阅读说明：本技术 外置式气化炉的煤料炉灰装卸阀 (Coal ash loading and unloading valve of external gasification furnace ) 是由 张维田 孙健 于 2020-04-10 设计创作，主要内容包括：本发明涉及一种外置式气化炉的煤料炉灰装卸阀,有一个阀体,所述阀体中部设置炉料通道,该炉料通道两端对称设置有炉料进口和炉料出口,所述阀体上部装有阀盖,该阀盖顶部装有护罩；所述阀体内安装有阀座,该阀座内安装阀板；所述阀板上部设有过料孔,其下部设置密封板,其顶端与一个阀杆连接,该阀杆延伸穿过所述阀盖、所述护罩与传动装置连接；所述的阀板与所述阀座之间设置密封装置；所述阀盖内设置阀板密封箱,该阀板密封箱安装在所述阀体上,该阀板密封箱内设有自补偿内衬机构。本发明的煤料炉灰装卸阀具有较高的密封效果,检修人员能在线拆卸阀盖,实现阀板、阀板密封箱的在线更换,使得检修维护十分方便。(The invention relates to a coal material furnace ash loading and unloading valve of an external gasification furnace, which comprises a valve body, wherein a furnace charge channel is arranged in the middle of the valve body, a furnace charge inlet and a furnace charge outlet are symmetrically arranged at two ends of the furnace charge channel, a valve cover is arranged at the upper part of the valve body, and a shield is arranged at the top of the valve cover; a valve seat is arranged in the valve body, and a valve plate is arranged in the valve seat; the upper part of the valve plate is provided with a material passing hole, the lower part of the valve plate is provided with a sealing plate, the top end of the valve plate is connected with a valve rod, and the valve rod extends through the valve cover and the shield to be connected with a transmission device; a sealing device is arranged between the valve plate and the valve seat; a valve plate seal box is arranged in the valve cover and is installed on the valve body, and a self-compensation lining mechanism is arranged in the valve plate seal box. The coal material furnace ash loading and unloading valve has a high sealing effect, and a maintainer can detach the valve cover on line, so that the valve plate and the valve plate sealing box are replaced on line, and the maintenance is very convenient.)

1. The utility model provides a coal charge ashes loading and unloading valve of external gasifier, has a valve body (1), its characterized in that: a furnace charge channel is arranged in the middle of the valve body, a furnace charge inlet (2) and a furnace charge outlet (3) are symmetrically arranged at two ends of the furnace charge channel, a valve cover (4) is arranged at the upper part of the valve body, and a shield (5) is arranged at the top of the valve cover; a valve seat (9) is arranged in the valve body, and a valve plate (10) is arranged in the valve seat; the upper part of the valve plate is provided with a material passing hole (101), the lower part of the valve plate is provided with a sealing plate (102), the top end of the valve plate is connected with a valve rod (7) which extends through the valve cover and the shield is connected with a transmission device (6); a sealing device (8) is arranged between the valve plate and the valve seat; a valve plate seal box (11) is arranged in the valve cover and is installed on the valve body, and a self-compensation lining mechanism (12) is arranged in the valve plate seal box.

2. A coal ash handling valve as set forth in claim 1, characterized in that: the valve plate protection box is arranged at the lower part of the valve body, and the valve plate auxiliary supporting mechanism is arranged at the bottom of the valve plate protection box.

3. The coal ash handling valve of claim 2, wherein: the self-compensation lining mechanism comprises a lining plate, a compression spring and adjusting screws, wherein the lining plate is installed on the inner wall of the valve plate seal box, a plurality of adjusting holes are formed in the wall plate of the valve plate seal box, and the compression spring and the adjusting screws are installed in the adjusting holes.

4. A coal ash handling valve as set forth in claim 3, characterized in that: the bottom end of the lining plate is provided with an acute angle.

Technical Field

The invention relates to the technical field of coal gasification furnaces, in particular to a coal ash loading and unloading valve of an external gasification furnace.

Background

At present, the environment-friendly pressurized entrained-flow gasification technology is generally applied in China. The cooling water jacket type gasification furnaces account for a considerable portion of them. Chinese patent 201810091997.4 discloses a central oxygen supply water-cooled wall type fixed bed gasification furnace, which comprises: the device comprises a water-cooled wall shell, a gas-liquid separator, a grate system, a coal lock, an ash lock and a grading oxygen supply device. The top and the bottom of the water-cooled wall shell are respectively provided with an upper port and a lower port; the gas-liquid separator is communicated with the water-cooled wall shell through a pipeline; the grate system comprises a grate and a transmission device; the coal lock is arranged at the upper port of the water-cooled wall shell; the ash lock is arranged at the lower port of the water-cooled wall shell; the grading oxygen supply device comprises a gasification agent pipeline and a central oxygen delivery pipe. The coal lock in the patent is arranged at the upper port of the water wall shell; the ash lock is installed in the lower port of water-cooled wall shell, and coal lock and ash lock installation and maintenance are more difficult, open and close the operation comparatively loaded down with trivial details to sealing performance is not good, reveals easily. When the coal lock and the ash lock are overhauled each time, overhaul personnel are required to enter the closed material tank, and the overhaul work has great potential safety hazard because the inside of the material tank is at high temperature and is full of coal gas in the working state. Therefore, it is necessary to provide an external coal ash loading and unloading valve for the gasification furnace.

Disclosure of Invention

The invention aims to provide a coal ash loading and unloading valve of an external gasification furnace, which comprises a valve body, wherein a furnace charge channel is arranged in the middle of the valve body, a furnace charge inlet and a furnace charge outlet are symmetrically arranged at two ends of the furnace charge channel, a valve cover is arranged at the upper part of the valve body, and a shield is arranged at the top of the valve cover; a valve seat is arranged in the valve body, and a valve plate is arranged in the valve seat; the upper part of the valve plate is provided with a material passing hole, the lower part of the valve plate is provided with a sealing plate, and the top end of the valve plate is connected with a valve rod. The valve plate and the sealing device can be replaced on line only by disassembling the valve cover, and the maintenance is convenient. The self-compensating lining mechanism has excellent sealing effect.

The purpose of the invention is realized by the following technical scheme: a coal material furnace ash loading and unloading valve of an external gasification furnace is provided with a valve body, wherein a furnace charge channel is arranged in the middle of the valve body, a furnace charge inlet and a furnace charge outlet are symmetrically arranged at two ends of the furnace charge channel, a valve cover is arranged at the upper part of the valve body, and a shield is arranged at the top of the valve cover; a valve seat is arranged in the valve body, and a valve plate is arranged in the valve seat; the upper part of the valve plate is provided with a material passing hole, the lower part of the valve plate is provided with a sealing plate, the top end of the valve plate is connected with a valve rod, and the valve rod extends through the valve cover and the shield to be connected with a transmission device; a sealing device is arranged between the valve plate and the valve seat; a valve plate seal box is arranged in the valve cover and is installed on the valve body, and a self-compensation lining mechanism is arranged in the valve plate seal box.

In order to improve the stability of the valve plate, the lower part of the valve body is provided with a valve plate protection box, and the bottom of the valve plate protection box is provided with a valve plate auxiliary supporting mechanism.

In order to improve the sealing performance of the valve plate, the self-compensation lining mechanism comprises a lining plate, a compression spring and an adjusting screw, the lining plate is installed on the inner wall of the valve plate seal box, a plurality of adjusting holes are formed in the wall plate of the valve plate seal box, and the compression spring and the adjusting screw are installed in the adjusting holes.

In order to improve the self-cleaning performance of the valve plate, the bottom end of the inner lining plate is provided with an acute angle.

Compared with the prior art, the invention has the following advantages:

1. because the valve plate sealing box is externally arranged, a maintainer can disassemble the valve cover on line, and the valve plate sealing box are replaced on line, so that the maintenance is very convenient.

2. The sealing device is arranged between the valve plate and the valve seat, so that the sealing effect of the loading and unloading valve is greatly improved.

3. The self-compensating lining mechanism is arranged in the valve plate sealing box, so that the sealing effect of the valve plate sealing box can be kept unchanged in the long-term operation process.

4. The valve plate is coated with the nickel-based alloy and the tungsten carbide protective layer, so that the wear resistance of the valve plate is realized.

5. The bottom end of the lining plate is provided with an acute angle, so that the surface of the valve plate can be randomly cleaned, and the sealing effect of the loading and unloading valve is improved.

Drawings

The invention is further explained with reference to the drawings and the embodiments.

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the outline structure of the present invention;

FIG. 3 is a schematic view of the valve plate structure of the present invention;

fig. 4 is a schematic structural view of the valve plate seal box in the invention.

Detailed Description