Water scale removing device for heating and ventilation pipeline

Abstract

The utility model discloses a scale removing device for a heating and ventilation pipeline, and belongs to the technical field of heating and ventilation pipelines. Comprising a center frame; the centering mechanisms are mounted at the two ends of the center frame; the roller is mounted on the centering mechanism; the scraper is arranged on the outer side of the middle of the center frame; the rotating mechanism is mounted between the scraper and the center frame; the center frame extends into the pipeline, the rollers are attached to the inner wall of the pipeline through the centering mechanism, the purpose of self-centering positioning is achieved, the rollers drive the device to walk along the inner wall of the pipeline, meanwhile, the rotating mechanism drives the scraper to rotate circumferentially to scrape scale on the inner wall of the pipeline, and cleaning liquid is sprayed through the spraying pipes. And scale on a long pipeline can be conveniently removed.

Description

Technical Field

[0001] This application relates to the field of HVAC duct technology, and more specifically, to a scale removal device for HVAC ducts. Background Technology

[0002] After a certain period of use, HVAC pipes may accumulate a lot of scale on their inner walls. Scale buildup can clog the pipes, reduce their thermal conductivity, cause uneven heating, and lead to deformation. Therefore, it is necessary to remove the scale from the inner walls of the pipes regularly.

[0003] Existing technology publication CN213067262U discloses a scale removal device for HVAC pipes, relating to the field of HVAC pipe technology. It includes a cylindrical functional housing; a circular air bladder fixedly connected to the left end of the functional housing; multiple sponge pads fixedly connected to the outside of the air bladder; an air guide pipe fixedly connected to the front end of the functional housing; the left end of the air guide pipe communicating with the air bladder; the right end of the air guide pipe communicating with an external inflation device; and a water guide pipe fixedly connected to the upper end of the air guide pipe and the front end of the functional housing; the right end of the water guide pipe communicating with an external pressurized descaling solution.

[0004] Although the existing technical solutions described above can achieve the relevant beneficial effects through their structure, they still have the following drawbacks:

[0005] The limited length of the functional housing restricts the cleaning length, making it impossible to remove longer HVAC ducts.

[0006] Regarding the aforementioned related technologies, the inventor believes that the limited length of the functional shell results in a limited cleaning length, making it impossible to clean longer HVAC pipes.

[0007] In view of this, we propose a scale removal device for HVAC pipes. Utility Model Content

[0008] 1. Technical problems to be solved

[0009] The purpose of this application is to provide a scale removal device for HVAC pipes, which solves the technical problem in the above-mentioned background technology that the limited length of the functional shell leads to a limited cleaning length and makes it impossible to clean longer HVAC pipes, thus achieving the desired technical effect.

[0010] 2. Technical Solution

[0011] This application provides a scale removal device for HVAC pipes, comprising:

[0012] Central frame;

[0013] A centering mechanism is provided at both ends of the central frame;

[0014] Rollers are mounted on the centering mechanism;

[0015] A scraper is provided on the outer side of the middle part of the central frame;

[0016] A rotating mechanism is installed between the scraper and the central frame;

[0017] The nozzle is fixedly sleeved at both ends of the central frame.

[0018] With the above scheme, the central frame extends into the pipe, and the centering mechanism makes the roller fit against the inner wall of the pipe to achieve self-centering positioning. The roller drives the device to move along the inner wall of the pipe, while the rotating mechanism drives the scraper to rotate circumferentially to scrape the scale on the inner wall of the pipe. The cleaning liquid is sprayed through the spray pipe, which makes it convenient to remove scale from long pipes.

[0019] Optionally, the centering mechanism includes a fixed frame. Three fixed frames are fixedly installed on the outer circumference of both ends of the central frame. A slider is slidably engaged within each fixed frame. A U-shaped frame is fixedly installed on the slider. A first motor is fixedly installed on the outer wall of the U-shaped frame. A roller is fixedly sleeved on the output shaft of the first motor. A screw is rotatably engaged between the central frame and the fixed frames. The screw is threadedly connected to the slider. A central shaft is rotatably sleeved within the central frame. A meshing bevel gear is sleeved between the central shaft and the screw. One end of the central shaft passes through the central frame and is fixedly sleeved with a knob. The fixed frames are evenly distributed along the circumference of the central frame. A locking bolt is threaded onto the knob, and the end face of the locking bolt is tightly pressed against the central frame. A cable and a water supply pipe are fixedly sleeved on the central frame outside the knob.

[0020] The above scheme uses a knob to rotate the central shaft, which in turn drives multiple screws to rotate via bevel gears. These screws, in turn, drive the sliders to slide simultaneously, causing the rollers to contact the inner wall of the pipe. Three-point positioning ensures that the central frame coincides with the pipe axis, guaranteeing that the scraper removes scale from the inner wall of the pipe when it rotates. The first motor drives the rollers to rotate, allowing the device to move along the pipe axis, facilitating the cleaning of the inner walls of longer pipes.

[0021] Optionally, the rotating mechanism includes a gear ring, which is rotatably engaged with the outer circumference of the central frame. A second motor is fixedly sleeved inside the central frame, and a drive gear is fixedly sleeved on the output shaft of the second motor. The drive gear meshes with the gear ring. A fixed cylinder is fixedly connected to the outer wall of the gear ring. A slide rod is slidably engaged inside the fixed cylinder. Multiple clamping plates are fixedly installed on the end face of the fixed cylinder. A locking sleeve is movably sleeved on the slide rod. The locking sleeve is threaded to the outer wall of the clamping plate. The multiple clamping plates are evenly distributed along the circumference of the fixed cylinder. The inner wall of the clamping plate is an arc-shaped structure that fits the outer wall of the slide rod. Both the outer wall of the clamping plate and the inner wall of the locking sleeve are frustum-shaped inclined structures with a smaller upper surface and a larger lower surface.

[0022] With the above method, after the roller at one end of the central frame is positioned against the inner wall of the pipe, the locking sleeve is loosened, thereby pulling the slide rod so that the scraper is in contact with the inner wall of the pipe. Then the locking sleeve is tightened, and the locking sleeve squeezes the clamping plate through the inclined surface of the truncated cone, so that the clamping plate clamps the slide rod for locking. The second motor drives the drive gear to rotate, and the drive gear drives the gear ring to rotate, thereby making the scraper scrape off the scale along the inner wall of the pipe circumference.

[0023] 3. Beneficial effects

[0024] One or more technical solutions provided in this application have at least the following technical effects or advantages:

[0025] 1. This application uses a knob to drive the central shaft to rotate, and the central shaft drives multiple screws to rotate simultaneously through bevel gears. The screws simultaneously drive the slider to slide, so that the rollers simultaneously contact the inner wall of the pipe. Three-point positioning ensures that the central frame coincides with the pipe axis, ensuring that the scraper removes scale from the inner wall of the pipe when it rotates. The first motor drives the rollers to rotate, so that the device can move along the pipe axis, which is convenient for cleaning the inner wall of long pipes.

[0026] 2. Loosen the locking sleeve to pull the slide rod, making the scraper fit against the inner wall of the pipe. Then tighten the locking sleeve. The locking sleeve presses against the clamping plate through the truncated cone, making the clamping plate clamp the slide rod and lock it. The second motor drives the drive gear to rotate, and the drive gear drives the gear ring to rotate, so that the scraper scrapes away the scale along the inner circumference of the pipe. Combined with the spray nozzle spraying cleaning fluid, the scale removal effect is improved. Attached Figure Description

[0027] Figure 1 This is a cross-sectional structural schematic diagram of a scale removal device for HVAC pipes disclosed in a preferred embodiment of this application;

[0028] Figure 2 This application discloses a preferred embodiment. Figure 1 Enlarged structural diagram at point A in the middle;

[0029] Figure 3 This application discloses a preferred embodiment. Figure 2 Enlarged structural diagram at point B;

[0030] Figure 4 This application discloses a preferred embodiment. Figure 3 Enlarged structural diagram at point C;

[0031] The following are the labels in the diagram: 1. Center frame; 2. Centering mechanism; 21. Fixed frame; 22. Slider; 23. U-shaped frame; 24. First motor; 25. Screw; 26. Central shaft; 27. Bevel gear; 28. Knob; 3. Roller; 4. Scraper; 5. Rotating mechanism; 51. Gear ring; 52. Second motor; 53. Drive gear; 54. Fixed cylinder; 55. Slide rod; 56. Clamping plate; 57. Locking sleeve; 6. Nozzle. Detailed Implementation

[0032] The present application will be further described in detail below with reference to the accompanying drawings.

[0033] Reference Figure 1 This application provides a scale removal device for HVAC pipes, comprising: a central frame 1; a centering mechanism 2, with centering mechanisms 2 installed at both ends of the central frame 1; rollers 3, with rollers 3 installed on the centering mechanisms 2; a scraper 4, with a scraper 4 located on the outer side of the middle part of the central frame 1; a rotating mechanism 5, with a rotating mechanism 5 installed between the scraper 4 and the central frame 1; and a spray pipe 6, with a spray pipe 6 fixedly connected to both ends of the central frame 1. The central frame 1 extends into the pipe, and the centering mechanism 2 causes the rollers 3 to conform to the inner wall of the pipe, achieving self-centering and positioning. The rollers 3 drive the device to move along the inner wall of the pipe, while the rotating mechanism 5 drives the scraper 4 to rotate circumferentially to scrape the scale on the inner wall of the pipe, and the spray pipe 6 sprays cleaning liquid, which is convenient for removing scale from long pipes.

[0034] Reference Figure 1 and Figure 2 The centering mechanism 2 includes a fixed frame 21. Three fixed frames 21 are fixedly installed on the outer walls of both ends of the center frame 1. Sliding blocks 22 are slidably engaged within each fixed frame 21. A U-shaped frame 23 is fixedly installed on the sliding block 22. A first motor 24 is fixedly installed on the outer wall of the U-shaped frame 23. A roller 3 is fixedly sleeved on the output shaft of the first motor 24. A screw 25 is rotatably engaged between the center frame 1 and the fixed frames 21. The screw 25 is threadedly connected to the sliding block 22. A central shaft 26 is rotatably sleeved within the center frame 1. A meshing bevel gear 27 is sleeved between the central shaft 26 and the screw 25. One end of the central shaft 26 passes through the center frame 1 and is fixedly sleeved with a knob 28. The fixed frames 21 are circumferential along the center frame 1. The knobs 28 are evenly distributed in the circumferential direction. A locking bolt is threaded onto the knob 28, and the end face of the locking bolt is tightly pressed against the central frame 1. A cable and a water supply pipe are fixedly connected to the central frame 1 outside the knob 28. The knob 28 drives the central shaft 26 to rotate. The central shaft 26 drives multiple screws 25 to rotate simultaneously through the bevel gear 27. The screws 25 drive the slider 22 to slide simultaneously, so that the roller 3 simultaneously fits against the inner wall of the pipe. The central frame 1 is aligned with the pipe axis through three-point positioning, ensuring that the scraper 4 scrapes away the scale on the inner wall of the pipe when it rotates. The first motor 24 drives the roller 3 to rotate, so that the device can move along the pipe axis, which is convenient for cleaning the inner wall of long pipes.

[0035] Refer to 2 to Figure 4 The rotating mechanism 5 includes a gear ring 51. The gear ring 51 is rotatably engaged with the outer circumference of the center frame 1. A second motor 52 is fixedly sleeved inside the center frame 1. The output shaft of the second motor 52 is fixedly sleeved with a drive gear 53, which meshes with the gear ring 51. A fixed cylinder 54 is fixedly connected to the outer wall of the gear ring 51. A slide rod 55 is slidably engaged inside the fixed cylinder 54. Multiple clamping plates 56 are fixedly installed on the end face of the fixed cylinder 54. A locking sleeve 57 is movably sleeved on the slide rod 55. The locking sleeve 57 is threadedly connected to the outer wall of the clamping plate 56. The multiple clamping plates 56 are evenly distributed along the circumference of the fixed cylinder 54. The inner wall of the device is an arc-shaped structure that fits the outer wall of the slide rod 55. The outer wall of the clamping plate 56 and the inner wall of the locking sleeve 57 are both truncated cone-shaped structures with a smaller upper surface and a larger lower surface. After the roller 3 at one end of the central frame 1 is positioned against the inner wall of the pipe, the locking sleeve 57 is loosened, thereby pulling the slide rod 55 so that the scraper 4 fits against the inner wall of the pipe. Then the locking sleeve 57 is tightened. The locking sleeve 57 presses the clamping plate 56 through the truncated cone-shaped structure, so that the clamping plate 56 clamps the slide rod 55 and locks it. The second motor 52 drives the drive gear 53 to rotate, and the drive gear 53 drives the gear ring 51 to rotate, thereby causing the scraper 4 to scrape away the scale along the inner wall of the pipe circumference.

[0036] Working principle: The knob 28 drives the central shaft 26 to rotate, and the central shaft 26 drives multiple screws 25 to rotate simultaneously through the bevel gear 27. The screws 25 simultaneously drive the slider 22 to slide, so that the roller 3 simultaneously contacts the inner wall of the pipe. The three-point positioning makes the central frame 1 coincide with the pipe axis, ensuring that the scraper 4 scrapes away the scale on the inner wall of the pipe when it rotates. The first motor 24 drives the roller 3 to rotate, so that the device can move along the pipe axis, which is convenient for cleaning the inner wall of long pipes. Loosening the locking sleeve 57 pulls the slide rod 55, so that the scraper 4 contacts the inner wall of the pipe. Then tighten the locking sleeve 57. The locking sleeve 57 squeezes the clamping plate 56 through the truncated cone, so that the clamping plate 56 clamps the slide rod 55 for locking. The second motor 52 drives the drive gear 53 to rotate, and the drive gear 53 drives the gear ring 51 to rotate, so that the scraper 4 scrapes away the scale along the inner wall of the pipe circumference. Combined with the spray nozzle 6 spraying cleaning liquid, the scale removal effect is improved.

Claims

1. A scale removal device for HVAC pipes, characterized in that: Include: Central frame (1); Centering mechanism (2), with centering mechanism (2) installed at both ends of the central frame (1); Roller (3), the centering mechanism (2) is equipped with roller (3); Scraper (4), the scraper (4) is provided on the outer side of the middle part of the central frame (1); A rotating mechanism (5) is installed between the scraper (4) and the center frame (1); The nozzle (6) is fixedly sleeved at both ends of the central frame (1).

2. The scale removal device for HVAC pipes according to claim 1, characterized in that: The centering mechanism (2) includes a fixed frame (21). Three fixed frames (21) are fixedly installed on the outer walls of both ends of the center frame (1). Sliding blocks (22) are slidably engaged in the fixed frames (21). A U-shaped frame (23) is fixedly installed on the sliding block (22). A first motor (24) is fixedly installed on the outer wall of the U-shaped frame (23). A roller (3) is fixedly sleeved on the output shaft of the first motor (24). A screw (25) is rotatably engaged between the center frame (1) and the fixed frame (21). The screw (25) is threadedly connected to the sliding block (22). A central shaft (26) is rotatably sleeved in the center frame (1). A bevel gear (27) meshes between the central shaft (26) and the screw (25). One end of the central shaft (26) passes through the center frame (1) and is fixedly sleeved with a knob (28).

3. The scale removal device for HVAC pipes according to claim 2, characterized in that: The fixed frame (21) is evenly distributed along the circumference of the central frame (1). The knob (28) is threaded with a locking bolt, and the end face of the locking bolt is tightly pressed on the central frame (1). A cable and a water supply pipe are fixedly connected to the central frame (1) outside the knob (28).

4. The scale removal device for HVAC pipes according to claim 1, characterized in that: The rotating mechanism (5) includes a gear ring (51). The gear ring (51) is rotatably engaged on the outer circumference of the center frame (1). A second motor (52) is fixedly sleeved inside the center frame (1). The output shaft of the second motor (52) is fixedly sleeved on a drive gear (53). The drive gear (53) meshes with the gear ring (51). A fixed cylinder (54) is fixedly connected to the outer wall of the gear ring (51). A slide rod (55) is slidably engaged inside the fixed cylinder (54). Multiple clamping plates (56) are fixedly installed on the end face of the fixed cylinder (54). A locking sleeve (57) is movably sleeved on the slide rod (55). The locking sleeve (57) is threadedly connected to the outer wall of the clamping plate (56).

5. A scale removal device for HVAC pipes according to claim 4, characterized in that: Multiple clamping plates (56) are evenly distributed along the circumference of the fixed cylinder (54). The inner wall of the clamping plate (56) is an arc-shaped structure that fits the outer wall of the slide rod (55). The outer wall of the clamping plate (56) and the inner wall of the locking sleeve (57) are both truncated cone-shaped inclined structures with a smaller upper part and a larger lower part.

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