Condensate water recovery device for drying tower heater

Abstract

The utility model discloses a condensate water recovery device for a drying tower heater, which belongs to the technical field of condensate water recovery and comprises a steam heater, a fixing pipe and a heat exchange box, the steam heater is used for providing hot air for a drying tower, the fixing pipe is communicated with the steam heater and used for guiding the hot air into the drying tower, and guide pipes are fixedly connected with two side walls of the heat exchange box in an embedded mode. Sealing bearings are fixedly connected to the inner pipe face of the guide pipe in an embedded mode, inner rings of the two sealing bearings are in interference fit with a heat exchange pipe used for condensing and recycling condensate water, a driven bevel gear is welded to the outer pipe face of the heat exchange pipe, the driven bevel gear is meshed with a driving bevel gear, and a transmission rod is welded to the top face of the driving bevel gear. The end face of the transmission rod is detachably connected with an output shaft of a rotating motor through a bolt, two fixing rods are welded to the top wall in the heat exchange box, and the end faces of the fixing rods are fixedly connected with limiting bearings, condensate water condensed on the surface of the heat exchange pipe is fully cleaned, and the heat exchange effect of water and hot steam in the heat exchange pipe is improved.

Description

Technical Field

[0001] This utility model belongs to the field of condensate recovery technology, and in particular to a condensate recovery device for a drying tower heater. Background Technology

[0002] Spray drying involves atomizing a thinner in a drying chamber, where the moisture rapidly vaporizes upon contact with hot air, resulting in a dried product. The heater heats the introduced air, but the heated steam is typically released directly, causing heat loss. Therefore, a heater condensate recovery device is needed to condense and recover the hot steam, reducing energy consumption.

[0003] A search of related technologies revealed a scheme for a condensate recovery device for a milk powder drying tower heater (publication number CN218627815U). This device includes a steam heater, with one end of a transmission pipe two connected to the top of the steam heater. The other end of the transmission pipe two is connected to a condensate recovery assembly. The top of a water supply pipe one is connected to the condensate recovery assembly, the top of a water supply pipe two is connected to the condensate recovery assembly, and the top of a water guide pipe one is connected to the condensate recovery assembly. In this invention, condensate is recovered, and a water storage plate, in conjunction with a spiral channel, preheats the gas while ensuring efficient preheating. The heat and moisture in the steam are recovered and reused. However, this device does not consider using vibration to clean the water droplets condensed on the surface of the heat exchange tubes, resulting in a weak cleaning effect and insufficient removal of the water droplets condensed on the surface of the heat exchange tubes, thus reducing the heat exchange efficiency between the water and hot steam inside the heat exchange tubes. Utility Model Content

[0004] The purpose of this invention is to provide a condensate recovery device for a drying tower heater to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a condensate recovery device for a drying tower heater, comprising a steam heater for supplying hot air to the drying tower, a fixed pipe connected to the steam heater for introducing hot air into the drying tower, and a heat exchange box. Conduits are embedded and fixedly connected to both side walls of the heat exchange box. Sealed bearings are embedded and fixedly connected to the inner surfaces of the conduits. A heat exchange tube for condensate recovery is interference-fitted between the inner rings of the two sealed bearings. A driven bevel gear is welded to the outer surface of the heat exchange tube, meshing with a driving bevel gear. A transmission rod is welded to the top surface of the driving bevel gear. The output shaft of a rotary motor is detachably connected to the end face of the transmission rod via bolts. Two fixed rods are welded to the top wall of the heat exchange box. Limit bearings are fixedly connected to the end faces of the fixed rods, and the inner rings of the two limit bearings are interference-fitted with the heat exchange tubes.

[0006] Preferably, the fixed end of the rotary motor is installed on the top surface of the heat exchange box, and the top surface of the steam heater is connected to a gas guide pipe for discharging hot steam, with the outer periphery of the gas guide pipe connected to the heat exchange box.

[0007] Preferably, one of the conduits is connected to the output end of a water pump on its outer periphery, the input end of the water pump is connected to a preheating box, and the other conduit is connected to the preheating box on its outer periphery.

[0008] Preferably, the top surface of the preheating box is connected to an air inlet pipe and a connecting pipe, the outer periphery of the connecting pipe is connected to a steam heater, and several scrapers are slidably connected to the bottom wall of the preheating box.

[0009] Preferably, several scraper blades are embedded and fixedly connected to connecting rods on their sides, and sealing rings are sleeved on the sides of the connecting rods, with the sides of the sealing rings being embedded and fixedly connected to the preheating box.

[0010] Preferably, a movable frame is welded to the end face of the connecting rod, a movable rod is movably connected to the inner side wall of the movable frame, and a rotating plate is welded to the top surface of the movable rod.

[0011] Preferably, a rotating rod is welded to the top surface of the rotating plate, and a drive motor is detachably connected to the end face of the rotating rod by bolts. A mounting plate is detachably connected to the fixed end of the drive motor by bolts.

[0012] Preferably, the side of the mounting plate is welded to the preheating box, and a drain pipe is connected to the bottom of the heat exchange box, with the outer periphery of the drain pipe connected to the preheating box.

[0013] Compared with the prior art, the technical effects and advantages of this utility model are as follows:

[0014] This drying tower heater condensate recovery device heats the incoming air using a steam heater, which is then introduced into the drying tower through a fixed pipe. The used steam is then guided into the heat exchanger through a duct, where it heats the water inside the heat exchanger tubes. Simultaneously, a rotary motor provides power, driving a transmission rod to rotate. The meshing of the driving and driven bevel gears rotates the heat exchanger tubes, causing water droplets condensed on the outer wall of the tubes to detach under centrifugal force, thus recovering the condensate and improving the heating effect of the steam on the water inside the tubes. A sealed bearing facilitates relative rotation between the heat exchanger tubes and the guide tubes, while two fixed rods and a limit bearing provide stability to the heat exchanger tubes, enhancing the structural stability of the device components.

[0015] The condensate recovery device for the drying tower heater draws water from the preheating chamber through the input of a water pump, allowing the water to flow into the heat exchange tubes in the heat exchange box for heating, and then flows back to the preheating chamber. Air is introduced into the preheating chamber through the air inlet pipe to preheat the air. The preheated air is then introduced into the steam heater for further heating through the connecting pipe. The drive motor provides power, and the rotating rods and movable rods welded to the top and bottom of the rotating plate are staggered. Under the connection provided by the connecting rod, several scrapers move laterally and reciprocally during the transmission process, which agitates the water in the preheating chamber, making the water temperature uniform and improving the preheating effect of the air. Attached Figure Description

[0016] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a left sectional view of the heat exchanger box of this utility model;

[0019] Figure 3 For the present utility model Figure 2 Enlarged view of the structure at point A in the middle;

[0020] Figure 4 This is a partial structural schematic diagram of the preheating box of this utility model;

[0021] Figure 5 This is a schematic diagram of the scraper and connecting rod of this utility model;

[0022] Figure 6 This is a structural schematic diagram of the movable frame and mounting plate of this utility model.

[0023] Explanation of reference numerals in the attached figures:

[0024] In the diagram: 1. Steam heater; 2. Heat exchange box; 3. Conduit; 4. Sealed bearing; 5. Heat exchange tube; 6. Transmission rod; 7. Rotary motor; 8. Limit bearing; 9. Fixing rod; 10. Drain pipe; 11. Air guide pipe; 12. Preheating box; 13. Air inlet pipe; 14. Water pump; 15. Connecting pipe; 16. Scraper; 17. Connecting rod; 18. Sealing ring; 19. Movable frame; 20. Movable rod; 21. Rotating plate; 22. Rotating rod; 23. Drive motor; 24. Mounting plate; 25. Fixing pipe. Detailed Implementation

[0025] In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. However, it will be apparent to those skilled in the art that the present invention can be practiced without one or more of these details. In other instances, certain technical features well-known in the art have not been described in order to avoid confusion with the present invention.

[0026] Unless otherwise defined, the directions mentioned herein, such as up, down, left, right, front, back, inside, and outside, are based on the directions shown in the figures of this utility model, and are explained here together.

[0027] The connection method can be any existing method, such as bonding, welding, or bolting, depending on the actual needs.

[0028] To address the issue of insufficient cleaning of water droplets condensed on the surface of heat exchange tubes during operation of the drying tower heater condensate recovery device, thus reducing the heat exchange efficiency between water and hot steam within the tubes, please refer to [link to relevant documentation]. Figures 1 to 6 The main body of the device consists of a steam heater 1 for supplying hot air to the drying tower, a fixed pipe 25 connected to the steam heater 1 for introducing hot air into the drying tower, and a heat exchange box 2. The top surface of the steam heater 1 is connected to a guide pipe 11 for discharging hot steam. The outer periphery of the guide pipe 11 is connected to the heat exchange box 2. The hot steam used by the steam heater 1 is introduced into the heat exchange box 2 through the guide pipe 11. The two side walls of the heat exchange box 2 are embedded with and fixedly connected to the conduits 3 to fix the position of the two conduits 3.

[0029] A sealed bearing 4 is embedded and fixedly connected inside the inner tube surface of the conduit 3. The inner rings of the two sealed bearings 4 are interference-fitted with a heat exchange tube 5 for condensation and recovery of condensate. The sealed bearings 4 provide conditions for the relative rotation of the conduit 3 and the heat exchange tube 5. The water inside the heat exchange tube 5 is heated by introducing hot steam from inside the heat exchange box 2, which facilitates the recovery of condensate condensed on the outer wall of the heat exchange tube 5. A driven bevel gear is welded to the outer tube surface of the heat exchange tube 5, and the driven bevel gear meshes with a driving bevel gear. A transmission rod 6 is welded to the top surface of the driving bevel gear, and the output shaft of the rotary motor 7 is detachably connected to the end face of the transmission rod 6 by bolts.

[0030] During the rotation of the output shaft of the rotary motor 7, the transmission rod 6 is driven to rotate. Under the meshing action of the driving bevel gear and the driven bevel gear, the heat exchange tube 5 is easily rotated. This allows the condensate on the outer wall of the heat exchange tube 5 to be removed from the heat exchange tube 5 under the action of centrifugal force, thus achieving thorough cleaning of the condensate adhering to the surface of the heat exchange tube 5. This prevents the adhesion of condensate from reducing the heating effect on the water inside the heat exchange tube 5 and improves the recovery of condensate. Two fixing rods 9 are welded to the top wall of the heat exchange box 2. The end face of the fixing rods 9 is fixedly connected to the limit bearings 8. The inner rings of the two limit bearings 8 are interference-fitted with the heat exchange tube 5. The two fixing rods 9 and the limit bearings 8 provide support and fixation for the heat exchange tube 5, improving the structural stability of the device components.

[0031] The fixed end of the rotary motor 7 is installed on the top surface of the heat exchange box 2. The fixed end of the rotary motor 7 is detachably connected to the top surface of the heat exchange box 2 by bolts. One of the conduits 3 is connected to the output end of the water pump 14 on its outer periphery. The input end of the water pump 14 is connected to the preheating box 12, and the fixed end of the water pump 14 is detachably connected to the preheating box 12 by bolts. The other conduit 3 is connected to the preheating box 12 on its outer periphery. Water is drawn from the inside of the preheating box 12 through the input end of the water pump 14. During the transmission process, the water flows into the heat exchange tube 5. The heated water flows back into the preheating box 12 through the conduit 3, realizing the heat recovery of the hot steam and reducing the energy consumption of the device. The top surface of the preheating box 12 is connected to the air inlet pipe 13 and the connecting pipe 15 respectively.

[0032] The preheating box 12 is equipped with water-submerged pipes. The two outer sides of the pipes are connected to the air inlet pipe 13 and the connecting pipe 15, respectively. Air is introduced into the pipes inside the preheating box 12 through the air inlet pipe 13, so that the water inside the preheating box 12 provides initial heating to the air. Through the connection of the connecting pipe 15, the air is introduced into the steam heater 1 for further heating. The outer side of the connecting pipe 15 is connected to the steam heater 1. Several scrapers 16 are slidably connected to the bottom wall of the preheating box 12. The scrapers 16 facilitate the stirring of the water inside the preheating box 12, so as to achieve uniform water temperature inside the preheating box 12 and thus improve the preheating effect of the introduced air. Connecting rods 17 are embedded and fixedly connected to the sides of the scrapers 16.

[0033] The connecting rod 17 provides a connection, facilitating the synchronous movement of several scrapers 16. A sealing ring 18 is sleeved on the side of the connecting rod 17, and the side of the sealing ring 18 is embedded and fixedly connected to the preheating box 12. The sealing ring 18 provides a sealing function to prevent water leakage during the movement of the connecting rod 17 along the inner ring surface of the sealing ring 18, thereby improving the structural stability of the device components. A movable frame 19 is welded to the end face of the connecting rod 17. A movable rod 20 is movably connected to the inner wall of the movable frame 19. A rotating plate 21 is welded to the top surface of the movable rod 20, and a rotating rod 22 is welded to the top surface of the rotating plate 21. The rotating rod 22 and the movable rod 20 welded to the top and bottom surfaces of the rotating plate 21 are staggered, which facilitates the relative rotation and movement of the movable rod 20 along the inner wall of the movable frame 19 during the rotation of the rotating rod 22. During the transmission process, the several scrapers 16 are moved laterally back and forth.

[0034] The water inside the preheating box 12 is stirred by several scrapers 16 to achieve uniform water temperature and improve the preheating effect on the introduced air. The end face of the rotating rod 22 is detachably connected to the drive motor 23 by bolts. The fixed end of the drive motor 23 is detachably connected to the mounting plate 24 by bolts. The drive motor 23 provides power so that the output shaft of the drive motor 23 rotates and drives the rotating rod 22 to rotate. The side of the mounting plate 24 is welded to the preheating box 12. The bottom surface of the heat exchange box 2 is connected to the drain pipe 10. The outer periphery of the drain pipe 10 is connected to the preheating box 12. The condensate accumulated on the bottom wall of the heat exchange box 2 flows into the preheating box 12 through the drain pipe 10 to achieve the recovery of condensate.

[0035] The rotary motor 7, water pump 14, and drive motor 23 are all existing technologies. Their working principles, dimensions, and models are irrelevant to the function of this application, so they will not be described in detail. The control method of this utility model is controlled by a controller. The control circuit of the controller can be implemented by a person skilled in the art through simple programming. The power supply is also common knowledge in the art. Furthermore, this utility model is mainly used to protect mechanical devices, so the control method and circuit connection will not be explained in detail.

[0036] Working principle

[0037] In this drying tower heater condensate recovery device, when in use, the user introduces the hot steam used in the steam heater 1 into the heat exchange box 2 through the air guide pipe 11 to heat the water inside the heat exchange tube 5. The user starts the rotary motor 7, and the output shaft of the rotary motor 7 rotates, driving the transmission rod 6 to rotate. Under the meshing action of the driving bevel gear and the driven bevel gear, the heat exchange tube 5 is rotated, causing the water droplets condensed on the outer wall of the heat exchange tube 5 to detach from the heat exchange tube 5 under the action of centrifugal force. The two fixed rods 9 and the limit bearing 8 provide support for the heat exchange tube 5. The sealed bearing 4 enables the relative rotation of the heat exchange tube 5 and the conduit 3, so that the water pump 14 draws water from the preheating box 12 and introduces it into one of the conduits 3, and then introduces the water into the heat exchange tube 5 for heating. Through the connection of the other conduit 3, the heated water flows into the preheating box 12.

[0038] Air is introduced into the pipes inside the preheating box 12 through the air inlet pipe 13 to achieve initial heating of the air. The air is then introduced into the steam heater 1 through the connecting pipe 15 for further heating. The hot air is then introduced into the drying tower through the fixed pipe 25. The drive motor 23 is started, and the output shaft of the drive motor 23 rotates, driving the rotating rod 22 to rotate. At the same time, the rotating rod 22 and the movable rod 20, which are welded to the top and bottom surfaces of the rotating plate 21 respectively, are staggered to facilitate the circumferential movement of the movable rod 20. This allows the movable rod 20 to rotate and move relative to the movable frame 19. Under the connection of the connecting rod 17, several scrapers 16 move laterally and reciprocally during the transmission process, stirring the water inside the preheating box 12 to make the water temperature in the preheating box 12 uniform and improve the preheating effect of the air.

[0039] It should be noted that, in this document, relational terms such as "one" and "two" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, the phrase "comprising an element defined as..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0040] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A drying tower heater condensate water recovery device, comprising a steam heater (1) for providing hot air to a drying tower and a fixed pipe (25) for leading the hot air to the drying tower and a heat exchange box (2) in communication with the steam heater (1), characterized in that: The heat exchange box (2) is fixedly connected with a guide pipe (3) in the inner side wall, the inner surface of the guide pipe (3) is fixedly connected with a sealing bearing (4), the inner ring of the two sealing bearings (4) is interference-fitted with a heat exchange pipe (5) for condensing and recovering condensed water; The outer surface of the heat exchange pipe (5) is welded with a driven bevel gear, the driven bevel gear is engaged with a driving bevel gear, the top surface of the driving bevel gear is welded with a transmission rod (6), the end surface of the transmission rod (6) is detachably connected with the output shaft of a rotary motor (7) through bolts, the inner top wall of the heat exchange box (2) is welded with two fixed rods (9), the end surface of the fixed rod (9) is fixedly connected with a limiting bearing (8), the inner ring of the two limiting bearings (8) is interference-fitted with the heat exchange pipe (5).

2. A dryer heater condensate recovery apparatus according to claim 1, wherein: The fixed end of the rotary motor (7) is mounted on the top surface of the heat exchange box (2), the top surface of the steam heater (1) is communicated with a gas guide pipe (11) for guiding hot steam, the outer peripheral side of the gas guide pipe (11) is communicated with the heat exchange box (2).

3. A dryer heater condensate recovery apparatus according to claim 2, characterised in that: The outer peripheral side of one of the guide pipes (3) is communicated with the output end of a water pump (14), the input end of the water pump (14) is communicated with a preheating box (12), and the outer peripheral side of the other guide pipe (3) is communicated with the preheating box (12).

4. A dryer heater condensate recovery apparatus according to claim 3, wherein: The top surface of the preheating box (12) is respectively communicated with an air inlet pipe (13) and a connecting pipe (15), the outer peripheral side of the connecting pipe (15) is communicated with the steam heater (1), and the inner bottom wall of the preheating box (12) is slidably connected with a plurality of scrapers (16).

5. A dryer heater condensate recovery apparatus according to claim 4, wherein: The side surface of the scraper (16) is fixedly connected with a connecting rod (17), the side surface of the connecting rod (17) is sleeved with a sealing ring (18), and the side surface of the sealing ring (18) is fixedly connected with the preheating box (12).

6. A dryer heater condensate recovery apparatus according to claim 5, wherein: The end surface of the connecting rod (17) is welded with a movable frame (19), the inner side wall of the movable frame (19) is movably connected with a movable rod (20), and the top surface of the movable rod (20) is welded with a rotating plate (21).

7. A dryer tower heater condensate recovery apparatus according to claim 6, characterised in that: The top surface of the rotating plate (21) is welded with a rotating rod (22), the end surface of the rotating rod (22) is detachably connected with a driving motor (23) through bolts, and the fixed end of the driving motor (23) is detachably connected with a mounting plate (24) through bolts.

8. A dryer tower heater condensate recovery apparatus according to claim 7, characterised in that: The side surface of the mounting plate (24) is welded with the preheating box (12), the bottom surface of the heat exchange box (2) is communicated with a drain pipe (10), and the outer peripheral side of the drain pipe (10) is communicated with the preheating box (12).

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