CN-121985204-A - Pneumatic conveying visual monitoring system and method for particle materials with dustproof, vibration-proof and wear-proof functions

CN121985204ACN 121985204 ACN121985204 ACN 121985204ACN-121985204-A

Abstract

The invention relates to the technical field of pneumatic conveying visual monitoring, in particular to a particle material pneumatic conveying visual monitoring system and method with dustproof, vibration-proof and wear-proof functions, which comprises a conveying pipeline, wherein one end of the conveying pipeline is connected with a fan, the other end of the conveying pipeline is connected with a receiving bin, monitoring equipment and a feeding bin are arranged between the fan and the receiving bin, the feeding bin is arranged close to the fan, the monitoring equipment comprises a protective cover, a protective sleeve, an air pump, a camera and an image processing and early warning unit, the protective cover is fixedly connected to the outer wall of the conveying pipeline, a placing cavity is arranged inside the protective cover and is communicated with the inner side of the conveying pipeline through an observation window, and a continuous positive pressure air curtain is formed by arranging a conical annular air curtain at the front end of a lens of the camera.

Inventors

SU GUOYONG
WANG ZHIYONG
GUO YONGCUN
HU KUN
WANG YONGYUE
NI KE

Assignees

安徽理工大学

Dates

Publication Date: 20260505
Application Date: 20260210

Claims (9)

1. The pneumatic conveying visual monitoring system for the granular materials comprises a conveying pipeline, one end of the conveying pipeline is connected with a fan, the other end of the conveying pipeline is connected with a receiving bin, monitoring equipment and a feeding bin are arranged between the fan and the receiving bin, the feeding bin is arranged close to the fan, the visual monitoring system is characterized in that the monitoring equipment comprises a protective cover, an air pump, a camera and an image processing and early warning unit, the protective cover is fixedly connected to the outer wall of the conveying pipeline, a placing cavity is arranged in the protective cover, the placing cavity is communicated with the inner side of the conveying pipeline through an observation window, the observation window is obliquely communicated with the inner side of the conveying pipeline, the inner wall of the observation window is fixedly connected with the protective cover, an annular cavity is arranged in the protective cover in a communicating manner, an air outlet hole communicated with the annular cavity is formed in the end, close to the conveying pipeline, of the protective cover is provided with an air inlet hole communicated with the annular cavity, a first air passage communicated with the air pump is formed in the protective cover, the camera is arranged in the protective cover, and the head of the camera is aligned to the inner side of the protective cover.
2. The pneumatic conveying visual monitoring system for the granular materials with the dustproof, vibration-proof and wear-proof functions is characterized in that one end, close to the inner side of a conveying pipeline, of a protective sleeve is obliquely and downwards fixedly connected with a baffle, the air outlet penetrates through the baffle, the inner wall of a placing cavity is fixedly connected with an anti-shake device, the camera is connected to the anti-shake device, and the baffle is in a half-arc sleeve shape.
3. The pneumatic conveying visual monitoring system for the granular materials with the dustproof, vibration-proof and wear-proof functions is characterized in that a notch is formed in one face of a baffle plate facing the materials, the notch penetrates through one end of the baffle plate, far away from a protective sleeve, an arc-shaped driving groove is formed in one face, close to the protective sleeve, of the notch, an arc-shaped driving strip is connected in a sliding and sealing mode, the driving strip is connected to the bottom of the driving groove through a first tension spring, a driven groove is formed in the position, close to an annular cavity, of the inner wall of an air outlet hole, the driven groove is connected with a driven block in a sliding and sealing mode, the driven block can shield the air outlet hole, the bottom of the driven groove is communicated with the driving groove through a first liquid hole, and one end, far away from the first tension spring, of the driving strip is fixedly connected with a push plate outwards.
4. The pneumatic conveying visual monitoring system for the granular materials with the dustproof, vibration-proof and wear-proof functions, disclosed by claim 3, is characterized in that the cross section of the driven groove is larger than that of the air outlet hole, and the cross section of the driven groove covers the cross section of the air outlet hole.
5. The visual monitoring system for pneumatic conveying of the granular materials with the functions of dust prevention, vibration prevention and wear prevention according to claim 3 is characterized in that the push plate is in a vertical state when the driving bar is retracted to the limit state of the driving groove.
6. The pneumatic conveying visual monitoring system for the granular materials with the dustproof, vibration-proof and wear-proof functions is characterized in that shielding grooves are uniformly formed in the inner wall of a protective sleeve along the circumferential direction, a fan-shaped shielding plate is connected in a sliding and sealing mode in the shielding grooves, the inner sides of the protective sleeve can be shielded after the shielding plates are combined together, and the bottoms of the shielding grooves are communicated with a first liquid hole through a second liquid hole.
7. The pneumatic conveying visual monitoring system for the granular materials with the functions of dust prevention, vibration prevention and wear prevention according to claim 6, wherein the shielding plate is connected with the bottom of the shielding groove through elastic ropes.
8. The pneumatic conveying visual monitoring system for the granular materials with the dustproof, vibration-proof and wear-proof functions is characterized in that an adjusting groove is formed in the inner wall of the first liquid hole, an adjusting block is connected in a sliding and sealing mode in the adjusting groove, the adjusting block is connected with a bolt in an outward rotating mode, and the bolt penetrates through the baffle and is in threaded connection with the baffle.
9. The method for monitoring the pneumatic conveying and visual monitoring of the particle materials with the dustproof, vibration-proof and wear-proof functions is suitable for the system for monitoring the pneumatic conveying and visual monitoring of the particle materials with the dustproof, vibration-proof and wear-proof functions as claimed in any one of claims 1 to 8, and is characterized by comprising the following steps: S1, a blower transmits air force to a receiving bin through a conveying pipeline, materials in a feeding bin can enter the conveying pipeline, and the air force can drive the materials in the conveying pipeline to flow into the receiving bin through monitoring equipment; S2, the air pump can enable high-pressure air to enter the annular cavity along the first air channel and the air inlet hole, and air in the annular cavity can be discharged along the air outlet hole to form a conical annular air curtain; S3, a camera on the anti-shake device can penetrate through the inner side of the protective sleeve and collect images of materials in the conveying pipeline; And S4, transmitting the image data shot by the camera to an image processing and early warning unit and then analyzing the image data to realize timely early warning.

Description

Pneumatic conveying visual monitoring system and method for particle materials with dustproof, vibration-proof and wear-proof functions Technical Field The invention relates to the technical field of pneumatic conveying visual monitoring, in particular to a pneumatic conveying visual monitoring system and method for particle materials with dustproof, vibration-proof and wear-proof functions. Background The pneumatic conveying system is widely applied to the granular material conveying in the industries of chemical industry, food industry, tobacco industry, pharmacy industry and the like due to simple equipment and flexible layout, however, the inside of a conveying pipeline is in a closed 'black box' environment, and three core problems of dust diffusion, abrasion caused by high-speed impact of materials and strong vibration caused by equipment operation exist. For the condition of the pipeline monitoring system, the prior art also has a related processing method, such as a scheme shown in a patent CN105136803B, which discloses an on-line detection device for the concentration and granularity of solid-phase substances in pneumatic conveying, which is used for shooting and amplifying flowing particle images in real time through a transparent area of a measuring pipeline, an optical amplifying assembly, a high-speed camera device and an automatic focusing system and calculating the particle size and concentration by combining an image analysis system, and further, for example, the patent CN220326803U discloses a visualized stalk pneumatic conveying device which is used for monitoring the flowing state of tobacco shreds in real time through arranging a transparent pipe section and a matched camera in a conveying pipeline. In the prior art and the two patent schemes, a transparent observation window is arranged on a pipeline and is combined with a camera for monitoring, but the defects that a common sealing structure is difficult to completely prevent adhesion and deposition of fine dust on the surface of a lens to cause quick blurring of a visual field, the wear-resistant aspect is that particle materials moving at high speed continuously impact a transparent area of the pipeline to abrade the transparent window to cause blurring of the visual field, and the lens is worn when the lens is directly stretched into the inner side of the pipeline, and in the pneumatic conveying process, mechanical vibration of the pipeline and equipment is transmitted to the camera to cause blurring and shaking of a captured image to seriously influence the accuracy of subsequent visual analysis are still present. Disclosure of Invention In order to make up the defects of the prior art, the invention provides a pneumatic conveying visual monitoring system and a method for particle materials with dustproof, vibration-proof and wear-proof functions, the invention is characterized in that a conical annular air curtain is arranged at the front end of a lens of a camera, the continuous positive pressure air curtain is formed, so that pollution and abrasion of high-concentration dust to the lens are effectively isolated, flowing air flow has heat dissipation and self-cleaning functions, and service life and reliability of the vision system under severe working conditions are remarkably improved. The technical scheme includes that the particle material pneumatic conveying visual monitoring system with the dustproof, vibration-proof and wear-proof functions comprises a conveying pipeline, one end of the conveying pipeline is connected with a fan, the other end of the conveying pipeline is connected with a receiving bin, monitoring equipment and a feeding bin are arranged between the fan and the receiving bin, the feeding bin is arranged close to the fan, the monitoring equipment comprises a protection cover, a protection sleeve, an air pump, a camera and an image processing and early warning unit, the protection cover is fixedly connected to the outer wall of the conveying pipeline, a placing cavity is arranged in the protection cover, the placing cavity is communicated with the inner side of the conveying pipeline through an observation window, the observation window is obliquely communicated with the inner side of the conveying pipeline, the inner wall of the observation window is fixedly connected with a protection sleeve, an annular cavity is arranged in the protection sleeve, an air outlet hole communicated with the annular cavity is arranged at one end of the protection sleeve, which is close to the conveying pipeline, a first air inlet hole communicated with the annular cavity is arranged in the protection cover, the first air inlet hole is communicated with the first air channel, the air pump is communicated with the air pump, and the camera is arranged in the protection cover, and the camera is aligned with the head of the protection sleeve. Preferably, one end of the protecting sleeve, which is close to the inner side of the conv