Mine return air waste heat recycling device and method

Abstract

The application discloses a mine return air waste heat recycling device and method, relates to the technical field of mine return air waste heat recycling devices, and comprises a return air pipe, a wind guide shell, an arched filter screen, a return frame, a scraping mechanism arranged on the inner side of the return frame, a guide block arranged above the arched filter screen, a dust pressing assembly arranged on the outer wall of the guide block, and a knocking part arranged at the top end of the return frame and extending to the top end of the arched filter screen. Through cooperation of the trapezoidal scraping plate and the pressing seat and other parts, the hydraulic cylinder output end drives the pressing seat to drive the two push-and-swing rods to move downwards, so that the push-and-swing plate pushes the guide block to slide on the outer wall of the arched filter screen, the trapezoidal scraping plate is driven by the rectangular guide block to move on the outer wall of the arched filter screen, the top end of the surface of the arched filter screen is cleaned, manual operation of the staff is not needed, and the practicability of the whole device is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of mine return air waste heat recovery device, in particular to a mine return air waste heat recovery device and method. BACKGROUND

[0002] The mine return air contains very rich waste heat resources in the process of coal mine production, and the temperature and humidity of the air flow are basically stable throughout the year, which is a very high-quality low-temperature heat source. In the process of coal mine production, the mine return air is often directly discharged into the atmosphere and wasted. The existing technology usually combines heat pump technology and air spraying technology to recover and utilize the low-temperature heat energy in the mine return air, so as to achieve cooling in summer and heating in winter.

[0003] However, the existing mine return air waste heat recovery device generally collects mine return air through a return air pipeline. However, the front end of the return air pipeline is generally provided with a filter screen to filter dust particles in the return air during the collection of the return air. Since the return air is generally continuous, the surface of the filter screen is often blocked by dust particles, so that the filter screen needs to be replaced and cleaned by the staff regularly. In this process, the staff needs to shut down the operation of the mine return air waste heat recovery device, which is very troublesome. Therefore, the present application provides a mine return air waste heat recovery device and method to solve the above problems. SUMMARY

[0004] The present application aims to solve the problem of easy clogging of the filter screen at the front end of the return air pipeline of the mine return air waste heat recovery device, and provides a mine return air waste heat recovery device and method.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a mine return air waste heat recovery device, comprising a return air pipe, one end of the return air pipe is fixedly connected with a wind guide shell, an arched filter screen is fixedly connected at the air inlet of the wind guide shell, a back-shaped frame is fixedly connected to the outer wall of the wind guide shell through a bolt assembly, a scraping mechanism is arranged on the inner side of the back-shaped frame, a guide block is arranged above the arched filter screen, a dust pressing assembly is arranged on the outer wall of the guide block, and a knocking piece extending to the top end of the arched filter screen is arranged at the top end of the back-shaped frame.

[0006] The scraping mechanism comprises a connecting sleeve fixedly connected to the outer wall of one side of the guide block, a rectangular guide block is slidably connected in the connecting sleeve, a trapezoidal scraping plate is fixedly connected to one end of the rectangular guide block outside the guide block, and the trapezoidal scraping plate is attached to the outer wall of the arched filter screen, an adjusting spring is fixedly connected to the top end of the rectangular guide block, the top end of the adjusting spring is fixedly connected with the connecting sleeve, and a pressing piece is arranged on the inner side of the back-shaped frame and the top end of the guide block.

[0007] As a further scheme of the present application: the scraping mechanism further comprises a swing rod arranged on the outer wall of the air guide shell, a through slot is formed in the inner side of the swing rod, a rotating shaft is fixedly connected to the inner side of the swing rod, one end of the rotating shaft is rotatably connected to the air guide shell, a torsion spring is mounted on the outer wall of the swing rod outside the rotating shaft, one end of the torsion spring is mounted on the outer wall of the air guide shell, a connecting swing seat is fixedly connected to the outer wall of the guide block, one end of the connecting swing seat is fixedly connected to the swing rod, a scraping plate is fixedly connected to the inner side of the swing rod, and the scraping plate is attached to the outer wall of the arc-shaped filter screen.

[0008] As a further scheme of the present application: the swing rod, the trapezoidal scraping plate and the guide block are provided in two groups, each group of the swing rod is provided with two swing rods, the through slot is matched with the other swing rod, and the two groups of swing rods are arranged in a cross shape.

[0009] As a further scheme of the present application: the pressing part comprises a hydraulic cylinder fixedly connected to the inner side of the back-shaped frame, a pressing seat is connected to the output end of the hydraulic cylinder, auxiliary seats are fixedly connected to the outer walls of the two sides of the pressing seat, a push swing rod is rotatably connected to the inner side of the auxiliary seat, a push swing plate is fixedly connected to the outer wall of the guide block, a connecting push seat is fixedly connected to the inner side of the push swing plate, and the push swing rod is rotatably connected to the inner side of the connecting push seat.

[0010] As a further scheme of the present application: the dust pressing assembly comprises a water tank fixedly connected to the outer walls of the two sides of the back-shaped frame, a plurality of support seats are fixedly connected to the outer wall of the guide block, atomizing nozzles are mounted on the inner sides of the plurality of support seats, a drainage pipe is connected to the water inlet of the atomizing nozzle, a flexible hose is fixedly connected to the water inlet of the drainage pipe, and one end of the flexible hose is fixedly connected to the water outlet of the water tank.

[0011] As a further further scheme of the present application: the knocking part comprises an impact block arranged at the top end of the arched filter screen, the top end of the impact block is fixedly connected with a first pulling column, the top end of the first pulling column is fixedly connected with an impact spring, the top end of the impact spring is fixedly connected with the back-shaped frame, the inner side of the back-shaped frame is provided with a second pulling column, the inner side of the back-shaped frame is fixedly connected with a limiting sleeve ring, the limiting sleeve ring is arranged on the outer wall of the second pulling column, the top end of the first pulling column is fixedly connected with a first pulling rope, one end of the first pulling rope is fixedly connected with the second pulling column, the top end of the back-shaped frame is fixedly connected with a first guide seat, the inner side of the first guide seat is rotatably connected with a first guide wheel, the first pulling rope is attached to the outer wall of the first guide wheel, the outer wall of the compression seat and the outer wall of the second pulling column are provided with a pulling assembly, and the outer wall of the hydraulic cylinder and the outer wall of the second pulling column are provided with a defense part.

[0012] As a further further scheme of the present application: the pulling assembly comprises a guide plate fixedly connected at the top end of the compression seat, one side of the outer wall of the guide plate is fixedly connected with a rectangular guide shell, the inner side of the rectangular guide shell is slidably connected with a trapezoidal locking block, one end of the trapezoidal locking block penetrates to the outside of the second pulling column, the top end of the trapezoidal locking block is provided with an inclined surface, the other end of the outer wall of the trapezoidal locking block is fixedly connected with a return spring, one end of the return spring is mounted in the inside of the rectangular guide shell, the other end of the outer wall of the trapezoidal locking block is fixedly connected with a second pulling rope on the inner side of the return spring, one end of the second pulling rope is fixedly connected with the back-shaped frame, the top end of the rectangular guide shell is fixedly connected with a second guide seat, the inner side of the second guide seat is rotatably connected with a second guide wheel, the second pulling rope is attached to the outer wall of the second guide wheel, the inner side of the second guide wheel is rotatably connected with a plurality of compression wheels, a plurality of the compression wheels are pressed on the outer wall of the second pulling rope, and the bottom end of the second pulling column is fixedly connected with a hemispherical block.

[0013] As a further further scheme of the present application: the second pulling column is internally provided with a fixing hole matched with the trapezoidal locking block, and the rectangular guide shell is internally provided with a guide groove matched with the trapezoidal locking block.

[0014] As a further further scheme of the present application: the defense part comprises a conical scraping block fixedly connected at the front end of the hydraulic cylinder, the inner side of the conical scraping block is attached to the outer wall of the output end of the hydraulic cylinder, the outer wall of the conical scraping block is provided as a conical surface, one side of the outer wall of the conical scraping block is fixedly connected with a rectangular block, one side of the outer wall of the second pulling column is fixedly connected with a rectangular impact plate, and the rectangular impact plate is attached to the bottom end of the rectangular block.

[0015] The application further discloses a mine return air waste heat recycling method using the mine return air waste heat recycling device.

[0016] S1, first, the return air pipe is connected with the corresponding waste heat recycling equipment, when the air in the mine passes through the arched filter screen and enters the return air pipe, the waste heat in the return air is recycled by the special waste heat recycling equipment;

[0017] S2, when the surface of the arched filter screen needs to be cleaned, the hydraulic cylinder is started, the output end of the hydraulic cylinder drives the pressing seat to drive the two push-and-swing rods to move downward, so that the push-and-swing plate pushes the guide block to slide on the outer wall of the arched filter screen, and the trapezoidal scraping plate is driven by the rectangular guide block to move on the outer wall of the arched filter screen, so that the surface of the arched filter screen is cleaned;

[0018] S3, when the guide block slides on the outer wall of the arched filter screen, the swing rod is driven by the swing seat to rotate around the rotating shaft, and the one end of the torsional spring is driven to rotate, so that the torsional spring is twisted, and the swing rod is rotated to drive the scraping plate to rotate, so that the side surface of the arched filter screen is scraped;

[0019] S4, when the surface of the arched filter screen needs to be cleaned, the atomizing nozzle is started, the output end of the atomizing nozzle sprays water mist to reduce dust cleaned by the trapezoidal scraping plate, so that dust does not occur again, when the water mist sprayed by the atomizing nozzle is aimed at the surface of the arched filter screen, the dust on the surface of the arched filter screen adheres to the top end of the arched filter screen, and the dust on the surface of the arched filter screen is cleaned by the scraping of the trapezoidal scraping plate, so that the dust on the surface of the arched filter screen is cleaned better;

[0020] S5, when the pressing seat approaches the arched filter screen, the second pulling column is driven by the trapezoidal locking block to move synchronously, so that the first pulling rope pulls the first pulling column, and the impact block is driven to move away from the arched filter screen, when the trapezoidal locking block moves towards the arched filter screen, the second pulling rope is fixed at one end, so that the trapezoidal locking block is pulled, when the trapezoidal locking block is pulled out of the fixing hole in the second pulling column, the impact spring is not subjected to external force, the impact block is reset by the first pulling column, the impact block hits the outer wall of the arched filter screen, the trapezoidal scraping plate vibrates by resonance, the dust on the surface of the arched filter screen and the surface of the trapezoidal scraping plate falls down, and the cleaning efficiency of the surface of the arched filter screen is improved.

[0021] S6, the output end of the hydraulic cylinder is contracted and the output end is cleaned by the conical scraping block, dust on the surface is cleaned down, so that the hydraulic cylinder can normally operate, when the impact spring pushes the first pull column to reset, the first pull rope is pulled, so that the second pull column is quickly reset, the rectangular block is impacted by the rectangular impact plate, so that the dust adhered to the output end of the hydraulic cylinder and the dust of the conical outer wall are vibrated down.

[0022] Compared with the prior art, the beneficial effects of the present application are:

[0023] 1. By setting the trapezoidal scraping plate and the cooperation of the pressing seat and other parts, the hydraulic cylinder output end drives the pressing seat to drive the two push rods to move downward, so that the guide block is pushed by the push plate to slide on the outer wall of the arched filter screen, so that the trapezoidal scraping plate is moved on the outer wall of the arched filter screen by the rectangular guide block, and the surface of the arched filter screen is cleaned, without manual operation of the staff, thereby improving the practicability of the whole equipment.

[0024] 2. By setting the cooperation of the scraping plate and the swing rod and other parts, when the guide block slides on the outer wall of the arched filter screen, the swing rod is driven by the continuous swing seat to rotate through the rotating shaft, thereby driving one end of the torsional spring to rotate, so that the torsional spring is twisted, the swing rod is rotated at the same time to drive the scraping plate to rotate, so as to scrape the side surface of the arched filter screen.

[0025] 3. By setting the dust pressing assembly, when the arched filter screen surface needs to be cleaned, the atomizing nozzle is started, the water mist sprayed from the output end of the atomizing nozzle is used to reduce the dust cleaned by the trapezoidal scraping plate, so that the dust does not occur again. When the water mist sprayed by the atomizing nozzle is aimed at the surface of the arched filter screen, the dust on the surface of the arched filter screen adheres to the top end of the arched filter screen, which is cleaned by the scraping of the trapezoidal scraping plate, so as to better clean the dust on the surface of the arched filter screen.

[0026] 4、By setting the knock and pull out assembly, the compression seat is close to the arched filter screen, the trapezoidal locking block drives the second pull column to move synchronously, so that the first pull rope pulls the first pull column, and then pulls the impact block away from the arched filter screen to move, when the trapezoidal locking block moves towards the arched filter screen, the second pull rope is fixed at one end, so that the trapezoidal locking block is pulled, when the trapezoidal locking block is pulled out of the second pull column, the impact spring is no longer subjected to the force of the external force, the impact block is reset by the first pull column, so that the impact block hits the outer wall of the arched filter screen, the resonance makes the trapezoidal scraping plate vibrate, so that the dust on the surface of the arched filter screen and the surface of the trapezoidal scraping plate falls down, thereby improving the cleaning efficiency of the surface of the arched filter screen;

[0027] 5、By setting the defense part, when the output end of the hydraulic cylinder is contracted, the output end is cleaned by the conical scraping block, so that the dust on the surface is cleaned down, so that the hydraulic cylinder can run normally, when the impact spring pushes the first pull column to reset, the first pull rope is pulled, so that the second pull column is pulled to reset quickly, the rectangular impact plate is impacted on the rectangular block, so that the dust adhered to the output end of the hydraulic cylinder and the dust on the conical outer wall are vibrated down. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 It is the structural diagram of the application;

[0029] Figure 2 It is the top structure diagram of the air guide shell of the application;

[0030] Figure 3 It is the Figure 2 It is the enlarged view of A in the application;

[0031] Figure 4 It is the top structure diagram of the arched filter screen of the application;

[0032] Figure 5 It is the local structure diagram of the scraping mechanism of the application;

[0033] Figure 6 It is the structure diagram of the knock and pull out assembly of the application;

[0034] Figure 7 It is the top structure diagram of the compression seat of the application;

[0035] Figure 8 It is the sectional view of the rectangular guide shell of the application;

[0036] Figure 9 It is the inside structure diagram of the second guide wheel of the application.

[0037] In the figure: 1, return air pipe; 2, air guide shell; 3, arched filter screen; 401, return frame; 402, water tank; 403, swing rod; 404, rotating shaft; 405, telescopic hose; 406, drainage pipe; 407, connecting sleeve; 408, guide block; 409, swing seat; 410, push swing board; 411, trapezoidal scraping board; 412, impact block; 413, first pulling column; 414, first pulling rope; 415, first guide wheel; 416, first guide seat; 417, push swing rod; 418, impact spring; 419, compression seat; 420, semispherical block; 421, guide board; 422, rectangular block; 423, conical scraping block; 424, rectangular impact board; 425, conical surface; 426, second pulling rope; 427, second guide wheel; 428, second guide seat; 429, rectangular guide shell; 430, torsion spring; 431, atomizing nozzle; 432, support seat; 433, rectangular guide block; 434, scraping board; 435, through slot; 436, adjusting spring; 437, limiting collar; 438, hydraulic cylinder; 439, connecting push seat; 440, trapezoidal locking block; 441, inclined surface; 442, return spring; 443, compression wheel; 444, second pulling column; 445, auxiliary seat. DETAILED DESCRIPTION

[0038] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0039] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third" are only for descriptive purposes and cannot be understood as indicating or implying relative importance. In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "setting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be connected inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances. The embodiments will be described below according to the overall structure of the present application.

[0040] Please refer to Figures 1-9 In the embodiments of the present application, a mine return air waste heat recycling device comprises a return air pipe 1, one end of the return air pipe 1 is fixedly connected with a wind guide shell 2, an arched filter screen 3 is fixedly connected at the air inlet of the wind guide shell 2, a back-shaped frame 401 is fixedly connected to the outer wall of the wind guide shell 2 through a bolt assembly, a scraping mechanism is arranged on the inner side of the back-shaped frame 401, a guide block 408 is arranged above the arched filter screen 3, a dust pressing assembly is arranged on the outer wall of the guide block 408, and a knocking piece is arranged at the top end of the back-shaped frame 401 and extends to the top end of the arched filter screen 3.

[0041] The scraping mechanism comprises a connecting sleeve 407 fixedly connected to the outer wall of one side of the guide block 408, a rectangular guide block 433 is slidably connected in the connecting sleeve 407, a trapezoidal scraping plate 411 is fixedly connected to one end of the rectangular guide block 433 and penetrates to the outside of the guide block 408, and the trapezoidal scraping plate 411 is attached to the outer wall of the arched filter screen 3, an adjusting spring 436 is fixedly connected to the top end of the rectangular guide block 433, the top end of the adjusting spring 436 is fixedly connected with the connecting sleeve 407, and a pressing piece is arranged on the inner side of the back-shaped frame 401 and the top end of the guide block 408.

[0042] In this embodiment: the surface of the arched filter screen 3 is cleaned by the scraping mechanism, and the dust cleaned by the scraping mechanism is treated by the dust suppression assembly to make the dust clump, so that the surface of the arched filter screen 3 is better cleaned by the scraping mechanism, and the arched filter screen 3 is impacted by the knocking part to make the clumped dust on the surface of the arched filter screen 3 slide down from the surface, so that the surface of the arched filter screen 3 is automatically cleaned by the cooperation of the above multiple parts without manual operation of the staff.

[0043] Please refer to Figures 1-7 , the scraping mechanism further comprises a swing rod 403 arranged on the outer wall of the air guide shell 2, a through slot 435 is formed in the inner side of the swing rod 403, a rotating shaft 404 is fixedly connected to the inner side of the swing rod 403, one end of the rotating shaft 404 is rotatably connected to the air guide shell 2, a torsional spring 430 is mounted on the outer side of one side of the swing rod 403 outside the rotating shaft 404, one end of the torsional spring 430 is mounted on the outer side of one side of the air guide shell 2, a guide block 408 is fixedly connected to the outer wall of the air guide shell 2, a connecting swing seat 409 is fixedly connected to one end of the swing rod 403, a scraping plate 434 is fixedly connected to the inner side of the swing rod 403, the scraping plate 434 is attached to the outer wall of the arched filter screen 3, the swing rod 403, the trapezoidal scraping plate 411 and the guide block 408 are provided in two groups, each group of swing rods 403 is provided with two swing rods 403, the through slot 435 is matched with another swing rod 403, the two groups of swing rods 403 are crosswise arranged, the pressing part comprises a hydraulic cylinder 438 fixedly connected to the inner side of the L-shaped frame 401, a pressing seat 419 is connected to the output end of the hydraulic cylinder 438, an auxiliary seat 445 is fixedly connected to the outer wall of both sides of the pressing seat 419, a push swing rod 417 is rotatably connected to the inner side of the auxiliary seat 445, a push swing plate 410 is fixedly connected to the outer wall of the guide block 408, a connecting push seat 439 is fixedly connected to the inner side of the push swing plate 410, and the push swing rod 417 is rotatably connected to the inner side of the connecting push seat 439.

[0044] In this embodiment: the output end of the hydraulic cylinder 438 drives the pressing seat 419 to move downwardly with the two push swing rods 417, so that the guide block 408 is pushed by the push swing plate 410 to slide on the outer wall of the arched filter screen 3, so that the trapezoidal scraping plate 411 is driven by the rectangular guide block 433 to move on the outer wall of the arched filter screen 3, and the surface of the arched filter screen 3 is cleaned by the top end, when the guide block 408 slides on the outer wall of the arched filter screen 3, the swing rod 403 is driven by the connecting swing seat 409 to rotate through the rotating shaft 404, and then the one end of the torsional spring 430 is driven to rotate, so that the torsional spring 430 is twisted, the swing rod 403 is rotated while driving the scraping plate 434 to rotate, so that the side of the arched filter screen 3 is scraped, so that the arched filter screen 3 is completely cleaned, so that the arched filter screen 3 is prevented from being blocked, and the process does not need manual operation of the staff.

[0045] Please focus on referring to Figures 1-5 The dust suppression assembly comprises a water tank 402 fixedly connected to the outer walls of the two sides of the frame 401, the outer wall of one side of the guide block 408 is fixedly connected with a plurality of support seats 432, the inner side of each of the plurality of support seats 432 is mounted with an atomizing nozzle 431, the water inlet of the atomizing nozzle 431 is connected with a drainage pipe 406, the water inlet of the drainage pipe 406 is fixedly connected with a flexible hose 405, one end of the flexible hose 405 is fixedly connected with the water outlet of the water tank 402.

[0046] In this embodiment: when the atomizing nozzle 431 is started to clean the surface of the arched filter screen 3, the water mist sprayed by the output end of the atomizing nozzle 431 can suppress the dust cleaned by the trapezoidal scraping plate 411, so that the dust does not generate dust again, when the water mist sprayed by the atomizing nozzle 431 is aimed at the surface of the arched filter screen 3, the dust on the surface of the arched filter screen 3 adheres to the top end of the arched filter screen 3, and the dust is cleaned by the scraping of the trapezoidal scraping plate 411, so that the dust on the surface of the arched filter screen 3 is better cleaned.

[0047] Please focus on referring to Figures 1-9The knocking part comprises a knocking block 412 arranged at the top end of the arched filter screen 3, the top end of the knocking block 412 is fixedly connected with a first pulling column 413, the top end of the first pulling column 413 is fixedly connected with a knocking spring 418, the top end of the knocking spring 418 is fixedly connected with the back-shaped frame 401, the inner side of the back-shaped frame 401 is provided with a second pulling column 444, the inner side of the back-shaped frame 401 is fixedly connected with a limiting sleeve ring 437, the limiting sleeve ring 437 is arranged on the outer wall of the second pulling column 444, the top end of the first pulling column 413 is fixedly connected with a first pulling rope 414, one end of the first pulling rope 414 is fixedly connected with the second pulling column 444, the top end of the back-shaped frame 401 is fixedly connected with a first guide seat 416, the inner side of the first guide seat 416 is rotatably connected with a first guide wheel 415, the first pulling rope 414 is attached to the outer wall of the first guide wheel 415, the outer wall of the pressing seat 419 and the outer wall of the second pulling column 444 are provided with a pulling assembly, the outer wall of the hydraulic cylinder 438 and the outer wall of the second pulling column 444 are provided with a defense part, the pulling assembly comprises a guide plate 421 fixedly connected at the top end of the pressing seat 419, one side of the outer wall of the guide plate 421 is fixedly connected with a rectangular guide shell 429, the inner side of the rectangular guide shell 429 is slidably connected with a trapezoidal locking block 440, one end of the trapezoidal locking block 440 penetrates to the outside of the second pulling column 444, the top end of the trapezoidal locking block 440 is provided with an inclined surface 441, the other end of the outer wall of the trapezoidal locking block 440 is fixedly connected with a return spring 442, one end of the return spring 442 is mounted in the inside of the rectangular guide shell 429, the other end of the outer wall of the trapezoidal locking block 440 is fixedly connected with a second pulling rope 426 on the inner side of the return spring 442, one end of the second pulling rope 426 is fixedly connected with the back-shaped frame 401, the top end of the rectangular guide shell 429 is fixedly connected with a second guide seat 428, the inner side of the second guide seat 428 is rotatably connected with a second guide wheel 427, the second pulling rope 426 is attached to the outer wall of the second guide wheel 427, the inner side of the second guide wheel 427 is rotatably connected with a plurality of pressing wheels 443, the plurality of pressing wheels 443 press on the outer wall of the second pulling rope 426, the bottom end of the second pulling column 444 is fixedly connected with a hemispherical block 420, the inside of the second pulling column 444 is provided with a fixing hole matched with the trapezoidal locking block 440, the inside of the rectangular guide shell 429 is provided with a guide groove matched with the trapezoidal locking block 440.

[0048] In this embodiment: when the compression seat 419 approaches the arched filter screen 3, the trapezoidal locking block 440 drives the second pulling column 444 to move synchronously, thereby pulling the first pulling column 413 through the first pulling rope 414, and then pulling the impact block 412 away from the arched filter screen 3 to move. When the trapezoidal locking block 440 moves towards the arched filter screen 3, the second pulling rope 426 is fixed at one end, thereby pulling the trapezoidal locking block 440. When the trapezoidal locking block 440 is pulled out of the fixed hole in the second pulling column 444, the impact spring 418 is no longer subjected to external force to drive the impact block 412 to reset through the first pulling column 413, so that the impact block 412 impacts the outer wall of the arched filter screen 3. Through resonance, the trapezoidal scraping plate 411 vibrates, so that the dust on the surface of the arched filter screen 3 and the surface of the trapezoidal scraping plate 411 falls off, thereby improving the efficiency of cleaning the surface of the arched filter screen 3.

[0049] Please refer to Figure 3 , the defense part includes a conical scraping block 423 fixedly connected to the front end of the hydraulic cylinder 438, the inner side of the conical scraping block 423 is attached to the outer wall of the output end of the hydraulic cylinder 438, the outer wall of the conical scraping block 423 is provided as a tapered surface 425, and the outer wall of one side of the conical scraping block 423 is fixedly connected with a rectangular block 422. The outer wall of one side of the second pulling column 444 is fixedly connected with a rectangular impact plate 424, and the rectangular impact plate 424 is attached to the bottom end of the rectangular block 422.

[0050] In this embodiment: when the output end of the hydraulic cylinder 438 is contracted, the output end is cleaned by the conical scraping block 423, and the dust on the surface is cleaned down, so that the hydraulic cylinder 438 can operate normally. When the first pulling column 413 is reset by the impact spring 418, the first pulling rope 414 is pulled, thereby pulling the second pulling column 444 to reset quickly, and the dust adhering to the output end of the hydraulic cylinder 438 and the dust on the outer wall of the tapered surface 425 are vibrated down by the rectangular impact plate 424 impacting the rectangular block 422.

[0051] The following will combine the above-mentioned mine return air waste heat recovery device to provide a mine return air waste heat recovery method, which specifically includes the following steps:

[0052] S1, first, connect the return air pipe 1 with the corresponding waste heat recovery equipment, when the air inside the mine is filtered by the arched filter screen 3 and enters the inside of the return air pipe 1, the waste heat in the return air inside the mine is utilized by the special waste heat recovery equipment;

[0053] S2, when the surface of the arched filter screen 3 needs to be cleaned, the hydraulic cylinder 438 is started, the output end of the hydraulic cylinder 438 drives the pressing seat 419 to move the two push-and-swing rods 417 downward, so that the push-and-swing plate 410 pushes the guide block 408 to slide on the outer wall of the arched filter screen 3, so that the trapezoidal scraping plate 411 is driven by the rectangular guide block 433 to move on the outer wall of the arched filter screen 3, and the surface of the arched filter screen 3 is cleaned;

[0054] S3, when the guide block 408 slides on the outer wall of the arched filter screen 3, the swing rod 403 is driven by the swing seat 409 to rotate through the rotating shaft 404, and then one end of the torsional spring 430 is driven to rotate, so that the torsional spring 430 is twisted, and the swing rod 403 rotates while driving the scraping plate 434 to rotate, so as to scrape the side surface of the arched filter screen 3;

[0055] S4, when the surface of the arched filter screen 3 needs to be cleaned, the atomizing nozzle 431 is started, the output end of the atomizing nozzle 431 sprays water mist to clean the dust cleaned by the trapezoidal scraping plate 411, so that the dust does not occur again, and when the water mist sprayed by the atomizing nozzle 431 is aimed at the surface of the arched filter screen 3, the dust on the surface of the arched filter screen 3 adheres to the top end of the arched filter screen 3, which is cleaned by the scraping of the trapezoidal scraping plate 411, so as to better clean the dust on the surface of the arched filter screen 3;

[0056] S5, when the pressing seat 419 approaches the arched filter screen 3, the second pulling column 444 is driven to move synchronously by the trapezoidal locking block 440, so that the first pulling column 413 is pulled by the first pulling rope 414, and then the impact block 412 is pulled away from the arched filter screen 3 to move, when the trapezoidal locking block 440 moves towards the arched filter screen 3, one end of the second pulling rope 426 is fixed, so that the trapezoidal locking block 440 is pulled, when the trapezoidal locking block 440 is pulled out of the fixed hole in the second pulling column 444, the impact spring 418 is no longer subjected to the force outside the first pulling column 413, so that the impact block 412 is reset, so that the impact block 412 hits the outer wall of the arched filter screen 3, and the trapezoidal scraping plate 411 is vibrated by resonance, so that the dust on the surface of the arched filter screen 3 and the surface of the trapezoidal scraping plate 411 falls down, thereby improving the cleaning efficiency of the surface of the arched filter screen 3;

[0057] S6, when the output end of the hydraulic cylinder 438 is retracted, the output end is cleaned by the conical scraping block 423, and the dust on the surface is cleaned down, so that the hydraulic cylinder 438 can normally operate. When the impact spring 418 pushes the first pulling column 413 to reset, the first pulling rope 414 is pulled, so that the second pulling column 444 is quickly reset. The rectangular block 422 is impacted by the rectangular impact plate 424, so that the dust adhered to the output end of the hydraulic cylinder 438 and the dust on the outer wall of the conical surface 425 are shaken down.

[0058] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A mine return air waste heat recovery device, comprising a return air pipe (1), characterized in that, One end of the return air pipe (1) is fixedly connected with a wind guide shell (2), an air inlet of the wind guide shell (2) is fixedly connected with an arched filter screen (3), an outer wall of the wind guide shell (2) is fixedly connected with a return-shaped frame (401) through a bolt assembly, an inner side of the return-shaped frame (401) is provided with a scraping mechanism, an upper side of the arched filter screen (3) is provided with a guide block (408), an outer wall of the guide block (408) is provided with a dust pressing assembly, and a top end of the return-shaped frame (401) is provided with a knocking piece extending to a top end of the arched filter screen (3). The scraping mechanism comprises a connecting sleeve (407) fixedly connected to one side of the outer wall of the guide block (408), a rectangular guide block (433) slidably connected inside the connecting sleeve (407), a trapezoidal scraping plate (411) fixedly connected to one end of the rectangular guide block (433) and penetrating through the outer wall of the guide block (408), the trapezoidal scraping plate (411) being attached to the outer wall of the arc-shaped filter screen (3), an adjusting spring (436) fixedly connected to the top end of the rectangular guide block (433), the top end of the adjusting spring (436) being fixedly connected to the connecting sleeve (407), and a compression spring (438) arranged inside the U-shaped frame (401) and at the top end of the guide block (408); the scraping mechanism further comprises a swing rod (403) arranged on the outer wall of the air guide shell (2), a through slot (435) formed in the inner side of the swing rod (403), a rotating shaft (404) fixedly connected to the inner side of the swing rod (403), one end of the rotating shaft (404) being rotatably connected to the air guide shell (2), a torsional spring (430) mounted on one side of the outer wall of the swing rod (403) and outside the rotating shaft (404), one end of the torsional spring (430) being mounted on one side of the outer wall of the air guide shell (2), a swing seat (409) fixedly connected to the outer wall of the guide block (408), one end of the swing seat (409) being fixedly connected to the swing rod (403), and a scraping plate (434) fixedly connected to the inner side of the swing rod (403) and attached to the outer wall of the arc-shaped filter screen (3); the swing rod (403), the trapezoidal scraping plate (411) and the guide block (408) are provided in two groups, each group of the swing rod (403) is provided with two swing rods (403), the through slot (435) is matched with the other swing rod (403), and the two groups of swing rods (403) are arranged in a cross manner; the compression spring (438) comprises a hydraulic cylinder (438) fixedly connected to the inner side of the U-shaped frame (401), an output end of the hydraulic cylinder (438) being connected to a compression seat (419), the outer wall of the compression seat (419) being fixedly connected to an auxiliary seat (445), the inner side of the auxiliary seat (445) being rotatably connected to a swing rod (417), the outer wall of the guide block (408) being fixedly connected to a swing plate (410), the inner side of the swing plate (410) being fixedly connected to a connecting push seat (439), and the inner side of the connecting push seat (439) being rotatably connected to the swing rod (417).

2. The mine return air waste heat recovery device according to claim 1, characterized in that, The dust suppression assembly includes a water tank (402) fixedly connected to the outer walls of the two sides of the back-shaped frame (401), one side of the guide block (408) is fixedly connected with a plurality of support seats (432), the inner sides of the plurality of support seats (432) are each provided with an atomizing nozzle (431), the water inlet of the atomizing nozzle (431) is connected with a drainage pipe (406), the water inlet of the drainage pipe (406) is fixedly connected with a telescopic hose (405), one end of the telescopic hose (405) is fixedly connected with the water outlet of the water tank (402).

3. The mine return air waste heat recovery device according to claim 2, characterized in that, The knocking part includes an impact block (412) arranged at the top end of the arched filter screen (3), the top end of the impact block (412) is fixedly connected with a first pulling column (413), the top end of the first pulling column (413) is fixedly connected with an impact spring (418), the top end of the impact spring (418) is fixedly connected with the back-shaped frame (401), the inner side of the back-shaped frame (401) is provided with a second pulling column (444), the inner side of the back-shaped frame (401) is fixedly connected with a limiting sleeve ring (437), the limiting sleeve ring (437) is arranged on the outer wall of the second pulling column (444), the top end of the first pulling column (413) is fixedly connected with a first pulling rope (414), one end of the first pulling rope (414) is fixedly connected with the second pulling column (444), the top end of the back-shaped frame (401) is fixedly connected with a first guide seat (416), the inner side of the first guide seat (416) is rotatably connected with a first guide wheel (415), the first pulling rope (414) is attached to the outer wall of the first guide wheel (415), the outer wall of the pressing seat (419) and the outer wall of the second pulling column (444) are provided with a pulling assembly, and the outer wall of the hydraulic cylinder (438) and the outer wall of the second pulling column (444) are provided with a defense part.

4. The mine return air waste heat recovery device according to claim 3, characterized in that, The pulling assembly comprises a guide plate (421) fixedly connected to the top end of the compression seat (419), one side outer wall of the guide plate (421) is fixedly connected with a rectangular guide shell (429), the inner side of the rectangular guide shell (429) is slidably connected with a trapezoidal locking block (440), one end of the trapezoidal locking block (440) penetrates to the outside of the second pulling column (444), the top end of the trapezoidal locking block (440) is provided with an inclined surface (441), the other end outer wall of the trapezoidal locking block (440) is fixedly connected with a return spring (442), one end of the return spring (442) is mounted in the inside of the rectangular guide shell (429), the other end outer wall of the trapezoidal locking block (440) is fixedly connected with a second pulling rope (426) on the inside of the return spring (442), one end of the second pulling rope (426) is fixedly connected with the back-shaped frame (401), the top end of the rectangular guide shell (429) is fixedly connected with a second guide seat (428), the inner side of the second guide seat (428) is rotatably connected with a second guide wheel (427), the second pulling rope (426) is attached to the outer wall of the second guide wheel (427), the inner side of the second guide wheel (427) is rotatably connected with a plurality of compression wheels (443), a plurality of the compression wheels (443) are pressed on the outer wall of the second pulling rope (426), and the bottom end of the second pulling column (444) is fixedly connected with a hemispherical block (420).

5. The mine return air waste heat recovery device according to claim 4, characterized in that, The inside of the second pulling column (444) is provided with a fixing hole matched with the trapezoidal locking block (440), and the inside of the rectangular guide shell (429) is provided with a guide groove matched with the trapezoidal locking block (440).

6. The mine return air waste heat recovery device according to claim 5, characterized in that, The defense part comprises a conical scraping block (423) fixedly connected to the front end of the hydraulic cylinder (438), the inner side of the conical scraping block (423) is attached to the outer wall of the output end of the hydraulic cylinder (438), the outer wall of the conical scraping block (423) is provided as a conical surface (425), one side outer wall of the conical scraping block (423) is fixedly connected with a rectangular block (422), one side outer wall of the second pulling column (444) is fixedly connected with a rectangular impact plate (424), and the rectangular impact plate (424) is attached to the bottom end of the rectangular block (422).

7. A mine return air waste heat recovery method, characterized in that, The mine return air waste heat recycling device comprises the following steps: S1, first, the return air pipe (1) is connected with the corresponding waste heat recovery equipment, when the air inside the mine passes through the arched filter screen (3) and enters the inside of the return air pipe (1), the waste heat in the return air of the mine is utilized through the special waste heat recovery equipment. S2, the surface of the arched filter screen (3) is cleaned by the scraping mechanism, and the dust cleaned by the scraping mechanism is treated by the dust suppression assembly to spray water mist to suppress dust, so that the dust is agglomerated, so that the scraping mechanism can better clean the surface of the arched filter screen (3), and the arched filter screen (3) is impacted by the knocking member, so that the dust agglomerated on the surface of the arched filter screen (3) falls off from the surface.

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