Wet and hot waste gas recycling equipment for malt drying furnace
By installing an inner plate and high-pressure nozzle in the wet heat waste gas recovery equipment of the malt drying oven, combined with a vibrator and motor drive, the scale on the heat exchange tube bundle is cleaned efficiently, solving the scaling problem and improving the heat exchange efficiency.
Patent Information
- Application Number
- CN202520424103.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-30
- Publication Date
- 2026-03-10
- Estimated Expiration
- 2035-12-30
AI Technical Summary
Impurities in the hot, humid exhaust gas from the malt drying oven adhere to the outer wall of the heat exchanger, forming scale that affects heat exchange efficiency, and existing cleaning methods are inconvenient.
An inner disc is installed outside the heat exchange tube bundle. High-pressure nozzles are installed on the inner disc to spray high-pressure water and work with a vibrator to clean dirt through high-pressure water and vibration. The inner disc is moved by a drive motor to expand the cleaning range.
It effectively removes dirt from the heat exchange tube bundle, improves heat exchange efficiency, prevents scaling, and simplifies the cleaning process.
Smart Images
Figure CN223985620U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of recycling equipment technology, specifically a device for recycling wet and hot exhaust gas from a malt drying oven. Background Technology
[0002] Malt drying ovens are specialized equipment used to dry malt after germination. They play a crucial role in the production of food products such as beer and wort. During the drying process, malt drying ovens generate humid heat exhaust gas, which includes water vapor, organic matter, dust, smoke, sulfur dioxide, nitrogen oxides, and other pollutants.
[0003] The humid waste gas generated during the drying process of malt drying ovens contains a large amount of heat. Through a waste heat recovery system, this heat can be recovered and reused to reduce energy consumption. For example, equipment such as shell-and-tube heat exchangers can be used to transfer the heat in the humid waste gas to fresh air or other process fluids that need to be heated.
[0004] When hot and humid exhaust gas directly contacts the outer wall of the internal heat exchange structure of a shell-and-tube heat exchanger, impurities in the exhaust gas adhere to the outer wall, forming scale and affecting heat exchange efficiency. Since the drain port of common shell-and-tube heat exchangers is small, it is inconvenient to insert tools into the shell-and-tube heat exchanger to clean the scale. Therefore, a hot and humid exhaust gas recovery device for malt drying ovens is proposed. Utility Model Content
[0005] (a) Technical problems to be solved
[0006] To address the shortcomings of existing technologies, this utility model provides a wet heat waste gas recovery device for malt drying ovens, thereby solving the problems mentioned in the background art.
[0007] (II) Technical Solution
[0008] To achieve the above objectives, this utility model provides the following technical solution: a wet heat waste gas recovery device for a malt drying oven, comprising:
[0009] The housing has a water inlet pipe fixedly installed at its left end, a water outlet pipe fixedly installed at its right end, an air inlet pipe installed on the upper left side of the housing, an air outlet pipe installed on the upper right side of the housing, and a waste discharge pipe installed at its lower end.
[0010] A first tube sheet is fixedly disposed on the inside left side of the shell, and a second tube sheet is fixedly disposed on the inside right side of the shell. A heat exchange tube bundle is installed between the first tube sheet and the second tube sheet.
[0011] An inner plate is located inside the shell. The inner plate has a circular hole located outside the heat exchange tube bundle. A high-pressure nozzle distributed in a ring is fixedly installed on one side of the outer side of the circular hole. A connecting pipe is fixedly installed on one side of the outer side of the inner plate, and the high-pressure nozzle is connected to the connecting pipe.
[0012] A reset spring is fixedly installed on the outside of the inner plate near the round hole. A fixing block is fixedly installed on the outside of the reset spring. A vibrator is fixed on one side of the outside of the fixing block. A roller is rotatably installed on one side of the inside of the fixing block.
[0013] Preferably, a slide rod is fixedly provided at the upper end between the first tube sheet and the second tube sheet, and the inner disc is slidably connected to the slide rod, with the slide rod restricting the movement trajectory of the inner disc.
[0014] Preferably, a rack is fixedly provided at the lower end between the first tube sheet and the second tube sheet, and a bottom shell is provided at the lower end of the inner disk outside the rack, and the bottom shell is fixedly connected to the inner disk.
[0015] Preferably, a drive motor is fixedly installed at the upper inner end of the bottom shell, and a drive gear is installed at the output end of the drive motor. The drive gear is meshed with a rack, and the drive motor is used to control the rotation of the drive gear.
[0016] Preferably, a rotating rod is provided inside the bottom shell at the lower end of the rack, and the rotating rod is rotatably connected to the bottom shell. When the bottom shell moves, the rotating rod converts the frictional force into a rotational force, reducing the resistance when the bottom shell moves.
[0017] Preferably, both ends of the heat exchange tube bundle are fixedly connected to the first tube sheet and the second tube sheet.
[0018] (III) Beneficial Effects
[0019] Compared with the prior art, this utility model provides a wet heat waste gas recovery device for malt drying ovens, which has the following beneficial effects:
[0020] This invention features an inner disc installed outside the heat exchange tube bundle inside the casing. A high-pressure nozzle is installed outside the circular hole inside the inner disc. High-pressure water is sprayed from the nozzle to flush and remove scale from the outside of the heat exchange tube bundle. A vibrator transmits the vibration to the rollers and then to the heat exchange tube bundle. The combination of flushing and vibration improves the cleaning effect and makes cleaning more convenient. After cleaning, wastewater is discharged through a waste pipe, thus preventing scale buildup from affecting heat exchange and solving the problems mentioned in the background art. Attached Figure Description
[0021] Figure 1 This is a cross-sectional view of the overall structure of this utility model;
[0022] Figure 2 For the present utility model Figure 1 Enlarged view of a portion of region A in the middle;
[0023] Figure 3 This is a three-dimensional view of the inner disc structure of this utility model;
[0024] Figure 4 For the present utility model Figure 3 Enlarged view of a portion of region B in the middle;
[0025] Figure 5 This is a three-dimensional view of the shell structure of this utility model.
[0026] In the diagram: 1. Shell; 2. Inlet pipe; 3. Outlet pipe; 4. Inlet pipe; 5. Outlet pipe; 6. Waste discharge pipe; 7. First tube sheet; 8. Second tube sheet; 9. Heat exchanger tube bundle; 10. Inner plate; 11. Circular hole; 12. High-pressure nozzle; 13. Return spring; 14. Fixing block; 15. Roller; 16. Vibrator; 17. Slide rod; 18. Rack; 19. Bottom shell; 20. Rotating rod; 21. Drive motor; 22. Drive gear; 23. Connecting pipe. Detailed Implementation
[0027] 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.
[0028] This utility model provides a technical solution: a device for recovering wet and hot exhaust gas from a malt drying oven. Please refer to [link / reference]. Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 ,include:
[0029] The housing 1 has a water inlet pipe 2 fixedly installed at the left end, a water outlet pipe 3 fixedly installed at the right end, an air inlet pipe 4 installed on the upper left side, an air outlet pipe 5 installed on the upper right side, and a waste discharge pipe 6 installed at the lower end.
[0030] The first tube sheet 7 is fixedly installed on the inside left side of the shell 1, and the second tube sheet 8 is fixedly installed on the inside right side of the shell 1. A heat exchange tube bundle 9 is installed between the first tube sheet 7 and the second tube sheet 8.
[0031] The inner plate 10 is located inside the shell 1. The inner plate 10 is located outside the heat exchange tube bundle 9 and has a circular hole 11. A high-pressure nozzle 12 distributed in a ring is fixedly installed on one side of the outer side of the circular hole 11. A connecting pipe 23 is fixedly installed on one side of the outer side of the inner plate 10, and the high-pressure nozzle 12 is connected to the connecting pipe 23.
[0032] The reset spring 13 is fixedly installed on the outside of the inner plate 10 near the round hole 11. A fixing block 14 is fixedly installed on the outside of the reset spring 13. A vibrator 16 is fixed on the outside of the fixing block 14. A roller 15 is rotatably installed on the inside of the fixing block 14.
[0033] Please see Figure 1 , Figure 3 and Figure 4 A slide rod 17 is fixedly installed at the upper end between the first tube plate 7 and the second tube plate 8, and the inner plate 10 is slidably connected to the slide rod 17. The slide rod 17 restricts the movement trajectory of the inner plate 10.
[0034] Please see Figure 1 and Figure 2 A rack 18 is fixedly installed at the lower end between the first tube sheet 7 and the second tube sheet 8. A bottom shell 19 is installed at the lower end of the inner plate 10 outside the rack 18, and the bottom shell 19 is fixedly connected to the inner plate 10.
[0035] Please see Figure 1 and Figure 2 A drive motor 21 is fixedly installed at the upper end of the bottom shell 19. A drive gear 22 is installed at the output end of the drive motor 21, and the drive gear 22 is meshed with the rack 18. The drive motor 21 is used to control the rotation of the drive gear 22.
[0036] Please see Figure 1 and Figure 2 Inside the bottom shell 19, at the lower end of the rack 18, there is a rotating rod 20, which is rotatably connected to the bottom shell 19. When the bottom shell 19 moves, the rotating rod 20 converts the frictional force into a rotational force, reducing the resistance when the bottom shell 19 moves.
[0037] Please see Figure 1 The two ends of the heat exchange tube bundle 9 are fixedly connected to the first tube sheet 7 and the second tube sheet 8.
[0038] This solution involves connecting a high-pressure water source to pipe 23, activating the high-pressure water source and vibrator 16, transmitting the vibration from vibrator 16 to roller 15 via fixed block 14, and then transmitting the vibration to heat exchange tube bundle 9, causing it to vibrate. High-pressure nozzle 12 sprays high-pressure water to clean the heat exchange tube bundle 9. The combination of high-pressure water rinsing and vibration removes dirt. Activating drive motor 21 causes drive gear 22 to rotate. Drive gear 22 meshes with rack 18, converting the rotational motion of drive gear 22 into linear motion of bottom shell 19 and inner plate 10, thereby increasing the cleaning range. The cleaned dirt is discharged through waste pipe 6.
[0039] It should be noted that, in this document, relational terms such as "first" and "second" are used only 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 process, method, article, or apparatus.
[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 device for recovering wet and hot exhaust gas from a malt drying oven, characterized in that, The utility model relates to a heat exchange device, including: The left end of shell (1) is fixedly provided with water inlet pipe (2), the right end of shell (1) is fixedly provided with water outlet pipe (3), the left side of the upper end of shell (1) is provided with air inlet pipe (4), the right side of the upper end of shell (1) is provided with air outlet pipe (5), and the lower end of shell (1) is provided with waste pipe (6); The left side of the inside of shell (1) is fixedly provided with first tube plate (7), the right side of the inside of shell (1) is fixedly provided with second tube plate (8), and heat exchange tube bundle (9) is installed between first tube plate (7) and second tube plate (8); The inside of inner disc (10) is located outside heat exchange tube bundle (9) and is provided with round hole (11), one side outside round hole (11) is fixedly installed with high-pressure nozzle (12) along annular distribution, one side outside inner disc (10) is fixedly provided with connecting pipe (23), and high-pressure nozzle (12) is communicated with connecting pipe (23); Reset spring (13) is fixedly arranged on one side outside inner disc (10) close to round hole (11), fixed block (14) is fixedly arranged on the outside of reset spring (13), vibrator (16) is fixed on one side outside fixed block (14), and roller (15) is rotatably installed on one side inside fixed block (14).
2. A wet heat exhaust gas recycling apparatus for a malt kiln according to claim 1, characterized in that: The upper end between first tube plate (7) and second tube plate (8) is fixedly provided with slide rod (17), and inner disc (10) is slidably connected with slide rod (17).
3. A wet heat exhaust gas recycling apparatus for a malt kiln according to claim 2, characterized in that: The lower end between first tube plate (7) and second tube plate (8) is fixedly provided with rack (18), bottom shell (19) is arranged on the lower end of inner disc (10) and is located outside rack (18), and bottom shell (19) is fixedly connected with inner disc (10).
4. A wet heat exhaust gas recycling apparatus for a malt kiln according to claim 3, characterized in that: The inside of bottom shell (19) is fixedly provided with driving motor (21) on the upper end, the output end of driving motor (21) is provided with driving gear (22), and driving gear (22) is meshedly connected with rack (18).
5. A wet heat exhaust gas recycling apparatus for a malt kiln according to claim 4, characterized in that: The inside of bottom shell (19) is provided with rotating rod (20) on the lower end of rack (18), and rotating rod (20) is rotatably connected with bottom shell (19).
6. A wet heat exhaust gas recycling apparatus for a malt kiln according to claim 1, characterized in that: The two ends of heat exchange tube bundle (9) are fixedly connected with first tube plate (7) and second tube plate (8).