Novel high-wear-resistance coal crushing equipment for thermal power plant

Abstract

The invention relates to the technical field of thermal power plant equipment, and discloses novel thermal power plant high-wear-resistance coal crushing equipment which comprises a main frame body, and a crushing mechanism is installed on the upper half portion of the main frame body and used for crushing coal; the screening mechanism is arranged in the middle of the main frame body and is used for screening and returning the crushed coal; the dust collecting and briquetting mechanism is mounted below the left side of the main frame body and is used for absorbing coal ash in the crushing process and performing briquetting treatment; the funnel is mounted on one side of the upper part of the main frame body and is used for enabling the coal to enter the crushing mechanism; and the conveying belt is mounted in the screening mechanism, so that the crushed and screened coal is conveyed into the coal cinder box. After the hydraulic rod stretches backwards, compressed coal briquettes are conveyed into the coal briquette box, the device can be used for absorbing coal ash, the compressed coal briquettes can serve as coal fuel to be continuously used, the problem that the coal ash recovery efficiency is low is solved by arranging the dust collecting device, and the working efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of avermectin processing equipment, in particular to a novel high-wear-resistant coal crushing equipment for a thermal power plant. Background Art

[0002] In today's energy production field, thermal power plants still occupy an important position. Coal, as the main fuel of thermal power plants, its crushing is one of the key links in the power generation process.

[0003] Traditional coal crushing equipment has gradually exposed some problems during use. On the one hand, since coal is relatively hard and usually contains certain impurities, it causes serious wear and tear on the crushing equipment, which not only leads to a short service life of the equipment, but also frequent replacement of equipment parts increases production costs and maintenance time, affecting the normal production and operation of thermal power plants. On the other hand, the existing crushing equipment also has certain limitations in the crushing utilization rate of coal, and the coal ash generated in the crushing process cannot be effectively recycled.

[0004] Therefore, the present invention aims to provide a novel highly wear-resistant coal crushing equipment for thermal power plants to improve the deficiencies in the prior art. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a new type of highly wear-resistant coal crushing equipment for thermal power plants, which solves the problem that the current coal crushing equipment is damaged and maintenance affects the coal crushing efficiency of power plants, and the coal ash recovery rate is low.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: A new type of highly wear-resistant coal crushing equipment for thermal power plants, comprising:

[0007] A main frame, wherein a crushing mechanism is installed on the upper part of the main frame for crushing coal;

[0008] A screening mechanism is arranged in the middle of the main frame and is used to screen and return the crushed coal;

[0009] The dust collecting and briquetting mechanism is installed at the lower left side of the main frame and is used to absorb the fly ash in the crushing process and briquette it;

[0010] The hopper is installed on the upper side of the main frame to allow the coal to enter the crushing mechanism;

[0011] The conveyor belt is installed inside the screening mechanism to transport the crushed and screened coal to the ash box to complete the unloading function.

[0012] Preferably, the crushing mechanism includes a double-position crusher and a fixed plate fixedly connected to the middle of the main frame, the double-position crusher is composed of two crushers connected by a U-shaped column, the bottom end of the U-shaped column passes through the fixed plate and is fixedly connected to a rotating gear.

[0013] Preferably, the two crushers inside the double-position crusher are driven by a driving motor, a gear track is installed at the lower part of the fixed plate, and one side of the inner part of the main frame is installed, and the front end of the rod body is fixedly connected to one end of a rack slidably connected inside the gear track, and the rack is meshingly connected to the rotating gear.

[0014] Preferably, the screening mechanism includes a screen and a collection box installed on the lower right side of the screen. The screen is installed in the middle of the main frame, and fixed plates for guiding coal blocks into the collection box are installed around the top.

[0015] Preferably, a vibration motor for generating vibration is installed on one side of the screen, the collecting box is connected to a reflux device installed on the right side inside the main frame, the discharge port at the top of the reflux device is arranged at the upper part of the crusher in the double-position crusher, and the ash box is installed on the lower right side of the main frame for receiving the screened material.

[0016] Preferably, the dust collecting and pressing mechanism includes a vacuum cleaner installed on the upper part of one side of the main frame, a dust box is installed at the lower part of the vacuum cleaner, an exhaust fan and a filter are installed at the vent of the vacuum cleaner, a compression groove is installed inside the dust box, the vacuum cleaner is connected with the compression groove through a feed pipe, and a hydraulic pusher is installed inside the dust box.

[0017] Preferably, a compression block is installed on the push rod at the front end of the hydraulic pusher, and the compression block is slidably installed inside the compression groove to compress the material delivered from the material guide pipe. Limiting bars are installed on the upper and lower parts of the left side of the dust collecting box, and a baffle is slidably connected between the two limiting bars. A hydraulic rod is installed on the front left side of the dust collecting box, and the front end of the hydraulic rod body is fixedly connected to one end of the baffle.

[0018] Preferably, the funnel is installed on the top of the main frame, and the conveyor belt is installed at the bottom of the main frame to transport coal slag.

[0019] Working principle: When the present invention is used, it specifically includes the following operating steps:

[0020] Step 1: Coal loading: First, it is transported to the hopper, and then fed into the crusher through an external machine, and then the crushing work begins:

[0021] The second step is coal crushing: entering the work of the crushing mechanism, first, after starting the motor, as the motor rotates, the gears in the crusher rotate accordingly, the gears and teeth in the machine bite each other, drive the crushing roller to operate, and the first crushing work begins. The first crushing work crushes the larger coal first. In the double-position crusher, one of them is in operation and the other is on standby. At the bottom of the double-position crusher, an exchange device is installed. The rack in the gear track is pushed by the first hydraulic rod to move, driving the gear to rotate. As the gear rotates, the U-shaped column on the fixed plate is driven to rotate, and the crusher is exchanged by the rotation of the gear. The gear track includes two devices, the track and the rack. The fixed plate limits the rotating gear and the gear track to prevent deflection;

[0022] The third step is to screen the newly crushed coal. In the screening mechanism, the size of the screen grid determines which coal needs to be screened. In the screen, a vibration motor is installed to vibrate the screen to screen the crushed coal. The coal screened from the screen can be sent to the coal slag box along the conveyor belt under the screen to obtain completely crushed coal.

[0023] The fourth step is to consider that the first screening may not be efficient. In the lower left corner of the screen, a coal slag box is made to hold the coal that was not completely crushed in the first crushing. Then the coal is crushed again through the reflux device. The reflux device will send the coal blocks to the crusher for secondary crushing. Then the crushed coal blocks will be screened by the screen and enter the conveyor belt, and finally return to the coal slag box.

[0024] The fifth step is to take into account that coal ash and other substances will be produced during the crushing and screening process. A dust collecting and briquetting mechanism is installed, and a vacuum cleaner is installed between the double-position crusher and the screen. The coal ash enters the pipeline through the vacuum cleaner, and then passes through to concentrate the coal ash in the compression groove. At the outlet of the compression groove, a baffle is installed to block the coal ash for compression. A second hydraulic rod is also installed on the baffle device, and the baffle is limited by a limit bar. After a sufficient amount of coal ash enters the compression groove, the hydraulic pusher drives the compression block to start working. After the compression is completed, the second hydraulic rod retracts backward, so that the baffle moves synchronously to expose the outlet, and the compressed coal blocks are sent to the coal block box. This device can be used to absorb coal ash and continue to use the compressed coal blocks as a kind of coal fuel, thereby improving work efficiency.

[0025] The present invention provides a new type of highly wear-resistant coal crushing equipment for thermal power plants. It has the following beneficial effects:

[0026] 1. The present invention solves the problem that when a crusher needs to be repaired due to damage, one of the crushers is in operation while the other is on standby. A switching device is installed at the bottom of the double-position crusher. The rack in the gear track is pushed to move by the first hydraulic rod to drive the gear to rotate. As the gear rotates, the U-shaped column on the fixed plate is driven to rotate. The crusher is exchanged by the rotation of the gear, and then the rotating gear and the gear track are limited together by the fixed plate to prevent deflection.

[0027] 2. The present invention solves the problem of low crushing efficiency after the coal is crushed by setting a screening mechanism. A screening device is installed inside the main frame. In the screening mechanism, the size of the screen grid determines which coal needs to be screened. In the screen, a vibration motor is installed to vibrate the screen to screen the crushed coal. The coal screened from the screen can be sent to the slag box along the conveyor belt under the screen to obtain completely crushed coal.

[0028] 3. The present invention solves the problem of low coal ash recovery efficiency by setting up a dust collecting mechanism. By installing a dust collecting and briquetting mechanism device, a vacuum cleaner is installed between the double-position crusher and the screen. The coal ash enters the pipeline through the vacuum cleaner and falls into the dust collecting box. After a sufficient amount of coal ash enters the compression groove, the hydraulic pusher drives the compression block to start working. After the compression is completed, the second hydraulic rod retracts backward, so that the baffle moves synchronously to expose the outlet, and the compressed coal blocks are sent to the coal block box. This device can be used to absorb coal ash and the compressed coal blocks can continue to be used as a kind of coal fuel, thereby improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a main structural stereogram of the present invention;

[0030] Figure 2 It is a schematic diagram of the right structure of the present invention;

[0031] Figure 3 It is a schematic diagram of the rear structure of the present invention;

[0032] Figure 4 It is a schematic diagram of the screening mechanism structure of the present invention;

[0033] Figure 5 It is a schematic diagram of the structure of the reflux device of the present invention;

[0034] Figure 6 It is a schematic diagram of the top view structure of the present invention;

[0035] Figure 7 It is a schematic diagram of the installation position structure of the double-position crusher of the present invention;

[0036] Figure 8It is a schematic diagram of the internal structure of the dust collecting briquetting mechanism of the present invention.

[0037] Among them, 1. main frame; 2. crushing mechanism; 201. double-position crusher; 202. rotating gear; 203. gear track; 204. fixed plate; 205. U-shaped column; 206. driving motor; 207. first hydraulic rod; 3. screening mechanism; 301. screen; 302. collecting box; 303. reflux device; 304. coal ash box; 305. vibration motor; 4. dust collecting and briquetting mechanism; 401. dust collector; 402. dust collecting box; 403. compression trough; 404. coal block box; 405. feed pipe; 406. limit strip; 407. hydraulic pusher; 408. compression block; 409. baffle; 410. second hydraulic rod; 5. funnel; 6. conveyor belt. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] Please refer to the attached Figure 1 -Attached Figure 8 The embodiment of the present invention provides a new type of highly wear-resistant coal crushing equipment for thermal power plants, including:

[0040] A main frame 1 is provided with a crushing mechanism 2 installed on the upper part of the main frame 1, which is used for crushing coal. The crushing mechanism 2 includes a double-position crusher 201 and a fixed plate 204 fixedly connected to the middle part of the main frame 1. The double-position crusher 201 is composed of two crushers connected by a U-shaped column 205. The bottom end of the U-shaped column 205 passes through the fixed plate 204 and is fixedly connected to a rotating gear 202.

[0041] The two crushers inside the double-position crusher 201 are driven by a driving motor 206. A gear track 203 is installed at the lower part of the fixed plate 204. A first hydraulic rod 207 is installed at one side inside the main frame 1. The front end of the rod body of the first hydraulic rod 207 is fixedly connected to one end of a rack that is slidably connected inside the gear track 203, and the rack is meshed with the rotating gear 202.

[0042] Specifically, coal crushing: entering the work of the crushing mechanism 2, first, after starting the motor, as the motor rotates, the gears in the crusher rotate accordingly, the gears and teeth in the machine mesh with each other, driving the crushing roller to operate, and the first crushing work begins. The first crushing work crushes the larger coal first, the double-position crusher 201, one of which is in operation, and the other is on standby. At the bottom of the double-position crusher 201, an exchange device is installed. The rack in the gear track 203 is pushed to move by the first hydraulic rod 207, driving the rotating gear 202 to rotate. As the rotating gear 202 rotates, the U-shaped column 205 on the fixed plate 204 is driven to rotate to exchange the crushers. The gear track 203 includes two devices, a track and a rack. Then the fixed plate 204 is used to limit the rotating gear 202 and the gear track 203 to prevent deviation.

[0043] The screening mechanism 3 is arranged in the middle of the main frame 1, and is used for screening and returning the crushed coal. The screening mechanism 3 includes a screen 301 and a collecting box 302 installed on the lower right side of the screen 301. The screen 301 is installed in the middle of the main frame 1, and fixed plates 204 are installed around the top thereof for guiding coal blocks into the collecting box 302.

[0044] A vibration motor 305 for generating vibration is installed on one side of the screen 301, and the collection box 302 is connected to the reflux device 303 installed on the right side inside the main frame 1. The discharge port on the top of the reflux device 303 is set on the upper part of the crusher in the double-position crusher 201. The slag box 304 is installed on the lower right side of the main frame 1 to receive the screened materials.

[0045] Specifically, in the screening mechanism 3, the grid size of the screen 301 determines which coal needs to be screened. In the screen 301, a vibration motor 305 is installed to vibrate the screen 301 to screen the crushed coal. The coal screened from the screen 301 can be sent to the slag box 304 along the conveyor belt 6 under the screen 301 to obtain completely crushed coal. Considering that the first screening may not be efficient, a slag box 304 is made in the lower left corner of the screen 301 to hold the coal that is not completely crushed in the first crushing, and then the reflux device 303 is used for secondary crushing. The reflux device 303 will send the coal blocks to the crusher for secondary crushing; then the crushed coal blocks will also enter the conveyor belt 6 after screening with the screen 301, and finally return to the slag box 304.

[0046] The dust collecting and briquetting mechanism 4 is installed at the lower left side of the main frame 1, and is used to absorb the coal ash in the crushing process and perform briquetting. The dust collecting and briquetting mechanism 4 includes a dust collector 401 installed at the upper part of one side of the main frame 1, and a dust collecting box 402 is installed at the lower part of the dust collector 401. A coal block box 404 is installed at the lower left side of the main frame (1). The dust collector 401 is equipped with an exhaust fan and a filter at the vent, and a compression groove 403 is installed inside the dust collecting box 402. The dust collector 401 is connected to the compression groove 403 through a feed pipe 405, and a hydraulic pusher 407 is installed inside the dust collecting box 402.

[0047] A compression block 408 is installed on the push rod at the front end of the hydraulic pusher 407. The compression block 408 is slidably installed inside the compression groove 403 to compress the material delivered from the feed pipe 405. Limiting bars 406 are installed on the upper and lower parts of the left side of the dust box 402. A baffle 409 is slidably connected between the two limiting bars 406. A second hydraulic rod 410 is installed on the front left side of the dust box 402. The front end of the rod body of the second hydraulic rod 410 is fixedly connected to one end of the baffle 409.

[0048] Specifically: Considering that coal ash and other substances will be generated during the crushing and screening process, a dust collecting and briquetting mechanism 4 is installed, and a dust collector 401 is installed between the double-position crusher 201 and the screen 301. The coal ash enters the pipeline through the dust collector 401, and then passes through the feed pipe 405 to collect the coal ash in the compression tank 403. At the outlet of the compression tank 403, a baffle 409 is installed to block the coal ash and compress it. A second hydraulic rod 409 is also installed on the baffle 409. 10. The baffle 409 is limited by the limit bar 406. After a sufficient amount of coal ash enters the compression groove 403, the hydraulic pusher 407 drives the compression block 408 to start working. After the compression is completed, the second hydraulic rod 410 extends and retracts backwards, so that the baffle 409 moves synchronously to expose the outlet. The compressed coal blocks are then sent to the coal block box 404 through the compression block 408. This device can be used to absorb coal ash and can also continue to use the compressed coal blocks as a kind of coal fuel, thereby improving work efficiency.

[0049] A hopper 5 is mounted on one side of the upper portion of the main frame 1 to allow coal to enter the crushing mechanism 2;

[0050] The conveyor belt 6 is installed inside the screening mechanism 3 to transport the coal after crushing and screening to the slag box 304 to complete the unloading function. The funnel 5 is installed on the top of the main frame 1, and the conveyor belt 6 is installed at the bottom of the main frame 1 to transport the slag.

[0051] Specifically, the funnel 5 is in a form of being larger at the top and smaller at the bottom, and its purpose is to improve the efficiency of conveying materials. The conveyor belt 6 is under the screen 301, and its purpose is to improve the efficiency of conveying crushed coal slag.

[0052] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A new type of highly wear-resistant coal crushing equipment for thermal power plants, characterized in that: include: A main frame (1), wherein a crushing mechanism (2) is installed on the upper part of the main frame (1) for crushing coal; A screening mechanism (3) is arranged in the middle of the main frame (1) and is used for screening and returning the crushed coal; A dust collecting and briquetting mechanism (4) is installed at the lower left side of the main frame (1) and is used to absorb the coal ash in the crushing process and perform briquetting; A hopper (5) is mounted on one side of the upper portion of the main frame (1) to allow coal to enter the crushing mechanism (2); The conveyor belt (6) is installed inside the screening mechanism (3) to transport the coal after crushing and screening to the coal ash box (304) to complete the unloading function.

2. A new type of highly wear-resistant coal crushing equipment for thermal power plants according to claim 1, characterized in that: The crushing mechanism (2) comprises a double-position crusher (201) and a fixed plate (204) fixedly connected to the middle of the main frame (1); the double-position crusher (201) is composed of two crushers connected by a U-shaped column (205); the bottom end of the U-shaped column (205) passes through the fixed plate (204) and is fixedly connected to a rotating gear (202).

3. The new type of highly wear-resistant coal crushing equipment for thermal power plants according to claim 2 is characterized in that: The two crushers inside the double-position crusher (201) are driven by a driving motor (206), a gear track (203) is installed at the lower part of the fixed plate (204), and a first hydraulic rod (207) is installed on one side inside the main frame (1), and the front end of the rod body of the first hydraulic rod (207) is fixedly connected to one end of a rack slidably connected inside the gear track (203), and the rack is meshed with the rotating gear (202).

4. The new type of highly wear-resistant coal crushing equipment for thermal power plants according to claim 1 is characterized in that: The screening mechanism (3) comprises a screen (301) and a collection box (302) installed on the lower right side of the screen (301); the screen (301) is installed in the middle of the main frame (1), and fixed plates (204) are installed around the top of the screen for guiding coal blocks into the collection box (302).

5. The new type of highly wear-resistant coal crushing equipment for thermal power plants according to claim 4 is characterized in that: A vibration motor (305) for generating vibration is installed on one side of the screen (301); the collection box (302) is connected to a reflux device (303) installed on the right side inside the main frame (1); the discharge port on the top of the reflux device (303) is arranged on the upper part of the crusher in the double-position crusher (201); and the ash box (304) is installed on the lower right side of the main frame (1) for receiving the screened material.

6. The new type of highly wear-resistant coal crushing equipment for thermal power plants according to claim 1 is characterized in that: The dust collecting and briquetting mechanism (4) comprises a dust collector (401) installed on the upper part of one side of the main frame (1); a dust collecting box (402) is installed at the lower part of the dust collector (401); a coal block box (404) is installed on the lower left side of the main frame (1); an exhaust fan and a filter are installed at the ventilation port of the dust collector (401); a compression groove (403) is installed inside the dust collecting box (402); the dust collector (401) is connected to the compression groove (403) through a feed pipe (405); and a hydraulic pusher (407) is installed inside the dust collecting box (402).

7. The novel high wear-resistant coal crushing equipment for thermal power plants according to claim 6 is characterized in that: A compression block (408) is installed on the push rod at the front end of the hydraulic pusher (407). The compression block (408) is slidably installed inside the compression groove (403) to compress the material delivered from the feed pipe (405). Limiting bars (406) are installed on the upper and lower parts of the left side of the dust collecting box (402). A baffle (409) is slidably connected between the two limiting bars (406). A second hydraulic rod (410) is installed on the front part of the left side of the dust collecting box (402), and the front end of the rod body of the second hydraulic rod (410) is fixedly connected to one end of the baffle (409).

8. The new type of highly wear-resistant coal crushing equipment for thermal power plants according to claim 1 is characterized in that: The funnel (5) is installed on the top of the main frame (1), and the conveyor belt (6) is installed at the bottom of the main frame (1) to transport coal slag.

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