CN219252799U - Ash Conveying System Ash Block Crusher - Google Patents

Abstract

The utility model discloses an ash block crusher of an ash conveying system, which comprises an ash hopper of a desulfurizing tower, a screen, a fly cutter mechanism and a power device; the screen is positioned below the ash bucket of the desulfurizing tower and is horizontally arranged; the fly cutter mechanism is arranged between the ash bucket of the desulfurizing tower and the screen, the middle part of the fly cutter mechanism is connected with the rotating shaft, the cutter blades of the fly cutter mechanism are obliquely upwards arranged from the middle part to the periphery of the fly cutter mechanism, and the cutter edge surfaces of the cutter blades form an included angle of 44-46 degrees with the screen; the power device is connected with the rotating shaft of the fly cutter mechanism. According to the utility model, as the knife edge surface of the three-blade diamond fly knife forms a certain included angle with the sieve plate, the three-blade diamond fly knife can help to convey materials while crushing; the bearing seat is designed in the pipeline, is fully sealed, and the motor is arranged outside the pipeline, so that the maintenance and the overhaul are convenient; the bearing pedestal is provided with a ventilation cooling device, so that the cooling of the bearing is ensured.

Description

Ash Conveying System Ash Block Crusher

technical field

The utility model relates to the technical field of the ash conveying system of a power plant, in particular to an ash block pulverizer of the ash conveying system.

Background technique

With the implementation of my country's sustainable development strategy and the development of environmental protection and comprehensive utilization of fly ash, the pneumatic ash conveying technology in coal-fired power plants has been widely used. In the ash conveying system of a power plant, it is necessary to pulverize the coal, and then transport the fly ash with gas through the ash pump, such as a kind of pneumatic ash conveying system of a thermal power plant disclosed by the Chinese Publication No. CN110217598B, the pulverized fly ash First enter the dust bin, the outlet of the dust bin is connected to the bin pump through the main pipe, and the gas outlet of the bin pump is connected to the ash storage through the other end of the main pipe. In the prior art, the fly ash cannot be transported while crushing.

Utility model content

The utility model provides an ash block pulverizer in an ash conveying system, and aims to solve one of the technical problems: in the prior art, the technical problem that the fly ash cannot be transported in the gas phase while crushing.

Considering the above-mentioned problems of the prior art, according to one aspect disclosed by the utility model, the utility model adopts the following technical solutions:

An ash conveying system ash block pulverizer, which includes:

Desulfurization tower ash hopper;

a screen, which is located below the ash hopper of the desulfurization tower and arranged horizontally;

Flying knife mechanism, which is arranged between the ash hopper of the desulfurization tower and the screen, the middle part of the flying knife mechanism is connected to the rotating shaft, and the blade of the flying knife mechanism is cut from the middle part to the surrounding of the flying knife mechanism. It is arranged obliquely upward, and the knife-edge surface of the blade and the screen are at an angle of 44-46 degrees;

The power device is connected with the rotating shaft of the flying knife mechanism.

In order to realize the utility model better, further technical scheme is:

Further, it also includes:

The bearing seat is fixedly arranged under the screen, and the lower end of the rotating shaft passes through the bearing seat.

Further, the bearing seat is a flange double bearing seat.

Further, it also includes:

The inner sealing shell is arranged outside the bearing seat and seals the bearing seat and the lower end of the rotating shaft.

Further, the lower end of the rotating shaft is connected with the power device through a belt transmission mechanism.

Further, the power device is arranged outside the pulverizer housing, the belt transmission mechanism passes through the inner sealing housing, and the belt transmission mechanism located between the pulverizer housing and the inner sealing housing A sealing baffle is arranged around the mechanism.

Further, the power device is a motor.

Further, the lower part of the inner sealing case is connected to the air intake pipe, and the upper part of the inner sealing case is connected to the air outlet pipe.

Further, an ash hopper gate valve is provided at the bottom of the ash hopper of the desulfurization tower.

Further, a discharge valve is provided at the bottom of the shredder housing.

Compared with the prior art, one of the beneficial effects of the utility model is:

The utility model is a kind of ash block pulverizer with ash conveying system. The knife-edge surface of the three-leaf rhombic flying knife and the sieve plate form an included angle of 45 degrees, which helps the material to be transported while crushing; The particle size of the material; the bearing seat is designed in the pipeline, fully sealed, and the motor is outside the pipeline, which is convenient for maintenance and repair; the bearing seat has a ventilation cooling device to ensure the cooling of the bearing.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiment of the present application document or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiment or the prior art. Apparently, the accompanying drawings in the following description The drawings are only references to some embodiments in the present application documents, and those skilled in the art can also obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of an ash block pulverizer in an ash conveying system according to an embodiment of the present invention.

Wherein, the accompanying drawing names corresponding to the reference signs are:

1- Ash hopper of desulfurization tower, 2- Flying knife mechanism, 3- Screen, 4- Bearing seat, 5- Inner sealing shell, 6- Pulverizer shell, 7- Motor, 8- Air intake pipe, 9- Ash hopper Gate valve, 10-unloading valve, 11-ash pump.

Detailed ways

The utility model will be described in further detail below in conjunction with the examples, but the implementation of the utility model is not limited thereto.

Referring to shown in Fig. 1, a kind of ash conveying system ash pulverizer, it comprises:

Desulfurization tower ash hopper 1;

A screen 3, which is located below the ash hopper 1 of the desulfurization tower, and is arranged horizontally;

Flying knife mechanism 2, which is arranged between the ash bucket 1 of the desulfurization tower and the screen 3, the middle part of the flying knife mechanism 2 is connected to the rotating shaft, and the blade of the flying knife mechanism 2 moves from the flying knife mechanism 2. The middle part to the surroundings are arranged obliquely upwards, and the blade surface of the blade and the screen 3 form an angle of 44-46 degrees;

Power device, it is connected with the rotating shaft of described flying knife mechanism 2.

In the above scheme, the coal to be broken enters the area where the flying knife mechanism 2 is located from the desulfurization tower ash hopper 1, and the flying knife mechanism 2 rotates to crush it. The included angle makes the flying knife mechanism 2 not only pulverize the coal, but also transport the pulverized coal ash. The pulverized coal ash is sieved through the screen 3, and then enters the ash pump 11 at the lower part after sieving, and then flows to the next step of the ash conveying system.

A preferred solution of the included angle between the knife-edge surface of the blade and the screen 3 is 45°.

A bearing seat 4 can be provided to cooperate with the rotating shaft of the flying knife mechanism 2. The bearing seat 4 is fixedly arranged below the screen 3, and the lower end of the rotating shaft runs through the bearing seat 4. The bearing seat 4 is preferably a flange double bearing seat.

The lower end of the rotating shaft is connected with the power device through a belt transmission mechanism. The utility model includes but is not limited to a belt transmission mechanism, and other power transmission methods can also be used to achieve equivalent replacement.

The inner sealing shell 5 is arranged on the outer side of the bearing seat 4, and the inner sealing shell 5 seals the bearing seat 4 and the lower end of the rotating shaft to prevent dust from entering the inside and causing equipment failure.

In Fig. 1, the power device is arranged on the outside of the pulverizer housing 6, the belt transmission mechanism passes through the inner sealing housing 5, and all the parts between the pulverizer housing 6 and the inner sealing housing 5 A sealing baffle is arranged on the periphery of the belt transmission mechanism. In this embodiment, it is equivalent to setting an opening for the belt to pass through on the inner sealing shell 5 , and then setting a ring of sealing baffles on the edge of the opening, and the sealing baffles extend to the pulverizer shell 6 .

Above-mentioned power device can adopt motor 7, but the utility model is not limited thereto.

In order to dissipate heat from the bearing seat 4 and the rotating shaft, an air intake pipe 8 can be connected to the lower part of the inner sealing case 5, and an air outlet pipe can be connected to the upper part of the inner sealing case 5, and then air is supplied and dissipated by the air cooling system.

And an ash hopper gate valve 9 can be set at the bottom of the ash hopper 1 of the desulfurization tower to control the feeding of coal.

A discharge valve 10 may be provided at the bottom of the pulverizer housing 6 to control the delivery of fly ash.

In summary, the utility model is a crushing device specially designed for the ash conveying system, mainly used in the ash conveying system of the power plant, such as the discharge port of the dust collector, the discharge port of the desulfurization device, the discharge port of the ash storage, etc. The technical points of the design: 1) The knife-edge surface of the three-leaf diamond-shaped flying knife forms an angle of 45 degrees with the sieve plate, which helps the material to be conveyed while crushing. 2) The hole diameter of the sieve plate is designed according to the requirements of the material, which can control the particle size of the material. 3) The bearing seat is designed in the pipeline, fully sealed, and the motor is outside the pipeline, which is convenient for maintenance and repair. 4) The shape of the equipment is circular, and the diameter of the inlet and outlet is the same as that of the pipeline. The flow direction of the material in the crusher is the same as that of the pipeline, so that the material is crushed during the conveying flow, which is convenient for on-site installation and free from positional defects. 5) The bearing seat has a ventilation cooling device to ensure the cooling of the bearing. The bearing seat has an oil filler to ensure the lubrication of the bearing.

Each embodiment in this specification is described in a progressive manner, each embodiment focuses on the difference from other embodiments, and the same and similar parts of each embodiment can be referred to each other.

References in this specification to "one embodiment", "another embodiment", "embodiment", etc. refer to the specific features, structures or characteristics described in conjunction with the embodiment included in the general description of this application. In at least one embodiment of . The appearance of the same expression in multiple places in the specification does not necessarily refer to the same embodiment. Furthermore, when a specific feature, structure or characteristic is described in combination with any embodiment, it should be claimed that realizing such feature, structure or characteristic in combination with other embodiments also falls within the scope of the present invention.

Although the invention has been described herein with reference to a number of illustrative embodiments of the invention, it should be understood that many other modifications and implementations can be devised by those skilled in the art which will fall within the scope of this application. within the scope and spirit of the principles disclosed. More specifically, within the scope of the disclosure and claims of the present application, various modifications and improvements can be made to the components and/or layout of the subject combination layout. In addition to modifications and improvements in component parts and/or layout, other uses will be apparent to those skilled in the art.

Claims (10)

1. A kind of ash conveying system ash pulverizer, it is characterized in that comprising: Desulfurization tower ash hopper (1); A screen (3), which is located below the ash hopper (1) of the desulfurization tower, and is arranged horizontally; A flying knife mechanism (2), which is arranged between the ash hopper (1) of the desulfurization tower and the screen (3), the middle part of the flying knife mechanism (2) is connected to the rotating shaft, and the flying knife mechanism (2) ) blades are arranged obliquely upwards from the middle of the flying knife mechanism (2) to the surroundings, and the blade surface of the blades is at an angle of 44-46 degrees with the screen (3); A power device is connected with the rotating shaft of the flying knife mechanism (2). 2. The ash block pulverizer of the ash conveying system according to claim 1, further comprising: The bearing seat (4) is fixedly arranged under the screen (3), and the lower end of the rotating shaft passes through the bearing seat (4). 3. The ash block pulverizer of the ash conveying system according to claim 2, characterized in that the bearing seat (4) is a flange double bearing seat. 4. The ash block pulverizer of the ash conveying system according to claim 2 or 3, further comprising: The inner sealing shell (5), which is arranged outside the bearing seat (4), seals the bearing seat (4) and one end of the rotating shaft. 5. The ash block pulverizer of the ash conveying system according to claim 4, characterized in that one end of the rotating shaft is connected to the power device through a belt transmission mechanism. 6. The ash block pulverizer of the ash conveying system according to claim 5, characterized in that the power device is arranged outside the pulverizer housing (6), and the belt transmission mechanism passes through the inner sealed housing (5 ), a sealing baffle is arranged on the periphery of the belt transmission mechanism between the pulverizer housing (6) and the inner sealing housing (5). 7. The ash block pulverizer of the ash conveying system according to claim 6, characterized in that the power device is a motor (7). 8. The ash block pulverizer of the ash conveying system according to claim 6, characterized in that the lower part of the inner sealed casing (5) is connected to the air inlet pipe (8), and the upper part of the inner sealed casing (5) is connected to the air outlet pipe . 9. The ash block crusher in the ash conveying system according to claim 6, characterized in that an ash hopper gate valve (9) is provided at the bottom of the desulfurization tower ash hopper (1). 10. The ash block pulverizer of the ash conveying system according to claim 6, characterized in that a discharge valve (10) is provided at the bottom of the pulverizer housing (6).

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