Device for removing dirt in heat exchange tube
By designing a device that includes a cleaning head and a lead screw drive, the problem of heat exchange tube damage caused by traditional cleaning methods is solved, and safe and efficient dirt removal is achieved.
Patent Information
- Application Number
- CN202520128707.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-20
- Publication Date
- 2026-02-03
- Estimated Expiration
- 2035-01-20
AI Technical Summary
Traditional methods of cleaning heat exchanger tubes can easily damage the tube walls, especially when there is severe scaling or corrosion, and the effect of high-pressure water impact is not good.
Design a device comprising a cleaning head, lead screw nut, bearing housing, rotary joint, support legs, running wheels, handle, track, lead screw and inner sleeve. The cleaning head is driven to rotate inside the heat exchange tube by the lead screw drive and the water pressure of the hollow structure is used to flush out the dirt.
It effectively removes dirt from inside the heat exchange tubes, avoids damage to the tube walls caused by high-pressure water impact, and achieves a safe and efficient cleaning effect.
Smart Images
Figure CN223869914U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a device for removing scale inside heat exchanger tubes, belonging to the technical field of heat exchanger equipment. Background Technology
[0002] Traditional heat exchanger tube cleaning methods typically involve direct cleaning with a high-pressure water gun. However, when the heat exchanger tubes are severely scaled or corroded internally, the high-pressure water impact is ineffective and may even damage the inner wall of the heat exchanger tubes due to water pressure. Utility Model Content
[0003] The purpose of this invention is to provide a device for cleaning scale inside heat exchange tubes, which can clean the scale inside the heat exchange tubes, prevent the heat exchange tubes from being damaged by high-pressure water impact, and solve the problems existing in the background art.
[0004] The technical solution of this utility model is:
[0005] A device for cleaning fouling inside heat exchange tubes includes a cleaning head, a lead screw nut, a bearing housing, a rotary joint, support legs, wheels, handles, a track, a lead screw, and an inner sleeve. The bearing housing contains a bearing box, and the inner sleeve is rotatably connected to the bearing box via a bearing. Wheels are located below the bearing housing, and handles are located on both sides of the bearing housing. The lead screw has a hollow structure; one end is connected to the cleaning head, and the other end is connected to the rotary joint via the inner sleeve. The lead screw nut is threaded onto the lead screw. One end of the track is fixed to the lead screw nut, and the other end is attached to the support legs. Wheels are mounted on the track below the bearing housing.
[0006] One end of the cleaning head is threadedly connected to a lead screw, and the other end of the cleaning head has a pyramidal structure and is radially provided with several water outlet holes that are connected to the hollow lead screw.
[0007] The cleaning head is equipped with a stainless steel ring mesh that matches the heat exchange tube.
[0008] The stainless steel ring mesh is fixed to the cleaning head by a retaining ring B.
[0009] The lead screw nut is fixed to the hanger rod, and the hanger rod is fixed to the crossbar.
[0010] The crossbar is fitted with the heat exchanger.
[0011] One end of the inner sleeve is an inner sleeve interface B that is threadedly connected to the lead screw, and the other end is an inner sleeve interface A that is threadedly connected to the rotary joint.
[0012] The beneficial effects of this utility model are: the cleaning head moves forward inside the heat exchange tube under the drive of the lead screw, and generally removes the dirt on the inner wall by rotating. At the same time, the water pressure in the hollow lead screw flushes the cleaned dirt out of the heat exchange tube in time. Attached Figure Description
[0013] Figure 1 This is the front view of the present utility model;
[0014] Figure 2 This is a top view of the present invention;
[0015] Figure 3 This is a schematic diagram of the bearing housing of this utility model;
[0016] Figure 4 This is a schematic diagram of the cleaning head of this utility model;
[0017] Figure 5 for Figure 4 AA section view;
[0018] In the diagram: 1. Cleaning head; 2. Fastening bolt A; 3. Fastening bolt B; 4. Hanging rod; 5. Crossbar; 6. Screw nut; 7. Bearing box; 8. Rotary joint; 9. Support leg; 10. Fixing bolt; 11. Traveling wheel; 12. Handle; 13. Track; 14. Screw; 15. Dustproof ring; 16. Snap ring A; 17. Bearing box; 18. Inner sleeve; 19. Screw; 20. Stainless steel head; 21. Stainless steel ring mesh; 22. Snap ring B; 23. Water outlet; 24. Inner sleeve interface A; 25. Inner sleeve interface B; 26. Detailed Implementation
[0019] The present invention will be further described below with reference to the accompanying drawings and examples.
[0020] See attached document Figure 1-5 A device for cleaning fouling inside heat exchange tubes includes a cleaning head 1, a lead screw nut 6, a bearing housing 7, a rotary joint 8, a support leg 9, casters 11, a handle 12, a track 13, a lead screw 14, and an inner sleeve 19. The bearing housing 7 contains a bearing box 18, and the inner sleeve 19 is rotatably connected to the bearing box 18 via a bearing 17. Casters 11 are located below the bearing housing 7, and handles 12 are located on both sides of the bearing housing 7. The lead screw 14 has a hollow structure; one end of the lead screw 14 is connected to the cleaning head 1, and the other end is connected to the rotary joint 8 via the inner sleeve 19. The lead screw nut 6 is threaded onto the lead screw 14. One end of the track 13 is fixed to the lead screw nut 6, and the other end of the track 13 rests on the support leg 9. The casters 11 below the bearing housing 7 are mounted on the track 13.
[0021] In this embodiment, refer to the appendix Figure 1-4The device includes a cleaning head 1, fastening bolts A2 and B3, a lifting rod 4, a crossbar 5, a lead screw nut 6, a bearing housing 7, a rotary joint 8, a support leg 9, a fixing bolt 10, a traveling wheel 11, a handle 12, a track 13, a lead screw 14, a dustproof ring 15, a retaining ring A16, a bearing 17, a bearing box 18, an inner sleeve 19, a screw 20, a stainless steel head 21, a stainless steel ring mesh 22, a retaining ring B23, a water outlet 24, an inner sleeve interface A25, and an inner sleeve interface B26, wherein:
[0022] The lead screw 14 and the lead screw nut 6 together constitute the lead screw transmission assembly. The lead screw 14 has a hollow structure, and a cleaning head 1 is installed at one end. The bearing housing 7 contains a dustproof ring 15, a retaining ring A16, a bearing 17, a bearing box 18, an inner sleeve 19, and a screw 20. The other end of the lead screw 14 is threadedly connected to the inner sleeve interface B26 in the bearing housing 7 and fixed with a pin 20. The inner sleeve interface A25 is threadedly connected to the rotary joint 8. AVG casters 11 that can move on the track 13 are installed below the bearing housing 7, and manual handles 12 are installed on both sides. One end of the track 13 is connected to the lead screw nut 6 with a fixing bolt 10, and the other end is attached to the support leg 9. The support leg 9 can be manually adjusted in height, and four casters are installed at the bottom. The screw nut 6 is threadedly connected to the hanger rod 4. The extension length of the hanger rod 4 can be adjusted by adjusting the bolts. A crossbar 5 is installed in the upper through hole. The threaded end of the crossbar 5 can be connected to the tube sheet flange of the heat exchanger and fixed to the tube sheet flange with fastening nuts A2 and B3. A stainless steel annular mesh 22 is installed on the outer ring surface of the cleaning head 1 and fixed with a retaining ring B23. Several cutting edges are machined on the outer wall of the stainless steel head 21, and radial water outlet holes 24 are machined.
[0023] During assembly, first assemble the bearing housing 7, then connect the rotary joint 8 to the inner sleeve interface A25 inside the bearing housing 7, connect the lead screw 14 to the inner sleeve interface B26, and fix the lead screw 14 with screw 20 to prevent loosening. Next, assemble the cleaning head 1 and connect it to the lead screw 14; finally, thread the hanger 4 to the lead screw nut 6, pass the crossbar 5 through the through hole on the hanger 4, and tighten the fastening bolt B3.
[0024] During on-site installation, pass the crossbar 5 through the bolt hole at the highest point of the heat exchanger tube sheet flange and fix the crossbar 5 with fastening bolt A2. At the same time, fix the rail 13 to the screw nut 6 with fixing bolt 10 and support the other end with the support leg 9 to ensure that the rail 13 is basically horizontal. Finally, connect the cleaning water pipe to the rotary joint 8.
[0025] During cleaning, push the handle 12 back and forth, and the AVG travel wheel 11 under the bearing housing 7 runs along the track 13. The cleaning head 1 rotates and moves forward inside the heat exchange tube, and the dirt that is cleaned is flushed out by the cleaning water. When cleaning on the same horizontal line, the support legs 9 and the hanging rod 4 can be moved left and right. When cleaning up and down, the extension height or length of the support legs 9 and the hanging rod 4 can be adjusted at the same time.
Claims
1. A device for removing scale from the inside of heat exchange tubes, characterized in that: The device includes a cleaning head (1), a lead screw nut (6), a bearing housing (7), a rotary joint (8), a support leg (9), a running wheel (11), a handle (12), a track (13), a lead screw (14), and an inner sleeve (19). The bearing housing (7) is equipped with a bearing box (18), and the inner sleeve (19) is rotatably connected to the bearing box (18) through a bearing (17). The running wheel (11) is located below the bearing housing (7), and the handle (12) is located on both sides of the bearing housing (7). The lead screw (14) is a hollow structure. One end of the lead screw (14) is connected to the cleaning head (1), and the other end of the lead screw (14) is connected to the rotary joint (8) through the inner sleeve (19). The lead screw nut (6) is threaded onto the lead screw (14). One end of the track (13) is fixed to the lead screw nut (6), and the other end of the track (13) is attached to the support leg (9). The running wheel (11) below the bearing housing (7) is set on the track (13).
2. The device for removing fouling inside a heat exchange tube according to claim 1, characterized in that: One end of the cleaning head (1) is threadedly connected to the lead screw (14), and the other end of the cleaning head (1) is a pyramidal structure with several water outlet holes (24) that are connected to the hollow lead screw (14) in the radial direction.
3. The device for removing fouling inside a heat exchange tube according to claim 2, characterized in that: The cleaning head (1) is provided with a stainless steel ring mesh (22) that cooperates with the heat exchange tube.
4. The device for removing fouling inside a heat exchange tube according to claim 3, characterized in that: The stainless steel ring mesh (22) is fixed to the cleaning head (1) by a retaining ring B (23).
5. The device for removing fouling inside a heat exchange tube according to claim 1, characterized in that: The lead screw nut (6) is fixed on the hanger rod (4), and the hanger rod (4) is fixed on the crossbar (5).
6. The device for removing fouling inside a heat exchange tube according to claim 5, characterized in that: The crossbar (5) is fitted with the heat exchanger.
7. The device for removing fouling inside a heat exchange tube according to claim 1, characterized in that: One end of the inner sleeve (19) is an inner sleeve interface B (26) that is threadedly connected to the lead screw (14), and the other end is an inner sleeve interface A (25) that is threadedly connected to the rotary joint (8).