A descaling device for heat exchange tubes

Abstract

The utility model relates to pipeline descaling technical field, and disclose a kind of descaling device of heat exchange pipe, the descaling device of heat exchange pipe, including workbench, the top end surface of workbench is fixedly connected with water pool, the inside bottom surface of water pool is fixedly connected with ultrasonic generator, and the top end surface of workbench is provided with cleaning assembly.The descaling device of heat exchange pipe, cavitation bubble generated by ultrasonic wave, weaken the binding force of scale and pipe wall, make it loose even partial drop, and the scale that has loosened is rubbed, scraped by scrubbing block, ensure clean, cooperation, more thorough than pure rely on ultrasonic or mechanical cleaning, scrubbing block is attached to pipe wall, not easy to leave cleaning dead angle, scrubbing block is also accompanied by rotary friction, scale debris is more easily thrown, carried out pipeline, can cover more pipe wall area, stubborn scale can produce cutting and grinding effect, avoid single direction friction to form stripe type cleaning uneven.

Description

Technical Field

[0001] This utility model relates to the field of pipeline descaling technology, specifically a descaling device for heat exchange tubes. Background Technology

[0002] A heat exchanger is a device that uses the alternation of cold and hot fluids to exchange heat. After long-term use, it is inevitable to need maintenance. The main component that needs maintenance is the heat exchange tube. The heat exchange tubes in the current technology are generally serpentine tubes. Due to the bending nature of the serpentine tubes, cleaning and maintenance are inconvenient, and it is difficult to remove dirt.

[0003] According to a descaling device for a heat exchanger tube disclosed in the public notice (publication number: CN216081157U), the above application includes a base plate, a fixing plate is fixedly connected to one side of the upper surface of the base plate, and a reinforcing rib is fixedly connected to the bottom of the outer surface of the fixing plate. The descaling device for the heat exchanger tube is configured with a clamping member, a spring, a connecting rod and an ultrasonic generator. The clamping member is used to clamp and fix the serpentine heat exchanger tube.

[0004] However, in actual use, the ultrasonic waves in the aforementioned descaling devices attenuate as they propagate through the metal pipe wall and water. The longer the pipe and the more bends it has, the weaker the energy becomes at deeper locations, making it difficult to completely remove the scale using only the mechanical action of air, resulting in uneven cleaning effects. In view of this, we propose a descaling device for heat exchange tubes. Utility Model Content

[0005] The purpose of this invention is to provide a descaling device for heat exchange tubes to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a descaling device for heat exchange tubes, comprising a workbench, a water tank fixedly connected to the top end face of the workbench, an ultrasonic generator fixedly connected to the bottom inner surface of the water tank, and a cleaning assembly provided on the top end face of the workbench, the cleaning assembly comprising:

[0007] A connecting arm, the end face of which is inserted into a fixing seat;

[0008] A drive motor, the output end of which is fixedly connected to a screw, and the side wall of the screw is connected to a mounting plate;

[0009] A lead screw, wherein a slider is connected to the side wall of the lead screw, a tension spring is fixedly connected to the side wall of the slider, and a mounting base is fixedly connected to the end face of the tension spring;

[0010] The insert has a brush block fixedly connected to its bottom end face, and bolts are threadedly connected to the side wall of the insert.

[0011] Preferably, the connecting arm is fixedly connected to the inner wall of the pool, and the top of the fixing seat is provided with a circular slot.

[0012] Preferably, a bracket is fixedly connected to the top end face of the workbench, and a vertical plate is fixedly connected to the top end face of the bracket, and the vertical plate is fixedly connected to the drive motor.

[0013] Preferably, the bottom of the mounting plate is slidably connected to the top end face of the bracket, and a crossbar is fixedly connected to the side wall of the vertical plate. The crossbar is slidably connected to the mounting plate, and the crossbar restricts the mounting plate to move only laterally.

[0014] Preferably, the lead screw is fixedly connected to the vertical plate, and the slider is rotatably connected to the mounting plate.

[0015] Preferably, the insert block is fixedly connected to the end of the tension spring away from the slider, the brushing block is located above the fixed seat, the bolt is threadedly connected to the mounting seat, and the insert block is threadedly connected to the bolt. The brushing block can be replaced by unscrewing the bolt, so that the device can be adapted to heat exchange tubes with different inner diameters.

[0016] Preferably, the inner wall of the fixing base is fixedly connected with rubber strips, and the number of rubber strips is set in several groups, with the several groups of rubber strips arranged circumferentially at equal intervals on the inner wall of the fixing base.

[0017] Compared with the prior art, this utility model provides a descaling device for heat exchange tubes, which has the following beneficial effects:

[0018] 1. The descaling device for this heat exchanger tube, through its cleaning components, utilizes ultrasonic cavitation bubbles to weaken the bond between scale and the tube wall, causing it to loosen or even partially detach. The scrubbing blocks then rub and scrape away the loosened scale, ensuring thorough cleaning. This combination is more thorough than relying solely on ultrasonic or mechanical cleaning. The soft, diamond-sharp sponge blocks adhere to the tube wall, ensuring even cleaning and minimizing dead corners. The scrubbing blocks also rotate and rub, making it easier to fling away and remove scale debris from the pipe, covering a larger area of ​​the tube wall. Stubborn scale is cut and ground, preventing uneven cleaning caused by unidirectional friction.

[0019] 2. The descaling device for the heat exchange tube, through the installation of rubber strips, ensures that the heat exchange tube remains centered and stably positioned in the fixed seat, preventing it from shaking. At the same time, it absorbs some vibration energy, avoids direct hard contact between the tube wall and the metal fixed seat, and reduces the risk of damage. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the main structure of the present utility model;

[0021] Figure 2 This is a schematic diagram of the water tank structure of this utility model;

[0022] Figure 3 This utility model Figure 2 Schematic diagram of the structure of region A in the middle;

[0023] Figure 4 This is a schematic diagram of the screw structure of this utility model;

[0024] Figure 5 This utility model Figure 4 Schematic diagram of the structure of region B in the middle.

[0025] In the diagram: 1. Workbench; 2. Water tank; 3. Ultrasonic generator; 4. Cleaning assembly; 401. Connecting arm; 402. Fixing base; 403. Drive motor; 404. Screw; 405. Mounting plate; 406. Slider; 407. Tension spring; 408. Mounting base; 409. Insert block; 410. Brush block; 411. Bolt; 412. Lead screw; 5. Crossbar; 6. Rubber strip; 7. Bracket. Detailed Implementation

[0026] like Figures 1-5 As shown, this utility model provides a technical solution: a descaling device for heat exchange tubes, including a workbench 1, a water tank 2 fixedly connected to the top end face of the workbench 1, an ultrasonic generator 3 fixedly connected to the bottom inner surface of the water tank 2, and a cleaning assembly 4 provided on the top end face of the workbench 1. The cleaning assembly 4 includes a connecting arm 401, a fixing seat 402, a drive motor 403, a screw 404, a mounting plate 405, a slider 406, a tension spring 407, a mounting seat 408, an insert block 409, a brushing block 410, a bolt 411, and a lead screw 412.

[0027] In one embodiment of the present invention, the connecting arm 401 is fixedly connected to the inner wall of the pool 2, and a fixing seat 402 is inserted into the end face of the connecting arm 401. A circular slot is provided on the top of the fixing seat 402.

[0028] A bracket 7 is fixedly connected to the top end face of the workbench 1. A vertical plate is fixedly connected to the top end face of the bracket 7. The vertical plate is fixedly connected to the drive motor 403. A screw 404 is fixedly connected to the output end of the drive motor 403. A mounting plate 405 is drivenly connected to the side wall of the screw 404. The bottom of the mounting plate 405 is slidably connected to the top end face of the bracket 7. A crossbar 5 is fixedly connected to the side wall of the vertical plate. The crossbar 5 is slidably connected to the mounting plate 405. The crossbar 5 restricts the mounting plate 405 to move only laterally.

[0029] The lead screw 412 is fixedly connected to the vertical plate. The side wall of the lead screw 412 is connected to the slider 406. The slider 406 is rotatably connected to the mounting plate 405. The side wall of the slider 406 is fixedly connected to the tension spring 407. The end face of the tension spring 407 is fixedly connected to the mounting base 408.

[0030] The insert 409 is fixedly connected to the end of the tension spring 407 away from the slider 406. The bottom end face of the insert 409 is fixedly connected to the brush block 410. The side wall of the insert 409 is threaded with the bolt 411. The brush block 410 is located above the fixed seat 402. The bolt 411 is threadedly connected to the mounting seat 408. The insert 409 is threadedly connected to the bolt 411. The brush block 410 can be replaced by unscrewing the bolt 411, so that the device can be adapted to heat exchange tubes with different inner diameters.

[0031] The heat exchange tube is inserted into the mounting base 402 with its opening facing upwards. The ultrasonic generator 3 vibrates, generating cavitation bubbles that break down the scale on the inner wall of the heat exchange tube. The drive motor 403 drives the screw 404 to rotate, causing the mounting plate 405 to move to the left. The tension spring 407 descends and enters the heat exchange tube. A scrubbing block 410 is fixedly connected to one end of the tension spring 407 inside the heat exchange tube. The scrubbing block 410 is a sponge block with a diamond abrasive coating on its outer surface. The cavitation bubbles generated by the ultrasonic waves weaken the adhesion between the scale and the tube wall, causing it to loosen or even partially detach. The scrubbing block 410 rubs and scrapes away the loosened scale, ensuring thorough cleaning. The combination of these two methods provides a more thorough cleaning than relying solely on ultrasonic or mechanical cleaning. The soft, flexible diamond sponge block adheres to the pipe wall, ensuring even cleaning and minimizing dead corners. While the ordinary straight pipe cleaning block 410 only needs to move axially, S-shaped pipes have bends. If a rigid push rod is used, the cleaning block 410 may have difficulty passing through bends, easily getting stuck or even damaging the pipe wall. The tension spring 407, being flexible, can deform with the pipe's bends. When the screw 404 moves the mounting plate 405, the tension spring 407 transmits thrust while bending along the pipe's shape, providing stable thrust to ensure the cleaning block 410 advances inside the pipe and passes through bends smoothly.

[0032] As the mounting plate 405 moves laterally along the screw 404, the slider 406 also moves laterally along the lead screw 412. Since the lead screw 412 is fixed, the slider 406 rotates along with the tension spring 407 and the scrubbing block 410. The scrubbing block 410 not only moves linearly in the pipe, but also rotates and rubs, making it easier to throw off and carry out the pipe, covering more pipe wall area. Stubborn scale can produce a cutting and grinding effect, avoiding uneven cleaning caused by friction in one direction. The rotation direction of the slider 406 is consistent with the winding direction of the tension spring 407, preventing the tension spring 407 from becoming stretched, avoiding the spring stiffness from deteriorating and the thrust from weakening, and ensuring the stable force transmission of the tension spring 407.

[0033] In addition, a rubber strip 6 is fixedly connected to the inner wall of the fixing base 402. Several sets of rubber strips 6 are arranged circumferentially at equal intervals on the inner wall of the fixing base 402. When the heat exchange tube is inserted into the fixing base 402, the rubber strip 6 will be slightly compressed to generate an elastic clamping force. This ensures that the heat exchange tube remains centered and stably positioned in the fixing base 402 without shaking. At the same time, it absorbs some vibration energy and avoids direct hard contact between the tube wall and the metal fixing base 402, reducing the risk of damage.

[0034] In this invention, when in use, the heat exchange tube is inserted into the fixed base 402, the ultrasonic generator 3 vibrates to generate cavitation bubbles, which break down the scale on the inner wall of the heat exchange tube. The scrubbing block 410 rubs and scrapes away the loosened scale, ensuring a thorough cleaning. The combination of the two is more thorough than relying solely on ultrasonic or mechanical cleaning. The slider 406 rotates with the tension spring 407 and the scrubbing block 410. The scrubbing block 410 rotates and rubs, making it easier to throw off and carry out the scale debris from the pipe, covering more of the pipe wall area.

[0035] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. A descaling device for heat exchange tubes, comprising a workbench (1), wherein a water tank (2) is fixedly connected to the top end face of the workbench (1), and an ultrasonic generator (3) is fixedly connected to the bottom surface of the water tank (2), characterized in that: The top end face of the workbench (1) is provided with a cleaning assembly (4), the cleaning assembly (4) including: Connecting arm (401), with a fixing seat (402) inserted into the end face of the connecting arm (401). A drive motor (403) is provided, and a screw (404) is fixedly connected to the output end of the drive motor (403). A mounting plate (405) is connected to the side wall of the screw (404). A lead screw (412) is connected to a slider (406) via a transmission connection on its side wall. A tension spring (407) is fixedly connected to the side wall of the slider (406). A mounting base (408) is fixedly connected to the end face of the tension spring (407). Insert (409), the bottom end face of the insert (409) is fixedly connected to a brush block (410), and the side wall of the insert (409) is threadedly connected to a bolt (411).

2. The descaling device for a heat exchanger tube according to claim 1, characterized in that: The connecting arm (401) is fixedly connected to the inner wall of the pool (2), and the top of the fixing seat (402) is provided with a circular slot.

3. The descaling device for a heat exchanger tube according to claim 1, characterized in that: The top end face of the workbench (1) is fixedly connected to a bracket (7), and the top end face of the bracket (7) is fixedly connected to a vertical plate, which is fixedly connected to a drive motor (403).

4. The descaling device for a heat exchanger tube according to claim 3, characterized in that: The bottom of the mounting plate (405) is slidably connected to the top end face of the bracket (7), and a crossbar (5) is fixedly connected to the side wall of the vertical plate. The crossbar (5) is slidably connected to the mounting plate (405).

5. The descaling device for a heat exchanger tube according to claim 1, characterized in that: The lead screw (412) is fixedly connected to the vertical plate, and the slider (406) is rotatably connected to the mounting plate (405).

6. The descaling device for a heat exchanger tube according to claim 1, characterized in that: The insert (409) is fixedly connected to the end of the tension spring (407) away from the slider (406), the brush block (410) is located above the fixed seat (402), the bolt (411) is threadedly connected to the mounting seat (408), and the insert (409) is threadedly connected to the bolt (411).

7. The descaling device for a heat exchanger tube according to claim 1, characterized in that: The inner wall of the fixed base (402) is fixedly connected with rubber strips (6), and the number of rubber strips (6) is set in several groups, and the several groups of rubber strips (6) are circumferentially arranged at equal intervals on the inner wall of the fixed base (402).

Images