Fault automatic alarm belt type flaker and probe protection mechanism

Abstract

The utility model discloses an automatic fault alarm belt type flaker and a probe protection mechanism, and relates to the technical field of chemical equipment, the automatic fault alarm belt type flaker comprises a conveyor belt, a spray head, a front driving wheel and a rear driving wheel, a front thermal imaging probe and a rear thermal imaging probe are installed above the conveyor belt, the spray head is located in front of the front thermal imaging probe, and the rear thermal imaging probe is located in front of the rear driving wheel. A curing area is arranged between the front thermal imaging probe and the rear thermal imaging probe, and the front thermal imaging probe and the rear thermal imaging probe are both electrically connected with the control system. By utilizing the intelligent thermal imaging principle and the matching of the front thermal imaging probe, the rear thermal imaging probe and the control system, the automatic fault early warning of the equipment is realized, the smooth production and the safe operation of the belt type flaker are guaranteed, the workload of workers is reduced, the working efficiency is improved, and the production cost is reduced. And the device can also adapt to high-temperature and toxic environments in chemical production, is not affected by the environment, generates serious measurement errors, and further avoids faults in equipment fault judgment.

Description

Technical Field

[0001] The utility model belongs to the technical field of chemical equipment, in particular to a belt-type flake machine with automatic fault alarm and a probe protection mechanism. Background Art

[0002] In carbonate production technology, the carbonate belt flake machine production workshop is an isolated production site. Personnel are prohibited from entering during production. Production monitoring is done manually through monitoring probes and workshop glass windows. When the carbonate solution is sprayed from the nozzle on the conveyor belt at the front end of the conveyor belt, a layer of white smoke will immediately appear above the carbonate liquid, which affects the visibility of the closed workshop, resulting in some accidents not being discovered by the staff in time, which in turn causes a bigger accident. Therefore, adding the automatic fault warning sensing function of the equipment itself will greatly guarantee the smooth progress of production and the safe operation of the equipment itself.

[0003] At the same time, the commonly used electronic preset measurement method is to determine the thickness of the material being measured, and then manually judge and analyze the equipment failure, such as the distribution of the material on the conveyor belt, whether the material thickness is evenly distributed, and whether the belt surface of the conveyor belt is flat or damaged; this method is not only inefficient, but also has certain measurement errors, because under the working condition of carbonate, the smoke layer generated will have a great interference with the measurement data of the electronic measuring equipment, so all non-contact electronic thickness gauges cannot effectively measure the effective thickness and the distribution of the material on the belt surface, which will cause damage to the equipment and batch scrapping of products.

[0004] At the same time, in the operating conditions of belt flakers in the chemical industry, high temperature and toxic and corrosive environments are very common. For example, carbonate production workshops involve toxic and corrosive materials, which can cause damage to electrical units. Utility Model Content

[0005] In view of the above problems, the purpose of the utility model is to provide a belt-type flaker with automatic fault alarm and a probe protection mechanism, which solves the problem that in the existing chemical industry under high temperature and toxic and corrosive environments, the belt-type flaker itself does not have a fault warning perception function, that is, it cannot automatically alarm for faults, causing a heavy burden on the staff, and because the faults cannot be discovered in time, larger accidents may occur, posing a threat to the smooth progress of production and the safe operation of the equipment itself, as well as the problem that these toxic and corrosive substances damage close-range electronic detection equipment.

[0006] The technical solution adopted by the utility model is as follows: a belt-type flaking machine with automatic fault alarm, comprising a conveyor belt, a nozzle located above the conveyor belt, and a front drive wheel and a rear drive wheel for driving the conveyor belt to transport materials, a front thermal imaging probe and a rear thermal imaging probe are installed above the conveyor belt, the nozzle is located in front of the front thermal imaging probe, and a curing area is arranged between the front thermal imaging probe and the rear thermal imaging probe, and the front thermal imaging probe and the rear thermal imaging probe are both electrically connected to the control system.

[0007] Furthermore, the conveyor belt comprises a transmission layer, a composite braided layer is arranged on the transmission layer, and a cladding layer is arranged on the composite braided layer.

[0008] The utility model also provides a probe protection mechanism, comprising a protection shell installed on the probe, one end of the protection shell is open, an air filling hole is opened on the protection shell, and the air filling hole is connected to a pneumatic delivery pipe.

[0009] Furthermore, the open end of the protective shell is movably connected to a sealing cover, and the sealing cover is movably connected to the protective shell through a hinge.

[0010] Furthermore, a driving assembly for driving the sealing cover to rotate is installed inside the protective shell. The driving assembly includes a cylinder, a cylinder control air pipe and a movable joint; the cylinder is installed inside the protective shell, a cylinder control air pipe penetrating the protective shell is installed on the cylinder, the extended end of the cylinder is movably connected to a movable joint, and the end of the movable joint is installed on the sealing cover.

[0011] Furthermore, the probe is provided with a probe signal line which passes through the protective shell.

[0012] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0013] The automatic fault alarm belt flaker realizes automatic early warning of equipment faults by utilizing the intelligent thermal imaging principle and the coordination of the front thermal imaging probe, the rear thermal imaging probe and the control system, thus providing great guarantee for the smooth production and the safe operation of the belt flaker itself, greatly reducing the workload of the staff and improving work efficiency. It can also adapt to the high temperature and toxic and corrosive environment in chemical production, and will not be affected by the environment to produce serious measurement errors, thereby avoiding misjudgment of equipment faults.

[0014] The probe protection mechanism realizes the safety protection of the probe. During production operation, air is inflated into the protective shell to form a positive air pressure inside the protective shell, so that high temperature and toxic and corrosive substances from the outside cannot enter the protective shell to damage the probe. When production stops, the sealing cover is pulled around the hinge by starting the cylinder, so that the sealing cover closes the protective shell and blocks the high temperature and toxic and corrosive substances from the outside. The structural design is simple, which is convenient for staff to operate, and further improves the safety of the utility model.

[0015] Through the coordination of the probe signal line, the cylinder control air pipe and the air pressure delivery pipe, the control of the inflation in the protective shell, the control of the cylinder extension and contraction, and the control of the probe signal acquisition are realized, which further reduces the operating burden of the staff and improves the work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 A schematic diagram of the structure provided for an embodiment of the utility model;

[0018] Figure 2 for Figure 1 Schematic diagram of thermal imaging of the front-end thermal imaging probe under normal working conditions;

[0019] Figure 3 for Figure 1 Schematic diagram of thermal imaging of equipment failure with the mid-front thermal imaging probe;

[0020] Figure 4 for Figure 1 Schematic diagram of thermal imaging of the center rear thermal imaging probe under normal working conditions;

[0021] Figure 5 for Figure 1 Schematic diagram of thermal imaging of equipment failure with a mid-rear thermal imaging probe;

[0022] Figure 6 for Figure 1 Schematic diagram of the structure of the conveyor belt;

[0023] Figure 7 for Figure 1 Schematic diagram of the probe protection mechanism of the mid-front thermal imaging probe.

[0024] Description of the drawings: 1. Front drive wheel; 2. Nozzle; 3. Front thermal imaging probe; 4. Conveyor belt; 5. Curing area; 6. Rear thermal imaging probe; 7. Rear drive wheel; 8. Protective shell; 9. Inflating hole; 10. Air pressure delivery pipe; 11. Probe signal line; 12. Cylinder control air pipe; 13. Cylinder; 14. Movable joint; 15. Hinge; 16. Sealing cover; 17. Cladding layer; 18. Composite woven layer; 19. Transmission layer; 20. Probe. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0026] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] Combine the following Figure 1-Figure 7 The utility model is described in detail.

[0028] Example

[0029] Depend on Figure 1-7 It can be known that a probe protection mechanism includes a protective shell 8 installed on the probe 20, one end of the protective shell 8 is open, and an inflation hole 9 is opened on the protective shell 8. The inflation hole 9 is connected to an air pressure delivery pipe 10. External gas is continuously delivered to the protective shell 8 through the inflation hole 9 on the protective shell 8 through the air pressure delivery pipe 10, so that positive air pressure is formed in the protective shell 8, thereby preventing external high temperature and toxic and corrosive substances from entering and damaging the probe.

[0030] Furthermore, the open end of the protective shell 8 is movably connected to a sealing cover 16, and the sealing cover 16 is movably connected to the protective shell 8 through a hinge 15. When production is stopped, the sealing cover 16 can be used to seal the protective shell 8 to prevent high temperature or toxic and corrosive substances remaining from the outside from entering.

[0031] Furthermore, a driving assembly for driving the sealing cover 16 to rotate is installed inside the protective shell 8. The driving assembly includes a cylinder 13, a cylinder control air pipe 12 and a movable joint 14; the cylinder 13 is installed inside the protective shell 8, and the cylinder control air pipe 12 that penetrates the protective shell 8 is installed on the cylinder 13, and the extended end of the cylinder 13 is movably connected to the movable joint 14, and the end of the movable joint 14 is installed on the sealing cover 16.

[0032] During production operation, positive air pressure is formed in the protective shell 8 by inflating air into the protective shell 8, and external high temperature and toxic and corrosive substances cannot enter the protective shell 8 to damage the probe 20; when production is stopped, the sealing cover 16 is pulled around the hinge 15 by starting the cylinder 13, so that the sealing cover 16 closes the protective shell 8 to prevent the external high temperature and toxic and corrosive substances from entering.

[0033] Regarding the selection of materials and models, the protective shell 8 is made of Teflon and can be tubular in shape. The cylinder 13 is a pen-type cylinder, and its model is not specifically limited here, as long as it meets actual use requirements. The probe 20 is a thermal imaging probe, and its model is also not specifically limited here, as long as it meets actual use requirements.

[0034] In addition, the probe 20 is equipped with a probe signal line 11 that penetrates the protective shell 8. Through the cooperation of the probe signal line 11, the cylinder control air pipe 12 and the air pressure delivery pipe 10, the control of the inflation in the protective shell 8, the control of the extension and contraction of the cylinder 13 and the control of the signal acquisition of the probe 20 are realized, which further reduces the operating burden of the staff and improves the work efficiency.

[0035] The utility model also provides a belt-type flaking machine with automatic fault alarm, comprising a conveyor belt 4, a nozzle 2 located above the conveyor belt 4, and a front driving wheel 1 and a rear driving wheel 7 for driving the conveyor belt 4 to transport materials, a front thermal imaging probe 3 and a rear thermal imaging probe 6 are installed above the conveyor belt 4, the nozzle 2 is located in front of the front thermal imaging probe 3, and a curing area 5 is arranged between the front thermal imaging probe 3 and the rear thermal imaging probe 6; and also includes a control system, and the front thermal imaging probe 3 and the rear thermal imaging probe 6 are both electrically connected to the control system. The images collected by the front thermal imaging probe 3 and the rear thermal imaging probe 6 are transmitted to the computer system in the control room outside the production workshop. The control system compares the images collected in real time by the thermal imaging probe 3 and the rear thermal imaging probe 6 with the normal working condition images pre-stored in the system and executes corresponding alarm instructions. The material is sprayed out from the nozzle 2 and falls onto the conveyor belt 4. The model of the nozzle 2 is not specifically limited here, and it only needs to meet the actual use requirements. The front drive wheel 1 and the rear drive wheel 7 are used to drive the conveyor belt 4 to transport the material. The model is not specifically limited here, and it only needs to meet the actual use requirements. The curing area 5 is a phosgene curing chamber, which crystallizes and solidifies the material on the conveyor belt 4. The chemical formula of phosgene is COCl2, also known as carbonyl chloride. The material conveyed by the utility model can be carbonate ester, but is not limited to carbonate ester, and can also be other materials required for chemical production.

[0036] The user uses the front thermal imaging probe 3 and the rear thermal imaging probe 6 to conduct an initial thermal imaging system experiment, respectively collecting the infrared radiation signals of the conveyor belt 4 before and after the material crystallization and curing and the infrared radiation signals of the material on the conveyor belt 4, and then transmits the collected signals to the control system for digital conversion, and then transmits them to the display to form a thermal image and store it in the system. In subsequent actual production, the control system performs thermal image analysis and comparison based on the images collected in real time by the front thermal imaging probe 3 and the rear thermal imaging probe 6 and the normal working condition images pre-stored in the control system, and executes corresponding alarm instructions. The fault conditions may be that the nozzle 2 is blocked, the conveyor belt 4 is tilted, the conveyor belt 4 is scratched, wrinkled or cracked, the phosgene curing chamber conditions in the curing area 5 change, and the temperature in the production workshop changes.

[0037] When the front thermal imaging probe 3 is working, taking carbonate material as an example, Figure 2 It can be seen that under normal working conditions, the carbonate material is sprayed from the nozzle 2 and falls on the conveyor belt 4, and has not yet been evenly spread. At this time, the thermal imaging image is as follows Figure 2 As shown, the middle temperature is about 85℃, the temperatures on both sides are about 79℃ and 68℃, and the conveyor belt temperature is about 45℃. If the equipment fails, the following will be formed: Figure 3 The thermal image shown; Figure 3It can be seen from the spots 1 and 2 in the figure that the carbonate material sprayed from the nozzle 2 is unevenly distributed on the conveyor belt 4. Spot 1 may be caused by the blockage of the nozzle 2, and the carbonate material is not sprayed from the nozzle 2. The temperature shows the temperature of the infrared radiation of the conveyor belt 4 itself. Spot 2 may be caused by the tilt of the conveyor belt 4, with a higher temperature on one side and a lower temperature on the other side. Figure 3 The spot 3 in the figure shows that the belt surface of the conveyor belt 4 has deep strip cracks and the belt surface is torn. Figure 3 The pattern 4 in the figure can be used to determine that there are flaky scratches or wrinkles on the belt surface of the conveyor belt 4.

[0038] When the rear thermal imaging probe 6 is working, taking carbonate material as an example, Figure 4 It can be seen that under normal working conditions, the temperature of the carbonate material in the middle of the conveyor belt 4 is about 45°C, and the temperature on both sides is about 42°C. If the equipment fails, the following will be formed: Figure 5 The thermal image shown; Figure 5 As shown in the spot 1 in the figure, the carbonate material is not crystallized and solidified on the conveyor belt 4 after passing through the curing zone 5. This may be because the amount of phosgene added to the phosgene curing chamber used in the curing zone 5 is insufficient, or the carbonate material at the front end is sprayed excessively from the nozzle 5. Figure 5 Spots 2 and 3 in the figure are normal image areas.

[0039] In addition, in order to solve the problem that in actual production, the conveyor belt 4 inevitably contacts with sharp objects, causing scratches on the Teflon layer of the conveyor belt 4, and long-term continuous work in a high temperature environment causes local thermal soft deformation, resulting in wrinkles on the belt surface of the conveyor belt 4, and as the conveyor belt 4 moves under the load, the wrinkles gradually deform and expand, and eventually form a larger groove, causing the material to gather in the groove, causing equipment shutdown or even conveyor belt 4 belt surface breakage.

[0040] Therefore, the following improvements are made to the conveyor belt 4 of the existing belt flaker, taking carbonate as an example:

[0041] In the first step, the existing metal chain belt transmission layer 19 as the transmission carrier of the belt flaker main transmission is not changed.

[0042] The second step is to replace the Teflon layer of the existing belt flaker with a composite woven layer 18 made of Teflon melt-impregnated Kevlar. Kevlar is a new type of aramid material with a strength five times that of steel. It is highly wear-resistant and durable, has good heat resistance and flame retardancy, is resistant to high temperatures of 500°C and has permanent static electricity resistance and has good softness. After the hot-melt Teflon solution is impregnated into the Kevlar fiber weaving, the life of the intermediate belt is increased by more than 15 times.

[0043] In the third step, the block carbonate product at the tail of the belt flaker naturally falls off by utilizing the different cooling shrinkage rates between the belt surface and the carbonate crystal surface. Therefore, the Teflon on the surface of the conveyor belt 4 is tightly fused with the composite woven layer 15 in the middle by utilizing the cladding technology to form a cladding layer 17. At the same time of fusion, the surface is subjected to a mirror finish treatment to facilitate the shedding of the carbonate crystal block.

[0044] In addition, since chemical production often involves high temperatures or toxic and corrosive environments, a probe protection mechanism provided by the utility model can be used to protect electronic devices such as the front thermal imaging probe 3 and the rear thermal imaging probe 6 to avoid damage.

[0045] Specifically, when using the automatic fault alarm belt flaker and the probe protection mechanism,

[0046] First, start the nozzle 2, the front drive wheel 1, the rear drive wheel 7, the curing area 5, the front thermal imaging probe 3 and the rear thermal imaging probe 6, so that the material flows out of the nozzle 2 and falls on the belt surface of the conveyor belt 4, and enters the curing area 5 under the transportation of the conveyor belt 4 for material crystallization and curing. At the same time, the front thermal imaging probe 3 and the rear thermal imaging probe 6 collect infrared radiation signals of the material on the conveyor belt 4, and then transmit the collected signals to the control system for digital conversion, and form a thermal image on the computer monitor. Finally, the system will perform a thermal image analysis on the thermal image with the normal operating condition thermal image obtained by the previous staff experiment, analyze the equipment failure, execute the corresponding alarm instructions, and whether the thickness of the material distributed on the conveyor belt 4 is consistent.

[0047] At the same time, since chemical production is often in a high temperature and toxic and corrosive environment, it is necessary to design protection for the front thermal imaging probe 3 and the rear thermal imaging probe 6. During production operation, the staff simultaneously starts the cylinder to control the air pipe 12 and the air pressure delivery pipe 10, so that the cylinder 13 works to open the sealing cover 16, and the air pressure delivery pipe 10 inflates the protective shell 8 through the inflation hole 9, so that positive air pressure is formed in the protective shell 8, and the external high temperature and toxic and corrosive substances cannot enter the protective shell 8 to damage the probe 20; when production stops, the sealing cover 16 is pulled around the hinge 15 by starting the cylinder 13, so that the sealing cover 16 closes the protective shell 8 and prevents the external high temperature and toxic and corrosive substances from entering.

[0048] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A belt flaker with automatic fault alarm, comprising a conveyor belt (4), a nozzle (2) located above the conveyor belt (4), and a front drive wheel (1) and a rear drive wheel (7) for driving the conveyor belt (4) to transport materials, characterized in that: A front thermal imaging probe (3) and a rear thermal imaging probe (6) are installed above the conveyor belt (4); the nozzle (2) is located in front of the front thermal imaging probe (3); and a curing area (5) is provided between the front thermal imaging probe (3) and the rear thermal imaging probe (6); the front thermal imaging probe (3) and the rear thermal imaging probe (6) are both electrically connected to the control system.

2. A probe protection mechanism, characterized in that: It comprises a protective shell (8) mounted on a probe (20), one end of the protective shell (8) being open, an air filling hole (9) being provided on the protective shell (8), and the air filling hole (9) being connected to an air pressure delivery pipe (10).

3. The probe protection mechanism according to claim 2, characterized in that: The open end of the protective shell (8) is movably connected to a sealing cover (16).

4. The probe protection mechanism according to claim 3, characterized in that: The sealing cover (16) is movably connected to the protective shell (8) via a hinge (15).

5. The probe protection mechanism according to claim 3, characterized in that: A driving assembly for driving the sealing cover (16) to rotate is installed inside the protective shell (8).

6. The probe protection mechanism according to claim 5, characterized in that: The driving assembly comprises a cylinder (13), a cylinder control air pipe (12) and a movable joint (14); The cylinder (13) is installed inside the protective shell (8), and a cylinder control air pipe (12) penetrating the protective shell (8) is installed on the cylinder (13). The extended end of the cylinder (13) is movably connected to a movable joint (14), and the end of the movable joint (14) is installed on the sealing cover (16).

7. The probe protection mechanism according to claim 2, characterized in that: The probe (20) is provided with a probe signal line (11) that passes through the protective shell (8).

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