CN219252799U

CN219252799U - Ash block crusher of ash conveying system

Info

Publication number: CN219252799U
Application number: CN202223316662.9U
Authority: CN
Inventors: 梅林�; 郑钢; 丁春伟; 丁俐强
Original assignee: Sichuan Langjiu Co ltd; Sichuan Guoneng Power Environmental Protection Equipment Manufacturing Co ltd
Current assignee: Sichuan Langjiu Co ltd; Sichuan Guoneng Power Environmental Protection Equipment Manufacturing Co ltd
Priority date: 2022-12-07
Filing date: 2022-12-07
Publication date: 2023-06-27
Anticipated expiration: 2032-12-07

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 block crusher of ash conveying system

Technical Field

The utility model relates to the technical field of ash conveying systems of power plants, in particular to an ash block crusher of an ash conveying system.

Background

With the implementation of sustainable development strategy and the development of environmental protection and comprehensive utilization of fly ash in China, the pneumatic ash conveying technology of coal-fired power plants is widely applied. In the ash conveying system of the power plant, after coal blocks are crushed, the coal ash is conveyed by gas through an ash pump, for example, the pneumatic ash conveying system of the power plant disclosed in China publication No. CN110217598B, wherein the crushed coal ash firstly enters a dust bin, a discharge hole of the dust bin is connected with a bin pump through a main pipe, and an air outlet of the bin pump is connected with an ash storage bin through another main pipe. In the prior art, the pulverized fuel ash cannot be helped to carry out material conveying while being crushed.

Disclosure of Invention

The utility model provides an ash block crusher of an ash conveying system, which aims to solve one of the technical problems that: the technical problem that the pulverized fuel ash cannot be helped to carry out gas-phase conveying of materials while being crushed in the prior art.

In view of the foregoing problems of the prior art, according to one aspect of the disclosure, the present utility model adopts the following technical solutions:

an ash block pulverizer of an ash conveying system, comprising:

an ash bucket of the desulfurizing tower;

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;

and the power device is connected with the rotating shaft of the fly cutter mechanism.

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

further, the method further comprises the following steps:

the bearing seat is fixedly arranged below the screen, and the lower end of the rotating shaft penetrates through the bearing seat.

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

Further, the method further comprises the following steps:

and the inner sealing shell is arranged on the outer side of 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 on the outer side of the crusher shell, the belt transmission mechanism penetrates through the inner sealing shell, and a sealing baffle is arranged on the periphery of the belt transmission mechanism between the crusher shell and the inner sealing shell.

Further, the power device is a motor.

Further, the lower part of the inner sealing shell is connected with an air inlet pipe, and the upper part of the inner sealing shell is connected with an air outlet pipe.

Further, an ash bucket gate valve is arranged at the bottom of the ash bucket of the desulfurizing tower.

Further, a discharge valve is arranged at the bottom of the shell of the pulverizer.

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

according to the ash conveying system ash block crusher, the included angle of 45 degrees is formed between the edge surface of the three-blade diamond fly cutter and the sieve plate, so that the material conveying is facilitated while the crushing is performed; the sieve plate holes are designed with apertures according to the material requirements, so that the particle size of the material can be controlled; 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.

Drawings

For a clearer description of embodiments of the present application or of solutions in the prior art, reference will be made below to the accompanying drawings, which are used in the description of embodiments or of the prior art, it being apparent that the drawings in the description below are only references to some embodiments of the present application, from which other drawings can be obtained, without inventive effort, for a person skilled in the art.

Fig. 1 is a schematic view illustrating a construction of an ash block crusher of an ash conveying system according to an embodiment of the utility model.

Wherein, the drawing names corresponding to the reference numerals are as follows:

the device comprises a 1-desulfurizing tower ash hopper, a 2-fly cutter mechanism, a 3-screen, a 4-bearing seat, a 5-inner sealing shell, a 6-pulverizer shell, a 7-motor, an 8-air inlet pipe, a 9-ash hopper gate valve, a 10-discharge valve and an 11-ash pump.

Detailed Description

The present utility model will be described in further detail with reference to examples, but embodiments of the present utility model are not limited thereto.

Referring to fig. 1, an ash block crusher of an ash conveying system, comprising:

a desulfurizing tower ash bucket 1;

a screen 3 which is positioned below the desulfurizing tower ash bucket 1 and is horizontally arranged;

the fly cutter mechanism 2 is arranged between the ash bucket 1 of the desulfurizing tower and the screen 3, the middle part of the fly cutter mechanism 2 is connected with a rotating shaft, cutter blades of the fly cutter mechanism 2 are obliquely upwards arranged from the middle part to the periphery of the fly cutter mechanism 2, and the cutter edge surfaces of the cutter blades form an included angle of 44-46 degrees with the screen 3;

and the power device is connected with the rotating shaft of the fly cutter mechanism 2.

In the above scheme, the coal to be crushed enters the area where the fly cutter mechanism 2 is located through the desulfurizing tower ash bucket 1, and the fly cutter mechanism 2 rotates to crush the coal, and the fly cutter mechanism 2 not only can crush the coal, but also can play a role in conveying crushed coal ash due to the fact that the knife edge surface of the knife blade forms an included angle of 44-46 degrees with the screen 3. The crushed coal ash is screened by the screen 3, enters the ash pump 11 at the lower part after screening, and then flows to the next working procedure of the ash conveying system.

A preferred embodiment of the angle between the edge surface of the blade and said screen 3 is 45 °.

The bearing seat 4 can be arranged to match the rotating shaft of the fly cutter mechanism 2, the bearing seat 4 is fixedly arranged below the screen 3, the lower end of the rotating shaft penetrates through the bearing seat 4, and 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, belt transmission mechanisms, and equivalent alternatives may be implemented using other power transmission means.

An inner sealing shell 5 is arranged outside the bearing seat 4, and the inner sealing shell 5 seals the bearing seat 4 and the lower end of the rotating shaft so as to prevent dust from entering the inside to cause equipment failure.

In fig. 1, the power device is arranged outside the crusher housing 6, the belt transmission mechanism penetrates through the inner sealing housing 5, and a sealing baffle is arranged on the periphery of the belt transmission mechanism between the crusher housing 6 and the inner sealing housing 5. In this embodiment, an opening through which the belt passes is provided in the inner seal housing 5, and then a ring of seal plates is provided at the edge of the opening, and the seal plates extend to the crusher housing 6.

The motor 7 may be used as the power device, but the present utility model is not limited thereto.

In order to dissipate heat of the bearing seat 4 and the rotating shaft, an air inlet pipe 8 can be connected to the lower part of the inner sealing shell 5, the upper part of the inner sealing shell 5 is connected with an air outlet pipe, and then air is supplied to the inner sealing shell through an air cooling system to dissipate heat.

And an ash bucket gate valve 9 can be arranged at the bottom of the ash bucket 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 relates to a crushing device specially designed for an ash conveying system, which is mainly used for an ash conveying system of a power plant, such as a dust remover blanking port, a desulfurizing device blanking port, an ash warehouse blanking port and the like. The technical points of design are as follows: 1) The edge surface of the three-blade diamond fly cutter forms an included angle of 45 degrees with the sieve plate, and the three-blade diamond fly cutter helps to convey materials while crushing. 2) The sieve plate holes are designed with apertures according to the material requirements, and the particle size of the material can be controlled. 3) The bearing seat is designed in the pipeline, is fully sealed, and is convenient to maintain and overhaul when the motor is arranged outside the pipeline. 4) The equipment is circular in appearance, the diameter of the inlet and outlet interfaces is the same as that of the pipeline, and the flow direction of the materials in the crusher is the same as that of the pipeline, so that the materials are crushed during conveying and flowing, the site installation is convenient, and the site defect is avoided. 5) The bearing pedestal is provided with a ventilation cooling device, so that the cooling of the bearing is ensured. The bearing pedestal is provided with an oil filler to ensure the lubrication of the bearing.

In this specification, each embodiment is described in a progressive manner, and each embodiment is mainly described by a difference from other embodiments, and identical and similar parts between the embodiments are mutually referred.

Reference throughout this specification to "one embodiment," "another embodiment," "an embodiment," etc., means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment described in general in the present application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment. Further, when a particular feature, structure, or characteristic is described in connection with any embodiment, it is intended that such feature, structure, or characteristic be implemented within the scope of the utility model.

Although the utility model has been described herein with reference to a number of illustrative embodiments thereof, it should be understood that numerous other modifications and embodiments can be devised by those skilled in the art that will fall within the scope and spirit of the principles of this disclosure. More specifically, various variations and modifications may be made to the component parts and/or arrangements of the subject combination arrangement within the scope of the disclosure and claims of this application. In addition to variations and modifications in the component parts and/or arrangements, other uses will be apparent to those skilled in the art.

Claims

1. An ash block crusher of an ash conveying system, which is characterized by comprising:

a desulfurizing tower ash bucket (1);

the screen (3) is positioned below the desulfurizing tower ash bucket (1) and is horizontally arranged;

the fly cutter mechanism (2) is arranged between the ash bucket (1) of the desulfurizing tower and the screen (3), the middle part of the fly cutter mechanism (2) is connected with the rotating shaft, the cutter blades of the fly cutter mechanism (2) are obliquely upwards arranged from the middle part to the periphery of the fly cutter mechanism (2), and the cutter edge surfaces of the cutter blades form an included angle of 44-46 degrees with the screen (3);

and the power device is connected with the rotating shaft of the fly cutter mechanism (2).

2. The ash block crusher of an ash conveying system according to claim 1, further comprising:

the bearing seat (4) is fixedly arranged below the screen (3), and the lower end of the rotating shaft penetrates through the bearing seat (4).

3. Ash block crusher of ash conveying system according to claim 2, characterized in that the bearing block (4) is a flanged double bearing block.

4. A dust cake crusher in a dust conveying system according to claim 2 or 3, further comprising:

and the inner sealing shell (5) is arranged outside the bearing seat (4) and seals the bearing seat (4) and one end of the rotating shaft.

5. The ash block crusher of ash conveying system according to claim 4, wherein one end of the rotating shaft is connected with the power device through a belt transmission mechanism.

6. The ash block crusher of an ash conveying system according to claim 5, characterized in that the power device is arranged outside the crusher housing (6), the belt transmission mechanism penetrates through the inner sealing housing (5), and a sealing baffle is arranged at the periphery of the belt transmission mechanism between the crusher housing (6) and the inner sealing housing (5).

7. The ash block crusher of an ash conveying system according to claim 6, characterized in that the power means is an electric motor (7).

8. The ash block crusher of the ash conveying system according to claim 6, characterized in that the lower part of the inner sealing shell (5) is connected with an air inlet pipe (8), and the upper part of the inner sealing shell (5) is connected with an air outlet pipe.

9. The ash block crusher of the ash conveying system according to claim 6, characterized in that an ash bucket gate valve (9) is arranged at the bottom of the ash bucket (1) of the desulfurizing tower.

10. The ash block crusher of an ash conveying system according to claim 6, characterized in that a discharge valve (10) is provided at the bottom of the crusher housing (6).