Monitoring device and monitoring system for blockage of drainage pipe of refrigeration equipment

Abstract

The invention discloses a refrigeration equipment drain pipe blockage monitoring device and monitoring system, and belongs to the field of sound wave detection, the refrigeration equipment drain pipe blockage monitoring device comprises a vibration exciter and an infrasonic wave receiver, the vibration exciter is used for exciting the outer wall of a refrigeration equipment drain pipe and generating infrasonic waves, and the infrasonic wave receiver is used for receiving infrasonic wave signals; the connecting plate is provided with a connecting hole and an arc-shaped slide way which are concentrically arranged; the vibration exciter and the infrasonic wave receiver are mounted on the mounting seat; the two ends of the arc-shaped plate are fixedly connected with fixing plates, the fixing plates are rotationally connected to the connecting holes, screw holes are formed in the fixing plates, screw rods are connected into the screw holes through threads, the end portions of the screw rods are fixedly connected with attaching pieces, and the attaching pieces can tightly press the outer wall of the drainage pipe of the refrigeration equipment; and the screw rod is positioned in the arc-shaped slide way. The device has the advantage of multi-angle measurement.

Description

Technical Field

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

[0002] In the daily operation and maintenance of refrigeration devices, blockage of the drain pipe is a common fault. Timely and accurate monitoring of the blockage situation is crucial for ensuring the normal operation of refrigeration devices. Currently, most of the commonly used monitoring devices for blockage of the drain pipe of refrigeration devices on the market adopt a fixed structure. An exciter is used to excite the drain pipe to generate infrasonic waves, and an infrasonic wave receiver is used to receive the infrasonic wave echo to judge the blockage situation.

[0003] However, this fixed monitoring device has obvious defects. The positions of its exciter and infrasonic wave receiver are fixed, making it difficult to achieve multi-directional and multi-angle measurements. Due to the complex structure of the drain pipe, the blockage position may be at different positions and angles in the pipe. The fixed monitoring device cannot comprehensively receive infrasonic wave signals from different positions, resulting in errors in the judgment of the blockage situation, low monitoring accuracy, narrow range, and inability to meet the precise requirements for monitoring the blockage of the drain pipe of refrigeration devices in practical applications. There is an urgent need for a blockage monitoring device that can perform multi-angle measurements. Summary of the Invention

[0004] Aiming at the problems existing in the prior art, the present invention provides a monitoring device and a monitoring system for blockage of a drain pipe of a refrigeration device, which have the advantage of being able to perform multi-angle measurements and solve the problems of the prior art.

[0005] The present invention is implemented as follows. A monitoring device for blockage of a drain pipe of a refrigeration device includes an exciter and an infrasonic wave receiver. The exciter is used to excite the outer wall of the drain pipe of the refrigeration device to generate infrasonic waves, and the infrasonic wave receiver is used to receive infrasonic wave signals. It further includes: A mounting seat, both ends of the mounting seat are fixedly connected with connecting plates. The connecting plates are provided with connecting holes and arc-shaped slides, and the arc-shaped slides and the connecting holes are concentrically arranged. The exciter and the infrasonic wave receiver are installed on the mounting seat; An arc-shaped plate, both ends of the arc-shaped plate are fixedly connected with fixing plates. The fixing plates are rotatably connected to the connecting holes. The fixing plates are provided with screw holes, and screws are connected to the screw holes by threads. The end of the screw is fixedly connected with a fitting, and the fitting can press against the outer wall of the drain pipe of the refrigeration device; and the screw is located in the arc-shaped slide.

[0006] Preferably, both connection positions of the connecting plate and the fixing plate are rotatably connected by bolts.

[0007] Preferably, one connection position of the connecting plate and the fixing plate is rotatably connected by a bolt; the other connection position is connected by the following structure: a clamping groove is provided on one side of the fixing plate; a first motor is fixedly connected to the connecting plate by a bolt, and a clamping block is fixedly connected to the output end of the first motor by a rotating shaft, and the clamping block is clamped in the clamping groove.

[0008] Preferably, there are two exciters, which are respectively located on both sides of the mounting seat; and the exciters are movably connected to the mounting seat.

[0009] Preferably, the fitting member includes: a wheel seat, a roller and an elastic layer; the wheel seat is fixedly connected to the end of the screw rod, the roller is rotatably connected in the wheel seat, the elastic layer is fixedly connected to the outer surface of the roller, and the elastic layer fits on the outer wall of the drain pipe of the refrigeration equipment.

[0010] Preferably, the elastic member is set as a rubber ring, and anti-slip grooves are provided on the outer surface of the rubber ring.

[0011] Preferably, the elastic member is set as a spring piece, the spring piece is an arc-shaped spring piece, and one end is connected to the outer edge of the roller and the other end is suspended.

[0012] Preferably, a gear sleeve is fixedly sleeved on the screw rod, an arc-shaped rack is fixedly connected to one side of the arc-shaped slideway, 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 rod. Since the gear sleeve meshes with the arc-shaped rack, the rotation of the mounting seat drives the screw rod to rotate synchronously. The rotation of the screw rod drives the fitting member to move axially through screw transmission, automatically fitting the outer wall of the pipeline and realizing the automatic locking function.

[0013] Preferably, through holes are provided in the arc-shaped plate; a motor seat is connected to the outside of the arc-shaped 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 penetrates through the through hole, and the driving wheel fits on the outer wall of the drain pipe of the refrigeration equipment.

[0014] A refrigeration equipment drain pipe blockage monitoring system includes the refrigeration equipment drain pipe blockage monitoring device described above, as well as a signal processing module, a data analysis module, and a display and alarm module; During operation, after the refrigeration equipment drain pipe blockage monitoring device is installed and the position and angle are adjusted, the exciter vibrates the outer wall of the drain pipe according to a preset frequency and intensity, and the generated infrasonic wave propagates in the pipe. The infrasonic wave receiver continuously receives the original infrasonic wave and the echo signal reflected by the blockage part, and transmits it to the signal processing module in an analog signal; After the signal processing module amplifies, filters, and performs analog-to-digital conversion on the signal, removes noise interference, and then transmits the digital signal to the data analysis module. The blockage judgment model in the module, based on machine learning or traditional algorithms, compares the parameters of the intensity, frequency, and propagation time of the original and echo signals, and combines with the threshold to judge whether the drain pipe is blocked and the location and degree of the blockage. If it is judged that there is a blockage, the data analysis module will transmit the information to the display and alarm module. This module displays the blockage status, location, and degree on the display screen, and at the same time triggers an audible and visual alarm to remind the staff.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: Compared with the existing fixed refrigeration equipment drain pipe blockage monitoring device, the present invention has significant advantages. By setting a connecting plate with connecting holes and an arc-shaped slideway, and an arc-shaped plate, a screw, and a fitting piece cooperating therewith, the rotatability and multi-angle fixation of the mounting seat are realized, so that the exciter and the infrasonic wave receiver can monitor the drain pipe at different angles. When the drain pipe has a complex structure or the blockage position is hidden, the mounting seat can flexibly adjust the angle to receive infrasonic wave signals from different directions of the drain pipe in all directions, effectively solving the problem that it is difficult for the existing device 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, can cover all parts of the drain pipe, and can perform accurate monitoring on both the straight pipe section and the bent part, meeting the diverse needs of the actual application for the blockage monitoring of the refrigeration equipment drain pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of the first perspective of the refrigeration equipment drain pipe blockage monitoring device provided in Embodiment 1 of the present invention; Figure 2 is a schematic structural diagram of the second perspective of the refrigeration equipment drain pipe blockage monitoring device provided in Embodiment 1 of the present invention; Figure 3 is provided in Embodiment 1 of the present invention Figure 2 The enlarged structural diagram of part A therein; Figure 4 is a schematic structural diagram of the third perspective of the refrigeration equipment drain pipe blockage monitoring device provided in Embodiment 1 of the present invention; Figure 5 is provided in Embodiment 1 of the present invention Figure 4 The enlarged structural diagram of part B therein; Figure 6 is a schematic side view structural diagram of the refrigeration equipment drain pipe blockage monitoring device provided in Embodiment 2 of the present invention; Figure 7 is provided in Embodiment 2 of the present invention Figure 6 The enlarged structural diagram of part C therein.

[0017] In the figure: 1. Vibrator; 2. Infrasonic wave receiver; 3. Mounting seat; 4. Connecting plate; 5. Screw hole; 6. Arc-shaped slideway; 7. Arc-shaped plate; 8. Fixed plate; 9. Screw; 10. Fitting piece; 101. Wheel seat; 102. Roller; 103. Elastic layer; 11. First motor; 12. Gear sleeve; 13. Arc-shaped rack; 14. Through hole; 15. Motor seat; 16. Second motor; 17. Driving wheel; 151. Connecting rod; 152. Fixed platform; 153. Turntable; 154. Frame. Specific embodiments

[0018] To further understand the content, features and effects of the present invention, the following embodiments are exemplified and described in detail with reference to the accompanying drawings.

[0019] The structure of the present invention will be described in detail below with reference to the accompanying drawings. Embodiment 1

[0020] As Figures 1 to 5 shown, a monitoring device for blockage of a drain pipe of a refrigeration device provided by an embodiment of the present invention includes a vibrator 1 and an infrasonic wave receiver 2. The vibrator 1 is used to vibrate the outer wall of the drain pipe of the refrigeration device to generate infrasonic waves, and the infrasonic wave receiver 2 is used to receive infrasonic wave signals. It further includes: A mounting seat 3, both ends of the mounting seat 3 are fixedly connected with a connecting plate 4. The connecting plate 4 has a connecting hole and an arc-shaped slideway 6, and the arc-shaped slideway 6 and the connecting hole are concentrically arranged; the vibrator 1 and the infrasonic wave receiver 2 are installed on the mounting seat 3; An arc-shaped plate 7, both ends of the arc-shaped plate 7 are fixedly connected with a fixed plate 8. The fixed plate 8 is rotatably connected to the connecting hole. The fixed plate 8 is provided with a screw hole 5, and a screw 9 is connected to the screw hole 5 by a thread. The end of the screw 9 is fixedly connected with a fitting piece 10, and the fitting piece 10 can press against the outer wall of the drain pipe of the refrigeration device; and the screw 9 is located in the arc-shaped slideway 6.

[0021] During use, the inner wall of the arc-shaped plate 7 is attached to the outer wall of the pipe, and then the screw 9 is rotated so that the fitting piece 10 fits against the outer wall of the drain pipe of the refrigeration device, and the fixation can be completed. Then, the vibrator 1 vibrates the outer wall of the drain pipe of the refrigeration device to generate infrasonic waves, and the infrasonic wave receiver 2 receives the infrasonic wave signals, thereby analyzing the blockage. Since the mounting seat 3 can rotate or be fixed at the required position, signals can be received from multiple angles, improving the accuracy rate and the monitoring range.

[0022] When the drainage pipe blockage monitoring device of the refrigeration equipment is in use, first, the inner wall of the arc-shaped plate 7 is attached to the outer wall of the drainage pipe of the refrigeration equipment. Then, the connecting plate 4 and the fixing plate 8 are rotatably connected to preliminarily locate the relative positions of the mounting seat 3 and the arc-shaped plate 7. Next, rotate the screw rod 9. Since the screw rod 9 is threadedly connected to the screw hole 5 on the fixing plate 8, the screw rod 9 will move axially, driving the fitting 10 at the end to press against the outer wall of the drainage pipe of the refrigeration equipment, realizing the firm fixation of the device to the drainage pipe. When it is necessary to adjust the angles of the vibrator 1 and the infrasonic wave receiver 2, since the connecting plate 4 and the fixing plate 8 are rotatably connected, the angle of the mounting seat 3 can be adjusted and can also be locked in a preset position. After the fixation is completed, the vibrator 1 starts to work, exciting the outer wall of the drainage pipe of the refrigeration equipment to generate infrasonic waves. The infrasonic waves propagate in the drainage pipe and will generate reflections to form infrasonic wave echoes when encountering the blocked part. The infrasonic wave receiver 2 receives these infrasonic wave signals, and by analyzing and processing the received signals, it is judged whether the drainage pipe is blocked and the specific situation of the blockage.

[0023] In one embodiment, the two connection positions of the connecting plate 4 and the fixing plate 8 are rotatably connected by bolts. The two connection positions of the connecting plate 4 and the fixing plate 8 are rotatably connected by bolts. When it is necessary to adjust the angle of the mounting seat 3, the operator loosens the bolts. At this time, the mounting seat 3 can freely rotate around the connecting bolts. After manually adjusting to a suitable angle according to the actual monitoring requirements, the bolts are manually tightened again to fix the mounting seat 3 to the arc-shaped plate 7, thereby realizing the adjustment of the angles of the vibrator 1 and the infrasonic wave receiver 2 to meet the monitoring requirements in different directions.

[0024] In another embodiment, one connection position of the connecting plate 4 and the fixing plate 8 is rotatably connected by a bolt; the other connection position is connected by the following structure: a card slot is provided on one side of the fixing plate 8; a first motor 11 is fixedly connected to the connecting plate 4 by a bolt, and a clamping block is fixedly connected to the output end of the first motor 11 through a rotating shaft, and the clamping block is clamped in the card slot.

[0025] One connection position of the connecting plate 4 and the fixing plate 8 is rotatably connected by a bolt, and the other connection position adopts a structure in which the first motor 11, the rotating shaft, the clamping block and the card slot cooperate. When it is necessary to adjust the angle of the mounting seat 3, the control system sends an instruction to the first motor 11. The first motor 11 starts, and its output end drives the clamping block to rotate through the rotating shaft. The clamping block drives the mounting seat 3 to rotate to a preset angle. After reaching the specified position, the first motor 11 stops working, realizing the automatic adjustment and fixation of the angle of the mounting seat 3. Compared with manual adjustment, the degree of automation is higher, and the adjustment accuracy and efficiency are also improved.

[0026] Specifically, there are two exciters 1, which are respectively located on both sides of the mounting seat 3; and the exciters 1 are movably connected to the mounting seat 3. With this setting, no matter what angle the mounting seat 3 is in, the exciter 1 can vibrate the pipeline and does not hinder the rotation of the mounting seat 3. For example, the exciter 1 is elastically connected to the mounting seat 3 or is mounted on the mounting seat 3 through a lifting seat.

[0027] Specifically, the fitting member 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 rod 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 fits against the outer wall of the drain pipe of the refrigeration equipment. With this setting, when the screw rod 9 is rotated, the elastic layer 103 can be made to fit against the outer wall of the drain pipe of the refrigeration equipment, and when the axis of the roller 102 is neither perpendicular nor parallel to the axis of the drain pipe of the refrigeration equipment, the connection between the arc-shaped plate 7 and the outer wall of the drain pipe of the refrigeration equipment is completed. When the screw rod 9 is rotated to make the axis of the roller 102 perpendicular to the axis of the pipeline, the roller 102 can rotate, so that the device can move along the pipeline, and thus the position of the device can be adjusted. When the screw rod 9 is rotated to make the axis of the roller 102 parallel to the axis of the pipeline, the roller 102 can rotate, so that the device can rotate along the pipeline, and the position of the device can also be adjusted. And after moving to the required position, the screw rod 9 is rotated to make the axis of the roller 102 neither perpendicular nor parallel to the axis of the pipeline, and then it can be locked again.

[0028] In one embodiment, the elastic member is provided as a rubber ring, and the outer surface of the rubber ring is provided with anti-slip grooves. The elastic member is provided as a rubber ring and the outer surface is provided with anti-slip grooves. The rubber ring has good elasticity and flexibility. When the screw rod 9 is rotated to make the rubber ring fit against the outer wall of the pipeline, the rubber ring can tightly wrap the pipeline. The anti-slip grooves increase the friction between the rubber ring and the surface of the pipeline, preventing the device from shifting due to factors such as vibration during the monitoring process. At the same time, the elasticity of the rubber ring can also buffer the force between the device and the pipeline to a certain extent, protecting the surface of the pipeline from damage.

[0029] In another embodiment, the elastic member is arranged as a spring piece, the spring piece is an arc-shaped spring piece, one end of which is connected to the outer edge of the roller 102 and the other end is suspended. The elastic member is arranged as an arc-shaped spring piece, 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 move the fitting 10 close to the pipeline, the arc-shaped spring piece will undergo elastic deformation, and its suspended end gradually fits the outer wall of the pipeline. The elastic force of the spring piece is used to tightly press on the pipeline to realize the fixation of the device. Compared with the rubber ring, the elastic deformation of the arc-shaped spring piece has more directionality and controllability, can better adapt to pipelines with different diameters and surface shapes, and during the movement or rotation of the device, the elastic restoring force of the spring piece helps to maintain the stable contact between the device and the pipeline. Embodiment 2

[0030] On the basis of Embodiment 1, the following settings are further made: Refer to Figures 1 - 7 , a gear sleeve 12 is fixedly sleeved on the screw 9, and an arc-shaped rack 13 is fixedly connected to one side of the arc-shaped slideway 6. 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 meshes with the arc-shaped rack 13, the rotation of the mounting seat 3 will drive the screw 9 to rotate synchronously. The rotation of the screw 9 makes the fitting 10 move axially through screw transmission to automatically fit the outer wall of the pipeline, realizing the automatic locking function. At the same time, during this process, the rotation of the screw 9 will also automatically adjust the included angle between the axis of the roller 102 and the axis of the pipeline, without additional manual operation, improving the convenience and automation degree of device adjustment.

[0031] Furthermore, a through hole 14 is formed in the arc-shaped plate 7; a motor seat 15 is connected to the outside of the arc-shaped plate 7, a second motor 16 is fixedly connected to the lower side of the motor seat 15, an output end of the second motor 16 is fixedly connected to a driving wheel 17, the driving wheel 17 penetrates through the through hole 14, and the driving wheel 17 fits on the outer wall of the drain pipe of the refrigeration equipment.

[0032] The mounting seat 3 can be a fixed seat or a rotating seat. When it is a rotating seat, it can be set as a manually rotating seat or an electrically rotating seat. By adjusting the angle of the mounting seat 3, the angle of the driving wheel 17 can be adjusted to drive the device to move axially along the pipeline or rotate.

[0033] Furthermore, the motor seat 15 includes a connecting rod 151, one end of the connecting rod 151 is fixedly connected to the arc-shaped plate 7, the other end of the connecting rod 151 is fixedly connected to a fixed platform 152, a rotating platform 153 is provided on the fixed platform 152, a frame 154 is fixedly connected to the rotating platform 153, and the second motor 16 is fixedly connected to the frame 154. Embodiment 3

[0034] A refrigeration equipment drain pipe blockage monitoring system, including the refrigeration equipment drain pipe blockage monitoring device, as well as a signal processing module, a data analysis module, and a display and alarm module; During operation, after the refrigeration equipment drain pipe blockage monitoring device is installed and the position and angle are adjusted, the exciter 1 vibrates the outer wall of the drain pipe according to a preset frequency and intensity, and the generated infrasonic wave propagates in the pipe. The infrasonic wave receiver 2 receives the original infrasonic wave and the echo signal reflected by the blockage part in real time, and transmits it to the signal processing module as an analog signal; The signal processing module amplifies, filters, and performs analog-to-digital conversion on the signal. After removing noise interference, it transmits the digital signal to the data analysis module. The blockage judgment model in the module, based on machine learning or traditional algorithms, compares the parameters of the intensity, frequency, and propagation time of the original and echo signals, and combines the threshold to judge whether the drain pipe is blocked and the blockage position and degree; If it is judged that there is a blockage, the data analysis module transmits the information to the display and alarm module. This module displays the blockage status, position, and degree on the display screen, and at the same time triggers an audible and visual alarm to remind the staff.

[0035] It should be noted that in this article, relational terms such as first and second are only used 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 "including", "comprising" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0036] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present 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 fixing plates (8), wherein the fixing plates (8) are rotatably connected to the connecting holes, wherein a screw hole (5) is provided on the fixing 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 against 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 connection plate (4) and the fixing plate (8) are both rotationally connected via bolts.

3. A refrigeration equipment drain pipe blockage monitoring device according to claim 1, characterized in that: One connection position of the connecting plate (4) and the fixing 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 fixing plate (8); a first motor (11) is fixedly connected to the connecting plate (4) via a bolt, 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. A refrigeration equipment drain pipe blockage monitoring device according to claim 1, characterized in that: The vibrator (1) has two components and is located on two sides of the mounting seat (3) respectively; and the vibrator (1) is movably connected to the mounting seat (3).

5. A refrigeration equipment drain pipe blockage monitoring device as claimed in 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 rod (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) fits the outer wall of the drainage pipe of the refrigeration equipment.

6. A refrigeration equipment drain pipe blockage monitoring device as claimed in claim 5, characterized in that: The elastic member is configured as a rubber ring, and an anti-slip groove is disposed on the outer surface of the rubber ring.

7. A refrigeration equipment drain pipe blockage monitoring device as claimed in claim 5, characterized in that: The elastic member 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), one side of the arc-shaped slideway (6) is fixedly connected with an arc-shaped rack (13), and 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 rod (9). Since the gear sleeve (12) is meshed with the arc-shaped rack rod (13), the rotation of the mounting seat (3) drives the screw rod (9) to rotate synchronously. The rotation of the screw rod (9) causes the fitting member (10) to move axially through the thread transmission, automatically fitting to the outer wall of the pipe, thereby realizing an automatic locking function.

9. A refrigeration equipment drain pipe blockage monitoring device as claimed in 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 seat (15), the lower side of the motor seat (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 in that: It 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; When working, after the refrigeration equipment drain pipe blockage monitoring device is installed and the 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 in 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, converts analog-to-digital signals, removes noise interference, and transmits the digital signal to the data analysis module. The blockage judgment model in the module compares the original and echo signal strength, frequency, and propagation time parameters based on machine learning or traditional algorithms, and combines the threshold to determine whether the drain pipe is blocked and the location and degree of blockage. If a blockage is detected, the data analysis module will transmit the information to the display alarm module, which will display the blockage status, location, and degree on the display screen, and trigger an audible and visual alarm to alert the staff.

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