A refrigeration equipment drain pipe blockage monitoring device and monitoring system

Abstract

The present invention discloses a refrigeration equipment drain pipe blockage monitoring device and monitoring system, belonging to the field of sound wave detection, including an exciter and an infrasound receiver. The exciter is used to excite the outer wall of the refrigeration equipment drain pipe to generate infrasound waves, and the infrasound receiver is used to receive the infrasound wave signal. The device also includes: a mounting base fixedly connected to a connecting plate at both ends, the connecting plate having a connecting hole and an arc-shaped slide, the arc-shaped slide and the connecting hole being concentrically arranged; the exciter and the infrasound receiver are mounted on the mounting base; a fixed plate fixedly connected to the two ends of the arc-shaped plate, the fixed plate rotatably connected to the connecting hole, the fixed plate having a screw hole, a screw threaded in the screw hole, a fitting fixedly connected to the end of the screw, the fitting being able to press the outer wall of the refrigeration equipment drain pipe; and the screw being located in the arc-shaped slide. This invention has the advantage of being able to measure from multiple angles.

Description

Technical Field

[0001] The present invention belongs to the technical field of acoustic wave detection, and in particular relates to a device and a system for monitoring the blockage of a drainage pipe of a refrigeration device. Background Art

[0002] Drain pipe blockage is a common problem in the daily operation and maintenance of refrigeration equipment. Timely and accurate monitoring of blockage is crucial to ensuring the normal operation of refrigeration equipment. Currently, most commonly used refrigeration equipment drain pipe blockage monitoring devices on the market use a fixed structure. An exciter vibrates the drain pipe to generate infrasound waves, and an infrasound receiver receives the infrasound echo to determine the blockage condition.

[0003] However, this fixed monitoring device has significant drawbacks. The fixed positions of its exciter and infrasound receiver make it difficult to achieve multi-directional and multi-angle measurements. Due to the complex structure of drain pipes, blockages can occur at different locations and angles within the pipe. Fixed monitoring devices are unable to fully receive infrasound signals from these locations, resulting in errors in the determination of blockage conditions. This results in low monitoring accuracy and a narrow range, making it unable to meet the precise requirements for monitoring blockages in refrigeration equipment drain pipes in practical applications. A blockage monitoring device capable of multi-angle measurements is urgently needed. Summary of the Invention

[0004] In response to the problems existing in the prior art, the present invention provides a refrigeration equipment drain pipe blockage monitoring device and monitoring system, which has the advantage of being able to measure from multiple angles and solves the problems of the prior art.

[0005] The present invention is implemented as follows: a refrigeration equipment drain pipe blockage monitoring device includes an exciter and an infrasound receiver, wherein the exciter is used to excite the outer wall of the refrigeration equipment drain pipe to generate infrasound waves, and the infrasound receiver is used to receive the infrasound wave signal, and further includes:

[0006] A mounting seat, wherein both ends of the mounting seat are fixedly connected to a connecting plate, the connecting plate has a connecting hole and an arc-shaped slide, and the arc-shaped slide and the connecting hole are concentrically arranged; the exciter and the infrasound receiver are mounted on the mounting seat;

[0007] An arc-shaped plate, wherein both ends of the arc-shaped plate are fixedly connected to a fixing plate, wherein the fixing plate is rotatably connected to the connecting hole, a screw hole is provided on the fixing plate, a screw rod is threadedly connected to the screw hole, and the end of the screw rod is fixedly connected to a fitting, wherein the fitting can press the outer wall of the drainage pipe of the refrigeration equipment; and the screw rod is located in an arc-shaped slide.

[0008] As a preferred embodiment of the present invention, the two connection positions of the connecting plate and the fixing plate are both rotatably connected by bolts.

[0009] As a preferred embodiment of the present invention, one connecting position of the connecting plate and the fixed plate is rotatably connected by a bolt; the other connecting position is connected by the following structure: a card slot is provided on one side of the fixed plate; a first motor is fixedly connected to the connecting plate by bolts, and the output end of the first motor is fixedly connected to a card block by a rotating shaft, and the card block is clamped in the card slot.

[0010] As a preferred embodiment of the present invention, there are two exciters, which are respectively located on both sides of the mounting base; and the exciters are movably connected to the mounting base.

[0011] As a preferred embodiment of the present invention, the fitting includes: a wheel seat, a roller and an elastic layer; the wheel seat is fixedly connected to the end of the screw, the roller is rotatably connected to the wheel seat, the elastic layer is fixedly connected to the outer surface of the roller, and the elastic layer is fitted to the outer wall of the drain pipe of the refrigeration equipment.

[0012] As a preferred embodiment of the present invention, the elastic layer is configured as a rubber ring, and an outer surface of the rubber ring is provided with an anti-slip groove.

[0013] As a preferred embodiment of the present invention, the elastic layer is configured as a spring sheet, which is an arc-shaped spring sheet with one end connected to the outer edge of the roller and the other end suspended in the air.

[0014] As a preferred embodiment of the present invention, the screw is fixedly sleeved with a gear sleeve, and one side of the arc-shaped slide is fixedly connected to the arc-shaped rack, and the arc-shaped rack and the gear sleeve; when the mounting seat rotates, the gear sleeve rolls on the arc-shaped rack together with the screw. Since the gear sleeve is engaged with the arc-shaped rack, the rotation of the mounting seat drives the screw to rotate synchronously. The rotation of the screw causes the fitting to move axially through thread transmission, automatically fitting the outer wall of the pipe, and realizing the automatic locking function.

[0015] As a preferred embodiment of the present invention, a through hole is provided on the curved plate; a motor seat is connected to the outer side of the curved plate, a second motor is fixedly connected to the lower side of the motor seat, a driving wheel is fixedly connected to the output end of the second motor, the driving wheel passes through the through hole, and the driving wheel is attached to the outer wall of the drainage pipe of the refrigeration equipment.

[0016] A refrigeration equipment drain pipe blockage monitoring system includes the refrigeration equipment drain pipe blockage monitoring device, a signal processing module, a data analysis module, and a display alarm module;

[0017] During operation, after the refrigeration equipment drain pipe blockage monitoring device is installed and its position and angle are adjusted, the vibrator vibrates the outer wall of the drain pipe at a preset frequency and intensity, generating infrasound waves that propagate within the pipe. The infrasound receiver receives the original infrasound waves and the echo signals reflected from the blockage in real time, transmitting them as analog signals to the signal processing module.

[0018] The signal processing module amplifies, filters, and converts analog-to-digital signals to remove noise interference, then transmits the digital signal to the data analysis module. The blockage judgment model within the module uses machine learning or traditional algorithms to compare the intensity, frequency, and propagation time parameters of the original and echo signals, and combines them with thresholds to determine whether the drain pipe is blocked and the location and degree of blockage.

[0019] If a blockage is detected, the data analysis module transmits the information to the display alarm module, which displays the blockage status, location, and degree on the display screen and triggers an audible and visual alarm to alert the staff.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] Compared with the existing fixed refrigeration equipment drain pipe blockage monitoring device, the present invention has significant advantages. By providing a connecting plate with connecting holes and an arc-shaped slide and a matching arc-shaped plate, screw and fitting, the mounting base can be rotated and fixed at multiple angles, so that the exciter and the infrasound receiver can monitor the drain pipe at different angles. When the drain pipe is in a complex structure or the blockage position is hidden, the mounting base can flexibly adjust the angle to receive infrasound signals from different directions of the drain pipe in all directions, effectively solving the problem that the existing device is difficult to perform multi-directional and multi-angle measurements, and greatly improving the accuracy of blockage monitoring; at the same time, the multi-angle monitoring method expands the monitoring range and can cover all parts of the drain pipe, whether it is a straight pipe section or a curved part, and can perform accurate monitoring, meeting the diverse needs of refrigeration equipment drain pipe blockage monitoring in actual applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic structural diagram of a refrigeration equipment drain pipe blockage monitoring device provided in Example 1 of the present invention from a first perspective;

[0023] Figure 2 2 is a schematic structural diagram of the refrigeration equipment drain pipe blockage monitoring device provided in Example 1 of the present invention from a second perspective;

[0024] Figure 3 The embodiment 1 of the present invention provides Figure 2 Schematic diagram of the enlarged structure of part A;

[0025] Figure 4 3. This is a schematic structural diagram of the refrigeration equipment drain pipe blockage monitoring device provided in Example 1 of the present invention from a third perspective;

[0026] Figure 5 The embodiment 1 of the present invention provides Figure 4 Schematic diagram of the enlarged structure of part B;

[0027] Figure 6This is a side structural diagram of a refrigeration equipment drain pipe blockage monitoring device provided in Example 2 of the present invention;

[0028] Figure 7 The embodiment 2 of the present invention provides Figure 6 Schematic diagram of the enlarged structure of part C.

[0029] In the figure: 1. exciter; 2. infrasonic receiver; 3. mounting base; 4. connecting plate; 5. screw hole; 6. curved slide; 7. curved plate; 8. fixing plate; 9. screw; 10. fitting; 101. wheel seat; 102. roller; 103. elastic layer; 11. first motor; 12. gear sleeve; 13. curved rack; 14. through hole; 15. motor seat; 16. second motor; 17. driving wheel; 151. connecting rod; 152. fixing table; 153. turntable; 154. frame. DETAILED DESCRIPTION

[0030] In order to further understand the content, features and effects of the present invention, the following embodiments are given as examples and described in detail with reference to the accompanying drawings.

[0031] The structure of the present invention is described in detail below with reference to the accompanying drawings.

[0032] Example 1

[0033] like Figures 1 to 5 As shown, an embodiment of the present invention provides a refrigeration equipment drain pipe blockage monitoring device, including an exciter 1 and an infrasound receiver 2. The exciter 1 is used to excite the outer wall of the refrigeration equipment drain pipe to generate infrasound waves, and the infrasound receiver 2 is used to receive infrasound wave signals. The device also includes:

[0034] A mounting base 3, with connecting plates 4 fixedly connected at both ends of the mounting base 3, the connecting plates 4 having a connecting hole and an arc-shaped slide 6, the arc-shaped slide 6 and the connecting hole being concentrically arranged; the exciter 1 and the infrasound receiver 2 are mounted on the mounting base 3;

[0035] An arc-shaped plate 7, wherein both ends of the arc-shaped plate 7 are fixedly connected to a fixing plate 8, wherein the fixing plate 8 is rotatably connected to the connecting hole, a screw hole 5 is provided on the fixing plate 8, wherein a screw rod 9 is threadedly connected to the screw hole 5, and a fitting 10 is fixedly connected to the end of the screw rod 9, wherein the fitting 10 can press the outer wall of the drainage pipe of the refrigeration equipment; and the screw rod 9 is located in the arc-shaped slide 6.

[0036] During use, the inner wall of the curved plate 7 is aligned with the outer wall of the pipe. The screw 9 is then rotated to align the fitting 10 with the outer wall of the refrigeration equipment drain pipe, completing the fixation. The exciter 1 then vibrates the outer wall of the refrigeration equipment drain pipe, generating infrasound waves. The infrasound receiver 2 receives the infrasound signals and analyzes the blockage. Because the mounting base 3 can be rotated and fixed in the desired position, it can receive signals from multiple angles, improving accuracy and monitoring range.

[0037] When the refrigeration equipment drain pipe blockage monitoring device is used, the inner wall of the arc plate 7 is first fitted to the outer wall of the refrigeration equipment drain pipe, and then the connecting plate 4 and the fixed plate 8 are rotated and connected to preliminarily locate the relative position of the mounting seat 3 and the arc plate 7. Next, the screw 9 is rotated. Since the screw 9 is threadedly connected to the screw hole 5 on the fixed plate 8, the screw 9 will move axially, driving the fitting 10 at the end to press the outer wall of the refrigeration equipment drain pipe, thereby achieving a firm fixation of the device and the drain pipe. When it is necessary to adjust the angle of the exciter 1 and the infrasound receiver 2, since the connecting plate 4 and the fixed plate 8 are rotated and connected, the angle of the mounting seat 3 can be adjusted, or it can be locked in a preset position. After the fixation is completed, the exciter 1 starts to work, exciting the outer wall of the refrigeration equipment drain pipe to generate infrasound waves. The infrasound waves propagate in the drain pipe and will be reflected when encountering a blocked part to form an infrasound echo. The infrasound receiver 2 receives these infrasound signals and determines whether the drain pipe is blocked and the specific situation of the blockage by analyzing and processing the received signals.

[0038] In one embodiment, the two connection points of the connecting plate 4 and the fixing plate 8 are both rotatably connected by bolts. The two connection points of the connecting plate 4 and the fixing plate 8 are both rotatably connected by bolts. When the angle of the mounting base 3 needs to be adjusted, the operator loosens the bolts, and the mounting base 3 can now rotate freely around the connecting bolts. After manually adjusting the angle to the appropriate angle based on actual monitoring needs, the bolts are manually tightened to secure the mounting base 3 to the curved plate 7, thereby adjusting the angle of the exciter 1 and the infrasound receiver 2 to meet monitoring needs in different directions.

[0039] In another embodiment, one connection position of the connecting plate 4 and the fixed plate 8 is rotatably connected by bolts; the other connection position is connected by the following structure: a card slot is provided on one side of the fixed plate 8; the first motor 11 is fixedly connected to the connecting plate 4 by bolts, and the output end of the first motor 11 is fixedly connected to a card block via a rotating shaft, and the card block is clamped in the card slot.

[0040] One connection point between the connecting plate 4 and the fixing plate 8 is rotatably connected by bolts. The other connection point utilizes a first motor 11, a rotating shaft, a clamping block, and a slot. To adjust the angle of the mounting base 3, the control system sends a command to the first motor 11, which starts. Its output drives the clamping block via the rotating shaft, which in turn rotates the mounting base 3 to a predetermined angle. Upon reaching the desired position, the first motor 11 stops, achieving automatic adjustment and fixation of the mounting base 3's angle. This offers a higher degree of automation than manual adjustment, improving both precision and efficiency.

[0041] Specifically, the vibrator 1 comprises two vibrators, one located on either side of the mounting base 3, and is movably connected to the mounting base 3. This arrangement allows the vibrator 1 to vibrate the pipeline regardless of the angle of the mounting base 3, without hindering the rotation of the mounting base 3. For example, the vibrator 1 may be elastically connected to the mounting base 3 or mounted on the mounting base 3 via a lifting base.

[0042] Specifically, the fitting 10 includes a wheel seat 101, a roller 102, and an elastic layer 103. The wheel seat 101 is fixedly connected to the end of the screw 9, the roller 102 is rotatably connected to the wheel seat 101, and the elastic layer 103 is fixedly connected to the outer surface of the roller 102. The elastic layer 103 fits the outer wall of the refrigeration equipment drain pipe. With this arrangement, when the screw 9 is rotated, the elastic layer 103 fits the outer wall of the refrigeration equipment drain pipe. When the axis of the roller 102 and the axis of the refrigeration equipment drain pipe are neither perpendicular nor parallel, the connection between the curved plate 7 and the outer wall of the refrigeration equipment drain pipe is completed. When the screw 9 is rotated so that the axis of the roller 102 and the axis of the pipe are perpendicular, the roller 102 can rotate, thereby allowing the device to move along the pipe, thereby adjusting the position of the device. When the screw 9 is rotated to make the axis of the roller 102 parallel to the axis of the pipe, the roller 102 can rotate, thereby allowing the device to rotate along the pipe and adjust its position. After moving to the desired position, the screw 9 is rotated to make the axis of the roller 102 neither perpendicular nor parallel to the axis of the pipe, and the device can be locked again.

[0043] In one embodiment, the elastic layer 103 is configured as a rubber ring with anti-slip grooves on its outer surface. The elastic layer 103 is configured as a rubber ring with anti-slip grooves on its outer surface. The rubber ring has good elasticity and flexibility. When the screw 9 is rotated to make the rubber ring fit against the outer wall of the pipe, the rubber ring can tightly wrap around the pipe. The anti-slip grooves increase the friction between the rubber ring and the pipe surface, preventing the device from shifting due to factors such as vibration during the monitoring process. The elasticity of the rubber ring also buffers the forces between the device and the pipe to a certain extent, protecting the pipe surface from damage.

[0044] In another embodiment, the elastic layer 103 is configured as a spring sheet, which is an arc-shaped spring sheet, one end of which is connected to the outer edge of the roller 102, and the other end is suspended. The elastic layer 103 is configured as an arc-shaped spring sheet, one end of which is connected to the outer edge of the roller 102, and the other end is suspended. When the screw 9 is rotated to bring the fitting 10 close to the pipe, the arc-shaped spring sheet will undergo elastic deformation, and its suspended end will gradually fit the outer wall of the pipe. The elastic force of the spring sheet is used to press tightly against the pipe to fix the device. Compared with a rubber ring, the elastic deformation of the arc-shaped spring sheet is more directional and controllable, and can better adapt to pipes of different diameters and surface shapes. In addition, during the movement or rotation of the device, the elastic restoring force of the spring sheet helps to maintain stable contact between the device and the pipe.

[0045] Example 2

[0046] On the basis of Example 1, the following settings are also performed:

[0047] See Figure 1-Figure 7 , the screw 9 is fixedly sleeved with a gear sleeve 12, and one side of the arc-shaped slide 6 is fixedly connected with an arc-shaped rack 13, and the arc-shaped rack 13 and the gear sleeve 12. When the mounting base 3 rotates, the gear sleeve 12 rolls on the arc-shaped rack 13 together with the screw 9. Since the gear sleeve 12 is engaged with the arc-shaped rack 13, the rotation of the mounting base 3 will drive the screw 9 to rotate synchronously. The rotation of the screw 9 causes the fitting part 10 to move axially through threaded transmission, automatically fitting the outer wall of the pipe, and realizing the automatic locking function. At the same time, in this process, the rotation of the screw 9 will also automatically adjust the angle between the axis of the roller 102 and the axis of the pipe, without the need for additional manual operation, thereby improving the convenience and automation of the device adjustment.

[0048] Furthermore, a through hole 14 is provided on the arc-shaped plate 7; a motor base 15 is connected to the outer side of the arc-shaped plate 7, a second motor 16 is fixedly connected to the lower side of the motor base 15, and a driving wheel 17 is fixedly connected to the output end of the second motor 16, the driving wheel 17 passes through the through hole 14, and the driving wheel 17 is attached to the outer wall of the drainage pipe of the refrigeration equipment.

[0049] The mounting base 3 can be a fixed base, or a rotating base. When the rotating base is a rotating base, it can be set to a manual rotating base or an electric rotating base. By adjusting the angle of the mounting base 3, the angle of the driving wheel 17 can be adjusted, and the device can be driven to move along the pipeline axial direction, or to rotate.

[0050] Furthermore, the motor base 15 includes a connecting rod 151, one end of the connecting rod 151 is fixedly connected to the arc plate 7, and the other end of the connecting rod 151 is fixedly connected to a fixed platform 152, and the fixed platform 152 is provided with a turntable 153, and a frame 154 is fixedly connected to the turntable 153, and the second motor 16 is fixedly connected to the frame 154.

[0051] Example 3

[0052] A refrigeration equipment drain pipe blockage monitoring system includes the refrigeration equipment drain pipe blockage monitoring device, a signal processing module, a data analysis module, and a display alarm module;

[0053] During operation, after the refrigeration equipment drain pipe blockage monitoring device is installed and its position and angle are adjusted, the exciter 1 vibrates the outer wall of the drain pipe at a preset frequency and intensity, generating infrasound waves that propagate within the pipe. The infrasound receiver 2 receives the original infrasound waves and the echo signals reflected from the blockage in real time, transmitting them as analog signals to the signal processing module.

[0054] The signal processing module amplifies, filters, and converts analog-to-digital signals to remove noise interference, then transmits the digital signal to the data analysis module. The blockage judgment model within the module uses machine learning or traditional algorithms to compare the intensity, frequency, and propagation time parameters of the original and echo signals, and combines them with thresholds to determine whether the drain pipe is blocked and the location and degree of blockage.

[0055] If a blockage is detected, the data analysis module transmits the information to the display alarm module, which displays the blockage status, location, and degree on the display screen and triggers an audible and visual alarm to alert the staff.

[0056] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0057] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A refrigeration equipment drain pipe blockage monitoring device, comprising an exciter (1) and an infrasound receiver (2), wherein the exciter (1) is used to excite the outer wall of the refrigeration equipment drain pipe to generate infrasound waves, and the infrasound receiver (2) is used to receive infrasound signals, characterized in that: Also includes: A mounting seat (3), wherein both ends of the mounting seat (3) are fixedly connected to connecting plates (4), the connecting plates (4) are provided with connecting holes and arc-shaped slideways (6), and the arc-shaped slideways (6) and the connecting holes are arranged concentrically; the exciter (1) and the infrasound receiver (2) are mounted on the mounting seat (3); An arc-shaped plate (7), wherein both ends of the arc-shaped plate (7) are fixedly connected to fixed plates (8), wherein the fixed plates (8) are rotatably connected to the connecting holes, wherein a screw hole (5) is provided on the fixed plate (8), wherein a screw rod (9) is threadedly connected to the screw hole (5), wherein the end of the screw rod (9) is fixedly connected to a fitting (10), wherein the fitting (10) can press the outer wall of the drainage pipe of the refrigeration equipment; and wherein the screw rod (9) is located in the arc-shaped slideway (6).

2. A refrigeration equipment drain pipe blockage monitoring device according to claim 1, characterized in that: The two connection points of the connecting plate (4) and the fixing plate (8) are both rotatably connected via bolts.

3. The refrigeration equipment drain pipe blockage monitoring device according to claim 1, characterized in that: One connection position of the connecting plate (4) and the fixed plate (8) is rotatably connected via a bolt; the other connection position is connected via the following structure: a clamping slot is provided on one side of the fixed plate (8); a first motor (11) is fixedly connected to the connecting plate (4) via a bolt, and an output end of the first motor (11) is fixedly connected to a clamping block via a rotating shaft, and the clamping block is clamped in the clamping slot.

4. The refrigeration equipment drain pipe blockage monitoring device according to claim 1, characterized in that: The vibrator (1) has two components and is located on both sides of the mounting seat (3) respectively; and the vibrator (1) is movably connected to the mounting seat (3).

5. The refrigeration equipment drain pipe blockage monitoring device according to claim 1, characterized in that: The fitting (10) comprises: a wheel seat (101), a roller (102) and an elastic layer (103); the wheel seat (101) is fixedly connected to the end of the screw (9), the roller (102) is rotatably connected to the wheel seat (101), the elastic layer (103) is fixedly connected to the outer surface of the roller (102), and the elastic layer (103) is fitted to the outer wall of the drainage pipe of the refrigeration equipment.

6. A refrigeration equipment drain pipe blockage monitoring device according to claim 5, characterized in that: The elastic layer (103) is configured as a rubber ring, and an anti-slip groove is provided on the outer surface of the rubber ring.

7. The refrigeration equipment drain pipe blockage monitoring device according to claim 5, characterized in that: The elastic layer (103) is configured as a spring sheet, which is an arc-shaped spring sheet, one end of which is connected to the outer edge of the roller (102) and the other end of which is suspended in the air.

8. A refrigeration equipment drain pipe blockage monitoring device according to claim 6 or 7, characterized in that: The screw rod (9) is fixedly sleeved with a gear sleeve (12), and one side of the arc-shaped slideway (6) is fixedly connected with an arc-shaped rack (13), the arc-shaped rack (13) and the gear sleeve (12); When the mounting seat (3) rotates, the gear sleeve (12) rolls on the arc-shaped rack (13) together with the screw (9). Since the gear sleeve (12) is engaged with the arc-shaped rack (13), the rotation of the mounting seat (3) drives the screw (9) to rotate synchronously. The rotation of the screw (9) causes the fitting (10) to move axially through the thread transmission, automatically fitting the outer wall of the pipe, thereby realizing the automatic locking function.

9. The refrigeration equipment drain pipe blockage monitoring device according to claim 8, characterized in that: The arc-shaped plate (7) is provided with a through hole (14); The outer side of the arc-shaped plate (7) is connected to a motor base (15), the lower side of the motor base (15) is fixedly connected to a second motor (16), the output end of the second motor (16) is fixedly connected to a driving wheel (17), the driving wheel (17) passes through the through hole (14), and the driving wheel (17) is attached to the outer wall of the drainage pipe of the refrigeration equipment.

10. A refrigeration equipment drain pipe blockage monitoring system, characterized by: The device comprises the refrigeration equipment drain pipe blockage monitoring device according to any one of claims 1 to 9, as well as a signal processing module, a data analysis module, and a display alarm module; During operation, after the refrigeration equipment drain pipe blockage monitoring device is installed and its position and angle are adjusted, the exciter (1) excites the outer wall of the drain pipe at a preset frequency and intensity, and the generated infrasound waves propagate inside the pipe; the infrasound receiver (2) receives the original infrasound waves and the echo signals reflected from the blocked part in real time and transmits them to the signal processing module in the form of analog signals; The signal processing module amplifies, filters, and converts analog-to-digital signals to remove noise interference, then transmits the digital signal to the data analysis module. The blockage judgment model within the module uses machine learning or traditional algorithms to compare the intensity, frequency, and propagation time parameters of the original and echo signals, and combines them with thresholds to determine whether the drain pipe is blocked and the location and degree of blockage. If a blockage is detected, the data analysis module transmits the information to the display alarm module, which displays the blockage status, location, and degree on the display screen and triggers an audible and visual alarm to alert the staff.

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