CN-224230630-U - Hot air waste heat recovery device

Abstract

The utility model provides a hot air waste heat recovery device, which relates to the technical field of waste heat recovery and comprises a filter box, wherein a partition plate is arranged in the filter box, the interior of the filter box is divided into an air guide chamber and a filter chamber from left to right by the partition plate, one side of the filter box is provided with a hot air input pipe communicated with the air guide chamber, the other side of the filter box is provided with a heat exchanger body, a hot air inlet of the heat exchanger body is communicated with the filter chamber, the lower part of the partition plate is provided with a through hole communicated with the air guide chamber and the filter chamber, a filter screen is arranged at the through hole, a filter assembly is detachably arranged in the filter chamber, the bottom of the filter box is provided with a drain pipe communicated with the air guide chamber, and a drain valve is arranged on the drain pipe.

Inventors

• Huang Xugao
• ZHANG XUELIANG
• ZHANG HUA

Assignees

• 三明市丰润化工有限公司

Dates

Publication Date

20260512

Application Date

20250521

Claims (10)

1. 1. The hot air waste heat recovery device is characterized by comprising a filter box, wherein a partition plate is arranged in the filter box, the inside of the filter box is divided into an air guide chamber and a filter chamber from left to right by the partition plate, one side of the filter box is provided with a hot air input pipe communicated with the air guide chamber, the other side of the filter box is provided with a heat exchanger body, a hot air inlet of the heat exchanger body is communicated with the filter chamber, the lower part of the partition plate is provided with a through hole communicated with the air guide chamber and the filter chamber, a filter screen is arranged at the through hole, a filter assembly is detachably arranged in the filter chamber, the bottom of the filter box is provided with a drain pipe communicated with the air guide chamber, and a drain valve is arranged on the drain pipe.
2. 2. The hot air waste heat recovery device according to claim 1, wherein the filtering assembly comprises a cover plate, a first connecting plate, a filtering cage, a second connecting plate and an ash receiving disc, the bottom of the cover plate is connected with the top of the filtering cage through the first connecting plate, the bottom of the filtering cage is connected with the ash receiving disc through the second connecting plate, the first connecting plate and the second connecting plate are oppositely arranged, an opening communicated with the filtering chamber is formed in the top of the filtering box, the cover plate is matched with the opening, and the filtering assembly is arranged in the filtering chamber in a drawing and inserting mode through the opening.
3. 3. The hot air waste heat recovery device according to claim 2, wherein a filter filler is arranged in the filter cage.
4. 4. The apparatus for recovering waste heat of hot air according to claim 3, wherein said filter filler is activated carbon.
5. 5. The hot air waste heat recovery device according to claim 2, wherein a first sealing ring is arranged at the joint of the cover plate and the filter box, and a locking component for locking the cover plate at the opening is arranged at the top of the filter box.
6. 6. The hot air waste heat recovery device according to claim 5, wherein the locking assembly comprises a threaded column, a tightening block and a locking nut, one end of the threaded column is fixedly arranged at the top of the filter box, a through hole matched with the threaded column is formed in the tightening block, the tightening block is movably sleeved on the threaded column through the through hole, the locking nut is in threaded connection with the threaded column and is located above the tightening block, and the tightening block can be tightened against the top of the cover plate by tightening the locking nut.
7. 7. The hot air waste heat recovery device according to claim 6, wherein two locking assemblies are symmetrically arranged.
8. 8. The hot air waste heat recovery device according to claim 1, further comprising a cleaning assembly, wherein the cleaning assembly comprises a cleaning block and a cleaning air cylinder, the cleaning block is matched with the air guide chamber in size, the cleaning block is movably arranged in the air guide chamber, the cleaning air cylinder is fixedly arranged at the top of the filter box, and a telescopic rod of the cleaning air cylinder extends into the air guide chamber to be connected with the cleaning block.
9. 9. The hot air waste heat recovery device according to claim 8, wherein a second sealing ring is arranged at the joint of the telescopic rod of the cleaning cylinder and the filter box.
10. 10. The apparatus of claim 8, wherein the bottom of the cleaning block is inclined, and the inclined surface of the cleaning block is opposite to the air outlet of the hot air inlet pipe.

Description

Hot air waste heat recovery device Technical Field The application relates to the technical field of waste heat recovery, in particular to a hot air waste heat recovery device. Background In the silica production process, hot air is generated in the spray drying step. In the link, hot air enters from the bottom of the equipment, fully contacts with spray particles and carries out heat exchange, so that moisture in the particles is rapidly evaporated, and the aim of drying is fulfilled. In some large-scale silica manufacturers, heat exchangers are often arranged to recover waste heat in hot air generated by the silica manufacturers, and shell-and-tube heat exchangers are common. However, in the heat exchange process, fine particles exist in the hot air, and these particles accumulate on the inner wall of the tube of the shell-and-tube heat exchanger over time to form dirt, which not only reduces the heat conducting performance of the heat exchanger, but also reduces the sectional area of the fluid channel and increases the resistance of the fluid, thereby affecting the heat exchange efficiency. Disclosure of Invention The embodiment of the application aims to provide a hot air waste heat recovery device, which can solve the technical problems that fine particles in hot air can be accumulated on the inner wall of a heat exchanger pipeline and a heat exchange plate to form dirt in the heat exchange process when a heat exchanger is adopted to recover hot air waste heat in a spray drying link of silicon dioxide in the prior art, so that the heat conducting performance of the heat exchanger can be reduced, the sectional area of a fluid channel is reduced, the fluid resistance is increased, and the heat exchange efficiency is further influenced. The embodiment of the application provides a hot air waste heat recovery device, which comprises a filter box, wherein a partition plate is arranged in the filter box, the inside of the filter box is divided into an air guide chamber and a filter chamber from left to right by the partition plate, one side of the filter box is provided with a hot air input pipe communicated with the air guide chamber, the other side of the filter box is provided with a heat exchanger body, a hot air inlet of the heat exchanger body is communicated with the filter chamber, the lower part of the partition plate is provided with a through hole communicated with the air guide chamber and the filter chamber, a filter screen is arranged at the through hole, a filter assembly is detachably arranged in the filter chamber, the bottom of the filter box is provided with a drain pipe communicated with the air guide chamber, and a drain valve is arranged on the drain pipe. Further, the filter component comprises a cover plate, a first connecting plate, a filter cage, a second connecting plate and an ash receiving disc, wherein the bottom of the cover plate is connected with the top of the filter cage through the first connecting plate, the bottom of the filter cage is connected with the ash receiving disc through the second connecting plate, the first connecting plate and the second connecting plate are oppositely arranged, an opening communicated with the filter chamber is formed in the top of the filter box, the cover plate is matched with the opening, and the filter component is arranged in the filter chamber through the opening in a drawing and inserting mode. Further, a filter filler is arranged in the filter cage. Further, the filter filler is activated carbon. Further, a first sealing ring is arranged at the joint of the cover plate and the filter box, and a locking assembly used for locking the cover plate at the opening is arranged at the top of the filter box. Further, locking assembly includes the screw thread post, supports tight piece and lock nut, the one end of screw thread post set firmly in the top of rose box, support be equipped with on the tight piece with the through-hole of screw thread post looks adaptation, support tight piece through the through-hole movable sleeve is located on the screw thread post, lock nut with screw thread post threaded connection just is located support the top of tight piece, can make through tightening lock nut support tight piece and support tightly the top of apron. Further, two locking assemblies are arranged and are symmetrically arranged. Further, still include the clearance subassembly, the clearance subassembly includes clearance piece and clearance cylinder, the size of clearance piece with air guide chamber looks adaptation, the clearance piece activity set up in the air guide chamber, the clearance cylinder set firmly in the top of rose box, the telescopic link of clearance cylinder extends to in the air guide chamber with the clearance piece is connected. Further, a second sealing ring is arranged at the joint of the telescopic rod of the cleaning cylinder and the filtering box. Further, the bottom of the cleaning block is obliquely arranged,