A mobile scraper conveyor

Abstract

The present invention belongs to the technical field of scraper conveying equipment, and in particular relates to a mobile scraper conveyor, which includes a scraper chain assembly and a conveyor main body. The bottom end of the conveyor main body is fixedly connected with a bracket, universal wheels are installed at the four bottom ends of the bracket, and a PLC controller is fixedly connected to the outer wall of the bracket. The present invention can effectively improve the stability of the mobile scraper conveyor during operation, avoid material conveying errors, and thus improve the reliability of material conveying. Secondly, the conveyor has the function of detecting the humidity of materials, which can accurately identify and clean the wet materials on the scraper chain assembly, not only accelerating the material conveying rate, but also reducing the wear of the scraper chain assembly, further improving the service life and reliability of the conveyor. Moreover, in the process of dry material conveying, the conveyor also has the functions of collecting dust materials and removing static electricity, effectively improving the conveying efficiency and safety factor, making the material conveying of the conveyor more efficient and reliable.

Description

Technical Field

[0001] The present invention belongs to the technical field of scraper conveyor equipment, and in particular relates to a mobile scraper conveyor. Background Art

[0002] A scraper conveyor is a commonly used conveying machine, which mainly consists of components such as a head, a tail, a middle trough, and a scraper chain. During operation, it relies on the cyclic operation of the scraper chain to steadily push the materials placed in the middle trough, such as coal, ore, sand, etc., along a predetermined route. With a compact structural design, it has strong adaptability and can efficiently operate in complex and narrow sites such as underground coal mines and mine roadways. It has a large conveying capacity and is continuous. Because its conveying line can be flexibly arranged, either in a straight line or a broken line, it is widely used in various scenarios of bulk material conveying. For example, the patent of the scraper conveyor is disclosed in the authorized announcement number CN103318604B.

[0003] At the present stage, a series of problems that need to be solved urgently have emerged in the material conveying link of the scraper conveyor;

[0004] First, when dealing with materials with high humidity, once the humidity is too high, the materials will show extremely strong adhesion characteristics and tightly adhere to the surface of the scraper chain. The direct consequence is that it slows down the conveying rhythm of the materials, reduces the conveying efficiency. At the same time, the extra adhered materials increase the load of the scraper chain, causing its structural weight to rise, and the running resistance also increases sharply. Under the continuous high-pressure resistance, the scraper chain wears more severely, and the sprocket teeth are also affected. Frequent high-intensity friction causes the teeth to wear rapidly. This continuous excessive resistance may cause the meshing between the scraper chain and the sprocket to become loose and abnormal, and even cause the accident of the scraper chain derailing, affecting the service life and reliability of the scraper conveyor, as well as the efficiency of the scraper conveyor in conveying materials;

[0005] Second, when conveying dry materials with extremely low humidity, since the scraper chain and the powder are different substances, when they rub against each other, electrons are easily transferred. Coupled with the weak conductivity of the air in a dry environment, static electricity accumulates in large quantities. If the dust content in the materials is relatively high, then at the moment of static electricity release, it is extremely easy to trigger the high-risk of dust explosion, and the consequences are unimaginable. In addition, static electricity will also cause the powder to adsorb on the equipment, further affecting the physical conveying efficiency and safety;

[0006] Third, most of the existing mobile scraper conveyors use rollers for movement during use. However, during operation, due to the influence of the vibration of the conveyed materials and the relatively small contact area of the rollers, it is easy to slip, affecting the working stability of the mobile scraper conveyor and the reliability of the mobile scraper conveyor in conveying materials.

[0007] Therefore, we propose a mobile scraper conveyor to solve the above problems. Summary of the Invention

[0008] The object of the present invention is to provide a mobile scraper conveyor in view of the above problems.

[0009] To achieve the above object, the present invention adopts the following technical solutions: A mobile scraper conveyor includes a scraper chain assembly and a conveyor main body. A bracket is fixedly connected to the bottom end of the conveyor main body. Universal wheels are installed at the four bottom ends of the bracket. A PLC controller is fixedly connected to the outer wall of the bracket;

[0010] A material humidity detection mechanism is fixedly connected to the upper surface of the conveyor main body at the feeding hopper;

[0011] A hollow ring pipe is fixedly sleeved on the outer wall of the feeding hopper of the conveyor main body. A plurality of arc pipes are fixedly communicated with the outer wall of the top end of the hollow ring pipe. The air inlet ends of the arc pipes penetrate through the inner wall of the feeding hopper of the conveyor main body. An air purification mechanism for dust prevention of the feeding hopper of the conveyor main body is fixedly connected to the upper surface of the bracket;

[0012] A purging mechanism for cleaning the adhered materials on the surface of the scraper chain assembly is fixedly connected to the outer wall of the top end of the conveyor main body;

[0013] Stabilizing mechanisms are fixedly connected to the outer walls on both sides of the bracket. The two stabilizing mechanisms are symmetrically distributed.

[0014] In the above-mentioned mobile scraper conveyor, the material humidity detection mechanism includes a micro air pump and an L-shaped conduit fixedly connected to the upper surface of the conveyor main body. The air inlet end of the micro air pump is fixedly communicated with the pipe wall of the L-shaped conduit. An installation hole is formed in the pipe wall of the L-shaped conduit, and a humidity sensor is fixedly connected to the hole wall of the installation hole in a sealed manner. An installation through hole is formed in the outer wall of the feeding hopper of the conveyor main body, and a first sealing bearing is fixedly connected to the hole wall of the installation through hole. The inner wall of the inner ring of the first sealing bearing is fixedly connected with a protective cylinder. A plurality of rectangular air inlet holes are formed in the outer wall of the protective cylinder. A plurality of transmission blades are fixedly connected to the side end of the protective cylinder. A circular hole is formed in the outer wall of the protective cylinder, and a second sealing bearing is fixedly connected to the hole wall of the circular hole. The inner wall of the second sealing bearing is fixedly connected with the outer wall of the L-shaped conduit.

[0015] Two extension rods are fixedly connected to the outer surface of the air inlet end of the L-shaped conduit. A wire brush for cleaning the rectangular air inlet holes is fixedly connected to the rod wall of the extension rod.

[0016] In the above-mentioned mobile scraper conveyor, the air purification mechanism includes a treatment box fixedly connected to the outer wall of the bracket. A partition is fixedly connected to the inner wall of the treatment box. An air extraction pump is fixedly connected to the upper surface of the partition. The air outlet end of the air extraction pump passes through the lower surface of the partition. The air inlet end of the air extraction pump is fixedly communicated with a first air pipe. The air inlet end of the first air pipe passes through the bracket and is fixedly communicated with the pipe wall of the hollow ring pipe. A rectangular through hole is formed in the outer wall of the treatment box, and a filtering mechanism is connected to the rectangular through hole. An ion generator is fixedly connected to the bottom inner wall of the treatment box. The bottom outer wall of the treatment box is fixedly communicated with a first reversing three-way solenoid valve. The two air outlet ends of the first reversing three-way solenoid valve are respectively fixedly communicated with a second air pipe and a third air pipe.

[0017] In the above-mentioned mobile scraper conveyor, the filtering mechanism includes a sealing plate. The outer wall of the sealing plate is fixedly connected to the outer wall of the treatment box by bolts. A sealing ring is fixedly connected to the inner wall of the sealing plate. A filter screen plate and an L-shaped composite filter plate are fixedly connected to the inner side wall of the sealing plate. A sponge filter block is jointly filled on the opposite side of the filter screen plate and the L-shaped composite filter plate. Limiting strips are connected to the opposite sides of the filter screen plate and the L-shaped composite filter plate. The side walls of the limiting strips are fixedly connected to the inner wall of the treatment box. The side walls of the filter screen plate, the L-shaped composite filter plate and the sponge filter block are all in contact with the inner wall of the treatment box.

[0018] In the above-mentioned mobile scraper conveyor, the purging mechanism includes a metal air guide cover fixedly connected to the upper surface of the conveyor main body. The bottom outer wall of the metal air guide cover is fixedly communicated with the air outlet end of the second air pipe. Two connecting pipes are fixedly communicated with the top outer wall of the metal air guide cover. The air outlet ends of the two connecting pipes are jointly fixedly communicated with a U-shaped pipe. The outer walls of both ends of the U-shaped pipe are fixedly connected to the outer wall of the conveyor main body. A plurality of second reversing three-way solenoid valves are fixedly communicated with the outer wall of the U-shaped pipe. The bottom air outlet ends of the plurality of second reversing three-way solenoid valves all pass through the top inner wall of the conveyor main body and are located directly above the top of the scraper chain assembly.

[0019] In the above-mentioned mobile scraper conveyor, the stabilizing mechanism includes a sleeve fixedly connected to the outer wall of the bracket. A round hole is formed in the bottom end of the sleeve, and a T-shaped rod is fixedly connected to the hole wall of the round hole. A sealing ring is fixedly sleeved on the rod wall of the T-shaped rod. The outer wall of the sealing ring is hermetically and movably connected to the inner wall of the sleeve. A return spring is sleeved on the rod wall of the T-shaped rod. A threaded hole is formed in the bottom end of the T-shaped rod, and an adjusting screw is connected to the hole wall of the threaded hole. The bottom end of the adjusting screw is connected with a universal ball. The bottom end of the universal ball is fixedly connected with a backing plate. An anti-slip pad is fixedly connected to the bottom lower surface of the backing plate.

[0020] In the above-mentioned mobile scraper conveyor, the air outlet end of the third air pipe is fixedly communicated with the outer wall of the top end of one of the sleeves, and a communicating pipe is fixedly communicated with the outer walls of the two sleeves. The air inlet end of the communicating pipe is fixedly communicated with the outer wall of the middle part of one of the sleeves, and the air outlet end of the communicating pipe is fixedly communicated with the outer wall of the top end of the other sleeve.

[0021] Compared with the existing technology, the advantages of a mobile scraper conveyor are as follows:

[0022] 1. By setting an air extraction pump, a first reversing three-way solenoid valve, a PLC controller and a stabilizing mechanism, when it is necessary to convey materials through the mobile scraper conveyor, first move the scraper conveyor to the material conveying position through the universal wheels. Then, the PLC controller not only controls the air extraction pump to start, but also controls the first reversing three-way solenoid valve to be energized for 30 seconds. The air extraction pump cooperates with the treatment box and the first reversing three-way solenoid valve to inject air into the stabilizing mechanism, and under the action of air pressure, the T-shaped rod extends out. After the 30-second countdown is completed, the PLC controller controls the first reversing three-way solenoid valve to be de-energized, and ensures that the two T-shaped rods of the two stabilizing mechanisms continue to maintain the extended state stably. Finally, the backing plates and anti-slip pads at the bottoms of the two stabilizing mechanisms are in stable contact with the ground, expanding the contact area between the scraper conveyor and the ground. Moreover, the two side braces can effectively improve the stability of the scraper conveyor during operation vibration. This mechanism can effectively improve the stability of the mobile scraper conveyor during operation, thereby improving the reliability of the mobile scraper conveyor.

[0023] 2. By setting a material humidity detection mechanism and a purging mechanism, when the materials to be conveyed pass through the feed hopper of the conveyor main body, the falling materials will be detected by the material humidity detection mechanism, and the detection result is fed back to the PLC controller. If the humidity of the materials detected by the humidity sensor exceeds the preset wet threshold of the PLC controller, and as the humidity value detected by the humidity sensor gradually increases, the PLC controller controls the air extraction volume of the air extraction pump to gradually increase. After the air extracted by the air extraction pump enters the second air pipe, it will be introduced into the purging mechanism, and the scraper chain assembly after discharging the materials will be purged by using the high-speed air flow. Moreover, the greater the material humidity, the faster the air flow speed and the higher the air flow pressure ejected by the second reversing three-way solenoid valve, and it can ensure that the wet materials adhering to the surface of the scraper chain assembly are reliably removed, thereby avoiding the additional adhered materials from increasing the load of the scraper chain assembly. This can not only improve the material conveying speed, but also reduce the wear of the scraper chain assembly, and at the same time reduce the probability of the scraper chain assembly derailing. This mechanism enables the mobile scraper conveyor to have the function of material humidity detection, and can clean the wet materials adhering to the surface of the scraper chain assembly. This can not only improve the material conveying efficiency, but also reduce the wear of the scraper chain assembly, as well as improve the service life and reliability of the mobile scraper conveyor.

[0024] 3. Through the provided ion generator, first three-way solenoid valve for commutation, and filtering mechanism, when the humidity of the material detected by the humidity sensor is lower than the preset humidity threshold of the PLC controller, the PLC controller controls the second three-way solenoid valve for commutation and the ion generator to be powered on. At the same time, the filtering mechanism can intercept and reuse the dust materials in the air conveyed by the air extraction pump. In addition, after the ion generator is powered on, it will generate a high-voltage corona to ionize the air conveyed to the bottom of the treatment tank and generate an ion airflow. After the ion airflow enters the purging mechanism, it can eliminate the static electricity of the mobile scraper conveyor. In this way, it can not only eliminate the risk of powder explosion caused by static electricity discharge and ensure production safety, but also prevent the powder materials from being adsorbed by static electricity and adhering to the inner wall of the conveyor main body, ensuring smooth material transportation. After the second three-way solenoid valve for commutation is powered on, it can change the exhaust direction of the purging mechanism, avoiding the situation where a large amount of powder materials in the dry materials are lifted at the outlet of the conveyor main body. This mechanism enables the mobile scraper conveyor to not only have the function of collecting dust materials during the transportation of dry materials, but also have the function of eliminating static electricity, which can improve the efficiency and safety reliability of material transportation. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a schematic structural diagram of a mobile scraper conveyor provided by the present invention;

[0026] Figure 2 is a schematic structural diagram of a purging mechanism in a mobile scraper conveyor provided by the present invention;

[0027] Figure 3 is a schematic structural diagram of a material humidity detection mechanism in a mobile scraper conveyor provided by the present invention;

[0028] Figure 4 is a schematic structural diagram of an air purification mechanism in a mobile scraper conveyor provided by the present invention;

[0029] Figure 5 is a schematic structural diagram of a stabilizing mechanism in a mobile scraper conveyor provided by the present invention;

[0030] Figure 6 is a schematic structural diagram of a filtering mechanism in a mobile scraper conveyor provided by the present invention;

[0031] Figure 7 is a schematic structural diagram of a scraper chain assembly in a mobile scraper conveyor provided by the present invention;

[0032] Figure 8 is a schematic three-dimensional structural diagram of a protective cylinder in a mobile scraper conveyor provided by the present invention.

[0033] In the figure: 1 scraper chain assembly, 2 conveyor main body, 3 support, 4 universal wheel, 5 material humidity detection mechanism, 51 micro air pump, 52 L-shaped conduit, 53 humidity sensor, 54 first sealing bearing, 55 protective cylinder, 56 rectangular air inlet hole, 57 drive blade, 58 second sealing bearing, 6 air purification mechanism, 61 treatment box, 62 partition board, 63 air extraction pump, 64 first air pipe, 65 ion generator, 66 first reversing three-way solenoid valve, 67 second air pipe, 68 third air pipe, 7 purging mechanism, 71 metal air guide cover, 72 connecting pipe, 73 U-shaped pipe, 74 second reversing three-way solenoid valve, 8 stabilizing mechanism, 81 sleeve, 82 T-shaped rod, 83 sealing ring, 84 return spring, 85 adjusting screw, 86 universal ball, 87 backing plate, 88 anti-slip pad, 9 filtering mechanism, 91 sealing plate, 92 sealing ring, 93 filter screen plate, 94 L-shaped composite filter plate, 95 sponge filter block, 96 limiting strip, 10 PLC controller, 11 hollow ring pipe, 12 arc-shaped pipe, 13 connecting pipe, 14 extension rod, 15 wire brush. Embodiment

[0034] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0035] As Figures 1-8As shown in the figure, a mobile scraper conveyor includes a scraper chain assembly 1 and a conveyor main body 2. A support 3 is fixedly connected to the bottom end of the conveyor main body 2. Universal wheels 4 are installed at the four bottom ends of the support 3. A PLC controller 10 is fixedly connected to the outer wall of the support 3. A material humidity detection mechanism 5 is fixedly connected to the upper surface of the conveyor main body 2 at the feeding hopper. The material humidity detection mechanism 5 includes a micro air pump 51 and an L-shaped conduit 52 fixedly connected to the upper surface of the conveyor main body 2. The air inlet end of the micro air pump 51 is fixedly communicated with the pipe wall of the L-shaped conduit 52. An installation hole is formed in the pipe wall of the L-shaped conduit 52, and a humidity sensor 53 is fixedly connected to the hole wall of the installation hole in a sealed manner. An installation through hole is formed in the outer wall of the feeding hopper of the conveyor main body 2, and a first sealing bearing 54 is fixedly connected to the hole wall of the installation through hole. The inner wall of the inner ring of the first sealing bearing 54 is fixedly connected to a protection cylinder 55. A plurality of rectangular air inlet holes 56 are formed in the outer wall of the protection cylinder 55. Two extension rods 14 are fixedly connected to the outer surface of the air inlet end of the L-shaped conduit 52. A wire brush 15 for cleaning the rectangular air inlet holes 56 is fixedly connected to the rod wall of the extension rod 14. The wire brush 15 on the extension rod 14 can clean the rectangular air inlet holes 56 to prevent materials from blocking the rectangular air inlet holes 56. A plurality of transmission blades 57 are fixedly connected to the side end of the protection cylinder 55. A circular hole is formed in the outer wall of the protection cylinder 55, and a second sealing bearing 58 is fixedly connected to the hole wall of the circular hole. The inner wall of the second sealing bearing 58 is fixedly connected to the outer wall of the L-shaped conduit 52. This mechanism enables the mobile scraper conveyor to have the function of detecting the humidity of materials.

[0036] A hollow ring pipe 11 is fixedly sleeved on the outer wall of the feed hopper of the conveyor main body 2. The outer wall of the top end of the hollow ring pipe 11 is fixedly communicated with a plurality of arc pipes 12. The air inlet ends of the arc pipes 12 pass through the inner wall of the feed hopper of the conveyor main body 2. An air purification mechanism 6 for dust prevention of the feed hopper of the conveyor main body 2 is fixedly connected to the upper surface of the support 3. The air purification mechanism 6 includes a treatment box 61 fixedly connected to the outer wall of the support 3. A partition 62 is fixedly connected to the inner wall of the treatment box 61. An air extraction pump 63 is fixedly connected to the upper surface of the partition 62. The air outlet end of the air extraction pump 63 passes through the lower surface of the partition 62. The air inlet end of the air extraction pump 63 is fixedly communicated with a first air pipe 64. The air inlet end of the first air pipe 64 passes through the support 3 and is fixedly communicated with the pipe wall of the hollow ring pipe 11. A rectangular through hole is formed in the outer wall of the treatment box 61, and a filtering mechanism 9 is connected to the rectangular through hole. The filtering mechanism 9 includes a sealing plate 91. The outer wall of the sealing plate 91 is fixedly connected to the outer wall of the treatment box 61 by bolts. A sealing ring 92 is fixedly connected to the inner wall of the sealing plate 91. A filter screen plate 93 and an L-shaped composite filter plate 94 are fixedly connected to the inner side wall of the sealing plate 91. A sponge filter block 95 is filled between the opposite sides of the filter screen plate 93 and the L-shaped composite filter plate 94. Limiting strips 96 are connected to the opposite sides of the filter screen plate 93 and the L-shaped composite filter plate 94. The side walls of the limiting strips 96 are fixedly connected to the inner wall of the treatment box 61. The side walls of the filter screen plate 93, the L-shaped composite filter plate 94 and the sponge filter block 95 are all in contact with the inner wall of the treatment box 61. An ion generator 65 is fixedly connected to the bottom inner wall of the treatment box 61. A first reversing three-way solenoid valve 66 is fixedly communicated with the bottom outer wall of the treatment box 61. The two air outlet ends of the first reversing three-way solenoid valve 66 are respectively fixedly communicated with a second air pipe 67 and a third air pipe 68. This mechanism enables the mobile scraper conveyor to have the function of collecting dust-containing materials during the transportation of dry materials, which can not only avoid polluting the environment, but also avoid wasting materials.

[0037] A purging mechanism 7 for cleaning the materials adhered to the surface of the scraper chain assembly 1 is fixedly connected to the outer wall of the top end of the conveyor main body 2. The purging mechanism 7 includes a metal air guide cover 71 fixedly connected to the upper surface of the conveyor main body 2. The outer wall of the bottom end of the metal air guide cover 71 is fixedly communicated with the air outlet end of the second air pipe 67. The outer wall of the top end of the metal air guide cover 71 is fixedly communicated with two connecting pipes 72. The air outlet ends of the two connecting pipes 72 are jointly fixedly communicated with a U-shaped pipe 73. The outer walls of both ends of the U-shaped pipe 73 are fixedly connected to the outer wall of the conveyor main body 2. A plurality of second reversing three-way solenoid valves 74 are fixedly communicated with the outer wall of the U-shaped pipe 73. The bottom air outlet ends of the plurality of second reversing three-way solenoid valves 74 all pass through the inner wall of the top end of the conveyor main body 2 and are located directly above the top end of the scraper chain assembly 1. This mechanism can clean the wet materials adhered to the surface of the scraper chain assembly 1, which can not only improve the efficiency of material transportation, but also reduce the wear of the scraper chain assembly 1, as well as improve the service life and reliability of the mobile scraper conveyor.

[0038] Stable mechanisms 8 are fixedly connected to the outer walls on both sides of the support 3. The two stable mechanisms 8 are symmetrically distributed. The stable mechanism 8 includes a sleeve 81 fixedly connected to the outer wall of the support 3. A round hole is provided at the bottom end of the sleeve 81, and a T-shaped rod 82 is fixedly connected to the hole wall of the round hole. A sealing ring 83 is fixedly sleeved on the rod wall of the T-shaped rod 82. The outer wall of the sealing ring 83 is hermetically and movably connected to the inner wall of the sleeve 81. A return spring 84 is sleeved on the rod wall of the T-shaped rod 82. A threaded hole is provided at the bottom end of the T-shaped rod 82, and an adjusting screw 85 is connected to the hole wall of the threaded hole. The bottom end of the adjusting screw 85 is connected to a universal ball 86. The bottom end of the universal ball 86 is fixedly connected to a backing plate 87. An anti-slip pad 88 is fixedly connected to the lower surface of the bottom end of the backing plate 87. The air outlet end of the third air pipe 68 is fixedly communicated with the outer wall of the top end of one of the sleeves 81. A communicating pipe 13 is fixedly communicated with the outer walls of the two sleeves 81. The air inlet end of the communicating pipe 13 is fixedly communicated with the outer wall of the middle part of one of the sleeves 81. The air outlet end of the communicating pipe 13 is fixedly communicated with the outer wall of the top end of the other sleeve 81. The communicating pipe 13 ensures that the two stable mechanisms 8 can simultaneously perform auxiliary support on the side of the mobile scraper conveyor, which can effectively improve the stability of the mobile scraper conveyor during operation, thereby improving the reliability of the mobile scraper conveyor.

[0039] The micro air pump 51, the air extraction pump 63, the second reversing three-way solenoid valve 74 and the first reversing three-way solenoid valve 66 are all electrically connected to the output end of the PLC controller 10 through wires. The humidity sensor 53 is electrically connected to the input end of the PLC controller 10 through wires. The above-mentioned energized devices and electrical connections are prior art and will not be elaborated here.

[0040] The operating principle of the present invention is described as follows: When it is necessary to convey materials through the mobile scraper conveyor, first, move the scraper conveyor to the material conveying position by means of the universal wheels 4, and then rotate and adjust the screw rod 85 according to the terrain to adjust the positions of the backing plate 87 and the anti-slip pad 88, so that after the T-shaped rod 82 extends out, the backing plate 87 and the anti-slip pad 88 can stably contact the ground. Then, the PLC controller 10 not only controls the start of the air extraction pump 63, but also controls the first reversing three-way solenoid valve 66 to be energized for 30 seconds. After the air extraction pump 63 is energized, it sucks the air at the feed hopper of the conveyor main body 2 through the first air pipe 64, the hollow ring pipe 11 and the arc pipe 12. Then, the air is conveyed by the air extraction pump 63 to the filtering mechanism 9. After being filtered by the filtering mechanism 9, the air enters the third air pipe 68 through the first reversing three-way solenoid valve 66. After the air in the third air pipe 68 is injected into the sleeve 81, the air pushes the T-shaped rod 82 to move outwards under the cooperation of the sealing ring 83, and makes the sealing ring 83 move to the air inlet of the communicating pipe 13. After that, the air in the sleeve 81 enters the sleeve 81 of another stabilizing mechanism 8 through the communicating pipe 13. Similarly, the T-shaped rod 82 in the other sleeve 81 is extended by the air pressure. At the same time, the 30-second countdown is completed, and the PLC controller 10 controls the first reversing three-way solenoid valve 66 to be de-energized, and ensures that the two T-shaped rods 82 of the two stabilizing mechanisms 8 continuously and stably maintain the extended state. At the same time, the air in the treatment box 61 enters the second air pipe 67 through the non-energized first reversing three-way solenoid valve 66, and finally makes the backing plates 87 and the anti-slip pads 88 at the bottoms of the two stabilizing mechanisms 8 stably contact the ground, expanding the contact area between the scraper conveyor and the ground. Moreover, the auxiliary support on both sides can effectively improve the stability of the scraper conveyor during operation vibration, avoiding the situation of offset at the material inlet and outlet positions. This mechanism can effectively improve the stability of the mobile scraper conveyor during operation, avoiding the situation of material conveying errors, thereby improving the reliability of the use of the mobile scraper conveyor;

[0041] When the material to be conveyed passes through the feed hopper of the conveyor main body 2, the falling material impacts the transmission blade 57 of the protective cylinder 55. The transmission blade 57 is driven by the kinetic energy of the falling material to drive the protective cylinder 55 to rotate on the first sealing bearing 54. The rectangular air inlet hole 56 at the side end of the protective cylinder 55 is located inside the falling material. At this time, the PLC controller 10 also controls the micro air pump 51 to work. The micro air pump 51 sucks the air inside the material through the L-shaped conduit 52, the protective cylinder 55, and the rectangular air inlet hole 56. The higher the humidity of the material, the higher the moisture content in the air inside the material. Conversely, the lower the humidity of the material, the lower the moisture content in the air inside the material. After the air inside the material flows into the L-shaped conduit 52, its humidity will be detected by the humidity sensor 53, and the humidity sensor 53 will send the humidity to the PLC controller 10 in the form of an electrical signal. If the humidity of the material detected by the humidity sensor 53 exceeds the preset humidity threshold of the PLC controller 10, and as the humidity value detected by the humidity sensor 53 gradually increases, the PLC controller 10 also gradually increases the air extraction volume of the air extraction pump 63. After the air extracted by the air extraction pump 63 enters the second air pipe 67, it will be introduced into the metal air guide cover 71, and finally injected into the top of the conveyor main body 2 through the connecting pipe 72, the U-shaped pipe 73, and the bottom air outlet ends of multiple second reversing three-way solenoid valves 74. The high-speed air flow is used to blow the wet material adhering to the surface of the scraper chain assembly 1. The higher the humidity of the material, the faster the air flow speed and the higher the air flow pressure ejected by the second reversing three-way solenoid valve 74, which can ensure that the wet material adhering to the surface of the scraper chain assembly 1 is reliably removed, thus avoiding the situation that the additional adhered material increases the load of the scraper chain assembly 1 and the running resistance of the scraper chain assembly 1 also increases sharply. This can not only improve the material conveying speed, but also reduce the wear of the scraper chain assembly 1, and at the same time reduce the wear between the scraper chain assembly 1 and the sprocket teeth in the conveyor main body 2, ensure stable meshing between the feeding and the sprocket teeth of the scraper chain assembly 1, and reduce the probability of the scraper chain assembly 1 derailing. This mechanism enables the mobile scraper conveyor to have the function of detecting the material humidity and can clean the wet material adhering to the surface of the scraper chain assembly 1, which can not only improve the material conveying efficiency, but also reduce the wear of the scraper chain assembly 1, as well as improve the service life and reliability of the mobile scraper conveyor;

[0042] When the material humidity detected by the humidity sensor 53 is lower than the humid threshold preset by the PLC controller 10, the PLC controller 10 controls the second reversing three-way solenoid valve 74 and the ion generator 65 to be energized. At the same time, the air extraction pump 63 cooperates with the first air pipe 64, the hollow ring pipe 11 and the arc pipe 12 to suck the powder material lifted at the feed hopper of the conveyor main body 2, so as to avoid the powder material from floating and polluting the environment. Then, the powder material is transported to the filtering mechanism 9 along with the air and will be filtered many times by the filter mesh plate 93, the sponge filter block 95 and the L-shaped composite filter plate 94 in the filtering mechanism 9. The powder material is intercepted by the filtering mechanism 9 and recycled to avoid waste of materials. The clean air is transported to the bottom of the treatment tank 61. At the same time, after the second reversing three-way solenoid valve 74 is energized, it can change the exhaust direction of the purging mechanism 7, so that the air inside the purging mechanism 7 is discharged from the conveyor main body 2, avoiding a large amount of powder material in the dry material from being lifted at the outlet of the conveyor main body 2 by the air flow, which not only causes environmental pollution but also waste of materials. After the ion generator 65 is energized, it will generate a high-voltage corona to ionize the air transported to the bottom of the treatment tank 61 and generate a large number of positive and negative ions. These ions form an ion air flow along with the air flow at the bottom of the treatment tank 61. In addition, during the transportation of the dry material by the mobile scraper conveyor, the dry material frequently rubs against the scraper chain assembly 1, which will cause static electricity to continuously accumulate on the metal surface of the conveyor main body 2. The ion air flow generated by the ion generator 65 can be injected into the metal air guide cover 71 through the first reversing three-way solenoid valve 66 and the second air pipe 67 to perform anti-static treatment on the metal surface of the conveyor main body 2. Specifically, the ion air flow is rich in positive and negative ions. Among them, the ions with opposite electrical charges to the static charges on the metal surface of the conveyor main body 2 will be attracted to the metal surface of the conveyor main body 2 under the action of the electric field, and the two will neutralize each other to achieve static electricity elimination. In this way, it can not only eliminate the risk of powder explosion caused by static electricity discharge and ensure production safety, but also prevent the powder material from being adsorbed by static electricity and adhering to the inner wall of the conveyor main body 2, ensuring smooth material transportation and maintaining the efficient operation of the mobile scraper conveyor. Finally, the ion air flow of the metal air guide cover 71 is discharged through the second reversing three-way solenoid valve 74 that is energized and opened. This mechanism enables the mobile scraper conveyor to not only have the function of collecting dust materials during the transportation of dry materials, but also have the function of removing static electricity, which can not only avoid dust pollution to the environment, but also avoid waste of materials, and can improve the efficiency and safety reliability of material transportation.

[0043] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, 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 mobile scraper conveyor, comprising a scraper chain assembly (1) and a conveyor main body (2), characterized in that, The bottom end of the conveyor main body (2) is fixedly connected with a bracket (3), universal wheels (4) are installed at the four bottom ends of the bracket (3), and a PLC controller (10) is fixedly connected to the outer wall of the bracket (3); A material humidity detection mechanism (5) is fixedly connected to the upper surface of the conveyor main body (2) at the feeding hopper; A hollow ring pipe (11) is fixedly sleeved on the outer wall of the feeding hopper of the conveyor main body (2), a plurality of arc pipes (12) are fixedly communicated with the outer wall of the top end of the hollow ring pipe (11), the air inlet end of the arc pipe (12) penetrates through the inner wall of the feeding hopper of the conveyor main body (2), and an air purification mechanism (6) for dust prevention of the feeding hopper of the conveyor main body (2) is fixedly connected to the upper surface of the bracket (3); A blowing mechanism (7) for cleaning the adhered materials on the surface of the scraper chain assembly (1) is fixedly connected to the outer wall of the top end of the conveyor main body (2); Stabilizing mechanisms (8) are fixedly connected to the outer walls on both sides of the bracket (3), and the two stabilizing mechanisms (8) are symmetrically distributed; The material humidity detection mechanism (5) includes a micro air pump (51) and an L-shaped conduit (52) fixedly connected to the upper surface of the conveyor main body (2), the air inlet end of the micro air pump (51) is fixedly communicated with the pipe wall of the L-shaped conduit (52), an installation hole is formed in the pipe wall of the L-shaped conduit (52), and a humidity sensor (53) is fixedly connected to the hole wall of the installation hole in a sealed manner. An installation through hole is formed in the outer wall of the feeding hopper of the conveyor main body (2), and a first sealing bearing (54) is fixedly connected to the hole wall of the installation through hole. The inner wall of the inner ring of the first sealing bearing (54) is fixedly connected with a protection cylinder (55), a plurality of rectangular air inlet holes (56) are formed in the outer wall of the protection cylinder (55), a plurality of transmission blades (57) are fixedly connected to the side end of the protection cylinder (55), a round hole is formed in the outer wall of the protection cylinder (55), and a second sealing bearing (58) is fixedly connected to the hole wall of the round hole. The inner wall of the second sealing bearing (58) is fixedly connected with the outer wall of the L-shaped conduit (52); The air purification mechanism (6) includes a processing box (61) fixedly connected to the outer wall of the bracket (3), a partition plate (62) is fixedly connected to the inner wall of the processing box (61), an air extraction pump (63) is fixedly connected to the upper surface of the partition plate (62), the air outlet end of the air extraction pump (63) penetrates through the lower surface of the partition plate (62), the air inlet end of the air extraction pump (63) is fixedly communicated with a first air pipe (64), the air inlet end of the first air pipe (64) penetrates through the bracket (3) and is fixedly communicated with the pipe wall of the hollow ring pipe (11), a rectangular through hole is formed in the outer wall of the processing box (61), and a filtering mechanism (9) is connected to the rectangular through hole. An ion generator (65) is fixedly connected to the bottom inner wall of the processing box (61), and a first reversing three-way solenoid valve (66) is fixedly communicated with the bottom outer wall of the processing box (61). The two air outlet ends of the first reversing three-way solenoid valve (66) are respectively fixedly communicated with a second air pipe (67) and a third air pipe (68).

2. A mobile scraper conveyor according to claim 1, characterized in that, The outer surface of the air inlet end of the L-shaped conduit (52) is fixedly connected with two extension rods (14), and a wire brush (15) for cleaning the rectangular air inlet hole (56) is fixedly connected to the rod wall of the extension rod (14).

3. A mobile scraper conveyor according to claim 1, characterized in that, The filtering mechanism (9) includes a sealing plate (91), the outer wall of the sealing plate (91) is fixedly connected to the outer wall of the treatment box (61) by bolts, a sealing ring (92) is fixedly connected to the inner wall of the sealing plate (91), a filter mesh plate (93) and an L-shaped composite filter plate (94) are fixedly connected to the inner side wall of the sealing plate (91), a sponge filter block (95) is jointly filled on the opposite side of the filter mesh plate (93) and the L-shaped composite filter plate (94), limiting strips (96) are connected to the opposite sides of the filter mesh plate (93) and the L-shaped composite filter plate (94), the side walls of the limiting strips (96) are fixedly connected to the inner wall of the treatment box (61), and the side walls of the filter mesh plate (93), the L-shaped composite filter plate (94) and the sponge filter block (95) are all in contact with the inner wall of the treatment box (61).

4. A mobile scraper conveyor according to claim 1, characterized in that, The purging mechanism (7) includes a metal air guide cover (71) fixedly connected to the upper surface of the conveyor main body (2), the outer wall of the bottom end of the metal air guide cover (71) is fixedly communicated with the air outlet end of the second air pipe (67), two connecting pipes (72) are fixedly communicated with the outer wall of the top end of the metal air guide cover (71), the air outlet ends of the two connecting pipes (72) are jointly fixedly communicated with a U-shaped pipe (73), the outer walls of both ends of the U-shaped pipe (73) are fixedly connected to the outer wall of the conveyor main body (2), a plurality of second reversing three-way solenoid valves (74) are fixedly communicated with the outer wall of the U-shaped pipe (73), and the bottom air outlet ends of the plurality of second reversing three-way solenoid valves (74) all pass through the inner wall of the top end of the conveyor main body (2) and are located directly above the top end of the scraper chain assembly (1).

5. A mobile scraper conveyor according to claim 1, characterized in that, The stabilizing mechanism (8) includes a sleeve (81) fixedly connected to the outer wall of the bracket (3), a round hole is opened at the bottom end of the sleeve (81), and a T-shaped rod (82) is fixedly connected to the hole wall of the round hole. A sealing ring (83) is fixedly sleeved on the rod wall of the T-shaped rod (82), and the outer wall of the sealing ring (83) is hermetically and movably connected to the inner wall of the sleeve (81). A return spring (84) is sleeved on the rod wall of the T-shaped rod (82). A threaded hole is opened at the bottom end of the T-shaped rod (82), and an adjusting screw (85) is connected to the hole wall of the threaded hole. The bottom end of the adjusting screw (85) is connected with a universal ball (86), and a backing plate (87) is fixedly connected to the bottom end of the universal ball (86). An anti-slip pad (88) is fixedly connected to the lower surface of the bottom end of the backing plate (87).

6. A mobile scraper conveyor according to claim 5, characterized in that, The air outlet end of the third air pipe (68) is fixedly communicated with the outer wall of the top end of one of the sleeves (81), a communicating pipe (13) is fixedly communicated with the outer walls of the two sleeves (81), the air inlet end of the communicating pipe (13) is fixedly communicated with the outer wall of the middle part of one of the sleeves (81), and the air outlet end of the communicating pipe (13) is fixedly communicated with the outer wall of the top end of the other sleeve (81).

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