CN210700523U

CN210700523U - Multistage coal breaker for thermal power

Info

Publication number: CN210700523U
Application number: CN201920994229.XU
Authority: CN
Inventors: 黄帅; 毛耀伟; 陈允降; 李建明
Original assignee: State Power Investment Group Xiexin Binhai Power Generation Co ltd
Current assignee: State Power Investment Group Xiexin Binhai Power Generation Co ltd
Priority date: 2019-06-28
Filing date: 2019-06-28
Publication date: 2020-06-09
Anticipated expiration: 2029-06-28

Abstract

The utility model discloses a multistage coal breaker is used in thermal power, including first garrulous coal scuttle, mount table and two garrulous coal scuttles of second, it is provided with four support frames to slide on the mount table, and has the conveyer belt through changeing the roller common support for four support frames, fixed mounting has two push rods on the mount table, and two push rods are located same one side of conveyer belt, two the flexible end of push rod respectively with the support frame fixed connection that corresponds, two the second garrulous coal scuttle is located the both sides of conveyer belt respectively. The utility model discloses simple structure, the simple operation utilizes the inertia of coal cinder self to realize the separation of big, little coal cinder, compares in traditional filter screen formula screening, and this device does not have the problem of blockking up the filter screen, does not need frequent maintenance, convenient to use.

Description

Multistage coal breaker for thermal power

Technical Field

The utility model relates to a mechanical equipment technical field for the electricity generation especially relates to a multistage coal breaker for thermal power.

Background

Thermal power generation is a general term for a method of heating water by using heat energy generated when combustible materials are combusted, so that the water is changed into high-temperature and high-pressure steam, and then a generator is driven by the steam to generate power, a power plant using the combustible materials as fuel is generally called as a thermal power plant, and a main equipment system of the thermal power plant comprises: most thermal power plants adopt coal as primary energy, treated coal powder is conveyed to a boiler, the coal powder burns and heats the boiler to change water in the boiler into water vapor, the water vapor enters a high-pressure cylinder after primary heating, and the coal needs to be crushed and rolled in order to improve the thermal efficiency.

The existing coal breaker for thermal power is divided into a hammer type coal breaker and a rod type coal breaker, but two kinds of coal breakers can only finish a coal breaking process, if raw materials are thrown into the coal breaker too fast, most of coal can not be smashed in time and can fall onto a transmission and collection device, and the existing coal breaker uses a filter screen to filter coal blocks with different diameters, so that the problem of filter screen blockage is easily caused, the filter screen needs to be replaced frequently and is cleaned, and therefore the multistage coal breaker for thermal power is provided.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a multistage coal breaker for thermal power generation.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a multistage coal breaker for thermal power, includes first garrulous coal scuttle, mount table and two garrulous coal scuttles of second, it is provided with four support frames to slide on the mount table, and four support frames support jointly through changeing the roller has the conveyer belt, fixed mounting has two push rods on the mount table, and two push rods are located same one side of conveyer belt, two the flexible end of push rod respectively with the support frame fixed connection that corresponds, two the garrulous coal scuttle of second is located the both sides of conveyer belt respectively.

Preferably, two crushing teeth are symmetrically installed in the middle of the first crushed coal box, a feed hopper and a discharge port are respectively arranged on the top and the side wall of the first crushed coal box, the axis of a bottom end port of the feed hopper coincides with the perpendicular bisector of the central line of the two crushing teeth, a screw rod is further arranged in the first crushed coal box, and the discharge port is located below the screw rod.

Preferably, each all rotate in the second garrulous coal case and install a plurality of second crushing rollers, and the pivot of every second crushing roller all runs through the lateral wall and the fixed mounting of corresponding second garrulous coal case near one side of first garrulous coal case.

Preferably, the welding has the fixed plate on the mount table, and installs gear motor through the bolt on the lateral wall of fixed plate, fixed cover is equipped with the driving gear on gear motor's the output shaft, and every driven gear all meshes with the driving gear mutually.

Preferably, the distance between the two crushing teeth is 2cm-6cm, and the distance between the two crushing teeth and the inner side wall of the first coal crushing box is 2cm-4 cm.

The utility model has the advantages that:

1. through setting up devices such as crushing tooth, screw rod, after the raw materials fell to first garrulous coal bin, smash through crushing tooth earlier, the distance between the crushing tooth can be adjusted as required, then the coal charge after smashing fell on the screw rod, the screw rod can produce the shearing force at the in-process with the coal charge transmission, pulverize the coal cinder to the coal charge also can take place to grind each other, further increases the speed of grinding.

2. Through setting up the conveyer belt, the push rod, devices such as the garrulous coal scuttle of second, the conveyer belt is being made a round trip to promote by the push rod at the in-process of transportation coal charge, the direction that the push rod promoted is mutually perpendicular with conveyer belt direction of delivery, because the coal cinder size is different, the quality is different, the inertia of the coal cinder that is heavier relatively is than great, under the round trip promotion of push rod, bold coal charge and minor diameter's coal charge layering, and bold coal charge moves to the conveyer belt both sides gradually, until falling into the garrulous coal scuttle of second, the garrulous coal scuttle of second carries out the regrinding to these coal charges, whole process need not use the filter screen, can not produce the problem.

To sum up, the utility model discloses simple structure, the simple operation utilizes the inertia of coal cinder self to realize the separation of big, little coal cinder, compares in traditional filter screen formula screening, and this device does not have the problem of blockking up the filter screen, does not need frequent maintenance, convenient to use.

Drawings

Fig. 1 is a schematic structural diagram of a multi-stage coal breaker for thermal power generation according to the present invention;

fig. 2 is an enlarged view of a portion a in fig. 1.

In the figure: the device comprises a feed hopper 1, a first crushed coal box 2, a screw rod 3, a mounting table 4, a fixing plate 5, a first crushing roller 6, a second crushing roller 7, a second crushed coal box 8, a push rod 9, a support frame 10, a conveyor belt 11, crushing teeth 12, a driving gear 13 and a driven gear 14.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-2, a multistage coal breaker for thermal power, including first garrulous coal scuttle 2, mount table 4 and two garrulous coal scuttles 8 of second, it is provided with four support frames 10 to slide on the mount table 4, and four support frames 10 support conveyer belt 11 jointly through changeing the roller, fixed mounting has two push rods 9 on the mount table 4, and two push rods 9 are located same one side of conveyer belt 11, the flexible end of two push rods 9 respectively with corresponding support frame 10 fixed connection, two garrulous coal scuttles 8 of second are located the both sides of conveyer belt 11 respectively to be equivalent with the length of conveyer belt 11.

The utility model discloses in, two crushing teeth 12 are installed to the middle part symmetry of first garrulous coal scuttle 2, are provided with feeder hopper 1 and discharge gate on the top of first garrulous coal scuttle 2 and the lateral wall respectively, and the coincidence of the perpendicular bisector of the 12 center lines of tooth is smashed to the bottom port axis of feeder hopper 1 and two, still is equipped with screw rod 3 in the first garrulous coal scuttle 2, and the discharge gate is located screw rod 3's below, realizes the transport of coal charge through screw rod 3, can further grind the coal charge.

All rotate in every second garrulous coal case 8 and install a plurality of second crushing rollers 7, and the pivot of every second crushing roller 7 is close to one side of first garrulous coal case 2 and all runs through the lateral wall and the fixed mounting that correspond second garrulous coal case 8 driven gear 14.

The welding has fixed plate 5 on mount table 4, and installs gear motor 15 through the bolt on the lateral wall of fixed plate 5, and fixed cover is equipped with driving gear 13 on gear motor 15's the output shaft, and every driven gear 14 all meshes with driving gear 13 mutually, rotates through a plurality of crushing rollers of motor drive, can reduce the area of whole device to its complexity has been reduced.

The distance between the two crushing teeth 12 is 2cm-6cm, the distance between the two crushing teeth 12 and the inner side wall of the first crushed coal box 2 is 2cm-4cm, the grinding effect cannot be achieved when the distance between the crushing teeth 12 is too large, and the crushing teeth 12 are likely to be broken when the distance is too small.

The utility model discloses during the use, pour the coal charge into from feeder hopper 1, the lower port of feeder hopper 1 faces the centre of two crushing teeth 12, can make crushing tooth 12 grind the coal charge fast, can fall automatically when the diameter of coal cinder is less than the distance between the crushing tooth 12, carry it to the discharge gate through screw rod 3, can produce the shearing force in the screw rod 3 rotation process, carry out the repulverization to the coal charge, the coal cinder itself can collide with adjacent coal cinder friction in the spiral rotation process simultaneously, has accelerated the grinding speed;

after the coal blocks fall onto the conveyor belt 11 from the discharge port, the friction force between the coal blocks and the conveyor belt 11 drives the coal blocks to move along with the conveyor belt 11, the conveyor belt 11 is pushed back and forth by the push rod 9 in the process of conveying the coal materials, the pushing direction of the push rod 9 is perpendicular to the conveying direction of the conveyor belt 11, because the coal blocks are different in size and different in mass, the inertia of the relatively heavy coal blocks is relatively large, the large coal blocks are layered with the small-diameter coal materials under the back and forth pushing of the push rod 9, the large coal materials gradually move towards the two sides of the conveyor belt 11 until falling into the second crushed coal box 8, and the small-diameter coal materials fall from the end of the conveyor belt 11 and are collected;

a plurality of first crushing rollers 6 and second crushing rollers 7 which are arranged in parallel and symmetrically in the second coal crushing box 8 rotate relatively under the driving of a speed reducing motor 15, so that the large-diameter coal blocks are crushed again, and then are conveyed out through an outlet, and the multiple crushing process of the large-diameter coal blocks is completed.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a multistage coal breaker for thermal power, includes first garrulous coal scuttle (2), mount table (4) and two garrulous coal scuttles of second (8), its characterized in that, it is provided with four support frames (10) to slide on mount table (4), and has conveyer belt (11) through changeing the roller common support in four support frames (10), fixed mounting has two push rods (9) on mount table (4), and two push rods (9) are located same one side of conveyer belt (11), two the flexible end of push rod (9) is respectively with support frame (10) fixed connection who corresponds, two garrulous coal scuttle of second (8) are located the both sides of conveyer belt (11) respectively.

2. The multi-stage coal crusher for thermal power generation according to claim 1, wherein two crushing teeth (12) are symmetrically installed in the middle of the first crushed coal box (2), the top and the side wall of the first crushed coal box (2) are respectively provided with a feed hopper (1) and a discharge port, the bottom port axis of the feed hopper (1) coincides with the perpendicular bisector of the central connecting line of the two crushing teeth (12), a screw (3) is further arranged in the first crushed coal box (2), and the discharge port is located below the screw (3).

3. The multi-stage coal crusher for thermal power generation according to claim 1, wherein a plurality of second crushing rollers (7) are rotatably mounted in each second coal crushing box (8), and one side of a rotating shaft of each second crushing roller (7) close to the first coal crushing box (2) penetrates through a side wall of the corresponding second coal crushing box (8) and is fixedly provided with a driven gear (14).

4. The multi-stage coal crusher for thermal power generation according to claim 3, wherein the mounting table (4) is welded with a fixing plate (5), a speed reduction motor (15) is mounted on the side wall of the fixing plate (5) through a bolt, an output shaft of the speed reduction motor (15) is fixedly sleeved with a driving gear (13), and each driven gear (14) is meshed with the driving gear (13).

5. The multi-stage coal crusher for thermal power generation according to claim 2, characterized in that the distance between the two crushing teeth (12) is 2cm-6cm, and the distance between the two crushing teeth (12) and the inner side wall of the first coal crushing box (2) is 2cm-4 cm.