Search

CN-117839852-B - Coal blocking alarm device of medium-speed coal mill

CN117839852BCN 117839852 BCN117839852 BCN 117839852BCN-117839852-B

Abstract

The invention belongs to the technical field of coal mill safety equipment, and discloses a coal blocking alarm device of a medium-speed coal mill, which comprises a controller, an alarm lamp and a sensor, the back of the controller is provided with a signal interface and an assembly cavity respectively, and the inside of the back of the controller is provided with a middle hole. According to the invention, the gas is pressed into the elastic air bag under the action of rotary extrusion, the signal connector maintains good sealing after being sleeved by utilizing the expansion effect of the elastic air bag after ventilation, and then the air in the signal connector is pumped out when the movable plug in the suction assembly is pulled by the operation assembly to move, the signal connector is adsorbed and fixed after being sleeved by the sealing frame under the action of negative pressure, so that the stability of the signal connector after the actual wiring is installed is greatly improved, the good grafting stability can be maintained under the action of external force pulling or vibration effect, the condition of loosening and wire-off is effectively avoided, the frequency of arranging manual overhaul and investigation can be reduced, the use effect is good, and the monitoring alarm is stable and reliable.

Inventors

  • TANG SHIBAO
  • GAO CHANG
  • TAO LIANG
  • WANG HUAN
  • Ou Zizhen

Assignees

  • 国能长源武汉青山热电有限公司

Dates

Publication Date
20260508
Application Date
20231130

Claims (7)

  1. 1. A coal blocking alarm device of a medium speed coal mill comprises a controller (1), The intelligent alarm lamp is characterized in that a signal interface (3) and an assembly cavity (4) are respectively formed in the back face of a controller (1), a middle hole (5) is formed in the back face of the controller (1), two ends of the middle hole (5) are respectively communicated with the signal interface (3) and the assembly cavity (4), a signal connector (6) is movably sleeved in the signal interface (3), a cable (8) is electrically connected between the signal connector (6) and the sensor (9), an elastic air bag (11) is sleeved on the outer surface of the signal connector (6), an adjusting ring (13) is sleeved on the end face of the signal connector (6) in a threaded mode, a suction assembly (16) is arranged in the assembly cavity (4), and the suction assembly (16) comprises a suction cylinder (161), A connecting plate (162), a movable plug (163), Pull rod (164) and spring (165), suction cylinder (161) fixed connection is in the top surface of assembly chamber (4) internal surface and be linked together with centre bore (5), pull rod (164) fixed connection is in the top surface of connecting plate (162), movable stopper (163) fixed connection is at the top of pull rod (164) and cover is established in the inside of suction cylinder (161), the upper end fixed connection of spring (165) is on the bottom surface of movable stopper (163), the lower extreme fixed connection of spring (165) is on the top surface of connecting plate (162), the bottom surface of suction subassembly (16) is equipped with operating component (17), operating component (17) are including threaded rod (171), a rotating plate (172), Fixed cover (173) and ladder chamber (174), fixed cover (173) fixed connection is on the bottom surface of connecting plate (162), the bottom at fixed cover (173) is seted up in ladder chamber (174), rotation board (172) rotate and cup joint in the inside of ladder chamber (174), the bottom surface and threaded rod (171) fixed connection of rotation board (172), threaded hole (15) are seted up to the inside at controller (1) back, threaded rod (171) screw thread cup joints in threaded hole (15), the place ahead at controller (1) back is equipped with communication subassembly (18), communication subassembly (18) include communication frame (181), Inhale pipe (182) and delivery tube (183), the side fixed mounting of controller (1) has installation component (19), installation component (19) include mounting bracket (191) and mounting bolt (192), mounting bracket (191) fixed connection is on the side of controller (1), mounting bolt (192) cup joint on the terminal surface of mounting bracket (191), the side of installation component (19) is equipped with seal assembly (20), seal assembly (20) include diaphragm (201), sleeve pipe (202), sealed cowling (203), Movable rod (204) and No. two spring (205), diaphragm (201) fixed connection is on the side of mounting bracket (191), sleeve pipe (202) fixed connection is on the side of diaphragm (201), the outside at mounting bolt (192) is established to sealed cowling (203) cover, the one end and the sealed cowling (203) fixed connection of movable rod (204), the other end and No. two spring (205) fixed connection of movable rod (204), the inside at sleeve pipe (202) is established to the one end cover of movable rod (204), no. two spring (205) are located the inside of sleeve pipe (202), the other end of No. two spring (205) is fixed in the inside of sleeve pipe (202), the both ends of communicating component (18) are linked together with suction component (16) and sealing component (20) respectively.
  2. 2. The medium speed coal mill coal blocking alarm device according to claim 1, wherein an installation ring groove (14) is formed in the outer surface of the signal joint (6), the elastic air bag (11) is sleeved in the installation ring groove (14), a sealing frame (7) is fixedly sleeved on the outer surface of the signal joint (6), a thread groove (10) and a through hole (12) are formed in the end face and the inner portion of the signal joint (6) respectively, the inner surface of the thread groove (10) is in threaded sleeve connection with the adjusting ring (13), and two ends of the through hole (12) are respectively communicated with the thread groove (10) and the elastic air bag (11).
  3. 3. The medium speed coal pulverizer coal plugging alarm device according to claim 1, wherein two ends of the suction pipe (182) are fixedly communicated with the communication frame (181) and the suction cylinder (161) respectively.
  4. 4. The medium speed coal mill coal blocking alarm device according to claim 1, wherein two ends of the passing-out pipe (183) are fixedly communicated with the communicating frame (181) and the sleeve (202) respectively.
  5. 5. The medium speed coal mill coal blocking alarm device according to claim 1 is characterized in that the alarm lamps (2) are fixedly arranged at the top of the controller (1), and the alarm lamps (2) are in one-to-one correspondence with the sensors (9).
  6. 6. The medium speed coal mill coal blocking alarm device according to claim 5 is characterized in that the number of the sensors (9) is three.
  7. 7. The medium speed coal mill coal blocking alarm device according to claim 1, wherein the sensor (9) comprises a pressure sensor, a temperature sensor and a vibration sensor.

Description

Coal blocking alarm device of medium-speed coal mill Technical Field The invention belongs to the technical field of coal mill safety equipment, and particularly relates to a coal blocking alarm device of a medium-speed coal mill. Background The coal blocking alarm device for medium speed coal mill is one device for monitoring and alarming the coal blocking condition of medium speed coal mill. The medium speed coal mill is a key device in a pulverized coal grinding system and is used for grinding coal into fine powder and supplying the fine powder to a boiler for combustion. However, due to factors such as the nature of coal and technological parameters, the medium speed coal mill can have the condition of blocking coal in the running process, so that equipment failure and potential safety hazard are caused. The utility model provides a medium speed mill coal blocking alarm device in the prior art, in the use, adopt multiunit sensor collocation generally, the detection of medium speed mill coal blocking condition is realized in the complex, in actual assembly process, multiunit wired sensor adopts signal connector to insert the signal input part of controller, realize connecting the detection, however, along with use after a period, direct male signal connector is after inserting, along with the device receives external force pulling and vibrations influence, signal connector's connection stability in signal input port variation, the condition that drops can appear usually, influence actual detection alarming ability, the maintenance investigation of wiring needs the timing arrangement personnel, increase the human input, the in-service use effect is not good. Disclosure of Invention The invention aims to provide a coal blocking alarm device of a medium-speed coal mill, which aims to solve the problems in the background technology. In order to achieve the aim, the invention provides the technical scheme that the coal blocking alarm device of the medium speed coal mill comprises a controller, an alarm lamp and a sensor, wherein a signal interface and an assembly cavity are respectively arranged on the back surface of the controller, a middle hole is formed in the back surface of the controller, two ends of the middle hole are respectively communicated with the signal interface and the assembly cavity, a signal connector is movably sleeved in the signal interface, a cable is electrically connected between the signal connector and the sensor, an elastic air bag is sleeved on the outer surface of the signal connector, an adjusting ring is sleeved on the end surface of the signal connector in a threaded manner, a suction assembly is arranged in the assembly cavity, the suction assembly is communicated with the middle hole, an operation assembly is arranged on the bottom surface of the suction assembly, a communication assembly is arranged in front of the back surface of the controller, a mounting assembly is fixedly arranged on the side surface of the controller, a sealing assembly is arranged on the side surface of the mounting assembly, and two ends of the communication assembly are respectively communicated with the suction assembly and the sealing assembly. Preferably, the outer surface of the signal joint is provided with a mounting ring groove, the elastic air bag is sleeved in the mounting ring groove, the outer surface of the signal joint is fixedly sleeved with a sealing frame, the end face and the inner part of the signal joint are respectively provided with a thread groove and a through hole, the inner surface of the thread groove is in threaded sleeve joint with the adjusting ring, and two ends of the through hole are respectively communicated with the thread groove and the elastic air bag. Preferably, the suction assembly comprises a suction cylinder, a connecting plate, a movable plug, a pull rod and a first spring, wherein the suction cylinder is fixedly connected to the top surface of the inner surface of the assembly cavity and is communicated with the middle hole, the pull rod is fixedly connected to the top surface of the connecting plate, the movable plug is fixedly connected to the top end of the pull rod and is sleeved in the suction cylinder, the upper end of the first spring is fixedly connected to the bottom surface of the movable plug, and the lower end of the first spring is fixedly connected to the top surface of the connecting plate. Preferably, the operation assembly comprises a threaded rod, a rotating plate, a fixed sleeve and a step cavity, wherein the fixed sleeve is fixedly connected to the bottom surface of the connecting plate, the step cavity is formed in the bottom of the fixed sleeve, the rotating plate is rotationally sleeved in the step cavity, the bottom surface of the rotating plate is fixedly connected with the threaded rod, a threaded hole is formed in the back surface of the controller, and the threaded rod is in threaded sleeve connection with the threaded hole. Pr