阅读说明：本技术 一种焦炉装煤车用防尘导套装置 (Dustproof guide sleeve device for coke oven coal charging car ) 是由 佟石 李谦 王亮 李忠伟 朱继承 陈俊廷 刘金港 冯苍龙 于 2020-04-29 设计创作，主要内容包括：本发明涉及焦炉装煤车除尘领域,尤其是一种焦炉装煤车用防尘导套装置,其特征在于,包括由上至下依次连接的上套、中套和下滑套,所述下滑套的外侧最少设有两根滑轨,下滑套外侧套设有防尘罩,所述防尘罩为顶部设有封板的圆筒形结构,所述防尘罩的顶部通过安装座与滑轨活动连接,防尘罩的筒体直径与焦炉受煤口最小直径的比为1.5~2:1,防尘罩的筒体高度为280~350mm。与现有技术相比,本发明所具有的有益效果是：1)结构设计合理,安装方便,可实现直接替换；2)不增加额外动力系统,防尘效果好,能耗低,故障率几乎为零。3)可单独与装煤车配合使用,也可与除尘系统组合使用,焦炉受煤口周围环境得到明显的改善。(The invention relates to the field of dust removal of coke oven coal charging cars, in particular to a dust-proof guide sleeve device for a coke oven coal charging car, which is characterized by comprising an upper sleeve, a middle sleeve and a lower sliding sleeve which are sequentially connected from top to bottom, wherein at least two sliding rails are arranged on the outer side of the lower sliding sleeve, a dust cover is sleeved on the outer side of the lower sliding sleeve, the dust cover is of a cylindrical structure with a sealing plate at the top, the top of the dust cover is movably connected with the sliding rails through a mounting seat, the ratio of the cylinder diameter of the dust cover to the minimum diameter of a coal receiving port of a coke oven is 1.5-2: 1, and the cylinder height of. Compared with the prior art, the invention has the beneficial effects that: 1) the structure is reasonable in design, convenient to install and capable of realizing direct replacement; 2) no additional power system is added, the dustproof effect is good, the energy consumption is low, and the failure rate is almost zero. 3) Can be used by being matched with a coal charging car independently, and can also be used by being combined with a dust removal system, and the environment around a coal receiving port of the coke oven is obviously improved.)

1. A dustproof guide sleeve device for a coke oven coal charging car, which comprises an upper sleeve, a middle sleeve and a lower sliding sleeve which are sequentially connected from top to bottom, the upper sleeve and the middle sleeve are connected through a flexible sealing strip, the middle sleeve and the lower sliding sleeve are movably connected, the lower sliding sleeve can correspondingly move relative to the middle sleeve to form two stations of a lifting position and a falling position, the top of the upper sleeve is connected with a coal charging car of the coke oven, the bottom of the lower sliding sleeve corresponds to a coal receiving port of the coke oven, two sides of the lower sliding sleeve are provided with connecting seats used for connecting operation arms of the coal charging car, it is characterized in that the outer side of the lower sliding sleeve is provided with at least two sliding rails, the outer side of the lower sliding sleeve is sleeved with a dust cover, the dust cover is of a cylindrical structure, the top of the dust cover is provided with a sealing plate, the top of the dust cover is movably connected with the sliding rail through a mounting seat, the ratio of the diameter of a cylinder of the dust cover to the minimum diameter of a coal receiving port of the coke oven is 1.5-2: 1, and the height of the cylinder of the dust cover is 280-350 mm.

2. The dust-proof guide sleeve device for the coke oven coal charging car as claimed in claim 1, wherein the number of the mounting seats is 3-6, and the mounting seats are uniformly arranged around the circumference of the lower sliding sleeve.

3. The dust-proof guide sleeve device for the coke oven coal charging car as claimed in claim 2, wherein the mounting seat comprises a first seat, a second seat, a distance limiting piece and a bolt, the distance limiting piece is arranged between the first seat and the second seat, the first seat and the second seat are connected through the bolt to form a circular ring, and a plurality of grooves matched with the slide rails are formed on the inner side of the circular ring.

4. The dust-proof guide sleeve device for the coke oven coal charging car as claimed in claim 1, wherein the cross section of at least one slide rail is any one of circular, rectangular, dovetail-shaped or trapezoidal.

5. The dust-proof guide sleeve device for the coke oven coal charging car as claimed in claim 1 or 4, wherein the effective length of the slide rail is 100-500 mm.

6. The dust-proof guide sleeve device for the coke oven coal charging car as claimed in claim 1, wherein the bottom of the dust-proof cover is flush or provided with a plurality of notches.

7. The dust-proof guide sleeve device for the coke oven coal charging car as claimed in claim 1, wherein the dust cover is connected with a flange interface, the flange interface is matched with the size of the dust removing equipment air inlet, when the lower sliding sleeve is in a falling position, and the bottom edge of the dust cover is flush with the coke oven coal receiving port flange, the flange interface is exactly matched with the position of the dust removing equipment air inlet.

8. The dust-proof guide sleeve device for the coke oven coal charging car as claimed in claim 1, wherein when the dust cover works, a negative pressure of 35-85 kPa is formed inside the dust cover.

9. The dust-proof guide sleeve device for the coke oven coal charging car as claimed in claim 1, wherein a carbon monoxide concentration monitoring device and/or an electric air mixing valve are/is arranged on the flange interface.

10. The dust-proof guide sleeve device for the coke oven coal charging car as claimed in claim 8, wherein the control relationship between carbon monoxide in the dust cover and the air mixing valve is as follows: when the concentration of the carbon monoxide exceeds a set value, the carbon monoxide concentration monitoring device sends an electrical signal to the control system, the control system sends an instruction to the air mixing valve actuating mechanism to be electrically operated, the air mixing valve is opened, air mixing is started, the concentration of the carbon monoxide is reduced, and the air mixing valve is closed after the time delay of 20-120 seconds.

Technical Field

The invention relates to the technical field of dust removal of coke oven coal charging cars, in particular to a dust-proof guide sleeve device for a coke oven coal charging car.

Background

Coke ovens in the metallurgical industry are furnaces that use bituminous coal to smelt coke by means of special equipment, also called coke ovens. The coal receiving port is a coal inlet of a special coal charging vehicle, coal is injected into the coke oven through a guide sleeve device (also called a coal receiving channel), peripheral smoke dust overflows due to instantaneous positive pressure of the coal in the coke oven, if the guide sleeve device and the oven door port are not well aligned, the smoke dust overflows more seriously, visual inspection smoke dust is very obvious, the post environment is very severe, and a new more environment-friendly coal receiving device is urgently needed to solve the problems of dust and smoke dust pollution in the coal receiving process.

The guide sleeve device of the coke oven coal charging car before modification comprises an upper sleeve (1), a middle sleeve (2) and a lower sliding sleeve (3), wherein the guide sleeve device is arranged below a coal hopper of the coal charging car and is butted with a coal receiving port of the coke oven, the lower sliding sleeve (3) is lifted up or put down by an operation connecting seat (4) of an operation arm of the coal charging car, and coal is charged into the coke oven, wherein the coal is to be charged in a state shown in a figure 1-1, and the coal is charged in a state shown in a figure 1-2.

The invention discloses a guide sleeve dust collecting device of a coke oven coal charging car, which is used for solving the problem that coal dust and smoke escape when a coke oven is charged with coal, wherein a coal charging guide sleeve is composed of a fixed guide sleeve and a movable guide sleeve which are connected in a sliding manner, a dust collecting cover is composed of a fixed dust collecting cover and a movable dust collecting cover which are connected in a sliding manner, and the movable dust collecting cover and the movable guide sleeve are fixedly connected and linked. The coal charging guide sleeve is a cylinder, the dust collection cover and the coal charging guide sleeve are connected into a whole, the working procedure is completed by a driving device together, and the structure is simple; the movable dust hood and the movable coal charging guide sleeve fall together during coal charging, so that the proper distance between the dust hood and the furnace top can be kept while the coal is prevented from overflowing, and the air speed and enough air are ensured to be mixed into the flue gas. The Chinese patent with the patent application number of 201720477677.3 discloses a smokeless coal charging car suitable for a top-loading coke oven, wherein a traveling device is arranged below a steel structure; the cover uncovering device is arranged on the left side of the guide sleeve device; the furnace base cleaning device is arranged on the right side of the guide sleeve device; the furnace cover cleaning device is arranged below the guide sleeve device; the center of a scraper group of the furnace cover cleaning device is coaxial with the coal charging hole; the weighing device is positioned below the support of the coal hopper, and the coal hopper and the weighing device are integrally arranged above the steel structure; the spiral feeder is positioned below the steel structure; the lower part of the grab bucket type flashboard is connected with the upper part of a fixed guide sleeve of the guide sleeve device through a flange; the ascending pipe cleaning device is fixed above the steel structure close to the ascending pipe side. Smoke dust overflow is controlled in all directions, and smokeless coal charging is realized; effectively improves the environmental protection performance and the technical level of the coal charging car.

The dust pollution of the top-mounted coke oven with coal is always an urgent practical problem to be solved, and many attempts are made in the aspects of guide sleeve devices and coal charging cars, but no solution with simpler structure and stable and reliable effect exists at present.

Disclosure of Invention

The invention aims to provide a dustproof guide sleeve device for a coke oven coal charging car, which overcomes the defects of the prior art, optimizes the structure of the guide sleeve device, and forms a movable air bin between the guide sleeve device and a coal receiving port of a coke oven.

In order to achieve the purpose, the invention adopts the technical scheme that:

a dustproof guide sleeve device for a coke oven coal charging car, which comprises an upper sleeve, a middle sleeve and a lower sliding sleeve which are sequentially connected from top to bottom, the upper sleeve and the middle sleeve are connected through a flexible sealing strip, the middle sleeve and the lower sliding sleeve are movably connected, the lower sliding sleeve can correspondingly move relative to the middle sleeve to form two stations of a lifting position and a falling position, the top of the upper sleeve is connected with a coal charging car of the coke oven, the bottom of the lower sliding sleeve corresponds to a coal receiving port of the coke oven, two sides of the lower sliding sleeve are provided with connecting seats used for connecting operation arms of the coal charging car, it is characterized in that the outer side of the lower sliding sleeve is provided with at least two sliding rails, the outer side of the lower sliding sleeve is sleeved with a dust cover, the dust cover is of a cylindrical structure, the top of the dust cover is provided with a sealing plate, the top of the dust cover is movably connected with the sliding rail through a mounting seat, the ratio of the diameter of a cylinder of the dust cover to the minimum diameter of a coal receiving port of the coke oven is 1.5-2: 1, and the height of the cylinder of the dust cover is 280-350 mm.

The number of the mounting seats is 3-6, and the mounting seats are uniformly arranged around the circumference of the lower sliding sleeve.

The mounting seat comprises a first seat, a second seat, a distance limiting piece and a bolt, the distance limiting piece is arranged between the first seat and the second seat, the first seat and the second seat are connected through the bolt to form a circular ring, and a plurality of grooves matched with the sliding rails are formed in the inner side of the circular ring.

The cross section of at least one slide rail is any one of circular, rectangular, dovetail or trapezoid.

The effective length of slide rail is 100~500 mm.

The bottom of the dust cover is parallel and level or provided with a plurality of gaps.

The dust cover is connected with a flange interface, the flange interface is matched with the size of an induced draft port of the dust removal equipment, the lower sliding sleeve is located at a falling position, and when the bottom edge of the dust cover is flush with a coal receiving port flange of the coke oven, the flange interface is just matched with the induced draft port of the dust removal equipment.

When the dust cover works, negative pressure of 35-85 kPa is formed inside the dust cover.

And a carbon monoxide concentration monitoring device and/or an electric air mixing valve are/is arranged on the flange interface.

The control relation between the carbon monoxide in the dust cover and the air mixing valve is as follows: when the concentration of the carbon monoxide exceeds a set value, the carbon monoxide concentration monitoring device sends an electrical signal to the control system, the control system sends an instruction to the air mixing valve actuating mechanism to be electrically operated, the air mixing valve is opened, air mixing is started, the concentration of the carbon monoxide is reduced, and the air mixing valve is closed after the time delay of 20-120 seconds.

Compared with the prior art, the invention has the beneficial effects that:

1) the structure design is reasonable, the installation is convenient, the coke oven coal receiving port guide sleeve device can keep the corresponding relation with the original connecting mechanism, and the direct replacement is realized;

2) the dust-proof device has the advantages of no additional power system, good dust-proof effect, low energy consumption and almost zero failure rate, and is widely welcomed by field operators of users.

3) The dust-proof cover can be used independently in cooperation with a coal charging car or in combination with a dust-proof system, dust in the dust-proof cover is sucked away by the dust-proof system, and the environment around a coal receiving port of the coke oven is obviously improved.

4) Under the condition of permission of peripheral space of the equipment, the size of the dust cover is maximized so as to improve the volume space and buffer the impact airflow generated by the instantaneous positive pressure of the coal;

5) in order to ensure the production safety, the concentration of carbon monoxide in the dust cover and the opening of the air mixing valve need to be controlled in an interlocking manner, so that dust explosion is avoided.

Drawings

FIG. 1-1 is a prior art state of the art coal to be subjected;

FIGS. 1-2 illustrate the state of the art for receiving coal;

FIG. 2-1 is a schematic structural diagram of a state of coal to be subjected in an embodiment of the present invention;

FIG. 2-2 is a schematic structural diagram of a coal-receiving state in an embodiment of the present invention;

FIG. 3 is a schematic view of a mounting base according to an embodiment of the present invention;

FIG. 4 is a schematic diagram illustrating a position alignment state between a flange interface and an air inlet of a dust removing device according to an embodiment of the present invention.

In the figure: 1-upper sleeve, 2-middle sleeve, 3-lower sliding sleeve, 4-connecting seat, 5-flexible sealing belt, 6-coke oven coal receiving port, 7-sliding rail, 8-mounting seat, 801-seat I, 802-seat II, 803-distance limiting sheet, 804-bolt, 805-groove, 9-dust cover, 10-flange interface and 11-dust removing equipment air inducing port.

Detailed Description

The following further describes the embodiments of the present invention with reference to the drawings.

Referring to fig. 2-1 and 2-2, an embodiment of a dustproof guide sleeve device for a coke oven coal charging car according to the present invention is schematically shown in a structural view, and comprises an upper sleeve 1, a middle sleeve 2 and a lower sliding sleeve 3 which are sequentially connected from top to bottom, wherein the upper sleeve 1 and the middle sleeve 2 are connected through a flexible sealing tape 5 to ensure a sealing effect and a relative movement between the upper sleeve 1 and the middle sleeve 2, the middle sleeve 2 and the lower sliding sleeve 3 are movably connected, the lower sliding sleeve 3 can correspondingly move relative to the middle sleeve 2 to form two stations, namely a lifting position (a state of receiving coal) and a falling position (a state of receiving coal), the top of the upper sleeve 1 is connected with a coke oven coal charging car (not shown), the bottom of the lower sliding sleeve corresponds to a coal receiving port 6 of a coke oven, two sides of the lower sliding sleeve 3 are provided with connecting seats 4 for connecting operation arms of the coal charging car, the outer side of the lower sliding sleeve 3 is provided with at least two sliding rails 7, the, the top of the dust cover is movably connected with the sliding rail 7 through the mounting seat 8, the ratio of the diameter of the cylinder of the dust cover 9 to the minimum diameter of the coal receiving port 6 of the coke oven is 1.5-2: 1, and the height of the cylinder of the dust cover 9 is 280-350 mm.

See fig. 3, the quantity of mount pad 8 is 3~6, evenly arranges around 3 circumferences of lower sliding sleeve. The mounting seat 8 comprises a first seat 801, a second seat 802, a distance limiting sheet 803 and a bolt 804, the distance limiting sheet 803 is arranged between the first seat 801 and the second seat 802, the first seat and the second seat are connected through the bolt 804 to form a circular ring, and a plurality of grooves 805 matched with the sliding rails are formed in the inner side of the circular ring. In the embodiment, the cross section of the slide rail 7 is rectangular, or may be any one of circular, dovetail-shaped or trapezoidal, and the function of lifting the guide rail of the dust cover can be realized. The effective length H of the slide rail 7 is 100-500 mm.

The bottom of the dust cover 9 is flush, and if the dust cover is tightly attached to the ground plane of the furnace top, a plurality of openings can be formed in the bottom edge of the dust cover in order to ensure the stability of negative pressure in the dust cover.

Referring to fig. 4, a flange interface 10 is connected to one side of the dust cover 9, the flange interface is matched with the size of the dust removing device air induction port 11, and when the lower sliding sleeve 3 is in a falling position and the bottom edge of the dust cover 9 is flush with the coal receiving port flange of the coke oven, the flange interface 10 is exactly matched with the position of the dust removing device air induction port 11. When the dust cover works, negative pressure of 35-85 kPa is formed inside the dust cover.

In order to ensure the production safety, a carbon monoxide concentration monitoring device 12 and an electric air mixing valve 13 can be arranged on the flange interface 10, and the control method of the carbon monoxide and air mixing valve in the dust cover comprises the following steps: when the carbon monoxide concentration exceeds the preset value by 10%, the carbon monoxide concentration monitoring device sends an electric signal to the control system, the control system sends an instruction to the air mixing valve actuating mechanism to be powered on, the air mixing valve is opened, air mixing is started, the carbon monoxide concentration is reduced, and the air mixing valve is closed after the time delay is 20-120 seconds (the time can be determined according to the actual situation on site).

The working principle of the invention is as follows: the lower sliding sleeve is provided with a dust cover which can move up and down together with the lower sliding sleeve, the diameter of the dust cover is larger than that of a coal receiving port of the coke oven, the volume of the dust cover can greatly buffer impact airflow generated by positive pressure at the moment of coal unloading, and meanwhile, smoke dust is sucked away by a dust removal device air induction port through a flange interface, so that the environment around the coal receiving port of the coke oven is obviously improved. It is worth explaining that the effective length of the slide rail can ensure that the lower end of the lower sliding sleeve just falls on the ground plane of the furnace top after the dust cover and a coal receiving port of the coke oven form a sufficient sealing cover distance, so that the sealing effect is further enhanced.

Because the mixed concentration of carbon monoxide and air is 12.5% -74% of an explosion interval, and the explosion intensity is increased along with the increase of the concentration, the scheme of the invention adopts a carbon monoxide concentration monitoring device to monitor the change of the carbon monoxide concentration at the dust collection cover opening of the dust collector and provide telecommunication for a control system, a safety value of 10% is set firstly when the dust collector is used, and an air mixing valve is opened when the safety value is exceeded, so that the carbon monoxide concentration is diluted to be below the safety value.

The foregoing is directed to preferred embodiments of the present invention, other and further embodiments of the invention may be devised without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow. However, any simple modification, equivalent change and modification of the above embodiments according to the technical essence of the present invention are within the protection scope of the technical solution of the present invention.