of the shell and the right upper side of the shell, the water outlet pipe and the water inlet pipe are respectively arranged on the left top side and the right bottom side of the shell, and the bottom of the shell is fixedly connected with the bracket.

(III) beneficial effects

Compared with the prior art, the utility model provides the tail gas heat exchanger capable of recovering waste heat, which has the following beneficial effects:

this but waste heat recovery's tail gas heat exchanger filters the filter screen when tail gas passes through setting up automatic clearance mechanism, is convenient for receive the impurity that gets off through automatic clearance mechanism clearance through album sediment mechanism, and simultaneously clear up impurity under the condition of avoiding tail gas leakage, the device is convenient for filter the tail gas before the heat transfer and clear up the filter screen simultaneously, and the impurity that will filter down is cleared up simultaneously in the condition that does not influence tail gas heat transfer.

Drawings

FIG. 1 is a schematic view of the present utility model in partial cross-section throughout its entire structure;

FIG. 2 is a schematic diagram of the overall structure of the present utility model;

FIG. 3 is a schematic view of the structure of the air inlet pipe, the fixing plate and the slag collecting cylinder of the utility model in a partial section through the cooperation and the decomposition.

The reference numerals in the drawings: 1. a housing; 2. a heat exchange elbow; 3. an air inlet pipe; 4. an air outlet pipe; 5. a water outlet pipe; 6. a water inlet pipe; 7. a tail gas pipe; 8. a filter screen; 9. a ribbon; 10. a rotating shaft; 11. a bracket; 12. a fixing plate; 13. a driving motor; 14. a rotating plate; 15. a clamping hole; 16. a slag collecting cylinder; 17. a cylinder changing port; 18. a support plate; 19. a water passing hole; 20. a support ring; 21. a bracket.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Examples:

referring to fig. 1-3, a tail gas heat exchanger capable of recovering waste heat comprises a shell 1, a heat exchange bent pipe 2 is arranged in the shell 1, two ends of the heat exchange bent pipe 2 are respectively communicated with an air inlet pipe 3 and an air outlet pipe 4 which are sealed to penetrate out of the shell 1, an air outlet pipe 5 and an air inlet pipe 6 are communicated with the shell 1, a vertical section is arranged on the free end side of the air inlet pipe 3 downwards, a tail gas pipe 7 is fixedly communicated with the vertical section of the air inlet pipe 3, a filter screen 8 positioned above the position communicated with the tail gas pipe 7 is arranged in the vertical section, an automatic cleaning mechanism is arranged in the air inlet pipe 3, and a slag collecting mechanism for avoiding tail gas leakage is arranged at the bottom of the vertical section.

Specifically, automatic clearance mechanism is including setting up in filter screen 8 below spiral shell area 9, be located in the intake pipe 3 with the below position fixedly connected with support 11 of tail gas pipe 7 intercommunication department, the top rotation of support 11 is connected with the pivot 10 of spiral shell area 9 fixed connection, the spiral shell area 9 contacts with the diapire of filter screen 8 and the lateral wall of intake pipe 3, tail gas passes through tail gas pipe 7 and gets into in the intake pipe 3 and up circulate, drive spiral shell area 9 rotatory when up circulate, scrape the impurity of part adhesion on filter screen 8, be convenient for support pivot 10 through support 11.

Specifically, the slag collecting mechanism comprises a fixed plate 12 with the bottom end flush with the bottom end of the air inlet pipe 3, the fixed plate 12 is fixedly connected with the shell 1 through a plurality of connecting rods, a rotating plate 14 which is in sealing and rotating fit with the fixed plate 12 is rotatably connected to the fixed plate 12 through a driving motor 13, a plurality of slag collecting cylinders 16 which are matched with the air inlet pipe 3 are uniformly distributed and clamped on the rotating plate 14, a cylinder changing port 17 which is matched with the slag collecting cylinders 16 is formed in the fixed plate 12, scraped impurities can directly fall into the slag collecting cylinders 16 communicated with the air inlet pipe 3 under the action of gravity, the driving motor 13 is started to replace the slag collecting cylinders 16 communicated with the air inlet pipe 3, so that scraps for collecting the impurities can be replaced, when the slag collecting cylinders 16 filled with the scraps are moved to the position of the cylinder changing port 17, the slag collecting cylinders 16 can be pushed upwards to clean the slag collecting cylinders, then are put into the rotating plate 14, and the process of collecting the scraps is continued.

Specifically, a plurality of clamping holes 15 are uniformly distributed on the rotating plate 14, convex edges matched with the clamping holes 15 are arranged at the top of the slag collecting cylinder 16, and the slag collecting cylinder 16 is conveniently clamped on the rotating plate 14 through the matching of the clamping holes 15 and the convex edges.

Specifically, the support plate 18 of the heat exchange elbow 2 is fixedly connected with in the shell 1, a plurality of support holes matched with the heat exchange elbow 2 are formed in the support plate 18, a support ring 20 matched with the heat exchange elbow 2 in a sliding manner is fixedly connected to one side of each support hole, a plurality of water passing holes 19 are formed in the support plate 18, the heat exchange elbow 2 is supported conveniently through the support plate 18, the stability of the heat exchange elbow 2 in the shell 1 is improved, the water passing holes 19 are formed, the water in the shell 1 is conveniently circulated, and the support ring 20 is arranged to facilitate the increase of the contact area of the support plate 18 and the heat exchange elbow 2 and the stability of the heat exchange elbow 2 is improved.

Specifically, intake pipe 3 and outlet duct 4 set up respectively in the upper left side of casing 1 and the upper right side of casing 1, and outlet pipe 5 and inlet tube 6 divide to establish in the top left side and the bottom right side of casing 1, and the bottom fixedly connected with bracket 21 of casing 1 makes the heat transfer abundant through the distribution of intake pipe 3, outlet duct 4, outlet pipe 5 and inlet tube 6, improves the utilization ratio of tail gas, through setting up bracket 21, is convenient for increase the stability of casing 1.

When the device is used, tail gas enters the air inlet pipe 3 through the tail gas pipe 7 and flows upwards, the tail gas is filtered through the filter screen 8 and enters the heat exchange bent pipe 2, after heat exchange is carried out between the heat exchange bent pipe 2 and water, the water is discharged through the air outlet pipe 4, the water enters through the water inlet pipe 6, the water after heat exchange is discharged through the water outlet pipe 5, the spiral belt 9 is driven to rotate when the tail gas in the air inlet pipe 3 flows upwards, part of impurities adhered to the filter screen 8 are scraped off, the scraped impurities can directly fall into the slag collecting cylinder 16 communicated with the air inlet pipe 3 under the action of gravity, the driving motor 13 is started to replace the slag collecting cylinder 16 communicated with the air inlet pipe 3, so that scraps of the collected impurities can be replaced, when the slag collecting cylinder 16 filled with the scraps moves to the position of the cylinder exchanging port 17, the slag collecting cylinder 16 can be pushed upwards to clean the scraps, and then the slag collecting cylinder is placed on the rotating plate 14, and the scraps continuously enters the process of collecting the scraps.

It should be noted that references in the specification to "one embodiment," "an example embodiment," "some embodiments," etc., indicate that the embodiment described may include a particular feature, structure, or characteristic, but every embodiment may not necessarily include the particular feature, structure, or characteristic. Moreover, such phrases are not necessarily referring to the same embodiment. Furthermore, when a particular feature, structure, or characteristic is described in connection with an embodiment, it is submitted that it is within the knowledge of one skilled in the art to effect such feature, structure, or characteristic in connection with other embodiments whether or not explicitly described.

It should be readily understood that the terms "on … …", "above … …" and "above … …" in this disclosure should be interpreted in the broadest sense such that "on … …" means not only "directly on something", but also includes "on something" with intermediate features or layers therebetween, and "above … …" or "above … …" includes not only the meaning "on something" or "above" but also the meaning "above something" or "above" without intermediate features or layers therebetween (i.e., directly on something).

Further, spatially relative terms, such as "below," "beneath," "above," "over," and the like, may be used herein for ease of description to describe one element or feature's relationship to another element or feature as illustrated. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. The device may have other orientations (rotated 90 degrees or at other orientations), and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that in this document, relational terms such as "first" and "second" and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims (6)

1. The utility model provides a but waste heat recovery's tail gas heat exchanger which characterized in that: including casing (1), the inside of casing (1) is provided with heat exchange return bend (2), the both ends of heat exchange return bend (2) communicate respectively and have sealed intake pipe (3) and outlet duct (4) that run through out casing (1), the intercommunication has outlet pipe (5) and inlet tube (6) on casing (1), the free end side of intake pipe (3) is provided with vertical section downwards, fixed intercommunication has tail gas pipe (7) on the vertical section of intake pipe (3), be provided with in the vertical section and be located filter screen (8) with tail gas pipe (7) intercommunication department top, be provided with automatic clearance mechanism in intake pipe (3), the bottom of vertical section is provided with the collection sediment mechanism that avoids tail gas leakage.

2. The waste heat recoverable tail gas heat exchanger according to claim 1, wherein: the automatic cleaning mechanism comprises a screw belt (9) arranged below a filter screen (8), a support (11) is fixedly connected to the lower position of the position, which is communicated with a tail gas pipe (7), of the air inlet pipe (3), a rotating shaft (10) fixedly connected with the screw belt (9) is rotatably connected to the top of the support (11), and the screw belt (9) is in contact with the bottom wall of the filter screen (8) and the side wall of the air inlet pipe (3).

3. The waste heat recoverable tail gas heat exchanger according to claim 2, wherein: the slag collecting mechanism comprises a fixed plate (12) with the bottom end flush with the bottom end of the air inlet pipe (3), the fixed plate (12) is fixedly connected with the shell (1) through a plurality of connecting rods, a rotating plate (14) which is in sealing and rotating fit with the fixed plate (12) is rotationally connected on the fixed plate (12) through a driving motor (13), a plurality of slag collecting cylinders (16) which are matched with the air inlet pipe (3) are uniformly distributed on the rotating plate (14), and a cylinder changing port (17) which is matched with the slag collecting cylinders (16) is formed in the fixed plate (12).

4. A waste heat recoverable tail gas heat exchanger according to claim 3, wherein: a plurality of clamping holes (15) are uniformly distributed on the rotating plate (14), and convex edges matched with the clamping holes (15) are arranged at the top of the slag collecting cylinder (16).

5. The heat recovery tail gas heat exchanger of claim 4, wherein: the heat exchange tube support is characterized in that a support plate (18) for supporting the heat exchange tube (2) is fixedly connected in the shell (1), a plurality of support holes matched with the heat exchange tube (2) are formed in the support plate (18), a plurality of support rings (20) which are in sliding fit with the heat exchange tube (2) are fixedly connected to one sides of the support holes, and a plurality of water passing holes (19) are formed in the support plate (18).

6. The heat recovery tail gas heat exchanger of claim 5, wherein: the air inlet pipe (3) and the air outlet pipe (4) are respectively arranged on the left lower side of the shell (1) and the right upper side of the shell (1), the water outlet pipe (5) and the water inlet pipe (6) are respectively arranged on the left top side and the right bottom side of the shell (1), and the bottom of the shell (1) is fixedly connected with a bracket (21).